BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  dbExpress - no Unicode support          BorlandTalk.com Forum Index -> Delphi Databases (dbExpress) View previous topic :: View next topic   Author Message Dmitry Arefiev [gs-soft.r Guest Posted: Tue Apr 13, 2004 6:20 pm    Post subject: dbExpress - no Unicode support Hello All ! We are now testing dbExpress with DB2. And our last results, as a lot of previous, allows me to state - dbExpress does not support Unicode. dbExpress specification has almost (how to say that ...) nothing about Unicode. 1) Type fldZSTRING has fldstUNICODE and fldstFIXED subtypes. Either either ... So, either Unicode, either Fixed. What about Fixed Unicode ? Kind of WCHAR ? 2) Much more complex is with text blob fields. Type is fldBLOB, but then few subtypes: - fldstMEMO - fldstHMEMO - fldstGRAPHIC (DB2 graphis field or field containing picture ?) each of them may contain Unicode data. 3) Unicode is native to .Net platform. So **how** dbExpress may be used there ? Drivers was rewrote ? I think - no ... Also, how chiniese or japaniese Delphi version may be used by native speekers ?? Anybody has some idea ? So, IMHO, FIXED and UNICODE should be an attributes, and implemented as other ISQLCursor "attributes" using methods, like a: - isAutoIncrement - isBlobSizeExact. So: - isFixed - isUnicode All what we see in DBXpress unit is a "copy and past" from BDE unit. But last one is depricated. So, why to copy "depricated" things ?! Which anyway will not work right in .Net ... Regards, Dmitry -- Dmitry Arefiev, gs-soft Company, community.gs-soft.com Personal - www.da-soft.com SAPx - Delphi to SAP R/3 direct access Saphir - SAP R/3 metadata on your fingertips MetaBase - ERWIN model in Delphi applications NCOCI8 - Freeware Delphi to ORACLE direct access Back to top Dmitry Arefiev [gs-soft.r Guest Posted: Tue Apr 13, 2004 6:56 pm    Post subject: Re: dbExpress - no Unicode support As i see - specification remains unchanged. If so, then implementation either follows interface, either will break existing code. Is not ? -- Dmitry Arefiev, gs-soft Company, community.gs-soft.com Personal - www.da-soft.com SAPx - Delphi to SAP R/3 direct access Saphir - SAP R/3 metadata on your fingertips MetaBase - ERWIN model in Delphi applications NCOCI8 - Freeware Delphi to ORACLE direct access Craig Stuntz [TeamB] wrote: Quote: Dmitry Arefiev [gs-soft.ru] wrote: 3) Unicode is native to .Net platform. So how dbExpress may be used there ? Drivers was rewrote ? I think - no ... dbExpress was certainly updated for D8. I don't know if Unicode issues were addressed or not, but I do know that the drivers changed. -Craig Back to top Craig Stuntz [TeamB] Guest Posted: Tue Apr 13, 2004 7:49 pm    Post subject: Re: dbExpress - no Unicode support Dmitry Arefiev [gs-soft.ru] wrote: Quote: 3) Unicode is native to .Net platform. So how dbExpress may be used there ? Drivers was rewrote ? I think - no ... dbExpress was certainly updated for D8. I don't know if Unicode issues were addressed or not, but I do know that the drivers changed. -Craig -- Craig Stuntz [TeamB] · Vertex Systems Corp. · Columbus, OH Delphi/InterBase Weblog : http://delphi.weblogs.com Please read and follow Borland's rules for the user of their news server: http://info.borland.com/newsgroups/guide.html Back to top Ramesh Theivendran(Borlan Guest Posted: Wed Apr 28, 2004 8:47 pm    Post subject: Re: dbExpress - no Unicode support There was no work done for Unicode enablement and the issue that Dmitry mentions exists in the product. T.Ramesh. "Craig Stuntz [TeamB]" <cstuntz (AT) nospam (DOT) please [a.k.a. vertexsoftware.com]> wrote in message news:407c3650$1 (AT) newsgroups (DOT) borland.com... Quote: Dmitry Arefiev [gs-soft.ru] wrote: 3) Unicode is native to .Net platform. So how dbExpress may be used there ? Drivers was rewrote ? I think - no ... dbExpress was certainly updated for D8. I don't know if Unicode issues were addressed or not, but I do know that the drivers changed. -Craig -- Craig Stuntz [TeamB] · Vertex Systems Corp. · Columbus, OH Delphi/InterBase Weblog : http://delphi.weblogs.com Please read and follow Borland's rules for the user of their news server: http://info.borland.com/newsgroups/guide.html Back to top Thomas Miller Guest Posted: Wed Apr 28, 2004 9:39 pm    Post subject: Re: dbExpress - no Unicode support Is this something we can hope for in D9? Just so others understand the scope, the whole VCL will have to be updated to use WideString vs String. I don't know all the issues, but I guess it is more then just a search and replace :-; Ramesh Theivendran(Borland) wrote: Quote: There was no work done for Unicode enablement and the issue that Dmitry mentions exists in the product. T.Ramesh. -- Thomas Miller Delphi Client/Server Certified Developer BSS Accounting & Distribution Software BSS Enterprise Accounting FrameWork http://www.bss-software.com http://sourceforge.net/projects/dbexpressplus Back to top Craig Stuntz [TeamB] Guest Posted: Thu Apr 29, 2004 12:28 pm    Post subject: Re: dbExpress - no Unicode support Thomas Miller wrote: Quote: Is this something we can hope for in D9? Just so others understand the scope, the whole VCL will have to be updated to use WideString vs String. No. Unicode support can be added/enhanced in dbExpress without making the data-aware controls Unicode-enabled. Many people use dbExpress without ever touching data-aware controls (e.g., in web apps). Furthermore, there are alternative data controls which do support Unicode. So it is not necessary to change the VCL (for Win32 -- the VCL for .NET is already Unicode) to get the features Dmitry wants. Quote: I don't know all the issues, but I guess it is more then just a search and replace :-; Among other things, it would probably require dropping support for Win98 and would break existing code which depends on byte indexing of strings. -Craig -- Craig Stuntz [TeamB] . Vertex Systems Corp. . Columbus, OH Delphi/InterBase Weblog : http://delphi.weblogs.com Please read and follow Borland's rules for the user of their news server: http://info.borland.com/newsgroups/guide.html Back to top Dmitry Arefiev [gs-soft.r Guest Posted: Thu Apr 29, 2004 1:16 pm    Post subject: Re: dbExpress - no Unicode support Hello ! Quote: Unicode. So it is not necessary to change the VCL (for Win32 -- the VCL for .NET is already Unicode) to get the features Dmitry wants. Not a "Dmitry wants", but "corporate developers needs" <g> Quote: Among other things, it would probably require dropping support for Win98 and would break existing code which depends on byte indexing of strings. As always, it is not problem to add: - connection option - "enable unicode support". It will be disabled by default. So, no problems with compatibility. - new data types ftWideFixedString, ftWideMemo, etc. So, unicode enabled application will be able to use unicode in full scale. Of course, remains interesting questions with >= 2 byte/char Unicode. But it main remain ftBlob. Regards, Dmitry -- Dmitry L. Arefiev, gs-soft Company, http://www.gs-soft.com Personal - http://www.da-soft.com SAPx - Delphi to SAP R/3 direct access Saphir - SAP R/3 metadata on your fingertips MetaBase - ERWIN model in Delphi applications NCOCI8 - Freeware Delphi to ORACLE direct access Back to top Craig Stuntz [TeamB] Guest Posted: Thu Apr 29, 2004 1:17 pm    Post subject: Re: dbExpress - no Unicode support Dmitry Arefiev [gs-soft.ru] wrote: Quote: Among other things, it would probably require dropping support for Win98 and would break existing code which depends on byte indexing of strings. As always, it is not problem to add: - connection option - "enable unicode support". It will be disabled by default. So, no problems with compatibility. No, I meant for the VCL, not for dbExpress. I don't see a big problem adding the features your corporation wants to dbExpress. -Craig -- Craig Stuntz [TeamB] . Vertex Systems Corp. . 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