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ibx/trunk/fbintf/client/FBAttachment.pas (file contents), Revision 350 by tony, Wed Oct 20 14:58:56 2021 UTC vs.
ibx/branches/udr/client/FBAttachment.pas (file contents), Revision 379 by tony, Mon Jan 10 10:08:03 2022 UTC

#	Line 16 | Line 16
16		*
17		*  The Initial Developer of the Original Code is Tony Whyman.
18		*
19	<	*  The Original Code is (C) 2016 Tony Whyman, MWA Software
19	>	*  The Original Code is (C) 2016-2021 Tony Whyman, MWA Software
20		*  (http://www.mwasoftware.co.uk).
21		*
22		*  All Rights Reserved.
#	Line 39 | Line 39 | interface
39
40		uses
41		Classes, SysUtils, {$IFDEF WINDOWS} windows, {$ENDIF} IB,  FBParamBlock,
42	<	FBActivityMonitor, FBClientAPI;
42	>	FBActivityMonitor, FBClientAPI, IBUtils;
43
44		const
45		DefaultMaxInlineBlobLimit = 8192;
#	Line 53 | Line 53 | type
53		AllowReverseLookup: boolean; {used to ensure that lookup of CP_UTF* does not return UNICODE_FSS}
54		end;
55
56	+	{ Database Journalling.
57	+
58	+	This class is intended to support a client side journal of all database
59	+	updates, inserts and deletes made by the client during a session. It also records
60	+	the transaction each update was made under.
61	+
62	+	The database schema is required to include a control table "IBX$JOURNALS" and
63	+	an SQL Sequence IBX$SESSIONS. These are created by the class when the
64	+	database is opened, if they are not already present. However, it is recommended
65	+	that they are created as an orginal part of the database schema in order to
66	+	unnecessarily avoid each user being given sufficient priviledge to create tables
67	+	and Sequences.
68	+
69	+	Syntax:
70	+
71	+	Transaction Start:
72	+	*S:<date/time>,<attachmentid>,<session id>,<transaction no.>,<string length>:<transaction Name>,<string length>:<TPB>,<default Completion>
73	+
74	+	Transaction Commit:
75	+	*C:<date/time>,<attachmentid>,<session id>,<transaction no.>
76	+
77	+	Transaction Commit retaining :
78	+	*c:<date/time>,<attachmentid>,<session id>,<transaction no.><old transaction no.>
79	+
80	+	Transaction Rollback:
81	+	*R:<date/time>,<attachmentid>,<session id>,<transaction no.>
82	+
83	+	Transaction Rollback retaining:
84	+	*r:<date/time>,<attachmentid>,<session id>,<transaction no.><old transaction no.>
85	+
86	+	Update/Insert/Delete
87	+	*Q:<date/time>,<attachmentid>,<session id>,<transaction no.>,<length of query text in bytes>:<query text>
88	+
89	+	}
90	+
91	+	{ TFBJournaling }
92	+
93	+	TFBJournaling = class(TActivityHandler, IJournallingHook)
94	+	private
95	+	{Logfile}
96	+	const sQueryJournal          = '*Q:''%s'',%d,%d,%d,%d:%s' + LineEnding;
97	+	const sTransStartJnl         = '*S:''%s'',%d,%d,%d,%d:%s,%d:%s,%d' + LineEnding;
98	+	const sTransCommitJnl        = '*C:''%s'',%d,%d,%d' + LineEnding;
99	+	const sTransCommitRetJnl     = '*c:''%s'',%d,%d,%d,%d' + LineEnding;
100	+	const sTransRollBackJnl      = '*R:''%s'',%d,%d,%d' + LineEnding;
101	+	const sTransRollBackRetJnl   = '*r:''%s'',%d,%d,%d,%d' + LineEnding;
102	+	private
103	+	FOptions: TJournalOptions;
104	+	FJournalFilePath: string;
105	+	FJournalFileStream: TStream;
106	+	FSessionID: integer;
107	+	FDoNotJournal: boolean;
108	+	function GetDateTimeFmt: AnsiString;
109	+	protected
110	+	procedure EndSession(RetainJournal: boolean);
111	+	function GetAttachment: IAttachment; virtual; abstract;
112	+	public
113	+	{IAttachment}
114	+	procedure Disconnect(Force: boolean=false); virtual;
115	+	public
116	+	{IJournallingHook}
117	+	procedure TransactionStart(Tr: ITransaction);
118	+	function TransactionEnd( TransactionID: integer; Action: TTransactionAction): boolean;
119	+	procedure TransactionRetained(Tr: ITransaction; OldTransactionID: integer;
120	+	Action: TTransactionAction);
121	+	procedure ExecQuery(Stmt: IStatement);
122	+	public
123	+	{Client side Journaling}
124	+	function JournalingActive: boolean;
125	+	function GetJournalOptions: TJournalOptions;
126	+	function StartJournaling(aJournalLogFile: AnsiString): integer; overload;
127	+	function StartJournaling(aJournalLogFile: AnsiString; Options: TJournalOptions): integer; overload;
128	+	function StartJournaling(S: TStream; Options: TJournalOptions): integer; overload;
129	+	procedure StopJournaling(RetainJournal: boolean);
130	+	end;
131	+
132		{ TFBAttachment }
133
134	<	TFBAttachment = class(TActivityHandler)
134	>	TFBAttachment = class(TFBJournaling)
135		private
136		FDPB: IDPB;
137		FFirebirdAPI: IFirebirdAPI;
#	Line 64 | Line 140 | type
140		FUserCharSetMap: array of TCharSetMap;
141		FSecDatabase: AnsiString;
142		FInlineBlobLimit: integer;
143	<	protected
68	<	FDatabaseName: AnsiString;
69	<	FRaiseExceptionOnConnectError: boolean;
143	>	FAttachmentID: integer;
144		FSQLDialect: integer;
145		FHasDefaultCharSet: boolean;
146		FCharSetID: integer;
147		FCodePage: TSystemCodePage;
148		FRemoteProtocol: AnsiString;
149		FAuthMethod: AnsiString;
150	+	FHasConnectionInfo: boolean;
151	+	procedure NeedDBInfo;
152	+	procedure NeedConnectionInfo;
153	+	protected
154	+	FDatabaseName: AnsiString;
155	+	FRaiseExceptionOnConnectError: boolean;
156		constructor Create(api: TFBClientAPI; DatabaseName: AnsiString; DPB: IDPB;
157		RaiseExceptionOnConnectError: boolean);
158		procedure CheckHandle; virtual; abstract;
159	+	procedure ClearCachedInfo;
160		function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
80	–	procedure GetODSAndConnectionInfo;
161		function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; virtual; abstract;
162		function IsConnected: boolean; virtual; abstract;
163		procedure EndAllTransactions;
164		procedure DPBFromCreateSQL(CreateSQL: AnsiString);
165		procedure SetParameters(SQLParams: ISQLParams; params: array of const);
166	+	procedure SetSQLDialect(aValue: integer);
167		procedure UseServerICUChanged; virtual;
168		public
169		destructor Destroy; override;
170	+	procedure Disconnect(Force: boolean); override;
171		function getFirebirdAPI: IFirebirdAPI;
172		function getDPB: IDPB;
173		function AllocateBPB: IBPB;
174		function AllocateDIRB: IDIRB;
175	<	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
176	<	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
177	<	procedure Disconnect(Force: boolean=false); virtual; abstract;
175	>	function StartTransaction(TPB: array of byte;
176	>	DefaultCompletion: TTransactionCompletion;
177	>	aName: AnsiString=''): ITransaction; overload; virtual; abstract;
178	>	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion;
179	>	aName: AnsiString=''): ITransaction; overload; virtual; abstract;
180		procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
181		procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
182		procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
#	Line 140 | Line 224 | type
224		function GetEventHandler(Event: AnsiString): IEvents; overload;
225
226		function GetSQLDialect: integer;
227	+	function GetAttachmentID: integer;
228		function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
229		function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
230		function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
#	Line 150 | Line 235 | type
235		function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; virtual; abstract;
236		function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray; overload;
237		function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; virtual; abstract;
238	<	property SQLDialect: integer read FSQLDialect;
238	>	property SQLDialect: integer read GetSQLDialect;
239		property DPB: IDPB read FDPB;
240		public
241		function GetDBInformation(Requests: array of byte): IDBInformation; overload;
#	Line 162 | Line 247 | type
247		function GetSecurityDatabase: AnsiString;
248		function GetODSMajorVersion: integer;
249		function GetODSMinorVersion: integer;
250	+	function GetCharSetID: integer;
251		function HasDecFloatSupport: boolean; virtual;
252		function GetInlineBlobLimit: integer;
253		procedure SetInlineBlobLimit(limit: integer);
254		function HasBatchMode: boolean; virtual;
255	+	function HasTable(aTableName: AnsiString): boolean;
256	+	function HasFunction(aFunctionName: AnsiString): boolean;
257	+	function HasProcedure(aProcName: AnsiString): boolean;
258
259		public
260		{Character Sets}
#	Line 180 | Line 269 | type
269		AllowReverseLookup:boolean; out CharSetID: integer);
270		function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; virtual; abstract;
271		function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; virtual; abstract;
272	<	property CharSetID: integer read FCharSetID;
272	>	property CharSetID: integer read GetCharSetID;
273		property CodePage: TSystemCodePage read FCodePage;
274
275		public
#	Line 214 | Line 303 | type
303
304		implementation
305
306	<	uses FBMessages, IBUtils, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
306	>	uses FBMessages, IBErrorCodes, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
307	>
308	>	const
309	>	{Journaling}
310	>	sJournalTableName = 'IBX$JOURNALS';
311	>	sSequenceName = 'IBX$SESSIONS';
312	>
313	>	sqlCreateJournalTable =
314	>	'Create Table ' + sJournalTableName + '(' +
315	>	'  IBX$SessionID Integer not null, '+
316	>	'  IBX$TransactionID Integer not null, '+
317	>	'  IBX$OldTransactionID Integer, '+
318	>	'  IBX$USER VarChar(32) Default CURRENT_USER, '+
319	>	'  IBX$CREATED TIMESTAMP Default CURRENT_TIMESTAMP, '+
320	>	'  Primary Key(IBX$SessionID,IBX$TransactionID)' +
321	>	')';
322	>
323	>	sqlCreateSequence = 'CREATE SEQUENCE ' + sSequenceName;
324	>
325	>	sqlGetNextSessionID = 'Select Gen_ID(' + sSequenceName + ',1) as SessionID From RDB$DATABASE';
326	>
327	>	sqlRecordJournalEntry = 'Insert into ' + sJournalTableName + '(IBX$SessionID,IBX$TransactionID,IBX$OldTransactionID) '+
328	>	'Values(?,?,?)';
329	>
330	>	sqlCleanUpSession = 'Delete From ' + sJournalTableName + ' Where IBX$SessionID = ?';
331
332		const
333		CharSetMap: array [0..69] of TCharsetMap = (
#	Line 391 | Line 504 | const
504		'decfloat_traps'
505		);
506
507	+	type
508	+
509	+	{ TQueryProcessor }
510	+
511	+	TQueryProcessor=class(TSQLTokeniser)
512	+	private
513	+	FInString: AnsiString;
514	+	FIndex: integer;
515	+	FStmt: IStatement;
516	+	function DoExecute: AnsiString;
517	+	function GetParamValue(ParamIndex: integer): AnsiString;
518	+	protected
519	+	function GetChar: AnsiChar; override;
520	+	public
521	+	class function Execute(Stmt: IStatement): AnsiString;
522	+	end;
523	+
524	+	{ TQueryProcessor }
525	+
526	+	function TQueryProcessor.DoExecute: AnsiString;
527	+	var token: TSQLTokens;
528	+	ParamIndex: integer;
529	+	begin
530	+	Result := '';
531	+	ParamIndex := 0;
532	+
533	+	while not EOF do
534	+	begin
535	+	token := GetNextToken;
536	+	case token of
537	+	sqltPlaceHolder:
538	+	begin
539	+	Result := Result + GetParamValue(ParamIndex);
540	+	Inc(ParamIndex);
541	+	end;
542	+	else
543	+	Result := Result + TokenText;
544	+	end;
545	+	end;
546	+	end;
547	+
548	+	function TQueryProcessor.GetParamValue(ParamIndex: integer): AnsiString;
549	+	begin
550	+	with FStmt.SQLParams[ParamIndex] do
551	+	begin
552	+	if IsNull then
553	+	Result := 'NULL'
554	+	else
555	+	case GetSQLType of
556	+	SQL_BLOB:
557	+	if getSubType = 1 then {string}
558	+	Result := '''' + SQLSafeString(GetAsString) + ''''
559	+	else
560	+	Result := TSQLXMLReader.FormatBlob(GetAsString,getSubType);
561	+
562	+	SQL_ARRAY:
563	+	Result := TSQLXMLReader.FormatArray(getAsArray);
564	+
565	+	SQL_VARYING,
566	+	SQL_TEXT,
567	+	SQL_TIMESTAMP,
568	+	SQL_TYPE_DATE,
569	+	SQL_TYPE_TIME,
570	+	SQL_TIMESTAMP_TZ_EX,
571	+	SQL_TIME_TZ_EX,
572	+	SQL_TIMESTAMP_TZ,
573	+	SQL_TIME_TZ:
574	+	Result := '''' + SQLSafeString(GetAsString) + '''';
575	+	else
576	+	Result := GetAsString;
577	+	end;
578	+	end;
579	+	end;
580	+
581	+	function TQueryProcessor.GetChar: AnsiChar;
582	+	begin
583	+	if FIndex <= Length(FInString) then
584	+	begin
585	+	Result := FInString[FIndex];
586	+	Inc(FIndex);
587	+	end
588	+	else
589	+	Result := #0;
590	+	end;
591	+
592	+	class function TQueryProcessor.Execute(Stmt: IStatement): AnsiString;
593	+	begin
594	+	if not Stmt.IsPrepared then
595	+	IBError(ibxeSQLClosed,[]);
596	+	with self.Create do
597	+	try
598	+	FStmt := Stmt;
599	+	FInString := Stmt.GetProcessedSQLText;
600	+	FIndex := 1;
601	+	Result := Trim(DoExecute);
602	+	finally
603	+	Free;
604	+	end;
605	+	end;
606	+
607	+	{ TFBJournaling }
608	+
609	+	function TFBJournaling.GetDateTimeFmt: AnsiString;
610	+	begin
611	+	{$IF declared(DefaultFormatSettings)}
612	+	with DefaultFormatSettings do
613	+	{$ELSE}
614	+	{$IF declared(FormatSettings)}
615	+	with FormatSettings do
616	+	{$IFEND}
617	+	{$IFEND}
618	+	Result := ShortDateFormat + ' ' + LongTimeFormat + '.zzzz'
619	+	end;
620	+
621	+	procedure TFBJournaling.EndSession(RetainJournal: boolean);
622	+	begin
623	+	if JournalingActive and (FJournalFilePath <> '') then
624	+	begin
625	+	FreeAndNil(FJournalFileStream);
626	+	if not (joNoServerTable in FOptions) and not RetainJournal then
627	+	try
628	+	GetAttachment.ExecuteSQL([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],
629	+	sqlCleanUpSession,[FSessionID]);
630	+	sysutils.DeleteFile(FJournalFilePath);
631	+	except On E: EIBInterBaseError do
632	+	if E.IBErrorCode <> isc_lost_db_connection then
633	+	raise;
634	+	{ignore - do not delete journal if database gone away}
635	+	end;
636	+	FSessionID := -1;
637	+	end;
638	+	end;
639	+
640	+	procedure TFBJournaling.Disconnect(Force: boolean);
641	+	begin
642	+	if JournalingActive then
643	+	EndSession(Force);
644	+	end;
645	+
646	+	procedure TFBJournaling.TransactionStart(Tr: ITransaction);
647	+	var LogEntry: AnsiString;
648	+	TPBText: AnsiString;
649	+	begin
650	+	FDoNotJournal := true;
651	+	if not (joNoServerTable in FOptions) then
652	+	try
653	+	GetAttachment.ExecuteSQL(Tr,sqlRecordJournalEntry,[FSessionID,Tr.GetTransactionID,NULL]);
654	+	finally
655	+	FDoNotJournal := false;
656	+	end;
657	+	TPBText := Tr.getTPB.AsText;
658	+	LogEntry := Format(sTransStartJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
659	+	GetAttachment.GetAttachmentID,
660	+	FSessionID,
661	+	Tr.GetTransactionID,
662	+	Length(Tr.TransactionName),
663	+	Tr.TransactionName,
664	+	Length(TPBText),TPBText,
665	+	ord(tr.GetDefaultCompletion)]);
666	+	if assigned(FJournalFileStream) then
667	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
668	+	end;
669	+
670	+	function TFBJournaling.TransactionEnd(TransactionID: integer;
671	+	Action: TTransactionAction): boolean;
672	+
673	+	var LogEntry: AnsiString;
674	+	begin
675	+	Result := false;
676	+	case Action of
677	+	TARollback:
678	+	begin
679	+	LogEntry := Format(sTransRollbackJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
680	+	GetAttachment.GetAttachmentID,
681	+	FSessionID,TransactionID]);
682	+	Result := true;
683	+	end;
684	+	TACommit:
685	+	begin
686	+	LogEntry := Format(sTransCommitJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
687	+	GetAttachment.GetAttachmentID,
688	+	FSessionID,TransactionID]);
689	+	Result := true;
690	+	end;
691	+	end;
692	+	if assigned(FJournalFileStream) then
693	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
694	+	end;
695	+
696	+	procedure TFBJournaling.TransactionRetained(Tr: ITransaction;
697	+	OldTransactionID: integer; Action: TTransactionAction);
698	+	var LogEntry: AnsiString;
699	+	begin
700	+	case Action of
701	+	TACommitRetaining:
702	+	LogEntry := Format(sTransCommitRetJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
703	+	GetAttachment.GetAttachmentID,
704	+	FSessionID,Tr.GetTransactionID,OldTransactionID]);
705	+	TARollbackRetaining:
706	+	LogEntry := Format(sTransRollbackRetJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
707	+	GetAttachment.GetAttachmentID,
708	+	FSessionID,Tr.GetTransactionID,OldTransactionID]);
709	+	end;
710	+	if assigned(FJournalFileStream) then
711	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
712	+
713	+	FDoNotJournal := true;
714	+	if not (joNoServerTable in FOptions) then
715	+	try
716	+	GetAttachment.ExecuteSQL(Tr,sqlRecordJournalEntry,[FSessionID,Tr.GetTransactionID,OldTransactionID]);
717	+	finally
718	+	FDoNotJournal := false;
719	+	end;
720	+	end;
721	+
722	+	procedure TFBJournaling.ExecQuery(Stmt: IStatement);
723	+	var SQL: AnsiString;
724	+	LogEntry: AnsiString;
725	+	begin
726	+	SQL := TQueryProcessor.Execute(Stmt);
727	+	LogEntry := Format(sQueryJournal,[FBFormatDateTime(GetDateTimeFmt,Now),
728	+	GetAttachment.GetAttachmentID,
729	+	FSessionID,
730	+	Stmt.GetTransaction.GetTransactionID,
731	+	Length(SQL),SQL]);
732	+	if assigned(FJournalFileStream) then
733	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
734	+	end;
735	+
736	+	function TFBJournaling.JournalingActive: boolean;
737	+	begin
738	+	Result := (FJournalFileStream <> nil) and not FDoNotJournal;
739	+	end;
740	+
741	+	function TFBJournaling.GetJournalOptions: TJournalOptions;
742	+	begin
743	+	Result := FOptions;
744	+	end;
745	+
746	+	function TFBJournaling.StartJournaling(aJournalLogFile: AnsiString): integer;
747	+	begin
748	+	Result := StartJournaling(aJournalLogFile,[joReadWriteTransactions,joModifyQueries]);
749	+	end;
750	+
751	+	function TFBJournaling.StartJournaling(aJournalLogFile: AnsiString;
752	+	Options: TJournalOptions): integer;
753	+	begin
754	+	try
755	+	StartJournaling(TFileStream.Create(aJournalLogFile,fmCreate),Options);
756	+	finally
757	+	FJournalFilePath := aJournalLogFile;
758	+	end;
759	+	end;
760	+
761	+	function TFBJournaling.StartJournaling(S: TStream; Options: TJournalOptions
762	+	): integer;
763	+	begin
764	+	FOptions := Options;
765	+	if not (joNoServerTable in FOptions) then
766	+	with GetAttachment do
767	+	begin
768	+	if  not HasTable(sJournalTableName) then
769	+	begin
770	+	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateJournalTable);
771	+	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateSequence);
772	+	end;
773	+	FSessionID := OpenCursorAtStart(sqlGetNextSessionID)[0].AsInteger;
774	+	end;
775	+	FJournalFileStream := S;
776	+	Result := FSessionID;
777	+	end;
778
779	+	procedure TFBJournaling.StopJournaling(RetainJournal: boolean);
780	+	begin
781	+	EndSession(RetainJournal);
782	+	end;
783
784		{ TFBAttachment }
785
786	<	procedure TFBAttachment.GetODSAndConnectionInfo;
787	<	var DBInfo: IDBInformation;
400	<	i: integer;
401	<	Stmt: IStatement;
786	>	procedure TFBAttachment.NeedConnectionInfo;
787	>	var Stmt: IStatement;
788		ResultSet: IResultSet;
789		Param: IDPBItem;
790		begin
791	<	if not IsConnected then Exit;
792	<	DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
407	<	isc_info_db_SQL_Dialect]);
408	<	for i := 0 to DBInfo.GetCount - 1 do
409	<	with DBInfo[i] do
410	<	case getItemType of
411	<	isc_info_ods_minor_version:
412	<	FODSMinorVersion := getAsInteger;
413	<	isc_info_ods_version:
414	<	FODSMajorVersion := getAsInteger;
415	<	isc_info_db_SQL_Dialect:
416	<	FSQLDialect := getAsInteger;
417	<	end;
418	<
791	>	if not IsConnected or FHasConnectionInfo then Exit;
792	>	NeedDBInfo;
793		FCharSetID := 0;
794		FRemoteProtocol := '';
795		FAuthMethod := 'Legacy_Auth';
#	Line 461 | Line 835 | begin
835		end;
836		end;
837		FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
838	+	FHasConnectionInfo := true;
839	+	end;
840	+
841	+	procedure TFBAttachment.NeedDBInfo;
842	+	var DBInfo: IDBInformation;
843	+	i: integer;
844	+	begin
845	+	if not IsConnected or (FAttachmentID > 0) then Exit;
846	+	DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
847	+	isc_info_db_SQL_Dialect, isc_info_attachment_id]);
848	+	for i := 0 to DBInfo.GetCount - 1 do
849	+	with DBInfo[i] do
850	+	case getItemType of
851	+	isc_info_ods_minor_version:
852	+	FODSMinorVersion := getAsInteger;
853	+	isc_info_ods_version:
854	+	FODSMajorVersion := getAsInteger;
855	+	isc_info_db_SQL_Dialect:
856	+	FSQLDialect := getAsInteger;
857	+	isc_info_attachment_id:
858	+	FAttachmentID := getAsInteger;
859	+	end;
860		end;
861
862		constructor TFBAttachment.Create(api: TFBClientAPI; DatabaseName: AnsiString;
#	Line 470 | Line 866 | begin
866		FFirebirdAPI := api.GetAPI; {Keep reference to interface}
867		FSQLDialect := 3;
868		FDatabaseName := DatabaseName;
473	–	FDPB := DPB;
869		SetLength(FUserCharSetMap,0);
870	+	ClearCachedInfo;
871	+	FInlineBlobLimit := DefaultMaxInlineBlobLimit;
872	+	FDPB := DPB;
873		FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
874	+	end;
875	+
876	+	procedure TFBAttachment.ClearCachedInfo;
877	+	begin
878	+	FHasDefaultCharSet := false;
879	+	FAttachmentID := 0;
880		FODSMajorVersion := 0;
881		FODSMinorVersion := 0;
882	<	FInlineBlobLimit := DefaultMaxInlineBlobLimit;
882	>	FCodePage := CP_NONE;
883	>	FCharSetID := 0;
884	>	FRemoteProtocol := '';
885	>	FAuthMethod := '';
886	>	FSecDatabase := '';
887	>	FHasConnectionInfo := false;
888		end;
889
890		function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString;  aDPB: IDPB): AnsiString;
#	Line 609 | Line 1018 | begin
1018		end;
1019		end;
1020
1021	+	procedure TFBAttachment.SetSQLDialect(aValue: integer);
1022	+	begin
1023	+	FSQLDialect := aValue;
1024	+	end;
1025	+
1026		procedure TFBAttachment.UseServerICUChanged;
1027		begin
1028		// Do nothing by default
#	Line 620 | Line 1034 | begin
1034		inherited Destroy;
1035		end;
1036
1037	+	procedure TFBAttachment.Disconnect(Force: boolean);
1038	+	begin
1039	+	inherited Disconnect(Force);
1040	+	ClearCachedInfo;
1041	+	end;
1042	+
1043		function TFBAttachment.getFirebirdAPI: IFirebirdAPI;
1044		begin
1045		Result := FFirebirdAPI;
#	Line 817 | Line 1237 | end;
1237
1238		function TFBAttachment.GetSQLDialect: integer;
1239		begin
1240	+	NeedDBInfo;
1241		Result := FSQLDialect;
1242		end;
1243
1244	+	function TFBAttachment.GetAttachmentID: integer;
1245	+	begin
1246	+	NeedDBInfo;
1247	+	Result := FAttachmentID;
1248	+	end;
1249	+
1250		function TFBAttachment.CreateBlob(transaction: ITransaction; RelationName,
1251		ColumnName: AnsiString; BPB: IBPB): IBlob;
1252		begin
#	Line 896 | Line 1323 | end;
1323
1324		function TFBAttachment.GetRemoteProtocol: AnsiString;
1325		begin
1326	+	NeedConnectionInfo;
1327		Result := FRemoteProtocol;
1328		end;
1329
1330		function TFBAttachment.GetAuthenticationMethod: AnsiString;
1331		begin
1332	+	NeedConnectionInfo;
1333		Result := FAuthMethod;
1334		end;
1335
1336		function TFBAttachment.GetSecurityDatabase: AnsiString;
1337		begin
1338	+	NeedConnectionInfo;
1339		Result := FSecDatabase;
1340		end;
1341
1342		function TFBAttachment.GetODSMajorVersion: integer;
1343		begin
1344	+	NeedDBInfo;
1345		Result := FODSMajorVersion;
1346		end;
1347
1348		function TFBAttachment.GetODSMinorVersion: integer;
1349		begin
1350	+	NeedDBInfo;
1351		Result := FODSMinorVersion;
1352		end;
1353
1354	+	function TFBAttachment.GetCharSetID: integer;
1355	+	begin
1356	+	NeedConnectionInfo;
1357	+	Result := FCharSetID;
1358	+	end;
1359	+
1360		function TFBAttachment.HasDecFloatSupport: boolean;
1361		begin
1362		Result := false;
#	Line 942 | Line 1380 | begin
1380		Result := false;
1381		end;
1382
1383	+	function TFBAttachment.HasTable(aTableName: AnsiString): boolean;
1384	+	begin
1385	+	Result := OpenCursorAtStart(
1386	+	'Select count(*) From RDB$RELATIONS Where RDB$RELATION_NAME = ?',
1387	+	[aTableName])[0].AsInteger > 0;
1388	+	end;
1389	+
1390	+	function TFBAttachment.HasFunction(aFunctionName: AnsiString): boolean;
1391	+	begin
1392	+	Result := OpenCursorAtStart(
1393	+	'Select count(*) From RDB$FUNCTIONS Where RDB$FUNCTION_NAME = ?',
1394	+	[aFunctionName])[0].AsInteger > 0;
1395	+	end;
1396	+
1397	+	function TFBAttachment.HasProcedure(aProcName: AnsiString): boolean;
1398	+	begin
1399	+	Result := OpenCursorAtStart(
1400	+	'Select count(*) From RDB$PROCEDURES Where RDB$PROCEDURE_NAME = ?',
1401	+	[aProcName])[0].AsInteger > 0;
1402	+	end;
1403	+
1404		function TFBAttachment.HasDefaultCharSet: boolean;
1405		begin
1406	+	NeedConnectionInfo;
1407		Result := FHasDefaultCharSet
1408		end;
1409
1410		function TFBAttachment.GetDefaultCharSetID: integer;
1411		begin
1412	+	NeedConnectionInfo;
1413		Result := FCharsetID;
1414		end;
1415

Comparing:
ibx/trunk/fbintf/client/FBAttachment.pas (property svn:eol-style), Revision 350 by tony, Wed Oct 20 14:58:56 2021 UTC vs.
ibx/branches/udr/client/FBAttachment.pas (property svn:eol-style), Revision 379 by tony, Mon Jan 10 10:08:03 2022 UTC

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