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Change Log

In the following, change log entries for the managed software packages are shown

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Category Date Version Log
cego 11.07.2024 2.49.6 Version released
cego 11.07.2024 2.49.6 Version released
cego 11.07.2024 2.49.6 Indent format improvements made for select, insert and update queries. This is relevant for formatted sql code in stored procedures.
cego 02.07.2024 2.49.5 Version released
cego 02.07.2024 2.49.5 Since synchronization of tableset admin operations still not has been covered, this was added with this patch. In CegoBufferPool, new methods are provided for tableset oriented locking ( lockPool and unlockPool ) These methods are used by CegoAdminThread to synchronize concurrent tableset admin operations ( like stop tableset, drop tableset, export tableset, e.g. )
cegopython 29.06.2024 1.0.1 Version released
cegopython 29.06.2024 1.0.1 Changed in curser.py from collections to collections.abc since collections.Sequence seems to be no more supported.
cego 29.06.2024 2.49.4 Version released
cego 29.06.2024 2.49.4 More stabilization added to c wrapper library. Rellocation of cpluscheck and c wrapper check to root directory. CegoCPlusCheck and cgwtest are now build during make all
cegopython 28.06.2024 1.0.0 Version released
cego 27.06.2024 2.49.3 Version released
cego 26.06.2024 2.49.3 Added fix in CegoFieldValue for construction of double values ( added missing normFloatValue method call )
cegopython 20.06.2024 1.0.0 Initial implementation started. The cego python driver requires at least cego version 2.49.3, since this version contains several enhancements for the C wrapper API
cego 20.06.2024 2.49.3 Added several patches and extendsion for C wrapper API
cego 13.06.2024 2.49.2 Version released
cego 13.06.2024 2.49.2 Added patches in CegoQueryCache to improve locking. For the addEntry method, the complete locking logic was redesigned to avoid deadlocks
cego 04.06.2024 2.49.1 Version released
cego 04.06.2024 2.49.1 Added missing thread lock information for admin thread list and thread stat command ( query + table locks, logmanager locks )
cego 03.06.2024 2.49.1 Added patch for CegoQueryCache to make cacheLock dedicated for each tableset.
lfcxml 02.06.2024 1.3.7 Version released
lfcxml 02.06.2024 1.3.7 Patch added in XMLSuite.cc to treat CDATA lookahead correctly. Trailing square brackets ( ] ) at the end of cdata might cause parsing problems
cegojdbc 15.05.2024 1.11.0 Version released
cegobridge 15.05.2024 1.7.0 Version released
cego 15.05.2024 2.49.0 Version released
cego 08.05.2024 2.49.0 Consolidation done for data types decimal and fixed. This version just supports decimal datatype which originally was fixed datatype. The original decimal datatype seemed to be useless.
This patch has impact for several other packages but also import / export procedure.
To migrate to version 2.49, you have to xml export data and make a renaming of the datatype strings "fixed" and "FIXED" to "decimal" and "DECIMAL"
cego 19.04.2024 2.48.49 In CegoCaseCond, added getPlanList method to retrieve execution plan for nested selects. The planlist then is catched in CegoFactor::getPlanList
cego 01.04.2024 2.48.48 Version released
cego 30.03.2024 2.48.48 Fix in CegoAdmScreen::TableSet::TableSet constructor, SysUsage field added to indicate correct usage for system, temp and app files
cego 29.03.2024 2.48.47 Version released
cego 29.03.2024 2.48.47 Sample code for transaction effect : ---
drop if exists table t1;
create table t1 (a  int, b string(10));

start transaction;
insert into t1 values ( 1, 'XXX'); 
insert into t1 values ( 1, 'XXX'); 
insert into t1 values ( 1, 'XXX'); 
-- here a double delete may occur
delete from t1;
insert into t1 values ( 1, 'XXX'); 
select * from t1;
cego 29.03.2024 2.48.47 Patch added for transaction handling in CegoTransactionManager::doCommit and CegoTableManager::deleteDataTableEntry. Just for tuple state COMMITTED, a rollback entry must be created, otherwise double tuple delete may occur. For tuple state INSERTED, tuple state is just set to OBSOLETE, for tuple state OBSOLETE and DELETED, nothing has to be done. In CegoTableManager::doCommit, tuple state just has to be set to COMMITTED in case of INSERTED tuples
cego 26.03.2024 2.48.46 Version released
cego 26.03.2024 2.48.46 Elimination of a cout in CegoQueryCache::QueryCacheEntry::cleanCache
cegojdbc 17.03.2024 1.10.6 Version released
cegojdbc 17.03.2024 1.10.6 Elimination of several warnings in code caused by legacy constructs
cego 17.03.2024 2.48.45 Version released
cego 17.03.2024 2.48.45 Added patches for return on update handling to treat value handling in return list. The order in the return list must be stricter, otherwise field evaluation via FLA caching in CegoFactor fails.
Furthermore, returnList has been localized ( new method CegoQueryHelper::localizeFL ) to ensure correct values after update cursor ist closed.
cego 15.03.2024 2.48.44 Version released
cego 15.03.2024 2.48.44 Patch added in CegoXPorter to improve exception handling for invalid export file names
cego 06.03.2024 2.48.43 Version released
cego 06.03.2024 2.48.43 Added patch in CegoSelect::evalSchema to treat null values for union all, added patch in CegoFunction::clone to treat counterId value
cegojdbc 28.02.2024 1.10.5 Version released
cegojdbc 28.02.2024 1.10.5 Added patch for CegoStatement.executeQuery, result set handling was not done correctly, if result sets are retrieve via getResultSet statement method
cego 13.02.2024 2.48.42 Version released
cego 13.02.2024 2.48.42 In CegoDistCursor::nextTuple, added query aborted check. This is needed to abort long running inner and outer join selects
cego 10.02.2024 2.48.41 Version released
cego 10.02.2024 2.48.41 Patch added in CegoProcedure::cleanup to set pMasterBlock to zero. In some cases, the setup master block lead to usage leaks for user function calls. See check110.sql as a sample to cause this problem.
cego 03.02.2024 2.48.40 Version released
cego 03.02.2024 2.48.40 Small patch on CegoDistManager::startTableSet, improvement for exception message added
cego 27.01.2024 2.48.39 Version released
cego 27.01.2024 2.48.39 Patch added in CegoAdminThread::srvParameterInfo to list current QUEUEDELAY value and configured scandal formats ( SCANDATETIMEFORMAT )
cego 08.01.2024 2.48.38 Version released
cego 08.01.2024 2.48.38 Patch added in CegoQueryHelper::evalBetween The comparison ( f2 <= f1 && f1 <= f3 ) has changed to ( f1 >= f2 && f1 <= f3 ) This forces a type cast to f1 datatype in case mismatched datatypes. This might be useful for queries like select a from v1 where a between '30.11.2023' and '31.12.2023'; where a cast should be done to date time value ( instead of string )
cego 19.12.2023 2.48.37 Version released
cego 19.12.2023 2.48.37 Patch added in CegoQueryHelper::encodeFL and CegoQueryHelper::decodeFL. Die dim field value was still not treated. This might lead to wrong fixed values for update operations during crash recovery operation
cegobridge 13.12.2023 1.6.5 Version released
cegobridge 13.12.2023 1.6.5 Fix for renamed scandate function added
cego 13.12.2023 2.48.36 Version released
cego 13.12.2023 2.48.36 Fix in CegoXPorter for view import. For view creation, field entries in schema must be setup with a unique id ( analog to view creation via sql command )
cego 08.12.2023 2.48.35 Version released
cegojdbc 08.12.2023 1.10.4 Version released
cegojdbc 08.12.2023 1.10.4 Adaptions made for cego-2.48.35
cego 08.12.2023 2.48.35 Renaming date function dateformat to scandate since this is rather a scanning function. Please note, that cegojdbc uses this function in CegoPreparedStatement class. The renaming is adapted in ceegojdbc-1.10.4
cego 16.11.2023 2.48.34 Version released ( Please note : View reload required ! )
cego 16.11.2023 2.48.34 In CegoDistCursor::getTuple, the tuple retrievel has been changed for view objects. Instead of overwriting the given pFLA, tuple are first retrieved in an empty fvl. Then just the required attribute values in the pFLA are updated. This should result in a better performance but also in a consistent fla structure for FLA caching ( in CegoFactor, _flaCached variable must not be reset if FLA has been setup ) This patch required reload of all view objects ( since attr for view schema must be unique, see evalSchema patch before ) and is still under observation.
cego 16.11.2023 2.48.33 Version released
cego 16.11.2023 2.48.33 Add patch in CegoFactor::setFieldListArray, _flaCached again is set to false since the field list in the the array may change ( e.g. for outer join queries used in views )
cego 14.11.2023 2.48.32 Version released
cego 14.11.2023 2.48.32 Patch added to support nested case conditions like
case when t2.a = 1 
   case when  t2.b = t1.b
end as status
For this, in CegoAction, pCaseCond handle has been stacked
cego 13.11.2023 2.48.31 Version released
cego 13.11.2023 2.48.31 Added patch in CegoSelect::evalSchema. At the end of the method, schema ids are calculated to provide unique attribute ids for views
lfcbase 12.11.2023 1.18.6 Version released
lfcbase 12.11.2023 1.18.6 Patch added in Sleeper class to support larger values for milliSleep and microSleep. For this, also input parameter type has changed from int to unsigned long
cego 31.10.2023 2.48.30 Version released
cego 31.10.2023 2.48.30 Patch added for CegoCaseCond::evalField to eval appropriate datatype. If the case condition contains null type this was not done correctly
cego 08.08.2023 2.48.29 Version released
cego 08.08.2023 2.48.29 Fix added in CegoAggregation::decode, c flag was not decoded correctly ( wrong order in memcpy function )
cegodbd 30.07.2023 1.5.3 Version released
cegodbd 30.07.2023 1.5.3 Small patch in dbdimp.h ( elimination register variable ) to compile with FreeBSD 14
cego 29.07.2023 2.48.28 Version released
cego 29.07.2023 2.48.28 Fix added in CegoProcQueryStmt::execute, after execution of the query, the cleanUp method must be called to avoid leaks regarding stored proc object use ( this corresponds to the new optimized stored proc handling )
cego 27.06.2023 2.48.27 Version released
cego 27.06.2023 2.48.27 In CegoFunction constructors, added _pProc = 0 initialization for decoding and fromElement constructors. This avoid a set fault, in case of database recovery, when a predicate expression with user function is dedoded from log file
cego 14.06.2023 2.48.26 Version released
cego 14.06.2023 2.48.26 Patch addd for tableset stop procedure. With the new optimized stored procedure handling ( CegoFunction module ), the object cleanup must be done BEFORE the tableset is finally stopped. Otherwise an uncaught exception occurs ( tableset not online ) which results in database crash after tableset shutdown. Several modules have been modified for this
cego 12.05.2023 2.48.25 Version released
cego 12.05.2023 2.48.25 Patch added in CegoFunction to avoid useObject leaks
cego 11.05.2023 2.48.24 Version released
cego 11.05.2023 2.48.24 Performance improvement added for stored procedures. In CegoFunction, the procedure handle now is stored after first stored procedure call ( instead of freeing the handle and request it again with the next call ) So for subsequent function calls, the handle is already available, which improves stored procedure execution time significantly.
As a consequene, code has been added for cleanUp the handle at the end of the query ( object is also in use during the whole query with CegoDatabaseManager::useObject and must be unused by cleanup )
cego 28.04.2023 2.48.23 Version released
cego 28.04.2023 2.48.23 Patch added in CegoTableManager::updateTuple, reactivated evalExtTableReferences method call, since this is needed for update with nested selects, where external attributes are referenced in combination with enabled query cache ( e.g. update t1 set a = ( select a from t2 where t1.b = t2.b ) )
cegojdbc 13.04.2023 1.10.3 Version released
cegojdbc 13.04.2023 1.10.3 Patches in CegoPreparedStatement to replace date function with dateformat function
cego 05.04.2023 2.48.22 Version released
lfcbase 05.04.2023 1.18.5 Version released
cego 05.04.2023 2.48.22 Changes in CegoAdmScreen::DBThread panel to show long queries with new Screen2::Message panel
lfcbase 05.04.2023 1.18.5 Improvements for Screen2:Message panel
lfcbase 30.03.2023 1.18.4 Version released
lfcbase 29.03.2023 1.18.4 Added scrollable feature to Screen2::Message, so longer messages can be handeled now be the panel
cego 21.03.2023 2.48.21 Version released
cego 21.03.2023 2.48.21 Fix added for CegoAdmScreen in tableset parameter panel. Initfile was not setup correctly ( null value indicated, should be empty string )
cego 15.03.2023 2.48.20 Version released
cego 15.03.2023 2.48.20 Added default append mode setting for tableset.
WIth cgadm the appendmode can be setup ( e.g. enable appendmode for TS1 )
It may be useful to have enabled appendmode at default for insert intensive tableset configurations
lfcxml 09.03.2023 1.3.6 Version released
lfcxml 09.03.2023 1.3.6 Since there occur some build problems on FreeBSD, a rebuild of configure and Makefile.am with ( a newer version of ) autoreconf on Ubuntu Linux system was done
cego 06.03.2023 2.48.19 Version released
lfcbase 06.03.2023 1.18.3 Version released
cego 06.03.2023 2.48.19 Added parameter menu item to CegoAdmScreen tableset action menu to customize tableset sortareasize, autocorrect, checkpoint interval and init file
cego 05.03.2023 2.48.19 Added Edit menu to CegoAdmScreen to modify tableset entries in status DEFINED
lfcbase 04.03.2023 1.18.3 Code cleanup, made Screen2:Panel:~Panel virtual to avoid compiler warnings
cego 04.03.2023 2.48.19 Code cleanup, elimination of same warnings regarding unreachable case statements ( no issues, just to satisfy compiler )
cego 03.03.2023 2.48.18 Version released
cego 03.03.2023 2.48.18 Some adaptions for extended Screen2 interface with refresh customizing.
lfcbase 03.03.2023 1.18.2 Version released
lfcbase 03.03.2023 1.18.2 Opimization in Screen2 to customize screen refreshes ( introduced virtual method Panel::doRefresh )
cego 03.03.2023 2.48.17 Version released
cego 03.03.2023 2.48.17 Fixes added for CegoAdmScreen, to avoid too many admin requests, backup panel and data file panel are just refreshed initially and after add objects.
Fix added in CegoObjectManager::alterObject, the getNewFilePage has been changed to type CegoObject::SYSTEM. Otherwise, a page from a tuple datafile is allocated, which results in strange effects
lfcbase 27.02.2023 1.18.1 Version released
lfcbase 27.02.2023 1.18.1 Patches added for clean MinGW compile. It seems, the MinGW people took some changes in the system libraries API ( e.g. mkdir, sigaction and ioctl ) No effect for Unix compiles
cego 15.02.2023 2.48.16 Version released
cego 15.02.2023 2.48.16 Fix added for CegoAdmScreen, the data file root path still was not added to new datafiles in the tableset add datafile mask
cegobridge 26.01.2023 1.6.4 Version released
cego 26.01.2023 2.48.15 Version released
cegobridge 26.01.2023 1.6.4 Fixes for new dateformat function ( cego-2.48.13 and up ) and more sophisticated database procedure use ( select in procedure )
cego 26.01.2023 2.48.15 Fixes added in CegoAction and CegoSelect to treat cego parser with tablemanager pointer = 0. This is needed for cegobridge to parse procedures and generated other db specific code
cego 24.01.2023 2.48.14 Version released
cego 23.01.2023 2.48.14 Fix added in CegoObjectManager::alterObject, after freeing old page entry, page should be unfixed with marked as dirty. In the main loop, unfix has been changed to dirty = false
cego 22.01.2023 2.48.13 Version released
cego 18.01.2023 2.48.12 Version released
cego 18.01.2023 2.48.12 Added function dateformat which can be feeded with two expressions to return a datetime value from a given format and value string ( analog to date(x,y) which expects constant input values )
cego 17.01.2023 2.48.12 Added more date functions to the datefunc package. Now there are the following date functions available

int second(datetime d)
int minute(datetime d)
int hour(datetime d)
int day(datetime d)
int month(datetime d)
int year(datetime d)
datetime plusHour(datetime d, int hr)
datetime plusDay(datetime d, int dy)
datetime plusMonth(datetime d, int mt)
datetime plusYear(datetime d, int yr)
datetime minusHour(datetime d, int hr)
datetime minusDay(datetime d, int dy)
datetime minusMonth(datetime d, int mt)
datetime minusYear(datetime d, int yr)
cego 17.01.2023 2.48.12 In CegoMain, added DEFAULTDATETIMEFORMAT1 to dateFormat list to also parse this format for native cast from string to datetime
cego 05.01.2023 2.48.11 Version released
cego 05.01.2023 2.48.11 Added Query Cache menu to CegoAdmScreen to manage query cache parameters
cegobridge 03.01.2023 1.6.3 Version released
cegobridge 03.01.2023 1.6.3 Fixes added
cego 03.01.2023 2.48.10 Added lfcbase Screen2 support to CegoAdmScreen
lfcbase 03.01.2023 1.18.0 Uplift to Version 1.18.0 with released Screen2 interface
lfcbase 26.12.2022 1.17.5 Added Screen2 class, which is next generation implementation of Screen in a more object oriented manner. See Screen2Test.cc in the basecheck directory how to use Screen2
cego 21.12.2022 2.48.9 Version released
cego 21.12.2022 2.48.9 Fixes added for alias object usage ( e.g. in combination with views )
cego 20.12.2022 2.48.9 Added defTabSetId parameter to several toChain methods to write views, procedures and triggers without explizit tableset references. This migtht be useful, if a tableset dump just references objects for a single tableset and it should be loaded to a tableset with a different name. ( e.g. select a from t1@TS1 is written as select a from t1, if active tableset is TS1 )
cego 16.12.2022 2.48.8 Version released
cego 15.12.2022 2.48.8 Fix added in CegoAction::execViewCreate(), in case of grace mode, empty schema must be stored with created view to force recompile via CegoDistManager::reloadView
cego 28.11.2022 2.48.7 Version released
cego 28.11.2022 2.48.7 Fix for CegoSelect::nextTuple, _cacheSchema was not setup for union selects in case of empty result of the first union entry. This leads to an exception with cache claim leak. The claim leak has also been fixed by adding a cleanUp call to CegoSelect destructor
cego 26.11.2022 2.48.6 Version released
cego 26.11.2022 2.48.6 Introduced grace mode for graceful object creation. Using this mode, views and procedures can refer to objects, which still not exist. This mode might be useful for initial loads ( e.g. from a dump file ) to avoid dependency errors
cego 25.11.2022 2.48.6 Fixes added for CegoClient dump and batch mode, has been tested with more complex acc application
cego 24.11.2022 2.48.6 Fixes added in CegoClient for dump mode. Some attribute and attribute values have not treated correctly ( default values, dimension for fixed attributes, clob values )
cego 24.11.2022 2.48.6 More improvements for online backup / restore. Branch id is now added to archive log filename, so in case of new created or data file modified tablesets, the corresponding logfiles can be filtered. Archive logfile information for ready-for-archive and archived logfiles has been added to archive log information
cego 22.11.2022 2.48.5 Version released
lfcbase 22.11.2022 1.17.4 Version released
cego 22.11.2022 2.48.5 Further improvements for cgadm screen mode. confirm dialogs added and backup log history indicated for online backups in case of errors
lfcbase 22.11.2022 1.17.4 Further improvements for Screen::showFormBox and showInfoBox ( selected rows and newline treatment )
cego 21.11.2022 2.48.4 Version released
cego 21.11.2022 2.48.4 Added backup branch option for backup manager. So just valid backup files can be treated by the manager. New sample backup manager available in samples/chkdb
lfcbase 20.11.2022 1.17.3 Version released
cego 20.11.2022 2.48.3 Version released
lfcbase 20.11.2022 1.17.3 Fix for some geometries in Screen::showFormBox
cego 20.11.2022 2.48.3 Introduced Backup branch id for online backup verification. Due to datafile page id constraints, just online backups can be recovered inside one backup branch. Creation of a tableset and adding a datafile to a tableset violates this contraint, so a new backup branch is created.
cego 18.11.2022 2.48.2 Version released
lfcbase 18.11.2022 1.17.2 Version released
cego 18.11.2022 2.48.2 Small adaptions for cgadm screen mode window sizes ( corresponds to lfcbase-1.17.2 )
lfcbase 18.11.2022 1.17.2 Improvements done for Screen::showFormBox ( scrolling content in input mask )
cego 17.11.2022 2.48.1 Version released
lfcbase 17.11.2022 1.17.1 Version released
cegojdbc 16.11.2022 1.10.2 Version released
cegojdbc 16.11.2022 1.10.2 Added support for cego 2.48
cego 16.11.2022 2.48.0 Version released
lfcbase 16.11.2022 1.17.0 Version released
cego 15.11.2022 2.48.0 Uplift to next minor version, since many changes habe in CegoAdmScreen class ( was CegoAdmMon ). This requires lfc-1.17.0. Several stabilization fixes also have been added. For database xml file, a unique database id has been introduced to validate ticket file from performed online backups ( db id must match )
lfcbase 15.11.2022 1.17.0 Uplift to Version 1.17.0 since many changed have been made to Screen class ( was Monitor ). The changes require a recompile for consuming packages ( here : cego )
cego 13.11.2022 2.47.37 Fix added in CegoXMLSpace for user and role create routines. In case of already defined entities, exception was thrown before xml lock release Fix added in CegoXMLSpace::getActiveTableSet to also retrieve offline tablesets via includeOffline flag. This is needed for CegoLogThreadPool to archive occupied logfiles for tablesets in status offline ( for other reasons, runstate is set now at the beginning of the tableset stop procedure )
lfcbase 13.11.2022 1.16.8 Improvements done for ncurses based Monitor class. Added confirm box and improved form box
cego 08.11.2022 2.47.36 Version released
cego 08.11.2022 2.47.36 Fix added in CegoTableManager::updateTuple, for the given expression list, contained subqueries must be retrieved and analyzed for external table references. Since the external count was not evaluated correctly, this lead to a incomplete CegoSelect::getQueryId result. With enabled query cache, the following update did not work correct : update posrule pr set artid = ( select artid from article a where a.artnr = pr.artnr );
lfcbase 03.11.2022 1.16.7 Version released
lfcbase 03.11.2022 1.16.7 Some patches added to compile with newer MinGW framework ( Tested on Windows 10 )
cego 24.10.2022 2.47.35 Version released
cego 24.10.2022 2.47.35 Grammar fix in Cego.def to ensure _returnOnFirst variable is set to false for non return update statements ( added production NoUpdateReturnOpt )
cego 23.10.2022 2.47.34 Version released
cego 23.10.2022 2.47.34 Added join optimization fix in CegoSelect::buildJoinTables. Inadequate predicates ( e.g. not equal compare ) are not priorized for table join order any more. For this the method CegoPredDesc::prioOnJoin has been introduced
cego 19.10.2022 2.47.33 Version released
cego 19.10.2022 2.47.33 Fix in CegoFunction::getId, the GETCOUNT function still was not treated Some cleanup of source file was done (removed tilde files )
cego 30.09.2022 2.47.32 Version released
cego 30.09.2022 2.47.32 Fix added in CegoFactor and CegoFieldValue. To get the factor id for query cache management, a dedicated method was introduced in CegoFieldValue ( getId ) This method uses for DATETIME values valAsChain(true) ( to evaluate current timestamp in case of sysdate values ) and for all others toChain() ( to distinguish x = null and x = 'null' )
cego 24.09.2022 2.47.32 Added nohead option to cgclt to print out query results with no head information ( useful in combination with raw mode to retrieve pure data )
cego 23.09.2022 2.47.31 Version released
cego 23.09.2022 2.47.31 Fix added in CegoTableManager::alterDataTable, the altering table object has to be retrieved completely via getObject to setup data page id and last data page id. With the new introduced object manager method alterObject, these values are not copied during the alter procedure.
cego 23.09.2022 2.47.30 Version released
cego 23.09.2022 2.47.30 Fix in CegoObjectManager for alterTableObject. If a new system page has to be allocated, this page was not linked. This might lead to loss table objects for corresponding altering queries. Furthermore, the ObjectManager has been cleaned and shrinked in a was, that generic create and alter methods are now provided for all objects ( createObject and alterObject using encoding method inherited from CegoDecodableObject ). This results in shrinked code, since the create/alter operations are just implemented once.
cego 21.09.2022 2.47.29 Version released
cego 21.09.2022 2.47.29 Fix in CegoCaseCondition to allow null types in condition ( see dbcheck/check106.sql for a sample )
cego 19.09.2022 2.47.28 Version released
lfcbase 19.09.2022 1.16.6 Version released
cego 19.09.2022 2.47.28 In CegoFieldValue::castTo, cast from varchar to fixed is done now with now introduced BigDecimal::scaleTo method ( comes with lfcbase-1.16.6 ). This includes an appropriate rounding in case of precision reduction.
lfcbase 19.09.2022 1.16.6 Added new method BigDecimal::scaleTo to change scaling for an instance. This includes an appropriate rounding, if scaling is reduced
cego 16.08.2022 2.47.27 Version released
cego 16.08.2022 2.47.27 Fix in CegoProcBlock::toChain, dimension has still not been treated for fixed procedure variables
lfcbase 16.08.2022 1.16.5 Version released
lfcbase 16.08.2022 1.16.5 Fix in BigDecimal::operator ==, if _val, _scale and _isPositive does not match, we still have to call further checks ...
cego 10.07.2022 2.47.26 Version released
cego 10.07.2022 2.47.26 In CegoFieldValue, completed appropriate rounding via cast for decimal types to integer types
cego 08.07.2022 2.47.25 Post Log : Added FLOAT_TO_INT macro to CegoFieldValue module to cast to integer values with appropriate rounding
cego 08.07.2022 2.47.25 Version released
cego 08.07.2022 2.47.25 Added small patch for verification check to meet new BigDecimal patch in lfcbase ( Version 1.16.4 )
lfcbase 08.07.2022 1.16.4 Version released
lfcbase 08.07.2022 1.16.4 Fix added for BigDecimal to avoid rounding for zero trailing values, e.g. 119.00 / 100.00 was 1.1, should be 1.19
lfcxml 10.06.2022 1.3.5 Version released
lfcxml 10.06.2022 1.3.5 Fix added in XMLSuite::putAttribute to treat empty attribute values as Chain() instead of Chain("")
cego 08.04.2022 2.47.24 Version released
cego 08.04.2022 2.47.24 Fix in CegoFunction::evalFieldValue for case REPLACE. If replace string is null, then empty string is replaced instead of "null" string.
lfcbase 26.03.2022 1.16.3 Version released
lfcbase 26.03.2022 1.16.3 Fix added for BigDecimal comparison regarding negative values. For this, the privste method compAbs has been introduced
cego 27.02.2022 2.47.23 Version released
lfcxml 27.02.2022 1.3.4 Version released
cego 27.02.2022 2.47.23 Replaced Chain("") with Chain() for several. This was motivated by a observed bug for check constraint xml import, where a comparision between Chain() and Chain("") returned false
lfcxml 27.02.2022 1.3.4 In Element::getAttributeValue, for empty string now Chain() is returned instead of Chain("")
cego 17.02.2022 2.47.22 Version released
cego 17.02.2022 2.47.22 Fix in CegoLogManager::stopLog, the log handle must NOT be deleted, otherwise, a subsequent startLog and logAction method will result in a dump. This effect has been observed while importing a single table ( via xml import ) which failed, if the table already exists. In this case, no checkpoint is written and log handle i no more valid. A subsequent modifying db request then results in a core dump.
cego 13.02.2022 2.47.21 Version released
cego 12.02.2022 2.47.21 Added function getcount to retrieve current counter value for a specific counter
cego 12.02.2022 2.47.20 Version released
cego 12.02.2022 2.47.20 Fix in CegoTableManager::createBTree to catch exclusicve useObject timeout before committing btree. In this case, the already created btree object should be deleted. Fix added in CegoClient to active abort interrupt also during tuple fetch
cego 04.02.2022 2.47.19 Version released
cego 04.02.2022 2.47.19 More work has been done regarding clean shutdown of the database / tableset stop while busy db sessions still exist. For this, CegoDistCursr desctructor method has been stabilized, so no exception is thrown. Otherwise, double memory freeing of cursor resources might occur which results in a crash
cego 03.02.2022 2.47.19 In CegoTableManager::stopTableset, relocated the setTableSetRunState method above and added a sleep of DBM_LOCKDELAY. This gives hanging db threads a chance, to terminate save
cego 03.02.2022 2.47.19 Changed CegoDatabaseManager::useObject method to take pointer to CegoTableManager as an argument instead of threadId. The tablemanager is used to support thread termination in case of lock delays
cegojdbc 25.01.2022 1.10.1 Version released
cego 25.01.2022 2.47.18 Version released
cegojdbc 25.01.2022 1.10.1 Improved CegoDatabaseMetaData.getTables implementation to treat table type parameter for TABLE and VIEW objects. This implementation requires cego-2.47.18
cego 25.01.2022 2.47.18 Change in CegoJDBCInfo for table list retrievel. This JDBC meta information command is not split to tab and vie for dedicated retrievel of table and view objects
cego 23.01.2022 2.47.17 Version released
cego 23.01.2022 2.47.17 Fix in CegoFunction::clone, also if _exprList is empty, the function must treated and cloned completely including table manager reference. Otherwise, for user defined function with no arguments which are used in views will throw an exception
cego 09.01.2022 2.47.16 Version released
cego 09.01.2022 2.47.16 Code cleanup
cego 08.01.2022 2.47.15 Version released
cego 08.01.2022 2.47.15 Fix in CegoAttrComp for equal, lt and gt operators. The compMode ATTR was not treated correctly in a way, that the attrDesc part was not evaluated. This might lead to missing attr cond entries for sophisticated queries. A verify check ( verify008 ) has been added to check this case
cego 05.01.2022 2.47.14 Version released
cego 05.01.2022 2.47.14 Version released
cego 05.01.2022 2.47.14 In CegoDistManager::startTableset the method setCurrentLSN has to called before registerObjects since this methods might also trigger checkpoints
cego 04.01.2022 2.47.13 Version released
cego 04.01.2022 2.47.13 Fix in CegoXPorter::readIndexObject, index schema expects rather tablename instead of indexname. As a result binary and plain imports with index objects have failed.
cegobridge 31.12.2021 1.6.2 Version released
cegobridge 31.12.2021 1.6.2 Added some patches for better MySQL grammar support. This includes also escape character handling for several special characters ( \\, \n,\t etc )
cego 25.12.2021 2.47.12 Version released
cego 25.12.2021 2.47.12 Fix in CegoDistManager::renameLocalObject, before renaming the object, it has to be checked, if the new object name is already in use
cego 20.12.2021 2.47.11 Version released
cego 20.12.2021 2.47.11 Fix in CegoDistManager::startTableSet, the current lsn has to be setup before performing the cleanup option. cleanup uses bufferFix which might result in a checkpoint. For this the current lsn has to be setup
cego 16.12.2021 2.47.10 Version released
cego 16.12.2021 2.47.10 In CegoQuery, added execSchema which is copied for each execution call from _schema ( to have a virgin schema definition ). The execSchema then is enriched in the appropriate way. For the insert query, an addExprList variable was decleare to store the addition needed expression to complete the insert value list ( instead of adding it to _exprListArray ). After performing the query, the allocated and inserted expression have to be deleted. This implementation seems to be more useful for procedure based queries, where the intiantiated CegoQuery object is executed multiple times
cego 16.12.2021 2.47.10 In CegoDistManager, reload message for views, procedure and trigger is avoided now ( since this occurs for each db thread during startup )
cego 14.12.2021 2.47.9 Version released
cego 14.12.2021 2.47.9 In CegoAttrComp::setup(ListT** pJoinBuf, int offset) the _isSetup flag was not set to true for the posSetup case. This might lead to invalid error message for the following sample
drop if exists table sr;
create table sr ( srid int, srcode int);

drop if exists table vt;
create table vt ( vtid int, srid int, vtcode int);

drop if exists table svmap;
create table svmap ( srcode int, vtcode int);

drop if exists view srvtview;
create view srvtview as select vt.vtid as vtid, sr.srcode as srcode, vt.vtcode as vtcode from sr, vt where vt.srid = sr.srid ;
insert into sr values ( 1, 42);
insert into sr values ( 2, 43);
insert into vt values ( 1, 1, 4711);
insert into vt values ( 2, 1, 4712);
insert into vt values ( 2, 2, 4713);
insert into svmap values ( 42, 4711 );
insert into svmap values ( 44, 11);

select * from srvtview;
select * from svmap m where not exists ( select vtid from srvtview v where v.srcode = m.srcode and v.vtcode = m.vtcode );
cego 12.10.2021 2.47.8 Version released
cego 12.10.2021 2.47.8 Fix in CegoGroupSpace::getValueForAgg, The return value ( of type CegoFieldValue ) must be converted to a local copy, since the reference to the bufferpool might be invalidated
cegodbd 11.10.2021 1.5.2 Version released
cegodbd 31.08.2021 1.5.2 Fix of soem memory leaks in dbdimp.c for function cego_st_execute. The msg and schema attribute of statement handle have to be checked for allocated values, before new memory is allocated
cego 29.08.2021 2.47.7 Version released
cego 29.08.2021 2.47.7 Added format correction in CegoField::castTo for case VARCHAR to FIXED. In case of string values without leading zeros ( e.g. .345 ), leading zero is concated.
cegodbd 28.08.2021 1.5.1 Version released
cegodbd 28.08.2021 1.5.1 In dbdimp.h, changed MAXPROTSTRING to 15 ( from 10 ), since the protocol string "fastserial" does not fit in. Problems have just been observed on Ubuntu Linux
cego 04.07.2021 2.47.6 Version released
cego 04.07.2021 2.47.6 Fix in CegoFactor::evalFieldValue(), for case CegoFactor::QUERY, the fetched value must be saved to a local copy, otherwise the buffer could be overwritten by the subsequent nextTuple method call to complete the query for query cache. As a result, wrong values are returned in case of heavy buffer cache relocation.
cego 02.07.2021 2.47.5 Version released
cego 02.07.2021 2.47.5 Usage of new HashT methods ( getRangePos and RemovePos ) for CegoQueryCache to remove entries from query cache array more efficient
lfcbase 02.07.2021 1.16.2 Version released
lfcbase 02.07.2021 1.16.2 Added HashT::getRangePos and HashT::RemovePos for more efficient hash array manipulation
cego 02.07.2021 2.47.4 Version released
cego 02.07.2021 2.47.4 Fix in CegoQueryCacheEntry::cleanCache, reset of all relevant variables. Furthermore, in CegoQueryCache methods, remove from hasharray is checked for return code true
cego 06.06.2021 2.47.3 Version released
lfcxml 06.06.2021 1.3.3. Version released
dragon 06.06.2021 1.5.5 Version released
cego 06.06.2021 2.47.3 New generated parsers ( Cego.def and CegoAdm.def ) with dragon 1.5.5
lfcxml 06.06.2021 1.3.3 New generated xml parser with dragon-1.5.5
dragon 06.06.2021 1.5.5 For CPlusParser generator, catched exception in case of exceeded max token length. In the past, exceeded token length lead to seg faults ...
cegobridge 24.05.2021 1.6.1 Version released
cego 24.05.2021 2.47.2 Version released
cego 24.05.2021 2.47.2 Fix in CegoQueryHelper::checkIndexForPredicate, wrong tabSetId was used for getObjectListByTable, must be table specific
cegobridge 24.05.2021 1.6.1 In method void MySQLAction::storeVarcharType, dimension value was doubled, since MySQL calculates visible length for varchars and cego length in bytes. So for multibyte character encodings, length might exceed ...
cego 21.05.2021 2.47.1 Version released
lfcbase 21.05.2021 1.16.1 Version released
cego 20.05.2021 2.47.1 Rework of new hash array based query cache. The new introduced methods HashT::FirstInRange and HashT::NextInRange are used to find an appropriate hash array slot to replace entries in an occupied array.
cego 20.05.2021 2.47.1 Added cego command line mode setpwd to setup user password for offline database
lfcbase 20.05.2021 1.16.1 Added HastT::FirstInRange and HashT::NextInRange methods to retrieve hash value range
cegojdbc 31.03.2021 1.10.0 To support Spring Boot URL convention, the url has to be changed
Spring Boot checks for a leading jdbc token, so the new form is
cegojdbc 22.02.2021 1.9.8 Support for cego version 2.47 added
cego 21.02.2021 2.47.0 Version released
lfcbase 21.02.2021 1.16.0 Version released
cego 21.02.2021 2.47.0 Improvements done for query cache handling ( more support for nested queries, stabilization fixes )
cego 13.02.2021 2.47.0 Fix in CegoClient and CegoAction for comment parsing. Comment token in string are treated now. For this, a new method CegoQueryHelper::skipComment has been introduced
cego 13.02.2021 2.47.0 Integration of HashT into QueryCache for faster access of cached query entries.
lfcbase 07.02.2021 1.16.0 Introduction of template class HashT
cego 01.02.2021 2.46.8 Version released
cego 01.02.2021 2.46.8 Removed log entry in CegoDatabaseManager::checkTableSetRunState
cego 29.01.2021 2.46.7 Version released
cego 29.01.2021 2.46.7 Added fix in CegoTableManager::createBTree For btree value extraction, we also have to use valueFromSchema(tableSchema, btreeSchema). Otherwise, in case if inverted index attributes, the values are not extraced correctly
Sample :
create table t1 ( a int, b string(10));
insert into t1 values ( 1, 'alpha');
create btree b1 on t1(b,a); -- inverted, value for a would be not setup correctly
lfcbase 27.01.2021 1.15.1 Version released
lfcbase 27.01.2021 1.15.1 Fix in BigDecimal::div to treat negative values correctly ( for corScale calculation, the absolute values have to be used )
cego 24.01.2021 2.46.6 Version released
cego 24.01.2021 2.46.6 Fix in CegoObjectManager / CegoDatabaseManager added. The checkTableSetRunState method has been moved to CegoDatabaseManager. This ensures a single point of check definition.
In the previous version, tableset RECOVERY mode was not treated for useObject, unuseObject and objectExists method calls which might lead to crash recovery abort.
cego 03.12.2020 2.46.5 Version released
cego 03.12.2020 2.46.5 Fix in CegoTableManager for table altering. No type conversion allowed with alter modify and no length shrinking
cego 02.12.2020 2.46.4 Version released
cego 02.12.2020 2.46.4 Bad patch in 2.46.3 for CegoFunction::evalFieldValue. Procedure call is valid for nested calls inside stored procedures. So it is allowed to call procedure as a function. In any case, the precedure returns null value
cego 01.12.2020 2.46.3 Version released
cego 01.12.2020 2.46.3 Added MAXDELETEPAGE parameter to show parameter admin command
set default checkpoint value for new defined tablesets
added function check in CegoFunction::evalFieldValue to ensure, this is not a procedure without return value
cego 01.12.2020 2.46.2 Version released
cego 01.12.2020 2.46.2 Added error msg improvement in CegoProcBlock
cego 30.11.2020 2.46.1 Version released
lfcxml 30.11.2020 1.3.2 Version released
lfcxml 30.11.2020 1.3.2 Changed parser table to be static again ( was changed to dynamic because of some memory allocation investigations ) Also this solves the compile issue for Linux compiles
dragon 30.11.2020 1.5.4 Version released
cego 30.11.2020 2.46.1 Fix in CegoExpr::evalField, fixed dimension was still not handled here for ADD and SUB cases
dragon 30.11.2020 1.5.4 Added stdlib.h include for generated parser code with dynamic parse table allocation ( malloc is used ). For Linux compiles, this is required
lfcxml 29.11.2020 1.3.1 Version released
lfcxml 29.11.2020 1.3.1 Cleanup patch for some code reorganising and cleanup
cegobridge 28.11.2020 1.6.0 Version released
cego 28.11.2020 2.46.0 Version released
cegojdbc 28.11.2020 1.9.7 Version released
lfcxml 28.11.2020 1.3.0 Version released
lfcbase 28.11.2020 1.15.0 Version released
cegobridge 28.11.2020 1.6.0 Uplift patch for cego-2.46.x
cegojdbc 28.11.2020 1.9.7 Uplift patch for cego-2.46.x, no other patches added
lfcxml 28.11.2020 1.3.0 Changed XMLInStream::putFirst and XMLInStream::putNext to make dataList a reference parameter. Since this affects the API, thi is an uplift to 1.3.0. Furthermore, a memory bug was fixed in XMLSuite::nextChar for the scanData part. After increasing the j counter, everytime it must be checked for reaching the datalen. Otherwise this may result in strange memory effects
cego 27.11.2020 2.46.0 Added type dimension information for CegoField class. This enables the database to define length and dim information for fixed and decimal data types. For this the syntax has been expanded. Instead of storing RESERVED_BTREE_FLOATLEN for btrees on fixed or decimal columns, the specified length information is used now. Please note that database uplift to version 2.46.x requires a xml tableset export and import, since table structure information has been changed
lfcbase 27.11.2020 1.15.0 Fix in BigInteger::mul and BigInteger::div, signing was not treated ( e.g. -12 * 12 => -144 ( was 144 ) )
lfcbase 21.11.2020 1.15.0 Added template class GraphT for dependency graph implementations
cego 19.11.2020 2.45.36 Version released
cego 19.11.2020 2.45.36 Another query cache fix in CegoFunction:getId, rand and liob functions have been added to throw MOD_QUERY_ID exception, since for those function it can not be ad hoc decided, if the result is modified
cego 18.11.2020 2.45.36 Added fix in CegoViewObject::getId. Since it cannot be decided, if the underlying query result has been changed, we have to throw MOD_QUERY_ID
cego 18.11.2020 2.45.35 Version released
cego 18.11.2020 2.45.35 Added noinit option to cgadm tableset start command. With the noinit option, the configured init file will not be processed after tableset startup, otherwise this will be processed now ( if any configured ) All output messages are written to main log file.
cego 18.11.2020 2.45.35 Redirected output for CegoAction and CegoOutput added to print output to logfile. This is useful in case of tableset init file, where several SQL action could be performed
cego 18.11.2020 2.45.35 Fix in CegoAction::execSetCounter, new value must be checked for null value and if so, set counter to 0. The bug caused a seg fault ..
cego 17.11.2020 2.45.34 Version released
cego 17.11.2020 2.45.34 Further fix in CegoPredDesc::getFieldList, case CegoPredDesc::NULLCOMP, getFieldList method call added for pExpr1, in CegoPredDesc::setFieldListArray method calls added for _pC and _pNotPred. For this, setFieldListArray method has been introduced in CegoCondDesc. This fixes should complete case cond handling e.g. for aggregation queries. check097 has been expanded for this
cego 17.11.2020 2.45.33 Version released
cego 17.11.2020 2.45.33 Improved runstate handling in CegoDistManager
cego 16.11.2020 2.45.32 Version released
cego 16.11.2020 2.45.32 Also CegoObjectManager has been modified to check tableset run state for several methods. For this, method CegoObjectManager::checkTableSetRunState has been introduced.
cego 16.11.2020 2.45.32 Added check in CegoDatabaseManager::objectExists to verify, if corresponding tableset is online. So instead of "invalid object" exception, a tableset offline exception is thrown, which might be more useful
cego 14.11.2020 2.45.31 Version released
cego 14.11.2020 2.45.31 Added case-cond support for aggregation queries, e.g.
        sum(b) as sc,
        case when sum(b) > 700 
                then 'X'
		else 'Y' end as xy
from t1;
cego 11.11.2020 2.45.30 Version released
cego 11.11.2020 2.45.30 Fix in CegoCaseCond::evalField, all expression are evaluated now and are checked for type mismatch. Expressions must return the same type, otherwise this might lead to value evaluation problems. This fix also leads to fix in CegoFieldValue::getDim() and CegoFactor::evalField since now getDim ist used for field length specification which is also compared by CegoCaseCond::evalField
cego 28.10.2020 2.45.29 Version released
lfcbase 28.10.2020 1.14.6 Version released
cego 28.10.2020 2.45.29 Linux compatibility fix added in src/CegoAdmAction ( added stdlib.h and string.h include )
lfcbase 28.10.2020 1.14.6 Linux compatibility fix in basecheck/NetClient.cc ( include stdlib.h added )
lfcbase 26.10.2020 1.14.5 Version released
lfcbase 26.10.2020 1.14.5 Fix added in BigDecimal::div method. Dividend has to be checked for zero value, otherwise the method ends in an infinite loop by evaluating corScale value
cego 22.10.2020 2.45.28 Version released
cego 21.10.2020 2.45.28 Change in CegoAction::execProcCall and CegoAction::execFuncCall, procedure/function arguments are evaluated and cast in this methods now. This is needed, to support string to clob casting for procedure arguments. As a consequence the CegoProcedure::execute method has been changed to receive ListT instead of ListT.
cego 06.10.2020 2.45.27 Version released
cego 03.10.2020 2.45.27 Added format fix to CegoAction::formatTableInfo, to treat very long object names, max name length of all corresponding objects is now calculated and output is printed in appropriate format
cego 01.10.2020 2.45.27 Removed debug message in CegoProcBlock::execute exception block
cego 23.09.2020 2.45.26 Version released
cego 23.09.2020 2.45.26 Fix in CegoTableManager::insertDataTable, before call getObjectListByTable, type must be checked ( must be CegoObject::TABLE ), otherwise ( for system objects ) not found exception arises. This error may appear with the admin commands begin backup and end back ( stat information is written to bustat system table )
cego 18.09.2020 2.45.25 Version released
cego 18.09.2020 2.45.25 More rework on CegoFieldValue for improved cast handling ( especially on fixed values )
cego 18.09.2020 2.45.24 Version released
cego 18.09.2020 2.45.24 Typo fix in CegoTerm::evalField and CegoExpr::evalField
cego 16.09.2020 2.45.23 Version released
cego 16.09.2020 2.45.23 Fix in CegoProcVar::setValue, a castTo has been added to cast to appropriate target type
cego 10.09.2020 2.45.22 Version released
cego 10.09.2020 2.45.22 Fix in CegoTerm::evalField and CegoExpr::evalField, type and length calculation must correspond to cast logic in CegoFieldValue ( corresponding operators for mul, div, add and sub )
cego 03.09.2020 2.45.21 Version released
lfcxml 03.09.2020 1.2.11 Version released
cego 03.09.2020 2.45.21 Fix in CegoFieldValue::castTo, case VARCHAR_TYPE to FIXED_TYPE, plain integers have not been accepted. check091 added for this
lfcxml 03.09.2020 1.2.11 Sync patch for MinGW package build
cego 28.08.2020 2.45.20 Version released
cego 28.08.2020 2.45.20 This is a sync patch for package repositories to recompile with lfcbase-1.14.4
lfcbase 25.08.2020 1.14.4 Version released
lfcbase 25.08.2020 1.14.4 Patch in basecheck/FileTest.cc ( remove include ioctl.h ) for clean MinGW compile
lfcbase 25.08.2020 1.14.3 Version released
lfcbase 25.08.2020 1.14.3 Note : recompile for using packages required ( dragon + lfcxml + cego )
lfcbase 25.08.2020 1.14.3 Increased in class Chain STATICBUFSIZE from 50 to 100 and TMPBUFSIZE from 30 to 100
lfcbase 25.08.2020 1.14.3 Fix in Chain, replacement of sprintf with snprintf to avoid buffer overflow
cego 24.08.2020 2.45.19 Version released
cego 24.08.2020 2.45.19 Fix in CegoAction::insertArg to check for duplicate attribute specification in insert statement ( e.g. insert into t1 ( a, a ) values ... )
cego 14.08.2020 2.45..18 Version released
cego 14.08.2020 2.45.18 Fix in CegoClient for treating interactive input. Ctl-D input lead to segmentation fault, if used in multiline statements.
cego 29.07.2020 2.45.17 Version released
cego 12.07.2020 2.45.17 Patch in CegoAction::formatTableInfo. For size calculation of btree objects, null value must be used instead of INVALID, otherwise, wrong values are indicated during btree build
cego 08.07.2020 2.45.17 Patch in CegoLogManager::switchLogFile, we first have to switch log file and then change the status to OCCUPIED. Otherwise, the logfile archiver ( CegoLogThreadPool::shiftRedoLogs ) might access occupied logfile in parallel. Since this is a different thread and File::open seems to be not thread safe, bad things might happen ...
cego 31.05.2020 2.45.16 Version released
cego 31.05.2020 2.45.16 Fix in CegoQueryHelper::checkIndexForPredicate, index evaluation for alias objects was still not treated
Fix in CegoDistCursor::getPlan and CegoAction::getJoinPlanString to cover execution plan for alias objects
cego 29.05.2020 2.45.15 Version released
cego 29.05.2020 2.45.15 Fix in CegoObjectManager::getObjectListByTable, if object does not exist, an exception is thrown now.
This resulted in a fix for CegoQueryHelper::checkIndexForPredicate, where now the table alias has to be mapped to the correct physical table name ( via coList as a new method argument )
Fix in CegoAttrDesc::evalTableReferences to treat alias objects in joins
Grammar expansion to support inner/left outer/right outer joins without a condition. This might be useful for specific join order to use appropriate table indices ( see dbcheck/check088.sql )
cego 23.05.2020 2.45.14 Version released
cego 23.05.2020 2.45.14 In CegoMain, changed separator token for tsdef from ":;" to "=", since for mingw configurations, absolute path handling was broken. This resulted in adapations for mkdb and cgmkdb scripts.
cego 22.05.2020 2.45.13 Version released
cego 22.05.2020 2.45.13 For update with return statements, added the on first option. Since the return variable can only store one return values, this option specifies, if the update should return after first tuple or if all matching tuples should be updated.
cego 22.05.2020 2.45.13
cego 22.05.2020 2.45.13 In CegoClient, changed home variable to HOME also for MinGW compilations ( instead of HOMEPATH )
sysmt 12.05.2020 7.2.7 * Update to Vaadin 14.1.28
* Changed to NativeButtonRenderer in Maintain Report Panel
* Changed to InputStream in CSVExporter ( instead of temp file )
cego 15.03.2020 2.45.12 Version released
cego 14.03.2020 2.45.12 Patch in update with return clause. It seems to be useful, that in combination with return, update should return after first matching tuple providing the updated tuple in the return clause. So the values for the tuple can be stored in procedure variables.
create table t1 ( a int, b string(30));
insert into t1 values ( 1, 'DONE');
insert into t1 values ( 2, 'DONE');
insert into t1 values ( 3, 'WAIT');
insert into t1 values ( 4, 'DONE');
insert into t1 values ( 5, 'WAIT');
update t1 set b = 'DONE' where b = 'WAIT' return :a = a; 
Just the tuple with a = 3 is update and the value of a is returned in the procedure variable :a
cego 27.01.2020 2.45.11 Version released
cego 27.01.2020 2.45.11 Fix in CegoFieldValue::negate, for FIXED_TYPE values, trailing zeros have to be treated. Otherwise, select null - a from t1 where a = 0.10 will result in 0.1
cego 21.01.2020 2.45.10 Version released
cego 21.01.2020 2.45.10 Fix in CegoBtreeManager for duplicate null handling. The corresponding btree value has to be checked to be null. For this, the method CegoBTreeValue::isNull has been introduced
cegobridge 30.11.2019 1.5.4 Version released
cego 30.11.2019 2.45.9 Version released
cego 30.11.2019 2.45.9 Fix in CegoBTreeManager, the allowDuplicateNull flag was not treated any more. The duplicate handling has been moved from CegoBtreeNode to CegoBtreeManager
cegobridge 25.11.2019 1.5.4 Fixes in MySQLFormatter to treat several datatypes and default values
cego 24.11.2019 2.45.8 Version released
cego 24.11.2019 2.45.8 In CegoXMLSpace, changed access methods for mediator, primary and secondary in a way, that the default value ist the current hostname. In this case, no attribute values are set up. This reduces complexity and avoids to change the entries manually, if the hostname changes ( Again : do not edit the database xml without any deeper knowledge ) .
cego 24.11.2019 2.45.8 Improvement in CegoAdmAction for input handling. Used the same methods for nextChar and friends as in CegoAction
cego 23.09.2019 2.45.7 Version released
cego 22.09.2019 2.45.7 Added method CegoBTreeNode::verifyLeafFull for full btree verification in a sense, that each btree value is compared with the corresponding table data entry via datapointer reference
cego 22.09.2019 2.45.7 Fix in CegoSelect::setVIewCond, a view condition id has to be calculated which is later used for getQueryId(). Otherwise, wrong query cache entries are used in case of views with outer conditions
cego 05.08.2019 2.45.6 Version released
lfcbase 05.08.2019 1.14.2 Version released
cego 04.08.2019 2.45.6 Added command line option --fsync to enable physical disk synchronisation for logging and checkpointing. This options slows down database significantly but ensures consistent data in case of an operating system crash
lfcbase 04.08.2019 1.14.2 In configure.ac added check for darwin. This is required, since for File::flush implemention, darwin rather requires a fcntl call with option F_FULLFSYNC instead of fsync ( see OSX man page for fsync )
lfcbase 14.07.2019 1.14.1 Version released
lfcbase 14.07.2019 1.14.1 Adaptions made for clean mingw compiles
cego 14.07.2019 2.45.5 Version released
lfcbase 14.07.2019 1.14.0 Version released
cego 13.07.2019 2.45.5 In CegoClient, added input data check via File::hasData ( available with lfcbase 1.14.0 ). Now, pipe input is autodetected, so the command line argument "--pipe" has been removed
lfcbase 13.07.2019 1.14.0 Added File::hasData method to check for available input data from file descriptor ( implemented with POSIX poll function )
cego 13.07.2019 2.45.4 Version released
cego 12.07.2019 2.45.4 Code cleanup to avoid warnings with -Wswitch-enum
dragon 12.07.2019 1.5.3 Version released
dragon 12.07.2019 1.5.3 Small cosmetic patch in CPlusGenerator parse method. Instead of default, NULLACTION case has been added to avoid compile warnings with -Wswitch-enum
cego 11.07.2019 2.45.3 Release build verified for MinGW
cego 11.07.2019 2.45.3 Version released
cego 11.07.2019 2.45.3 Fix in CegoFieldValue::fastComp, the castTo method calls for t1 and t2 have to be switched, since first ist has to be checked to cast to native btree datatype ( used in CegoBTreeCursor::traceLog, inRange and fullMatch )
create table t1 ( a int, d datetime);
create btree b1 on t1(b);
select a from t1 where b = '12.07.2019'; -- should be casted from string to datetime
cegobridge 09.07.2019 1.5.3 Version released
cego 09.07.2019 2.45.2 Version released
cego 09.07.2019 2.45.2 Fix in CegoQuery::execute for INSERTBYSELECT_QUERY case. Since the selected tuples are clustered ( MAX_CLUSTERED_INSERT) we have to create a local copy for the corresponding field values. Otherwise, tuple information could be invalidated by relocated buffer pool pages
cegobridge 09.07.2019 1.5.3 MySQL SET lines are no more parsed. instead, the scanner ignores these lines
cego 07.07.2019 2.45.1 Version released
cego 07.07.2019 2.45.1 Treated alias insert queries with empty schema, e.g.
insert into a1 values ( 1, 'XXX');
cego 06.07.2019 2.45.1 Some patches added for alias management to allow alias defintions as a subset of the original table, e.g.
create table t1 ( a int, b string(10), c string(30))
create alias a1 on t1 ( a as ax, b as bx);
This has required some fixes in CegoAliasObject::mapSchema and CegoQueryHelper::mapFLA
cegobridge 06.07.2019 1.5.2 Version released
cegobridge 06.07.2019 1.5.2 Fix in MySQLAction::storeAttrColumn, _defaultOptString.length() and _nullOptString.length() must be compared greater 1 ( not 0 )
cegobridge 03.07.2019 1.5.1 Version released
cegojdbc 03.07.2019 1.9.6 Version released
cego 03.07.2019 2.45.0 Version released
cego 02.07.2019 2.45.0 Added trigger and alias object handling to CegoXPorter binary export and import
cego 02.07.2019 2.45.0 Added alias and trigger xml export and import feature ( trigger xport was still not implemented ) Fix in CegoDbThread::loadObjects for trigger reload, instead of triggerList.Next(), triggerList.First() was called, which result in an infinite loop in case of existing trigger objects
cegojdbc 01.07.2019 1.9.6 Support for cego-2.45 added. Fix in CegoFixed::toString, zero concatenation must be done from left, otherwise wrong conversion for low values occurs ( e.g. 22.03 is printed as 22.30 )
cego 30.06.2019 2.45.0 More work on table alias handling. Now works with more sophisticated select queries ( e.g. select ax from a1 aa where aa.ax = 1; ) For this, some fixes had to be done in CegoContentObject, since the the table alias attribute ( _tabAlias ) was not setup in constructor and other methods
cego 29.06.2019 2.45.0 Basic alias mapping for select works Here comes a sample SQL script
drop if exists table t1;
list alias;
desc alias a1;
drop if exists alias a1;
create table t1 ( a int, b string(30));
create alias a1 on t1 ( a as ax, b as bx );

insert into a1 ( ax, bx ) values ( 1, 'XXX');
insert into a1 ( ax, bx ) values ( 2, 'YYY');
insert into a1 ( ax, bx ) values ( 3, 'ZZZ');

select ax from a1;
cego 27.06.2019 2.45.0 Added alias mapping for insert, update and delete queries ( CegoQueryHelper::mapAliasPredicate still to implement )
cego 27.06.2019 2.45.0 In CegoDistManager::registerObjects, added registration for fkey, check, trigger and alias
cego 26.06.2019 2.45.0 Implemented base semantic actions for creating, listing and describe alias objects ( still no usage )
cego 25.06.2019 2.45.0 Added classes CegoAliasObject and CegoAttrAlias for table alias handling
cego 25.06.2019 2.45.0 Added table alias feature to grammar definition. Table aliases allow alternate table name and attribute name definitions for a table ( create alias ... )
cegobridge 22.06.2019 1.5.1 Added stored procedure grammar defintions to MySQLParser.def. Semantic actions still not implemented
cegobridge 21.06.2019 1.5.1 In MySQLAction::storeKey, changed btreename to _ since MySQL allows non unique key names
cegobridge 21.06.2019 1.5.1 Actived append mode in CegoBridge::main, which speeds up import performance significantly
cegobridge 21.06.2019 1.5.1 Added MySQL type support for type date and type bigint
cego 17.05.2019 2.44.14 Version released
cego 17.05.2019 2.44.14 Adapted copyright
cego 17.05.2019 2.44.14 Some improved exception handling in CegoTableManager::checkIntegrity ( more detail information about violated object )
cego 15.05.2019 2.44.14 Code cleanup CegoTableManager, drop/create/alter operations inside a transaction no more allowed
cego 12.05.2019 2.44.13 Version released
cego 12.05.2019 2.44.13 Version passed checkCrashRecovery with the following parameters
All relevant checkpoint situations have been observed over all run
cego 12.05.2019 2.44.13 Introduced CegoBufferPool::getCPCount() to return to current checkpoint count. This method is used by CegoTableManager, CegoObjectManager and CegoTransactionManager to decide, if a consitency checkpoint is required
cego 12.05.2019 2.44.13 Fix in CegoBTreeManager::checkDuplicate, the check for uflag ( returned CegoBTreeNode::valueExists ) to check for high value is not enough if, entries have been deleted from node.
Instead, all subsequent pages have to be checked until a value higher is found
cego 11.05.2019 2.44.13 Further recovery fix in CegoTableManager::insertDataTable In case of an insert exception ( e.g. duplicate pkey ), a checkpoint is forced now after deleteData to ensure file consistency
In CegoObjectManager::insertPageData a second checkpoint is forced after data copy, if a previous checkpoint has occured. Otherwise this insert might be ignored during recovery because of lower LSN
cego 11.05.2019 2.44.12 Version released
cego 11.05.2019 2.44.12
  • Fix added in CegoTransactionManager::commitUpdate, btree must be inserted with insertBTreeWithCommit
  • Fix added in CegoTransactionManager::getCrashAffectedTables, schema entry must be searched with Find(CegoField(Chain(), SYS_RB_TABLE))
cego 10.05.2019 2.44.12 In CegoTableManager::deleteDataTable, moved the LSN allocation at the end. If checkpoint occcurs during delete operation, the sync LSN might be higher and the delete operation is not recovered
cego 10.05.2019 2.44.12 Several fixes and improvements regarding crash recovery
  • In CegoRecoveryManager::recoverCurrentTransactionLog crash affected tables are analyzed at the beginning now. This must be done, since commit or rollback operations may occur in the recovery log
  • In CegoTransactionManager, getObjectWithFix method calls have been eliminated. The sustained fix on the pages avoids writing the pages during checkpoint, which may result in inconsistent rollback segments
  • In CegoObjectManager::createTableObject, the getNewFilePage method call was moved to the beginning. It may happen, that a checkpoint occur during the method call, which may result in inconsitent table entries ( newEntry is called, during getNewFilePage a checkpoint is forced which writes the incomplete page to disk and just after the checkpoint, the table information is encoded
cego 09.05.2019 2.44.11 Version released
cego 09.05.2019 2.44.11 Fix in CegoRecovery:::recoverCurrentTransactionLog, for LOGREC_INSERT and LOGREC_DELETE, the corresponding index have to be invalidated with CegoTableManager::invalidateIndexForTable. This logic was already implemented but removed in context of more sophisticated transaction handling ( patch 2.39.11 and around )
cego 08.05.2019 2.44.11 Small fix in CegoObjectCursor constructor, changed _isEOC = false to _isEOC = ( pageId == 0 ). This causes getFirst to return false in case of truncated objects ( can occur for RBSEG objects )
cegojdbc 05.05.2019 1.9.5 Version released
cegojdbc 05.05.2019 1.9.5 Added driver support for cego version 2.44
cego 04.05.2019 2.44.10 Version released
cego 04.05.2019 2.44.10 Fix in CegoAction::readChain() to support "\r" escape character Fix in CegoBTreeCursor::getFirst, in case of pAttrCond = 0, getNext has to be called if current leaf page is empty, otherwise cursor trace is incomplete ( just used for CegoDistManager::verifyTable
cego 04.05.2019 2.44.10 Fix in CegoBTreeNode::getChildPage, parameter traceMin has been introduced, which is needed to trace btree with CegoBTreeManager::deleteBTree. Otherwise, it might happen that btree entries are not found ( occurs just for non-unique btree objects )
cego 03.05.2019 2.44.10 Modified rc script to check for configured tablesets to be online ( via cgadm ) This requires additional configuration parameters in rc.conf
lfcbase 02.05.2019 1.13.1 Version released
lfcbase 02.05.2019 1.13.1 Stability patch in Datetime::asChain methods. The result of localtime is checked for null pointer ( may occur in case of very large long values, for which the instance has been created ) and in this case, an exception is thrown
cego 02.05.2019 2.44.9 Version released
cego 02.05.2019 2.44.9 Version released
cego 02.05.2019 2.44.9 Removed legacy method CegoAggregation::setInit/isInit
cego 02.05.2019 2.44.9 Fix in CegoQueryHelper::aggregateTuple, since the field value reference for aggregation field value might be no more valid during the aggregation run, a local copy is created via CegoFieldValue::getLocalCopy.
cego 28.04.2019 2.44.8 Version released
cego 27.04.2019 2.44.8 Added method CegoClient::treateEscape to handle escacpe charaters in command strings for interactive and batch mode ( newline, carriage return und tab )
cego 27.04.2019 2.44.8 Further optimization in CegoFunction::getReturnTypeLen, if the length argument in left, right substr function is a constant, this value is used for schema definition, otherwise the length of the source is used. Sample
select left(a,3) from t1 => length 3 is used for schema
select left(a,b) from t1 => definition of a is used for schema
Further ptimization done in CegoSelect and CegoAction for schema evaluation.
cego 26.04.2019 2.44.7 Version released
cego 26.04.2019 2.44.7 In CegoSelect::evalSelection, optimization provided in a way, that schema is not evaluated explizit anymore. Rather the previous analysed schema ( prepare method, _evalSchema ) is used. Since for dynamic field length, the resulting schema must be estiamated, this approach is ok.
cego 25.04.2019 2.44.7 Fix added in CegoFunction::getReturnTypeLen, evalFieldValue for expression values could fail, since FLA ist still not set up. For this case, now the cont value RETVAL_LEN is returned as an estimation.
cego 23.04.2019 2.44.6 Version released
cego 23.04.2019 2.44.6 Added some code cleanup and additional checks ( check082 and check083 )
cego 22.04.2019 2.44.5 Version released
cego 22.04.2019 2.44.5 Added fix in CegoAttrComp::setup, _posSetup variable was not setup correctly for case BTWN / VALUE2VALUE which might lead to invalid join array access.
cego 22.04.2019 2.44.4 Version released
cego 22.04.2019 2.44.4 Added fix in CegoExpr::evalField and CegoTerm::evalField to provide correct result type. This is required for fastserial protocol usage.
Also added fix in CegoFieldValue::operators +-*/ to cast to the largest value
cego 22.04.2019 2.44.3 Version released
cego 22.04.2019 2.44.3 Optimization added in CegoBufferPool::bufferFix. If there is no available slot in the bufferpool, a checkpoint is forced for the corresponding tableset ( already implemented ). Now if still no available slot, we force checkpoint for all other online tableset of the database. This might be useful, if the bufferpool is heavily occupied by other tablesets with dirty pages.
cego 21.04.2019 2.44.2 Version released
cego 21.04.2019 2.44.2 Fix in CegoTableManager::deleteDataTable, before resolving external table references via evalExtTableReferences, the subquery must be prepared, to resolve local attributes first
cego 21.04.2019 2.44.1 Version released
cego 21.04.2019 2.44.1 In CegoFIleHandler, introduced read only mode, which is used for tableset export
cego 21.04.2019 2.44.1 For connection pools ( db, admin, lock ) added a check for max connection queue length ( CegoDefs::NETMNG_MAXQUEUELEN ) to protect against port penetration
cego 20.04.2019 2.44.0 Version released
lfcbase 20.04.2019 1.13.0 Version released
cego 20.04.2019 2.44.0 Compile successful on mingw
lfcbase 20.04.2019 1.13.0 Compile succesful for mingw
cego 19.04.2019 2.44.0 Added authorization for log connection via dedicated loguser. The log user is setup via cgadm with "set loguser for " command
cego 19.04.2019 2.44.0 In CegoDbThreadPool, CegoAdminThreadPool and CegoLogThreadPool, pHandle variable was not initialized ( to zero ). This might cause a crash of the system in case of heavy request penetration or other net exception.
cego 19.04.2019 2.44.0 Added logging of incoming connection source information. This requires lfcbase-1.13.0, since ip source information has just been added to NetHandler class
lfcbase 19.04.2019 1.13.0 Added ip source information to NetHandler class, which is provided via Net::nextRequest.
cego 08.03.2019 2.43.4 Version released
cego 07.03.2019 2.43.4 Added fix in CegoSelect::getSchema, In case of union selects, the schema fields have to be checked for type compatibilty. For const null values in expression list, the schema is adapted to the appropriate type in deeper unions. This is required, since the schema types must be consistenst for the whole row set.
cego 21.02.2019 2.43.3 Version released
cego 20.02.2019 2.43.3 Fix in CegoAttrCond::asConjunctionList, CegoExpr and CegoDistCursor to treat external expression references ( setting up for view objects in selection tableset ). The FLA for the external predicate expressions has to be setup by CegoExpr::setExternalFieldArrayList. Otherwise the FLA for the external expressions might be overwritten by the nested view object which leads to unknown attribute errors. As a sample to reproduce this problem check080 has been added.
cegojdbc 29.01.2019 1.9.4 Version released
cegojdbc 29.01.2019 1.9.4 Patch added in CegoDataRow, the byte buffer has to be reminded, to allow multiple calls for CegoResultSet.getInt/getLong/etc.
cego 24.01.2019 2.43.2 Version released
cego 24.01.2019 2.43.2 Some code cleanup in CegoRecoveryManager
cego 21.01.2019 2.43.1 Version released
cego 21.01.2019 2.43.1 Sync patches in CegoBufferPool:writeCheckPoint to keep database konsistent in several crash cases. The patches habe been checkd with the samples/chkdb/checkRandomCrash Script for about 1000 crashes and recoveries.
cegojdbc 15.01.2019 1.9.3 Version released
cegojdbc 15.01.2019 1.9.3 Added compatibility check for cego version 2.43. Since there not have been made any protocol changes, the driver already works with cego version 2.43.x
cego 13.01.2019 2.43.0 Version released
cego 12.01.2019 2.43.0 Adapt cego rc file to support cpdump and cleanup tableset start options
cego 12.01.2019 2.43.0 Introduced checkpoint dump option. With this option enabled at tableset startup time, first a dump of the dirty buffer pool pages is written. If written completely, the dump file is commited ( renamed ) and the recorded pages are physically written to the data file.
This option avoids inconsistent data file in case of a system crash during the checkpoint procedure. After system crash, the dump file is checked and if commited, the dumped pages are written again to the data files. This operation is idempotent and so can be repeated several times until the dump has been completely written to datafiles and is removed then.
lfcbase 07.01.2019 1.12.7 Version released
lfcbase 07.01.2019 1.12.7 Small patch in ShmTest.cc to avoid seg fault for MinGW "make check" ( Shared Memory is just dummy implementation for MinGW )
cego 05.01.2019 2.42.17 Version released
lfcbase 05.01.2019 1.12.6 Version released
cego 05.01.2019 2.42.17 Improvement for datafile cleanup added. For this, method CegoTableManager::cleanTableSet has been introduced which traces through all relevant database objects and marks allocated pages ( CegoFileHandler::commitPageEntry ). In case of a bitmap diff, the commited bitmap is written to the datafile.
This method allows a complete cleanup of data files after a crash where no allocation leaks result anymore.
The method has been proven with crashCheckAndRecovery
cego 04.01.2019 2.42.17 Further code cleanup in CegoFileHandler, Changed fixStat type from int to unsigned and size calculation for bitmap handling consequently to unsigned
lfcbase 04.01.2019 1.12.6 Introduction of constructor Chain(unsigned) and method asUnsigned
cego 02.01.2019 2.42.16 Version released
lfcxml 02.01.2019 1.2.10 Version released
dragon 02.01.2019 1.5.2 Version released
lfcbase 02.01.2019 1.12.5 Version released
cego 02.01.2019 2.42.16 Code cleanup to compile warning free with -Wall
lfcxml 02.01.2019 1.2.10 Changed generated XML parser code to virtual destructor
dragon 02.01.2019 1.5.2 Small code cleanup for clean compile -Wall. Changed to code generation with virtual destructor
lfcbase 02.01.2019 1.12.5 Code cleanup done with elimination of all warning thrown by -Wall
cego 02.01.2019 2.42.15 Version released
cego 02.01.2019 2.42.15 Small improvement in CegoBufferPool / CegoFileHandler for page backup handling ( consolidation if isPageBackup and isPageMarked to needPageBackup ). This should improve checkpoint performance
cego 01.01.2019 2.42.15 Introduced CegoBufferPool::optimizePool method. This method analyses the bufferppol and if possible, relocates often used pages page entries to its optimal position ( pageIndex = hashId ). This may result in paging out of other pages with lower fixstat values. The method is called during every checkpoint.
cego 29.12.2018 2.42.14 Version released
cego 29.12.2018 2.42.14 Quality check with 1000 loops in checkCrashAndRecovery performed successful ( for redo logfile size = 10000000, simple case, no transaction checkpoint split )
cego 29.12.2018 2.42.14 Added CegoTableManager::resetTemp & friends methods to perform a reset of the temp space after starting a tableset. This ensures, that allocation leaks caused by a system crash are removed
cego 29.12.2018 2.42.14 Redesign of CegoBTreeNode::valueExists compare handling. In some transactional cases, the old logic did not reach valid entries. For this a specific search down / search up inside the tree node has bee added.
cego 28.12.2018 2.42.14 More investigation with checkCrashAndRecovery. As a result, tastep information is now also stored in log entries ( CegoLogRecord ). This is required, to decide about the visibility of table data during recovery for open transaction. This is ugly stuff ...
Normally, this is a minor change to version 2.43.x since format of log files is incompatible now. But there is now impact for normal operation ( just in case of crash or backup recoveries ). So I leave the version to 2.42.14
cego 27.12.2018 2.42.14 More checks with checkCrashAndRecovery using larger transaction sizes. This lead to a transaction handling bug in CegoBtreeNode::isTupleVisible, tuple state must be NOT in state OBSOLETE to be visible. Otherwise, the small script breaks :
start transaction;
insert into t1 values ( 1, 'XXX');
update t1 set b = 'FFF' where a = 1; -- here comes a duplicate error
cego 26.12.2018 2.42.13 Version released
cego 26.12.2018 2.42.13 Several fixes added for recovery procedure. LOGREC_DELETE_COMMIT and LOGREC_UPDATE_COMMIT log message types have been removed, index rebuild is done at the end of recovery. This must be done, otherwise in case of open transactions, btree references might be corrupted.
This whole recovery process has been tested and verified with a powerful script ( samples/chkdb/checkCrashAndRecovery ), which generates random insert/update/delete operations on a table in transactional chunks ( using cgblow --mode=arb2 ) and the daemon is crashed and restarted. The table content before and after crash is compared then. The recovery procedure seems to be stable now.
cego 25.12.2018 2.42.12 Version released
cego 24.12.2018 2.42.12 Changed CegoBufferPool::bufferRelease in a way, that frees pages are just saved in a list. the pages are deleted from datafile if the next checkpoint is reached ( writeCheckPoint method ). This ensures transaction save handling also for clob recovery operations.
cego 29.11.2018 2.42.11 Version released
cego 28.11.2018 2.42.11 Remwork of CegoTableManager::dropObjectSynced method. Cleanup of implementation in a sense the useObject / unuseObject is consequently moved this level ( was not for procedures and views ). Also fixed issue of missing pDBMng->removeObject call
cego 20.11.2018 2.42.10 Version released
cego 20.11.2018 2.42.10 More restrictive checks for drop table with referenced foreign key added. Now it is not allowed to drop a table with existing key reference ( except self refering tables )
cego 19.11.2018 2.42.10 Added truncate command for truncating table object. Redesign also done for dropTable method in terms of log messages. Now one single log message in created for dropping a table ( instead of dedicated messages for each corresponding object like index, key, check, et )
lfcxml 12.11.2018 1.2.9 Version released
lfcxml 12.11.2018 1.2.9 Added missing includes string.h and stdlib.h in Element.cc and xmltext.cc required for clean Linux compile
cego 12.11.2018 2.42.9 Version released
cego 10.11.2018 2.42.9 Fix in CegoDistManager::createLocalDataTable, exception catched if primary could not be created and data table is removed in this case
Some method redesign in CegoBTreeManager and CegoBTreeNode for better handling of unique btrees. CegoBTreeNode::getChildPage now returns the upper page, for this also the method CegoBTreeValue::iEqualHigher has been introduced. Duplicates are checked with new introduced method CegoBTreeNode::checkDuplicate
cego 08.11.2018 2.42.8 Version released
cego 07.11.2018 2.42.8 Some improvements added regarding procedure exception handling
cego 06.11.2018 2.42.8 restrictions added for lock Table / unlock table command ( in CegoDatabaseManager::unuseObject ) to ensure, that unlock operations are just valid, if the corresponding table is locked by the calling thread
cego 06.11.2018 2.42.7 Version released
cego 06.11.2018 2.42.7 Adaptions made in CegoXPorter for new memory outstream mng in lfcxml 1.2.8
lfcxml 06.11.2018 1.2.8 Version released
lfcxml 06.11.2018 1.2.8 Changed memory management for outStream handle in Element ( is done by producer now )
lfcxml 04.11.2018 1.2.7 Version released
lfcxml 04.11.2018 1.2.7 Patch in XMLSuite to treat CDATA handling in a better way. The detection of CDATA endtoken ( "]]>" ) was not handled correctly, if moreData has to be called during read the endtoken.
To handle this, a lookahead has been introduced and as a consequence, the XML grammar has been modified ( read of endtoken is completely done by scanner, no more grammar symbols are needed anymore )
cego 02.11.2018 2.42.6 Version released
cego 02.11.2018 2.42.6 Small optimizsation done in CegoBTreeCursor. Instead of using releaseDataPtrUnlocked and claimDataPtrUnlocked method, now the combined method releaseAndClaimDataPtrUnlocked is used. In case of traversing tuples which are located in the same page, this avoids bufferFix / bufferUnfix operations, since the requested pageId is already fixed ( the releaseAndClaim method has also been modified for this )
cego 01.11.2018 2.42.5 Version released
cego 01.11.2018 2.42.5 Add avgFixTry attribute to bufferpool information to indicate the average number of fix tries
cego 01.11.2018 2.43.0 Recognized a fatal design issue with new primary key design : since the tuple data store within primary key has no static data pointer anymore, there no efficient and trivial way to handle further index object on this data. Actually, I have no idea how to deal with this issue, so I stopped progress of this version. Detected bugs ( detect duplicated primary in btree nodes and small issue in CegoXPorter ) are fixed with version 2.42.5
cego 28.10.2018 2.43.0 XML and binary export/import with new primary key structure works now
cego 27.10.2018 2.43.0 Primary key adaptions made for CegoXPorter.
Old XML format still can be imported ( primary key handling ) but NOT binary/plain export files
cego 27.10.2018 2.43.0 Fix added to CegoBTreeNode::getChildPage. For unique trees and primary trees, just the leaf nodes have been checked. Also the tree nodes have to be checked for duplicates, otherwise, duplicate entries may occur.
cego 27.10.2018 2.43.0 Implementation of CegoTableManager::createPrimaryKey added. This methods converts an existing table to a btree table ith primary key. The syntax for primary key creation has been changed ( Now : alter table xxx add primary key ( x, y, z ) )
cego 25.10.2018 2.43.0 More work on CegoBTreeManager and friends to complete insert for primary btree values ( split node )
Extension for CegoBTreeCursor to support traversation of tables with primary key. Logic basically works !
cego 23.10.2018 2.43.0 CegoBTreeManager and friends have been adapted for primary key handling. Inserting primary btree values basically works with first leaf page
cego 21.10.2018 2.43.0 Started with alternate primary key implementation. In this sense, the primary key stores the complete tuple data ( instead of datapointers to records in a table object ). In case of index traces, this avoids several bufferfix/bufferunfix operations and should result in a better database performance.
Still pretty much work ahead ...
cego 20.10.2018 2.42.5 Small optimization in CegoBufferPool::bufferFix, in step 1, the pool is locked not outside the loop over numtries. This decreased locking granularity but avoids some lock operation and should improve bufferpool performance
lfcbase 20.10.2018 1.12.4 Fix in NanoTimer, changed return value for getSum method to unsigned long long
cego 15.10.2018 2.42.4 Version released
cego 15.10.2018 2.42.4 Fix in CegoAction::execListCounter, changed scheme type to LONG_TYPE, which is important for fastserial protocol
lfcbase 15.10.2018 1.12.3 Version released
lfcbase 15.10.2018 1.12.3 In basecheck/ChainTest, the visibelLength Test has been disabled for MinGW compiles since setlocale seems to be broken in MinGW
cego 14.10.2018 2.42.3 Lock timeout definitions have been increased from 10000 to 30000 ms. ( CegoDefs.h )
cego 13.10.2018 2.42.3 In samples/rc/cego startscript added cego_protocol parameter to support fastserial mode
cego 13.10.2018 2.42.2 Version released
cego 13.10.2018 2.42.2 Version released
cego 13.10.2018 2.42.2 Fix in CegoAction::formatTableInfo, the field types for schema attributes PAGES and RELEVANCE have to changed to INT_TYPE, for fastserial protocol this is important
cego 01.10.2018 2.42.1 Post note : This patch contains a fix for datetime value encoding/decoding in CegoFieldValue. It still was done with 4 byte ( since version 2.40.0, cego uses 8 byte datetime length )
cegojdbc 01.10.2018 1.9.2 Version released
cegojdbc 01.10.2018 1.9.2 Completed data type handling in CegoDataRow
cego 30.09.2018 2.42.1 Version released
cego 29.09.2018 2.42.1 Fix in CegoTableManager::alterDataTable, for case RENAME, the schema is checked for already existing attribute name
cegojdbc 29.09.2018 1.9.2 Completed data type handling in CegoDataRow::valueAsString
cegojdbc 25.09.2018 1.9.1 Version released
cegojdbc 25.09.2018 1.9.1 Set TCP_NODELAY flag for sockets in CegoNet.java ( via Socket.setTcpNoDelay(true). Disabling the Nagle's algorithm leads to a much better network performance, since the latencies for any response packets is reduced significantly. ( For scenarios with heavy parallel load with many sustained queries, I observed speedup up to 3 or 4 times faster )
cegobridge 23.09.2018 1.5.0 Version released
cegobridge 23.09.2018 1.5.0 Added support for fastserial protocol
cegodbd 23.09.2018 1.5.0 Version released
cegodbd 23.09.2018 1.5.0 Added support for fastserial protocol
cegojdbc 23.09.2018 1.9.0 Version released
cego 23.09.2018 2.42.0 Version released
cego 21.09.2018 2.42.0 Fix in CegoDbThread::serveRequest, case GETBLOB and GETCLOB, the clobref still was not treated there, which lead to corrupted lob results if, the lob service is used ( normally via JDBC with the ResultSet.getBlob/getClob methods )
cego 20.09.2018 2.42.0 Small protocol modifications also made for serial protocol ( cego type id is now transfered to client ) which incompatibles serial protocol with earlier versions ( < 2.42.x )
cegojdbc 20.09.2018 1.9.0 Add support for fastserial protocol.
cego 19.09.2018 2.42.0 Added new network protocol fastserial for improved transfer performance from db client to db server ( and vice versa ). The fastserial protocal ist based on the native serial protocol but is no more plain ASCII/UTF. Instead field length information is transferred as plain integers. In this sense, the protocol is machine dependent.
cego 18.09.2018 2.41.7 Version released
cego 17.09.2018 2.41.7 Performance improvement in CegoQueryHelper::decodeFVL, changed to a more efficient way to setup field values
cego 17.09.2018 2.41.7 Performance improvement in CegoSelect::evalSelection, in case of aggregations and grouping, the field value is already setup by getFieldList method, so no need to iterate through pJoinBuf
cego 16.09.2018 2.41.6 Version released
cego 16.09.2018 2.41.6 Performance optimization in CegoObjectManager, changed CegoObjectManager::claimDataPtrUnlocked to return void, the CegoBufferPage is returned as a reference parameter, this avoid copy operation for the buffer page variable
cego 16.09.2018 2.41.6 Removed unused CegoFieldValue variables in CegoBTreeCursor methods inRange / fullMatch. This may impact cursor performance, since this methods are heavily called.
cego 15.09.2018 2.41.6 Optimization done in CegoTableManager::getClobs/getBlobs, lobList parameter changed to reference instead of returning the lobList. This avoids copy operation of the lobList during insert or update which might be pretty expensive
cego 14.09.2018 2.41.6 Fix/optimization in CegoBTreeValue, the static array _idxArray was removed. Instead, memory is allocated dynamically, when used ( just, if method valueFromSchema is called in btree insert case ). This should improve performance for btree cursor, since, no memory must be stacked, if a btree value variable is declared
cego 14.09.2018 2.41.6 Several code optimizations regarding method parameter handling ( rather try to use reference instead of return copy, e.g. changed CegoExpr::getFieldList and friends
cego 03.09.2018 2.41.5 Version released
cego 03.09.2018 2.41.5 Fix in CegoAttrCond::setup(ListT** pParentJoinBuf, int parentOffset, ListT** pJoinBuf, int offset), pAC->if isParentSetup() returns true, the loop must be continued, otherwise the _attrCompSet setup will be not completed. The following script returns a wrong result ( zero rows ):
drop if exists table t1;
create table t1 ( a int, b string(10), c string(10));

insert into t1 values ( 1, 'W0001', '001');
insert into t1 values ( 1, 'W0001', '003');
insert into t1 values ( 1, 'W0138', '002');
insert into t1 values ( 1, 'W0138', '001');

select * from t1 tx where exists ( select * from t1 ty where tx.a = ty.a and tx.c = ty.c and ty.b = 'W0001' ) and tx.b = 'W0138';
With the patch, result is
|        tx |        tx |        tx |
|         a |         b |         c |
|         1 |     W0138 |       001 |
cego 31.08.2018 2.41.4 Version released
cego 31.08.2018 2.41.4 Added database functions blobref and clobref to indicate the amount of lob references for a given lob
cego 30.08.2018 2.41.4 Fix in CegoDbThread::serveRequest, case PUTBLOB and PUTCLOB, the blobRef/blobSize setup was not handled correctly here
cego 30.08.2018 2.41.3 Version released
lfcbase 30.08.2018 1.12.2 Version released
lfcbase 30.08.2018 1.12.2 Fix in basecheck/DateTimeTest. Added an #ifdef MINGW32 for datetime values beyond 2040
cego 30.08.2018 2.41.3 Fix in CegoFactor::checkLob, the method implementation was still not complete. This might lead to problems during crash recovery of update operations
cegojdbc 29.08.2018 1.8.4 Version released
dragon 30.07.2018 1.5.1 Version released
dragon 30.07.2018 1.5.1 Fix in src/Main.cc and samples/gxmain-master.cc. Include of stdlib.h added, since this is needed for Linux compiles ( exit function )
In GoLangGenerator.cc scanner code was added to complete scanner state machine ( there still was missing some code for transition jumps )
dragon 27.07.2018 1.5.0 Version released
dragon 26.07.2018 1.5.0 Added code generation for GoLang. GoCode is generated, compiles and basically works Still some cleanup stuff required
cego 29.06.2018 2.41.2 Version released
cego 29.06.2018 2.42.2 Improvement for join optimizer in CegoSelect::consolidateConjunctionList. With the new introduced method CegoQueryHelper::checkIndexForPredicate the conjunction list elements are checked. This leads to a better join order, where index related predicates are evaluated first.
cego 19.06.2018 2.41.1 Version released
cego 18.06.2018 2.41.1 Performance optimization for bulk insert ( insert into t1 values ( 1, 'XX'),(2,'YY'),... ) Just with the last inserted tuple, the online redo logs are flushed to disk. For the the method paramter flushLog has been introduced for several methods ( CegoLogManager::logAction, CegoBufferBool::logIt, CegoTableManager::insertDataTable )
cego 17.06.2018 2.41.0 Version released
cego 16.06.2018 2.41.0 Modified lob handling in a way, that references to lobs are managed. This avoids expensive lob copy operations in case of update queries with lob values.
Since the lob reference counter is stored inside the lob, this incompatibles the datafile format with previous versions. In case of a tableset with lob values, an export and import is required for this version
Also lob recovery handling for update operations is fixed in this version ( CegoQueryHelper::encodeUpdRec and CegoQueryHelper::decodeUpdRec )
cego 14.06.2018 2.40.14 Patch in CegoProcedure::execute to treat cast from string to clob. For this the method parameters had to be expanded to provide TableManager and TableSetID which is required, to add a clob ( in case of a string to clob cast )
cego 14.06.2018 2.40.13 Version released
cego 13.06.2018 2.40.13 Fix in CegoDistCursor, class variable _useCache was not initialized, might lead to poor cursor performance, since the table data is cached although cache not enabled. Performance improvement for insert query. In case of array insert ( insert into t1 values ( 1, 'XX'), (2, 'YY'), (3, 'ZZ') ... ) insert operations are handled in a more efficient way
cego 12.06.2018 2.40.12 Version released
cego 12.06.2018 2.40.12 Modification for transaction handling in CegoDistManager::deleteLocalDataTable. Now the delete operation is executed inside a single transaction ( for any performance in the past, nested transactions had been executed in CegoTableManager::deleteDataTableEntrySynced, which leads to very poor delete performance )
cegojdbc 09.06.2018 1.8.3 Version released
cegojdbc 09.06.2018 1.8.3 Fixes in CegoSerialTokenizer for correct Umlauthandling.For this, the source string is converted to a byte array, since just in the array, the correct token positions can be detected ( Java treats umlaute as single characters )
cego 08.06.2018 2.40.11 Version released
cego 08.06.2018 2.40.11 Fix in CegoBTreeNode::operator = , _entrySize was not copied. This might lead to btree build problems
cego 08.06.2018 2.40.11 Fix in CegoBTreeNode::operator = , _entrySize was not copied. This might lead to btree build problems
cego 06.06.2018 2.40.10 Version released
cego 03.06.2018 2.40.10 In CegoFieldValue, small performance improvements for compare methods ( isEqual, isLess, isMore ... ) are made
cego 01.06.2018 2.40.9 Version released
cego 01.06.2018 2.40.9 In CegoFieldValue::fastComp for type VARCHAR now memcmp is used rather than strcmp. For type DATETIME, the compare is directly done on field pointers ( instead of copying to local unsigned long long variables )
cego 01.06.2018 2.40.9 Performance improvement in CegoAttrComp / CegoAttrCond classes. In the CegoAttrComp::setup method, the field value position is now also cached. So for subsequent method calls, the cached field array position is used instead of searching the position by looping through the array.
cego 25.05.2018 2.40.8 Version released
cego 25.05.2018 2.40.8 Modification of tableinfo information. Just object information is returned now without size information for each object. For large table configurations, this avoids response delay. To get size information, the command tablesize has been introduced. In this sense, tableinfo output is a subset of tablesize output.
cego 24.05.2018 2.40.7 Version released
cego 23.05.2018 2.40.7 Further performance improvement for advanced select queries. In CegoSelect, the attribute cache in not cleared anymore. This assumes to setup the the FLA structure with CegoExpr::setFieldListArray method. For this, the CegoExpr::evalField method had to be modified, since CegoSelect::getSchema had set up field list array with a different structure. Now the field information is given as an argument to getField, so the field list array has not to be set up.
It has been observed, that for sophisticated queries the performance improvement can be up to 30% depending on the number of join fields and joined tables.
cego 22.05.2018 2.40.6 Version released
cego 15.05.2018 2.40.6 Patch added for inner/outer joins with null condition in where clause ( e.g. select t1.a, t2.d from t1 left outer join t2 on t1.a = t2.c where t2.d is null ). The where condition has to be evaluated out of join, otherwise the may lead to wrong results. For this reason, n CegoDistCursor::joinSetup, the _innerCond and _outerCond variables are set to empty now in case of inner/outer join.
cego 13.05.2018 2.40.5 Version released
cego 11.05.2018 2.40.5 Small optimization for inner joins added. In CegoDistCursor::distSetup, _doEval is set to false, if the join type is inner join. For any outer joins, the evaluation is still required
cego 09.05.2018 2.40.4 Version released
cego 08.05.2018 2.40.4 Performance patch in CegoBTreeCursor::getFirst added. Instead of tracing each value in the first leaf node to find the entry point, this is now done by a binary search. This reduces search efforts from O(n) to O(log(n)) where n is the number of maximum index entries per btree leaf node.
This might reduce query execution time for complex joins with extensive use of btree cursors
cego 06.05.2018 2.40.3 Version released
cego 06.05.2018 2.40.3 Version released
cego 06.05.2018 2.40.3 Perormance patch in CegoBTreeCursor::traceLow / fullMatch / inRange methods. Instead of creating the field value as a local copy, the value reference from the btree value is used. This speeds up btree cursor trace performance about 20% faster
cego 04.05.2018 2.40.2 Version released
cego 02.05.2018 2.40.2 Improved version of CegoQueryHelper::decodeFVL, the assumption is, that column ids are coming in an increased order in field value list. So we do not need to loop over fvl to find the corresponding column id. Rather we iterate together with decoding buffer to perform decoding in O(n) ( instead of O(n*m) ) where n = number of matched rows and m number of columns in table
cegojdbc 30.04.2018 1.8.2 Version released
cegojdbc 30.04.2018 1.8.2 Improvement in class CegoNet::receiveDoc, If the message buffer exceeds, instead of an exception now the message buffer is reallocated. This avoids any definition dependency between database server and JDBC driver to correlate the appropriate buffer sizes.
cego 28.04.2018 2.40.1 Version released
cego 28.04.2018 2.40.1 New definitions in CegoDefs
#define NETMNG_MAXBYTECOUNT 10000000
Introdduction max maxByteCount allowed to increase MAXTUPLECOUNT, which should result in a better network performance. MAXTUPLECOUNT is still need for XML protocol ( legacy reason )
cego 28.04.2018 2.40.1 In CegoOutput, extended setDbHandle method to parameter maxBytePerMsg. In CegoDbHandler introduced method numCollected. So now also the amount of collected bytes is counted and is limited to a defined value per network message
cegojdbc 27.04.2018 1.8.1 Version released
cegojdbc 27.04.2018 1.8.1 Patch in CegoSerialTokenizer::nextToken , _pos has to be checked for less than _stream.length in while loop
lfcbase 27.04.2018 1.12.1 Version released
lfcbase 26.04.2018 1.12.1 Patch in File::flush for MinGW64, fsync functions seems not to be supported for MinGW64, so we flush stays empty
cegojdbc 25.04.2018 1.8.0 Version released ( supports cego 2.40.0 )
cego 25.04.2018 2.40.0 Version released. Please note, that this version is incompatible to previous versions in terms of datafile format and serial network protocol. A complete database export/import ( xml or sql dump ) is required for update. Futhermore lfcbase-1.12.0 base library is required.
lfcbase 25.04.2018 1.12.0 Version released
cego 25.04.2018 2.40.0 Performance patch in CegoTableManager::putClobData/puBlobData. The getNewFilePage method now is called with doAppend = true. In case of large filled database, clob import performance was pretty poor
cegojdbc 24.04.2018 1.8.0 Support added for cego version 2.40.0
cego 24.04.2018 2.40.0 Performance patch for CegoSerial class added. Now the token length is given to avoid any escape character handling. Please note, that this patch is incompatible to cego versions before 2.40
lfcbase 24.04.2018 1.12.0 Added Tokenizer::rawRead method to read a given number of bytes raw from the token stream
cego 23.04.2018 2.40.0 Support for lfcbase-1.12.0 API added. Please note, that this version is incompatible to previous database files. An XML export or SQL dump before update is required to be able to restore the database after upgrade
lfcbase 23.04.2018 1.12.0 Changed Datetime API, instead of provide asInt method, now the more advanced asLong method is implemented to handle 64 bit datetime values ( 2040 and beyond )
cego 20.04.2018 2.39.16 Version released
lfcbase 20.04.2018 1.11.9 Version released
cego 19.04.2018 2.39.16 Fix in CegoObjectManager::insertPageData, new data entry is checked now for maximum available space in page. This is done, if a new data page has to be allocated and the data entry still fits not into page
cego 19.04.2018 2.39.16 Added File::flush method to CegoLogManager and CegoFileHandler to synchronize log data and datafile data to disk
lfcbase 19.04.2018 1.11.9 Introduced new method File::flush to force synchronization of data to disk
cego 11.04.2018 2.39.15 Version released
cego 10.04.2018 2.39.15 Fix in dbcheck/expimpcheck, test plan was not set up correctly
In CegoXPorter and CegoExpImpStream, row export information was added again to indicate overall row export for each table
Fix added in CegoDbThread::serveRequest ( GETBLOB and GETCLOB case ) and CegoTableManager::getBlobData / getClobData chunkSize calculation. The existing calculation did not treat every boundary case.
cego 09.04.2018 2.39.14 Version released
cego 09.04.2018 2.39.14 Fix in CegoXPorter::writeRow and CegoXPorter::readRow for binary export and import of tables containing lob null values. lob null values must be identified by colLen unsigned long long = 0 instead of integer = 0
cego 09.04.2018 2.39.14 Fix in CegoXPorter::writeRow and CegoXPorter::readRow for binary export and import of tables containing lob null values. lob null values must be identified by colLen unsigned long long = 0 instead of integer = 0
cego 07.04.2018 2.39.13 Version released
cego 07.04.2018 2.39.13 Fixes in CegoLogManager, CegoRecoveryManager, CegoDistManager and CegoTableManager for LSN handling. Instead of saving the next LSN, now the current written LSN is recorded in CegoLogManager. This seems to be more natural, since a lot of methods set up the LSN to a value + 1. Also this fixes a mismatch between commited lsn and current lsn, which leads to a tableset recovery during startup in any case ( occured with version 2.39.9 )
cego 07.04.2018 2.39.13 Introduced CegoTransactionManager::getCrashAffectedTables method. In case of a crash recovery, all transaction affected tables have to be analysed for index objects. Before finishing transactions, the index objects have to be invalidated ( since they might be corrupted ) and after completion of transactions they have to be recreated. This is done now in CegoTableManager::finishOpenTransaction
lfcbase 06.04.2018 1.11.8 Version released
lfcbase 06.04.2018 1.11.8 Extensions made for Chain::toLower and Chain::toUpper methods. To treat multi character strings, a conversion is made to wide characters using mbstowcs libc function. case conversion now is done with towupper / towlower wide character function. Strings are then converted back to multicharacters using wcstombs function.
This allows upper/lower case conversion now for Umlaute ( öüä ) which have actually not been treated
cego 05.04.2018 2.39.12 Version released
cego 05.04.2018 2.39.12 Patch in CegoClient to catch format exceptions like "Invalid datetime string <0> for format <%d.%m.%Y %H:%M:%S>". This may happen, if on server side bad union selects are defined like
create view v1 as
select a as a, b as b from t1
union all
select a as a, 0 as b from t2;
where b is a datetime data type. In this case, bad formatted strings are occured on client side, which are catched now.
cego 05.04.2018 2.39.12 Patch in CegoDatabaseManager::useObject to support lock delay values > 1 sec. The DBM_LOCKDELAY value in CegoDefs has now increased to 2500 msec. In some cases for heavy updates ( e.g. clob updates ) this might be useful to avoid ugly exclusive lock delay messages in database log file
cego 04.04.2018 2.39.12 Fix in CegoTableManager::updateTuple, if the update fails ( this might happen, if another transaction actually updates the corresponding tuple ), any allocated lob values are freed now. Otherwise the for the lob values are data pages allocated with no more references
cego 31.03.2018 2.39.11 Version released
cego 31.03.2018 2.39.11 Cleanup stuff
cego 31.03.2018 2.39.11 Cleanup stuff
cego 31.03.2018 2.39.10 Version released
cego 31.03.2018 2.39.10 Improvements were made for log handling, the logIt method was moved from CegoTableManager to CegoBufferPool. This allows a more adequate locking of the logging actions. For this the tsLock array has been removed from CegoTableManager and lmLock array has been set up in CegoBufferPool. Since checkpoint writing occurs in CegoBufferPool ( which is also relevant for loging operations ), the logging method is now part of CegoBufferPool.
The logAction method in CegoLogManager has also been improved in a way, that a log buffer is not allocated for each logging operation anymore. Instead, a logBuf array has been defined for all tablesets and the logBuf is reallocated, if the current logging record exceeds the log buffer.
cego 29.03.2018 2.39.9 Version released
cego 29.03.2018 2.39.9 Added fixes for recovery procedure in CegoTableManager. Now the LSN is allocated at the beginning of critical operation to avoid double operations in case of a forced checkpoint. For this the CegoLogManager::nextLSN method has been introduced. Now it is no more ensured that the log is written with increasing LSN, so some logical parts of the recovery procedure in CegoRecoveryManager has been changed.
In CegoBufferPool, the writeCheckPoint method still returned int value. This has been changed to unsigned long long
cegojdbc 23.03.2018 1.7.9 Version released
cegojdbc 22.03.2018 1.7.9 Improvements for clob handling ( put clob to database )
cego 19.03.2018 2.39.8 Version released
lfcbase 18.03.2018 1.11.7 Additional fix to this release : Added regfree call to Matcher destructor. Missing this call seems to cause a small memory leak
cego 18.03.2018 2.39.8 Fix for memory leak in CegoPredDesc, pMatcher has not been cleaned up
lfcbase 18.03.2018 1.11.7 Version released
lfcbase 18.03.2018 1.11.7 Fix for memory leak in TreeT and AVLTreeT. The = operator implementation did not empty the tree before copy.
cego 09.03.2018 2.39.7 Version released
cego 09.03.2018 2.39.7 Fix in CegoRecoveryManager::recoverCurrentTransactionLog for the INSERT case. For the blob/clob handling, the lobREf values have not been set up correctly. This might lead to problems for table recovery with more than one lob row ( e.g. table t1 ( a blob , b clob )
cegojdbc 08.03.2018 1.7.8 Version released
cegojdbc 08.03.2018 1.7.8 Fix in CegoNet.closeSession, disconnect method call was added to close finally the socket descriptor. Otherwise this may lead to socket leaks with the error message "too many open sockets"
cego 08.03.2018 2.39.6 Version released
cego 07.03.2018 2.39.6 Some clob related fixes in CegoQueryHelper::decodeNativeFVL / decodeFVL which relevant for recovery handling
cego 07.03.2018 2.39.6 Fix in CegoTableManager::deleteDataTable, pBlock has to be checked for null value, otherwise crash recovery might crash. ( bug came with 2.39.0 to check for pBlock->getTriggerValueList )
cego 06.03.2018 2.39.5 Version released
cegojdbc 06.03.2018 1.7.7 Version released
cegojdbc 06.03.2018 1.7.7 Fix in CegoNet.getClob, the full msgSize has to put to setBytes method, otherwise large are getting corrupted in case of multiple message chunks
cego 06.03.2018 2.39.5 Bug fix in CegoAction::reallocateStringBuf, in the memcpy call, just the previous stringBufLen has to be copied ( _stringBufLen - MAXSTRINGLEN ). This bug might lead to seg fault in case of large parser input ( e.g. clob strings )
cego 06.03.2018 2.39.5 In CegoQuery for insert and insert-by-select case, allocated blob and clob data ( by CegoQueryHelper::prepareFieldValue ) is cleaned now if any exception occurs
cegojdbc 05.03.2018 1.7.6 Version released
cegojdbc 05.03.2018 1.7.6 Fix in CegoClob method setBytes, The copy operation was not correctly done
cego 05.03.2018 2.39.4 Version released
cego 05.03.2018 2.39.4 Small bug fix in CegoDistManager, which came up with version 2.39.0. In method deleteLocalDataTable, the variable delCount was declared two times, which lead to a result of 0 tuples deleted in any case
cego 03.03.2018 2.39.3 Version released
cego 02.03.2018 2.39.3 Small improvement in CegoDbThreadPool. For a better db thread load value calculation, the request queue is no more locked while no incoming requests. Instead the QUEUEDELAY parameter has been increased to a default value of 200 msec to reduce db thread cpu load while idle. Now the db thread have a good chance to report idle time to the db thread pool
cego 02.03.2018 2.39.3 Some boring code cleanup done
cego 02.03.2018 2.39.3 In CegoQuery::execute, changed order for setBlock and setFieldListArray for INSERT_QUERY case
cegobridge 01.03.2018 1.4.0 Version released
cegobridge 01.03.2018 1.4.0 Adaptions for cego-2.39
cego 01.03.2018 2.39.2 Version released
cego 01.03.2018 2.39.2 Fix in CegoTableManager::updateTuple, while setting up expression list, field list array must be setup BEFORE block ist set, since field list is needed by block setup ( in case of subqueries for prepare )
cegojdbc 01.03.2018 1.7.5 Version released
cegojdbc 28.02.2018 1.7.5 Added implementation for several clob relevant methods and like ResultSet.getClob, Clob.getCharacterStream and others
cego 27.02.2018 2.39.1 Version released
cego 27.02.2018 2.39.1 Fix in CegoQueryHelper::encodeFVL, for blob/clob values lists, the corresponding index variables ( blobidx/clobidx ) have not been increaed while encoding lob data. This might lead to invalid results and seg faults in case of multiple lobs values in one insert/update operation.
cego 26.02.2018 2.39.0 Version released
cegojdbc 26.02.2018 1.7.4 Version released
cegojdbc 26.02.2018 1.7.4 Consolidation of methodes CegoNet::connect and CegoNet::requestSession. This is just an small optimization for connection establishment
cego 25.02.2018 2.39.0 Trigger implementation basically completed
cego 24.02.2018 2.39.0 Trigger feature basically works for on insert. Some expansions for triggerValueList handling have to be done in CegoProcBlock class. This is for refering to ( insert ) values from the triggering statement
cego 24.02.2018 2.39.0 Initial trigger implementation done, classes CegoTrigger and CegoTriggerObject added and integrated, Parser expansion for corresponding trigger commands done. Code compiles
cego 23.02.2018 2.39.0 Started with trigger implementation
cego 23.02.2018 2.39.0 Introduced table locking statements to set an explicit lock on a table ( e.g. for update synchronisation ). This feature replaces the "set update sync on/off" command
cego 22.02.2018 2.38.20 Version released
cego 22.02.2018 2.38.20 For heavy update operations on tables with btrees used embedding transactions, duplicate btree errors may occur. This is caused by not checking corresponding tuple states. To solve this problem, the following fixes have been done : - Fix in CegoTableManager::checkBTreeIntegrity : The tuple state for found entries has to be checked if state = COMMITTED - Fix in CegoBTreeNode:checkForAffected ( was checkForDeleted before ) : The tuple state has already checked for state INSERTED if, tid != dataTid
cegojdbc 21.02.2018 1.7.3 Version released
cegojdbc 21.02.2018 1.7.3 Improvements made regarding network IO handling. Instead of using PrintStream for socket output, now native ByteStream is used. It has been observed, that PrintStream seems to have some overhead and slows down network communication significantly. Many parallel threads writing sockets in parallel may lead to an hanging IO ( observed on SUSE Linux ) Furthermore, the P() and V() semmaphore methods in CegoNet have been removed. Instead, for the critical regions, synchronized methods are used now. At all, this patch lead to a much better driver performance, especially for linux based systems
cego 10.02.2018 2.38.19 Version released
cego 10.02.2018 2.38.19 Fix in dbcheck/check065.sql for union sql in view.There must be set up aliases for attributes in selection now
cego 02.02.2018 2.38.18 Version released
cegojdbc 02.02.2018 1.7.2 Version released
cegojdbc 02.02.2018 1.7.2 Switched to sl4j API
cego 30.01.2018 2.38.18 Fix in CegoSelect::prepare, expression alias in select list are checked now for union selects. Alias definition in select expression list should be identical for all select statements in union
cego 28.01.2018 2.38.17 Version released
cego 28.01.2018 2.38.17 Fix in CegoTableManager::createForeignKey, for empty tables, referenced attributes names have not been checked. This might lead to invalid key objects.
lfcbase 18.01.2018 1.11.6 Version released
lfcbase 18.01.2018 1.11.6 Code cleanup class Net and NetHandler ( eg. changed from bind to ::bind since fpr FreeBSD 12, compile problems occured without namespace definition
cego 30.12.2017 2.38.16 Version released
cego 29.12.2017 2.38.16 Optimization for procedure load in CegoFunction::evalFieldValue ( case USERDEFINED ), procedure is just loaded as a dedicated instance ( via loadProcedure method ), if pMasterBlock is set. This avoids ( expensive ) dedicated load, if the procedure is still not in use by the corresponding thread. So just for recursive procedure calls, the dedicated load happens.
cego 26.12.2017 2.38.16 Added dbcheck/check072.sql. This implements the calculation of fibonacci numbers using stored procedures as a demonstration for massive recursive procedure calls
cego 22.12.2017 2.38.15 Version released
cego 21.12.2017 2.38.15 Introduced QUEUEDELAY ( in usec ) config parameter to adjust queue delay in database xml file. This allows to throttle down database response time for incoming connection requests and minimize CPU load
cego 21.12.2017 2.38.15 Increased NETMNG_QUEUE_DELAY to 1000000 ( 1 ms ) to minimize CPU load
cego 20.12.2017 2.38.14 Version released
lfcbase 20.12.2017 1.11.5 Version released
cego 20.12.2017 2.38.14 Fix in CegoAttrCond::getIndexCond, like and no like comparisons must be filtered out for new btree cursor tracing logic
lfcbase 20.12.2017 1.11.5 Stability patch for strptime implementation ( MinGW only )
cego 19.12.2017 2.38.14 Further optimization done in CegoBTreeCursor, introduced methods traceLow and inRange to treat btree comparison in a more efficient way
cego 18.12.2017 2.38.13 Fixed memory lead in CegoDistManager destructor ( _pPA was not deleted )
cego 15.12.2017 2.38.12 Since I had some paranoia regarding btree index cursor evaluation, I made some additional tests with bigger tables, multi-dim btrees and sophisticaed queries. All result sets are identical with the results by retrieving the data without btree ( full table scan ). So all looks good with this patch :)
cego 14.12.2017 2.38.12 Version released
cego 14.12.2017 2.38.12 Optimization in CegoBTreeCursor::getNext. Instead of calling getNext in a recursive way, this is now done in a iterative way. This might avoid heavy stacking in case of special query constraints ( e..g multi dimensional btrees and range conditions like a > 400 and b betweeen 'AAA' and 'DDD' )
cego 12.12.2017 2.38.11 Version released
cego 12.12.2017 2.38.11 More rework for btree evaluation in CegoBTreeCursor
cego 12.12.2017 2.38.11 Small optimization in CegoAttrCond::checkIndex, removed primary flag, since this is done now by attribute ordering. This leads to full index trace match instead of trace with index support and so, additional unnecessary predicate evaluation is avoided.
cego 10.12.2017 2.38.10 Version released
lfcbase 10.12.2017 1.11.4 Version released
cego 10.12.2017 2.38.10 Changed in CegoAttrCond compSet from SetT to TreeT. This is required, since we need the ordering in the set.
lfcbase 10.12.2017 1.11.4 Fixes in TreeT class, changed methods First, Next, isEmpty and compare operators to const
cego 10.12.2017 2.38.10 Fix in CegoBTreeCursor, CegoAttrCond and CegoAttrComp, for conflicting cursor conditions ( e.g. a = 4 and a < 1 ), the cursor evaluation failed, since just the primary condition was treated.
For CegoBTreeCursor, the method fullMatch has been introduced, to make an final evalution in case of multi conditions.
There was also introduced a ordering for CegoAttrComp set in CegoAttrCond to treat more constraint conditions at the beginning ( EQUAL before LESS_THAN before NOT_EQUAL and so on )
cego 09.12.2017 2.38.10 Fix in CegoDistManager, we have to use a dedicated parser for loadView and loadProc methods. Otherwise compilation may fail in case of nested objects ( e.g. a view which references another view object)
cego 09.12.2017 2.38.9 Version released
cego 08.12.2017 2.38.9 Modification in CegoFunction::evalFieldValue. To allow recursive calls of user defined functions and procedures, dedicated procedure instances are created for each call. This is done by parsing the procedure text via CegoAction
cego 07.12.2017 2.38.8 Version released
cego 07.12.2017 2.38.8 Version released
cego 07.12.2017 2.38.8 Introduction of new functions ascii ( get ascii character for numeric value ) , ldiv and lmod ( div and mod operation for long values )
cego 02.12.2017 2.38.7 Version released
lfcbase 02.12.2017 1.11.3 Version released
lfcbase 01.12.2017 1.11.3 Improvements made for dedicated strptime implementation ( pretty old stuff, found this several years ago anywhere in the net ) The function did not return null in case of unparsable date values. This code is just used for MinGW compiles since there is no implementation in the Standard C library available.
cego 01.12.2017 2.38.7 Fix in CegoXPorter::readTableObject, the defintion for MAXROW BUF still was defined locally and rowLen was noch checked.
Optimization in CegoFieldValue::decode, memory was allocated via malloc, rather _staticBuf should be used for performance reasons. _isLocalCopy was not set to true
cego 29.11.2017 2.38.6 Version released
lfcbase 29.11.2017 1.11.2 Version released
cego 29.11.2017 2.38.6 Fix in CegoFunction::getId and CegoSelect::getQueryId : with enabled query cache, the following select is cached
  select nextcount(mycount);
Since nextcount is a modifying operation, this is not a good idea. To avoid caching, CegoFunction now throws an Exception if nexcount / setcount function calls are detected during getQueryId. For these cases, the query id ignored for caching
lfcbase 26.11.2017 1.11.2 More detailed exception messages for BigDecimal and BigInteger
cego 25.11.2017 2.38.5 Version released
cego 25.11.2017 2.38.5 Fix in CegoBTreeValue::valueFromSchema, introducded method getReservedLength to return fixed value length for type fixed and decimal. Since for decimal and fixed type just the dimension is stored in CegoField::getLength, we must define a reserved area for those types. This is done now with constant definition RESERVED_BTREE_FLOATLEN in CegoDefs.h
cego 25.11.2017 2.38.4 Version released
cego 23.11.2017 2.38.4 Improved ordersize calculation in CegoOrderSpace:insertTuple. Now the following formula is used :
int s = sizeof(fv);
if ( fv.getLength() > STATICFIELDBUF )
   s += fv.getLength();
orderEntryLen += s; 
The catches the base memory usage for the instance but also the dynamic allocated part
cego 22.11.2017 2.38.3 Performance optimization done in CegoOrderSpace. Instead of storing the CegoField list for the result tuple in CegoOrderNode, just the values are stored there. The order cursor now gets the schema with the constructor and build the CegoField List in the getFirst / getNext methods. This seems a huge amount of heap space, which is dynamically allocated during the sorting procedure ( sortareasize parameter ).
Especially for large ordering result sets this saves significantly memory and improves performance.
cego 21.11.2017 2.38.2 Version released
cego 21.11.2017 2.38.2 Fix in CegoXMLSpace::setTSSortAreaSize, changed type from int to unsigned long long, otherwise overflow may occur for large sort area size configurations
cego 19.11.2017 2.38.1 Version released
cego 18.11.2017 2.38.1 Fix in CegoPredDesc::decode, loop variable i for IN/NOTIN case was not initialized
Fix in CegoAction::execCheckCreate, check contraints are checked for contained subselects. subselects are ( still ) not supported since the CegoCheckOject::decode method can not provide a valid tablemanager instance ( it is called from CegoObjectManager )
cegobridge 16.11.2017 1.3.0 Version released
cego 16.11.2017 2.38.0 Version released
cegobridge 15.11.2017 1.3.0 Adaptions made for modified cego-2.38.0 API with extended CegoDatabaseFormatter::formatPred method ( exprList was added for new introduced select in ( expr list ) predicate )
cego 15.11.2017 2.38.0 Introduced predicate clause for select .. in ( expr, expr, ... ),
e.g. select * from t1 where a in ( 1, 2, 3 ); This was still not implemented but is part of standard SQL
cego 15.11.2017 2.37.4 Fix in CegoSelect::clone, pUnionSelect was not cloned, which might lead to seg faults
cego 15.11.2017 2.37.3 Version released
cego 15.11.2017 2.37.3 Adaption in CegoMain to also parse comment lines in a more sophisticated way ( same as in CegoMain ), just relevant for server batch mode
cego 14.11.2017 2.37.3 Optimization in CegoDistCuror::joinSetup, the join predicate is now analysed in a way, that a condition list is created ( via makeCNF and createCondition methods in CegoQueryHelper ). The condition list then is analysed to achieve a better cursor condition which results in improved index usage
cego 14.11.2017 2.37.2 Version released
cego 13.11.2017 2.37.2 Fix in CegoClient, the new comment logic by using Tokenizer does not work ( '-' characters are detected as comment tokens ). Code replaced by using posStr chain function
dragon 10.11.2017 1.4.3 Version released
dragon 10.11.2017 1.4.3 Changed generated Java code to abstract class with abstract methods, which have been implemented by the parser action subclass. This seems to be a cleaner modeling
cegojdbc 10.11.2017 1.7.1 Version released
cegojdbc 10.11.2017 1.7.1 Support added for jdom2 and simple log4j
cegobridge 10.11.2017 1.2.1 Version released
cegobridge 10.11.2017 1.2.1 New generated configure script with libtool-2.4.6
dragon 10.11.2017 1.4.2 Version released
dragon 10.11.2017 1.4.2 New generated configure script with libtool-2.4.6
cego 10.11.2017 2.37.1 Version released
cego 10.11.2017 2.37.1 New generated configure script with libtool-2.4.6
lfcxml 10.11.2017 1.2.6 Version released
lfcxml 10.11.2017 1.2.6 New generated configure script with libtool-2.4.6
lfcbase 10.11.2017 1.11.1 Version released
lfcbase 10.11.2017 1.11.1 New generated configure script with libtool-2.4.6
cegojdbc 08.11.2017 1.7.1 Upgrade of 3rd party jars ( JDOM-2.0.6 and log4j ( switch to slf4j ))
cegobridge 07.11.2017 1.2.0 Version released
cegodbd 07.11.2017 1.4.0 Version released
cego 07.11.2017 2.37.0 Version released
lfcbase 07.11.2017 1.11.0 Version released
cego 07.11.2017 2.37.0 Added show parameter admin command to show all tableset independent database parameters
lfcbase 05.11.2017 1.11.0 Layout improvements in Pager class
cegobridge 05.11.2017 1.2.0 Support added for lfcbase-1.11.0
cegodbd 05.11.2017 1.4.0 Adaptions for support of lfcbase-1.11.0
cego 04.11.2017 2.37.0 Support for lfcbase-1.11.x with new Net API. The parameter maxSendLen ist still a constant in CegoDefs.h
Improvements added for CegoXMLSpace::setPerm, for existing permissions, just tableset, filter or right can be set up now,
e.g set permission p1 with right=WRITE for role1 just sets the right value for permission p1 to value WRITE, all other values are unchanged
lfcbase 04.11.2017 1.11.0 Changed constructor for Net and NetHandler class to setup maxSendLen. Since this changes the API, minor release level has been increased
cego 04.11.2017 2.36.6 Version released
cegobridge 04.11.2017 1.1.7 Version released
cego 04.11.2017 2.36.6 Improvements for cgclt, added pipe mode to read input from stdin
Now comments are allowed also after delimiter token, e.g.
create table t1(a int); -- a sample table
cegobridge 03.11.2017 1.1.7 Added index creation statement for MySQL datatype.
Treated are primary, unique and non-unique index objects
cego 03.11.2017 2.36.6 Error message correction in CegoSelect
cego 03.11.2017 2.36.5 Version released
cego 03.11.2017 2.36.5 Improvements for cgblow simulation mode added
cego 03.11.2017 1.10.3 Version released
lfcbase 02.11.2017 1.10.3 Value change of NetHandler::SENDLEN from 1024 to 8192 On FreeBSD based systems, the lower value lead to a poor network performance for large mesages, since subsequent send calls seem to slow down the network throughput. On OSX and Windows/MinGW64 based systems, this effect has not been observed but a sendlen of 8192 seems to be no problem also for these systems
cegobridge 01.11.2017 1.1.6 Version released
cego 01.11.2017 2.36.4 Version released
lfcbase 01.11.2017 1.10.2 Version released
cego 01.11.2017 2.36.4 Fix in CegoSelect::nextTuple, before adding an entry to the query cache, it has to be checked, if any tables from foreign tableset are referenced in the query. If so, no cache entry is made, since table changes for foreign tables are not detected.
cego 01.11.2017 2.36.4 Improved error messages for invalid database objects
cego 01.11.2017 2.36.4 Decreased shutdown delay time by reducing net delays for all thread pools and optimized mediator thread wait procedure
cego 01.11.2017 2.36.4 Completely removed the nologging option for import actions. Logging is disabled in any case now
cego 01.11.2017 2.36.4 Optimization added for log handling. During ( xml ) import, logging is completely deactivated, after import is completed, log is started again and a checkpoint is written.
Since import can be repeated in case of a system during import, nothing gets lost. Deactivating logging increases import speed and avoids side effects
cego 31.10.2017 2.36.3 Version released
cego 31.10.2017 2.36.3 Changed recovery strategy for existing btree / avl index objects. Before creating an index object, it is checked if exists. If exists, it is dropped and recreated. This seems to be a more stable strategy, since it may occur, that index objects still exist for several reasons.
cego 31.10.2017 2.36.3 Fix in CegoTableManager::createBTree : we must create log entry BEFORE creating the index content, since during index build, checkpoints may occur.
The checkpoint writes the btree object already to database and if db crashes after checkpoint, the index already exists.
This causes then "btree already exists" error during recovery
cego 31.10.2017 2.36.3 Added dbcheck/check063 to verify FLA cache handling
cego 30.10.2017 2.36.2 Version released
cego 30.10.2017 2.36.2 Fix in CegoFactor::setFieldListArray, the _flaCached variable has to be set to false, if _pFLA is set to a different value. Otherwise, we might refer to invalid memory, which results in core dump
lfcbase 30.10.2017 1.10.1 Version released
cegobridge 30.10.2017 1.1.5 Version released
lfcbase 29.10.2017 1.10.1 Added File class constructor to support STDIN read mode
cego 03.10.2017 2.36.1 Version released
cego 02.10.2017 2.36.1 Added signal handler to CegoAdmAction. Now, ( long ) running tableset export and import requests can be aborted in a controlled way via Ctrl-C command.
cego 30.09.2017 2.36.1 Fix in CegoXPorter, export file will be removed, if any exception occurs. So it is ensured, that the written export file is consistent and complete
cego 30.09.2017 2.36.1 Small fixes in CegoXPorter for CLOB handling ( was not checked for plain exports )
cego 29.09.2017 2.36.0 Version released
cego 29.09.2017 2.36.0 Adding missing export / import messages to CegoXPorter
cego 27.09.2017 2.36.0 Changed btree cache enabling syntax. Instead of a dedicated switch command ( set btree cache on / off ), the cache option now is directly given with the create btree command ( e.g. create btree b1 on t1(a) cached )
cego 27.09.2017 2.35.12 Version released
cego 27.09.2017 2.35.12 Improvement in CegoBufferPool::calcSegment for segid calculation. It has been recognized, that with the current calculation ( pageid % numsegment ) not all slots can be reached for special buffer pool configurations.
The formula has been changed ( to ( pageid / numpages ) % numsegment )
cego 26.09.2017 2.35.12 Fix in CegoTableManager::createBTree, pC object cursor has to be set to 0, otherwise in case of abortion a seg fault occurs
Changed default value for btree cache enabling to false
cego 24.09.2017 2.35.11 Version released
cego 24.09.2017 2.35.11 Completed pointer cleanup in CegoQueryHelper::evalPredicate, added check061 to check pointer cleanup
cego 17.09.2017 2.35.10 Version released
cego 17.09.2017 2.35.10 Fix in CegoQueryHelper::evalPredicate, for all predicate types, the field array value has to be reset to 0, otherwise seg fault my occur since invalid references might be used
cego 17.09.2017 2.35.9 Version released
cego 17.09.2017 2.35.9 Fix in CegoBufferpool::writeCheckpoint, in case of an locking exception ( lockBufferPool ), the pool must be released in any case. For this the CegoLockManager::lockBufferPool and CegoLockManager::unlockBufferPool have been modified in a way, that lockBufferPool saves the current sema index ( _poolRangeLock ) which is later used for the unlocking call.
cego 16.09.2017 2.35.9 Timeout parameter for bufferpool lock reduced to 60 seconds.
Optimization in CegoBufferPool:bufferfix for minHashId calculation in step 2, there was an unneeded locking operation for the minhashId, which was already locked by the mail loop
cego 12.09.2017 2.35.9 Small format fix in CegoProcCreateStmt ( missing indent )
Add header row out put for client raw mode ( attribute names )
cego 09.09.2017 2.35.8 Version released
cego 09.09.2017 2.35.8 Bug fix in CegoDistCursor::getTuple, for the LEFTOUTER case and moreRight conditions, the right table cursor was called double time ( native and with nextRight ). The native call has to be removed since this may lead to strange effects actually just observed for mingw compiles
cego 09.09.2017 2.35.8 Long type correction in CegoGroupEntry ( just relevant for MINGW compiles )
cego 08.09.2017 2.35.7 Version released
cego 08.09.2017 2.35.7 Change in several files from type long to type long long. This seems to be irrelevant on native Linux/OSX/FreeBSD compiles but has impact for mingw compiles, since sizeof(long) != sizeof(long long)
cego 06.09.2017 2.35.6 Version released
cego 06.09.2017 2.35.6 Fix in CegoPredDesc for INSUB and NOTINSUB constructor + clone method. There was a confusing with the isNegated flag which has been corrected ( also in using class CegoAction ) The wrong negation might lead to wrong query result for views using subselect with in or not in subselects
cego 05.09.2017 2.35.5 Version released
cego 05.09.2017 2.35.5 Fix in CegoQueryHelper::aggregateTuple, in case of min-Aggregation, wrong results may occur, if null values have to be treated. Since null value handling is now treated inside CegoFieldValue, some code here was obsolete.
cego 03.09.2017 2.35.4 Version released
cego 02.09.2017 2.35.4 Added tuple information command tupleinfo to indicate tuple state information for a given table ( COMMITTED, INSERTED, DELETED, OBSOLETE )
Fix in CegoTransactionManager::commitTransaction and CegoTransactionManager::rollbackTransaction, in case of a crash recovery the taList does not contain any transaction entries, but the rollback segments have to be checked in any case for entries to process. Otherwise, the transaction will not be completed
cego 02.09.2017 2.35.3 Version released
lfcxml 02.09.2017 1.2.5 Version released
lfcxml 02.09.2017 1.2.5 Small improvement in XMLSuite::nextChar to check for non-ASCII characters
cego 02.09.2017 2.35.3 Fix in CegoTableManager::finishOpenTransaction, the transaction id for the corresponding tableset must be set to zero, otherwise in case of crash recovery procedures a transaction id might be active and the open transactions are not completed correctly
cego 25.08.2017 2.35.2 Version released
cego 25.08.2017 2.35.2 Fix for a bad patch in 2.35.1, In CegoSelect::clone also the pCache variable has to be copied ( we previously done by calling setTabSetId )
cego 24.08.2017 2.35.1 Version released
cego 24.08.2017 2.35.1 Fix in CegoSelect::setProcBlock, pBlock was not setup for _pPred
This might result in wrong query results within stored procedures with select statements which refer to procedure variables
Changed index recovery handling in a way, that index and btree objects are rebuild immediately instead of invalidating them. This leads to a much better recovery performance in case of expensive queries where index use is needed for fast evaluation
cego 22.08.2017 2.35.0 Version released
cego 22.08.2017 2.35.0 Introduced simple selects, e.g. select 1, select sysdate, etc for select queries without any object access
This might be useful for example for database connection validation queries
cego 20.08.2017 2.34.3 Version released
cego 20.08.2017 2.34.3 The previous problem regarding query cache is a result of the new introduced select cloning. The extended query id string should solve the problem
cego 20.08.2017 2.34.3 Fix in CegoSelect::getId, the values of the parent join buffer have also be added to the query id string, otherwise, nested queries which references attributes to parent join buffer can not be distinguished
cego 19.08.2017 2.34.2 Version released
cego 19.08.2017 2.34.2 Fix in CegoDistCursor to support multiple view references in a query ( e.g. select a from v1 where exists select * from v1 ... ) In the past, this might lead to infinite loops, since just the view select reference was used. Now the reference is cloned.
The usage of clones results in several fixes for the CegoSelect::clone and underlying clone methods
cego 17.08.2017 2.34.1 Version released
cego 16.08.2017 2.34.1 Fix in CegoDistManager::checkKey ( used for verify tableset admin commend ). Check for foreign key has been redesigned
cego 15.08.2017 2.34.1 Fix in CegoBTreeCursor::getFirst, _pAttrCond has to be checked for 0, otherwise a core dump may occur ( detected with verify tableset admin command )
In CegoViewObject::toChain() the view object reference string has to return complete information including the tableset. Otherwise, references to foreign tableset objects with the vie will not work correctly.
cego 12.08.2017 2.34.0 Version released
lfcbase 12.08.2017 1.10.0 Version released
cego 12.08.2017 2.34.0 Introduced new date function newdate with optional numeric input. If used with year and month input, this can double the speed for date construction ( no string parsing required )
cego 11.08.2017 2.34.0 - Use of new introduced lfcbase datetime constructor to create datetime values with numeric input ( year, month, day, hour, minute and second ) for more efficient value handling
- Fix in CegoTypeConverter::getTypeLen for LONG_TYPE values, it should be size of(long long) instead of sizeof(long). This impacts MINGW compiles, since sizeof(long) ist just 4 bytes
- Changed CegoTypeConverter methods to static
lfcbase 11.08.2017 1.10.0 Added Datetime advanced constructor for more efficient datetime construction
cego 06.08.2017 2.33.23 Version released
lfcbase 06.08.2017 1.9.8 Version released
cego 06.08.2017 2.33.23 Small fix in CegoAttrCond::operator = , compare Find result with 0 instead of false. A compile error occured for MINGW compiles
lfcbase 06.08.2017 1.9.8 Adoptions made in CommandExecuter and Outstream for MINGW builds
cego 04.08.2017 2.33.22 Version released
cego 02.08.2017 2.33.22 More fixes in CegoTableManager::keyReferenceExists and CegoTableManager::createForeignKey, there still were missing some adpotions for TableCursor::setup return code and other case handling
cego 29.07.2017 2.33.21 Version released
cego 29.07.2017 2.33.21 Added further constraint check in CegoTableManager::dropObjectSynced. Primary objects just allowed to be removed, if no foreign key reference exists
cego 28.07.2017 2.33.21 More fixes on foreign key contraint handling in CegoTableManager::checkKeyIntegrity and CegoTableManager::insertDataTable methods
cego 27.07.2017 2.33.21 Fix in CegoTableManager::checkKeyIntegrity. The implementation of the mehod has been completly reworked, since not all violation cases have been treated.
cego 22.07.2017 2.33.20 Version released
cego 22.07.2017 2.33.20 Fix in CegoDistCursor to support advanced left and right outer join queries of the form
select tx.a as xa, ty.a as ya from t1 tx left outer join t2 ty on tx.a = ty.a + 1;
For this, the evaluation of the predicate has to be done in a different way to get complete row set
cego 16.07.2017 2.33.19 Version released
cego 16.07.2017 2.33.19 Fix in CegoOrderSpace::insertTuple, for the localTuple variable, also a dedicated copy has to be allocated, otherwise it may happen that invalid tuple references ( caused be page relocation ) lead to invalid order results
cego 16.07.2017 2.33.19 Added performance optimization to CegoTableManager::updateTuple. The already evaluated index, key and checklist are also provided to checkIntegrity method now ( instead of retrieving the lists again ). The improves performance for updates with many tuples significantly
cego 13.07.2017 2.33.18 Version released
cego 11.07.2017 2.33.18 Added tablemanager parameter to CegoProcWhileStmt to catch query abort. In case of infinite while loops, this enables the db admin to abort procedure execution
Optimization for CegoFunction::SETCOUNT procedure implementation added. Now this is an atomic operation ( ( instead of calling getCounterValue previously ).
For this, also the CegoXMLSpace::setCounterValue method has been changed to return the current counter value return the current counter value
cego 02.07.2017 2.33.17 Version released
cego 29.06.2017 2.33.17 Method cleanup in CegoSelect.cc, also some irrelevant case is treated for grouping clauses in combination with distinct operator
lfcbase 27.06.2017 1.9.7 Version released
lfcbase 27.06.2017 1.9.7 Removed include socketvar.h in Net.cc and NetHandler.cc since compile error occured for FreeBSD 12
cego 24.06.2017 2.33.16 Version released
cego 24.06.2017 2.33.16 Fix in CegoAction::execute, missing break added after calling execListView
cego 23.06.2017 2.33.16 Fix in CegoQueryHelper::evalPredicate. In case of subselects, the parent join buf also has to reset after performing the subselect, otherwise invalid pointer references are still active for the next caller
Seg faults have been experienced for delete with double nested subselect conditions ( see check055 )
cego 21.06.2017 2.33.15 Version released
cego 21.06.2017 2.33.15 Completion for admin help backup section, some commands were still missing
Improvements for procedure indent formatting. All sugar, nothing functional
cego 03.06.2017 2.33.14 Version released
cego 03.06.2017 2.33.14 Fix for distinct handling in CegoAggreation
Fix for alias handling regarding view creates. Alias definitions are mandatory now for aggregated attribute definitions, e.g.
create view v1 as select count(*) from t1;
=> returns now
ERROR: Missing alias reference for view create
and must be written as
create view v1 as select count(*) as c from t1;
cego 30.05.2017 2.33.13 Version released
cego 29.05.2017 2.33.13 Design modification in CegoAction for semantic action ( execXXX methods )
An analysed statement is now just executed after complete succesful parsing of the given input. This avoid protocol effects for queries like "select * from t1;;" where the query is executed but the second semicolon is detected as an parse error which also is sent to the client.
For this the new method CegoAction::execute has introduced which is ( explicitly ) called after successful CegoAction::parse
cego 27.05.2017 2.33.12 Version released
cego 27.05.2017 2.33.12 Fix in CegoAttrComp::reset, case VALUE2VALUE still was not treated, which lead to wron index handling for between clauses with native values
cego 25.05.2017 2.33.11 Version released
cego 24.05.2017 2.33.11 Fix in CegoQueryHelper::evalAttrCond, comparison modulation was missing for one case whihc leads to wrong query results for comparisons like 3 < a ( constant left )
Optimization added for between clause, indexes were just used for constant values in between clause ( eg. a between 10 and 20 ) This has been expanded, that also indexes are used, if attribute references are contained ( eg. a between t2.x and t3.y )
cego 14.05.2017 2.33.10 Version released
cego 12.05.2017 2.33.10 basecheck54 added for the previous described problem
cego 12.05.2017 2.33.10 Fix in CegoAttrComp::operator== The values should NOT be compares, since they are set up by the calling CegoAttrCond::update method Otherwise, the error "Cannot set up diff for attribute condition" occurs The following sample produces the error
drop if exists table t1;
create table t1 ( a int, b string(30));

drop if exists table t2;
create table t2 ( a int, b string(30));
create btree b2 on t2(a);

insert into t1 values ( 1, 'XXX');
insert into t1 values ( 2, 'YYY');
insert into t1 values ( 3, 'YYY');
insert into t1 values ( 4, 'YYY');

insert into t2 values ( 1, 'XXX');
insert into t2 values ( 2, 'YYY');
insert into t2 values ( 3, 'XXX');
insert into t2 values ( 4, 'YYY');

drop if exists procedure tproc;
create procedure tproc ( x in int )
   delete from t1 where b in ( select b from t2 where a = :x );

call tproc(2);
call tproc(3);
cego 10.05.2017 2.33.10 Added space character in CegoSelect::toChain after distinct keyword to avoid the following
ma > create view tview as select distinct hostname, pfcontact from ma_sysview where sysrole = 'production'; 
View tview created 
ok ( 0.001 s ) 
ma > select * from tview; 
Error : Unknown attribute field  
Query failed 
cego 09.05.2017 2.33.10 Fix in CegoObjectManager::createBTreeObject to avoid the following duplicate btree entry
drop if exists table t1;
create table t1 ( a int, b string(30));

create btree b1 on t1 ( a ); 
create unique btree b1 on t1 ( b );  -- this should result in an error

drop btree b1; 
drop btree b1;  -- at least both btrees could be dropped

For objectExists method, the value CegoObject::BTREE must be specifiy to detect the duplicates
cegobridge 07.05.2017 1.1.4 Version released
cego 23.04.2017 2.33.9 Version released
cego 23.04.2017 2.33.9 in CegoTableManager::getClobData added termination character to ensure clob values are terminated with 0 character
cego 23.04.2017 2.33.9 Small fixes for fixed value handling
Small fixes for quote escape handling in cgclt batch mode
cego 23.04.2017 2.33.9 In CegoAction::selectionList1 added alias check for non unique alias defintions
Stored Procedure formatting improvements regarding indent handling
cego 22.04.2017 2.33.8 Version released
cego 22.04.2017 2.33.8 Fix in CegoSelect::buildJoinConditions, the _attrPred array has to be set up. Otherwise it may occur, that the predicate is not evaluated, if it could not been evaluated by the table curser condition.
Furthermore, a setup method has been introduced for CegoAttrCond to evalute joinBuf and parentJoinBuf ( if both references occur in a condition this is needed )
cego 20.04.2017 2.33.7 Version released
cego 20.04.2017 2.33.7 Optimization in CegoCheckpoint::checkpointReached, if interval was reduced, we set up setup the new interval
cego 19.04.2017 2.33.7 Fix in CegoTableManager::removeAllComp, first we have to remove from the list, the we can free the memory. On Linux system with g++, the previous sequence might lead to memory faults
Fix in CegoRecoveryManager::recoverTableSet, after regDataFiles, als registerObjects method must be called, otherwise recovery could fail in case of table view recoveries
Optimization in CegoDistManager::stopDistTableSet, the new introduced method CegoDatabaseManager::removeAllObjects is called, the ensure object cache cleaning
cego 16.04.2017 2.33.7 Added prompt command line option to cgadm to set up specific prompt value
Adding formating improvements to CegoAdminHandler for show logmng and show backupmng commands
lfcbase 14.04.2017 1.9.6 Version released
lfcbase 14.04.2017 1.9.6 Small correction in OutStream, include required by FreeBSD ( fro definition of WEXISTATUS )
cego 13.04.2017 2.33.6 Version released
lfcbase 13.04.2017 1.9.5 Version released
cego 10.04.2017 2.33.6 Small improvements for utility scripts cgmkdb, logManager and backupManager
lfcbase 10.04.2017 1.9.5 Added method getErrorCode to OutStream class
lfcbase 09.04.2017 1.9.4 Version released
lfcbase 09.04.2017 1.9.4 Adaptions in OutStream and CommandExecuter classes for MINGW
lfcbase 08.04.2017 1.9.4 Cleanup of OutStream implementation ( removed some includes, removed ifdef for MINGW
cego 07.04.2017 2.33.5 Version released
cego 06.04.2017 2.33.5 Check052 has been introduced to verify the previous described behaviour
cego 06.04.2017 2.33.5 Fix in CegoSelect and friends for query cleanup. The cleanUp method did not cleanup all field value references which might lead to invalid memory access in case of repeated view calls ( Variable pParentJoinBuf ).
Corresponding cleanUp method have been introduced or CegoExpr, CegoTerm, CegoFactor and friends.
cego 02.04.2017 2.33.4 Version released
cego 02.04.2017 2.33.4 Fix in CegoTableManager::insertDataTable, the newRBEntry method call for the transactions manager also must be catched by the exception. Otherwise, the index might be corrupted if any exception occur ( e.g. out of temp space )
cego 01.04.2017 2.33.3 Version released
lfcbase 01.04.2017 1.9.3 Version released
lfcbase 01.04.2017 1.9.3 Small fixes for Monitor and Pager class, adding missing ifdef for curses option in Pager class, replaced CGNOCURSES with LFCNOCURSES
cego 30.03.2017 2.33.3 Fix in CegoRecoveryManager::recoverTableSet, before calling transactionRecovery, we have to set flag setIgnoreInvalid to true. During transaction recovery phase, we must ignore invalid btrees/index objects since these objects could be invalidated but Log data integrity and consistency is ensured
cego 29.03.2017 2.33.2 Version released
cego 29.03.2017 2.33.2 Added implizit tableset btree and index correction to recovery procedure ( CegoRecoveryManager::recoverTableSet )
cego 28.03.2017 2.33.2 Small syntax for cgadm from "backup TS" to "backup tableset TS" ( conform to other tableset commands )
Fix in CegoTableManager::deleteDataTableEntryAtomic / updateDataTableSynced / beginTransaction / commitTransaction / rollbackTransaction to avoid log entries for forced transactions ( introduction of doLog flag ).
Fix in CegoTableManager:deleteDataTable to avoid object synchronisation during recovery phase ( introduction is isSynced flag ), since during recovery phase, still no objects are registered and there is no need for synchronization
cego 27.03.2017 2.33.2 Added further admin console messages for recovery procedure. This enables the database admin to follow the recovery procedure on admin console level
cego 26.03.2017 2.33.1 Version released
cego 26.03.2017 2.33.1 Some cosmetic changes for backup manager handlng ( change from archmng to backupmng naming )
cego 24.03.2017 2.33.0 Version released
lfcbase 24.03.2017 1.9.2 Version released
cego 24.03.2017 2.33.0 Uplift to version 2.33.0 since the backup feature changes the product specification.
Integration of new introduced lfcbase OutStream class to catch output from backup manager. This allows to indicate a more detailed output from backup manager on admin console.
lfcbase 24.03.2017 1.9.2 Added class OutStream to catch stdout from forked programs via popen
cego 19.03.2017 2.32.16 Introduced archive manager, which can be triggered, to perform an online backup. Far now, online backups have to be triggered externally.
The achive manager should make backup / restore handling more convenient
lfcbase 19.03.2017 1.9.2 Added CommandExecuter::executeStream method to catch stdout for any forked process
cego 18.03.2017 2.32.15 Version released
cego 18.03.2017 2.32.15 Added database verify006 to check multidimensional btrees also in combination of null value handling.
cego 16.03.2017 2.32.15 * Fix in CegoObjectCursor::getNext, double method call for unlockData removed. * Small grammar correction to treat distinct flag for select-star statement * Fix in CegoBTreeCursor::compValue, null values have not been handled correctly. For string values, string termination was not clean, which also might lead to wrong cursor results
cego 11.03.2017 2.32.14 Version released
lfcbase 11.03.2017 1.9.1 Version released
cego 11.03.2017 2.32.14 Added check to CegoXMLSpace::addArchLog to verify, that directory for new archive location really exists
cego 11.03.2017 2.32.14 Added archive log management to curses based CegoAdmMon administration console
lfcbase 11.03.2017 1.9.1 Small fix for Monitor::showFormBox, in case of menu elements, delete key is disabled
cego 08.03.2017 2.32.13 Version released
cego 07.03.2017 2.32.13 - Fix in CegoBTreeValue::valueFromSchema added.
In case of multidimension btree objects, the insert of new values might fail, if string bases attributes occur at the beginning Here comes a sample :
drop if exists table t1; 
create table t1 ( a string(10), b string(10), c int ); 

insert into t1 values ( 'HUGO', 'ALPHA', 0 ); 
insert into t1 values ( 'HUGO', 'BETA', 0 ); 
insert into t1 values ( 'HUGO', 'GAMMA', 0 ); 
insert into t1 values ( 'HUGO', 'EPSILON', 0 ); 

create unique btree b1 on t1  ( a, b); 

-- this update will fail
update t1 set c = 1; 
- Fix in CegoDistManager::registerObjects, registration of btree objects was still missing. This might lead to wrong results for drop if exists btree statements
cego 07.03.2017 2.32.12 Version released
cego 06.03.2017 2.32.12 Correstion for distinct clause. With the current grammar implemention, queries with nested selects and using the distinct operator might fail. Cego.def grammar and CegoAction implementation has been changed in way, that distinct option is just allowed at the beginning ( e.g. select distinct count(a) from t1 and NOT select count(distinct a) from t1 )
This should simplify usage, since by using the distinct clause, distinct tuples are retrieved either for plain queries or for aggregation
Confusing sample not allowed anymore : select count(distinct a), count(distinct b) from t1 ... now select distinct count(a), count(b) from t1 )
cegobridge 05.03.2017 1.1.3 Version released
cego 05.03.2017 2.32.11 Version released
cego 04.03.2017 2.32.11 Online index build up tested and verified. First tests with heavy insert operations ( using cgblow ) during index build went succesful.
cego 04.03.2017 2.32.11 Improvements for CegoAdmMon role permission handling, added remove permission option
cego 04.03.2017 2.32.11 Preparation of CegoObjectCursor and CegoTableManager to support online index rebuild with write access to the table.
For this, concurrent insert operations have to be performed with append =true. The ObjectCursor locks the last page until the index rebuild is finished ( method setLastPageSync )
In this way, the index can be build up in parallel, while further tuples could be appended to the table. ( just supported for btree index objects )
cego 25.02.2017 2.32.10 Version released
cego 25.02.2017 2.32.10 Fix in CegoDistManager::stopDistTableSet, removing of btree objects from database object dictionary was still missing
In CegoTableManager::dropTableSet now also counter objects are dropped ( stored in the database xml file ).
cego 25.02.2017 2.32.10 Added some sizing optimizations for CegoAdmMon forms
cego 25.02.2017 2.32.10 Fix in CegoRecoveryManager::recoverCurrentTransactionLog, added the force option to addCounter method, since counters already could be synched to xml ( not completely transaction save )
cego 18.02.2017 2.32.9 Version released
lfcbase 18.02.2017 1.9.0 Version released
cego 15.02.2017 1.9.0 Added class Pager for curses based pager implementation
cego 15.02.2017 2.32.9 Fix in CegoTableManager::getPoolInfo, readdelay and writedelay was not calculated correctly
lfcbase 05.02.2017 1.9.0 Added Monitor class for ncurses based GUI utility implementation. This class provides GUI layout and event handling to simply ncurses based GUI tool implementaton.
cego 04.02.2017 2.32.9 Added CegoFieldValue::getDim method required for arithmetic operations on fixed values
cegobridge 31.01.2017 1.1.3 Fix in MySQLAction::backChar to avoid clang40 compile error
cego 31.01.2017 2.32.9 Include stdlib.h added in CegoNet ( still missing forLinux compiles )
cego 29.01.2017 2.32.8 Version released
lfcbase 28.01.2017 1.8.12 Version released
lfcbase 28.01.2017 1.8.12 Changed methods for class Sleeper to static. Added Sleeper class test to test suite
cego 28.01.2017 2.32.8 Small improvements for CegoAdmMon curses based admin console
lfcbase 26.01.2017 1.8.12 Added include file limits.h in Chain.cc. For Linux compiles, this include is required ( definition of INT_MAX and INT_MIN )
cego 21.01.2017 2.32.7 Version released
cego 21.01.2017 2.32.7 Fix in CegoFileHandler::releaseFiles. _tabSetId and _isReg vars have to be set to zero/false in any case. Otherwise, it might happen that old entries are still visible and in case of a tableset recreation obsolete file handle information is provided
cego 18.01.2017 2.32.7 Method CegoTransactionManager::hasOpenTransaction added to check for open transaction for a spedific table. This method is called now before a table can be dropped to ensure there are no open transaction for this table.
cego 04.01.2017 2.32.6 Version released
cego 02.01.2017 2.32.6 Small performance improvement in CegoBufferPool::bufferFix
Instead of copying the buffer head data to a local variable via memcpy, a pointer variable is used to access the data directly
Performance improvement just a few percent ...
cego 01.01.2017 2.32.5 Version released
cego 01.01.2017 2.32.5 Added another performance patch to CegoBTreeCursor.
The method compValue has been redesigned in a way, that comparison is prepared at cursor creation time and so could be executed in a optimized and faster way
This speeds up queries with joined tables, where the joined table is traced many times ( e.g. select count(*) from t1, t2 where t1.a = t2.a )
cego 30.12.2016 2.32.4 Version released
cego 30.12.2016 2.32.4 Fixes and improvements for table export added
In CegoXPorter::xmlExportable, the pOutStream pointer was deleted, which lead to a core dump ( pointer is already deleted by Element )
Row counter handling and messages have been improved
cego 30.12.2016 2.32.4 Fixes for CegoBTreeCursor added
cego 29.12.2016 2.32.4 Change back to memove call in CEgoBTreeNode:shiftEntries. Copying manually and bytewise decreased performance about two times for building up btree objects. This has been observed on native POSIX ( FreeBSD 11 ) but also on MSYS64 compiles
Thanks for Deutsche Bahn to provide ( free ) internet on train, so I was able to spent this time on the analysis :)
cego 28.12.2016 2.32.4 Improvements for CegoBTreeCursor. With the new introduced methods CegoBTreeNode::getMedPage and CegoBTreeNode::rightValue, the search for the appropriate subnode can be made with logarithmic efforts instead of linear search. To validate this improvement, the following query has been setup for a random filled table t1
select * from t1 ta where exists ( select * from t1 tb where tb.b = ta.b );
Execution time with the improved btree cursor was two times faster than with old implementation.
cego 26.12.2016 2.32.4 More performance improvements made for btree creation
- changed linear search efforts in CegoBTreeNode::getChildPage to logarithmic search efforts ( introduced lb /rb variable )
- Change in CegoBTreeManager::allocPage. Since for cache based creation, just a pageId must be allocated, the low level method CegoFileHandler::allocatePage is used.This avoids an unnessary bufferFix call for the new page - Introduced appendFid variable for CegoFileHandler class. In case of many managed datafiles, the last file with avaiable pages is used for the allocatePage method.
- Performance comparison to MariaDB indicates now a better scaling from 2 million rows and up ( by using cego btree cache )
cego 25.12.2016 2.32.4 Improvement modifications for btree implementation increased build up speed for just about 3 percent. It seems, the most time is used by calling shiftEntries method, where memory is moved via memmove.
I observed, that 8k page size ( instead of 16k ) brought up some performance improvement for btree creation of about 100% ( for type string(60) with random values )
cego 25.12.2016 2.32.4 More performance improvements in CegoBTreeManager and CegoBTreeNode, overall impact still has to be analysed
Fix in CegoTableManager added for alter table modify column, columns with existing btree or key objects can not be modified anymore
cego 24.12.2016 2.32.4 Further improvement approach in CegoBTreeManager to increase btree creation performance. BufferPage handles have been changed from native variables to pointer handles. This should reduce page access efforts in case of enabled btree cache
cego 24.12.2016 2.32.3 Version released
cego 23.12.2016 2.32.3 Fix in CegoAction::insertStore and CegoAction::insertValueSpecStore; for value array inserts via network, the ack for the protocol was no satisfied ( e.g. insert into t1 values ( 1, 'XXX'),(2,'YYY'),...) which leads to a hanging database client. Since class CegoQuey was already prepared for bulk inserts, this was a simple fix, just calling execQuery via insertStore parser method just one time.
cego 23.12.2016 2.32.3 Code cleanup in CegoBTReeManager and CegoBTreeNode, use of static method CegoDataPointer::getEncodingLength, ( define of DPENCODINGLENGTH )
cego 23.12.2016 2.32.3 Fix in CegoFileHandler::CleanDataFile,pageId was not calculated correctly ( missing offset )
cego 21.12.2016 2.32.2 Version released
cego 21.12.2016 2.32.2 Fix in CegoTranactionManager, replaced LONG_TYPE with PAGEID_TYPE, since this is the correct type for page entries. This was detected on MinGW64 compiles (seg fault occured), since the type size differs on this platform.
cego 18.12.2016 2.32.1 Version released
cego 17.12.2016 2.32.1 Fixes for CegoBTreeManager::deleteBTree ( changed int type to PageIdType for page vars ) and CegoBTreeManager::insertBTree ( propValue was not setup correctly for root node propagation in some cases, which might lead to corrupt btree structure )
lfcbase 15.12.2016 1.8.11 Version released
lfcbase 14.12.2016 1.8.11 Added range check to Chain::toInteger method to catch overflow exception
cego 13.12.2016 2.32.0 Please note : Upgrade to this version requires tableset export / import ( XML mode recommended )
cegojdbc 13.12.2016 1.7.0 Version released
cego 13.12.2016 2.32.0 Version released
cego 13.12.2016 2.32.0 Functional tests with SysMT successful completed
cegojdbc 13.12.2016 1.7.0 Adaptions for cego 2.32.0 ( clob and blob reference handling )
cego 12.12.2016 2.32.0 All base checks passed, but there is still a page allocation leak for table drops
cego 12.12.2016 2.32.0 First performance analysis indicates a speedup of about 10% for btree creation, so significant speedup for full table scans.
cego 11.12.2016 2.32.0 This version brings a complete redesign of low level page handling.
Instead of page references identified by fileId and pageid, a database unique pageid is used now
This results in a complete reimplemtation of several low level classes like CegoFileHandler, CegoBufferPool, Blob handling, etc. Since pages are references by a single ( 64 bit ) id now, I expect an increased performance behaviour over all database operations.
Most code modifications are done, code complies and basic functionally works ( create tableset, create table, insert table )
cego 04.12.2016 2.31.7 Version released
cego 04.12.2016 2.31.7 Fix in CegoFieldValue for fixed value handling. In case of fixed value aggregations, the specified fixed dimension should be kept. This has been done be analysing the value dimension in the CegoFieldValue:add/sub/mu/div methods. In CegoQueryHelper::prepareFieldValue, fixed values are checked now for right dimension
cego 26.11.2016 2.31.6 Version released
cego 26.11.2016 2.31.6 Fix in CegoSelect::getQueyId added, for the ordering clause asc and desc ordering attributes were missing. This might lead to wrong ordering results if query caching is used
cego 21.11.2016 2.31.5 Version released
cego 20.11.2016 2.31.5 Changed CegoQueryHelper methods to static
cego 20.11.2016 2.31.5 Fix for CegoBTreeManager and friends regarding small string values ( string(1) )
Please note, that this fix invalidates btree format.
Btrees have to be recreated after this fix !

Type len check added in CegoAction for string, bigint, decimal and fixed types ( type len must be greater than 0 )
cego 19.11.2016 2.31.4 Version released
cego 19.11.2016 2.31.4 Fix some leaks in CegoXPorter regarding file handles and memory allocation ( improved exception handling )
cego 13.11.2016 2.31.3 Version released
cego 13.11.2016 2.31.3 Fixed a file handle leak for datafiles and logfiles ( CegoFileHandler, CegoTableManager and CegoLogManager ) After tableset creation ( or start and stop ), file handles have not cleaned up properly. This lead to file remove problems in case of a tableset drop. This effect was detected by building and testing the MinGW64 port
cego 13.11.2016 2.31.2 Version released
cego 13.11.2016 2.31.2 Fix in CegoClient for escape character handling in batch mode
cego 13.11.2016 2.31.2 Fix in CegoClient for dumpfile generation. Default values handling corrected
cego 13.11.2016 2.31.2 Join optimizer fix in CegoSelect, CegoAttrCond and CegoBtreeCursor. join attributes are checkd now in a more sophisticed way, which leads to improved execution performace for advanced joins
cego 06.11.2016 2.31.1 Version released
cego 06.11.2016 2.31.1 Fix in CegoBTreeManager::insertBTree, in case of a duplicate exception, a bufferpool leak occured ( buffer is not unfixed ).
cego 18.09.2016 2.31.0 Please note : null comparison has been changed with versio 2.31.0 . All index objects containing null values must be reorganized. I recommend export and import for the complete tableset
cego 08.09.2016 2.31.0 Version released
cego 07.09.2016 2.31.0 Added database flag DUPLICATENULL to allow duplicate null values for unique btree objects
cego 19.08.2016 2.30.26 Version released
cego 18.08.2016 2.30.26 Fix in CegoFunction::evalFieldValue, for functions date2str, date2int, int2date, type casting to appropriate type has been added. Without the cast, the functions might return wrong results
cego 14.08.2016 2.30.25 Version released
cego 14.08.2016 2.30.25 Adaptions for CegoBlowTab to use CegoNet API
cego 13.08.2016 2.30.25 Completion for blob methods in CegoNet
cego 13.08.2016 2.30.25 Improved flow control in CegoClient ( based on ncurses )
cego 12.08.2016 2.30.25 Optimization in CegoClient, just high level CegoNet API methods are used now for client implementation. Missing methods have been added to CegoNet API
cegojdbc 11.08.2016 1.6.1 Version released
cegojdbc 11.08.2016 1.6.1 Added datetime format parameter evaluation to CegoNet ( _dtFormat )
cego 11.08.2016 2.30.24 Version released
cego 11.08.2016 2.30.24 Fix in CegoNet::connect, the global vars __dateTimeFormat, __currencySymbol and __decimalPoint are set up now to appropriate values
cego 26.07.2016 2.30.23 Version released
cego 26.07.2016 2.30.23 Added verify005.sql to dbcheck suite to verify cast operations
cego 26.07.2016 2.30.23 Fix in CegoClient, global vars __currencySymbol and __decimalPoint still have not been set up correctly, doen in the same way as for CegoMain on server side
cego 25.07.2016 2.30.22 Version released
lfcbase 25.07.2016 1.8.10 Version released
cego 25.07.2016 2.30.22 Fixes for cast operations regarding values for type fixed
lfcbase 25.07.2016 1.8.10 Improvements for BigDecimal class
All values are normalized now and stored now with non trailing zeros
cego 22.07.2016 2.30.21 Version released
cego 22.07.2016 2.30.21 Fix in CegoProcedure::execute and CegoProcedure::getRetVal In the castTo method, the type dimension was still not treated. This might lead to wrong cast results especially for fixed values
cego 22.07.2016 2.30.21 Fixed cgadm online help for import command, the nologging option was not documented
cego 20.07.2016 2.30.21 In CegoRecoveryManager, added tableset argument line argument for calling the external log manager.
This makes it more easy in the log manager code, to implement tableset dependent restore strategies
cego 20.07.2016 2.30.20 Version released
cego 20.07.2016 2.30.20 A patch was needed in CegoBlowTab for MinGW compile. Since the functions srandom and random are ( still ) not provided, a define has added to map to srand and rand
cego 17.07.2016 2.30.19 Version released
lfcbase 17.07.2016 1.8.9 Version released
cego 17.07.2016 2.30.19 The previous patch in lfcbase required a patch for CegoLogThreadPool::copyLog. Since the archfile file was not closed after trunc, the rename operation failed now. close method call was added
lfcbase 17.07.2016 1.8.9 Patch file File class, operator= and operator+= did not close the file descriptor after copying / appending. This may cause a problem for subsequent method calls on the instance. ( e.g. renaming or removing )
This effect actually has just been observed for MinGW64 compiles
cego 17.07.2016 2.30.18 Version released
lfcbase 17.07.2016 1.8.8 Version released
cego 16.07.2016 2.30.18 Catched server termination in CegoTableManager::writeCheckpoint. If log files could not be archived, the method does not recognized server termination ( runstate = OFFLINE )
cego 16.07.2016 2.30.18 Improvement added dor log file shipping in CegoLogThreadPool::copyLog. The archive log file is first writte to a temporary file and if finished, is moved than to its original file name. For the tape management, this is an indication, that the file is completely written and is ready for further processing
lfcbase 16.07.2016 1.8.8 Added File::rename method to be able to move files via file class
lfcbase 15.07.2016 1.8.7 Version released
lfcbase 15.07.2016 1.8.7 Added errno.h include to Chain module
cego 14.07.2016 2.30.17 Version released
lfcbase 14.07.2016 1.8.6 Version released
lfcbase 13.07.2016 1.8.6 Some exception improvements in Chain class
lfcbase 13.07.2016 1.8.6 A space character was missing in exception message for date format lists
cego 13.07.2016 2.30.17 Fixed for point-in-time recovery, Date format handling was not done correectly
cego 13.07.2016 2.30.16 Version released
cego 13.07.2016 2.30.16 Elimination of BUFFERPOOLHASHKEY. The bufferpool position is now calculated based on the page offset of the corresponding datafile ( this information is provided by CegoFileHandler::getRegPageOffset )
This leads to a much better distribution and usage of the available buffer pool pages
cego 12.07.2016 2.30.16 Fix in CegoTableManager::createBTree, the creation of the btree object must be done in a dedicated exception block, otherwise the btree object is dropped, if it already exists.
cego 10.07.2016 2.30.15 Version released
lfcbase 10.07.2016 1.8.5 Version released
cego 10.07.2016 2.30.15 Reactivation of rollback segment record locks in CegoLockHandler class.
In CegoObjectManager::insertData, in case of rollback segements insert operations, the RB record lock is used instead of the system record lock. This might avoid some deadlock situations.
lfcbase 09.07.2016 1.8.5 Added statlock mutex in ThreadLock class for protecting staistic counters. It seems, increment and decrement operators on atomic values are no more thread safe ( Once it was, but I guess this is a compiler issue )
Since the lock statistics can be disabled for production mode, there is not performance impact caused by the additional mutex calls
cego 09.07.2016 2.30.15 Added update sync mode. With this mode, the user can decide, if an update or delete should be blocked until another concurrent transaction is finished or return immediatly without updating concurrent affected tuples
cego 09.07.2016 2.30.15 Made __dateFormatList in CegoMain threadsafe
For the point-in-time recovery timestamp format, now the server defined format is used ( variable CGPITFORMAT is obsolete )
cego 07.07.2016 2.30.14 Version released
cego 07.07.2016 2.30.14 Fix in CegoBufferPool::poolINfo, the spread rate calculation was not done correctly
lfcbase 03.07.2016 1.8.4 Version released
cego 03.07.2016 2.30.13 Version released
cego 03.07.2016 2.30.13 Cast handling in CegoFieldValue::castTo completed.
This allows an any to any value casting, except lob values and some unsupported datetime casts ( e.g. bool to datetime really makes no sense )
lfcbase 30.06.2016 1.8.4 Improved exception handling in class Chain for type conversion methods
cego 30.06.2016 2.30.13 Added more cast cases to CegoField::castTo, still not completed
cego 29.06.2016 2.30.13 Improvement for hash calculation in CegoBufferPool::calcSegement. For a better page spreading, the segment calculation was changed to a more linear approach
cego 27.06.2016 2.30.13 Added alter table modify command just for default values.
Usage :
 alter table t1 modify column a default 42; 
cego 27.06.2016 2.30.12 Version released
cego 26.06.2016 2.30.12 Added cast improvements to CegoFieldValue::castTo method, which are also checked now with check050
cego 26.06.2016 2.30.12 Evaluation of locale to find out decimal point character. E.g. for english locales this is ., for german this is ,. The character is used for float value handling in CegoFieldValue methods.

For default value handling in alter table statements, the cast methods are also called now. check050 has been added to verify this feature.
cego 22.06.2016 2.30.11 Version released
cego 22.06.2016 2.30.11 Fix in CegoRecoveryManager::recoverTableSet, the lsn was incremented which lead to leaks in the transaction log. This could result in an incomplete recovery procedure
cego 21.06.2016 2.30.11 Improvements for tableset recovery, external log manage fiel is checked in CegoAdminThread::medRecover before restore procedure is started.
cego 19.06.2016 2.30.10 Version released
cego 18.06.2016 2.30.10 Fix in CegoLogManager::logAction, if online redo log is full, the current log entry has to be written anyway, otherwise a checkpoint is written and subsequent logAction call in CegoTableManager::logIt might lead to duplicate entries in case of a crash recovery
cego 18.06.2016 2.30.9 Version released
cego 17.06.2016 2.30.9 Fixes for query and table cache added ( addEntry method was still not clean )
cego 17.06.2016 2.30.9 Added tableset runstate CHECKPOINT to be set during a tableset checkpoint is performed.
Since this is a critical section in terms of data consistency, no system crash should occur while writing a checkpoint.
If so, the tableset now is marked with status CHECKPOINT and cannot be used anymore ( tableset recovery from backup required )
cego 17.06.2016 2.30.9 Added tableset runstate CHECKPOINT to be set during a tableset checkpoint is performed.
Since this is a critical section in terms of data consistency, no system crash should occur while writing a checkpoint.
If so, the tableset now is marked with status CHECKPOINT and cannot be used anymore ( tableset recovery from backup required )
cego 16.06.2016 2.30.9 Patch in CegoDistManager::startTableSet, before starting redo log file recovery, the tableset state has to be set to RECOVERY
Otherwise, occupied redo logs are not archived by the log manager.
This problem might occur in case of a crash recovery with archive mode set to ON
cego 16.06.2016 2.30.9 Patch in CegoQueryCache and CegoTableCache ( for each method addEntry )
The usedSize calculation was not done correctly for replaces entries
cego 16.06.2016 2.30.8 Version released
cego 15.06.2016 2.30.8 Added table and cache used size information to show tableset admin command
This indicates the amount of memory, which is already allocated for cached data
cego 14.06.2016 2.30.8 Added synrchonization for query and table cache handling.
The lack of synchronization migth lead to core dumps, if a cache entry is freed but also be used by a query
So before cache cleanup, it has to be checked,
if the corresponding cache entry is still in use
If so, it has to be wait, until the cache is clean. For both caches ( query and table), the similar logic is used
cego 12.06.2016 2.30.8 Added improvement for query cache handling
If a stored function, which are used in the cached query, was modified, the cache entry will be invalidated
For this, the CegoSelect::getTableList method was changed to CegoSelect::getObjectList and also the used functions are evaluated and added to this list.
sysmt 12.06.2016 5.5.9 Adapted sysmtexp and sysmtimp X-port utilities for current schema definition
cego 12.06.2016 2.30.8 Cache cleanup in CegoQuery class is performed now AFTER the modifying action.Otherwise, it may appear, that a cache entry is made after cache cleanup but also before the modifying action.
This may lead to wrong results retrieved from obsolete query cache
cego 11.06.2016 2.30.7 Introduced cego web specials to discuss specific database issues
cego 11.06.2016 2.30.7 Version released
cego 11.06.2016 2.30.7 Fixed memory leak in CegoSelect::nextTuple. Since the querycache is allocated by the CegoQueryCache instance, the pCacheList variable has to be freed after calling the addEntry method. Actually, the logic is not very smart, since the cache element is build up two times ....
cego 04.06.2016 2.30.6 Version released
cego 03.06.2016 2.30.6 The following query may cause a core dump
create table t1(a string(100));
insert into t1 values ( 'Hugo Habicht');
insert into t1 values ( 'Kim Kaiser');
select substr(a, 1, getpos(a, ' ')) from t1;
For return value length evaluation, the method CegoFieldValue::asInteger is called on a null value which causes the dump. A fix has been added, so the method returns a value of 0 in case of null values.
cego 16.05.2016 2.30.5 Version released
cego 15.05.2016 2.30.5 Code optimizations tested. The performance improvements on subselects are achieved as expected. Strike !
cego 15.05.2016 2.30.5 Code optimization for join buffer handling. Now a double pointer list is used to just keep references on CegoField lists. This should avoid expensive memory copies in case of creating parent join buffers for sub selects. This modification had impact on many parts in the code and first must be tested intensive
cego 14.05.2016 2.30.4 Version released
lfcxml 14.05.2016 1.2.4 Version released
lfcbase 14.05.2016 1.8.3 Version released
cego 12.05.2016 2.30.4 More work on code format cleanup
lfcbase 12.05.2016 1.8.3 More work on code format cleanup
lfcxml 12.05.2016 1.2.4 More work on code format cleanup
lfcbase 10.05.2016 1.8.3 More work on code format cleanup, 29 files to go ...
lfcbase 07.05.2016 1.8.3 update of config.guess to timestamp='2016-04-02'
lfcxml 07.05.2016 1.2.4 Code format cleanup, update of config.guess to timestamp='2016-04-02'
lfcbase 07.05.2016 1.8.3 Code format cleanup, updated config.guess to timestamp='2013-06-10'
cego 07.05.2016 2.30.4 Updated config.guess to timestamp='2016-04-02'
cego 07.05.2016 2.30.4 More work on code format cleanup. Still 80 modules ahead ...
cego 05.05.2016 2.30.4 Fix in CegoAdmMon, CGNOMONITOR definition was fixed defined ( should be defined via configure )
cego 05.05.2016 2.30.4 More work on code format cleanup
cego 01.05.2016 2.30.4 Code format cleanup fixes, elimination of obsolete commented code, no logical changes
cego 09.04.2016 2.30.3 Version released
lfcbase 09.04.2016 1.8.2 Version released
cego 07.04.2016 2.30.3 Fix in CegoBufferPool::bufferFix. Small leak, since last page for each pool segment never could be used ( hashId calculation )
cego 06.04.2016 2.30.3 Cosmetic syntax change for set permission and remove permission admin command
cego 06.04.2016 2.30.3 Small information fix for query cache information in show tableset admin command
lfcbase 06.04.2016 1.8.2 Error message fix for Datetime constructor ( format strings are enclosed in brackets )
cego 03.04.2016 2.30.2 Version released
cego 03.04.2016 2.30.2 Changed default protocol from xml to serial. Date format handling completely implemented
cego 03.04.2016 2.30.2 Fixes for date format handling. The format string whihc is specified for the server is also used now for client formatting. This results in some network protocol fixes for serial but also xml network protocol.
cego 02.04.2016 2.30.1 Version released
lfcbase 02.04.2016 1.8.1 Version released
cego 31.03.2016 2.30.0 Version released
cego 30.03.2016 2.30.0 - Fix in CegoDistCursor for quey plan calculation ( join objects )
- Fix in CegoAdminThreadPool and CegoLogThreadPool for thread load calculation - Major change for tablecache and querycache management, for both dedicated tableset entries are managed. Cache enabling, cache size and num entries can be controlled now on tableset level.
cego 20.03.2016 2.29.4 Version released
cego 13.03.2016 2.29.4 Fix in CegoAction and CegoDbHandler to handle query abort requests correctly ( initiated by cgadm via abort db thread command )
cego 06.03.2016 2.29.3 Version released
lfcbase 06.03.2016 1.8.0 Version released
cego 06.03.2016 2.29.3 Fixes for table and query cache handling
cego 04.03.2016 2.29.3 Fix in CegoDistManager::dropDistObject, table and query cache have been checked for cleanup, if a table is dropped
cego 01.03.2016 2.29.3 Fix in CegoQuery.cc, added table and query cache cleanup for alter and rename queries
lfcbase 25.02.2016 1.8.0 Fix in Chain for truncleft, truncRight and cutTrailing. In case of single character strings, the methods might return wrong results.
cego 25.02.2016 2.29.3 Fix in CegoClient to parse multi line statements correctly. Further multi line merge token ( \ ) has been added to merge long string or clob values.
Now the following statements are possible
insert into t1 values ( 1, 'this is\
a multi line \
message \
with four lines');
lfcbase 21.02.2016 1.8.0 Started with implementation of TextIndex class ( utility class for full text index creation )
cego 15.02.2016 2.29.2 Added include of string.h in CegoAction.c ( compile error occured on Suse Linux )
cegojdbc 05.02.2016 1.6.0 Version released ( clob ready, but still unimplemented clob methods)
cego 05.02.2016 2.29.1 Version released
lfcbase 05.02.2016 1.7.2 Version released
cego 05.02.2016 2.29.1 Modification in cgclt for raw mode, Now just plain data is listed, with the command line option --raw=X, a separator token can be setup as a column separator
lfcbase 02.02.2016 1.7.2 Memory leak fixed in File::readLine
cego 02.02.2016 2.29.1 Very long strings are handled now in CegoAction and CegoClient to also parse large clob values
cego 02.02.2016 2.29.0 Version released
cego 01.02.2016 2.29.0 More work on lob handling. A fix was done for update operations on lob values in CegoTableManager::updateTuple method. Before updating the tuple, all lob references must be cloned, otherwise in case of untouched lobs, references are invalid. This approach is brute force, better would be, to stay on the untouched lob references. But in terms of transaction and recovery handling, this is not trivial
cego 31.01.2016 2.29.0 Required network protocol expansions done for clob handling ( putclob, getclob, delclob )
cego 30.01.2016 2.29.0 Basic clob handling works
cego 30.01.2016 2.29.0 Started with clob datatype implementation
cego 30.01.2016 2.29.0 Fix in CegoSelect constructor, _cacheEnabled var was not initialized in the decoding constructor, which might lead to core dumps in case of recovery of complex with enabled querycache Fix in CegoAdminThread constructor, disableAuth method for TableManger called, otherwise tableset recovery might fail with auth error
lfcbase 17.01.2016 1.7.1 Version released
lfcbase 17.01.2016 1.7.1 Fix in Datetime.cc, added include config.h, otherwiese the local implementation of strptime ist used. This should just be done, if the system API does not provide this call ( e.g. MINGW ) .
cegobridge 12.01.2016 1.1.2 Version released ( version sync )
cegobridge 12.01.2016 1.1.1 Version released ( with improvements for make environment )
lfcxml 12.01.2016 1.2.3 Version released ( just a small patch in xmltest/Makefile.am )
cegobridge 11.01.2016 1.1.1 Patch in MySQLFormatter.cc to adapt enumeration change in CegoObject::ObjectType
Adaptions in configure.ac
cego 03.01.2016 2.28.3 Version released ( also with fix in configure.ac as same as for lfcxml and dragon )
dragon 03.01.2016 1.4.1 Patch in configure.ac just relevant for FreeBSD compiles, since for configure /bin/sh is used, which cannot handle LDFLAGS+= " $LFC_LIBS" assignment. Instead LDFLAGS="$LDFLAGS $LFC_LIBS" is used now Version released
lfcxml 03.01.2016 1.2.2 Patch in configure.ac just relevant for FreeBSD compiles, since for configure /bin/sh is used, which cannot handle LDFLAGS+= " $LFC_LIBS" assignment. Instead LDFLAGS="$LDFLAGS $LFC_LIBS" is used now
Version released
cego 03.01.2016 2.28.3 Since it is not enough jut checking the tuple header info for update deletes, a record locking has to be added to avoid duplicates. In this sense, record locking for setTupleInfo method call ( used in CegoTableManager and CegoTransactionManager ) was added. For this, the lockRecord and unlockRecord method have been reactivated in CegoLockManager class.
This lock avoids, that in case of concurrent tuple updates duplicate tuples are produced by an update.
dragon 02.01.2016 1.4.0 Version released ( adaptions for mingw build )
cego 02.01.2016 2.28.2 Version released
cego 02.01.2016 2.28.2 Fix in CegoTableManager::deleteDataTable ( renamed to deleteDataTableEntry )
Since we allow now parallel updates, the method must check if the target tuple has already been touched by another transaction. Otherwise, invalid double entries could occur in case of concurrent updates on the same tuple.
If a concurrent transaction is detected, the method returns false. This return value is used by the updateTuple method to decide, if the subsequent insert operation must be performed.
cego 02.01.2016 2.28.2 Several changes from type int to type unsigned long long
cego 31.12.2015 2.28.1 Version released
lfcxml 31.12.2015 1.2.1 Version released
cego 31.12.2015 2.28.1 Fix in configure.ac to set up library path for lfcbase and lfcxml in a right way
lfcxml 31.12.2015 1.2.1 Fix in configure.ac to the up path for lfc base library in a right way
cego 30.12.2015 2.28.0 Version released
lfcxml 30.12.2015 1.2.0 Version released
lfcbase 30.12.2015 1.7.0 Version released
cego 28.12.2015 2.28.0 Change index objectype to btree, avl index objects must be created now explicit using the new introduced avltree object type
cego 28.12.2015 2.28.0 Please note, that this version make datafiles from older versions incompatible.
An upgrade requires a xml tableset export of existing data and a restore after succesful upgrade
This version also contains many code cleanup fixes and some fixes for btree handling.
cego 26.12.2015 2.28.0 Fix in CegoTableManager::createBTree, in case of an exception during build up, the allocated have to be cleanup up. For this the a rollback method was introduced in class CegoBTreeManager.
Fix in CegoTableCursor, invalid btree objects have not been ignored
cego 26.12.2015 2.28.0 Many adapations to make cego full 64bit ready also in combination with MSYS2 / MINGW64. This resulted in change of many variables from type long to type unsigned long long (type long is just 32 bit for Windows ) With an appropriate MSYS2 / MINGW64 installation, cego compiles proper and runs stable now.
Many thanks to the MSYS/MINGW developers for their amazing work !
lfcbase 26.12.2015 1.7.0 Adaptions made for build with msys2 / mingw64. Many windows specific stuff could be eliminated, since mingw64 provides better POSIX support ( e.g. pthreads, timer functions .. )
cego 18.12.2015 2.27.4 Full time table scan performance for 2 mio tuples is now
CGCLT > select count(*) from t1;
|      AGGR |
|  count(*) |
|   2000000 |
1 tuples
ok ( 0.293 s )
cego 18.12.2015 2.27.4 Version released
cego 18.12.2015 2.27.4 Added performance fix for CegoQueryHelper::decodeFVL, since the tuple context information is already from the method called, the tid, tastep and ts parameters have been remove from this method. This saves some decoding time
cego 16.12.2015 2.27.3 Version released
cego 16.12.2015 2.27.3 Fix in CegoSelect::CegoSelect, the pCacheList variable was not initialized to 0 for all constructors. In case of system table selects, the variable might be undefined which might lead to segmetation faults.
cego 16.12.2015 2.27.3 Changed synchronization level for btree creation. So the base table can also be accessed while btree is created ( During creation btree status is invalid )
This also allows to perform on online btree reorganization, since a new btree can be build up in parallel
cego 15.12.2015 2.27.3 Fix in CegoSystemObject::createSystemSpace, id values for bustat table must start with id 1 instead of id 0, otherwise, bustat information retrievel fails or may result in a core dump ( select * from $bustat )
cego 12.12.2015 2.27.2 Version released
cego 12.12.2015 2.27.2 Fix for system tables in CegoAttrDesc::evalReferences, for system tables the evalTableReferences method has to be called, otherwise attributes for system tables can not be accessed
cego 11.12.2015 2.27.2 Add dbCheck for Fetch & Cache ( check047 ), all base checks are run now with querycache ON and OFF
cego 11.12.2015 2.27.2 Fix in CegoSelect::nextTuple, the cache schema was not set up properly, if nextTuple was just called with empty jfl. This happens in case of procedure cursors, ( CegoProcFetch ), where the field value list is for all method calls empty
cego 11.12.2015 2.27.2 Fix for CegoExpr::getAggregationList(), missing break operations in switch block. This bug might lead to error messages regarding aggregation queries like
CGCLT > select sum(a) + 0 from t1;
Error : Invalid expression sum(t1.a) + 0 for aggregation
cego 10.12.2015 2.27.2 Modification for admin command set tsroot. Also the base path for all defined datafiles is set now to new tsroot
cego 09.12.2015 2.27.1 Version released
cego 09.12.2015 2.27.1 Fix in CegoBTreeCursor and CegoBTreeManager. Several conditons have been changed from
fileId && pageId 
fileId || pageId
. This bug may results in invalid btree objects in case of btree spawn over several datafiles ( the pageId might be 0 in the next file )
cego 06.12.2015 2.27.1 Fix in CegoGroupSpace::insertTuple, the grouping tuple has to be search using getTableAlias instead of getTableName, otherwise the following query returns wrong results
select count(*), a from t1 group by a; --works
select count(*), a from t1 tx group by a; -- broken
A check for this has been added in dbcheck suite
cego 05.12.2015 BTree Cache test done with 100 million tuples.
bigts > select count(*) from t1;
|      AGGR |
|  count(*) |
| 100119314 |
1 tuples
ok ( 47.803 s )
bigts > create btree b1 on t1(a);
Btree b1 created
ok ( 9584.849 s )
In fact, this is a creation time of about 2.6 hours. It has been observed, hat without the btree cache, the creation takes about 20 hours.
cego 04.12.2015 2.27.0 Version released
cego 04.12.2015 2.27.0 Btree Cache are working now stable, performance tests with large tree still outstanding ...
cego 02.12.2015 2.27.0 Introduced BTree Cache to improve build up speed of large btree objects.This feature is now basically implemented and must be still tested
cego 01.12.2015 2.26.16 Version released
cego 01.12.2015 2.26.16 Ugly bug fixed in CegoObjectManager::releaseDataPtrUnlocked. The logical operator && must be replaced by ||, otherwise fix leak arises
cego 29.11.2015 2.26.16 Fix in CegoSelect::nextTuple for query cache to avoid, that queries including system tables are cached.
cego 29.11.2015 2.26.16 Error message fixes in CegoXPorter
cego 29.11.2015 2.26.15 Version released
lfcbase 29.11.2015 1.6.7 Version released
cego 29.11.2015 2.26.15 Simulation status
testdb.nepustil.net> ./showSpace 
Total Size      = 1524 GB
Total Allocated = 78 GB
cego 29.11.2015 2.26.15 Introduced bufferpool distribution rate information in show pool output. This indicates, if the buffer pool is used in a balanced way. The behaviour can be changed with the BUFFERPOOLHASHKEY parameter.
The list pool command now receives the pool information in several chunk messages. This allows to print also very large buffer pool configurations
lfcbase 28.11.2015 1.6.7 Improvement for ListT template class. The end of the list is now stored int _listEnd variable. This improves Insert performance, since the end of the list can immediately accesed instead of tracking through the whole list until the end is reached.
cego 28.11.2015 2.26.15 Introduced BUFFERPOOLHASHKEY as a database tuning parameter. Based on this parameter, the corresponding bufferpool slot for a fileId, pageId tuple is calculated. Depending on the configured datafile size, it might be useful to adjust this parameter
lfcbase 28.11.2015 1.6.6 Version released
cego 28.11.2015 2.26.15 Simulation runs stable now
testdb.nepustil.net> ./showSpace 
Total Size      = 1524 GB
Total Allocated = 57 GB
lfcbase 27.11.2015 1.6.6 Patch in ThreadLock, the mutex for lock statistics has been removed, since there is no need for synchronization. Also error have not been checked for the pthread_rwlock_wrlock, which might case some deadlocks
cego 27.11.2015 2.26.15 Cego Terra Test started. Approach is to load about 1TB of random data through the whole stack ( via cgblow ). Actually we are running with 19 parallel processes loading concurrently 4 different tables. Estimated date to achieve TB-Size is in about one month
testdb.nepustil.net> ./showSpace 
Total Size      = 1524 GB
Total Allocated = 35 GB 
cego 27.11.2015 2.26.15
cego 27.11.2015 2.26.15 Changed command line argument --nolockstat to --lockstat. So the default value is lockstat disabled, since this has impact to the database performance
cego 26.11.2015 2.26.15 Modification of hash function in CegoBufferPool to achieve a better distribution for large buffer pool configurations
lfcbase 24.11.2015 1.6.5 Version released
lfcbase 24.11.2015 1.6.5 Added kill method to class Process, added SigTest check program to basecheck suite
lfcbase 24.11.2015 1.6.5 Improvements in test suite
cego 18.11.2015 2.26.14 Version released
lfcxml 18.11.2015 1.1.8 Version released
lfcxml 18.11.2015 1.1.8 Added automake check suite to package
Small fix for XMLSuite constructor for pInStream initialization
lfcbase 18.11.2015 1.6.4 Version released
cego 18.11.2015 2.26.14 Added encoding implementation for CegoCaseCond to allow case conditions also for update operations like
update erp_disk set location = case when substr(wwn,20,1) = '1' then 'MD' else 'GV' end;
lfcbase 17.11.2015 1.6.4 Fix in BigDecimal::operator < and > .. comparison was not done correctly.
Added automake check suite in baseecheck directory ( derived from samples )
cego 17.11.2015 2.26.14 Cosmetic changes in CegoDefs, increased FILEMNG_MAXDATAFILE parameter to 5000
cego 15.11.2015 2.26.13 Version released
cego 15.11.2015 2.26.13 Fix in CegoAttrDesc::evalReferences. In case of join objects, the refCount was not calculated correcty, since just the join object was analysed but not the sub content object. For this, a new method was introduced ( evalTableReferences ) and in case of join object, evalReferences is called recursive for all sub content objects
cego 10.11.2015 2.26.12 Version released
cego 09.11.2015 2.26.12 cgsimload with 3 mio ops and 2 processes passed
cego 09.11.2015 2.26.12 Fix in CegoBTreeCursor::getFirst, if pAttrCond == 0 and btree is empty, the method call tries to claim a zero datapointer
Reorganization of CegoDistManager and CegoTabelManager, all methods, which are calling useObject/unuseObject are located in CegoTableManager class now.
cego 08.11.2015 2.26.11 Version released
cego 08.11.2015 2.26.11 Added more sophisticated corruption check for btrees ( CegoBTreeManager::verfiyBTree ), which also checks for any structure corructions in all btree nodes
cego 08.11.2015 2.26.11 Added btree check to CegoDistManager::verifyTable
cego 08.11.2015 2.26.10 Version released
cego 08.11.2015 2.26.10 Added make check feature for basic and gate tests
cego 07.11.2015 2.26.9 Version released
cego 07.11.2015 2.26.9 Version passed concurrent load test with 10 million concurrent operations ( random insert, update and delete on one table with 2 processes )
cego 07.11.2015 2.26.9 Fix in CegoFileHandler::allocatePage, In case of page exceed with appendMode = true, a second try is done with appendMode = false
cego 07.11.2015 2.26.9 Small fix in CegoObjectManager::reorgObject, ref page id information for append mode is set to new last page id
cego 07.11.2015 2.26.9 Small fix in CegoSelect::filterRefs, allow expressions with constant values ( getAttrRefList= 0 ) in aggregation
cego 07.11.2015 2.26.9 Locking improvements for delete and update operations. All delete operations are done now via transactions ( introduced CegoTableManager::deleteDataTableAtomic ). This allows to use a shared lock as the table lock for using the table ( CegoDistManager::deleteLocalDataTable and CegoDistManager::updateLocalDataTable )
As a result, a table can be accessed in parallel during a ( long running ) delete operation on the table( e.g. delete from table). E.g. select count(*) from table will not block anymore, rather indicates the remaining number of tuples in the table.
This modification is still under investigation and must verfied ( also in combination with btree/index objects on the table )
cego 06.11.2015 2.26.9 Fix in CegoBTreeManager::deleteBTree, the relevance value was not calculated correctly
Fix in CegoQuery, cache invalidation is done before query operations. Otherwise, if the query is aborted, an exception is thrown and the cache is not cleaned
cego 05.11.2015 2.26.8 Version released
cego 05.11.2015 2.26.8 Small modifications on cgblow load simulation client
cego 05.11.2015 2.26.8 Changed locking for delete an update operations to exclusive due to concurrency prpblems with btree operations
cego 04.11.2015 2.26.8 Added page locking to AVLIndexManager and AVLIndexCursor
cego 04.11.2015 2.26.8 Improvements for locking done.Since locking is done on page level, Insert and delete operations can be done now in parallel . For this locking had to be introduced in CegoBtreeManager::insertBTree and CegoBTreeManager::deleteBTree
cego 01.11.2015 2.26.8 Additional note : The previous patch improves performance for about 4% ( investigated on web stats for lemke-it.com )
cego 01.11.2015 2.26.8 Further performance path for grouping queries in CegoGroupSpace. Since the current grouping key is stored now in the class variable _groupSchema, some expensive list copy operations could be avoided
cego 31.10.2015 2.26.7 Version released
cego 31.10.2015 2.26.7 Performance fix has been done for record locking. In many cases, row locking could be avoided, since an appropriate locking is ensured on data page or object level. This brings another significant performance improvement close to commercial database products
cego 30.10.2015 2.26.6 Version released
cego 30.10.2015 2.26.2 The previous described performance fix results in an improved performance of about 80-90% for count aggregation queries
cego 30.10.2015 2.26.6 Added further performance fix for aggregation queries in CegoExpr and CegoQueryHelper. The aggregation list for CegoExpr now is stored in a class variable and is just evaluated the first time, it is retrieved. In the method CegoQueryHelper::aggregateTuple, the increment calculation of the count aggregation has been changed from memcpy calls to direkt pointer arithmetic
lfcbase 24.10.2015 1.6.3 Version released
cego 24.10.2015 2.26.6 Added online help for query cache and table cache in cgadm
lfcbase 24.10.2015 1.6.3 Performance fix in Datetime class. Changed dynamic allocation of struct tm var to static.
cego 23.10.2015 2.26.5 Version released
cego 23.10.2015 2.26.5 Performance improvement for nested queries ( exists select, in select) The tablecursor for the select statement is not released and reallocated for subsequent queries ( in CegoQueryHelper, the select handle is reset with argument false ) This has required a different locking strategy for the cursor object in CegoDistCursor. The cursor object has explicit to get in use, if the nextTuple method is called the first time.
cego 17.10.2015 2.26.4 Version released
cego 17.10.2015 2.26.4 Fix for CegoBtreeManager::insertBTree, duplicate handling did not work correctly, if CegoBTreeNode::addValue returns false ( node is full ) with a duplicate detection, we also have throw exception. Otherwise the node is split and a duplicate is added.
cego 17.10.2015 2.26.3 Version released
cego 17.10.2015 2.26.3 Improvements for query execution plan retrievel
cego 16.10.2015 2.26.3 Fix in CegoOutput for multline format ( e.g. execution plans have been cut off )
cego 15.10.2015 2.26.3 Performance patch in CegoTableCursor::setup. The getObjectListByTable method was called every time, when the attribute condition has been changed. Since this operation is pretty expensive, it was useful to cache the retrieved index/btree objet in a local class variables. This change results in significant query speedup for joins, where the table cursor has to be setup very often
cego 12.10.2015 2.26.3 Small fix in CegoAction::readChain, treating backslashes for quoteEscapeFlag=false was commented, reactivated
cego 11.10.2015 2.26.3 Small fix in CegoMain, Default value for csmode changed to value "ID"
cego 04.10.2015 2.26.2 Version released
cego 04.10.2015 2.26.2 Fix in CegoBufferPool::calcHas and CegoBufferPool::calcSegement
For large file id's the integer range for the hash key might be exceeded, which lead to wrong address calculation.
The hash key now is calculated in long based values
cego 03.10.2015 2.26.2 Introduced server mode with same behaviour as daemon mode, but no child process is forked and server can be terminated with Ctrl-C
cego 03.10.2015 2.26.2 Small formatting fix in CegoOutput
cego 02.10.2015 2.26.1 Version released
cego 02.10.2015 2.26.1 Fix in CegoDistCursor for inner and outer joins
Inner or outer joins with additional where condition might return incorrect result set since the condition was just evaluated inside the join.
To correct this, the where condition is also checked via evalCondition method. This required also a fix in the evalCondition method.
cego 30.09.2015 2.26.0 Version released
cego 28.09.2015 2.26.0 Added multi segment support to CegoBufferPool. Since the pool is divided now into several memory segments, this allows larger buffer pool configurations.
cego 26.09.2015 2.25.4 Improvements for output formatting regarding string functions ( egoFunction::getReturnTypeLen). Size of required column field size is now calculated, so the outlook looks more pretty
cego 24.09.2015 2.25.4 Added hints from David Binderman in CegoAction::backChar and CegoBufferPage::printPage ( changed pointer comparison to avoid -Wextra compile warnings ) Thanks !
cego 20.09.2015 2.25.3 Version released
cego 20.09.2015 2.25.3 Decreased default cache size values to 100k ( query + table )
cego 20.09.2015 2.25.3 Next fileId (CegoXMLSpace::nextFID ) calculation now analyses the existing fileId and uses the lowest available. The MAXFID attribute in the database xml file is no more used. This avoids, that file id exceeds in case of frequent creation and removement of tablesets.
cego 19.09.2015 2.25.3 Some format correction in CegoAdminHandler for
cego 18.09.2015 2.25.3 Increased parameter FILMNG_MAXDATAFILE to 10000 and TABMNG_MAXTABSET to 500
cego 16.09.2015 2.25.2 Version released
cego 13.09.2015 2.25.2 Optimization added in CegoDisCursor::distSetup(CegoAttrCond)
If the native table cursor could not set up either FULL or PART, the table cursor retrieved all available rows from the corresponding table
In this case, the table also can be cached to improve subsequent queries for this table. This fix is relevant for queries like select * from t1 where b like '%X%', since the like condition cannot be used by the table cursor
cego 13.09.2015 2.25.1 Version released
cego 13.09.2015 2.25.1 Fix in CegoSelect::nextTuple : in case of rowlimit > 0, the cached entry was not added to query cache
cego 12.09.2015 2.25.1 Added many columns sample to base test ( create, insert and select for table with 60 columns )
cegobridge 10.09.2015 1.1.0 Version released
cegobridge 10.09.2015 1.1.0 Adaptions for cego-2.25.0 API change
cego 10.09.2015 2.25.0 Version released
cego 30.08.2015 2.25.0 Added throw statement for stored procedures. This allows to throw exceptions on application level
cego 30.08.2015 2.24.4 Version released
cego 30.08.2015 2.24.4 Fix in CegoAction::execViewCreate. Views must be compiled successful now immediately after creation. Otherwise, the calculated schema is not stored correctly into dictionary.
cego 30.08.2015 2.24.4 Fix in CegoFactor::getId, if sysdate is used in queries, it should be resolved, otherwise query couldbe used from cache which returns invalid result
cego 28.08.2015 2.24.3 Version released
cego 28.08.2015 2.24.3 To improve cache performance, reduced STATICFIELDBUF defintion from 100 byte to 20 byte
cego 27.08.2015 2.24.2 Version released
cego 27.08.2015 2.24.2 Kurt Jaeger provided a modified scanner description to handle SQL keywords case insensitive
cego 27.08.2015 2.24.2 Modification for csmode, can be setup to ALL, STR ( just string compares are case sensitive ) or NONE now depending on the requirements
cego 26.08.2015 2.24.1 Version released
cego 26.08.2015 2.24.1 Added cleanup cache method to CegoTableCache and CegoQueryCache destructor. Improved formatting for cache list.
cego 23.08.2015 2.24.0 Version released
cego 21.08.2015 2.24.0 Changed CegoQueryCache from list struct to array struct to make it thread safe
cego 20.08.2015 2.24.0 QueryCache and TableCache are both working stable for single threaded requests. Still have to change some code in CegoQueryCache to make it threadsafe
cego 17.08.2015 2.24.0 TableCache implementation completed. Tests still ongoing
cego 09.08.2015 2.24.0 As a lower level cache option, started with TableCache implementation.
cego 07.08.2015 2.24.0 New version verified with SysMT. Fixes for query string generation done ( using _conjunctionList instead of _pPred to access also _viewConjunction ).
cego 05.08.2015 2.24.0 Added query cache info command to indicate max cache entry and max cache size
cego 04.08.2015 2.24.0 Several fixes on query cache implementation ( subselects still have not been handled correctly, query cleanup and reset handling ) Base check and gate are ok now
cego 03.08.2015 2.24.0 Another improvement for query cache. Instead of saving CegoField values in the query cache array, this has been reduced to storing CegoFieldValue values. Schema information is stored just one time for each query cache entry in the cacheSchema variable. This avoids memory consumption for the query cache.
cego 01.08.2015 2.24.0 Query Cache is basically working and actually meets expectations.
cego 01.08.2015 2.24.0 Proceed with QueryCache implementation. Basic admin functions ( show querycache, clean querycache ) working now, query content is stored to query cache
cego 28.07.2015 2.24.0 Started with query cache implementation
cego 26.07.2015 2.23.13 Documentation cleanup for Database XML description and SQL language description
cego 25.07.2015 2.23.13 Added gate D to gate check for checking modifying queries
cego 25.07.2015 2.23.12 Version released
cego 25.07.2015 2.23.12 Further patches in CegoTableManager::deleteDataTable, CegoFactor::evalReferences and CegoSelect::nextTuple for advanced query cache handling. All patches have impact on queries of the form
delete from t1 where a in ( select ....)
cego 25.07.2015 2.23.12 In CegoQueryHelper::evalPredicate fixed termination for INSUB- and NOTINB queries. There was no reset at the end of the evaluation, which might lead to open table cursors. In case of procedure queries, this might lead to locking problems.
Since the query is reset after evaluation, query caching is no more useful. This must be treated in an advanced way.
cego 21.07.2015 2.23.11 Version released
cego 20.07.2015 2.23.11 Added performance patch in CegoFieldValue. Value length up to STATICFIELDBUF size ( 100 bytes ) are handled using a static byte array. This saves expensive memory allocation calls in most cases. First very rough performances analysis has shown a performance improvement of about 5-10 percent
cego 19.07.2015 2.23.11 The local copy logix was shifted from CegoSelect::nextGroupedTuple to CegoGroupSpace::insertTuple.

Since the buffer page invalidation effect might also occur for plain ordering queries, local copies are also created now in CegoOrderSpace::insertTuple
cego 19.07.2015 2.23.10 Version released
cego 18.07.2015 2.23.10 Fix in CegoSelect::nextGroupedTuple.
For the grouping key values, a local copy of CegoFieldValue has to be created. Otherwise, grouping references might be invalate, which result in aborted grouping queries with strange error message ( No token available ) on client side.
For local copy creation, the CegoFieldValue::getLocalCopy method has been modified ( was not used until now ) This effect was observed in case of small buffer poolsize in combination with grouping queries on large tables. The probability of grouping key invalidation is higher then, because buffer pool pages are reloaded more often
cego 12.07.2015 2.23.9 Version released
cego 12.07.2015 2.23.9 The added performance fix also avoid infinite query loops for non-reference conditions, e.g. select a from t1 where 1 = 1;
cego 12.07.2015 2.23.9 Performance fix in CegoSelect::consolidateConjunctionList Inappropriate predicates are filtered and added to stack first. As a result, predicates are used for table join binding, where efficient tuple retrievel is ensured
cego 14.06.2015 2.23.8 Version released
cego 14.06.2015 2.23.8 More simplification done in CegoBTreeManager and CegoBTreeNode. Calculation of leaf node chain is now done much simpler. This ensures conistency and improves btree build up performance
cego 14.06.2015 2.23.8 Fix in CegoBTreeManager and CegoBTreeNode. The set up of the leaf chain was not done correctly. In case of CegoBTreeNode::addNode method calls, the follow up leaf information was not calculated correctly. This has tobe done in a similar way as for CegoBTreeNode::propagate. This effect might result in page leaks when an index is dropped. The current solution solves the problem but still has to be verified.
cego 13.06.2015 2.23.8 Fix for btree page count and btree page release. Some of the btree nodes have double references, which was not treated in the page count and page release algorithm
cego 12.06.2015 2.23.8 Changed default primary and secondary values for tableset definition command to the configured hostname. This simplies the define command in case of single node tableset configurations.
cego 08.06.2015 2.23.7 Version released
lfcbase 08.06.2015 1.6.2 Version released
lfcbase 08.06.2015 1.6.2 Small fix in Chain::visibleLength. Calculation my result in an infiite loop, if mbtowc returns zero. This has been stabilized
cego 08.06.2015 2.23.7 Fix in CegoClient for dump mode. BTrees habe not been dumped with the correct type ( primary, unique, normal )
cego 08.06.2015 2.23.7 Fix in CegoFieldValue for VARCHAR comparison. In case of exceeded string length for index values, the CegoFieldValue did not work correctly, which might lead to further problems. The comparison was changed to fix length compare. In this sense, strcmp was replaced by strncmp to with usage of the len value in the field value instance.
cego 05.06.2015 2.23.6 Version released
cego 05.06.2015 2.23.6 Added a fix in CegoTableManager::updateTuple. The core operation consists of a deleteDataTable and a insertDataTable method call. For the insertDataTable method call, the logging still was enabled. So in addition to an update operation, also an insert operation was done. In case of recovery operations, this lead to duplicate entries. Fix is pretty easy, just change isLogging parameter value for insertDataTable method from true to false.
cego 05.06.2015 2.23.5 Version released
cego 05.06.2015 2.23.5 Fix in CegoTableManager::insertDataTable, in case of constraint violation, btrees have not been cleaned up. This may result in inconsistent btree objects.
cego 04.06.2015 2.23.4 Version released
cego 03.06.2015 2.23.4 Fix in CegoSelect::buildJoinTables. After growStep match, growStep is now reset to 1. This avoids to add tables to the joinlist, which are still not treated for any appropriate join condition. As an effect of this bug, execution plan is not evaluated in an optimal manner, which might lead to long execution times
cegobridge 01.06.2015 1.0.1 Version released
cego 01.06.2015 2.23.3 Version released
cegobridge 01.06.2015 1.0.1 Fixes for MySQL import
cego 31.05.2015 2.23.3 Added uptime command for cgclt to show database uptime
cego 29.05.2015 2.23.3 Added pool uptime to buffer pool information, this indicates the database uptime
cego 23.05.2015 2.23.3 Several fixes for cgmkdb utility
cegobridge 18.05.2015 1.0.0 Version released
cego 18.05.2015 2.23.2 Version released
cego 18.05.2015 2.23.2 Added rowlimit argument to CegoDatabaseFormater::formatSelect method
cego 15.05.2015 2.23.1 Version released
cego 15.05.2015 2.23.1 Added some missing include files to be installed ( CegoException.h, CegoComparison.h, CegoXMldef.h, .. )
cego 14.05.2015 2.23.0 Version released
cegobridge 09.05.2015 1.0.0 First complex sample imported succesfull into MySQL ( SysMT DB )
cegobridge 05.05.2015 1.0.0 More work on MySQLFormater, procedure generation almost completed
cegobridge 03.05.2015 1.0.0 Completed application frame for MySQL,Oracle and Postgres.By using the API of cego-2.23, basic import and export for MySQL is already functional.
cego 03.05.2015 2.23.0 Completed CegoDatabaseFormater. Since the API has changed ( proagation of database formatting methods ), uplift to version 2.23 was required.
cego 01.05.2015 2.22.1 First approach of CegoDatabaseFormater completed including of all corresponding dbFormat methods in the required classes.
cegobridge 28.04.2015 1.0.0 initial entry
cego 28.04.2015 2.22.1 Started with implementation of CegoDatabaseFormater class. This class provides virtual format methods to be used for database specific export ( e.g. MySQl, Oracle, postgres )
lfcbase 27.04.2015 1.6.1 Version released
lfcbase 27.04.2015 1.6.1 Changed compile flag from -DENABLE_SYSLOG to -DDISABLE_SYSLOG. On default, syslog is enabled now
cego 26.04.2015 2.22.1 Code cleanup in CegoQueryHelper and CegoSelect, no functional changes
cegodbd 25.04.2015 1.3.0 Version released
lfcbase 25.04.2015 1.6.0 Version released
cego 25.04.2015 2.22.0 Version released
cego 25.04.2015 2.22
cego 25.04.2015 2.22.0 Fix in CegoQueryHelper::decodeFVL, terminating id was not checked correctly,which might lead to db crash in case of null value fields
lfcbase 25.04.2015 1.6.0 Added syslog support
cego 25.04.2015 2.22.0 Uplift to lfcbase 1.6 with syslog support
cego 25.04.2015 2.21.2 Further fix in CegoFieldValue::comp for correct null value ordering
cego 12.04.2015 2.21.1 Version released
cego 12.04.2015 2.21.1 Further fixes for btree handling. Some field value offsets have been corrected based on experiences with SAGE db import
cego 11.04.2015 2.21.1 Improved error messages for CegoLockHandler to indicate low level lock error messages from pthread calls
cego 10.04.2015 2.21.1 Added sudo command to cego rc script to run db as given user
cego 06.04.2015 2.21.0 Version released
cego 06.04.2015 2.21.0 Urgent fix in CegoFieldValue::comp method. New introduced null value comparison might result in a dump. Since, the new btree null value extension breaks specification to version 2.20, update to version 2.21 was required.
cego 06.04.2015 2.20.25 Version released
lfcbase 06.04.2015 1.5.11 Version released
cego 06.04.2015 2.20.25 Added multibyte character evaluation in CegoOutput ( requires lfcbase-1.5.11 ) to show visible chain length
lfcbase 06.04.2015 1.5.11 Added new method visibleLength to class Chain to get information about chain length with included multi byte characters
cego 04.04.2015 2.20.24 Version released
cego 04.04.2015 2.20.24 Fix on update query for referenced attributes in nested select like update t1 tx set b = ( select d from t2 where t1.a = c ); This table alias was not resolved correctly
cego 03.04.2015 2.20.23 Version released
cego 03.04.2015 2.20.23 SQL optimizer improvement was added. In case of select conditions with "a is null", not index or btree was used. Just for "a = null", the index was used. This has been fixed
cego 03.04.2015 2.20.23 Added fix for btree null value handling. A dedicated null value flag was introduced for each btree value ( class CegoBTreeValue ) to handle null values
croomios 15.03.2015 2.0.7 Message bubble redesign for chat window. This is still not the final solution, since there seems to be some challenge with the image resolution ...
croomadt 15.03.2015 2.0.2 Version released
croomadt 15.03.2015 2.0.2 Fix in CroomMessageView, duplicate messages appeared since unread messages are written two times to message cache ( also onPause )
croomios 08.03.2015 2.0.7 Added header for unread messages to message view. Reduced cell height to show more messages in the view
croomadt 01.03.2015 2.0.1 Version released
cego 27.02.2015 2.20.22 Version released
cego 27.02.2015 2.20.22 Fix in CegoQueryHelper::evalSelection for isAgg-case : int i =0; CegoField *pJF = 0; while ( i < jbufSize && pJF == 0 ) { CegoField* pJF = joinBuf[i].Find(*pF); ^^^^^^^^^^ if ( pJF ) { pF->setValue(pJF->getValue()); } i++; } The local variable lead an not optimized loop invariant, since the second condition predicate never terminates the invariant
cego 27.02.2015 2.20.22 Fix in CegoFactor::evalFieldValue : For the QUERY case, the select instance was not reset. Since the query starts from a undefined point, this might lead to "list position exceeded" exceptions
croomadt 21.02.2015 2.0.0rc2 Version released
cego 16.02.2015 2.20.22 Added command line parameter validation for poolsize, numdbthread, numadminthread and numlogthread parameters
cego 15.02.2015 2.20.21 Version released
cego 15.02.2015 2.20.21 Fixes for cego rc script
cego 15.02.2015 2.20.20 Version released
cego 15.02.2015 2.20.20 Added fork+setsid system calls to daemon mode
croomadt 09.02.2015 2.0.rc1 Croom Android Cient first release candidate. This version works with croom server 2.0
croomsrv 06.02.2015 2.0.0 Heavy work on croom version 2.0.0 with web integration
cego 13.01.2015 2.20.19 Version released
cegojdbc 28.12.2014 1.5.5 Treated exception for exceeded blob pages
cego 28.12.2014 2.20.19 Added small fix for blob handling ( treat exception for exceeded pages )
cegojdbc 27.12.2014 1.5.4 Version released
cegojdbc 27.12.2014 1.5.4 Added methods for blob handling with input stream
croomsrv 18.12.2014 2.0.0 Started with user admin panel implementation
croomsrv 17.12.2014 2.0.0 Started Vaadin based implementation, complete code copy to eclipse project
cego 06.12.2014 2.20.18 Version released
cego 05.12.2014 2.20.18 Added more detailed log information for tableset import and export operation
cego 16.11.2014 2.20.17 Version released
cego 15.11.2014 2.20.17 Change for primary and secondary host evaluation.
Instead if comparing gethostbyname, the defined dbhost value is used.
This makes sense, especially, if the configured dbhost does not match with the result value of gethostbyname ( e.g. is multiple hostnames are configured on a database server )
cegodbd 04.11.2014 1.2.9 Version released
cegodbd 04.11.2014 1.2.9 Modifications in Cego.xs to support newer releases of DBI
croomios 27.10.2014 1.1.1 Catched pictures messages with no title ( msgtext == nil )
croomsrv 27.10.2014 1.1.2 Removed MSGCONFIRM message from server, since this message is actually not used and may confuse the protocol.
croomadt 27.10.2014 1.1.3 Added status thread for status updates in message view
Layout improvements in message view.
Synchronizing improvements in request handler class
croomsrv 26.10.2014 1.1.1 Version released
croomadt 26.10.2014 1.1.2 Version released
croomadt 26.10.2014 1.1.2 Message bubble correction to synchronize with iOS bubble design
croomsrv 26.10.2014 1.1.1 Improvements regarding session cleanup
croomadt 26.10.2014 1.1.2 Improvements regarding session recovery
croomadt 24.10.2014 1.1.2 Fix in CroomMessageView, messages are just added locally, if confirmation to server was succesful
croomsrv 24.10.2014 1.1.1 - Fix in view croom_unreadmsgview, instead of msgid_send, msgid_confirmed must be evaluated
- Optimization push message service, added rowlimit 10 to select to avoid pushing too many messages with one service request
croomadt 24.10.2014 1.1.0 Version released
croomsrv 24.10.2014 1.1.0 Version released
cego 24.10.2014 2.20.16 Version released
croomsrv 23.10.2014 1.1.0 Small fix for pollUnread service request ( updated msgrec attribute for croom_unreadmsgview query )
croomadt 23.10.2014 1.1.0 Introduced class CroomForground for proper foreground / background state handling.
Messsage exchange seems to be stable now also with images
croomadt 22.10.2014 1.1.0 Improvements for message view with images
croomios 21.10.2014 1.1.0 Many improvements regarding stabability and design
Added message cache cleaner
cego 19.10.2014 2.20.16 Added utility function blobsize for retrieving blob size information
croomadt 19.10.2014 1.1.0 Added basic support for media message transfer
Lift up to version 1.1.0, since this feature uses new server protocol
croomios 19.10.2014 1.1.0 Many patches added to support media messages
Since this is a protocol expansion, version set up to 1.1.0
croomios 18.10.2014 1.0.4 More work on message view controller to support media messages
cegojdbc 18.10.2014 1.5.3 Version released
cego 18.10.2014 2.20.15 Version released
cego 18.10.2014 2.20.15 Added restricted acces for JDBC information requests
The jdbc role now is required to perform any JDBC information requests.
cego 18.10.2014 2.20.15 A problem occured with inner and outer joins if the same table occurs two times or more in the query
For the CegoAttrComp class, the tablealias name additionally is stores now to evaluate, if the compare is appripriate for the corresponding table
cegojdbc 18.10.2014 1.5.3 Fixes for CegoBlob added
croomsrv 17.10.2014 1.1.0 Added image message handling to the server
This feature also requires blob handling of the cego database
Patches to the JDBC driver have been added ( CegoJDBC Vesion 1.5.3 )
cegojdbc 16.10.2014 1.5.3 Cleanup of several unimplemented methods in CegoCallableStatement
croomadt 16.10.2014 1.0.1 Version released
croomadt 16.10.2014 1.0.1 Added message cache option to settings menu
croomios 15.10.2014 1.0.4 Added message cache with cache expire setting
cego 15.10.2014 2.20.15 Small optimization in CegoDisManager::updateLocalDataTable Instead of requesting a new lock for the commitment phase, the lock we already have is also used for the commit in case of forecedTransactions ( update case ).
This ensures, that the forced transaction can be done without risking to not obtain the lock for the corresponding table again.
croomios 15.10.2014 1.0.3 Bubble form and color improvements
Lightening background color or all views
croomios 15.10.2014 1.0.3 Added transaction confirmation boxes for user management
croomsrv 15.10.2014 1.0.1 Improved exception handling and error messages
croomsrv 14.10.2014 1.0.0 Version released
croomadt 14.10.2014 1.0.0 Version released
croomios 13.10.2014 1.0.3 Color and background adjustments for message bubbles
croomios 13.10.2014 1.0.3 Code cleanup and further improvements for message view
croomadt 12.10.2014 1.0.0 Improved scrolling to end by using
instead of
croomsrv 12.10.2014 1.0.0 More work on croom documentation
croomios 11.10.2014 1.0.2 Fixes for message view ( orientation, input message box with multi lines )
croomadt 11.10.2014 1.0.0 More improvements for message view status field
croomadt 10.10.2014 1.0.0 Improvements for home view to handle connection errors
Connection establishment made by a dedicated connection thread
croomsrv 10.10.2014 1.0.0 Added msgid_sent and msgid_confirmed attributes to table croom_user2room to ensure correct message delivery to clients ( non repeating and non lost messages )
After restart, the values for the corresponding user are synched ( set msgid_sent = msgid_confimed )
croomios 10.10.2014 1.0.2 More fixes on Message box input view to handle line wrapping correctly
croomios 09.10.2014 1.0.2 Improved state handling for background and foreground mode
If app goes to background while room was entered, the room is left now and entered again by dedicated enterBackground and enterForeground methods in CroomMessageViewController
croomadt 08.10.2014 1.0.0 - Improved state handling for different application states ( foreground, background, room entered )
- Added local notification for message notification, if app is in background
croomsrv 07.10.2014 1.0.0 Started with documentation
croomios 06.10.2014 1.0.1 Added autoconnect toggle switch to configuration view.
croomios 06.10.2014 1.0.0 Further improvements and code cleanup for messenger view
croomios 06.10.2014 1.0.0 Added session recovery to recover automatically from broken connections
croomios 05.10.2014 1.0.0 More work and improvements for multiline message input view
croomios 04.10.2014 1.0.0 Added multiline editing view for message input
croomios 03.10.2014 1.0.0 Added asynchronous update thread for room view
croomadt 03.10.2014 1.0.0 Message exchange between ios and android stable now
croomios 02.10.2014 1.0.0 Changed message text coding to base64. This seems to be useful to handle messages also for the android world
sysmt 30.09.2014 5.2.0 Update to Vaadin 7.3.2
croomadt 30.09.2014 1.0.0 Added CroomMessageCache class to store retrieved message locally. More work on messenger view to show message sender and message ts
croomadt 28.09.2014 1.0.0 Basic message exchange works now ( also tested between iOS and Android )
croomadt 26.09.2014 1.0.0 First connection to croom server established
croomadt 26.09.2014 1.0.0 Completed Settings View
croomadt 25.09.2014 1.0.0 First analysis of Eclipse based ADT finished. Draft for croom application prototype including tab view, list view and messenger view completed
croomadt 25.09.2014 1.0.0 Initial entry
croomsrv 22.09.2014 1.0.0 Confuguration of log4j logging, started croom server beta test on croom.lemke-it.com
croomios 22.09.2014 1.0.0 Adaptions for iPhone 4s
cegojdbc 21.09.2014 1.5.2 Version released
cegojdbc 21.09.2014 1.5.2 Added pseudo implementation for CegoConnection.getTypeMap to satisfy DBPool implementation of snaq.net
croomsrv 21.09.2014 1.0.0 Added db connection pool implementation from snaq.net
croomios 20.09.2014 1.0.0 Added local notification
croomsrv 18.09.2014 1.0.0 view corrections and additional information for roomforuser service
croomios 18.09.2014 1.0.0 More information added to user room view ( number of users, number of unread messages ), improvements of message view controller
croomios 16.09.2014 1.0.0 Added services for user modification and user deletion
croomios 15.09.2014 1.0.0 - Added message encoding for emoticons and umlaute
- Improved network connection setup including UIActivityIndicator
- Improved message view layout
croomios 15.09.2014 1.0.0 First successful deployment and test on IPhone5 device
croomios 14.09.2014 1.0.0 Improved user admin panels, added additional information to home mask
croomsrv 14.09.2014 1.0.0 Created croom tableset on vserv2
cego 14.09.2014 2.20.14 Version released
cego 14.09.2014 2.20.14 - Fix in CegoQueryHelper::decodeFVL to treat also decodings for field value list in switched order ( btree or index fvl ) - Fix in CegoAction::execIndexCheck to conform to new object comparison in CegoDatabaseManager::ObjectRecord - Fix in CegoTableManager::deleteDataTable to check for inappropriate AttrCond before executing tablecursor setup
cego 13.09.2014 2.20.14 Fix in CegoDatabaseManager::Object::operator == Index comparisons corrected ( index can either match uindex, pindex or index, btree can either match ubtree, pbtree or btree )
croomios 13.09.2014 1.0.0 Added App and Launch Icon, added services for pwd setting, completed implementation of message delivery
croomios 12.09.2014 1.0.0 More work in user and group administration
croomsrv 12.09.2014 1.0.0 Added AES encryption code from http://www.bouncycastle.org to project
croomios 12.09.2014 1.0.0 Added AES encryption code to project
croomios 12.09.2014 1.0.0 More work on user and room administration views
croomios 11.09.2014 1.0.0 Completed symmetric message protocol for room chat sessions. Messages are now delivered to crooom server but also messages are received via push requests
croomios 11.09.2014 1.0.0 More work on smooth message exchange parameter settings.
croomios 09.09.2014 1.0.0 Analysis and work on iOS multithreading for asynchronous message delivery. Basically, messages can be delivered from croom server and are received from a croomios dedicated thread.
cego 09.09.2014 2.20.13 Version released
cego 09.09.2014 2.20.13 Fix in CegoQueryHelper::evalAttrCond. In case of some table ordering, the attributes have been switched and the comparison was not made correctly ( LESS_THAN, MORE_THAN, LESS_EQUAL_THAN, MORE_EQUAL_THAN ). This has been treated now.
croomsrv 06.09.2014 1.0.0 More work on database modelling
croomios 06.09.2014 1.0.0 Added segue handling handling from user view to message view
croomios 05.09.2014 1.0.0 First working request (USERLIST ) on UITableViewController with response from app server and database
croomsrv 05.09.2014 1.0.0 More work on XML modeling and RequestHandler
croomsrv 04.09.2014 1.0.0 Started with db modeling for croom database
croomsrv 03.09.2014 1.0.0 First runnable prototype, which servers proom requests. Also tested with OpenJDK on FreeBSD 9.3
croomios 03.09.2014 1.0.0 Started with Xcode project for iPhone client
croomios 03.09.2014 1.0.0 Added XML handling classes to iPhone client ( derived APXML by Arash Payan, https://github.com/arashpayan/apxml )
croomsrv 03.09.2014 1.0.0 Started with Xcode project for iPhone client and with Eclipse project for Java based server implementation
croomsrv 03.09.2014 1.0.0 Initial entry
cego 31.08.2014 2.20.12 Version released
cego 27.08.2014 2.20.12 Recovery added for check constraints and foreign keys
cego 26.08.2014 2.20.12 Corrections for btree recovery, btree creation was not performed correctly during tableset recovery. Tableset autocorrect mode is enabled on default now ( by define tableset )
sysmt 20.08.2014 5.2.0 Added constraint check for system set admin panel
sysmt 19.08.2014 5.2.0 Added duplicate check for thread group admin panel
sysmt 18.08.2014 5.2.0 Added valo theme support
sysmt 04.08.2014 5.1.9 Added workaround for Vaadin 7.2.x tabsheet bug.
sysmt 04.08.2014 5.1.9 Added target sid / set information for clone confirmation panel.
sysmt 07.07.2014 5.1.8 New ticket trace URL for tabsheet problem http://dev.vaadin.com/ticket/14114
cego 29.06.2014 2.20.11 Version released
cego 29.06.2014 2.20.11 Some code cleanup and corrections in sample/gate mkdb scritps
sysmt 22.06.2014 5.1.8 Tabsheet problem still occurs with Vaadin Version 7.2.3
sysmt 21.06.2014 5.1.8 Calendar query was fixed and modified to catch complete set of mt entries for corresponding month matrix. Two database procedures have been introduced ( lowCal and highCal ) for mt boundary calculation. In combination with Oracle, some performance improvements have been observed.
sysmt 18.06.2014 5.1.8 Added refreshAll method to SysMTMaintain::dataInitial to clear edit area after maintain panel is selected
cego 14.06.2014 2.20.10 Version released
lfcbase 14.06.2014 1.5.10 Version released
sysmt 14.06.2014 5.1.8 TabSheet problem is tracked with Vaadin ticket #14012
sysmt 14.06.2014 5.1.8 Catched invalid file exception in SysMThread Document Uploader
sysmt 14.06.2014 5.1.8 Update to Vaadin 7.1.5. Vaadin 7.2.2 available, but there are some problems regarding disabled widgets in SysMTThread - AdvancedTabSheet ( Tab sheet can not be enabled after thread selection )
lfcbase 01.05.2014 1.5.10 Fixes in strptime.c for correct date handling
cego 20.04.2014 2.20.10 Small improvements for role management
lfcbase 20.04.2014 1.5.10 Small adaptions in class Net for MinGW32
cego 13.04.2014 2.20.9 Version released
cego 13.04.2014 2.20.9 Fixes on btree correction after crash recovery
cego 13.04.2014 2.20.9 Added btree correction to CegoDistManager::correctTable method
sysmt 10.04.2014 5.1.7 Update to Vaadin 7.1.13
sysmt 06.04.2014 5.1.7 Elimination of open cursor leaks by calling expicit close method,e.g Statement s = con.createStatement(); s.execute("delete from sysmt_bgright where bgid = " + _bgid); s.close(); Added missing rs.close() and s.close() in SysMTSystemSetInfo::getSidsForSet
cego 06.04.2014 2.20.9 Corrections were made for FreeBSD rc-script, cgadm online help completed
cego 05.04.2014 2.20.8 Version released
cego 04.04.2014 2.20.8 Corrections for recovery handling added regarding user functions
cego 03.04.2014 2.20.8 Corrections where made for recovery handling regarding invalidated index objects
cego 03.04.2014 2.20.8 Fix in CegoBTreeNode::shiftEntries. Replaced memcpy with memmove, since for Linux, memcpy does not treat overlapping areas.
cego 23.03.2014 2.20.8 Small fixes regarding tableset recovery ( handling of invalidated index objects )
cego 16.03.2014 2.20.7 Added patch for CegoBTreeCursor::getNext In case of open transactions, the cursor did not handle the affected entries correctly which might result in an infinite cursor loop.
sysmt 05.03.2014 5.1.7 Active group handling for thread management was changed. Please note : This resulted in a change of the database procedure newThread but also in the view sysmt_threadview. Reload of this objects is required.
sysmt 01.03.2014 5.1.6 Added thread standard search to filter by shortdesc
sysmt 01.03.2014 5.1.6 Small patch in SysMTDevice to avoid null pointer exception, Added filter expansion ( status and remind ) to thread search panel search by thread group
cego 25.02.2014 2.20.6 Version released
cego 24.02.2014 2.20.6 Added fix in CegoFunction::evalFieldValue for SUBSTR case to avoid stringbuf exceed exception. start and len parameters are set to string boundaries in case of invalid user input
cego 23.02.2014 2.20.6 Added csmode and qescmode flags for cego xml initialization Exception message fix in CegoFactor::evalFieldValue
cego 21.02.2014 2.20.5 Version released
cego 20.02.2014 2.20.5 Fix in CegoDatabaseManager::ObjectRecord::operator == , tabSetId added to comparison. This bug may lead to object exists messages in case of multi tableset configurations, where objects with the same name exists in several tablesets.
sysmt 19.02.2014 5.1.5 Patch in SysMTSystemSet and SysMTSystemService : Just sets and services can be assigned to systems, which are reachable for the user.
sysmt 18.02.2014 5.1.5 Added new class SysMTSystemService to move systems to other services
sysmt 16.02.2014 5.1.4 Update to Vaadin 7.1.11
cego 14.02.2014 2.20.4 Version released
lfcxml 13.02.2014 1.1.7 Version released
lfcbase 13.02.2014 1.5.9 Version released
lfcbase 12.02.2014 1.5.9 Fixed some compiler warnings for sample code
cego 12.02.2014 2.20.4 - Added hitrate calculation to buffer pool information - Added transitive role removal for all users, if a role is dropped.
lfcbase 12.02.2014 1.5.9 Expanded Chain constructor for double values to specify format string
sysmt 11.02.2014 5.1.4 Added session invalidation in case of database connection lost to avoid sustained error mails from the refresh listener ( SysMTUI )
cego 11.02.2014 2.20.4 Added many improvements to curses based administration frontent ( cgadm ) Now tableset, user and role administration can be done supported by an curses based GUI. Null value check added for "alter table" command, so in case of modification of an attribute to be not null, the table entries are checked for it ( new method CegoTableManager::checkNullValue )
cego 04.02.2014 2.20.4 Cleanup in CegoObjectManager ( introduced method getHashPageId) Fixes for table altering : In case of renaming table attributes, the corresponding key entries for index, btrees, fkey and checks have not been modified.
cego 01.02.2014 2.20.3 Version released
cego 01.02.2014 2.20.3 Fixes added in CegoBufferPool::writeAndRemoveTabSet and CegoBufferPool::writeCheckPoint so just pages are written, which are occupied. Otherwise, this may lead to system crash, if pages which have been released ( marked as NOT_OCCIPIED ) and written to disk.
cego 31.01.2014 2.20.3 More fixes for btree added. In some cases, still some btree pointers were not correct :(
sysmt 29.01.2014 5.1.4 Check for log message length before adding it to log thread log
cego 28.01.2014 2.20.2 Version released
cego 28.01.2014 2.20.2 Fixed a problem in CegoFileHandler::allocatePage If a page is allocated with doAppend == false, the append pointer is reset. Otherwise, freed pages are never reallocated again and sustained create/drop operations may lead to page exceed.
sysmt 27.01.2014 5.1.4 Added idle time management to master class SysMTUI. Since the Requester class polls periodically the server, idle time management has to be done inside the application. All clicks are already catched by ClickLogger class, so this extension was quite easy.
cego 26.01.2014 2.20.1 Version released
sysmt 24.01.2014 5.1.4 Fixed a null pointer exception for thread notification mails, where mail address is not configured Spelling correction for Maintenance in Main Menu
cego 24.01.2014 2.10.1 Fix for btree objects. In some cases, bufferUnfix operations have not been done correcty, which might result in corrupted btree objects.
sysmt 22.01.2014 5.1.3 Added a patch for calendar view. The MT downtime have not been shown correctly.
sysmt 21.01.2014 5.1.2 Patches added for Thread Log Table. The ordering for LoggedAt was not correct, since the column type was String and not Date. Changed table refresh by setting container source.
cego 20.01.2014 2.20.0 Version released
lfcxml 20.01.2014 1.1.6 Version released
sysmt 20.01.2014 5.1.2 Spelling correction for maintenance panels
lfcxml 19.01.2014 1.1.6 Small patch has been added to XMLSuite to catch exception in case of xml string buffer exceeds ( Thanks, David )
cego 19.01.2014 2.20.0 The CegoBTreeManager::deleteBTree method has been redesigned. In case of non-unique index objects, it might happen, that the corresponding index entry was not found ( if the value is spreaded over several leaf nodes ) This problem is fixed with the new method implementation
cego 19.01.2014 2.20.0 Added relevance attribute value for btree object. This allows to make a better decision about the relevance of a btree object which results in an optimized query execution plan.
sysmt 13.01.2014 5.1.2 Device management panel has been improved The component edit panel has been redesigned to edit component units in table
sysmt 13.01.2014 5.1.2 Catched null pointer exception for system core panel ( role value )
sysmt 13.01.2014 5.1.2 Added log entry after thread email notification
cego 05.01.2014 2.19.14 Version released
sysmt 04.01.2014 5.1.1 Several improvements for panel refresh Fixed a connection leak in SysMTCatalog
cego 04.01.2014 2.19.14 Functional expansion for aggregation queries to support aggregation in functions e.g. select f1(sum(a)) from t1;
sysmt 16.12.2013 5.1.1 Small color and size improvements for header layout Modified maintainance panel in a way, that the detail info panel is cleared after a search has executed. This avoids irritations for the users.
sysmt 08.12.2013 5.1.1 Add time label to header information Several tooltips added for user support
sysmt 05.12.2013 5.1.0 Small modifications on datamodel regarding service catalog management
cego 23.11.2013 2.19.13 Version released
cego 22.11.2013 2.19.13 Further corrections for CegoDatabaseManager::useObject method numTries was not increased correctly..
cego 21.11.2013 2.19.13 Optimization for CegoTableManager::deleteDataTable The index evaluation was not correct, so the faster deletion strategy for tables without index objects was not used.
sysmt 17.11.2013 5.0.0 Release candidate 5 ready
cego 16.11.2013 2.19.12 Version released
cego 15.11.2013 2.19.12 Fixed a lock handling bug in CegoDatabaseManager An illegal V() operation was called in case of eceeding lock counts.
cegodbd 02.11.2013 1.2.8 Version released
cegodbd 02.11.2013 1.2.8 Added quote escape handling to the bind method, so quotes can be used in string variables as normal characters.
cego 01.11.2013 2.19.11 Version released
cego 31.10.2013 2.19.11 Fix in CegoBTreeCursor. Since the cursor just reads, the bufferUnfix should be used with isDirty = false
cego 30.10.2013 2.19.11 Adjustment of some defualt parameters ( MAXFIXTRIES = 30, all semaphore numbers increased to 1021 )
cego 27.10.2013 2.19.10 Version released
cego 24.10.2013 2.19.10 Further fixes for btree added. Pages for btrees are fixed now in NOSYNC-mode ( instead of SYNC ) which avoids forced checkpoints. Normally this is just relevant for large index objects. Fix for index cleanup after abort index creation added.
cego 23.10.2013 2.19.9 Version released
cego 23.10.2013 2.19.9 Small fix in CegoFieldValue:castTo. IN case of a cast from null to any other value, the result must again null ( Constraint _pVal == 0 and _type != NULL_TYPE MUST be false )
cego 22.10.2013 2.19.8 Version released
cego 22.10.2013 2.19.8 Fix for btree cursor added
cego 22.10.2013 2.19.8 Fixes for null values handling in several inbuild functions ( date2str, date2int, etc. )
cegodbd 20.10.2013 1.2.7 Version released
cego 20.10.2013 2.19.7 Version released
cego 20.10.2013 2.19.7 More work on btree leaks. Now the most common operations seems to work fine.
cegodbd 19.10.2013 1.2.7 Fix for trailing parameters like select a from t1 where a = ? Without a closing semicolon, the parameter was not resolved correctly. Workaround : select a from t1 where a = ?;
cego 19.10.2013 2.19.7 Fix for BTree cursor. Some conditions still have not been completely implemented ( MORE_THAN ) Furthermore, the getNext method did not collapse correctly for all cases.
lfcbase 13.10.2013 1.5.8 Version released
lfcbase 13.10.2013 1.5.8 Small bug fix in configure.ac
cegojdbc 12.10.2013 1.5.1 Driver released
cegojdbc 03.10.2013 1.5.1 If the ResultSet was not properly closed by the user, a session leak occurs. So if a valid Result Set exits for an executed statment, it is closed now in any case in CegoStatement::close()
cegojdbc 07.09.2013 1.5.0 Version released
cegojdbc 06.09.2013 1.5.0 Added charset option to URL string. This allows to use a dedicated charset for character encoding or UTF-8 as default
cego 04.09.2013 2.19.6 Version released
cego 04.09.2013 2.19.6 Added join optimizer modification. The join table order now is calculated in a better way. First, tables are joined, where an index can be used to join. Index on constants are just used, if no join index could be found.
cego 02.09.2013 2.19.5 Version released
lfcbase 02.09.2013 1.5.7 Version released
lfcbase 02.09.2013 1.5.7 Change in Tokenizer class. Quote character argument was removed, since it does not really seems to make sense. It has lead to problems for cego in some cases. All cases can be handled with the escape character
lfcbase 01.09.2013 1.5.7 Fix in NetHandler class. In NetHandler::readMsg, the reallocation of the message buffer was not done correctly in some cases.
cego 31.08.2013 2.19.5 Removed backslash escape sequence detection in scanner CegoAction::nextChar Backslashes are now read as normal characters
cego 14.08.2013 2.19.4 Version released
cego 13.08.2013 2.19.4 Small fix for function date2str. If used in combination with sysdate constant, the return value was null. (e.g. date2str(sysdate, '%m');
cego 07.08.2013 2.19.3 Got the billion :) CGCLT > select count(*) from t1; +-----------+ | AGGR | | count(*) | +-----------+ |1000187769 | +-----------+ 1 tuples ok ( 796.603 s )
cego 06.08.2013 2.19.3 Version released
cego 04.08.2013 2.19.3 Added page write to CegoFileHandler::claimPage at the end of the method. This avoids a release of preallocated system and temp pages if the database is started with the cleanup option.
cego 04.08.2013 2.19.2 Big data test to load about 1 billion tuples into one table. Still running, half the way done CGCLT > select count(*) from t1; +-----------+ | AGGR | | count(*) | +-----------+ | 500187769 | +-----------+ 1 tuples ok ( 366.849 s )
cego 29.07.2013 2.19.2 Version released
cego 29.07.2013 2.19.2 Added auto correct switch to enable / disable index auto correction at tableset startup.
cego 28.07.2013 2.19.1 Log Correction : HashRule = ( (fileId+1) * (fileId+1) * (pageId+1)) % _pageNum
cego 27.07.2013 2.19.1 Improved hash calculation for bufferpool slots. HashRule = ( 2 * (fileId+1) * (pageId+1)) % _pageNum This leads to a better distribution in case of many managed tablesets
cego 27.07.2013 2.19.1 Contraint improvements on invalid index entries. Invalid index tables ( which may occur after a system crash ) are no longer ignored. Rather they are checked and any insert, update or delete operation for corresponding tables results in an error. This avoids invalid table entries ( eg. duplicate indexes ) and forces an index rebuild.
cego 25.07.2013 2.19.1 Some work on documentation
cego 25.07.2013 2.19.1 Added path attributes for sys and temp file to the database xml. Now file names can be defined now individually.
cego 24.07.2013 2.19.0 Version released
cego 24.07.2013 2.19.0 Several improvements for tableset creation and management added. Simplified naming for system and tempory database files makes this incompatible to 2.18.x
lfcbase 24.07.2013 1.5.6 Version released
cego 23.07.2013 2.18.12 Further improvements on tableset management. A default application datafile is added now with the define command in a more comfortable way.
cego 22.07.2013 2.18.12 Fix in CegoTableManager::createTableSet There is no need to init pages for system and temp space via bufferFix The initDataFIle method already has done this job. Since the tableset is still not online, the bufferFix method can lead to problems ( if a checkpoint is forced )
cego 21.07.2013 2.18.12 Improvements regarding tableset management ( define tableset attributes )
lfcbase 21.07.2013 1.5.6 Introduced class Directory for all directory operations
cego 17.07.2013 2.18.11 Version released
cego 10.07.2013 2.18.11 Added type cast for fixed to string ( CegoFieldValue::castTo )
cegodbd 09.07.2013 1.2.6 Version released
cegodbd 09.07.2013 1.2.6 Changed Makefile.pl to dynamic library linking
cego 08.07.2013 2.18.10 Small improvements on CegoDatabaseManager for object lock handling. A timeout error message is now returned, if the corresponding object can not be accessed during the specified timeout interval ( DBM_LOCKDELAY * DBM_MAXLOCKTRIES msec )
sysmt 06.07.2013 5.0.0 Preparation for customer specific reports
sysmt 05.07.2013 5.0.0 Added user audit table to log several user actions
cegodbd 04.07.2013 1.2.5 Add query string normalization to alloq queries with or without trailing semicolon
sysmt 03.07.2013 5.0.0 More work on Oracle migration. Table attribute uid has been renamed to usrid since a naming conflict occured with the Oracle internal uid function
sysmt 02.07.2013 5.0.0 Started with Oracle database support
sysmt 27.06.2013 5.0.0 Integration of SysMT Engine for batch schedules Integrated as a HttpServlet to the existing SysMT project. ( regarding the hints of Biagio, thanks my friend ;) )
cegodbd 24.06.2013 1.2.4 Update with xsi-patch by Kurt Jaeger aka pi
sysmt 24.06.2013 5.0.0 Several fixes for panel searches
sysmt 23.06.2013 5.0.0 Added some adaptions for right management
cego 22.06.2013 2.18.9 Version released
sysmt 21.06.2013 5.0.0 Added other admin panel
sysmt 20.06.2013 5.0.0 Added further search for system panel ( by status, by role, by requested )
cego 19.06.2013 2.18.9 Fixes for count aggregation. Return type was not evaluated correctly for all queries. Changed return type for count aggregation from integer to long
sysmt 17.06.2013 5.0.0 Added system statistics panel
sysmt 17.06.2013 5.0.0 Input hardening for device management done
sysmt 17.06.2013 5.0.0 Input hardening for service management done
sysmt 16.06.2013 5.0.0 Admin area clean. Hardening for bgroup, user, tgroup and system set administration
sysmt 16.06.2013 5.0.0 Renaming of data and money base functions ( database independent )
sysmt 15.06.2013 5.0.0 Translation of documentation to english
sysmt 13.06.2013 5.0.0 More work on documnetation. Translation to english for several sections
sysmt 12.06.2013 5.0.0 More work on documentation ( admin and system management )
sysmt 11.06.2013 5.0.0 More work on user documentation ( service and system management )
sysmt 10.06.2013 5.0.0 More work on user documentation ( operation management )
sysmt 09.06.2013 5.0.0 Database hardening regarding null values Cleanup of super classes SysMTDataPanel and SysMTAdminPanel
sysmt 07.06.2013 5.0.0 Stabilization of admin masks ( User Management )
sysmt 05.06.2013 5.0.0 Added allocation table to catalog order panel. Now devices can be selected during system ordering process
lfcxml 05.06.2013 1.1.5 Small fixes for build process regarding sample build ( xmltest ) Library include path was missing, which lead to build problems on some platforms ( FreeBSD )
cego 03.06.2013 2.18.8 Version released
cego 01.06.2013 2.18.8 Added type evaluation and propagation for cego internal and user functions. Datatype was string(20) for all functions. Afffected Files: CegoFunction and CegoProcedure
lfcxml 01.06.2013 1.1.4 Removed copyright header with old FSF adress
lfcbase 01.06.2013 1.5.5 Adaptions for MinGW compilation. Removed copyright header in files with old FSF adress
lfcbase 31.05.2013 1.5.5 Made some adaptions for mingw build process. Did not really get it complete. Windows is an ugly planet...
sysmt 29.05.2013 5.0.0 Work in SAP Instance module to make configuration information editable ( instnr, smd, etc )
sysmt 29.05.2013 5.0.0 Added system set view
sysmt 29.05.2013 5.0.0 Small design tuning for maintain panel ( approval table, colors ) Added exception handling for admin panels.
cegodbd 28.05.2013 1.2.3 Version released
cegodbd 28.05.2013 1.2.3 Added null value handling to bind procedure Sample : bind_param(1, undef, SQL_VARCAHR) to bind a null value to the first place holder.
sysmt 28.05.2013 5.0.0 Added authorization handling for several panels
sysmt 26.05.2013 5.0.0 Completed postgres migration includeing sysmtimp and sysmtexp Continued with System management implementation
cego 25.05.2013 2.18.7 Return type cast added to CegoProcedure::getretVal to return the appropriate return type.
cego 22.05.2013 2.18.6 Version released
cego 22.05.2013 2.18.6 Added function str2date for dynamic conversion of string to date values. The date function is limited to constants.
cego 22.05.2013 2.18.5 Version released
cego 21.05.2013 2.18.5 Fix in CegoFunction::clone method The clone method did not treat user defined functions, which might lead to database crash in some cases, e.g. SELECT mid, shortdesc, status, dateTime(mtfrom), dateTime(mtto), dateTime(downfrom), dateTime(downto) FROM sysmt_mt WHERE ( dateMonth(downfrom) = 5 and dateYear(downfrom) = 2013 ) or ( dateMonth(downto) = 5 and dateYear(downto) = 2013 );
sysmt 20.05.2013 5.0.0 Started with postgres mapping. Since the attribute name "ctid" ( used in SysMT for component type id ) is reserved for postgres internal use, it has to be renamed to "coid" User admin, Group admin, Location management alread mapped
cego 20.05.2013 2.18.4 Version released
dragon 20.05.2013 1.3.10 Version released
cego 20.05.2013 2.18.4 Include path adaption
dragon 20.05.2013 1.3.10 Include path adaption
lfcxml 19.05.2013 1.1.3 Version released
lfcbase 19.05.2013 1.5.4 Version released
dragon 19.05.2013 1.3.9 Version released
cegodbd 19.05.2013 1.2.2 Version released
cego 19.05.2013 2.18.3 Version released
sysmt 17.05.2013 5.0.0 Added user search function to maintain panel
cegodbd 16.05.2013 1.2.1 Adaptions for renamned lfcbase class
cego 16.05.2013 2.18.2 Adaption for changed lfcbase base class. Added shared library version information
cego 16.05.2013 2.18.2 Adaption for changed lfcbase base class. Added shared library version information
lfcxml 16.05.2013 1.1.2 Adpations for lfcbase name change. Added shared library version information
lfcbase 16.05.2013 1.5.3 Due to naming collisions with some linux libraries, a name change was made to lfcbase. Also shared library verion information was added
sysmt 16.05.2013 5.0.0 More work on maintain searches ( by mid, my ticket
sysmt 16.05.2013 5.0.0 More work on device management, added serial number attribute, added device searches
sysmt 16.05.2013 5.0.0 Added user search panel to maintain management Design optimizations for maintain approval
sysmt 15.05.2013 5.0.0 Design optimization on maintain panel
lfcbase 15.05.2013 1.5.2 Several fixes for the new build process ( e.g. union semun detection )
cego 15.05.2013 2.18.1 Added several AC_CHECK_LIB macros to configure.ac
lfcbase 13.05.2013 1.5.1 Fix for regex usage in Matcher class. New build was confused with dedicated regex implementation ( just needed for WIN32 compiles )
cego 13.05.2013 2.18.0 Rework of autoconf build process Version released
lfcxml 13.05.2013 1.1.0 Version released
lfcbase 13.05.2013 1.5.0 Version released
cego 13.05.2013 2.18.0 Adaptions made for current autoconf support. The configure.ac and Makefile.am files have been modified.
lfcxml 13.05.2013 1.1.0 Adaptions made for current autoconf support. The configure.ac and Makefile.am files have been modified.
lfcbase 13.05.2013 1.5.0 Adaptions made for current autoconf support. The configure.ac and Makefile.am files have been modified.
lfcbase 13.05.2013 1.5.0 Complete rework of the autoconf configuration files. Just configure.ac and Makefile.am had to be defined Support for libtool integrationto build executables and libraries
sysmt 11.05.2013 5.0.0 Added conflict table for maintain management
sysmt 11.05.2013 5.0.0 Work on maintain cloning
sysmt 11.05.2013 5.0.0 More work on maintain management, added verification table and workflow Started with authorization management in maintain module
cego 10.05.2013 2.17.12 Another evalaution problem detected with multi-dimensional index. In case of oterh compares than equal for the non-primary conditions, just the primary index condition is used for tracing the index and the index stractegy is just partial. This is still not optimal and the trace algorithm needs a complete review sometimes.
sysmt 10.05.2013 5.0.0 More work on thread management ( read status handling, exception cleanup, search panel )
sysmt 09.05.2013 5.0.0 Work on thread-maintain panel link. Basic linkage works
sysmt 08.05.2013 5.0.0 More work on order and sla management ( added sysexpansion and instexpansion order, added order report and monthly calculation report to sla panel)
cego 08.05.2013 2.17.11 Version released
sysmt 07.05.2013 5.0.0 More work on system resource management ( device assigment ) and mask cleanup for SLA and service management
sysmt 06.05.2013 5.0.0 Code cleanup of Maintain Management Modul. Added Maintain Calendar Module using vaadin calendar addon.
cego 06.05.2013 2.17.11 Include fix in CegoBTreeCursor ( string.h was commented, which lead to compile problems with Fedora Linux and gcc 4.8 )
sysmt 05.05.2013 5.0.0 More work on thread management, added document upload feature
cego 04.05.2013 2.17.10 Version released
cego 04.05.2013 2.17.10 The following script leads to missing result tuples drop if exists table t1; create table t1 ( a int not null, b int not null, c string(30) not null); create primary index on t1(a,b,c); insert into t1 values ( 1, 1, 'ALPHA'); insert into t1 values ( 1, 2, 'ALPHA'); insert into t1 values ( 2, 1, 'BETA'); insert into t1 values ( 2, 1, 'ALPGA'); insert into t1 values ( 1, 3, 'ALPHA'); insert into t1 values ( 2, 2, 'BETA'); insert into t1 values ( 1, 4, 'BETA'); insert into t1 values ( 1, 5, 'ALPHA'); select * from t1 where a = 1 and c = 'ALPHA'; This is caused by a wrong multi-dimensional index evaluation The method CegoAttrCond::getFilterCond has been modified to set up the appropriate index attribute condition
sysmt 04.05.2013 5.0.0 Cleanup of device statistics
sysmt 04.05.2013 5.0.0 Code cleanup of Catalog Management
sysmt 03.05.2013 5.0.0 Added panel for thread management Started code cleanup with device panel
sysmt 02.05.2013 5.0.0 Added panels for system set and thread group management
sysmt 02.05.2013 5.0.0 More work on device and maintain statistic panels using Vaddin Charts Love it ! Completed state transisitons for maintain management ( closing and abortion of maintain entries ) Continues with system management panels
sysmt 01.05.2013 5.0.0 More work on UserInfo, Maintain Management, Device Management and Panel reset after Login
sysmt 01.05.2013 5.0.0 More work on Maintain Management ( State transitions, layout, cloning )
sysmt 29.04.2013 5.0.0 More work on Service Management and Maintain Management
cegojdbc 29.04.2013 1.4.8 Version released
cego 29.04.2013 2.17.9 Version released
cego 29.04.2013 2.17.9 Fix in CegoTableManager::insertDataTable Since rollback data was written immediate after insert, In case of aborted transaction ( e.g. constraint violation ), rollback entries might be invalid and could lead to database crash and corruption. The transaction rollback actions and log actions have been moved to the very end of the method.
sysmt 27.04.2013 5.0.0 More work on Catalog Management and System Management
sysmt 26.04.2013 5.0.0 Work on service management and operation management ( Maintain ) Introdcution of interface class SysMTDataPeer
sysmt 25.04.2013 5.0.0 Work on Service Mangement Modules
sysmt 24.04.2013 5.0.0 More work on Device Management
cegojdbc 23.04.2013 1.4.8 Small patch in class CegoStatement method getResultSet. If no rows habe been selected, an empty result set is created now instead of resturing a null pointer.
sysmt 23.04.2013 5.0.0 Admin modules for group and user management have been mapped to vaadin. The most basic issues with vaadin seemed to be solved
cego 15.04.2013 2.17.9 In CegoDbThread::job the append and autocommit mode are reset to default values after a db session was finished.
sysmt 15.04.2013 5.0.0 Evaluation of vaadin web technology for next generation implementation
sysmt 11.04.2013 4.4.0 More work an documentation in chapter service management
cego 11.04.2013 2.17.8 Version released
cego 11.04.2013 2.17.8 A fix added in CegoDatabaseManager::useObject An already shared locked object could be accesed in write mode. cursor sysCur as select sysid as sysid from sysmt_system where srvid = :srvid; while fetch sysCur into (:sysid) = true begin delete from sysmt_system where sysid = :sysid; end; close sysCur; In some cases, the procedure code above might lead zu some ugly locking effects, since the active cursor table was modified in a non synchronized way. Wit the added fix, the code above leads to a deadlock situation ( as it must ). The procedure code rather should be replaced with var sysid int; :sysid = ( select min(sysid ) as sysid from sysmt_system where srvid = :srvid ); while :sysid != null begin delete from sysmt_system where sysid = :sysid; :sysid = ( select min(sysid ) as sysid from sysmt_system where srvid = :srvid ); end;
cego 10.04.2013 2.17.8 Small fix in CegoDistManager::updateLocalDataTable Caused by debug code, exception msg was empty. Debug code was removed.
sysmt 08.04.2013 4.4.0 More work on documentation Deployment of current alpha version on sysmt.lemke-it.com
sysmt 08.04.2013 4.4.0 Version deployed on Demo system sysmt.lemke-it.com
sysmt 07.04.2013 4.4.0 More improvements on HTML Layout
sysmt 07.04.2013 4.4.0 Added device statistics. Some HTML design cleanup. Fixes for the system order workflow
cego 06.04.2013 2.17.7 Version released
cego 06.04.2013 2.17.7 Fix for plus-operator on string values This was not handled correctly in CegoFieldValue::add create table t1 ( a long, b string(20), c string(20)); insert into t1 values ( 1, 'XXX', 'GGG'); select b + c from t1;
cego 06.04.2013 2.17.7 Added some fixes for aggregation queries nested in views. Attribute references have not been resolved correctly in all cases. E.g. create table t1 ( a long, b string(20)); create view v1 as select sum(a) as s from t1; select s from v1; was not resolved correctly
cego 02.04.2013 2.17.7 Reduction of some non-informative exception stacks in CegoDistManager and CegoQuery
sysmt 02.04.2013 4.4.0 More work on device management Introduction of component types
cego 02.04.2013 2.17.6 Added a small bug fix in CegoExpr::checkAttr and CegoTerm::checkAttr. For some query cases, the attribute evaluation for the table cursor was not done correctly. ( e.g. select a from t1 where 100 - a > 0 ) In the above methods, the expression type or term type was not evaluated. This has been added. Note : A workaround with bracket enclosing did work ( e.g. select a from t1 where ( 100 - a ) > 0
sysmt 30.03.2013 4.4.0 More work on documentation
sysmt 26.03.2013 4.4.0 Adapted sysmtexp and sysmtimp to modified database schema
cego 25.03.2013 2.17.5 Version released
cego 25.03.2013 2.17.5 Small fix in CegoAction::nextChar The _pC variable is verified to be not zero. In case of JDBC or DBD requests, empty query requests which are sent to the cego daemon, have crash it.
sysmt 21.03.2013 4.4.0 Changed authorization to be managed internally by SysMT ( same technique as you see on my home page )
sysmt 06.03.2013 4.3.0 Work on database ports for postgres and oracle
cego 21.02.2013 2.17.4 Version released
cego 21.02.2013 2.17.4 Small fix for btrees in CegoBTreeNode::maxEntries() for calculation of NODE entries. In some cases, the wrong calculation lead to corrupted btree node entries. Current measurements for big data tables ( pagesize 8k, poolsize 500000 pages ) CGCLT > select count(*) from t1; +---------------------+ | AGGR | | count(*) | +---------------------+ | 100000000 | +---------------------+ 1 tuples ok ( 100.696 s ) CGCLT > create btree b1 on t1(a); BTree b1 created ok ( 3472.460 s )
cegojdbc 18.02.2013 1.4.7 Driver testsuite improvements
cego 17.02.2013 2.17.3 Version released
cego 17.02.2013 2.17.3 BugFix in CegoDistManager::stopDistTableSet Instead if addObject, removeObject methods have to be called.
cegojdbc 15.02.2013 1.4.6 Session cleanup for forked connections
cegojdbc 14.02.2013 1.4.5 Version released
cegojdbc 14.02.2013 1.4.5 Added support for nested queries within one database connection. If a nested statement ist executed while another statement is open for the same connection, a new connection is forked to the database server. This allows to execute all nested statements in parallel.
sysmt 10.02.2013 4.3.0 Code cleanup with dedicated request dispatchers for each module ( usr, grp, mt, etc. ) Introduction of different system types ( DB, Web ) to manage non-SAP systems
cego 08.02.2013 2.17.2 Version released
cego 08.02.2013 2.17.2 Fixes and further improvement on btrees. Changing the index array in CegoBTreeValue to a static array improved performance again. By using the reference constructor of CegoFieldValue in method CegoBTreeValue::comp and using new introduced method CegoFieldValue::comp increased also index creation performance. Measurements for index creation : 3M rows -> integer = 23 secconds, varchar = 22 seconds
cego 07.02.2013 2.17.2 Another performance improvement for btrees. For index creation, the root node buffer page now stays fixed in the buffer pool. This results in another 10 percent index creation speedup 1M rows -> 8 sec Index creation time seems to be limited by the current cego bufferpool and datafile management which is needful for administration reasons. So another improvements result in a paradigm change, which is actually not planned.
cego 06.02.2013 2.17.2 Another small performance improvement was made in CegoFileHandler::allocatePage. With the doAppend flag set to true, new pages are allocated at the end instead of searching a free slot from the beginning. The flag has been activated for btree creation, which speeds up index creation for another 10 percent now 1M rows -> 9 sec ---- Default number of sempahore have been increased to a prim value of 911 for all semaphore types
cego 06.02.2013 2.17.1 Version released
lfcbase 06.02.2013 1.4.1 Version released
cego 06.02.2013 2.17.1 After measurements with optimized btrees, performance improvements have been observed of about 30 percent. Index creation time for integer values 1m rows -> 10 seconds ( before 15 seconds ) A page size of 4k seems to be the best for tuple insert and index creation All measurements on bigmac with OSX 10.8.2 and Intel Core i7 and 16GB Memory
lfcbase 06.02.2013 1.4.1 Small adaptions for AVLTrees
cego 06.02.2013 2.17.1 Optimization on BTree index objects. Since node entries are orders, search for values inside one node has changed from O(n) to O(log(n))
cego 04.02.2013 2.17.1 Adapted database utility cgmkdb for multi-tableset support
cego 04.02.2013 2.17.0 This version uses the AVlTreeT lfc base class to optimize grouping and ordering Version released
lfcbase 04.02.2013 1.4.0 Version released
lfcbase 03.02.2013 1.4.0 Added AVLTree to the foundation classes. Deletion of nodes still not implemented
cego 31.01.2013 2.16.1 There is still a performance and stability lack in case of big ordered or grouped result sets. Ordering and grouping results are stored in binary trees in memory, which are still NOT balanced. The trees will be balanced with version 2.17
cego 28.01.2013 2.16.1 Version released
cego 28.01.2013 2.16.1 Adaptions for CegoXPorter to export and import btree objects
cego 27.01.2013 2.16.0 Version released
cego 27.01.2013 2.16.0 Completed btree implementation for unique and non-unique btree objects. Primary btrees still in work ..
cego 26.01.2013 2.16.0 Further performance analysis for BTrees With a page size of 4k, performance increases significantly For an integer index on a table of about 1 million rows, creation time is about 36 sec.
cego 26.01.2013 2.16.0 Completed CegoBTreeCursor cursor for all search cases. Integration of Btree logic in CegoTableManagar::insertDataTable and deleteDataTable Still to do : implementation of CegoBTreeManager::deleteBTree
cego 24.01.2013 2.16.0 CegoBTreeCursor basically works. Still some work to treat all condition cases which are needed.
cego 23.01.2013 2.16.0 Integration of btree into CegoTableManager & friends to treat deletion, altering, contraint checking, import and export, etc
cego 23.01.2013 2.16.0 As expected, BTree space consumption is much less then AVL trees requires For a table of 500k rows, the following index sizes for an integer column have been measured BTree : 679 pages AVl : 2315 pages Creation time was nearly identical for both types ( about 30 seconds ) ( all measured on iMac 2.66 GHz Intel Core 2 Duo, 2 GB DDR3 RAM )
cego 23.01.2013 2.16.0 More work on btree implementation. Added page count and drop logic, which is specific for the btree page structure.
cego 22.01.2013 2.16.0 Further syntax expansion for btree index operations ( list btree, delete btree .. ) The first performances tests indicated, the btree creation time is faster than AVL index tables 200000 tuple AVL : 10 sec BTree 7 sec I assume, than creation time for btree objects increases linear, which makes it useful for large tables ( rowcount > 10^7 )
cego 21.01.2013 2.15.9 BTree insert operation basically works.
cego 21.01.2013 2.15.9 More work was done on BTree-Index Type. All required classes are added and integrated. Implementation of insert algorithm started.
cego 19.01.2013 2.15.9 Code preparation for introduction of btree+ index support. Renaming CegoIndex.. to CegoAVLIndex... New class CegoBTreeIndexManager and CegoBTreeIndexCursor.
cego 15.01.2013 2.15.8 Bug fix in CegoQueryHelper::evalAttrCond The return value for the evaluation of isLike predicates was not correct in all cases. For example the following query could lead to wrong results select * from t1 where a = 1 and lower(b) like '%bet%'; The second condition was not evaluated correctly and was ignored. Bug was trivial fixed by returning PARTITIAL value, if the checkAttr method did not return a valid atttribute
sysmt 15.01.2013 4.2.1 More work on online documentation
cego 15.01.2013 2.15.8 Small improvement in CegoDataPointer. Ids are stored in an array now, which should reduce memory copy operations for encoding and decoding.
cego 12.01.2013 2.15.7 Version released
cego 11.01.2013 2.15.7 Fix in CegoTransactionManager. Method commitUpdate was cleaned and reworked including a fix for a bufferFix leak. The leak occured for updates, where the virgin index has to be treated.
cego 09.01.2013 2.15.6 Version released
cego 09.01.2013 2.15.6 Relocation, copy and switch tests all have been succesful. There are still heavy leaks on distributed queries. This also includes support for the serial protocol.
sysmt 09.01.2013 4.2.1 More work on online documentation, regarding system and thread management
cego 08.01.2013 2.15.6 Introduced admin command "reset tableset". This command tries to bring back a tableset to a defined single node state on the primary host, if any exception occurs.
cego 08.01.2013 2.15.6 First distributed recovery tests with modified RecoveryManager have been successful. A full roundtrip could be performed stable - relocate secondary to B ( start distributed mode ) - copy tableset to secondary B - switch tableset to B - copy tableset to A - switch tableset to A - and again .... The procedure still seems to be pretty fragile, any exceptions lead to undefined system states ...
cego 07.01.2013 2.15.6 The lsn logic for the recovery procedure still was pretty buggy. So the recovery logic was completely reviewed in terms of local recovery ( single node ) and remote recovery ( distributed mode with log file shipping ) Still under time consuming testing ...
lfcbase 07.01.2013 1.3.7 removed install file from base directory. The file lead to build problems on FreeBSD
cego 06.01.2013 2.15.5 Version released
lfcbase 06.01.2013 1.3.6 Version released
cego 06.01.2013 2.15.5 Adaptions for new CommandExecuter constructor ( lfc version 1.3.6 )
lfcbase 06.01.2013 1.3.6 Fixes on CommandExecuter class. Also the constructor was expanded to set up an appropriate execution shell path
cego 03.01.2013 2.15.5 Small fix in CegoDbHandler::getMoreTableData In case of query abort, error message was not setup correctly.
cego 02.01.2013 2.15.5 Changed admin command "remove user" to "drop user"
cego 31.12.2012 2.15.5 Fix in CegoMain::runDaemon If an sql init file is set up, the authorization check must be disabled, otherwise the query fails, if any objects are accessed. This is done by calling the tablemanager disableAuth method.
cego 31.12.2012 2.15.5 Small format fix for show tableset admin command
cego 31.12.2012 2.15.4 Version released
cego 31.12.2012 2.15.4 Small fix in CegoAdminThread::getDetailedTSInfo for total page calculation. In case of offline tableset state, datafile size is read from the xml configuration file
cego 30.12.2012 2.15.4 Adaptions for backup with external sync command
cego 30.12.2012 2.15.3 Version released
cego 30.12.2012 2.15.3 Small adaptions for log files handling. Added leading zeros to archive log files ( e.g. TS1-000000012121.dbf )
cego 29.12.2012 2.15.3 Fixes for point-in-time recovery
cego 27.12.2012 2.15.2 Version released
cego 25.12.2012 2.15.2 More work on recovery and log management. Expanded admin commands to set and get external log manager information
cego 24.12.2012 2.15.2 Small fix for tableset recovery, object registration added after tableset recovery
cego 23.12.2012 2.15.2 Small fix for tableset import and export error handling If the tableset is not online, an appropriate error message is written
cego 18.12.2012 2.15.1 Version released
lfcbase 18.12.2012 1.3.5 Version released
cego 18.12.2012 2.15.1 Fix in CegoClient for error handling in command mode Removed a cout in CegoTableCursor
lfcbase 18.12.2012 1.3.5 Small fix in GetLongOpt::parseOpt If the option value contains = characters, the tokenizer has handeled it wrong. This has been fixed in a way, that all subsequent tokens are concatenated to the value
cego 18.12.2012 2.15.0 Version released
cegojadm 17.12.2012 1.5.0 Added BUStat Info to tableset menu ( requires cego version 2.15.x )
cego 17.12.2012 2.15.0 Added backup stat system table. This table logs all executed begin and end backup command. For both admin commands a message option as been added to write a corresponding context.
sysmt 15.12.2012 4.2.1 Small design fixes, work on online documentation
sysmt 12.12.2012 4.2.0 Version released
sysmt 10.12.2012 4.2.0 Cleanup and web deesign work done for 4.2 This version brings fresh google fonts and modern light look to the application
cego 20.11.2012 2.14.1 Version released
cego 20.11.2012 2.14.1 Some corrections and extentions for cgadm online help
lfcbase 18.11.2012 1.3.4 Version released
lfcbase 16.11.2012 1.3.4 In the method File::writeByte, the case was untreated that the write system call writes less than the number of bytes given. To handle this siuation, the method was expanded to repeat the write call untill all bytes have been written -------- if ( ( numbyte = ::write(_fd, buf, bufsize)) == -1 ) { Chain msg = Chain("Write system error for ") + _filename + Chain(" : ") + Chain(strerror(errno)); throw Exception(EXLOC, msg); } while ( numbyte < bufsize ) { unsigned long n; if ( ( n = ::write(_fd, (char*)((unsigned long)buf + numbyte), bufsize - numbyte)) == -1 ) { Chain msg = Chain("Write system error for ") + _filename + Chain(" : ") + Chain(strerror(errno)); throw Exception(EXLOC, msg); } numbyte += n; }
cego 15.11.2012 2.14.1 Small fix added for datafile creation. Caused by the changes for distributed admin queries, double entries have been created in the database configuration file.
sysmt 17.09.2012 4.1.2 Version released. This version adds small extensions for thread and system management
cegojadm 15.09.2012 1.4.0 Version released. This version is required in combination with cego version 2.14.x
cego 15.09.2012 2.14.0 Version released. Please note, that this version includes changes for the admin protocol. This results in an incompatibility to older versions of cgadm or CegoAdm( Java GUI ). Regarding the Java Admin Frontend, version 1.4.0 is required.
cego 13.09.2012 2.14.0 Since several admin network protocol changes have been made, lift up to version 2.14 was required. These changes are also synced to CegoAdm 1.4 In general, all changes are for cleanup and stabability purposes With the current version, the complete cego-cycle ( create db on primary, relocate to secondary, copy to secondary, switch to secondary, copy to primary and switch to primary ) works stable fro normal operation
cego 13.09.2012 2.13.12 More work on distributed features with stabability fixes
cego 11.09.2012 2.13.12 Build up of development to proceed with cego distribution mode features. For this, FreeBSd jails cego01, cego01 and cego03 have been set up. Since the distribution mode not maintained for a pretty long time, several stability and cleanup fixes are required. First fixes are included for clean daemon startup, tableset creation, copy and switch. Still many more things to do ...
cegojadm 09.09.2012 1.3.2 Added db threadinfo last action popup for db thread info panel
cegojdbc 06.09.2012 1.4.4 Version released
cegojdbc 06.09.2012 1.4.4 Small fix for CegoResultSet in case of empty query results. In this case, the metaData variable is allocated with an empty field array ( instead of leaving a null pointer ) public CegoResultSet() { List fl = new LinkedList(); _metaData = new CegoResultSetMetaData(fl); }
cego 05.09.2012 2.13.11 Version released
cego 05.09.2012 2.13.11 Fixed a bug in CegoDistCursor::evalCondition In case of is-like and is-not-like expressions, the evaluation was not correct for all cases
cego 05.09.2012 2.13.11 Added init mode for cego program. The init mode is used to create an initial database xml file. ( until now, this has to be done manually by script or text editor ) This adds some configuration comfort for the database admin ...
cego 05.09.2012 2.13.11 Small output adaptions for cgadm
cego 04.09.2012 2.13.10 Version released
cegojadm 04.09.2012 1.3.0 Version released
cego 03.09.2012 2.13.10 Changed add permission admin command to set permission command. This implements a combined create and update function for role permissions. Changed result message handling for CegoAdminThread for appropriate information handling in CegoAdm
cego 02.09.2012 2.13.9 Version released
cego 02.09.2012 2.13.9 Fix in CegoIndexManager::insertIndexTable. In case of active transactions, tuple state OBSOLETE ( just tuple state DELETED ) was not treated and might lead to duplicate index exceptions for multiple updates
cegojadm 26.08.2012 1.2.3 Complete code review and redesign to adapt to current cego backend
cegojadm 26.08.2012 1.2.2 initial entry
cego 26.08.2012 2.13.9 Added thread load calculation for admin and log threadPool.
cego 18.08.2012 2.13.9 Added thread load calculation for DbThreadPool. This gives an overview about the average usage of all database threads
cego 14.08.2012 2.13.8 Version released
cego 14.08.2012 2.13.8 Added some admin features for tableset definition. After a tableset is defined, parameters now can be changed using the set command ( e.g. set syssize 2000 for TS1; ) Furthermore, verbose mode was added, to give more information in case of distributed cego mode. For singel node operation, normal mode is more useful.
cego 05.08.2012 2.13.7 Version released
cego 05.08.2012 2.13.7 Fix in CegoDistCursor::getTuple for inner joins. Inner joins have not been used until now, so this is rather a basic fix
cego 03.08.2012 2.13.7 Fixed a small bug for nested aggregation queries ( CegoSelect::initAggrgation ) The aggregation value has not been initialized, which lead to wrong aggregation results for nested queries e.g. select thrid, ( select max(logts) from threadlog tl where tl.thrid = t.thrid ) from thread t;
cego 28.07.2012 2.13.6 Version released
cego 28.07.2012 2.13.6 In CegoAdminThread::medAddDataFile and srcAddDataFile, added checkpoint after adding a datafile. This avoids inconsitency, if a datafile was added and the server crashs before the next checkpoint was written.
cego 22.07.2012 2.13.6 Small fixes for cgclt profile mode ( serial parameter was not used )
lfcxml 21.07.2012 1.0.27 Version released
lfcbase 21.07.2012 1.3.3 Version released
cego 21.07.2012 2.13.5 Version released
sysmt 20.07.2012 4.0.1 Package released
cego 17.07.2012 2.13.5 Finished work for MinGW adaptions. Since the db seems to work fine, there are still some problems regarding signal catching and terminal emulation. Ctrl-C ist still not catched properly and for cgclt, cursor keys are not working in interactive mode ( seems to be a problem of the pdcurses library ) .
cego 16.07.2012 2.13.5 Some small adaptions made for smooth MinGW32 compile In class CegoDbHandler, changed enum identifier DELETE to DELETETAB Actually, no shared libraries are build
lfcxml 16.07.2012 1.0.27 Some small adaption made in Makefile for smooth minGW32 compile
lfcbase 16.07.2012 1.3.3 Some small adaptions made in Makefile and class Net for smooth MinGW32 compile
cegojdbc 14.07.2012 1.4.2 Driver version released
cego 14.07.2012 2.13.4 Database version released
cegojdbc 13.07.2012 1.4.2 According to cego-2.13.4, changed separator sign for serial encoding from ! to ^ and introduced SER_EESCAPE encoding
cego 13.07.2012 2.13.4 Small fix on serial encoding. The ESIGN in CegoSerial has been changed from ! to ^ Furthermore the ESIGN is escaped to !^&
cegojdbc 13.07.2012 1.4.1 New driver released. This driver contains some fixes for the serial protocol implementation. An improved DriverTest main class has been implemeted to check the driver with a database backend
cego 13.07.2012 2.13.3 Database version released. This version contains some performance improvements regarding network packet handling. For this, the new introduced methods in the lfc-1.3.2 library are used
lfcbase 13.07.2012 1.3.2 Package released
cego 11.07.2012 2.13.3 Improvements made for the serial network protocol. In combination with the extended NetHandler and Tokenizer base classes ( lfc-1.3.2 ), some ( expensive ) memory copy operations could be avoided. This increaess network performance for about 30%. The improvement is especially seen for large query results Before memory copy optimization ================================ Cego JDBC Driver Test Basic select test ... 510135 rows => 5.678 sec With memory copy optimization ============================= Cego JDBC Driver Test Basic select test ... 509905 rows => 4.102 sec About 1 sec is used by the JDBC driver itself, so server side performance increased from 4.6 sec to 3.1 sec ( => about 30 % )
lfcbase 07.07.2012 1.3.2 Added new constructor for class Tokenizer to tokenize character streams Tokenizer(char* buf, int bufLen, .... )
lfcbase 06.07.2012 1.3.2 Added method NetHandler::concatReset and NetHandler:concatAdd to build network message in a more efficient way
cegojdbc 02.07.2012 1.4.1 Some small performance improvements on the driver. Instead of hash table, the row data is stored into an array. The speeds up read performance for another second regarding a select query with 500k tuples as the result set ( from 6 sec to 5 sec ) It has been analyzed, that the driver calculation on client side now is about 1 second for 500k tuple. Further improvements can be done on server side to increase read performance regarding high volume results ( class CegoDbHandler and base class Net can be implemented more efficient by avoiding expensive memory copy operations ... )
cego 01.07.2012 2.13.2 Database version released
cegojdbc 01.07.2012 1.4.0 New driver released
cegojdbc 30.06.2012 1.4.0 First performance comparison indicates the difference between XML and serial protocol XML === Cego JDBC Driver Test Basic select test ... 510135 rows => 13.344 sec Serial ====== Cego JDBC Driver Test Basic select test ... 510135 rows => 5.678 sec
cego 30.06.2012 2.13.2 Small fix for error message handling in CegoDbHandler for XML protocol. The error message got lost with the serial implementation
cegojdbc 30.06.2012 1.4.0 Serial protocol expansion for procedures and blobs done
cegojdbc 29.06.2012 1.4.0 Added class CegoEscapeTokenizer to extend StringTokenizer. This allows to handle escapes for the delimiter character which is required by the serial protocol CegoDatagram was renamed to CegoNetMsg. This class should encapsulate all protocol logic including XML keywords.
cego 29.06.2012 2.13.2 Fix in CegoSelect for the rowlimit option. For ordered queries, the evaluation was not correct. The limit evaluation has been moved from method nextResultTuple to nextTuple
cegojdbc 29.06.2012 1.4.0 Added support for the serial protocol Basic queries work, still something to do for more sophisticed queries like procedures and blobs
cego 22.06.2012 2.13.2 It is strongly recommended to use the improved lfc-1.3.1 base library. Performance improvements up to 300% (!) have been observed
lfcbase 22.06.2012 1.3.1 Added static string buffer to chain class. This avoids dynamic memory allocation for small strings and should result in performance improvement
cego 21.06.2012 2.13.2 Small adaption to CegoAdmAction to abbreviate long hostnames
cego 17.06.2012 2.13.2 Added protocol attribute to client profile entry
sysmt 15.06.2012 4.0.1 Testentry
sysmt 15.06.2012 4.0.0 Initial entry
cego 20.05.2012 2.13.1 Small fix for desc procedure command. Parameter type and size have not been indicated correctly.
lfcbase 13.05.2012 1.3.0 Expansion of Tokenizer to support escape characters ( required for cego-2.13 )
cego 12.05.2012 2.13.0 The new version fixes a bug in CegoIndexCursor.
The buffer pool fix for the data pointer (dataLock ) was not hold which might lead to invalid memory pointers from the calling method.
cego 02.05.2012 2.13.0 Work on new version. This version supports a native client protocol which is expected to be much faster. ( XML generation and parsing seems to be pretty much overhead ) For comparison reasons, both protocols are supported and can be selected at daemon runtime.
lfcbase 30.04.2012 1.2.1 Fix in equal-operator for Tokenizer ( esc was missing )
cego 25.04.2012 2.12.8 Bug fix for system table selection ( select * from $table ... $index .. )
Column id was not set in CegoSystemObject::getObject, which lead to null values with optimized decoding algorithm
Forced compilation of stored procedures, if "desc procedure" is called on uncompiled procedure
cego 09.04.2012 2.12.7 Fixes for outer join queries in combination with multidimensional index values
( in some situations, this lead to wrong results .. see check035.sql in the sample db directory)
Fix in CegoTableManager::keyReferenceExists, the table cursor setup return value was not handled correctly.
cego 07.04.2012 2.12.6 Fix for insert-by-select queries in stored procedures. The procedure block pointer was not set up, so procedure variables have no been resolved. Relevant for queries like: insert into t1 select :a, "XXX" from t2 Fix in CegoProcedure for parameter check ( procedures with no arguments and return value ) Added further checks to the chkdb sample db
cego 05.04.2012 2.12.5 Another fix for FLA-Cache has been added ( cache clearing completion for case conditions, functions and aggregations )
cego 04.04.2012 2.12.5 Fix in CegoLogRecord to avoid compiler warning with clang++ Fix in CegoCLient for correct fixed type in dump file
cego 04.04.2012 2.12.4 Fix in CegoLogRecord to avoid compiler warning with clang++ Fix in CegoCLient for correct fixed type in dump file
cego 31.03.2012 2.12.3 Small fvl decoding bug fix in CegoQueryHelper::decodeFVL occured with performance enhancements and null value fields
cego 30.03.2012 2.12.2 Made some performance fixes - elemination of debug messages - improved version of CegoQueryHelper::decodeFVL ( linear approach) - FLA-Cache in CegoFactor
cego 29.02.2012 2.12.2 Added distinct option for aggregation ( select count( distinct a) from t1 )
cego 22.02.2012 2.12.2 Fix in CegoAttrDesc::evalReferences, the tablename was not compared with the alias value. The code has been changed from: if ( _tableName == (Chain)pCO->getTabName() ) to if ( _tableName == (Chain)pCO->getTabName() || _tableName == (Chain)pCO->getTabAlias() )
cego 19.02.2012 2.12.2 Fix in CegoAdminThread::medVerifyTableset and CegoAdminThread::correctTableSet. The tableset user was not set up correctly, which lead to an authorization problem
cego 16.01.2012 2.12.1 Fixed some problems occured with AIX 6.x In CegoBufferPool::initPool, invalid memory was written LIBOBJECTS fix in Makefile ( removed CegoJoinObject, not needed, but referenced class CegoPredDesc )
cego 15.01.2012 2.12.0 Changed to lfc-1.2.0 with IP v6 support.In the database XML file, now a static host binding supported to specify the server host, which should be used ( HOSTNAME attribute )
lfcbase 15.01.2012 1.2.0 Added IP v6 support to the Net class
cego 24.12.2011 2.11.8 Small cosmetic grammar change for export and import admin command ( export xml instead of xml export ) and checkpoint setting ( set checkpoint instead of checkpoint ) Improved online help for cgadm Exception handling fixed in case of unknown tablesets ( cgclt in interactive mode )
cego 10.12.2011 2.11.8 Small fix in CegoFunction::DATE2STR. In case of null values, the result was undefined. Now null string is returned.
cego 11.11.2011 2.11.7 Added the chkload load simulation script in the sample/chkdb directory. The cgblow program was improved and configuration is more flexible now. Online help improvements for cgadm. Parser fix for cgadm user trace enabling command.
cego 08.11.2011 2.11.6 Some code fixes to avoid warnings for clang compiler ( CegoXMLSpace.cc and CegoPredDesc.cc ) In CegoAction constructor, the variable _procContext now is initialized to false. This was detected with FreeBSD 9.0 tests, the boolean vars seem to be initialized as true. Another bug has been fixed in CegoDbThread::checkReloadRequest(). Before removing the ts entry from the list, the assignment int ts = *pTS; must be executed.
cego 06.11.2011 2.11.5 Repeated crash recovery test ( chkrecover in sample/chkdb ) is running stable now for insert / delete TA operations with three clients. Actually, penetration tests on FreeBSD are going and and if successful, the version is going to be released...
cego 05.11.2011 2.11.5 Improved crash recovery ist tested now in several situations. Online admin help has been improved
cego 22.10.2011 2.11.5 Finishes crash recovery for the renamed rb segements. A simple trick is used : For each committed ( or rollbacked ) entry in the rbseg table, the tuple tid is set to the current tid. So in case of a crash recovery and a repeated commit or rollback, these entries are ignored
cego 18.10.2011 2.11.5 Fix for nextcount and setcount function in CegoFunction::asChain. The function arguments have not been generated correctly
cego 15.10.2011 2.11.4 Cosmetic changes in CegoClient regarding error messages
Improved transaction exception handling : Before commit or rollback, the corresponding segment is renamed to rbcommit or rbrollback. This enables an appropriate recovery of ongoing commit and rollback operations after a crash. ( crash recovery for the renamned segemnts is still todo )
cego 12.10.2011 2.11.4 Performance improvement regarding join optimization. The method CegoQueryHelper::evalAttrCond was madified in a way, that a more precise decision could be done for using any appropriate index. ( instead of boolean, now the method returns a enumeration INAPP, PARTIAL or COMPLETE ) This improves select performance in some special cases dramatically.
cego 09.10.2011 2.11.3 Dump mode fix for export strings containing newlines.Newloines have not been escaped. Newline handling fix for quote escape mode ( newline and other escaep characters have been not translated during input scan )
cego 08.10.2011 2.11.3 A fix has been added for new transaction handling. If no modifying operations have taken place, the commit/rollaback operations resulted with an error. The method CegoSelect::consolidateConjunctionList has been improved to handle or-conditions ( conditions should be not consolidated, if they contain or-conditions, otherwise index could not be used ) ( e.g. select * from t1 where a = 1 and ( b = "a" or b = "b") )
cego 22.09.2011 2.11.2 Added record timeout tuning parameter Adjusted default semaphore definitons in cgmkdb ( 2141 for page and rec sema, 1013 for file and pool sema ). This better avoids deadlocks in case of concurrent transactions.
cego 19.09.2011 2.11.2 Performance improvements in CegoTransactionManager. For each transaction, now a dedicated transaction file is created instead of storing the undo information into a single file. In case of concurrent transactions, this should improve performance. Furthermore, no more reorganisation of the RBSEG area is needed.
cego 12.09.2011 2.11.1 Fixes for new role concept( e.g export and import of tablesets did not work ) Changed counter ids back to identifiers Added some datatype cast for decimal values
cego 10.09.2011 2.11.0 New role and permssion concept added
cego 21.08.2011 2.10.14 Thanks to Keve Nagy, the cgmkdb script was improved and stabilized very much.
cego 07.08.2011 2.10.13 Change in CegoDatabaseManager::useObject to avoid deadlock for queries like: update t2 set a = ( select a from t2 where b = "ZZZ" ) where a = 1000; useObject now checks for the calling thread and handles subsequent useObject-calls of the same thread.
cego 05.08.2011 2.10.13 Added structore option for client dump mode
cego 02.08.2011 2.10.13 Improvements for cgmkdb script Added query optimization for like conditions the following execution plan: CGCLT > plan select shortdesc from sysmt_mtview where shortdesc like "Oracle Patch"; +----------------------------------------------------------------------+ | PLAN | | DESCRIPTION | +----------------------------------------------------------------------+ | Execution plan | | --------------- | | Joining view sysmt_mtview (sysmt_mtview) | | View plan for sysmt_mtview | | --------------------------- | | Joining table sysmt_project (prj) with Full table scan | | Joining table sysmt_system (sys) with index trace on pid = prj.pid | | Joining table sysmt_mt (mt) with index trace on sysid = sys.sysid | +----------------------------------------------------------------------+ ok ( 0.012 s ) seems to be not optimal. It is rather useful to use the like condition for the table cursor inside the view.
lfcxml 25.07.2011 1.0.26 Made destructors for XMLInStream and XMLOutStream virtual This solves a compile problem occured with the clang++ compiler ( version 3.0 )
cego 24.07.2011 2.10.12 Fix for aggregation queries. Complex queries like select sum(a) + sum(b) + sum(c), sum(a) - sum(b), avg(a), avg(b) from t2; did not work. Changed client profile format more compact ( pid:server:port:ts:prompt:user:pwd )
lfcbase 23.07.2011 1.1.41 Fix in BigInteger class for sub operator
cego 20.07.2011 2.10.11 Added parameter length check for procedure in parameter Added basefunc script for advanced date functions ( second, minute, hour, day, month, year ) Fix in CegoFunction::evalFieldValue ( date2str(sysdate) returned wrong date )
cego 20.07.2011 2.10.11 Added parameter length check for procedure in parameter Added basefunc script for advanced date functions ( second, minute, hour, day, month, year ) Fix in CegoFunction::evalFieldValue ( date2str(sysdate) returned wrong date )
cego 19.07.2011 2.10.10 Fix im Makefile for script install Added configuration parameters for NUMLOCKTRIES, PAGELOCKTIMEOUT, FILELOCKTIMEOUT and POOLLOCKTIMEOUT The parameters can be setup in the database xml configuration file Fixes for setcount function ( CegoFunction::toElement, fromElement, toChain )
cego 18.07.2011 2.10.9 Expression order for between expressions was not correct ( for views ) Added README for FreeBSD rc setup Tools are now also installed in the cego bin dir ( cgmkdb, cgbackup and cgrecover )
cego 09.07.2011 2.10.8 Fix for unionselect ( empty jfl in CegoSelect::nextTuple before calling union select )
lfcbase 09.07.2011 1.1.39 Corrections on BigInteger and BigDecimal class. The division operation was not implemnted correctly for cases quotient larger than dividend ( e.g. 1.23 / 3456.7 )
cego 08.07.2011 2.10.8 Added cast from float to fixed, added cast from string to fixed
cegojdbc 07.07.2011 1.3.4 Protocol adaptions for correct character encoding ( problems with umlauts )
cego 07.07.2011 2.10.7 On Solaris x86, the CegoDbThread::loadObjects might lead to a core dump. This is, because a dedicated CegoAction instance was allocated for the method. Since this method is called by the forcereload option, many threads simultaniously are allocating this large instance, which might fail. Since there is no need to use a dedicated instance, the member variable _pPA is used for this. ( this effect was just observed on Solaris x86 platform ) The CegoDbThread::loadObject method was removed completely. This method is critical and due to dynamic object reloading, there is no more need of this method.
cego 03.07.2011 2.10.5 Small fixes in CegoDbThread. The thread synchronisation of the load queue for dynamic object reloading has been fixed ( mutex are used now from the db thread pool ) The forceload option for tableset startup is also supported now for admin startup command For batch processing, the forced object load at startup has been removed ( for performance reasons ) and is done dynamically now.
cego 03.07.2011 2.10.6 Small fixes in CegoDbThread. The thread synchronisation of the load queue for dynamic object reloading has been fixed ( mutex are used now from the db thread pool ) The forceload option for tableset startup is also supported now for admin startup command For batch processing, the forced object load at startup has been removed ( for performance reasons ) and is done dynamically now.
cego 02.07.2011 2.10.5 Introduced the admin command "correct tableset". After a system crash, some index tables could be invalidated because they are written inconsistently ( for performance reasons ). The correct tableset command rebuild all invalidated index entries. Actually, this command has to be executed by the db admin manually. Introduced the tableset initfile. This is a batchfile containing standard db commands which is executed at tableset startup time. This file can contain initialization or check routines ( e.g. counter trigger to adjust counters after db crash ) Added setcount function to set up counter values in a stored procedure.
cego 30.06.2011 2.10.5 Stabilization fixes for thread startup. In case of large thread configurations, the thread lock initialization error "Resource busy" was not catched at thread startup. It seems this might occur, if many thread are calling the pthread_rwlock_init system call at the same time. So the thread lock init method was moved to the constructor, which is called sequentially for all db threads.
cego 28.06.2011 2.10.4 More fixes for new join optimization in CegoDistCursor, CegoAttrCond and CegoSelect Multidimensional indexes still have not been used for all required cases. View condition in CegoDistCursor was not reset, which might lead to wrong view results.
cego 27.06.2011 2.10.4 Small change in CegoAttrCond::getFilterCond. The attribute condition is provided in appropriate order for the given schema. This is necessary for multidimensional indexes to ensure a valid comparison. Improved thread synchronisation for db thread pool ( syncToReady method introduced ). Some logic has been moved to syncToReady since large db thread pool configurations ( > 200 ) lead to a crash at system startup phase
cego 26.06.2011 2.10.3 Fix in CegoTableCursor::setup. The attribute condition has to filtered before creating an index cursor. Index cursor requires attr cond with complete match of all attribute fields, otherwise wrong results are returned Introduction of attr cond strength to use the best available index: select a from t1 where a = 1 and b < 100 uses index on a, because strength for "equal is stronger than "less than"
cego 25.06.2011 2.10.2 Small fix in CegoAttrCond::setup to match attribute comparisons of type VAL Further fixes for attribute resolution, change of attribute condition handling in CegoDistCursor Cosmetic changes for stored procedures and views. For the text, more line breaks are used now.
cego 24.06.2011 2.10.1 All tests for 2.10.1 finished. The iworxs schema was a good test case to proof all the new features.
cego 23.06.2011 2.10.1 Fix in CegoDbThread::checkLoadRequest. In some cases the server has crashed, since there was a lack of thread synchroninsation for the view and procedure loadList which comes with 2.10.0. Fix in CegoDatabaseManager::useObject, the EXCLUSIVE_WRITE case was not handled for SHARED requests. In CegoSelect, the attribute management was completely redesigned. Instead of instance variables of the CegoAttrDesc class, references are now managed. This gives a better control for valid and invalid attribute references. Join optimization for join objects has been expanded. Now indexes are better used inside nestes join objects. This feature is still under investigation. The execution plan has been expanded to get information for join objects including the used indexes.
cego 21.06.2011 2.10.0 Elimination of many compiler warnings for the clang C++ compiler. This also brought up several bug fixes in the code. Thanks a lot to the clang team for these hints :)
dragon 20.06.2011 1.3.8 Warning elemination for clang++ compiler
lfcbase 20.06.2011 1.1.38 Warning elemination for clang++ compiler Completion in BigInteger for case -x - -x
cego 19.06.2011 2.10.0 New feature added for multi dimensional index access and improved view condition setting in the CegoSelect class. These features are still under investigation.
cego 16.06.2011 2.9.6 Fix in CegoGroupSpace::dropGroupSpace, _groupSchema was not set to empty, which micht lead to list position exceeded errors Further fixes in CegoDistManager, dynamic view reload strategy has been redesigned and stabalized ( mt problems had been detected ) This version has been extensively tested with different concurrent create, drop and select operations on views and seems to be pretty stable.
cego 13.06.2011 2.9.5 Some fixes in CegoLockHandler ( introduction of count locks ), lock statistics disabling via command line switch ( nolockstat ) In CegoSelect, invalid tables are checked now ( this problem arises with view defintions including undefined sub objects )
cego 13.06.2011 2.9.4 Some fixes in CegoLockHandler ( introduction of count locks ), lock statistics disabling via command line switch ( nolockstat ) In CegoSelect, invalid tables are checked now ( this problem arises with view defintions including undefined sub objects )
cego 12.06.2011 2.9.3 Small fixes in CegoFieldValue::toChain regarding escape charater handling ( quotes and backslashes ) Changed view and procedure loading strategy. Views now are loadad on demand and may contain sub objects which are still unknown. On demand loading improves database startup time significantly.
cego 04.06.2011 2.9.2 Fix in CegoTableManager::updateDataTable. Result of QueryHelper::getAttributeCondList was not checked on acl size = 1 Small grammar extension to support table alias for update and delete operations
cego 03.06.2011 2.9.2 Fix for CegoSelect::nextJoinTuple. The jfl array is just set empty before calling evalSelection. Otherwise in case of no row result, the field is set to empty which may casue problems for some nested inner and outer joins.
cego 02.06.2011 2.9.2 Another fix for inner joins. Evaluation was still not correct for all nested sub joins. Fixed alias problem in views: create view v1 as select a from .. sets up alias a from attribute a Fix in CegoPredDesc::toChain(const Chain& indent), string have not been generated correctly for ISLIKE and ISNOTLIKE
lfcxml 01.06.2011 1.0.25 Increased MAXSTRINGLEN constant to 100000
lfcxml 31.05.2011 1.0.25 Added escape sequence to XMLEscapce::descape
cego 31.05.2011 2.9.1 Fix for inner join statements. An additional where condition was no handled correctly, e.g.: select * from t1 inner join t2 on t1.a = t2.c where t2.d = "xxx"; Enoding enhancement for nested aggregation queries, e.g.: update t1 set a = ( select max(a) from t2 ); Fix in CegoXPorter::writeTableObject, the check for blob tables is just needed for plain exports Fix in CegoSelect for ordering handling. Native order list introducd to generate valid select statements. Fix in CegoTableManager::dropTable, getObjectListByTable now called with ignoreInvalid = false to reach invalid index to drop.
cego 29.05.2011 2.9.0 Fix in CegoDistManager::dropLocalObject. For table drops, the corresponding indexes, keys and checks have not been removed from the object cache. This might lead to problems, if tables are removed and recreated.
cego 28.05.2011 2.9.0 Added client dump mode to dump a tableset in SQL syntax. This extension results in some constant changes so tableset xml exports of earlier versions can not be used any more ( ! ). Also there are some incompatibilities to the JDBC-Driver. The CegoJDBC version 1.3.2 supports cego 2.9.0.
cego 27.05.2011 2.8.5 Another fix for CegoSelect added. The reset function now takes a doRelease parameter to specify, if the open cursors should be released or not. This is required to use the reset method for any nested queries ( e.g. CegoFactor::evalFieldValue ), otherwise locking problem can happen. Fixed a loop bug in CegoQueryHelper::evalSelection ( missing i++ ). Queries like select t1.* from t1 have lost in a endless loop
cego 25.05.2011 2.8.5 Fix in CegoFactor::evalFieldValue. There was missing a prepare call before evaluating the query. This might lead to evaluation problems in stored procedures. Fixed another memory leak ( CegoSelect::cleanUp() call _parentAttrRefList.Empty() )
cego 24.05.2011 2.8.4 Fix of some memory leaks which occur for some nested queries in views In class CegoFactor::evalFieldValue(), for pSelect handle, the cleanUp method was called. Is is rather useful to call reset in this situation to achieve faster query execution. Furthermore, some fixes have been done for the CegoSelect::reset method, to also reset aggDone flag and orderspace.
cego 26.04.2011 2.8.4 Output format modifications for pool info and tableset info in admin monitor
cego 19.04.2011 2.8.4 Added return value in CegoCheckpoint::CeckpointEntry::operator =
cego 18.04.2011 2.8.3 Fix in CegoFunction::date2int and CegoFieldValue::castTo and others added. The current datetime evaluation returned zero ( e.g. select date2int(sysdate) returned 0 ) which is not appropriate for comparisons ( e.g. select a from t where a < sysdate ) since the sysdate evaluation returned 0. Now the sysdate evaluation returned the current number of seconds according to the Unix timestamp. This is now useful for datetime comparisons with sysdate.
cego 03.04.2011 2.8.2 Added checkpoint management for periodic tableset checkpoints, if checkpoint interval has been reached. Tableset checkpoints can be managed via cgadm. Improvements made for real time monitor. Data is now locally cached and polling requests are limited to avoid heavy admin requests in case of windows refreshing effects.
cego 02.04.2011 2.8.1 Added fix in CegoIndexManager::deleteIndexTable. In case IV, the nie IndexEntry was modified but the buffer was not released with a dirty mark. if (pageNE.isFixed()) _pTM->releaseDataPtrUnlocked(pageNE, true); // was false A problem occurs very rare, especially in case of very small pool configurations and if buffer writes are forced After crash recovery, touched indexes are automatically set to invalid because they might be inconsitent. These indexes must be recreated.
cego 01.04.2011 2.8.1 Added fix for average aggreagtion function regarding null values
cego 28.03.2011 2.8.0 Added more monitor options and improved information
cego 26.03.2011 2.7.20 Small fix in CegoDbThread. If a tableset is stopped, for each db thread the transaction manager is triggered to release its fixed rbseg pages. If this is not done, buffer fix errors might occur if the tableset is started up again. void CegoDbThread::unloadObjects(int tabSetId) { _pTabMng->getTransactionManager()->release(tabSetId); // added _pTabMng->removeAllComp(tabSetId); }
cego 26.03.2011 2.7.20 Small fix in CegoDbThread. If a tableset is stopped, for each db thread the transaction manager is triggered to release its fixed rbseg pages. If this is not done, buffer fix errors might occur if the tableset is started up again. void CegoDbThread::unloadObjects(int tabSetId) { _pTabMng->getTransactionManager()->release(tabSetId); // added _pTabMng->removeAllComp(tabSetId); }
cego 25.03.2011 2.7.19 Added parameter count check for procedures. The class CegoProcVar has been expanded to store information for variable type and length instead of getting this information from the contained FieldValue member var. This seems to be more clean and avoid bad effects, if null value information should be stored in the param values. Before this expansion, it was possible to crash the database by calling procedure with wrong parameter count. Now this can not happen anymore also because parameter cound is checked now.
cego 22.03.2011 2.7.19 Fix in CegoAction::insertBySelectStore. With the insert query expansion coming with 2.7.16, the insert by statement did not work any more. This patch fixes the problem.
cego 22.03.2011 2.7.18 Fix in CegoAction::insertBySelectStore. With the insert query expansion coming with 2.7.16, the insert by statement did not work any more. This patch fixes the problem.
cego 14.03.2011 2.7.17 Fix in CegoIndexCursor. The type assignment was not correctly in case of the following query select * from t1 where a = null; The value for the index was set to null too. Instead, now we take the type value retrieved from the index schema Fix in CegoXPorter::readTableObject for binary import mode ( table has not been created ).
cego 12.03.2011 2.7.16 Syntax expansion for insert statments to support two dimensional array inserts: insert into t1 values (1,"xx"), (2,"yy"), (3,"zz");
cego 11.03.2011 2.7.15 Fix in CegoFieldValue constructor. If string sysdate is detected for type Datetime, the currect date is evaluated. An exception occured in case of Datetime default values in combination with table import.
cego 10.03.2011 2.7.14 With the changed CegoOrderSpace code, the multidimensional ordering failed. This release adds a patch for correct multidimensional ordering like select a,b from t1 order by a,b
cego 06.03.2011 2.7.13 Added pidfile command line option for cego daemon mode. This allows to specify the pidfile on command line level. If not set, the pidfile entry in the xml file is used.
cego 26.02.2011 2.7.12 Small fix in CegoFieldValue for null value comparison ( operator > ) Fix in CegoXPorter for default value export
cego 19.02.2011 2.7.11 Fix in CegoXPorter. Default values have not been exported with xmlExportTableSet method. Performance improvement for ordering.
cego 07.01.2011 2.7.10 Fix in CegoSelect. The pointer variable pOrderSpace was not initialized to zero in the second constructor. This might lead to system crashes. I observed this in combination with stored procedures and cursors containing ordering statements.
cego 05.01.2011 2.7.9 Fix in CegoMain. For import and export mode, the case sensitive flag was not defined yet. Since the value comparison during index creations depends on the flag, this might lead to wrong index trees. Also the quote escapce flag is set up now to the appropriate value.
cego 29.12.2010 2.7.8 Column name check added in CegoTableManager::createDataTable ( create table t1 ( a int, a string(10)) still was accepted )
cego 27.12.2010 2.7.7 Cleanup of legacy lock handler orderlock methods. Renaming of tag MAXORDERSIZE to SORTAREASIZE.
cego 22.12.2010 2.7.6 Cleanup of legacy ORDERSPACE object entries.
cego 12.12.2010 2.7.5 Reimplementation has also done for the grouping space
cego 10.12.2010 2.7.5 Cause by performance issues, the sort area ( OrderSpace ) was reimplemented. Since there is no need to store sorted data in the table space, the order space now is allocated in private heap memory This speeds up order performance significantely. Still there is missing an allocation limit to avoid uncontrolled sort area memory allocation.
cegojdbc 05.12.2010 1.3.0 New implementation of the XML base protocol. Instead of JDOM, a native and reduced XML parser is used now. It was expected to achieve some performance improvements, which is still under investigation. The protocols can be switched in the Constant class by enabling one of the datagram values. public static int DATAGRAM_JDOM = 1; public static int DATAGRAM_XMLNATIVE = 2; // public static int DATAGRAM_SET = DATAGRAM_JDOM; public static int DATAGRAM_SET = DATAGRAM_XMLNATIVE;
cego 29.11.2010 2.7.4 Removed LOGNAME token from CegoAdm.def ( no longer needed ) Fix in CegoDbThread::loadObjects. The reload method was not thread safe. Further, the tableset value for the CegoAction object _pPA was set to the target set for reloading. This might have confused running and active sessions. The CegoAction object is allocated locally now, so there is now conflict and no need for synchronisation
lfcbase 23.11.2010 1.1.36 Fix in Chain::isNUm method. Empty strings have been validated as numbers. Fix in BigInteger class. The comparison operators < and > did not return correct values for zero value comparisons.
lfcxml 21.11.2010 1.0.24 Small adaptions for clean Linux ( Ubuntu 10.10 ) compile
cegodbd 21.11.2010 1.1.14 Fixes in XS-Code to compile clean for Ubuntu and Mac OSX
cego 21.11.2010 2.7.3 Added more methods to the CegoAdmNet class. Small adaptions for clean Linux ( Ubuntu 10.10 ) compile ( include string.h and stdlib.h )
lfcbase 21.11.2010 1.1.35 Small adaptions for clean Linux ( Ubuntu 10.10 ) compile
cego 20.11.2010 2.7.2 Another fix for the query cache was added, which should increase cache performance. A change in CegoProcFetch was made to allow to use proc fetch vars outside the current block ( constructor change from CegoProcVar to Chain, the variable is later on resolved using the pBlock reference )
cego 18.11.2010 2.7.2 Improved exception handling in CegoTableManager. In some cases, new allocated TableCursors have not been cleaned up in case of any thrown exceptions. This might lead to hanging locks. The exception handling has been cleaned for thsi module.
cego 17.11.2010 2.7.1 A bug was fixed in CegoTableManager to avoid the following problem CGCLT > delete from sysmt_mtlog where sysid in ( select sysid from sysmt_system where pid = 10031 ); Error : list position exceeded Query failed ok ( 0.003 s ) This happened, if the result of the subselect was empty. The subselect was not prepared and analyzed correctly. This also may occured for update queries in a similar manner The problem was fixed by adding the following code to the methods CegoTableManager::deleteDataTable and CegoTableManager::updateDataTable CegoSelect *pSelect = pPred->getSelectQuery(); if ( pSelect ) { pSelect->setParentJoinBuf(&jfl, 1); } pPred->analyzeSelect(); A bug was fixed in CegoDistManager::startTableSet. In case of checkpoint writing, the max lsn was not set up correctly. This was fixed with the line maxlsn = writeCheckPoint(tableSet, true, false);
cego 14.11.2010 2.7.0 With the new admin C++ API ( CegoAdmNet ), minor version was increased to 2.7
cego 12.11.2010 2.6.21 Improvements for grouping, replaced CegoFactor with CegoExpr in CegoAggregation class. This is a small optimization, since before the the expr was encapsulated in a factor. Furthermore, the grouping logic has been redesigned to support any selection order: select a,b, count(*) ... group by a,b ... or select count(*), a, b ... group by a,b ... Also expression evaluation in the selection has been added ( select 10*count(*), a ... group by a )
cego 07.11.2010 2.6.21 Introduction of CegoAdmNet. This is a admin client interface used later for the Perl CegoCtl module. Via the CegoAdmNet interface, a set of admin actions can be performed.
cego 06.11.2010 2.6.20 Added query abortion for delete and update operations. In case of delete queries, there is no rollack performed so some of the tuples are deleted. Since updated are executed in any case inside a transaction ( forced or by user ), rollback is performed to the original table state.
cego 29.10.2010 2.6.19 Added profiling for CegoClient. The enables a user to manage several cego db connections in a client rc file.
cego 28.10.2010 2.6.19 Added check for tableset import. The name of the tableset in export file must match the name of the target tableset. This is required, since the tableset name occurs in view objects. To change tableset name, the XML export file should be edited to change the tableset name. This can be done using standard Unix string replacing methods ( sed )
cego 18.10.2010 2.6.18 Small bugfixes on CegoTerm::evalReferences and CegoNet::wasreset. No values were returned. This has been detected with Forte C Compiler on Solaris
cego 16.10.2010 2.6.17 Join optimization fix on views. By the introduction of the CegoSelect::distIndexExists method, the index usage for view objects has been lost. This has been fixed by expanding the if-Statement to the distObjectExists check for views if ( _pGTM->distObjectExists(_joinList[i]->getTabName(), _joinList[i]->getTabSetId(), CegoObject::VIEW) || _pGTM->distIndexExists(_joinList[i]->getTabSetId(), _joinList[i]->getTabName(), pAC->getAttrName() ) ) Another fix has been done for query caching. In the CegoSelect::cleanUP method, the cache has been cleaned up and the isCached flag is reset to false. Otherwise, views will use the cached data for subsequent calls instead of refreshing the data on every new invokation.
cego 11.10.2010 2.6.16 Query optimization added for nested queries. This has impact on queries, which contain nested subqueries with no external table references. E.g. select a from t1 where b in ( select t2.d from t2 where t2.c = 2 ); In this case, the result of the subquery is cached on first evaluation time and is reused for the next value retrievels. In case of complex subqueries ( with no external references), this might improve query performance significantly.
cego 08.10.2010 2.6.15 Bug fix in CegoOutput::rowOut. The preFill variable was not set up correctly, which might lead to undefined value. As a result, this may lead to hanging output in case of some queries ( e.g. show view xxx ); The effect was observed on Solaris x86.
dragon 18.09.2010 1.3.7 Changed access path for lfc library to plain lib path
cegodbd 18.09.2010 1.1.13 Fixed a compiliation problem with new Cego C++ API 2.6.14
lfcxml 17.09.2010 1.0.23 Changed library install location to plain lib directory ( instead of lib/lfc )
cegodbd 17.09.2010 1.1.12 Changed cego access methods in accordance to Cego version 2.6.14
cego 17.09.2010 2.6.14 Changed library install location to plain lib directory ( instead of lib/cego ) Some adaptions for class CegoNet ( C++ programming interface )
lfcbase 17.09.2010 1.1.34 Changed library install location to plain lib directory ( instead of lib/lfc )
lfcbase 13.09.2010 1.1.34 Added NetHandler return value in Net::connect ( new connect method with timeout parameter )
dragon 05.09.2010 1.3.5 Support for lfc classes
cegodbd 05.09.2010 1.1.10 Support for lfc
cego 05.09.2010 2.6.12 Support added for lfc classes
lfcbase 05.09.2010 1.1.33 Name change to lfc ( Lemke Foundation Classes ) to avoid naming conflicts
lfcxml 05.09.2010 1.0.21 Name change to lfcxml ( Lemke Foundation Classes XML extension ) to avoid naming conflicts
cego 27.08.2010 2.6.11 Extensions of the C++ API ( CegoNet::getAffected(), CegoNet::getProcResult() ) for retrieving query and proc results
cego 22.08.2010 2.6.10 More efficient implementation of CegoDistManager::distIndexExists ( usage of native CegoTableManager methods to avoid tableset lookups avoided )
cego 21.08.2010 2.6.10 Exception handling improved in CegoXPorter Separated C-Wrapper and C++ Testprograms to samples directory
cego 19.08.2010 2.6.9 Small fixes in CegoAdmin to catch some missing command line options Added CegoTableManager::setAppend method to active append mode inside TableManager. Append mode was not activated for statement stored in stored procedures. Added CegoDistManager::distIndexExists as required method for index check in CegoSelect The method checks for an available index for the corresponding attribute and is used by CegoSelect to decide, if an attribute can be used as a TableCursor condition. Before this check was implemented, in some cases, an available index was not used. This occured, because a table cursor was created already for a different attribute for whch no index exists ( first acl match ). Increased bufferpool lock timeout, to avoid timeout exceptions for large pool configurations ( got this exception with a 3.2 GB configuration ) In CegoDefs.h /* BufferPool lock timeout in msec this was increased becasue for large bufferpool configurations, timeouts may occur during checkpoint writes */ #define BP_LOCKTIMEOUT 300000
cego 17.08.2010 2.6.8 Continue with plain dump mode. Now three export/import modes are supported: xml - readable in ascci, slow performance, appropriate for all reorganisation and propagation issues binary - binary mode, fast performance, appropriate for all reorganisation and restricted propagation issues plain - plain mode, very fast performance, appropriate for page reorganisation and restricted propagation issues, no blobs possible
cego 16.08.2010 2.6.8 Changed binary import and export to plain dump export. Restriction are blob values, which can not be exported with this method. ( rows are exported and imported as plain byte stream with no structure analysis ) This method increases import and export performance about 10 times. On my iMac with 2.66 GHz Intel Core 2 Duo, import performance is about 100k rows per second
lfcbase 15.08.2010 1.1.32 Expanded File::readLine method to specify max line len Includes fixes for debian Linux Net::connect expansion to support timeout setting
cego 14.08.2010 2.6.8 Introduction of CegoNet class to provide a more powerful C++ API
cego 13.08.2010 2.6.8 Message cleanup in CegoAdminThread for several error handling messages. Fixes on distributed queries ( drop object, create index )
cego 12.08.2010 2.6.8 Added utility script mkcgdb Added multicolumn output format in CegoOutput for better message formatting: CGADM > start tableset TS1; +-----------+---------------------+-------------------------------+ | ADM | ADM | ADM | | ROLE | HOSTNAME | MSG | +-----------+---------------------+-------------------------------+ | mediator | dude.local | Tableset TS1 must be in | | | status offline to be started | +-----------+---------------------+-------------------------------+ ERROR : Admin action failed
cego 09.08.2010 2.6.7 Append mode could not be disabled for update queries. This is fixed now.
dragon 08.08.2010 1.3.4 Small fix for exception throw message in case of parse errors.
cego 03.08.2010 2.6.6 In CegoAction::setObject123 added object name len check to avoid object names longer than MAX_OBJNAME_LEN
cego 26.07.2010 2.6.6 Added encoding for CegoFunction. This was needed for check constraints containing a function, e.g. alter table xxx add check c1 on length(b) < 10
cego 26.07.2010 2.6.5 Added encoding for CegoFunction. This was needed for check constraints containing a function, e.g. alter table xxx add check c1 on length(b) < 10
cego 24.07.2010 2.6.5 Added admin command set logmng "path" to set up log manager program interactively.
cego 23.07.2010 2.6.5 Added list check command to list all constraint checks. The drop check operation was still not implemented. Now completed. Added attribute check for create check operation. If no tuples are in the table, this avoid defintion of checks with unknown attributes.
cego 12.07.2010 2.6.4 Fix in CegoSelect::filterPredRef. For the BETWEEN-Predicate the expressions have not been filtered, which leads to unknow attribute error, if the attribute just occured in the predicate ( and not selection list )
cego 07.07.2010 2.6.4 Added admin command list object for tableset to list all objects in a tableset. Added duplicate attribute check for create table command
cego 06.07.2010 2.6.4 Small fix for admin command info tableset. GID was not indicated, TID double time.
cego 04.07.2010 2.6.3 Some more small fixes regarding tableset propagation for distributed mode. Distributed mode works, but still seems to need some exception handling.
cego 03.07.2010 2.6.3 Fixes in CegoBeatConnection, CegoMain, CegoMediatorThread for password handling. ( encrypted password was reencrypted )
cego 02.07.2010 2.6.3 Changed orderspace objects to fix pages in NOSYNC mode. This avoids forced check points in case of large sorts and small buffercache. Changed semaphore array sizes from 31 to 37 since this seems a much better value for spreading in the arrays.
cego 01.07.2010 2.6.3 Added tableset array to start up n tableset in daemon mode ( --tableset=t1,t2,t3,.... ) Added method CegoDistTableManager::stopDistTableSet for cleanup of cached objects in CegoDatabaseManager
cego 30.06.2010 2.6.3 Changed output for admin command info tableset to show the sum ( total + used ) of all data spaces ( system, temp, app )
lfcbase 29.06.2010 1.1.32 Added include of unistd.h to CommandExecuter. This was required to avoid compilation problems with Forte C compiler on Solaris/SPARC
cegojdbc 28.06.2010 1.2.20 Changed to AES encyption ready for Cego version 2.6.1
cego 28.06.2010 2.6.2 Added set counter statement to set counters to an expression value
cego 28.06.2010 2.6.1 Changed password encryption to AES
lfcbase 25.06.2010 1.1.31 Added AESCrypt encryption class
cego 24.06.2010 2.6.0 Protocol change to allow larger admin messages ( e.g. "message too long" error in case of admin command "list rec lock" and about 1000 rRecords locks are configured )
lfcbase 24.06.2010 1.1.30 Increased SIZEBUFLEN constant value in NetHandler class from 6 to 10 Note: This has impact to the network protocol ( e.g. CegoJDBC driver should be adapted )
cego 22.06.2010 2.5.16 Lock optimization made by introducing system record locks ( CegoLockHandler::lockSysRecord/unlockSysRecord ). These are record locks dedicated for records on system pages. Since these contain hot spot records ( during sustained inserts in CegoObjectManager::insertData ), often there can occur deadlocks on record locks by sustained insert and concurrent select operations. Deadlocks are avoided significantely now.
cego 22.06.2010 2.5.16 Lock optimization made by introducing system record locks ( CegoLockHandler::lockSysRecord/unlockSysRecord ). These are record locks dedicated for records on system pages. Since these contain hot spot records ( during sustained inserts in CegoObjectManager::insertData ), often there can occur deadlocks on record locks by sustained insert and concurrent select operations. Deadlocks are avoided significantely now.
cego 18.06.2010 2.5.16 Completed CegoFactor::getFieldList for function case to allow queries like select sum( date2int(a) ) from t1;
cego 17.06.2010 2.5.15 Changed exception msg to use new getBaseMsg method from Exception class.
lfcbase 17.06.2010 1.1.29 Added method Exception::getBaseMsg
cego 16.06.2010 2.5.15 Fix in CegoFactor::evalFieldValue(). Exception for select evaluation in QUERY case was not catched. So no cleanup was made for the select handle and the locked object was not released. Added drop if exists clause to grammar for drop counter statement
cegodbd 14.06.2010 1.1.8 Fix for null values. Add drop if exists clause to test scenarios to avoid error messages. Since the generation of the Cego.xsi file lead to compilation problems with gcc 4.x, this file was patches and is no more generated on the fly.
cego 13.06.2010 2.5.15 Bug fixes for encoding and decoding in CegoAttrDesc::encode() and CegoAttrDesc::decode() This was detected, since the recovery for special update queries did not work
cego 13.06.2010 2.5.14 Bug fixes for encoding and decoding in CegoAttrDesc::encode() and CegoAttrDesc::decode() This was detected, since the recovery for special update queries did not work
lfcbase 13.06.2010 1.1.37 In ThreadLock hanged strerror error message from errno ( not thread safe ) to the return code of the corresponding thread call. Changed the default value for the init method to doStat = false
lfcxml 12.06.2010 1.0.20 Shared library build patch for FreeBSD
cego 12.06.2010 2.5.13 Shared library build patch for FreeBSD
lfcbase 12.06.2010 1.1.28 Shared library build patch for FreeBSD
cego 03.06.2010 2.5.12 Command line option added for database lockfile. On default, lockfile is writte to /tmp/cego.lock since after host reboot, the lockfile should be removed.
cegojdbc 30.05.2010 1.3.2 Make some protocol adaptions required to support cego-2.9.x
cegojdbc 27.05.2010 1.3.1 Fixed some protocol bugs, which have been detected with the new protocol implementation.
cego 20.05.2010 2.5.11 Fixes in CegoMain to delete CegoDatabaseManager also for setDbUser, setAdminUser, define and create tableset mode Fixes in CegoTableManager to delete created index entries in case of a insert error. A problem may happen in case of multiple indexes on a table and for example a contraint violation occurs on a index. It was not handled, that alread insert index entries have to be rolled back ( removed )
cego 16.05.2010 2.5.11 Improvements for exception handling for procedures and exception messages
cego 15.05.2010 2.5.10 Improved deadlock resolution for concurrent ( update ) queries Some deadlocks resulted in a hanging system, since the exception handling was not clean This has been fixed and heavily tested
cego 14.05.2010 2.5.10 Introduced database lockfile to avoid startup of multiple cego processes.
cegodbd 13.05.2010 1.2.0 Adaptions made for cego-2.13 ( support of serial network protocol )
cego 08.05.2010 2.5.9 Method cleanup in CegoTableManager::insertDataTable and CegoTableManager::updateTuple. VirginIndex was added as a method parameter and the member variable was removed, since this seems to be more clean. The native method for insertDataTable using table name was removed.
cego 07.05.2010 2.5.9 Expanded update mode in CegoBlowTab
cego 05.05.2010 2.5.9 Fix in CegoMain::exportTableSet exit(returnCode) replaced with return returnCode Fix in CegoFileHandler::initDataFile, better exception handling for existing datafile
cego 30.04.2010 2.5.9 Changed system table names in CegoAction::selectTable1 to tablename without prefix since this lead to the following error for queries refering the system table attributes ( e.g. select * from $table where name like "XXX" ) CegoFactor.cc(659) : Unknown attribute field
cegodbd 02.04.2010 1.1.15 Small change for parameter binding. If a parameter position is not set up via bind_param, a null value is set for the position ( instead of error message "missing parameter at position xxx" )
cego 02.04.2010 2.5.8 Added if exists drop option for defensive object deletion
cego 26.03.2010 2.5.7 Added further functions ( mod, div, power, bitand, bitor, bitxor ) Added assign2null statement ( required for procedure calls in procedurs ) Catched division by zero in CeegoFieldValue::div Fixes bug in CegoFactor::toChain, braces have not been generated for expression case
cego 22.03.2010 2.5.7 Fix for empty result set ordering select count(*) from dab_mt where shortdesc like "ACL564%" order by mtfrom; Error : Orderspace not created, cannot insert tuple Query failed ok ( 0.007 s )
cego 16.03.2010 2.5.7 Small fix in CegoSelect::nextGroupedTuple, a return value for having-case was missing Fix in CegoOrderSpace. The fields id values are set up now with values from the orderschema. This also includes aggregation id values which are required for group ordering.
cego 16.03.2010 2.5.6 Small fix in CegoSelect::nextGroupedTuple, a return value for having-case was missing Fix in CegoOrderSpace. The fields id values are set up now with values from the orderschema. This also includes aggregation id values which are required for group ordering.
cego 13.03.2010 2.5.5 New grouping feature finsihed and tested. Fixed a bug in CegoQuery::execute. For teh INSERT_BY_SELECT case, the select handle was not cleaned up. This may lead to blocked table objects in case of using the query in stored procedures.
cego 12.03.2010 2.5.5 Changed grouping to store intermediate results rather in tem space than in memory. For this, new classes CegoGroupSpace, CegoGroupEntry and CegoGroupCursor have been introduced. CegoGroupAggregation is now obsolete.
cego 03.03.2010 2.5.5 Memory leak fixed in CegoQueryHelper::evalPredicate. flArray was allocated but not freed Changed CegoSelect::nextJoinTuple from cursor deletion to cursor reset. This improves performance for sub select queries about ten times. Here is a snapshot example: select month, count(*) from dab_mtmonth m where year = "2010" and m.pid in ( select pid from dab_prj2bgrp where bgid in ( select bgid from dab_usr2bgrp u2g, dab_user u where u2g.uid = u.uid and u.dbuser = "lemke" ) ) group by month order by month; Before: +---------------------+---------------------+ | m | AGGR | | month | count(*) | +---------------------+---------------------+ | 01 | 29 | | 02 | 75 | | 03 | 87 | | 04 | 20 | | 05 | 13 | | 06 | 16 | | 07 | 19 | | 08 | 10 | | 09 | 15 | | 10 | 19 | | 11 | 12 | | 12 | 12 | +---------------------+---------------------+ ok ( 7.349 s ) After: +---------------------+---------------------+ | m | AGGR | | month | count(*) | +---------------------+---------------------+ | 01 | 29 | | 02 | 75 | | 03 | 87 | | 04 | 20 | | 05 | 13 | | 06 | 16 | | 07 | 19 | | 08 | 10 | | 09 | 15 | | 10 | 19 | | 11 | 12 | | 12 | 12 | +---------------------+---------------------+ ok ( 0.645 s )
cego 24.02.2010 2.5.4 Replaced Timer with NanoTimer in CegoBufferPool Changed the average read/write delay calculation to avoid floating point exception Removed unnessesary seek(0) in CegoFileHandler::releasePage
cego 24.02.2010 2.5.5 Replaced Timer with NanoTimer in CegoBufferPool Changed the average read/write delay calculation to avoid floating point exception Removed unnessesary seek(0) in CegoFileHandler::releasePage
cego 22.02.2010 2.5.4 Some optimizations in CegoOrderSpace to improve order performance For this, the insertData method with sysEntry datapointer was used to avoid table lookup. Furthermore, the insertLast flag was set.
lfcxml 21.02.2010 1.0.19 Added Mac OSX support for shared libraries
cego 21.02.2010 2.5.3 Fixes in CegoOrderCursor to avoid locking and treat page claiming in the right way. Some fixes were also made for CegoIndexCursor. In addition to OrderRecordLocks, RBRecord locks have been introduced. This optimzes locking access for rollback operations. The lockstat admin command has been added to get an overall view for all locks.
lfcbase 21.02.2010 1.1.27 Added Mac OSX support for NanoTimer and shared libraries
cego 19.02.2010 2.5.3 Fixes in CegoOrderSpace::insertTupleInTree, claimDataPtr replaced with claimDataPtrUnlocked, since the access of the orderspace is exclusive and must be not locked In addition, several fixes have been added for CegoOrderSpace and CegoOrderCursor Some code cleanup detected with compiler options -Wall and -pedantic Changed lockId in CegoLockHandler from int to unsigned long to avoid overflow ( 64bit )
lfcxml 18.02.2010 1.0.18 Added method Element::hasAttribute
cego 18.02.2010 2.5.3 Null value problem fixed for datetime values. This requires xml-1.0.18 with the Element::hasAttribute method Introduced ordering record semaphores to avoid deadlocks for ordered queries
cego 16.02.2010 2.5.2 Small fix in CegoQueryHelper::getAttributeCondList, empty table string is also accepted now Fix in CegoTableCursor::getIdxSchema, the schema is stored now during setup in _idxSchema and is returned as a copy with getIdxSchema Changed JDBC info strings for index retrieval to idx / uidx ( jdbc idx ts table )
cego 14.02.2010 2.5.2 Added MAXFIXTRIES database tuning parameter
cego 13.02.2010 2.5.2 Added date2int and int2date datetime conversion functions
cego 10.02.2010 2.5.2 Fix in CegoDbHander::receiveTableData and CegoImpInStream::insertData. XML values x="" have been converted to null values, which is not really correct. This has been changed, so the type information ( STRING ) is stored together with a zero length string.
cego 05.02.2010 2.5.1 Fix in CegoDistCursor::getTuple. In case of join objects, the cursor method did not return false which may lead to an infinite loop. Fix in CegoTableObject::alterTableObject. The maxFid value was not propagated correctly.
cego 04.02.2010 2.5.1 Locking improvements in CegoObjectManager for several object access methods
cego 02.02.2010 2.5.1 Fix in CegoObjectManager::insertData and CegoObjectCursor::getObjectCursor In case of object renaming, the hashpage range was not calculated correctly which may lead to "object not found" results. Fix in CegoObjectManager::alterTableObject Index altering was not treated correctly.
cego 26.01.2010 2.5.0 Stable version finished
cego 23.01.2010 2.5.0 Strong redesign in CegoSelect and CegoDistCursor for join performance optimization and better outer join support
cego 20.01.2010 2.5.0 Further performances improvements in CegoSelect::nextJoin. The join buffer is no more copied so the evalPredicate and evalSelection use data directly. This improves performance for about 8 to 10 times.
cego 18.01.2010 2.5.0 Fix in CegoIndexCursor. Attribute condition NOT_EQUAL has not been treated correctly: create table t1 ( primary a int not null, b int); insert into t1 ... insert into t1 ... select * from t1 where a != 12;
cego 17.01.2010 2.5.0 Started with preparation for BTree index implementation.
cego 16.01.2010 2.4.9 Fix in CegoSelect. The evalViewCond flag was removed since the evaluation already is done in the CegoDistCursor
cego 16.01.2010 2.4.8 Fix in CegoSelect. The evalViewCond flag was removed since the evaluation already is done in the CegoDistCursor
cego 02.01.2010 2.4.8 Fix in CegoProcBlock. The cursorlist was not handled correctly in case of cleanup. ( drop procedure ). cursorlist was changed to a pointer list for improved cursor handling.
cego 01.01.2010 2.4.8 Fix in CegoSelect::clone. The method was still not completed since there was missing treatment for optional union select, procedure block and select preparation. The problem occured with the following query: select mid from dab_mtview where sid in ( select sid from dab_systemview where project = "XXX" ) and ( date2str(mtto, "%m") = "09" or ( date2str(mtfrom, "%m") < "09" and date2str(mtfrom, "%Y") = "2009"); The condition is transformed to conjunctive normal form which results in a cloning of the subquery. Since the cloned query was still not prepared, this results in the error: Error : Unknown attribute field Query failed from the view in the nested query Fix in CegoPredDesc::cleanUp. Conditions have not been treated yet here. This was added now.
cego 30.12.2009 2.4.7 Further join optimizations have been added for subqueries ( better evaluation of parent field list )
cego 29.12.2009 2.4.7 Memory leak fixed in CegoSelect::buildJonTables. Allocated table objects have not been released in all cases.
cego 19.12.2009 2.4.7 Fix in CegoSelect::setViewCond. The Between-mode in CegoAttrCond was still not treated here
cego 18.12.2009 2.4.7 Bug fix in CegoSelect::nextJoinTuple : The flag _indexOnViewCond was not reset to false after the setup for the table cursor was called. This may lead to invalid query results if the cursor ( the view ) is used for different setups
cego 18.12.2009 2.4.6 Bug fix in CegoSelect::nextJoinTuple : The flag _indexOnViewCond was not reset to false after the setup for the table cursor was called. This may lead to invalid query results if the cursor ( the view ) is used for different setups
cego 16.12.2009 2.4.6 Fix for distinct operator in combination with order clause, ordering in clause was ignored ( e.g. select distinct a, b from t1 order by b )
cego 15.12.2009 2.4.6 Extension for execution plan evaluation ( expr list and predicate included )
cego 14.12.2009 2.4.6 Fix for admin action list logfile
cego 13.12.2009 2.4.6 Introduction of between clause ( where a between b and c )
cego 09.12.2009 2.4.6 Extended view condition handling to support conditions on expr Sample: create view tv as select date2str(dt, "%Y") as year from t1; select * from tv where year = "2009";
cego 06.12.2009 2.4.5 Several small fixes for distribution mode ( create table, tableinfo, update and delete count ... ) Started with distributed database test suite
cego 05.12.2009 2.4.5 Small fixes for distribution mode
cego 04.12.2009 2.4.5 Distributed actions completed. Actually no more open TODOs in code
cego 03.12.2009 2.4.5 Changed inheritance from CegoRecoveryManager to member class usage This was caused, since the CegoDistManager is used by the RecoveryManager for complete recovery ( CegoDistManager is used in some predicates where select statements occur )
cego 28.11.2009 2.4.5 Table access during transaction commit phase has been restricted Read operations during transaction commit may lead to wrong results, since the tuples data is temporary inconsistent For this the method CegoTransactionManager::getTransactionAffectedTables has been introduced Complettion of distributed queries ( startTransaction, commitTransaction, rollbackTransaction, getTID )
cego 27.11.2009 2.4.5 Added numTries parameter for all locking calls in CegoLockHandler This ensures a repeated lock call try in case of any database deadlock situations
cego 26.11.2009 2.4.5 Bug fix in CegoQueryHelper::decodeUpdRec and CegoQueryHelper::encodeUpdRec The variable cwas declared as type int, should be of type char This leads at least to redo log recovery problems for SPARC versions
cego 24.11.2009 2.4.5 A bug has been fixed in CegoFunction::fromElement. Just the first expression element has been put into the expression list
cego 23.11.2009 2.4.5 Fix in CegoQueryHelper::copyBranch for CNF construction, invalid copy constructor was used for CegoPredDesc branch copy. This has been replaced by clone method. A memory problem occured for the following query select mid, date2str(mtfrom,"%d"), date2str(mtfrom,"%m"), date2str(mtto,"%d"), date2str(mtto,"%m"), sid, shortdesc, status from dab_mtview where date2str(mtfrom, "%m") = "11" and date2str(mtfrom, "%Y") = "2009" or date2str(mtto, "%m") = "11" and date2str(mtto, "%Y") = "2009" or date2str(mtfrom, "%m") < "11" and date2str(mtto, "%m") > "11" and date2str(mtfrom, "%Y") = "2009" and date2str(mtto, "%Y") = "2009";
cego 21.11.2009 2.4.4 Extension of aggregation to support full expressions. Now queries like: select b, 2 * count(*) from t1 group by b having count(*) + 1 = 2 are allowed. Fix for check constraint. check was not removed if table was dropped. Fix for long datatype error in CegoFieldValue::add,sub,mul
cego 20.11.2009 2.4.4 Added nextcount function for counter usage ( in stored procs ).
cego 06.11.2009 2.4.3 Changed admin threadinfo db operation to threadinfo db [id] This allows a better output and retrievel of last action for a specific db thread
cego 04.11.2009 2.4.3 Fixes on null value encoding / decoding
cego 03.11.2009 2.4.2 Correction of delete counter value in CegoTableManager::deleteDataTable
cego 02.11.2009 2.4.2 No-Alignment logic in encodeEVL/decodeFVL lead to problems for SPARC versions. So all pointer value assignments changed to memcpy val = *(int*)pF->getValue() changed to memcpy(&val, pF->getValue(), sizeof(int)) )
cego 01.11.2009 2.4.2 Added size attribute to system tables $table and $index
cego 30.10.2009 2.4.1 Fixed a bug for alter table rename column statement
cego 28.10.2009 2.4.1 Added drop statement for check constraints Fixed a problem in CegoQueryHelper::encodeFVL and CegoQueryHelper::decodeFVL In some cases, the decoding has not been worked correctly ( null values at the end of tuple ) The alignment has been removed and a terminating check id has been added to recognize end of tuple
cego 21.10.2009 2.4.0 Added check constraints to CegoXPorter
cego 17.10.2009 2.4.0 Fix for foreign key ( index check failed, if foreign key attribute name not equal primary key attribute name ) Fix for rename tables with foreign keys ( key was not found although the key exists )
cego 17.10.2009 2.3.12 Fix for foreign key ( index check failed, if foreign key attribute name not equal primary key attribute name ) Fix for rename tables with foreign keys ( key was not found although the key exists )
cego 14.10.2009 2.3.12 Fixed rename bug in CegoTableManager::renameTable. Table name was not set to new tablename.
cego 13.10.2009 2.3.12 Added implicit cast from int/long to bigint
cego 12.10.2009 2.3.12 Fix for alter table modify in CegoTableManager::alterDataTable
cego 03.08.2009 2.3.11 Introduction of class CegoSystemObject for management of system table like $table, $procedure, etc.
cego 30.07.2009 2.3.11 Some post corrections for the new execution plan evaluation Fixed a problem regarding query cleanup. Predicates have not been cleaned up correctly Expanded stored procedure grammar to provide initial assignment for variables ( like var i int = 42; )
cego 28.07.2009 2.3.11 Fixed a bug in the CegoDistCursor::evalCondition method. Evaluation was not done correctly. Changed execution plan to work also for empty query results.
cego 16.07.2009 2.3.10 Further optimization on join logic ( treating appropriate predicates in where-condition before joining inner and outer tables
cego 14.07.2009 2.3.9 Extension of CegoDistCursor to enable condition evaluation. Fixes made in CegoSelect for inner joins, since some queries did not return the correct result
cego 13.07.2009 2.3.9 Join optimization correction for view joins. The CegoDistCursor::distSetup returned false. This has been changed, so now the value of the _viewCondOptimized variable of CegoSelect is now returned.
lfcbase 10.07.2009 1.1.26 Added setsockopt call to Net::serve method to avoid error message "Address already in use"
cego 09.07.2009 2.3.9 Joinlists in combination with nested queries have not been treated correctly. Example: select a from t1 inner join t2 on b in ( select c from t3 ) left outer join t4 on d = 0; lead to exceeded list errors. Fixed.
cego 08.07.2009 2.3.8 Fix for view condition handling in CegoSelect ( to support view condition join optimization for aliased attributes ), e.g.: view xview as select a as Alpha from t1; select * from xview where Alpha = 1 now Alpha = 1 is mapped to a = 1 index condition, if index on a exists
cego 07.07.2009 2.3.8 Changed ordering to support attribute level ordering
cegodbd 03.07.2009 1.1.7 Improved exception handling
cego 26.06.2009 2.3.8 Added length calculation for attributes in desc command ( improved format )
cego 25.06.2009 2.3.8 Adaptions for the C-Wrapper library. Caught exception in CegoLogThreadPool, if logfiles could not be copied to archive destination
lfcxml 21.06.2009 1.0.16 Shared library support added
lfcbase 21.06.2009 1.1.24 Shared library support added
cego 20.06.2009 2.3.7 Added shared library support ( required for PHP integration ). Implementation of round function
cego 15.06.2009 2.3.7 Fixes done for tableset xml import and export. Default value handling Blob value handling Proc and view db threadpool reloading after import
cego 14.06.2009 2.3.7 Thanks to the support of Mr. Schiliro ( iworxs GmbH ) and the intensive tests with the iworxs ECM-Suite, many improvements have taken place in the current release. Improvements in the JDBC driver ( see dedicated changelog ) ROUND, LTRIM, RTRIM function added Parser modification for better handling of arithmetic expressions User function without command line args Cosmetic syntax improvements ( e.g. join as inner join ) Fixes for unique indexes There are still some open issues, we are working on.
lfcbase 14.06.2009 1.1.24 Small fix in GetLongOpt ( _isParsed flag set up in parseOpt method )
cego 11.06.2009 2.3.7 Improvements for cego mode ( distributed mode ) For tableset copies, now percentage for copy completion is now indicated ( list copy command )
lfcbase 11.06.2009 1.1.24 Added File::getShortName method for abbreviated filename retrievel
cego 10.06.2009 2.3.7 More work on new admin protocol. Added numRequest attribute to threadinfo to indicate the number pf performed request for each thread
cego 07.06.2009 2.3.7 Bug fix for grouping queries. The pGroupList was double freed in CegoAction::cleanup(). This must be avoided by setting the variable to zero void CegoAction::selectGroupClause() { _groupClauseStack.Push(_pGroupList); _pGroupList = 0; } More work on extended admin handler ( dialog messages )
cego 04.06.2009 2.3.7 Extended admin handler dialog to support intermediate information messages. First usage of the dialog has taken place for the verifyTableset admin routine
cego 03.06.2009 2.3.7 Length attribute added for desc output
lfcbase 28.05.2009 1.1.23 Fixe for command exit code in CommandExecuter class
cego 26.05.2009 2.3.5 Fixed rawmode for interactive cgadm usage Adaptions for external logmanager
cego 24.05.2009 2.3.5 Format extension to CegoOutput for better output formatting
lfcbase 24.05.2009 1.1.22 Added signal.h to SigHandler.h
cegojdbc 23.05.2009 1.2.18 Elimination of SQLClientInfoException for compliance to JRE 5
cegojdbc 23.05.2009 1.2.16 Sync to current cego version
cegodbd 23.05.2009 1.1.6 Added support for AFFECTED and MSG attribute in stmt handle
cego 21.05.2009 2.3.4 Improvements for tableset recovery. Support for external log manager added
lfcbase 21.05.2009 1.1.22 Changed in CommandExecuter from execl to execv
cego 19.05.2009 2.3.4 Some cosmetic issues in CegoDefs and exception message handling
cego 18.05.2009 2.3.3 Dramtic performance improvement for delete queries ( no reset of cursor, delete tuples in one run ) Fix for CegoObjectCursor and CegoTableCursor. Caused by performance optimizations, cursors are now aborted ( not deleted ). Abort for ObjectCursor did not reset the cursor in a correct way. reset method was introduced for resetting the cursor for next retrievel Added Ctrl-C query abort for CegoClient
cego 17.05.2009 2.3.3 Fix in CegoXMLSpace. The PR locking was not correct. Concurrent read access to Element::getAttributeValue() ist not handeled. So PR was changed to PW.
cego 12.05.2009 2.3.3 Intrduction of CegoRecoveryManager for encapsulation of recovery logic. Extension of logging for ALL-module support
lfcbase 12.05.2009 1.1.21 Extended Logger class to update already logged modules ( logModule )
cego 09.05.2009 2.3.3 Fix in CegoAction::selectTable2 ( missing assignment of _pJoinTD, which leads to problems with inner and outer joins ) Fix in CegoSelect::filterFacRef ( prepare should be called for query-factors before calling getAttrRefList)
cego 08.05.2009 2.3.3 Added code formatting for procedure code
cegodbd 04.05.2009 1.1.5 Adaptions for cego version 2.3.2
cego 02.05.2009 2.3.3 Small grammar change for JoinSpec production ( from Predicate to Condition ) This enables join spec conditions without brackets
cego 01.05.2009 2.3.2 Fixes for inner, left and outer joins Fixes for recovery ( variable handling in CegoFactor ) Added DTFORMAT parameter for date format customizing in database xml Case sensitive flag is checked in CegoAction::nextChar
lfcxml 28.04.2009 1.0.15 Added blob cdata support for stream elements ( used to store blobs ) Fix of escape bug in Element::setText method
cego 28.04.2009 2.3.2 Added blob import/export for binary mode Added module based logging ( in combination extended base Logger class )
lfcbase 16.04.2009 1.1.20 Introducion of Base64Coder class
cego 15.04.2009 2.3.2 Added quote escape mode ( oracle style ) for string values Encoding fix for blob values in CegoTableManager::encodeFVL/decodeFVL
cego 15.04.2009 2.3.1 Added quote escape mode ( oracle style ) for string values Encoding fix for blob values in CegoTableManager::encodeFVL/decodeFVL
dragon 15.04.2009 1.3.3 Small fix in generated parser code. the _isReserved flag is reset to false before starting new parse run ( in case of exception inside string handling )
cego 14.04.2009 2.3.1 Changed CegoMain from GetOpt to GetLongOpt ( new command line option conventions ) This requires base version 1.1.19
cego 13.04.2009 2.3.1 Small fixes on CegoClient in terms of logfile handling Small exception handling fix in CegoAdminThreadPool ( replaced e.print() )
lfcbase 13.04.2009 1.1.19 Small extension of Logger class to support no logging Introducion of GetLongOpt class
cego 11.04.2009 2.3.1 Introduced affected count to indicate afected rows for insert, update, delete queries Changed grammar for not-Predicate to handle unbracked conditions more friendly ( select a from t1 where not a = 1 and not b = 4 works now without any brackets )
cego 08.04.2009 2.3.0 Introduction of case-sensitive database mode for case-sensitive/insensitive string compares Fix for transactions ( introduction of transaction step ( tastep ) tuple field) Fix for distinct aggregation mode ( select distinct count(a) from t1 )
cego 03.04.2009 2.2.8 Added locale support ( evaluation of the LANG environment variable) Fix for index creation ( changed CegoDistManager::createLocalIndexTable from SHARED to EXCLUSIVE_WRITE locking ) Fix in CegoIndexManager ( ALLOW_UNIQUE_NULL Handling was wrong, which lead to a problem by updating indexed null values ) Changed to smooth handling for commit actionin case of non-active transaction ( no more error result )
lfcbase 03.04.2009 1.1.18 Fixed daylight saving setting in Datetime class Fixed DELAYFAC in Threadlock
cego 02.04.2009 2.2.8 Added locale support ( evaluation of the LANG environment variable)
cego 31.03.2009 2.2.8 Continue with db verification procedure, first table and index checks ready
cego 30.03.2009 2.2.8 Start of db verification procedure for tableset consistency verification
cego 28.03.2009 2.2.8 Added counter objects for autoincrement implementation Some code cleanup in Cego.def and CegoAction
cego 27.03.2009 2.2.8 Fixed a problem occured with ordering and grouping select statdate, sum(numhit) from webstats ws group by ws.statdate order by ws.statdate asc; The statdate attribute was not found. Fixed in CegoSelect.
cego 25.03.2009 2.2.8 Added C wrapper functions cego_putblob, cego_getblob and cego_delblob for blob handling
cego 22.03.2009 2.2.7 Blob support added with corresponding interface in CegoDbHandler putBlob getBlob delBlob Added blob check routines in CegoBlowTab
cego 14.03.2009 2.2.7 Added autocommit switch mode Added transaction isolation level switch ( read committed / read uncommitted )
cego 14.03.2009 2.2.6 Added autocommit switch mode Added transaction isolation level switch ( read committed / read uncommitted )
cego 01.03.2009 2.2.6 Added union all feature Small bugfixes for precedure return values ( missing len for decimal ) and join predicates
cego 25.02.2009 2.2.5 Quality gate B extended More exceptions catched in case of lock exceeds. Catched wrong procedure and function call including wrog return statments ( return value required for functions, return value invalid for procedures)
lfcbase 25.02.2009 1.1.17 Changed struct ExcepStruc to class ExcepStruct for correct instance assignment ( operator = )
lfcbase 25.02.2009 1.1.15 Changed struct ExcepStruc to class ExcepStruct for correct instance assignment ( operator = )
cego 24.02.2009 2.2.5 Quality gate B extended Some fixes for distinct queries were made ( used in procedures )
cego 22.02.2009 2.2.4 Quality gate checks introduced Since the quality checks are embedded in procedures, this brought up several improvements and bug fixes ( especially regarding procedure handling )
cego 20.02.2009 2.2.4 Performance improvement for update operations Introductoion of table and index reorg feature
cegojdbc 16.02.2009 1.2.18 CegoStatement::getWarnings returns null value, is warning list is empty
cego 15.02.2009 2.2.3 Improvements for transaction handling ( introduced TupleState to store transaction information for each tuple) This makes datafile structure incompatible to older releases ( export/import needed) !!! Fix for AdminThread to handle client network timeouts ( occured with new NetHandler class )
cego 14.02.2009 2.2.3 Join optimization fix for views ( view condition was not treated correctly ) Join fixes for outer joins Cosmetic improvements for sample test suite
dragon 13.02.2009 1.3.2 In some complex grammars with epsilon productions definitions, the first set calculation may lead to an infinite loop. This has been fixed with this release.
dragon 13.02.2009 1.3.1 In some complex grammars with epsilon productions definitions, the first set calculation may lead to an infinite loop. This has been fixed with this release.
cego 12.02.2009 2.2.2 C-Library completed Clean exception handling in case of deadlocks in CegoDistCursor and CegoIndexCursor
lfcbase 12.02.2009 1.1.14 Changed to dynamic message allocation in NetHandler::readMsg and NetHandler::setMsg
cego 06.02.2009 2.2.1 Added plain c-library interface
Some bugfies
cego 19.01.2009 2.2.1 Introduction of "list transaction" admin command Some performance optimizations in CegoTableManager ( to avoid redundant getObjectList calls in delete and insert methods )
cego 17.01.2009 2.2.0 Fixes on binary export Fix in CegoTableManager::deleteDataTable, foreign key check is not appropriate for update operations Syntax change for update operations ( no more braces in set clause ) Performance optimizations in CegoTransactionManager. Use of single tables rbcatlog an updtab to avoid table creation for each transaction
cego 11.01.2009 2.2.0 Started with binary export/import implementation. His should boost up the export/import performance pretty much
cego 11.01.2009 2.1.5 Started with binary export/import implementation. His should boost up the export/import performance pretty much
cego 10.01.2009 2.1.5 Tableset online check added in CegoDbThread ( for each query ) Check added for foreign keys to refer to a valid primary key
cego 08.01.2009 2.1.5 Bug fixes regarding procedure and view object reload and corresponding thread locking
lfcxml 07.01.2009 1.0.13 Small bug fix in Document::setRootElement ( catched zero value )
cego 07.01.2009 2.1.4 Changed buticket to tsticket to store complete tableset data Objects are reloaded now by all db threads in case of creating or dropping objects (views or procs) Timeout option introduced for sync tableset admin commmand Performance improvement for tableset import ( 2 times ), introduced nologging option to speed up import
cego 02.01.2009 2.1.4 Completion of alter table statements, including rename, modify and drop attribute handling Corresponding keys and indexes are treated Completion of select statement encoding and decoding for logging and distributed queries
cego 23.12.2008 2.1.3 Added class CegoCaseCond to support case-when-clauses in queries Expanded Order clause to support complete expressions in the ordering Added support for right outer join queries
cego 19.12.2008 2.1.3 Lock fix in CegoDistManager::updateLocalDataTable, lock mode changed to EXCLUSIVE_WRITE ( the EXCLUSIVE_WRITE mode was introduced in CegoDatabaseManager to allow read operations on an exclusive write lock)
lfcbase 06.12.2008 1.1.13 Added waitMsg method to NetHandler
cego 24.11.2008 2.1.2 More work on distributed queries ( insert, update, delete ) to enable predicate transfer ( fromElement, toElement methods)
cego 24.11.2008 2.1.1 More work on distributed queries ( insert, update, delete ) to enable predicate transfer ( fromElement, toElement methods)
cego 22.11.2008 2.1.1 Added CegoSelect::setViewCond feature for using index access in view queries
cego 01.11.2008 2.1.1 Completion work on CegoDistManager, including xml encoding for distributed update and delete queries ( CegoPredDesc::toElement)
lfcbase 12.10.2008 1.1.12 Changed CommandExecuter implementation ( and interface ) to support timeout
lfcbase 12.10.2008 1.1.11 Fixes for clean exit in ThreadLock::readLock and ThreadLock::writeLock
lfcbase 12.10.2008 1.1.10 Fixes for MinGW in ThreadLock
cego 11.10.2008 2.1.0 Some stability fixes for distributed mode ( execution of subsequent copy tableset commands hang up ) Added info copy feature to request status of running and finished or aborted copies
cego 30.09.2008 2.1.0 Logical logging basically works. For some special query types, the encoding and decoding still has to be implemented Admin command for tableset info retrievel expanded ( more detailed info )
cego 27.09.2008 2.1.0 Started with implementation of consequent logical logging Introduction of encode, decode and getEncodingLength methods for CegoPredDesc and members
cego 25.09.2008 2.0.12 Added missing cleanDataFile call in CegoTableManager::regDataFiles for user datafiles The missing call lead to problems in case of logfile crash recoveries The method CegoDataPointer::getEncodingLength is used now for all encoding length calculations regarding datapointer objects. As a result, the class CegoDataPointer can be modified to reduce the required dp data. Instead of 3 * 32bit ( fileId, pageId, offset ), the data might be reduced to 2 * 32 bit ( 16 bit fileId, 16bit pageId, 32bit offset ). This can be useful for larget index objects, where lots of dp references are used for the balanced tree structure.
cego 21.08.2008 2.0.12 Fixed CegoXPorter::exportTable, the output file was not closed and the handle not deleted Changed object usage from EXCLUSIVE to SHARED in CegoDistManager::createLocalIndexTable
cego 13.08.2008 2.0.12 Improved grouping attribute check for grouping queries in CegoSelect::groupTuple
cego 10.08.2008 2.0.12 Added rowlimit option for select statements to limit result rows Role abbreviation for list user admin command
cego 23.07.2008 2.0.11 Fixes in several inline functions. Introduction of randstr and randint function Added a db sesson pool in CegoDatabaseManager for managing connections from distributed queries More work on distributed queries ( list table ).
cego 19.07.2008 2.0.11 Fix in CegoTransactionManager::getRBOperation In case of heavy update operations, a timing problem could be occur with available rollback entries. To avoid this, a retry loop was introduced in getRBOperation
cego 18.07.2008 2.0.11 Catched missing command line arguments for cego in CegoMain Corrections of several functions
cego 04.07.2008 2.0.10 Fix on RBSEG creation coming with the object hash entry strategy ( no usage of hash start page )
cego 04.07.2008 2.0.9 Fix on RBSEG creation coming with the object hash entry strategy ( no usage of hash start page )
cego 03.07.2008 2.0.9 Use of ThreadLock:numLockTry method for concurrency calculation
lfcbase 03.07.2008 1.1.9 Added method ThreadLock::numLockTry()
cego 30.06.2008 2.0.9 Change list lock admin command to show specific locks Changed hash strategy for syspage objcte entry hash. Index and key objects are hashed now with the corresponding table name This avoids an expensive getObjectListByTable call in the insertTable method
cego 29.06.2008 2.0.8 Added object distribution strategy for system pages. Via Chain::getHashPos, the initial system page for an object is calculated, which leads to a spread of all objects over the whole hash system page field ( CegoDef.h : #define TABMNG_HASHSIZE 30 ) For multiprocessing environments, this should improve the parallel write access to different objects
lfcbase 29.06.2008 1.1.8 Added method Chain::getHashPos() (
cego 28.06.2008 2.0.8 Introduced rename statement for table renaming Introduced alter modify and alter rename statement for column modification ( not finished )
cego 27.06.2008 2.0.8 Value fixes in CegoImpInStream and CegoExpOutStream ( null value handling, added CegoQueryHelper::prepareFieldValue)
cego 22.06.2008 2.0.8 Changed ordering to support non-selected order attributes ( e.g. select snr from supplier order by sname )
cego 21.06.2008 2.0.8 Added role option to cego -p command line call Corrected exit codes for cgclt Fixed CegoProcBlock::toChain() exception generation
cego 20.06.2008 2.0.7 Fix in CegoTableManager::encodeFVL Null values are foced for propre encoding This bug lead to seg fault in some cases
cego 15.06.2008 2.0.7 Added insert by select statement Added lock optimization in CegoObjectManager::insertData() The system page is locked READ now and the actual object entry is locked on record level as WRTIE This leads to performance improvements in case of concurrent modifying insert operations on object located in the same system page
cego 08.06.2008 2.0.7 Completed CegoViewObject::getFormatted and CegoViewObject::putElement This avoid problems with the desc view operations
cego 07.06.2008 2.0.6 CegoIndexManager::compIndexValue corrected for null value comparison CegoQueryHelper::prepareFieldValue() fixed to check null values Completed negative value handling for several data types
lfcbase 07.06.2008 1.1.7 Bug fix in BigInteger::add method ( occured by adding negative values ) (
cego 06.06.2008 2.0.6 CegoProcVar::toChain fixed , Missing open bracket for bigint CegoQuery::toChain() fixed ( return clause for update query added )
cego 04.06.2008 2.0.6 CegoDistCursor completed. So distributed queries now work. From the secondary or mediator host, table queries are dispatched to the primary and the corresponding data is sent back This is the next milestone for the distributed Cego approach.
cego 03.06.2008 2.0.6 Expansion of interface class CegoDecodableObject. The virtual methods getElement, putELement and getFormatted have been introduced to locate XML serialization and formatted output to the corresponding object classes ( CegoTableObject, CegoProcObject ...)
cego 01.06.2008 2.0.6 New tree-based orderspace implementation finished.
cego 31.05.2008 2.0.6 Fix for unique index creation ( was not built up with unique constraint ) Multiple sent signal catched now in CegoBeatThread More tableset information provided in CegoAdminThread::medGetTableSetInfo Better implementation of OrderSpace started ( instead of linear inserts, a binary tree is used now )
cego 22.05.2008 2.0.6 Treated log loss situation. ( log connection to secondary lost ) Sync status of the tableset is set up to LOG_LOSS In this cases, the secondary should be switched ( e.g. to primary )
cego 19.05.2008 2.0.6 Introduced CegoQueryException for improved exception handling ( coming up with procedure exceptions ) Fixed a bug occured with MinGW and gcc 3.x in CegoTableManager::removeCompProcedure and removeCompView The cleanup sequence before fix: _procList[tabSetId].Remove(*pProc); CegoProcedure *pDelProc = *pProc; delete pDelProc; Before removing the procedure from procList, the procedure pointer must be deleted. The following change has been made CegoProcedure *pDelProc = *pProc; delete pDelProc; _procList[tabSetId].Remove(*pProc);
lfcbase 19.05.2008 1.1.7 Include windows.h in Chain.h to avoid MinGW compilation errors
cego 18.05.2008 2.0.5 Proceed with procedure exception handling. Basically works now
cego 16.05.2008 2.0.5 Fixed a Forte CC compatibility problem in CegoProcException ( return values missing ) Changed output format of cglog, proper objtype value for insert operations in log Added definition of buticket to define tableset administration
cego 12.05.2008 2.0.5 Fixes on backup mode, online log files have not been stored to archive location Backup mode was not handled for new db connections in CegoDbThread
cego 10.05.2008 2.0.5 Some changes made for failover handling and instance relocation Primary switch tested in case of a complete primary node crash
cego 03.05.2008 2.0.5 Added return clause to update statement to return updated values in given vars Changed update evaluation to make incrementing updates ( a = a + 1 ) work
cego 01.05.2008 2.0.5 Fixed a problem with recovery after switch ( lsn confusion ) Cleanup of cached object in CegoAdminThread::medSwitchTableSet
cego 28.04.2008 2.0.5 More work done on JDBC info requests. Column information for tables and views handled now. Data type information added.
cego 27.04.2008 2.0.4 Introduced CegoJDBCInfo class for isolation of JDBC info requests. Added support for primary key information
cego 04.03.2008 2.0.4 Fix in CegoQuery::prepareFieldValue to catch null pointer for fv.getValue()
cego 16.02.2008 2.0.4 Fix in CegoTableManager for the checkTypes method. To get the right column typ, the method is called before any tuple ( containing null value ) is retrieved. The results in a relocation of the method from checkIntegrity to updateDataTable
cego 10.02.2008 2.0.4 Fixed a bug in CegoQuery::execute occured with insert queries and incomplete attr spec list ( no null values have been added ).
cegojdbc 16.12.2007 1.2.9 Fixed some protocol problems ocured with MetaDB info requests
cegojdbc 16.12.2007 1.2.8 The JDBC driver now basically works with the SQuirrel frontend. There is still a lot of work to complete the driver implementation
cego 16.12.2007 2.0.4 Added qualifed star feature for select statement ( select tbl.* from t1 tbl ) Added several JDBC driver relevant info statements ( jdbc xxx )
cegojdbc 15.12.2007 1.2.8 Extensions and fixes to make cegojdbc work with the SQuirrel utility
cego 15.12.2007 2.0.4 Extensions for JDBC Driver implementation ( MetaDB Infos )
cego 04.12.2007 2.0.4 Added cast from Decimal to Fixed type in CegoFieldValue::castTo Fixed a field type setup bug in CegoQuery::execute in UPDATE_QUERY case
cegojdbc 02.12.2007 1.2.8 Added implementation of acceptsUrl in class CegoDriver
lfcbase 02.12.2007 1.1.7 Small correction in Timer class for ostream operator ( was sent to cout >
cego 01.12.2007 2.0.4 Fix in CegoQuery::toChain. For insert statement generation, the attribute list was missing for full qualified queries
cego 01.12.2007 2.0.3 Fix in CegoQuery::toChain. For insert statement generation, the attribute list was missing for full qualified queries
cego 21.11.2007 2.0.3 Fix in CegoTableManager::updateDataTable. For the virgin index evaluation Alter table statement now checks non-nullable columns Bug Fix in CegoTableManager::updateTuple for new update strategy
cego 19.11.2007 2.0.3 Ordering direction implemented ( asc, desc ) Alter table statement now checks non-nullable columns Bug Fix in CegoTableManager::updateTuple for new update strategy
cego 18.11.2007 2.0.3 Update redesign done. The virgin index is used for traversing the table during the update. The virgin index is an index, which is not affected during the update During the update, all changes tuple pointers are write to a update table After the update is completed, the update is completed for the virgin index This leads to a consistent table view after each update operation
cego 18.11.2007 2.0.2 Update redesign done. The virgin index is used for traversing the table during the update. The virgin index is an index, which is not affected during the update During the update, all changes tuple pointers are write to a update table After the update is completed, the update is completed for the virgin index This leads to a consistent table view after each update operation
cego 17.11.2007 2.0.2 Parameter consolidation of CegoIndexManager::insertNativeIndexTable() and insertIndexTable Preparation for update transaction redesign ( virgin index strategy )
cego 12.11.2007 2.0.2 Type check added for update operations ( CegoTableManager::checkTypes() ) This avoids tuple update to invalid field types
cego 11.11.2007 2.0.2 Further problem with transaction. The idxOnCommit flag was not handled in case of transaction recovery This has been fixed introducing a new log record type LOGREC_IDXCOMMITON and LOGREC_IDXCOMMITOFF
cego 10.11.2007 2.0.2 Detected a problem with recovery in combination with transactions The commit operations call the method CegoTableManager::deleteDataTable This results in a duplicate delete entry in the logfile which crashes the recovery
cego 08.11.2007 2.0.2 Fixed CegoSelect::analyzeJoin(). Just for straight subselect the analyze worked. The CegoPredDesc::analyzeSelect method was introduced for recursive subselect analyze The corresponding part in CegoSelect::analyzeJoin was changed to if ( _pPred ) { _pPred->analyzeSelect(); }
cego 07.11.2007 2.0.2 Hanging export in case of exporting empty table. This was a problem in CegoExpOutStream::getNext which was called after the getFirstTuple method already had returned a false value. Missing idempotence was fixed in CegoObjectCursor::getFirst() and getNext by checking the introduced _isEOC flag Added further locking information ( lockcount ) for lock listing in cgadm Fixed CegoFactor::evalFieldValue() for QUERY-Type factors in case of selection-select in views ( select was not prepared, added _pSelect->prepare() )
cego 04.11.2007 2.0.1 Fixed some problems occured with primary and unique index violation on update operations For this, the CegoTableManager::checkIntegrity was introduced and called before any update In stored procedures, the procedure variables have not been resolved correctly in delete and update predicates ( where condition ). This has been fixed User roles and user tracing has been introduced
cego 29.10.2007 2.0.1 Proceed on procedure exceptions
lfcbase 28.10.2007 1.1.6 Small extension in Chain::asBool for true/false token handling Extension in Tokenizer::nextToken for handling zero length input
cego 27.10.2007 2.0.1 Some fixes for outer joins Fixes for CegoFactor::evalField() to indicate proper attribute headers ( select count(*) ) Introduced user roles
cego 20.10.2007 2.0.0 Fixed some attribute management problems in CegoExpr::evalField Added unloadObject and friends to CeegoDbThreadPool for procedure and view cleanup in case of stopping ts
cegojdbc 14.10.2007 1.2.0 Fixed some bugs in network protocol Added some more exception handling Introduced log4j
cego 14.10.2007 2.0.0 Fixed some bad deadlock effects occured with views and procedures Fixed some memory leaks occured with procedures Fixed alias handling for view management
cego 13.10.2007 2.0.0 Fixed some foreign key problem with update operation Fixed ordering problem occure with Solaris memory alignment ( CegoOrderEntry was not alignment save)
lfcxml 09.10.2007 1.0.12 Added newline to getXMLChain methods and the end of export
cego 07.10.2007 2.0.0 Since first basic distributed functions work, switch to version 2.0.0 is done ( alpha )
cego 03.10.2007 1.4.3 First switch cycle basically works ( switch -> relocate secondary -> copy -> switch -> relocate secondary -> copy )
cego 29.09.2007 1.4.3 Online tableset copy basically works now ( medCopyTableSet )
cego 28.09.2007 1.4.3 Preparations for 2.0. this includes mediator services and improvements for tableset copy/recovery actions
cego 23.09.2007 1.4.2 Some corrections for MinGW and CegoAdm
lfcbase 20.09.2007 1.1.5 Changed NetHandler::SIZEINFOLEN to 6 to handle larger messages Please note : This is made in correlation to newer versions of Cego JDBC and CegoADM !!!
lfcxml 16.09.2007 1.0.11 Changed Element constructor for explicit reference count defintion ( to avaid memory leaks )
cego 16.09.2007 1.4.1 Elimination of some memory leaks. This also leads to a new version of the XML library ( 1.0.11 ) Improved casts on datatypes
cego 15.09.2007 1.4.1 Correction of transaction concurrency access strategy. If a transaction has touched any tuple, the tuple is still readable from another transaction but no more writable. This is realized using the ignoreTouched flag in CegoTableCursor and CegoIndexCursor
cego 12.09.2007 1.4.1 Small corrections for CegoAdm GUI
cego 09.09.2007 1.4.0 Started with select outer join feature implementation
lfcbase 09.09.2007 1.1.4 Modifications and extensions of the Chain:posStr method for negation and occurence search
cego 08.09.2007 1.4.0 More fixes regarding new query features Fixes regarding stored procesdure Fixes regarding concurrency
cego 03.09.2007 1.4.0 Tests and bug fixes for 1.4.0
Views still need some work ..
cego 02.09.2007 1.4.0 Syntax extension for query predicate expressions ( instead of native attribute ) QueryPredicate: Expr INTOK LB SelectStatement RB QueryPredicate: Expr NOT INTOK LB SelectStatement RB QueryPredicate: Expr Comparison Expr QueryPredicate: Attribute IS NULLTOKEN QueryPredicate: Attribute IS NOT NULLTOKEN QueryPredicate: Expr LIKE STRINGVAL QueryPredicate: Expr NOT LIKE STRINGVAL This provides more powerful queries with full expression support
dragon 28.08.2007 1.3.0 Completed LALR parse analysis. As expected, analyse performance increases dramatically and generated parse table shrinks to about 15-20% ( based on generated Cego parser ) Still have to check out if generated code is correct and useful
dragon 27.08.2007 1.3.0 Started with implementation of LALR parse analysis.
lfcbase 26.08.2007 1.1.3 Some small platform adaptions (FreeBSD) in configure script and for NanoTimer
cego 25.08.2007 1.3.3 Added lock id information to lock monitor methods Completed extended table spec defs
cego 23.08.2007 1.3.3 Added extented table spec to grammar def ( table@tablset ) Fixed remove user / passwd user operation
cego 23.08.2007 1.3.3 Added extented table spec to grammar def ( table@tablset ) Fixed remove user / passwd user operation
lfcbase 23.08.2007 1.1.2 Introduction of class NanoTimer
cego 22.08.2007 1.3.3 Changed hashId calculation to avoid concurrency for page 0 access for different tablesets ( Changed hashId = ( (fileId+1) * (pageId+1) ) % _numPage ) Introduced lock monitor admin service for analysing locking effects
cego 18.08.2007 1.3.3 Completed recovery issues and other open issues for 1.3 Added -mthreads link option for MinGW. This is required for a proper exception handling in multithreaded applications
cego 17.08.2007 1.3.3 Added lower, upper and trunc function Completed import- and export table operations ( single table and structure )
cego 16.08.2007 1.3.3 Use of non-timeout locks in CegoXXXThreadPool to avoid locking timeout errors
cego 15.08.2007 1.3.2 Cego runs pretty stable on Windows. This requires new base library version 1.1.0
cegodbd 13.08.2007 1.1.2 Adaptions for modified enumerations in CegoDbHandler
cego 13.08.2007 1.3.2 Further bug and stability fixes for mediator services and online backup mode Elimination of os dependent code and compile-ready-state with MinGW ( Windows )
lfcbase 13.08.2007 1.1.1 Added base for support of MinGW windows suite ( some features still missing ) For this, just small modifications have take place ( mainly in Thread, ThreadLock, Net and SigHandler ) Renaming of Signal to SigHandler class ( to avoid name conflicts occured with windows )
lfcbase 13.08.2007 1.1.0 Added base for support of MinGW windows suite ( some features still missing ) For this, just small modifications have take place ( mainly in Thread, ThreadLock, Net and SigHandler ) Renaming of Signal to SigHandler class ( to avoid name conflicts occured with windows )
dragon 12.08.2007 1.2.11 Added escape token for special regular expressions containing reserved control characters
dragon 11.08.2007 1.2.11 With GNU C compiler 3.4.6, a segmentation fault occured with large parse tables To avoid this problem, the option -y has been introduced to generate parser code with dynamic allocated parse tables
cego 08.08.2007 1.3.1 Proceed with user documentation. Several small fixes for mediator services
cego 07.08.2007 1.3.1 Small bugfixes for new mediator services. Fixed a locking problem in CegoXMLSpace
cego 05.08.2007 1.3.0 Syntax consolidation for query and procedure expressions done. This results in a more powerful grammar to provide more advanced features in stored procedures ( e.g. function calls )
cego 29.07.2007 1.2.1 Cleanup work for the online backup features and CegoAdmin
lfcbase 29.07.2007 1.0.18 Added trunc method to File class
cego 28.07.2007 1.2.1 Tested online backup mode feature and fixed some problems.
cego 22.07.2007 1.2.1 Added online backup mode features to CegoFileHandler. As a result, reorganisation of class inheritance regarding CegoXMLSpace was needed ( now CegoLogManager is derived from CegoXMLSpace ) The online backup feature is a prerequisite for the mediator copy tableset function
cego 21.07.2007 1.2.1 Completed XML Space isolation. Now all shared XML space operations are synchronized via CegoDatabase Managaer
cego 15.07.2007 1.2.1 More work on mediator services for adding archive logs, adding datafiles, getting tableset info. Proceed with cgadm online help Basic mediator services work ( including recovery on secondary ): define, create, copy, start, stop, add user, add archlog, add datafile
cego 14.07.2007 1.2.1 Adaptions for 64 compiles for SPARC/Forte C More work on online help for cgadm console client
lfcbase 14.07.2007 1.0.17 Defintion of REENTRANT in some classes for thread safe valid strerror information Introduced base class Sleeper
lfcbase 14.07.2007 1.0.17 Defintion of REENTRANT in some classes for thread safe valid strerror information Introduced base class Sleeper
cego 11.07.2007 1.2.1 Adaptions for cgadm console interface for new mediator services Bug fixes in CegoXMLSpace::addTableSetDef
cego 08.07.2007 1.2.0 Distributed tableset definition for mediator, primary and secondary implemented and tested ( Med Services medDefineTableSet and medRemoveTableSet ) Since there are several mediator service spec extensions, I decided to switch to version 1.2
lfcxml 07.07.2007 1.0.9 Added createClone method to class Element
cego 07.07.2007 1.1.2 Introduced CegoDatabaseManager class derived from CegoBufferPool. CegoGlobalSpace has been renamed to CegoXMLSpace This is a cleanup step to achive a better isolation and straight locking of the thread global space
cego 04.07.2007 1.1.2 Introduced statStart parameter for reset of statistic counter in buffercache. Fixed some bugs with n ew mediator services. Changed shutdown procedure of daemon to shut down all active tablesets. Completed switch and copy mediator confirmation widgets. Tomorrow back in germany
cego 03.07.2007 1.1.2 Proceed with med service implementation. Corrections made for batch import mode in combination with archive mode ( since the LogThreadPool was not started up, no arching took place and import has blocked on occupied redo logs ) Added hitrate, readDelay and writeDelay indicators to BufferCache info
lfcbase 03.07.2007 1.0.16 Extended Timer base class for recording time usage summary
cego 02.07.2007 1.1.2 Fixed some bug fixes occured with multi tablesets. Introduced major mediator services for tableset transistion states DEFINED, OFFLINE_SYNCHED, OFFLINE_NOT_SYNCHED, ACTIVE_SYNCHED, ACTIVE_NOT_SYNCHED, ON_COPY
cego 01.07.2007 1.1.2 Redesign of tableset dialog widgets. Since this can be done using JOptionPane in a convenient way, I changed all dialog widgets to this class.
cego 30.06.2007 1.1.2 More work on creating, dropping and removing of tableset via admin gui CegoAdm
cego 29.06.2007 1.1.2 Cleanup of CegoAdminThread, isolation of service request code to decicated srv* methods. Adding new service for definition of tablesets
cego 28.06.2007 1.1.2 Trip to turkey :) More work on cgadm online help, some cosmetic changes on gettablesetinfo operation
cego 27.06.2007 1.1.2 Completion and online help of console based cgadm
cegodbd 26.06.2007 1.1.1 Adaptions for relocated network classes Net and NetHandler in base 1.0.16
cegodbd 26.06.2007 1.1.0 Tests of DBD-cego on Solaris x86. Some little problems with Makefile.PL finish call required for statements
cego 26.06.2007 1.1.2 Fixed a bug occured with distinct option and select * Fixed a bug for correct function/procedure load Added procedure and function cache for faster procedure execution
cego 26.06.2007 1.1.1 Fixed a bug occured with distinct option and select * Fixed a bug for correct function/procedure load Added procedure and function cache for faster procedure execution
lfcbase 26.06.2007 1.0.16 Relocation of CegoNet and CegoNetHandler utility classes to Net and NetHandler base classes
cego 24.06.2007 1.1.0 It seems, there are some compiler problems with Mac OS X 10.4.10 and gcc 4.0.1 With the current update, cego crashes during select in a thread with a strange behaviour also in gdb Perhaps Xcode 2.4.1 might help ... Anyway, for 2.x multinode development, switch of development platform to Solaris is required Added buffer cache disk read/write information to BufferPool::poolInfo and CegoAdm GUI
cego 23.06.2007 1.1.0 Added distinct option Fixed a bug in CegoObjectManager. The locking mode was not initialized correctly for the persistent required system pages This problem was detected on Solaris x86 since table dictionary page was not fixed persistent Fixed a bug in CegoIndexCursor occured with select * from t1 where a > 10000, In case of double index entries with value 10000, the query returned zero result tuples Added dbthread abort service for admin thread. Long running queries may be aborted by this service
lfcbase 23.06.2007 1.0.15 Added lockDelay parameter to ThreadLock::ThreadLock constructor for appropriate delay configuration This is needed to optimize CPU utilization
cego 21.06.2007 1.1.0 Added db thread state connected for more detailed information about db threads ( READY, CONNECTED, BUSY ) Completed sub select queries ( = select , in select , not in select ) and null/not null-Predicate
dragon 18.06.2007 1.2.10 Optimization for generated code done. Now parse table is loaded in a static array which leads to a dramatically improved startup performance Startup time has been observed 7 times faster for large parsers and parallel load ( Cego with 1640x132 x 30 threads : dynamic = 7 min startup, static = 1 minute startup )
lfcxml 18.06.2007 1.0.8 Improved performance with new created parser ( dragon 1.2.10 )
cego 18.06.2007 1.1.0 Increased performance with new optimized dragon 1.2.10 generated parser ( about 50% ) The performance benefit results from the improved XML handling but also the native Cego SQL parsing
cego 17.06.2007 1.1.0 Bug fixes for protocol change ( occured Solaris ). Tests for logfile shipping continued. Since I have a Solaris x86 based host up and running, multi node testing can be done by using Solaris zones
cegojdbc 16.06.2007 1.1.0 Adapted driver for network protocol change
cego 16.06.2007 1.1.0 Network protocol change. Now msg size is transferred at the beginning to provide larger messages
dragon 15.06.2007 1.2.9 Some optimization done for analysing performance Changed some call-by-value method parameters to call-by-reference ( Dragon::getJump, FirstHast::getFirstSet and Dragon::getClosure ) This lead to about 7% performance improvement
cego 14.06.2007 1.0.12 More work on distributed stuff for version 2.x. TableSet copy and remote logging tested
cego 12.06.2007 1.0.12 Preparation work for version 2.x Some cleanup of CegoGlobalSpace and mediator connection tests from other machine
lfcbase 10.06.2007 1.0.14 Added Chain::setChar to set character value in string Since the crypt system library routine seems to differ on several unix systems ( at least Mac OS X, Linux , Solaris ), I changed the Crypt class to native crypt algorithm implementation as given from Eric Young ( Thanks Eric ! )
cego 09.06.2007 1.0.12 More work on CegoAdm Java GUI Fixed some occured incompatibilties and added threadInfo panel Fixed a problem occured on Linux in CegoXThreadPool::nextRequest: CegoNetHandler **pRequest = _requestQueue.First(); if ( pRequest ) { _requestQueue.Remove(*pRequest); CegoNetHandler *pN = *pRequest; unlockQueue(); return pN; } to CegoNetHandler **pRequest = _requestQueue.First(); if ( pRequest ) { CegoNetHandler *pN = *pRequest; _requestQueue.Remove(*pRequest); unlockQueue(); return pN; } Heavy insert + index creation tests on Linux ( OpenSuse, TableSize : 6 * 10^7 ) System runs stable
lfcxml 08.06.2007 1.0.8 Reference count bug fix
cego 07.06.2007 1.0.12 Adaptions for 64bit support ( Solaris x86 )
Added threadinfo in CegoAdm
lfcbase 06.06.2007 1.0.14 Fixed Chain::asShort method format string ( %d to %hd)
cegojdbc 03.06.2007 1.0.4 Added valid resultset for executeQuery calls with any update query
cego 03.06.2007 1.0.12 Changed XML_CEGOERROR_DOC to XML_ERROR_DOC
dragon 28.05.2007 1.2.9 Added Exception throw to nextChar and shiftToken methods
dragon 06.05.2007 1.2.8 Tests of Java code generation for Tracx parser finished Public release
dragon 28.04.2007 1.2.8 Fixes for Java code generation
cego 18.04.2007 1.0.12 Preparation for further subselect queries ( in, not in, subquery comp ) Proceed with user documentation
cego 17.04.2007 1.0.12 Implementation of string functions instr, locate, replace, substr, length Some fixes for null values in CegoDbHandler
lfcbase 17.04.2007 1.0.14 Extended posStr method with start position ( class Chain )
lfcbase 16.04.2007 1.0.14 Added posStr method to Chain class
cego 15.04.2007 1.0.12 Some reorganisation of CegoSelet::getFacField and friends This is still no clean solution. All function evalation should be capsulated Parser preparation for further string functions instr, locate, replace, substr, length
lfcxml 14.04.2007 1.0.7 Improved error message in case of XML syntax errors Public release
cego 14.04.2007 1.0.11 Alter statement basically works ( adding and removing columns ) Some corrections for datatype handling in CegoOutut and CegoDbHandler class First public beta release.
cegodbd 13.04.2007 1.0.2 Completed procedure out-parameter handling Added corresponding test 09bindinout
cego 13.04.2007 1.0.11 Fixed out-parameter handling for stored procedures Now out parameters are registered implicit if not already set up in masterblock This is useful for calling procedures via DBD or JDBC driver Proceed with alter query implementation. Introduced CegoAlterDesc as container class
lfcxml 11.04.2007 1.0.7 Some adaptions to the configure.ac file ( for multithreaded compile on Solaris )
cego 11.04.2007 1.0.11 Some adaptions to the configure.ac file Some performance improvements for table inserts CegoTableManager::insertDataTable without table-lookup has been introduced.This saves one call of CegoObjectManager::getObject() Some fixes and performance improvements regarding log file recovery Proceed with user documentation
lfcbase 11.04.2007 1.0.13 Public release
lfcbase 11.04.2007 1.0.13 Some adaption to the configure.ac file
cego 10.04.2007 1.0.11 Some Solaris related fixes. Tested the ZFS based online concept. It works.
cego 09.04.2007 1.0.11 Null values have not encoded correctly CegoTableManager::encodeFVL The problem was fixed there. Proceed with user documentation
cego 08.04.2007 1.0.11 Some fixes for online backup and subsequent recovery Now online backups are possible ( using the checkpoint escape command ) and complete recovery can be performed using the cgadm recovery commands
cego 07.04.2007 1.0.11 More work on backup and recovery. This results in some rework of the checkpointing and logile handling methods Archive log mode basically works
lfcbase 07.04.2007 1.0.13 Introduced CommandExecuter class
cego 06.04.2007 1.0.11 Added pidfile to access pid of current running cego daemon Implementation of local archive logs in CegoLogThreadPool::shiftRedoLogs started Added synchronization command for cgadm. An escape command argument can be given to the sync command This can be used to perform a backup of the datafiles for online backup. ( better : use Solaris ZFS snapshots to minimize buffer pool locking time )
cego 04.04.2007 1.0.11 Completed client library for stored procedure return and out parameter retrievel ( CegoDbHandler::getProcResult )
cegodbd 03.04.2007 1.0.1 Implemented transaction handling Added more test cases
cego 03.04.2007 1.0.11 Introduced type map in CegoDataType ( for better type mismatch error message ) Fixed type check in CegoQuery::execute ( Insert case ) Catched Cntrl-C in cegoclt
lfcbase 03.04.2007 1.0.13 Corrected return value in File::readLine() to the right number of bytes read ( i + 1 ) Added lock timeout information to ThreadLock::writeLock and ThradLock::readLock
cego 01.04.2007 1.0.10 Basic implementation of the DBD driver is done ( connection, execution, fetching, parameter handling works ) See cego DBD blog for more information. The DBD implementation required some cleanup operations of the cego client library ( isolation of server only methods to derived CegoGlobalDbHandler class ) Public release Please note: Since there was missing a header include in some modules, the release was corrected and uploaded again. If you have some compile problems, please download again.
cego 31.03.2007 1.0.10 Started with implementation of perl DBD driver. Derived the required code from the SQLite driver implementation. Since a C++ class usage is required, the XS code has patched a lot ... C++ integration together with DBI includes seems to work DBI connect to cego db works
cego 30.03.2007 1.0.10 Fixed writeAllow logic in BufferPool
cego 26.03.2007 1.0.10 Changed update statement to treat expressions Update statement generation for stored procs fixed Import/export of empty tables fixed ( added empty stream row element ) Fixed a problem with lock leak procedure cursor After proc block termination, cursors have not been cleaned up
cegojdbc 25.03.2007 1.0.3 Changed authorization protocol for cego db version 1.0.9 Public release
cego 25.03.2007 1.0.9 The update statement did not work correctly. Some redesign of the update algorithm was required. To avoid any temporary conflicts with existing unique indexes, we force a transaction now, wherein the update occurs ( subsequent delete and insert )
lfcbase 24.03.2007 1.0.12 Changed Chain::toUpper and Chain toLower to const methods Added asShort and asChar conversion methods
cego 22.03.2007 1.0.9 BufferPool optimization for creating large index tables : Instead of writing a checkpoint, dirty pages are written to datafile. To avoid data inconsistency, this is just allowed in case of index creation. Reduced BUPMNG_MAXFIXTRIES parameter from 100 to 25. This improved performance dramatically. As a consequence, buffer cache filling rate has been reduced.
lfcbase 20.03.2007 1.0.12 Fixed timeout calculation in ThreadLock class. Catched nanosleep exception.
cego 18.03.2007 1.0.9 Added drop statement for foreign keys Bug fixes on foreign key handling Bug fixes on import/export handler
cego 17.03.2007 1.0.9 Added view and proc objects to import / export Introduced libCego as a client library Isolated Import and export to CegoXPorter
lfcxml 16.03.2007 1.0.6 Public release
cego 16.03.2007 1.0.8 Public release
lfcbase 16.03.2007 1.0.11 Public release
cego 12.03.2007 1.0.8 More work on user management. Admin users introduced.
cego 12.03.2007 1.0.8 Proceed with user management. Basic management works
cego 11.03.2007 1.0.8 Moved fkey check in CegoTableManager::insertTableData after tuple insert to treat self refering foreign keys ( same table, same row ) Added fkey check at foreign key creation time Added admin feature to add new datafiles Fixed thread termination synchronization for database shutdown ( Joining db, log and admin threads after terminate signal ) Started with user management
lfcbase 11.03.2007 1.0.11 Add Crypt class for key encryption
lfcxml 07.03.2007 1.0.6 Bug fix in XMLSuite::nextChar(). Added moreData call after scanning " character for string values This bug lead to empty attribute values in some special cases "
cego 06.03.2007 1.0.8 Another work on import/export Export and import for tables, indexes and foreign keys basically works
cego 06.03.2007 1.0.8 Another work on import/export Export and import for tables, indexes and foreign keys basically works
cego 05.03.2007 1.0.8 Started with import/export admin features. This requires added streaming features in the XML suite New streaming classes CegoExpOutStream and CegoImpInStream introduced Rework of CegoAdm done Basic XML tableset export works now
lfcxml 05.03.2007 1.0.6 Eliminated newline in XML chain in case of empty content Added classes XMLInStream and XMLOutStream as super classes for user controlled stream handling This is useful to handle huge amount of input or output data
cego 04.03.2007 1.0.8 Small fix in CegoSelect to correct group aggregation values Small fix in CegoFieldValue copy constructor to set _pV to 0
cego 04.03.2007 1.0.7 Small fix in CegoSelect to correct group aggregation values Small fix in CegoFieldValue copy constructor to set _pV to 0
cego 03.03.2007 1.0.7 Fixes on index deletion algorithm. In case of non-unique index values, wrong entries have been removed This has been fixed by comparing the datapointer for the data tuples. This is implemented in the method CegoIndexManager::searchDataPointer() Changed MINFREE to dynamic MINFREERATIO in CegoDefs.h and CegoBufferPage to avoid minfree exceptions Modified cegoblow to blow arbitrary queries ( insert / delete ) and also to generate sql-load file ( if hostname and port arguments ommitted ) Public release
cego 28.02.2007 1.0.6 Testing of new index deletion algorithm Added some missing releaseDataPtrUnlocked calls to avoid buffer fix leaks Public version released
lfcbase 28.02.2007 1.0.10 Public version released
cego 26.02.2007 1.0.6 Since in case of index entry deletion, it is not enough to propagate the decrease of a subnode to its parent, a new method CegoIndexManager::propagateRotation was added. RL-Rotations may lead to unbalanced subnodes, which may be treated in a dedicated step. Deletion of index entries in AVL trees seems to be pretty complicated ... To handle the rebalancing during index deletion, the method propagateRotation was extended and renamed to rebalanceNode Now all rebalancing analysis and treatment for any unbalanced node situation is managed by this method Basically works ! Fixed the count(*)-NULL bug. ( NULL is printed for count(*) = 0 )
cego 25.02.2007 1.0.6 Fixed index value handling for null values. For this, the length of the data field is stored with the index field value Fixes a bug in group aggregation ( first aggregation was not handled ) There seams to be a bug in the index deletion algorithm. This occured by testing the new index value handling Fixed some of the problems in CegoIndexManager::deleteIndexTableData. There are still some open problems regarding index balancing ...
cego 19.02.2007 1.0.6 Some bug fixes on the improved join construction Corrections done for null value handling in class CegoFieldValue und CegoDbHandler Proceed with HTML guide
cego 18.02.2007 1.0.6 Improved join performance achieved by extended CegoAttrCond class Now select queries like "select count(*) from t1, t2 where t1.a=20 and t1.a = t2.a;" will use index a on t1 and t2. Index search value for table t2 is set up during the join after evaluating t1.a value An execution plan may look like plan select * from t1 , t2 where t1.a=42 and t1.a = t2.a; Execution Plan : Joining t1(t1_1) IndexCondition -> a = 42 Joining t2(t2_2) IndexCondition -> a = t1_1.a ok ( 0.003 s )
cego 17.02.2007 1.0.6 OrderSpace implementation basically works Added plan statement to show select execution plan
cego 12.02.2007 1.0.6 Started with OrderSpace implementation ( for tuple ordering in select query) This requires three new classes called CegoOrderEntry, CegoOrderSpace and CegoOrderCursor
cego 11.02.2007 1.0.6 Grouping clause basically works ( without having )
lfcbase 11.02.2007 1.0.10 Added operator == to ListT
cego 10.02.2007 1.0.5 Redesign of CegoSelect::nextTuple and CegoSelect::evalSelection to prepare for grouping clause Public release
lfcbase 10.02.2007 1.0.9 Public release
cego 09.02.2007 1.0.5 Fixed int-alignment in CegoIndexEntry and CegoFieldValue ( detected on HP/UX )
lfcbase 09.02.2007 1.0.9 Fixed BigDecimal constructor
lfcbase 08.02.2007 1.0.9 Catched in Chain::truncLeft and Chain::truncRight method zero truncated strings ( Chain("0000").truncLeft("0") )
cego 07.02.2007 1.0.5 Syntax extension for group by and order clause Started with design of grouping
cego 04.02.2007 1.0.5 Proceed with module cleanup ( 65 / 75 treated ) Fixed missing joinbuf reference for like-clause attributes ( problem, if the atribute does not appear in selection list ) Exception throw for unknwon attributes ( was ignored ) : select foo from t1 Module cleanup finished
cego 03.02.2007 1.0.5 Several fixes for new locking policy Transactions now are mainly working, rollback after db crash still not handled Completed date2str function implementation HTML documentation extension regarding transactions
lfcbase 03.02.2007 1.0.9 Treated empty patterns in Matcher::match method Some bug fixes on new ThreadLock class Added tzset() call to Datetime class for correct timezone setting
cego 30.01.2007 1.0.5 Introduced defensive locking with r/w-locks and locking timeout support for deadlock situation
lfcbase 29.01.2007 1.0.9 Added class ThreadLock for better thread lock handling inclusing read/write locks and lock timeouts
lfcxml 28.01.2007 1.0.5 Proper format returned by XMLSuite::getXMLChain method. Whitespaces in content are stripped and the tag structure of the xml tree is mapped to an appropriate output format
cego 28.01.2007 1.0.5 Reactivation of transaction functions Provided dump function to dump any user, system or rbseg table to client
cegojdbc 27.01.2007 1.0.2 Started HTML documentation of the driver Small fixes in CegoStatement class Fixed function return value handling
cego 27.01.2007 1.0.5 Added "fixed" datatype ( used for currency ) Public alpha release of version 1.0.4
cego 27.01.2007 1.0.4 Added "fixed" datatype ( used for currency ) Public alpha release of version 1.0.4
lfcxml 26.01.2007 1.0.4 Fixed Element::getXMLText to use XMLEscaper Fixed XMLEscaper
lfcbase 26.01.2007 1.0.8 Fixed some bugs in Chain::replaceAll Public release
dragon 24.01.2007 1.2.7 Catched missing grammar defintion in Main Clustered parser table load in generated C++ code for better compile performance Indent format corrections in generated code
lfcxml 22.01.2007 1.0.4 Added XMLEscaper class for consolidated escape character treatment
lfcbase 22.01.2007 1.0.8 Added Chain::replaceAll method for faster string replacement Added #define _XOPEN_SOURCE_EXTENDED in Net.cc fro HP/UX portability
cegojdbc 20.01.2007 1.0.1 Further tests of the Driver during development of the jacc sample application Added BigDecimal handling Fixed function return value handling
cego 20.01.2007 1.0.4 Several bugs fixed regarding procedures and functions, occured by developing the Cego sample application Jacc
cego 20.01.2007 1.0.4 Several bugs fixed regarding procedures and functions, occured by developing the Cego sample application Jacc
lfcxml 19.01.2007 1.0.4 Fixed a bug in XMLSuite::nextChar(). moreData must not return next char to scanner ( this fails in case of quote-characters as the first sign ) Rather, a surrounded while-loop leads to the further input handling Exception is catches in case of exceeding content buffer
cego 16.01.2007 1.0.4 Integration of decimal data type
cego 15.01.2007 1.0.4 Proceed with user guide change primary index create statement ( primary index name is now alway + _pidx )
dragon 14.01.2007 1.2.6 Minor corrections in error messages Public release
lfcxml 14.01.2007 1.0.3 Public release
cego 14.01.2007 1.0.3 Test of the new indexmanager
Public release
lfcbase 14.01.2007 1.0.7 Added Chain::isDec method Introduced class BigDecimal Public release
cego 13.01.2007 1.0.3 An ugly bug took me almost 2 days to fix. In CegoIndexManager::insertIndexTable, the index entries have not been claimed and released This lead to an corrupted index, but just in case of page relocation of the buffer bool
cego 11.01.2007 1.0.3 Index build with height logic now works ( deletion still to do ) Introduced a check index command to verify consistency of index
lfcbase 10.01.2007 1.0.7 Change in Exception class to provide error information without module location semctl call correction in Semaphore classs
cego 08.01.2007 1.0.3 Redesign of CegoIndexManager. Since after node rotation, the balance values of the index entries could not be set obviously to correct values, I decided to switch from three value balance attribute to height value of subtree. This involves some code changes in CegoIndexEntry and CegoIndexManager
lfcxml 06.01.2007 1.0.3 Handling of excape sequences ( for < sign ) in Attribute::setValue and Attribute::getValue method
cego 06.01.2007 1.0.3 Proceed with user guide Changed procedure variable reference syntax for assign statements and proc call statements Fixed a locking bug in CegoGlobalTableManager::createLocalIndexTable
cego 05.01.2007 1.0.3 Added procedure variable evaluation for select statement Procedure vars now are referenced with the colon sign to distinguish from table attribute references Fixed a locking bug occured by dropping procedures Proceed with user guide
cego 04.01.2007 1.0.3 Cego protocol file ( cego.log ) now customizable via command line argument Changed thread pool queue locking to dedicated semaphores Now NETMNG_SELECT_TIMEOUT in CegoDefs.h set to 1500000 Fixed a bug in CegoGlobalManager::updateLocalDataTable , update schema was not set up correctly for index based updates Fixed a bug in CegoProcFetch::fetch, proc variable was net set up correctly
cego 03.01.2007 1.0.3 Small fixes on cgclt Heavy tests on the backend with large tables and corresponding indexes ( 8*10^6 tuples ) For a good performance, actually the index should fit into the bufferpool Increased NETMNG_SELECT_TIMEOUT from 3000 to 500000 usec to avoid CPU usage of the thread pool threads. This increased the select count(*) performance of 8 mio tuples from 98sec to 14 sec.
cego 02.01.2007 1.0.3 Lock consolidation for locks in CegoBufferPool and CegoFileHandler Now all mutex are manged by the CegoLockHandler class. This fixes another locking problem with the locks in CegoBufferPool and CegoFileHandler
lfcxml 01.01.2007 1.0.2 Fixed a memory leak in Document::clear(). Root element was not deleted
cego 01.01.2007 1.0.3 Memory leak fixed located in xml library ( fixed with xml 1.0.2 ) Locking problem fixed in CegoBufferPool and CegoFileHandler Cleanup of CegoDefs.h
cego 31.12.2006 1.0.2 Introduced msg receive timeout in NetHandler class Proceed with module cleanup ( 42 / 75 treated ) Public alpha release of version 1.0.2
cego 30.12.2006 1.0.2 Cleanup on CegoGlobalTableManager with object protection Still a lot of todos for Version 2 Proceed with user guide
cego 29.12.2006 1.0.2 More work on object protection for create/drop operations Object protection now handled via GlobalSpace::useObject and GlobalSpace::unuseObject methods
cego 28.12.2006 1.0.2 Fixes on query aggregation functions done ( avg, min, max ) Object ( record ) locking introduced to protect table during index build Bug-Notice to the bug from 15.06.2006 : The issue has been fixes in the meantime. The problem was located in the nextRequest-method of the CegoXThreadPool classes. Code changed from P(); CegoNetHandler **pRequest = _requestQueue.First(); if ( pRequest ) { _requestQueue.Remove(*pRequest); V(); return *pRequest; } to P(); CegoNetHandler **pRequest = _requestQueue.First(); if ( pRequest ) { _requestQueue.Remove(*pRequest); CegoNetHandler *pN = *pRequest; V(); return pN; }
cego 27.12.2006 1.0.2 LogManager extension for handling object create/alter/drop cglog extension to trace create/alter/drop Changed lsn start values from 0 to 1 for better log handling
cego 26.12.2006 1.0.2 Proceed with user guide
Proceed with module cleanup ( 38 / 75 treated )
cego 25.12.2006 1.0.1 Proceed with user guide Proceed with module cleanup ( 27 / 75 treated ) Public alpha release of version 1.0.1
cego 24.12.2006 1.0.1 Cleanup on CegoOutput to prepare for datatype handling float, double and bigint type basically work now
lfcbase 23.12.2006 1.0.5 Some minor enhancements in File class as a merge result of the Tracx base classes
cego 21.12.2006 1.0.1 Started with web based user documentation
cego 20.12.2006 1.0.1 More work on CegoIndexManager::propagateDecrease which handles tree balancing after index deletion. This is the hardest part of the story. Since many cases have to be treat, it will take a while to make run this stable. Benefit: No reorganization of indexes is required after heavy insert/delete operations First tests for rebalancing after deletion are sucessful Proceed with module cleanup ( 20 / 75 treated )
cego 18.12.2006 1.0.1 Cleanup work on IndexManager. Balancing after index deletion is still not done. For this, the rotation operation methods for the AVL index trees have been isolated Now they can be used for balancing after deletion.
cego 17.12.2006 1.0.1 Cleanup work on stored procedures. Return value handling added to procedures and functions. Minor language extension for retrieving object information ( adding show user [view,index,procedure] ). Bug fixes regarding object dropping.
cego 15.12.2006 1.0.1 Multithreading tests started. Fixed a locking bug in CegoObjectManager::insertPageData After getNewFilePage, fileId and pageId have not been assigned to the new values, which lead to wrong arguments in lockDataPage call Fixed some (old) issues in the CegoLockHandler class ( from multi-process version )
cego 14.12.2006 1.0.1 Started with final code cleanup
cego 13.12.2006 1.0.1 Prepared SQL function structure in CegoSelect and CegoFacDesc Implementation of first string function LEFT The locking strategy in BufferPool::bufferfix and BufferPool::bufferUnfix seems to be to rough. A locking granularity on hashIds would enable parallel reads and wirtes on different datafiles ...
cego 11.12.2006 1.0.1 Little syntax extension for date value handling: date( < value > , < format > )
cego 10.12.2006 1.0.1 Performance optimization and bugfixing on subqueries A more intelligent strategy is used for query execution preparation ( references and join execution structures are build up now ONE time in the master query )
dragon 09.12.2006 1.2.5 Compiler Cleanup for Forte C++ ( Solaris )
lfcxml 09.12.2006 1.0.1 Adapted version for base 1.0.4 Compiler Cleanup for Forte C++ ( Solaris )
cego 09.12.2006 1.0.1 JDBC now works for Callable Statements ( Stored Procedures ) in a basic way Source cleanup has been done in accordance to Forte C++ ( Solaris ) Performance tests with insert and select operations habe been done. TableSchema : int, string(30) Insert performance via stored proc ( no index) : 100000 rows in 7 sec Insert performance via stored proc ( one index on integer ) : 100000 rows in 12 sec Create index : 100000 rows in 4 sec Select count(*) : 200000 rows in 0.3 sec Select count(*) : 1000000 rows in 1.5 sec Select count(*) with where condition : 1000000 rows in 3 sec
lfcbase 09.12.2006 1.0.4 Compiler cleanup for Forte C++
dragon 04.12.2006 1.2.4 Make dragon conform to base 1.0.4
lfcbase 04.12.2006 1.0.4 Cleanup of sample directory Changed class Exception from ListT to StackT msg handling ( this enables using Exception for ListT::operator []
lfcxml 02.12.2006 1.0.0 Prepared XML library for reading large file streams With the XMLSuite::setFile method, the XML stream is buffered read from a file
cego 02.12.2006 1.0.1 More workd on JDBC driver and extensions to cego server ( session handling )
cego 26.11.2006 1.0.1 Proceed with JDBC Driver, this is still much work ... fixed tableinfo statement and added method CegoObjectManager::getPageCount to retrieve page count information for table objects
cego 25.11.2006 1.0.1 Tested cego with high volume data ( 10 G ), engine works pretty stable Checking CegoFieldValue value ptr for zero in comparison to catch non-initialized variables Handling session abort in CegoDbThread, CegoAdminThread and CegoLogThread Started with JDBC Driver implementation, basic query works
cego 21.11.2006 1.0.1 Fixed some alignment problems in CegoTableObject ( occured with Solaris ) Added datetime data type
cego 20.11.2006 1.0.1 Fixed some memory leaks
Fixed some log handler problems
cego 19.11.2006 1.0.1 Cursor added to precedures Client XML protocol bugfixing Select Aggregation fixing
cego 18.11.2006 1.0.1 Procedures basically work ( cursor still missing ) Started with null value implementation
cego 13.11.2006 1.0.1 Cleanup of Cego.def and CegoAction Proceed with procedure implementation Introduction of bool datatype
cego 12.11.2006 1.0.1 Proceed with procedure implementation Procedures are parsed, stored and loaded now
dragon 06.11.2006 1.2.3 Check of recursive usage of useless productions added. ( prod -> prod IDENTIFIER was nor detected as useless, if prod was not used in other productions )
lfcbase 06.11.2006 1.0.4 Added BigDecimal class
lfcbase 06.11.2006 1.0.3 Added Datetime(int) constructor and asInt() method to class Datetime Added asBool to class Chain
lfcbase 06.11.2006 1.0.2 Changed SetT.First() and SetT.Next() methods to be const
cego 05.11.2006 1.0.1 Started with procedure implementation Following classes have been added : CegoProcedure CegoProcParam CegoProcCursor CegoProcBlock CegoProcStmt CegoProcIfStmt CegoProcCursorLoopStmt CegoProcAssignStmt CegoProcExpr CegoProcTerm CegoProcFactor CegoProcCond CegoProcPred
cego 04.11.2006 1.0.1 Views are basically work fine
cego 01.11.2006 1.0.1 CegoGlobalTableCursor basically adapted for view handling View are dynamically parsed and loaded if detected from the table cursor Still need some work to get this stuff run ...
cego 30.10.2006 1.0.1 Foreign keys basically work. Introduced CegoContentObject as an abstract container class for table and view objects. Changed the CegoSelect class to handle CegoContent objects ( requirement for view handling )
cego 29.10.2006 1.0.1 Foreign key implementation started. View management implementation started.
cego 23.10.2006 1.0.1 Select queries seem to run well again. The join optimizing logic was fixed but also an alignment bug in the CegoIndexCursor::getFieldList method.
lfcbase 23.10.2006 1.0.1 Introduced Bitmap class. Introduced version string variable vor release control.
cego 22.10.2006 1.0.1 In terms of view and procedure implementation, the CegoSelect class had to be redesigned. Now there is provided a nextTuple method for controlled retrievel of selected tuples. This is necessary to retrieve tuples in nested views, but also for db cursor implementation. Also the class looks more lean and clean now.
cego 21.10.2006 1.0.1 The change of CegoObjectEntry had some impact to using classes. Affected classes have been changed. Introduced object classes for views and procedures.
dragon 16.10.2006 1.2.2 Changed '$'-Token to 'ENDTOKEN'-Token for Compiler compatibility
cego 16.10.2006 1.0.1 Started with implementation of foreign keys. Basic structures are ready. Split of CegoObjectEntry in superclass CegoObject + derived classes CegoTableObject and CegoKeyObject This lead to a cleaner object design.
cego 15.10.2006 1.0.1 Nested Join basically works well ( allquantor results seem to be ok )
cego 14.10.2006 1.0.1 Further preparation work for nested select queries Cleanup of XML attribute definitions
cego 13.10.2006 1.0.1 Isolation of CegoQuery::select-methods to class CegoSelect
dragon 10.10.2006 1.2.1 Some small documentation fixes have been done
dragon 09.10.2006 1.2.0 New code runs. Java based parser basically tested.
cego 09.10.2006 1.0.1 Made CegoGlobalSpace class threadsafe. Changed CegoBlow Test-Program for direct attach to db.
dragon 07.10.2006 1.2.0 Implementation of Java code generation done. Still untested.
cego 06.10.2006 1.0.1 Queries work now with new tableset model. Some changes have been required in CegoFileHander::allocatePage() and CegoFileHandler::getHandle() to handle tableset > 1
cego 05.10.2006 1.0.1 CegoAdm : Fixed some appearance issues in the DataFile Monitor and BufferCache Monitor Cego : Added table startup feature for daemon mode. Made some basic function tests with db queries. cego cores with activated log and treating select queries. Fixed the problem for the activated log
cego 04.10.2006 1.0.1 Again back to CegoAdm. Start and stop of tableset via Admin GUI now basically works.
cego 03.10.2006 1.0.1 Introduction of cego to the public web page
cego 25.09.2006 1.0.1 Further work on GUI. Added action panel and separator design. Cleanup and better code design of several JPanels. Looks more beautiful now ...
cego 24.09.2006 1.0.1 GUI programming is tough. Spent a lot of time in CegoADM GUI design to find an appropriate appearance. Now all essential node and table set information are displayed pretty nice.
cego 22.09.2006 1.0.1 Further work on CegoAdm Java Frontend. Active nodes and tableset are displayed and managed in Jtree structures
cego 21.09.2006 1.0.1 Added create and drop tableset services. Introduced table set status values
cego 20.09.2006 1.0.1 Started with reprise of the CegoAdm stuff. Back to Java ...
cego 18.09.2006 1.0.1 Introduced recovery services to CegoAdmin
cego 17.09.2006 1.0.1 Added the file copy service to CegoAdmin
cego 16.09.2006 1.0.1 Better help output was designed ( cego -h ) CegoAdminHandler was extended to request db spec information. The CegoLogThread works in a basic form.
cego 09.09.2006 1.0.1 some work done on LogManager and friends. Introduced new classes for logfile shipping ( CegoLogThreadPool, CegoLogThread and CegoLogHandler )
cego 04.09.2006 1.0.1 more bugfixing and cleaning regarding the tabsetId extension
cego 03.09.2006 1.0.1 some bugfixing in CegoFileHandler and CegoTableManager ( caused by tableset extension )
cego 28.08.2006 1.0.1 another redesign of the thread structure. Now we have the following thread model: db thread pool admin thread pool mediator thread beat thread The CegoAdmin program was modified in a way, that it connects to the admin thread pool for basic admin actions.
cego 23.07.2006 1.0.1 transfer of admin data works. Data is transferd via xml to requestor
cego 09.07.2006 1.0.1 DB configuration now is described in a XML definition file Introduction of CegoGlobalSpace for meta information handling ( host, tableset and global objecct information ) Introduction of CegoAdmin as admin console client Introduction of CegNet::nextMessage for single threaded message handling Basic testing
cego 08.07.2006 1.0.1 Introduction of table set management. This results in a fundamental change of several classes. Current state of code is compile ready but still not tested.
cego 03.07.2006 1.0.1 Further work on session handling. Bug fixing on protocol errors
cego 02.07.2006 1.0.1 Renaming CegoXMLHandler to CegoSessionHandler. Completion of first draft xml protocol implementation. basic query works now ...
cego 27.06.2006 1.0.1 introduced CegoXMLHandler for complete XML protocol encapsulation
cego 26.06.2006 1.0.1 table sync works but code is still not very clean ( XML message handling encapsulation )
cego 24.06.2006 1.0.1 further work on table sync function
cego 22.06.2006 1.0.1 added pointer alignment to CegoTableManager::encodeFVL and CegoTableManager::decodeFVL ( bus error on Sparc)
cego 19.06.2006 1.0.1 introduced mediator, basic sync table function ( SYS_HOST, SYS_TABLEGROUP, SYS_GLOBALOBJECT)
cego 18.06.2006 1.0.1 added global getObject feature cleanup of CegoThread xml handling
cego 17.06.2006 1.0.1 more work on the global table handling, introduced SYS_GLOBALOBJECT and added node to node communication to CegoGlobalTableManager and CegoThread testing of the first distributed table creation and insert commands
cego 16.06.2006 1.0.1 The MT-problem also occurs on the PPC but not on FreeBSD. Added some client protocol enhancements for query and error handling Added tableGroupId attribute to CegoObjectEntry Introduced SYS_TABLEGROUP table in CegoSystemSpace Introduced SYS_HOST table in CegoSystemSpace added several access methods in CegoSystemSpace ( getHostId, addHostInfo, addTableGroup, getTableGroupId, getPrimaryHostId, getHostInfo )
cego 15.06.2006 1.0.1 made some heavy MT-Tests with multiple client against cego daemon. Fixed some synchronisation problems. There is still a memory access problem, if too many incoming requests are handled ( heavy memory requests occur ). Perhaps this is an Mac OS X pthread problem. I have to analyse this bug more detailed ( on Mac OSX/PPC or Solaris )
cego 12.06.2006 1.0.1 introduced client session protocol in CegoThread and CegoClient introduced CegoGlobalTableManager, CegoGlobalTableCursor and CegoQueryHelper for global table handling
cego 11.06.2006 1.0.1 changed lsn management to avoid access to SystemSpace in bufferFix ( now managed by CegoDBInfo ) some debug mode enhancements
cego 10.06.2006 1.0.1 Integration of native ObjectCursor into CegoTableCursor ( usage in CegoQuery methods ) This is a preparation for the global approach because of SPARC memory alignment requirements type change of short to int some cleanup of semantic actions for Condition handling bug fix in CegoObjectManager ( removed inheritance from CegoLockHandler )
cego 06.06.2006 1.0.1 better exception handling of CegoThread signal handling in CegoThreadPool
cego 05.06.2006 1.0.1 Code is running again with new CegoThreadPool and CegoNet classes
cego 29.05.2006 1.0 Transition of the most old dbeng PQL classes to CEGO Modification for thread save operation was made ( thread interface is CegoBufferPool )