Version 1.5.1 - Change of Compiler, Optimization, IColumnsRowset, etc.

We completed the revision of functions realized in version 1.5. Some petty errors were fixed and optimisation was carried out in version 1.5.1. At present the realisation of new interfaces is started. IColumnsRowset is already available.

About arrays

We would like to thank Dmitry Yemanov and Claudio Valderrama C. for the solution of problem with arrays. As it turned out FB returns the necessary information for saving arrays in database (names of table and column).

Change of compiler

At present we are turn to Free Borland C++ Compiler, therefore you can download one of two modifications of IBProvider:

• Compiled by BCB3 (library - cw3240mt.dll)
• Compiled by Free Borland C++ Compiler (cc3250mt.dll)

Errors

• Support of quoted names containing apostrophes e.g. "a'b". As it turned out this error is meeting frequently in existing access libraries.)
• Conversion DBTYPE_UI1 to character presentation.
• CanConvert informed about impossibility of conversion DBTYPE_BOOL to other types.

Optimization

• Management of the list of identifier of locked rows (HROW) is improved. Storing it in linear list used before led to speed decrease.
• Inner SQL syntax analyzer was extended for recognition of all basic categories, therefore IBProvider makes the query to server for getting RowAffected only for "INSERT ...", "UPDATE ...", "DELETE ...". For other categories -1 is returned always.
• The pool of shared objects was realized. It allows the decrease of the expenses for using objects of metadata publication. See below IColumnsRowset.

New Functionality

• Since ADO refuses flatly to use IOpenRowset to open the tables, the explicit support of opening ones was realized:
  
  ADODBCommand.CommandText="TABLE/VIEW" .
  
  At the expense of inner SQL syntax analysis the outgoes for the support are tiny. Probably we will have to realize the special support of query: "select * from TABLE/VIEW".
• The inner infrastructure of DB metadata publication implementation is began. As this metadata getting interfaces are used in ADO often enough then cache making of standart column descriptions and their declarations as rows IColumnsRowset created. At present IColumnsRowset implementation is completed:
  • Is supported by commands and resulting rowsets.
  • Recursion. Return rowsets support IColumnsRowset also. As structure and return data when recurse using of IColumnsRowset are not changable then they are suit things for repeatable use.
  • IColumnsRowset of commands and their resulting sets contain specified columns
    • DBCOLUMN_BASECATALOGNAME is NULL always
    • DBCOLUMN_BASECOLUMNNAME
    • DBCOLUMN_BASESCHEMANAME is NULL always
    • DBCOLUMN_BASETABLENAME
    • DBCOLUMN_KEYCOLUMN - NULL/true/false - Column entering into table primary key.
  • Query to system table to get primary key list is executed for table only. For views and other query categories the operation is not execute.
  • In auto-commit mode superfluous transaction starts only in case of using IColumnsRowset by command. IColumnsRowset of resulting set uses the same transaction during data selection is executed.
  As for full use of IColumnsRowset it is need to implement a little more let it consider as an assay.

All

Publish date: 2001-11-14. Copyright: IBProvider. This material may be reproduced on other web sites, without written permission but link to http://www.ibprovider.com required. Printable version: Version 1.5.1 - Change of Compiler, Optimization, IColumnsRowset, etc.

All IBProvider news:

2011-11-15 The new IBProvider 3.9.4 improves compatibility with .NET. Fixed known bugs. 2011-09-23 New IBProvider v3.9.1 become more faster. 2011-08-22 The new version of IBProvider v.3.9 is delivered with the warranty(!) of stable performance within systems operating around the clock. 2011-06-07 IBProvider v3.8.2. Are your data access components ready for Firebird 3? 2011-05-11 IBProvider v3.8. UDF in metadata schemas. Configuring of transaction isolation parameters. New "Free". 2011-04-03 IBProvider v3.7. Support for BOOLEAN [Firebird v3]. 2011-03-03 IBProvider v3.6. New interfaces for rowset and new metadata schema. 2011-02-14 IBProvider v3.5. Support for Firebird 2.5.1. Automatic generation of SQL queries has been improved. Support for parameters in SQL scripts. 2011-01-14 4 key distinctions of the new IBProvider v3.4 that make your applications faster 2010-12-18 In the new IBProvider version, we introduced support of the BASE64 charset of InterBase XE, improved algorithms, reduced requirements to memory and corrected errors 2010-11-16 Do you want to enable execution of SQL scripts in your programs and spend less time for exhausting coding? 2010-11-11 Do you want to receive the full-featured IBProvider 64/32? Participate in our contest! 2010-10-20 Do you use TIME and TIMESTAMP in your applications? The new IBProvider version will further simplify your work! 2010-09-16 The new IBProvider version has a new interface and can work correctly with case-dependent names of database objects via MS SQL. 2010-08-26 Download the final build of IBProvider Professional v3(!). 2010-07-08 New IBProvider Professional v3 RC5 that supports updatable rowsets is now available. 2010-06-11 Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. 2010-05-07 New IBProvider 3.0.0.9496 RC4 release appeared. Query parameters parsing and COM-locking was updated. 2010-04-19 Changes in SQL-parser. Support for SQLSTATE and NativeError. 2010-03-15 Three Reasons Why You Should Upgrade to the New IBProvider 2010-02-14 Be quick to get a free license for IBProvider Professional v.3.0.00.8628 2010-01-18 Today, on January 18, 2010, IBProvider celebrates its 10th anniversary. The grand banquet is preceded by the release of the latest IBProvider version with enhanced support of DDL and updatable rowsets. 2009-12-15 We have improved PROCEDURES scheme loaders to obtain the text of stored procedures in PROCEDURE_DEFINITION. 2009-11-16 Performance of the new IBProvider increased by 4.5 times 2009-10-07 IBProvider 3.0.0.7798. The work with large volumes of data was improved. 2009-08-13 New IBProvider 3.0.0.7575 with queries pool and enhanced working with Delphi. 2009-07-10 IBProvider now supports free ways of NULL-processing. 2009-07-04 New IBProvider version can emulate BOOLEAN and GUID types when working with Firebird and Interbase. 2009-06-11 New IBProvider version has the option of cancelling commands execution and supports the new type of Firebird 2.5 queries containing SQL_NULL. 2009-05-05 The option of working with TIME type via MS SQL Linked Server. 2009-04-17 16 versions of Firebird and Interbase are now available for recording on 64-bit platforms via MS SQL Linked Server. 2009-03-05 IBProvider v3 Release Candidate 4 with enhanced DDEX support and optimized working with nominated parameters. Metadata can now be accessed in user encoding. 2009-02-16 New IBProvider allows comprehensive work in Unicode applications, enhanced work with NONE encoding, and supports charset markers. 2009-01-12 The brand new mechanism has been developed in IBProvider v3 for working with Firebird and Interbase text data charsets. 2008-11-06 New IBProvider - support of 49 code pages, ability to work without provider registering, prevention of memory leaks in Firebird client. 2008-10-03 In the new edition of IBProvider Professional 7 codepages support was implemented, bugs were fixed, BLOB-fields access and memory management was improved 2008-08-25 The 6 world-wide Firebird Conference in Bergamo, Italy 2008-07-30 IBProvider updates are available. Operation with NUMERIC-types and connection pooling were improved. External and temporary tables support in metadata schemes was added. Disabled metadata cache mode performance was increased in 2.5 times. 2008-07-08 New IBProvider Release Candidate 3 is available. Support of the integrated Windows authentication (SSPI) for Firebird 2.1, Support of long names and BOOLEAN type in Interbase 7.x and Interbase 2007, etc. 2008-06-17 IBProvider releases have appeared. OCTETS character set support, data type converter release, 64 bits values in metadata schematics. 2008-05-12 IBProvider releases have appeared. New implementation of the data types converter. 2008-04-07 New IBProvider v3 for 64 bits operational systems. 2008-03-11 New build No 3965 of IBProvider v 3.0 RC2 has appeared. 2008-02-08 Visual Studio 2008 support was improved, work with DTC was corrected, known bugs were fixed and Firebird/Interbase compatibility was enhanced. 2007-12-26 We have changed the IBProvider license agreements and now give discounts. 2007-11-08 The second Russian Firebird and Interbase conference will take place in Moscow, November 23, 2007 2007-10-30 IBProvider Free Edition (3.0.0.3313 Release Candidate 2 [RC2]) has appeared. 2007-10-29 IBProvider v3 Release Candidate 2 (RC2) has appeared. 2007-10-18 New release of the IBProvider Professional Edition appears. We have improved Integration with Microsoft office and fixed known bugs. 2007-09-13 New providers versions in the Professional Edition now can be used with Microsoft SQL Server 2005 Business Intelligence Development Studio 2007-07-20 The latest editions of IBProvider Professional and IBProvider Free now support new features of Firebird 2.1 2007-05-25 Download engine now working. All customers will receive personal releases more quikly. 2007-04-27 The latest editions of IBProvider Professional and IBProvider Free are available for download. 2006-12-13 C++ client library for OLEDB providers now support the Unicode project types (which based on unicode strings). 2006-12-04 New releases appear: IBProvider Professional Edition - is a professional developer kit for Interbase and Firebird. IBProvider Free Edition - is an absolutely free of charge and most powerful version based on the commercial core of IBProvider v3. 2006-10-07 IBProvider 3.0.0.2385 [RC1] and IBProvider 2.5.0.2088 [Release] now avaliable. New properties aliases: Charset, PSWD. Metadata reading algorithm and SQL parser was optimized. Supporting arrays in ADO .Net. 2006-08-28 IBProvider 3.0.0.2065 [Beta]. IBProvider 2.4.7.2034 [Release]. MSSQL 2000/2005 integration improvement. 2006-08-13 IBProvider 3.0.0.1959 [Beta]. IBProvider 2.4.6.1989 [Release]. C++ library for OLEDB providers now support VC8 (VS2005) 2006-05-25 IBProvider 3.0.0.1324 [Beta]. IBProvider 2.4.5.1953 [Release]. Client Library for C++. 2006-05-05 IBProvider price will be changed after 23 may 2006. New demo versions are avalible 2006-03-30 IBProvider release v.2.4.4 (v.1.7.26) build 1885. IBProvider v.3 [build 1107 beta] 2006-02-27 IBProvider v.1/v.2 [build 1877 Release Candidate 1]. IBProvider v.3 [build 1062. beta] 2005-11-30 IBProvider 2.4.3.1859. Release. 2005-11-01 Fix of problem with arithmetic errors in .NET applications. 2005-09-28 IBProvider v3 [build 913] [beta version]. 2005-09-22 IBProvider v3 [build 890] [beta version]. IBProvider v2/v1 [build 1811]. 2005-09-01 The InterBase and Firebird Developer Magazine. 2005-07-28 IBProvider v3 [build 789] [beta version]. IBProvider v2/v1 [build 1802]. 2005-06-15 IBProvider v3 [build 779] [beta version]. IBProvider v2/v1 [build 1795]. 2005-04-12 IBProvider User Forum is Open 2005-03-22 IBProvider 2.4.2.1772. Release. 2005-02-28 IBProvider 3.0.0.639 beta. Change of the corporate license. 2005-02-11 IBProvider 3.0.0.573 beta. 2004-12-24 IBProvider 3.0.0.449 beta. 2004-11-12 IBProvider 2.4.1.1720/1.7.23.1720. Release. 2004-05-31 IBProvider 2.4.0.1607/1.7.22.1607. Release. 2004-05-14 Release Candidate 2.4.0.1588/1.7.22.1588 2004-04-30 Version 2.3.3.1523 beta 2004-03-29 Version 2.3.3.1416 beta 2003-12-17 Version 2.3.3.1300 2003-10-18 Version 2.3.2.1233 2003-08-22 Version 2.3.1.1184 2003-06-25 Version 2.3.0.1134 - extended support of MS AS, MS SQL 2003-04-23 Version 2.2.0.969 - Data Links dialog support, localization 2003-03-31 Version 2.1.2. 2003-03-26 Version 2.1.1. 2003-03-04 Version 2.1. The error processing mechanism is completely reconstructed. 2003-02-26 Discounts on IBProvider. 2003-02-18 Changes in License Terms 2003-01-23 Version 2.0.1.735. Bug fix, optimization, HTML help 2002-12-10 The second generation IBProvider 2002-11-21 Version 1.7.11.584 and 1.8.0.584 beta 2002-11-06 Version 1.7.10.542 and 1.8.0.542 beta 2002-10-20 Version 1.7.9.481 and 1.8.0.481 beta 2002-08-12 Version 1.7.6.350 and 1.8.0.350 beta 2002-07-30 Version 1.7.5.311 - Bugs fixing 2002-07-10 Version 1.7.4.289 2002-06-20 Version 1.7.3.269 2002-05-30 Version 1.7.2.255 2002-05-08 Version 1.7.1 2002-04-22 Version 1.7.0.227. Support of UNICODE. New prices. 2002-03-29 Version 1.6.3.213 2002-02-28 Version 1.6.2.201 2002-02-08 Version 1.6.2.199 2002-01-19 Version 1.6.1.185 2001-12-24 Free Version 1.5.2 2001-12-13 Version 1.6 2001-11-14 1.5.1 - Change of Compiler. Optimization. IColumnsRowset. etc. 2001-08-30 IN-OUT Parameters. Arrays. .... 2001-07-16 Error with test of connection in Data Links 2001-05-21 Support of stored procedure 2001-05-16 New samples on Delphi for MTS from Andrei Semak 2001-05-14 The final touches to RowSet 2001-04-30 Commercial release 2001-04-20 Support of DTC and Resource pooling 2001-04-04 Support for null-containing character in strings 2001-03-16 Implementaion of IOpenRowset::OpenRowset 2001-03-15 Support of DECIMAL and NUMERIC 2001-03-12 Errors correction... 2001-03-01 Fix bug in command prepare 2001-01-03 The main cardinal change is in accordance with implementation of operation auto-commit support. 2000-12-01 IBProvider and client library Reconstruction. 2000-09-15 New version of IBProvider for IB6.

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