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ibx/branches/journaling/fbintf/client/FBAttachment.pas (file contents), Revision 362 by tony, Tue Dec 7 13:27:39 2021 UTC vs.
ibx/branches/udr/client/FBAttachment.pas (file contents), Revision 389 by tony, Thu Jan 20 23:33:40 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 sTransCommitFailJnl    = '*F:''%s'',%d,%d,%d' + LineEnding;
100	+	const sTransCommitRetJnl     = '*c:''%s'',%d,%d,%d,%d' + LineEnding;
101	+	const sTransRollBackJnl      = '*R:''%s'',%d,%d,%d' + LineEnding;
102	+	const sTransRollBackFailJnl  = '*f:''%s'',%d,%d,%d' + LineEnding;
103	+	const sTransRollBackRetJnl   = '*r:''%s'',%d,%d,%d,%d' + LineEnding;
104	+	private
105	+	FOptions: TJournalOptions;
106	+	FJournalFilePath: string;
107	+	FJournalFileStream: TStream;
108	+	FSessionID: integer;
109	+	FDoNotJournal: boolean;
110	+	function GetDateTimeFmt: AnsiString;
111	+	protected
112	+	procedure EndSession(RetainJournal: boolean);
113	+	function GetAttachment: IAttachment; virtual; abstract;
114	+	public
115	+	{IAttachment}
116	+	procedure Disconnect(Force: boolean=false); virtual;
117	+	public
118	+	{IJournallingHook}
119	+	procedure TransactionStart(Tr: ITransaction);
120	+	function TransactionEnd( TransactionID: integer; Completion: TTrCompletionState): boolean;
121	+	procedure TransactionRetained(Tr: ITransaction; OldTransactionID: integer;
122	+	Action: TTransactionAction);
123	+	procedure ExecQuery(Stmt: IStatement);
124	+	procedure ExecImmediateJnl(sql: AnsiString; tr: ITransaction);
125	+	public
126	+	{Client side Journaling}
127	+	function JournalingActive: boolean;
128	+	function GetJournalOptions: TJournalOptions;
129	+	function StartJournaling(aJournalLogFile: AnsiString): integer; overload;
130	+	function StartJournaling(aJournalLogFile: AnsiString; Options: TJournalOptions): integer; overload;
131	+	function StartJournaling(S: TStream; Options: TJournalOptions): integer; overload;
132	+	procedure StopJournaling(RetainJournal: boolean);
133	+	end;
134	+
135		{ TFBAttachment }
136
137	<	TFBAttachment = class(TActivityHandler)
137	>	TFBAttachment = class(TFBJournaling)
138		private
139		FDPB: IDPB;
140		FFirebirdAPI: IFirebirdAPI;
#	Line 64 | Line 143 | type
143		FUserCharSetMap: array of TCharSetMap;
144		FSecDatabase: AnsiString;
145		FInlineBlobLimit: integer;
146	<	protected
68	<	FDatabaseName: AnsiString;
69	<	FRaiseExceptionOnConnectError: boolean;
146	>	FAttachmentID: integer;
147		FSQLDialect: integer;
148		FHasDefaultCharSet: boolean;
149		FCharSetID: integer;
150		FCodePage: TSystemCodePage;
151		FRemoteProtocol: AnsiString;
152		FAuthMethod: AnsiString;
153	+	FHasConnectionInfo: boolean;
154	+	procedure NeedDBInfo;
155	+	procedure NeedConnectionInfo;
156	+	protected
157	+	FDatabaseName: AnsiString;
158	+	FRaiseExceptionOnConnectError: boolean;
159		constructor Create(api: TFBClientAPI; DatabaseName: AnsiString; DPB: IDPB;
160		RaiseExceptionOnConnectError: boolean);
161		procedure CheckHandle; virtual; abstract;
162	+	procedure ClearCachedInfo;
163		function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
80	–	procedure GetODSAndConnectionInfo;
164		function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; virtual; abstract;
165		function IsConnected: boolean; virtual; abstract;
166		procedure EndAllTransactions;
167		procedure DPBFromCreateSQL(CreateSQL: AnsiString);
168		procedure SetParameters(SQLParams: ISQLParams; params: array of const);
169	+	procedure SetSQLDialect(aValue: integer);
170		procedure UseServerICUChanged; virtual;
171		public
172		destructor Destroy; override;
173	+	procedure Disconnect(Force: boolean); override;
174		function getFirebirdAPI: IFirebirdAPI;
175		function getDPB: IDPB;
176		function AllocateBPB: IBPB;
177		function AllocateDIRB: IDIRB;
178	<	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
179	<	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
180	<	procedure Disconnect(Force: boolean=false); virtual; abstract;
178	>	function StartTransaction(TPB: array of byte;
179	>	DefaultCompletion: TTransactionCompletion;
180	>	aName: AnsiString=''): ITransaction; overload; virtual; abstract;
181	>	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion;
182	>	aName: AnsiString=''): ITransaction; overload; virtual; abstract;
183		procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
184		procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
185		procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
#	Line 140 | Line 227 | type
227		function GetEventHandler(Event: AnsiString): IEvents; overload;
228
229		function GetSQLDialect: integer;
230	+	function GetAttachmentID: integer;
231		function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
232		function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
233		function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
#	Line 150 | Line 238 | type
238		function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; virtual; abstract;
239		function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray; overload;
240		function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; virtual; abstract;
241	<	property SQLDialect: integer read FSQLDialect;
241	>	property SQLDialect: integer read GetSQLDialect;
242		property DPB: IDPB read FDPB;
243		public
244		function GetDBInformation(Requests: array of byte): IDBInformation; overload;
#	Line 162 | Line 250 | type
250		function GetSecurityDatabase: AnsiString;
251		function GetODSMajorVersion: integer;
252		function GetODSMinorVersion: integer;
253	+	function GetCharSetID: integer;
254		function HasDecFloatSupport: boolean; virtual;
255		function GetInlineBlobLimit: integer;
256		procedure SetInlineBlobLimit(limit: integer);
257		function HasBatchMode: boolean; virtual;
258	+	function HasTable(aTableName: AnsiString): boolean;
259	+	function HasFunction(aFunctionName: AnsiString): boolean;
260	+	function HasProcedure(aProcName: AnsiString): boolean;
261
262		public
263		{Character Sets}
#	Line 180 | Line 272 | type
272		AllowReverseLookup:boolean; out CharSetID: integer);
273		function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; virtual; abstract;
274		function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; virtual; abstract;
275	<	property CharSetID: integer read FCharSetID;
275	>	property CharSetID: integer read GetCharSetID;
276		property CodePage: TSystemCodePage read FCodePage;
277
278		public
#	Line 214 | Line 306 | type
306
307		implementation
308
309	<	uses FBMessages, IBUtils, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
309	>	uses FBMessages, IBErrorCodes, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
310	>
311	>	const
312	>	{Journaling}
313	>	sJournalTableName = 'IBX$JOURNALS';
314	>	sSequenceName = 'IBX$SESSIONS';
315	>
316	>	sqlCreateJournalTable =
317	>	'Create Table ' + sJournalTableName + '(' +
318	>	'  IBX$SessionID Integer not null, '+
319	>	'  IBX$TransactionID Integer not null, '+
320	>	'  IBX$OldTransactionID Integer, '+
321	>	'  IBX$USER VarChar(32) Default CURRENT_USER, '+
322	>	'  IBX$CREATED TIMESTAMP Default CURRENT_TIMESTAMP, '+
323	>	'  Primary Key(IBX$SessionID,IBX$TransactionID)' +
324	>	')';
325	>
326	>	sqlCreateSequence = 'CREATE SEQUENCE ' + sSequenceName;
327	>
328	>	sqlGetNextSessionID = 'Select Gen_ID(' + sSequenceName + ',1) as SessionID From RDB$DATABASE';
329	>
330	>	sqlRecordJournalEntry = 'Insert into ' + sJournalTableName + '(IBX$SessionID,IBX$TransactionID,IBX$OldTransactionID) '+
331	>	'Values(?,?,?)';
332	>
333	>	sqlCleanUpSession = 'Delete From ' + sJournalTableName + ' Where IBX$SessionID = ?';
334
335		const
336		CharSetMap: array [0..69] of TCharsetMap = (
#	Line 370 | Line 486 | const
486		'process_name',
487		'trusted_role',
488		'org_filename',
489	<	'utf8_ilename',
489	>	'utf8_filename',
490		'ext_call_depth',
491		'auth_block',
492		'client_version',
#	Line 391 | Line 507 | const
507		'decfloat_traps'
508		);
509
510	+	type
511	+
512	+	{ TQueryProcessor }
513	+
514	+	TQueryProcessor=class(TSQLTokeniser)
515	+	private
516	+	FInString: AnsiString;
517	+	FIndex: integer;
518	+	FStmt: IStatement;
519	+	function DoExecute: AnsiString;
520	+	function GetParamValue(ParamIndex: integer): AnsiString;
521	+	protected
522	+	function GetChar: AnsiChar; override;
523	+	public
524	+	class function Execute(Stmt: IStatement): AnsiString;
525	+	end;
526	+
527	+	{ TQueryProcessor }
528	+
529	+	function TQueryProcessor.DoExecute: AnsiString;
530	+	var token: TSQLTokens;
531	+	ParamIndex: integer;
532	+	begin
533	+	Result := '';
534	+	ParamIndex := 0;
535	+
536	+	while not EOF do
537	+	begin
538	+	token := GetNextToken;
539	+	case token of
540	+	sqltPlaceHolder:
541	+	begin
542	+	Result := Result + GetParamValue(ParamIndex);
543	+	Inc(ParamIndex);
544	+	end;
545	+	else
546	+	Result := Result + TokenText;
547	+	end;
548	+	end;
549	+	end;
550	+
551	+	function TQueryProcessor.GetParamValue(ParamIndex: integer): AnsiString;
552	+	begin
553	+	with FStmt.SQLParams[ParamIndex] do
554	+	begin
555	+	if IsNull then
556	+	Result := 'NULL'
557	+	else
558	+	case GetSQLType of
559	+	SQL_BLOB:
560	+	if getSubType = 1 then {string}
561	+	Result := '''' + SQLSafeString(GetAsString) + ''''
562	+	else
563	+	Result := TSQLXMLReader.FormatBlob(GetAsString,getSubType);
564	+
565	+	SQL_ARRAY:
566	+	Result := TSQLXMLReader.FormatArray(getAsArray);
567	+
568	+	SQL_VARYING,
569	+	SQL_TEXT,
570	+	SQL_TIMESTAMP,
571	+	SQL_TYPE_DATE,
572	+	SQL_TYPE_TIME,
573	+	SQL_TIMESTAMP_TZ_EX,
574	+	SQL_TIME_TZ_EX,
575	+	SQL_TIMESTAMP_TZ,
576	+	SQL_TIME_TZ:
577	+	Result := '''' + SQLSafeString(GetAsString) + '''';
578	+	else
579	+	Result := GetAsString;
580	+	end;
581	+	end;
582	+	end;
583	+
584	+	function TQueryProcessor.GetChar: AnsiChar;
585	+	begin
586	+	if FIndex <= Length(FInString) then
587	+	begin
588	+	Result := FInString[FIndex];
589	+	Inc(FIndex);
590	+	end
591	+	else
592	+	Result := #0;
593	+	end;
594	+
595	+	class function TQueryProcessor.Execute(Stmt: IStatement): AnsiString;
596	+	begin
597	+	if not Stmt.IsPrepared then
598	+	IBError(ibxeSQLClosed,[]);
599	+	with self.Create do
600	+	try
601	+	FStmt := Stmt;
602	+	FInString := Stmt.GetProcessedSQLText;
603	+	FIndex := 1;
604	+	Result := Trim(DoExecute);
605	+	finally
606	+	Free;
607	+	end;
608	+	end;
609	+
610	+	{ TFBJournaling }
611	+
612	+	function TFBJournaling.GetDateTimeFmt: AnsiString;
613	+	begin
614	+	{$IF declared(DefaultFormatSettings)}
615	+	with DefaultFormatSettings do
616	+	{$ELSE}
617	+	{$IF declared(FormatSettings)}
618	+	with FormatSettings do
619	+	{$IFEND}
620	+	{$IFEND}
621	+	Result := ShortDateFormat + ' ' + LongTimeFormat + '.zzzz'
622	+	end;
623	+
624	+	procedure TFBJournaling.EndSession(RetainJournal: boolean);
625	+	begin
626	+	if JournalingActive and (FJournalFilePath <> '') then
627	+	begin
628	+	FreeAndNil(FJournalFileStream);
629	+	if not (joNoServerTable in FOptions) and not RetainJournal then
630	+	try
631	+	GetAttachment.ExecuteSQL([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],
632	+	sqlCleanUpSession,[FSessionID]);
633	+	sysutils.DeleteFile(FJournalFilePath);
634	+	except On E: EIBInterBaseError do
635	+	if E.IBErrorCode <> isc_lost_db_connection then
636	+	raise;
637	+	{ignore - do not delete journal if database gone away}
638	+	end;
639	+	FSessionID := -1;
640	+	end;
641	+	end;
642	+
643	+	procedure TFBJournaling.Disconnect(Force: boolean);
644	+	begin
645	+	if JournalingActive then
646	+	EndSession(Force);
647	+	end;
648	+
649	+	procedure TFBJournaling.TransactionStart(Tr: ITransaction);
650	+	var LogEntry: AnsiString;
651	+	TPBText: AnsiString;
652	+	begin
653	+	if not (joNoServerTable in FOptions) then
654	+	try
655	+	FDoNotJournal := true;
656	+	GetAttachment.ExecuteSQL(Tr,sqlRecordJournalEntry,[FSessionID,Tr.GetTransactionID,NULL]);
657	+	finally
658	+	FDoNotJournal := false;
659	+	end;
660	+	TPBText := Tr.getTPB.AsText;
661	+	LogEntry := Format(sTransStartJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
662	+	GetAttachment.GetAttachmentID,
663	+	FSessionID,
664	+	Tr.GetTransactionID,
665	+	Length(Tr.TransactionName),
666	+	Tr.TransactionName,
667	+	Length(TPBText),TPBText,
668	+	ord(tr.GetDefaultCompletion)]);
669	+	if assigned(FJournalFileStream) then
670	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
671	+	end;
672	+
673	+	function TFBJournaling.TransactionEnd(TransactionID: integer;
674	+	Completion: TTrCompletionState): boolean;
675	+
676	+	var LogEntry: AnsiString;
677	+	begin
678	+	Result := false;
679	+	case Completion of
680	+	trRolledback:
681	+	begin
682	+	LogEntry := Format(sTransRollbackJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
683	+	GetAttachment.GetAttachmentID,
684	+	FSessionID,TransactionID]);
685	+	Result := true;
686	+	end;
687	+
688	+	trRollbackFailed:
689	+	begin
690	+	LogEntry := Format(sTransRollbackFailJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
691	+	GetAttachment.GetAttachmentID,
692	+	FSessionID,TransactionID]);
693	+	Result := true;
694	+	end;
695	+
696	+	trCommitted:
697	+	begin
698	+	LogEntry := Format(sTransCommitJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
699	+	GetAttachment.GetAttachmentID,
700	+	FSessionID,TransactionID]);
701	+	Result := true;
702	+	end;
703	+
704	+	trCommitFailed:
705	+	begin
706	+	LogEntry := Format(sTransCommitFailJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
707	+	GetAttachment.GetAttachmentID,
708	+	FSessionID,TransactionID]);
709	+	Result := true;
710	+	end;
711	+	end;
712	+	if assigned(FJournalFileStream) then
713	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
714	+	end;
715	+
716	+	procedure TFBJournaling.TransactionRetained(Tr: ITransaction;
717	+	OldTransactionID: integer; Action: TTransactionAction);
718	+	var LogEntry: AnsiString;
719	+	begin
720	+	case Action of
721	+	TACommitRetaining:
722	+	LogEntry := Format(sTransCommitRetJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
723	+	GetAttachment.GetAttachmentID,
724	+	FSessionID,Tr.GetTransactionID,OldTransactionID]);
725	+	TARollbackRetaining:
726	+	LogEntry := Format(sTransRollbackRetJnl,[FBFormatDateTime(GetDateTimeFmt,Now),
727	+	GetAttachment.GetAttachmentID,
728	+	FSessionID,Tr.GetTransactionID,OldTransactionID]);
729	+	end;
730	+	if assigned(FJournalFileStream) then
731	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
732	+
733	+	if not (joNoServerTable in FOptions) then
734	+	try
735	+	FDoNotJournal := true;
736	+	GetAttachment.ExecuteSQL(Tr,sqlRecordJournalEntry,[FSessionID,Tr.GetTransactionID,OldTransactionID]);
737	+	finally
738	+	FDoNotJournal := false;
739	+	end;
740	+	end;
741	+
742	+	procedure TFBJournaling.ExecQuery(Stmt: IStatement);
743	+	var SQL: AnsiString;
744	+	LogEntry: AnsiString;
745	+	begin
746	+	SQL := TQueryProcessor.Execute(Stmt);
747	+	LogEntry := Format(sQueryJournal,[FBFormatDateTime(GetDateTimeFmt,Now),
748	+	GetAttachment.GetAttachmentID,
749	+	FSessionID,
750	+	Stmt.GetTransaction.GetTransactionID,
751	+	Length(SQL),SQL]);
752	+	if assigned(FJournalFileStream) then
753	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
754	+	end;
755	+
756	+	procedure TFBJournaling.ExecImmediateJnl(sql: AnsiString; tr: ITransaction);
757	+	var LogEntry: AnsiString;
758	+	begin
759	+	LogEntry := Format(sQueryJournal,[FBFormatDateTime(GetDateTimeFmt,Now),
760	+	GetAttachment.GetAttachmentID,
761	+	FSessionID,
762	+	tr.GetTransactionID,
763	+	Length(sql),sql]);
764	+	if assigned(FJournalFileStream) then
765	+	FJournalFileStream.Write(LogEntry[1],Length(LogEntry));
766	+	end;
767	+
768	+	function TFBJournaling.JournalingActive: boolean;
769	+	begin
770	+	Result := (FJournalFileStream <> nil) and not FDoNotJournal;
771	+	end;
772	+
773	+	function TFBJournaling.GetJournalOptions: TJournalOptions;
774	+	begin
775	+	Result := FOptions;
776	+	end;
777	+
778	+	function TFBJournaling.StartJournaling(aJournalLogFile: AnsiString): integer;
779	+	begin
780	+	Result := StartJournaling(aJournalLogFile,[joReadWriteTransactions,joModifyQueries]);
781	+	end;
782	+
783	+	function TFBJournaling.StartJournaling(aJournalLogFile: AnsiString;
784	+	Options: TJournalOptions): integer;
785	+	begin
786	+	try
787	+	StartJournaling(TFileStream.Create(aJournalLogFile,fmCreate),Options);
788	+	finally
789	+	FJournalFilePath := aJournalLogFile;
790	+	end;
791	+	end;
792	+
793	+	function TFBJournaling.StartJournaling(S: TStream; Options: TJournalOptions
794	+	): integer;
795	+	begin
796	+	FOptions := Options;
797	+	if not (joNoServerTable in FOptions) then
798	+	with GetAttachment do
799	+	begin
800	+	if  not HasTable(sJournalTableName) then
801	+	begin
802	+	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateJournalTable);
803	+	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateSequence);
804	+	end;
805	+	FSessionID := OpenCursorAtStart(sqlGetNextSessionID)[0].AsInteger;
806	+	end;
807	+	FJournalFileStream := S;
808	+	Result := FSessionID;
809	+	end;
810
811	+	procedure TFBJournaling.StopJournaling(RetainJournal: boolean);
812	+	begin
813	+	EndSession(RetainJournal);
814	+	end;
815
816		{ TFBAttachment }
817
818	<	procedure TFBAttachment.GetODSAndConnectionInfo;
819	<	var DBInfo: IDBInformation;
400	<	i: integer;
401	<	Stmt: IStatement;
818	>	procedure TFBAttachment.NeedConnectionInfo;
819	>	var Stmt: IStatement;
820		ResultSet: IResultSet;
821		Param: IDPBItem;
822		begin
823	<	if not IsConnected then Exit;
824	<	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	<
823	>	if not IsConnected or FHasConnectionInfo then Exit;
824	>	NeedDBInfo;
825		FCharSetID := 0;
826		FRemoteProtocol := '';
827		FAuthMethod := 'Legacy_Auth';
#	Line 461 | Line 867 | begin
867		end;
868		end;
869		FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
870	+	FHasConnectionInfo := true;
871	+	end;
872	+
873	+	procedure TFBAttachment.NeedDBInfo;
874	+	var DBInfo: IDBInformation;
875	+	i: integer;
876	+	begin
877	+	if not IsConnected or (FAttachmentID > 0) then Exit;
878	+	DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
879	+	isc_info_db_SQL_Dialect, isc_info_attachment_id]);
880	+	for i := 0 to DBInfo.GetCount - 1 do
881	+	with DBInfo[i] do
882	+	case getItemType of
883	+	isc_info_ods_minor_version:
884	+	FODSMinorVersion := getAsInteger;
885	+	isc_info_ods_version:
886	+	FODSMajorVersion := getAsInteger;
887	+	isc_info_db_SQL_Dialect:
888	+	FSQLDialect := getAsInteger;
889	+	isc_info_attachment_id:
890	+	FAttachmentID := getAsInteger;
891	+	end;
892		end;
893
894		constructor TFBAttachment.Create(api: TFBClientAPI; DatabaseName: AnsiString;
#	Line 470 | Line 898 | begin
898		FFirebirdAPI := api.GetAPI; {Keep reference to interface}
899		FSQLDialect := 3;
900		FDatabaseName := DatabaseName;
473	–	FDPB := DPB;
901		SetLength(FUserCharSetMap,0);
902	+	ClearCachedInfo;
903	+	FInlineBlobLimit := DefaultMaxInlineBlobLimit;
904	+	FDPB := DPB;
905		FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
906	+	end;
907	+
908	+	procedure TFBAttachment.ClearCachedInfo;
909	+	begin
910	+	FHasDefaultCharSet := false;
911	+	FAttachmentID := 0;
912		FODSMajorVersion := 0;
913		FODSMinorVersion := 0;
914	<	FInlineBlobLimit := DefaultMaxInlineBlobLimit;
914	>	FCodePage := CP_NONE;
915	>	FCharSetID := 0;
916	>	FRemoteProtocol := '';
917	>	FAuthMethod := '';
918	>	FSecDatabase := '';
919	>	FHasConnectionInfo := false;
920		end;
921
922		function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString;  aDPB: IDPB): AnsiString;
#	Line 609 | Line 1050 | begin
1050		end;
1051		end;
1052
1053	+	procedure TFBAttachment.SetSQLDialect(aValue: integer);
1054	+	begin
1055	+	FSQLDialect := aValue;
1056	+	end;
1057	+
1058		procedure TFBAttachment.UseServerICUChanged;
1059		begin
1060		// Do nothing by default
#	Line 620 | Line 1066 | begin
1066		inherited Destroy;
1067		end;
1068
1069	+	procedure TFBAttachment.Disconnect(Force: boolean);
1070	+	begin
1071	+	inherited Disconnect(Force);
1072	+	ClearCachedInfo;
1073	+	end;
1074	+
1075		function TFBAttachment.getFirebirdAPI: IFirebirdAPI;
1076		begin
1077		Result := FFirebirdAPI;
#	Line 642 | Line 1094 | end;
1094
1095		procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
1096		aSQLDialect: integer);
1097	+	var tr: ITransaction;
1098		begin
1099	<	ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
1099	>	tr := StartTransaction(TPB,taCommit);
1100	>	try
1101	>	ExecImmediate(tr,sql,aSQLDialect);
1102	>	tr.Commit;
1103	>	except
1104	>	tr.Rollback(true);
1105	>	raise;
1106	>	end;
1107		end;
1108
1109		procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
#	Line 653 | Line 1113 | end;
1113
1114		procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
1115		begin
1116	<	ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
1116	>	ExecImmediate(TPB,sql,FSQLDialect);
1117		end;
1118
1119		function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
1120		SQLDialect: integer; params: array of const): IResults;
1121	+	var tr: ITransaction;
1122		begin
1123	<	Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,SQLDialect,params);
1123	>	tr := StartTransaction(TPB,taCommit);
1124	>	try
1125	>	Result := ExecuteSQL(tr,sql,SQLDialect,params);
1126	>	except
1127	>	tr.Rollback(true);
1128	>	raise;
1129	>	end;
1130		end;
1131
1132		function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
#	Line 675 | Line 1142 | end;
1142		function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
1143		params: array of const): IResults;
1144		begin
1145	<	Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
1145	>	Result := ExecuteSQL(TPB,sql,FSQLDialect,params);
1146		end;
1147
1148		function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
1149		params: array of const): IResults;
1150		begin
1151	<	with Prepare(transaction,sql,FSQLDialect) do
685	<	begin
686	<	SetParameters(SQLParams,params);
687	<	Result := Execute;
688	<	end;
1151	>	Result := ExecuteSQL(transaction,sql,FSQLDialect,params);
1152		end;
1153
1154		function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
#	Line 778 | Line 1241 | end;
1241
1242		function TFBAttachment.OpenCursorAtStart(sql: AnsiString; Scrollable: boolean;
1243		params: array of const): IResultSet;
1244	+	var tr: ITransaction;
1245		begin
1246	<	Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,
1247	<	Scrollable,params);
1246	>	tr := StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit);
1247	>	try
1248	>	Result := OpenCursorAtStart(tr,sql,FSQLDialect,Scrollable,params);
1249	>	except
1250	>	tr.Rollback(true);
1251	>	raise;
1252	>	end;
1253		end;
1254
1255		function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
1256		params: array of const): IResultSet;
1257		begin
1258	<	Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,
790	<	false,params);
1258	>	Result := OpenCursorAtStart(sql,false,params);
1259		end;
1260
1261		function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString;
#	Line 817 | Line 1285 | end;
1285
1286		function TFBAttachment.GetSQLDialect: integer;
1287		begin
1288	+	NeedDBInfo;
1289		Result := FSQLDialect;
1290		end;
1291
1292	+	function TFBAttachment.GetAttachmentID: integer;
1293	+	begin
1294	+	NeedDBInfo;
1295	+	Result := FAttachmentID;
1296	+	end;
1297	+
1298		function TFBAttachment.CreateBlob(transaction: ITransaction; RelationName,
1299		ColumnName: AnsiString; BPB: IBPB): IBlob;
1300		begin
#	Line 896 | Line 1371 | end;
1371
1372		function TFBAttachment.GetRemoteProtocol: AnsiString;
1373		begin
1374	+	NeedConnectionInfo;
1375		Result := FRemoteProtocol;
1376		end;
1377
1378		function TFBAttachment.GetAuthenticationMethod: AnsiString;
1379		begin
1380	+	NeedConnectionInfo;
1381		Result := FAuthMethod;
1382		end;
1383
1384		function TFBAttachment.GetSecurityDatabase: AnsiString;
1385		begin
1386	+	NeedConnectionInfo;
1387		Result := FSecDatabase;
1388		end;
1389
1390		function TFBAttachment.GetODSMajorVersion: integer;
1391		begin
1392	+	NeedDBInfo;
1393		Result := FODSMajorVersion;
1394		end;
1395
1396		function TFBAttachment.GetODSMinorVersion: integer;
1397		begin
1398	+	NeedDBInfo;
1399		Result := FODSMinorVersion;
1400		end;
1401
1402	+	function TFBAttachment.GetCharSetID: integer;
1403	+	begin
1404	+	NeedConnectionInfo;
1405	+	Result := FCharSetID;
1406	+	end;
1407	+
1408		function TFBAttachment.HasDecFloatSupport: boolean;
1409		begin
1410		Result := false;
#	Line 942 | Line 1428 | begin
1428		Result := false;
1429		end;
1430
1431	+	function TFBAttachment.HasTable(aTableName: AnsiString): boolean;
1432	+	begin
1433	+	Result := OpenCursorAtStart(
1434	+	'Select count(*) From RDB$RELATIONS Where RDB$RELATION_NAME = ?',
1435	+	[aTableName])[0].AsInteger > 0;
1436	+	end;
1437	+
1438	+	function TFBAttachment.HasFunction(aFunctionName: AnsiString): boolean;
1439	+	begin
1440	+	Result := OpenCursorAtStart(
1441	+	'Select count(*) From RDB$FUNCTIONS Where RDB$FUNCTION_NAME = ?',
1442	+	[aFunctionName])[0].AsInteger > 0;
1443	+	end;
1444	+
1445	+	function TFBAttachment.HasProcedure(aProcName: AnsiString): boolean;
1446	+	begin
1447	+	Result := OpenCursorAtStart(
1448	+	'Select count(*) From RDB$PROCEDURES Where RDB$PROCEDURE_NAME = ?',
1449	+	[aProcName])[0].AsInteger > 0;
1450	+	end;
1451	+
1452		function TFBAttachment.HasDefaultCharSet: boolean;
1453		begin
1454	+	NeedConnectionInfo;
1455		Result := FHasDefaultCharSet
1456		end;
1457
1458		function TFBAttachment.GetDefaultCharSetID: integer;
1459		begin
1460	+	NeedConnectionInfo;
1461		Result := FCharsetID;
1462		end;
1463

Comparing:
ibx/branches/journaling/fbintf/client/FBAttachment.pas (property svn:eol-style), Revision 362 by tony, Tue Dec 7 13:27:39 2021 UTC vs.
ibx/branches/udr/client/FBAttachment.pas (property svn:eol-style), Revision 389 by tony, Thu Jan 20 23:33:40 2022 UTC

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