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root/public/ibx/branches/journaling/fbintf/client/2.5/FB25Statement.pas

Comparing:
ibx/trunk/fbintf/client/2.5/FB25Statement.pas (file contents), Revision 60 by tony, Mon Mar 27 15:21:02 2017 UTC vs.
ibx/branches/journaling/fbintf/client/2.5/FB25Statement.pas (file contents), Revision 362 by tony, Tue Dec 7 13:27:39 2021 UTC

#	Line 121 | Line 121 | type
121		TIBXSQLVAR = class(TSQLVarData)
122		private
123		FStatement: TFB25Statement;
124	+	FFirebird25ClientAPI: TFB25ClientAPI;
125		FBlob: IBlob;             {Cache references}
126		FArray: IArray;
127		FNullIndicator: short;
128		FOwnsSQLData: boolean;
129		FBlobMetaData: IBlobMetaData;
130		FArrayMetaData: IArrayMetaData;
131	+	FMetadataSize: short; {size of field from metadata}
132		FXSQLVAR: PXSQLVAR;       { Points to the PXSQLVAR in the owner object }
133		protected
134		function GetSQLType: cardinal; override;
#	Line 138 | Line 140 | type
140		function GetScale: integer; override;
141		function GetCharSetID: cardinal; override;
142		function GetCodePage: TSystemCodePage; override;
143	+	function GetCharSetWidth: integer; override;
144		function GetIsNull: Boolean;   override;
145		function GetIsNullable: boolean; override;
146		function GetSQLData: PByte;  override;
147		function GetDataLength: cardinal; override;
148	+	function GetSize: cardinal; override;
149	+	function GetAttachment: IAttachment; override;
150	+	function GetDefaultTextSQLType: cardinal; override;
151		procedure SetIsNull(Value: Boolean); override;
152		procedure SetIsNullable(Value: Boolean);  override;
153		procedure SetSQLData(AValue: PByte; len: cardinal); override;
#	Line 161 | Line 167 | type
167		procedure Initialize; override;
168
169		property Statement: TFB25Statement read FStatement;
170	+	property SQLType: cardinal read GetSQLType write SetSQLType;
171		end;
172
173		TIBXINPUTSQLDA = class;
#	Line 177 | Line 184 | type
184		function GetXSQLDA: PXSQLDA;
185		protected
186		FStatement: TFB25Statement;
187	+	FFirebird25ClientAPI: TFB25ClientAPI;
188		function GetTransactionSeqNo: integer; override;
189		procedure FreeXSQLDA;
190		function GetStatement: IStatement; override;
#	Line 228 | Line 236 | type
236		constructor Create(aResults: TIBXOUTPUTSQLDA);
237		destructor Destroy; override;
238		{IResultSet}
239	<	function FetchNext: boolean;
239	>	function FetchNext: boolean; {fetch next record}
240	>	function FetchPrior: boolean; {fetch previous record}
241	>	function FetchFirst:boolean; {fetch first record}
242	>	function FetchLast: boolean; {fetch last record}
243	>	function FetchAbsolute(position: Integer): boolean; {fetch record by its absolute position in result set}
244	>	function FetchRelative(offset: Integer): boolean; {fetch record by position relative to current}
245		function GetCursorName: AnsiString;
246		function GetTransaction: ITransaction; override;
247		function IsEof: boolean;
248	+	function IsBof: boolean;
249		procedure Close;
250		end;
251
#	Line 241 | Line 255 | type
255		private
256		FDBHandle: TISC_DB_HANDLE;
257		FHandle: TISC_STMT_HANDLE;
258	+	FFirebird25ClientAPI: TFB25ClientAPI;
259		FSQLParams: TIBXINPUTSQLDA;
260		FSQLRecord: TIBXOUTPUTSQLDA;
261		FCursor: AnsiString;               { Cursor name...}
#	Line 249 | Line 264 | type
264		protected
265		procedure CheckHandle; override;
266		procedure GetDsqlInfo(info_request: byte; buffer: ISQLInfoResults); override;
267	<	procedure InternalPrepare; override;
267	>	procedure InternalPrepare(CursorName: AnsiString=''); override;
268		function InternalExecute(aTransaction: ITransaction): IResults; override;
269	<	function InternalOpenCursor(aTransaction: ITransaction): IResultSet; override;
269	>	function InternalOpenCursor(aTransaction: ITransaction; Scrollable: boolean): IResultSet; override;
270	>	procedure ProcessSQL(sql: AnsiString; GenerateParamNames: boolean; var processedSQL: AnsiString); override;
271		procedure FreeHandle; override;
272		procedure InternalClose(Force: boolean); override;
273		public
274		constructor Create(Attachment: TFB25Attachment; Transaction: ITransaction;
275	<	sql: AnsiString; aSQLDialect: integer);
275	>	sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString='');
276		constructor CreateWithParameterNames(Attachment: TFB25Attachment;
277	<	Transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean);
277	>	Transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
278	>	CaseSensitiveParams: boolean=false; CursorName: AnsiString='');
279		destructor Destroy; override;
280		function FetchNext: boolean;
281
#	Line 350 | Line 367 | begin
367		CharSetID2CodePage(GetCharSetID,result);
368		end;
369
370	+	function TIBXSQLVAR.GetCharSetWidth: integer;
371	+	begin
372	+	result := 1;
373	+	with Statement.GetAttachment DO
374	+	CharSetWidth(GetCharSetID,result);
375	+	end;
376	+
377		function TIBXSQLVAR.GetIsNull: Boolean;
378		begin
379		result := IsNullable and (FNullIndicator = -1);
#	Line 370 | Line 394 | begin
394		Result := FXSQLVAR^.sqllen;
395		end;
396
397	+	function TIBXSQLVAR.GetSize: cardinal;
398	+	begin
399	+	Result := FMetadataSize;
400	+	end;
401	+
402	+	function TIBXSQLVAR.GetAttachment: IAttachment;
403	+	begin
404	+	Result := FStatement.GetAttachment;
405	+	end;
406	+
407		function TIBXSQLVAR.GetArrayMetaData: IArrayMetaData;
408		begin
409		if GetSQLType <> SQL_ARRAY then
#	Line 441 | Line 475 | procedure TIBXSQLVAR.Initialize;
475		begin
476		inherited Initialize;
477		FOwnsSQLData := true;
478	<	with FirebirdClientAPI, FXSQLVar^ do
478	>	with FFirebird25ClientAPI, FXSQLVar^ do
479		begin
480	+	FMetadataSize := sqllen;
481		case sqltype and (not 1) of
482		SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
483		SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT, SQL_BOOLEAN,
#	Line 468 | Line 503 | begin
503		else
504		sqlInd :=  nil;
505		end;
506	+	SaveMetaData;
507		end;
508
509		procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
#	Line 502 | Line 538 | begin
538		FXSQLVAR^.sqlind := nil;
539		end;
540		end;
541	+	Changed;
542		end;
543
544		procedure TIBXSQLVAR.SetSQLData(AValue: PByte; len: cardinal);
#	Line 511 | Line 548 | begin
548		FXSQLVAR^.sqldata := AValue;
549		FXSQLVAR^.sqllen := len;
550		FOwnsSQLData := false;
551	+	Changed;
552		end;
553
554		procedure TIBXSQLVAR.SetScale(aValue: integer);
555		begin
556		FXSQLVAR^.sqlscale := aValue;
557	+	Changed;
558		end;
559
560		procedure TIBXSQLVAR.SetDataLength(len: cardinal);
#	Line 523 | Line 562 | begin
562		if not FOwnsSQLData then
563		FXSQLVAR^.sqldata := nil;
564		FXSQLVAR^.sqllen := len;
565	<	with FirebirdClientAPI do
565	>	with FFirebird25ClientAPI do
566		IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
567		FOwnsSQLData := true;
568	+	Changed;
569		end;
570
571		procedure TIBXSQLVAR.SetSQLType(aValue: cardinal);
572		begin
573		FXSQLVAR^.sqltype := aValue or (FXSQLVAR^.sqltype and 1);
574	+	Changed;
575		end;
576
577		procedure TIBXSQLVAR.SetCharSetID(aValue: cardinal);
578		begin
579		if aValue <> GetCharSetID then
580	<	case SQLType of
581	<	SQL_VARYING, SQL_TEXT:
582	<	FXSQLVAR^.sqlsubtype := (aValue and $FF) or (FXSQLVAR^.sqlsubtype and not $FF);
583	<
584	<	SQL_BLOB,
585	<	SQL_ARRAY:
586	<	IBError(ibxeInvalidDataConversion,[nil]);
580	>	begin
581	>	case SQLType of
582	>	SQL_VARYING, SQL_TEXT:
583	>	FXSQLVAR^.sqlsubtype := (aValue and $FF) or (FXSQLVAR^.sqlsubtype and not $FF);
584	>
585	>	SQL_BLOB,
586	>	SQL_ARRAY:
587	>	IBError(ibxeInvalidDataConversion,[nil]);
588	>	end;
589	>	Changed;
590		end;
591		end;
592
593	+	function TIBXSQLVAR.GetDefaultTextSQLType: cardinal;
594	+	begin
595	+	Result := SQL_TEXT;
596	+	end;
597	+
598		constructor TIBXSQLVAR.Create(aParent: TIBXSQLDA; aIndex: integer);
599		begin
600		inherited Create(aParent,aIndex);
601		FStatement := aParent.Statement;
602	+	FFirebird25ClientAPI := aParent.FFirebird25ClientAPI;
603		end;
604
605		procedure TIBXSQLVAR.FreeSQLData;
#	Line 593 | Line 643 | begin
643		FResults.Column[i].RowChange;
644		end;
645
646	+	function TResultSet.FetchPrior: boolean;
647	+	begin
648	+	IBError(ibxeNoScrollableCursors,[]);
649	+	end;
650	+
651	+	function TResultSet.FetchFirst: boolean;
652	+	begin
653	+	IBError(ibxeNoScrollableCursors,[]);
654	+	end;
655	+
656	+	function TResultSet.FetchLast: boolean;
657	+	begin
658	+	IBError(ibxeNoScrollableCursors,[]);
659	+	end;
660	+
661	+	function TResultSet.FetchAbsolute(position: Integer): boolean;
662	+	begin
663	+	IBError(ibxeNoScrollableCursors,[]);
664	+	end;
665	+
666	+	function TResultSet.FetchRelative(offset: Integer): boolean;
667	+	begin
668	+	IBError(ibxeNoScrollableCursors,[]);
669	+	end;
670	+
671		function TResultSet.GetCursorName: AnsiString;
672		begin
673		Result := FResults.FStatement.FCursor;
#	Line 608 | Line 683 | begin
683		Result := FResults.FStatement.FEof;
684		end;
685
686	+	function TResultSet.IsBof: boolean;
687	+	begin
688	+	Result := FResults.FStatement.FBof;
689	+	end;
690	+
691		procedure TResultSet.Close;
692		begin
693		if FCursorSeqNo = FResults.FStatement.FCursorSeqNo then
#	Line 620 | Line 700 | procedure TIBXINPUTSQLDA.Bind;
700		begin
701		if Count = 0 then
702		Count := 1;
703	<	with Firebird25ClientAPI do
703	>	with FFirebird25ClientAPI do
704		begin
705		if (FXSQLDA <> nil) then
706		if isc_dsql_describe_bind(StatusVector, @(FStatement.Handle), FStatement.SQLDialect,
#	Line 652 | Line 732 | procedure TIBXOUTPUTSQLDA.Bind;
732		begin
733		{ Allocate an initial output descriptor (with one column) }
734		Count := 1;
735	<	with Firebird25ClientAPI do
735	>	with FFirebird25ClientAPI do
736		begin
737		{ Using isc_dsql_describe, get the right size for the columns... }
738		if isc_dsql_describe(StatusVector, @(FStatement.Handle), FStatement.SQLDialect, FXSQLDA) > 0 then
#	Line 687 | Line 767 | begin
767		len := sqllen;
768		if not IsNull and ((sqltype and (not 1)) = SQL_VARYING) then
769		begin
770	<	with FirebirdClientAPI do
770	>	with FFirebird25ClientAPI do
771		len := DecodeInteger(data,2);
772		Inc(data,2);
773		end;
#	Line 704 | Line 784 | constructor TIBXSQLDA.Create(aStatement:
784		begin
785		inherited Create;
786		FStatement := aStatement;
787	+	FFirebird25ClientAPI := aStatement.FFirebird25ClientAPI;
788		FSize := 0;
789		//  writeln('Creating ',ClassName);
790		end;
#	Line 790 | Line 871 | begin
871		OldSize := 0;
872		if Count > FSize then
873		begin
874	<	Firebird25ClientAPI.IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(Count));
874	>	FFirebird25ClientAPI.IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(Count));
875		SetLength(FColumnList, FCount);
876		FXSQLDA^.version := SQLDA_VERSION1;
877		p := @FXSQLDA^.sqlvar[0];
#	Line 888 | Line 969 | end;
969		procedure TFB25Statement.GetDsqlInfo(info_request: byte; buffer: ISQLInfoResults
970		);
971		begin
972	<	with Firebird25ClientAPI, buffer as TSQLInfoResultsBuffer do
972	>	with FFirebird25ClientAPI, buffer as TSQLInfoResultsBuffer do
973		if isc_dsql_sql_info(StatusVector, @(FHandle), 1, @info_request,
974		GetBufSize, Buffer) > 0 then
975		IBDatabaseError;
976		end;
977
978	<	procedure TFB25Statement.InternalPrepare;
978	>	procedure TFB25Statement.InternalPrepare(CursorName: AnsiString);
979		var
980	+	GUID: TGUID;
981		RB: ISQLInfoResults;
982		TRHandle: TISC_TR_HANDLE;
983		begin
984		if FPrepared then
985		Exit;
986	+
987		if (FSQL = '') then
988		IBError(ibxeEmptyQuery, [nil]);
989	+
990	+	FCursor := CursorName;
991	+	if FCursor = '' then
992	+	begin
993	+	CreateGuid(GUID);
994	+	FCursor := GUIDToString(GUID);
995	+	end;
996	+
997		try
998		CheckTransaction(FTransactionIntf);
999	<	with Firebird25ClientAPI do
999	>	with FFirebird25ClientAPI do
1000		begin
1001		Call(isc_dsql_alloc_statement2(StatusVector, @(FDBHandle),
1002		@FHandle), True);
#	Line 913 | Line 1004 | begin
1004		if FHasParamNames then
1005		begin
1006		if FProcessedSQL = '' then
1007	<	FSQLParams.PreprocessSQL(FSQL,FGenerateParamNames,FProcessedSQL);
1007	>	ProcessSQL(FSQL,FGenerateParamNames,FProcessedSQL);
1008		Call(isc_dsql_prepare(StatusVector, @(TRHandle), @FHandle, 0,
1009		PAnsiChar(FProcessedSQL), FSQLDialect, nil), True);
1010		end
#	Line 921 | Line 1012 | begin
1012		Call(isc_dsql_prepare(StatusVector, @(TRHandle), @FHandle, 0,
1013		PAnsiChar(FSQL), FSQLDialect, nil), True);
1014		end;
1015	+
1016		{ After preparing the statement, query the stmt type and possibly
1017		create a FSQLRecord "holder" }
1018		{ Get the type of the statement }
#	Line 930 | Line 1022 | begin
1022		else
1023		FSQLStatementType := SQLUnknown;
1024
1025	+	if FSQLStatementType = SQLSelect then
1026	+	with FFirebird25ClientAPI do
1027	+	Call(
1028	+	isc_dsql_set_cursor_name(StatusVector, @FHandle, PAnsiChar(FCursor), 0),
1029	+	True);
1030	+
1031		case FSQLStatementType of
1032		SQLGetSegment,
1033		SQLPutSegment,
#	Line 957 | Line 1055 | begin
1055		if (FHandle <> nil) then
1056		FreeHandle;
1057		if E is EIBInterBaseError then
1058	<	raise EIBInterBaseError.Create(EIBInterBaseError(E).SQLCode,
1059	<	EIBInterBaseError(E).IBErrorCode,
962	<	EIBInterBaseError(E).Message +
963	<	sSQLErrorSeparator + FSQL)
964	<	else
965	<	raise;
1058	>	E.Message := E.Message + sSQLErrorSeparator + FSQL;
1059	>	raise;
1060		end;
1061		end;
1062		FPrepared := true;
#	Line 994 | Line 1088 | begin
1088		CheckHandle;
1089		if aTransaction <> FTransactionIntf then
1090		AddMonitor(aTransaction as TFB25Transaction);
1091	<	if (FSQLParams.FTransactionSeqNo < (FTransactionIntf as TFB25transaction).TransactionSeqNo) then
1091	>	if FStaleReferenceChecks and (FSQLParams.FTransactionSeqNo < (FTransactionIntf as TFB25transaction).TransactionSeqNo) then
1092		IBError(ibxeInterfaceOutofDate,[nil]);
1093
1094		try
1095		TRHandle := (aTransaction as TFB25Transaction).Handle;
1096	<	with Firebird25ClientAPI do
1096	>	with FFirebird25ClientAPI do
1097		begin
1098		if FCollectStatistics then
1099		GetPerfCounters(FBeforeStats);
#	Line 1038 | Line 1132 | begin
1132		RemoveMonitor(aTransaction as TFB25Transaction);
1133		end;
1134		FExecTransactionIntf := aTransaction;
1135	+	FSQLRecord.FTransaction := aTransaction as TFB25Transaction;
1136	+	FSQLRecord.FTransactionSeqNo := FSQLRecord.FTransaction.TransactionSeqNo;
1137		Inc(FChangeSeqNo);
1138		end;
1139
1140	<	function TFB25Statement.InternalOpenCursor(aTransaction: ITransaction
1141	<	): IResultSet;
1140	>	function TFB25Statement.InternalOpenCursor(aTransaction: ITransaction;
1141	>	Scrollable: boolean): IResultSet;
1142		var TRHandle: TISC_TR_HANDLE;
1047	–	GUID : TGUID;
1143		begin
1144		if FSQLStatementType <> SQLSelect then
1145		IBError(ibxeIsASelectStatement,[]);
1146
1147	+	if Scrollable then
1148	+	IBError(ibxeNoScrollableCursors,[]);
1149	+
1150		CheckTransaction(aTransaction);
1151		if not FPrepared then
1152		InternalPrepare;
1153		CheckHandle;
1154		if aTransaction <> FTransactionIntf then
1155		AddMonitor(aTransaction as TFB25Transaction);
1156	<	if (FSQLParams.FTransactionSeqNo < (FTransactionIntf as TFB25transaction).TransactionSeqNo) then
1156	>	if FStaleReferenceChecks and (FSQLParams.FTransactionSeqNo < (FTransactionIntf as TFB25transaction).TransactionSeqNo) then
1157		IBError(ibxeInterfaceOutofDate,[nil]);
1158
1159	<	with Firebird25ClientAPI do
1159	>	with FFirebird25ClientAPI do
1160		begin
1161		if FCollectStatistics then
1162		GetPerfCounters(FBeforeStats);
#	Line 1070 | Line 1168 | begin
1168		SQLDialect,
1169		FSQLParams.AsXSQLDA,
1170		nil), True);
1073	–	if FCursor = '' then
1074	–	begin
1075	–	CreateGuid(GUID);
1076	–	FCursor := GUIDToString(GUID);
1077	–	Call(
1078	–	isc_dsql_set_cursor_name(StatusVector, @FHandle, PAnsiChar(FCursor), 0),
1079	–	True);
1080	–	end;
1171
1172		if FCollectStatistics then
1173		begin
#	Line 1097 | Line 1187 | begin
1187		Inc(FChangeSeqNo);
1188		end;
1189
1190	+	procedure TFB25Statement.ProcessSQL(sql: AnsiString; GenerateParamNames: boolean;
1191	+	var processedSQL: AnsiString);
1192	+	begin
1193	+	FSQLParams.PreprocessSQL(sql,GenerateParamNames, processedSQL);
1194	+	end;
1195	+
1196		procedure TFB25Statement.FreeHandle;
1197		var
1198		isc_res: ISC_STATUS;
#	Line 1105 | Line 1201 | begin
1201		ReleaseInterfaces;
1202		try
1203		if FHandle <> nil then
1204	<	with Firebird25ClientAPI do
1204	>	with FFirebird25ClientAPI do
1205		begin
1206		isc_res :=
1207		Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
#	Line 1125 | Line 1221 | var
1221		begin
1222		if (FHandle <> nil) and (SQLStatementType = SQLSelect) and FOpen then
1223		try
1224	<	with Firebird25ClientAPI do
1224	>	with FFirebird25ClientAPI do
1225		begin
1226		isc_res := Call(
1227		isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
#	Line 1146 | Line 1242 | begin
1242		end;
1243
1244		constructor TFB25Statement.Create(Attachment: TFB25Attachment;
1245	<	Transaction: ITransaction; sql: AnsiString; aSQLDialect: integer);
1245	>	Transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
1246	>	CursorName: AnsiString);
1247		begin
1248		inherited Create(Attachment,Transaction,sql,aSQLDialect);
1249		FDBHandle := Attachment.Handle;
1250	+	FFirebird25ClientAPI := Attachment.Firebird25ClientAPI;
1251	+	OnDatabaseError := FFirebird25ClientAPI.IBDataBaseError;
1252		FSQLParams := TIBXINPUTSQLDA.Create(self);
1253		FSQLRecord := TIBXOUTPUTSQLDA.Create(self);
1254	<	InternalPrepare;
1254	>	InternalPrepare(CursorName);
1255		end;
1256
1257	<	constructor TFB25Statement.CreateWithParameterNames(Attachment: TFB25Attachment;
1258	<	Transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
1259	<	GenerateParamNames: boolean);
1257	>	constructor TFB25Statement.CreateWithParameterNames(
1258	>	Attachment: TFB25Attachment; Transaction: ITransaction; sql: AnsiString;
1259	>	aSQLDialect: integer; GenerateParamNames: boolean;
1260	>	CaseSensitiveParams: boolean; CursorName: AnsiString);
1261		begin
1262		inherited CreateWithParameterNames(Attachment,Transaction,sql,aSQLDialect,GenerateParamNames);
1263		FDBHandle := Attachment.Handle;
1264	+	FFirebird25ClientAPI := Attachment.Firebird25ClientAPI;
1265	+	OnDatabaseError := FFirebird25ClientAPI.IBDataBaseError;
1266		FSQLParams := TIBXINPUTSQLDA.Create(self);
1267	+	FSQLParams.CaseSensitiveParams := CaseSensitiveParams;
1268		FSQLRecord := TIBXOUTPUTSQLDA.Create(self);
1269	<	InternalPrepare;
1269	>	InternalPrepare(CursorName);
1270		end;
1271
1272		destructor TFB25Statement.Destroy;
#	Line 1183 | Line 1286 | begin
1286		if FEOF then
1287		IBError(ibxeEOF,[nil]);
1288
1289	<	with Firebird25ClientAPI do
1289	>	with FFirebird25ClientAPI do
1290		begin
1291		{ Go to the next record... }
1292		fetch_res :=
#	Line 1209 | Line 1312 | begin
1312		FBOF := false;
1313		result := true;
1314		end;
1315	+	if FCollectStatistics then
1316	+	begin
1317	+	GetPerfCounters(FAfterStats);
1318	+	FStatisticsAvailable := true;
1319	+	end;
1320		end;
1321		FSQLRecord.RowChange;
1322		if FEOF then
#	Line 1241 | Line 1349 | begin
1349		result := ''
1350		else
1351		begin
1352	<	RB := TSQLInfoResultsBuffer.Create(4*4096);
1352	>	RB := TSQLInfoResultsBuffer.Create(FFirebird25ClientAPI,4*4096);
1353		GetDsqlInfo(isc_info_sql_get_plan,RB);
1354		if RB.Count > 0 then
1355		Result := RB[0].GetAsString;

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