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Comparing ibx/trunk/runtime/IBSQL.pas (file contents):
Revision 35 by tony, Tue Jan 26 14:38:47 2016 UTC vs.
Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC

#	Line 35 | Line 35 | unit IBSQL;
35
36		{$Mode Delphi}
37
38	<	{ IBSQL param names in dialect 3 quoted format (e.g. :"MyParam") are by default disabled.
39	<
40	<	Dialect 3 quoted format parameter names represent a significant overhead and are of
41	<	limited value - especially for users that use only TIBSQL or TIBCustomDataset
42	<	descendents. They were previously used internally by IBX to simplify SQL generation
43	<	for TTable components in Master/Slave relationships which are linked by
44	<	Dialect 3 names. They were also generated by TStoredProc when the original
45	<	parameter names are quoted.
46	<
47	<	However, for some users they do cause a big processing overhead. The TTable/TStoredProc
48	<	code has been re-written so that they are no required by IBX internally.
49	<	The code to support quoted parameter names is now subject  to conditional compilation.
50	<	To enable support, ALLOWDIALECT3PARAMNAMES should be defined when IBX is compiled.
51	<
52	<	Hint: deleting the space between the brace and the dollar sign below
53	<
54	<	}
55	<
56	<	{ $define ALLOWDIALECT3PARAMNAMES}
57	<
58	<	{$ifndef ALLOWDIALECT3PARAMNAMES}
59	<
60	<	{ Even when dialect 3 quoted format parameter names are not supported, IBX still processes
61	<	parameter names case insensitive. This does result in some additional overhead
62	<	due to a call to "AnsiUpperCase". This can be avoided by undefining
63	<	"UseCaseSensitiveParamName" below.
64	<
65	<	Note: do not define "UseCaseSensitiveParamName" when "ALLOWDIALECT3PARAMNAMES"
66	<	is defined. This will not give a useful result.
67	<	}
68	<	{$define UseCaseSensitiveParamName}
69	<	{$endif}
38	>	{$codepage UTF8}
39
40		interface
41
#	Line 76 | Line 45 | uses
45		{$ELSE}
46		baseunix, unix,
47		{$ENDIF}
48	<	SysUtils, Classes, IBHeader,
80	<	IBErrorCodes, IBExternals, DB, IB, IBDatabase, IBUtils, IBXConst;
81	<
82	<	const
83	<	sSQLErrorSeparator = ' When Executing: ';
48	>	SysUtils, Classes, IBExternals, IB, IBDatabase, IBUtils;
49
50		type
86	–	TIBSQL = class;
87	–	TIBXSQLDA = class;
88	–
89	–	{ TIBXSQLVAR }
90	–	TIBXSQLVAR = class(TObject)
91	–	private
92	–	FParent: TIBXSQLDA;
93	–	FSQL: TIBSQL;
94	–	FIndex: Integer;
95	–	FModified: Boolean;
96	–	FName: String;
97	–	FUniqueName: boolean;
98	–	FXSQLVAR: PXSQLVAR;       { Point to the PXSQLVAR in the owner object }
99	–
100	–	function AdjustScale(Value: Int64; Scale: Integer): Double;
101	–	function AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
102	–	function AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
103	–	function GetAsBoolean: boolean;
104	–	function GetAsCurrency: Currency;
105	–	function GetAsInt64: Int64;
106	–	function GetAsDateTime: TDateTime;
107	–	function GetAsDouble: Double;
108	–	function GetAsFloat: Float;
109	–	function GetAsLong: Long;
110	–	function GetAsPointer: Pointer;
111	–	function GetAsQuad: TISC_QUAD;
112	–	function GetAsShort: Short;
113	–	function GetAsString: String;
114	–	function GetAsVariant: Variant;
115	–	function GetAsXSQLVAR: PXSQLVAR;
116	–	function GetIsNull: Boolean;
117	–	function GetIsNullable: Boolean;
118	–	function GetSize: Integer;
119	–	function GetSQLType: Integer;
120	–	procedure SetAsBoolean(AValue: boolean);
121	–	procedure SetAsCurrency(Value: Currency);
122	–	procedure SetAsInt64(Value: Int64);
123	–	procedure SetAsDate(Value: TDateTime);
124	–	procedure SetAsLong(Value: Long);
125	–	procedure SetAsTime(Value: TDateTime);
126	–	procedure SetAsDateTime(Value: TDateTime);
127	–	procedure SetAsDouble(Value: Double);
128	–	procedure SetAsFloat(Value: Float);
129	–	procedure SetAsPointer(Value: Pointer);
130	–	procedure SetAsQuad(Value: TISC_QUAD);
131	–	procedure SetAsShort(Value: Short);
132	–	procedure SetAsString(Value: String);
133	–	procedure SetAsVariant(Value: Variant);
134	–	procedure SetAsXSQLVAR(Value: PXSQLVAR);
135	–	procedure SetIsNull(Value: Boolean);
136	–	procedure SetIsNullable(Value: Boolean);
137	–	procedure xSetAsBoolean(AValue: boolean);
138	–	procedure xSetAsCurrency(Value: Currency);
139	–	procedure xSetAsInt64(Value: Int64);
140	–	procedure xSetAsDate(Value: TDateTime);
141	–	procedure xSetAsTime(Value: TDateTime);
142	–	procedure xSetAsDateTime(Value: TDateTime);
143	–	procedure xSetAsDouble(Value: Double);
144	–	procedure xSetAsFloat(Value: Float);
145	–	procedure xSetAsLong(Value: Long);
146	–	procedure xSetAsPointer(Value: Pointer);
147	–	procedure xSetAsQuad(Value: TISC_QUAD);
148	–	procedure xSetAsShort(Value: Short);
149	–	procedure xSetAsString(Value: String);
150	–	procedure xSetAsVariant(Value: Variant);
151	–	procedure xSetAsXSQLVAR(Value: PXSQLVAR);
152	–	procedure xSetIsNull(Value: Boolean);
153	–	procedure xSetIsNullable(Value: Boolean);
154	–	public
155	–	constructor Create(Parent: TIBXSQLDA; Query: TIBSQL);
156	–	procedure Assign(Source: TIBXSQLVAR);
157	–	procedure Clear;
158	–	procedure LoadFromFile(const FileName: String);
159	–	procedure LoadFromStream(Stream: TStream);
160	–	procedure SaveToFile(const FileName: String);
161	–	procedure SaveToStream(Stream: TStream);
162	–	property AsDate: TDateTime read GetAsDateTime write SetAsDate;
163	–	property AsBoolean:boolean read GetAsBoolean write SetAsBoolean;
164	–	property AsTime: TDateTime read GetAsDateTime write SetAsTime;
165	–	property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
166	–	property AsDouble: Double read GetAsDouble write SetAsDouble;
167	–	property AsFloat: Float read GetAsFloat write SetAsFloat;
168	–	property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
169	–	property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
170	–	property AsInteger: Integer read GetAsLong write SetAsLong;
171	–	property AsLong: Long read GetAsLong write SetAsLong;
172	–	property AsPointer: Pointer read GetAsPointer write SetAsPointer;
173	–	property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
174	–	property AsShort: Short read GetAsShort write SetAsShort;
175	–	property AsString: String read GetAsString write SetAsString;
176	–	property AsVariant: Variant read GetAsVariant write SetAsVariant;
177	–	property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
178	–	property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
179	–	property IsNull: Boolean read GetIsNull write SetIsNull;
180	–	property IsNullable: Boolean read GetIsNullable write SetIsNullable;
181	–	property Index: Integer read FIndex;
182	–	property Modified: Boolean read FModified write FModified;
183	–	property Name: String read FName;
184	–	property Size: Integer read GetSize;
185	–	property SQLType: Integer read GetSQLType;
186	–	property Value: Variant read GetAsVariant write SetAsVariant;
187	–	end;
188	–
189	–	TIBXSQLVARArray = Array of TIBXSQLVAR;
190	–
191	–	TIBXSQLDAType = (daInput,daOutput);
192	–
193	–	{ TIBXSQLDA }
194	–
195	–	TIBXSQLDA = class(TObject)
196	–	protected
197	–	FSQL: TIBSQL;
198	–	FCount: Integer;
199	–	FSize: Integer;
200	–	FInputSQLDA: boolean;
201	–	FXSQLDA: PXSQLDA;
202	–	FXSQLVARs: TIBXSQLVARArray; { array of IBXQLVARs }
203	–	FUniqueRelationName: String;
204	–	function GetModified: Boolean;
205	–	function GetRecordSize: Integer;
206	–	function GetXSQLDA: PXSQLDA;
207	–	function GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
208	–	function GetXSQLVARByName(Idx: String): TIBXSQLVAR;
209	–	procedure Initialize;
210	–	procedure SetCount(Value: Integer);
211	–	public
212	–	constructor Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
213	–	destructor Destroy; override;
214	–	procedure SetParamName(FieldName: String; Idx: Integer; UniqueName: boolean = false);
215	–	function ByName(Idx: String): TIBXSQLVAR;
216	–	property AsXSQLDA: PXSQLDA read GetXSQLDA;
217	–	property Count: Integer read FCount write SetCount;
218	–	property Modified: Boolean read GetModified;
219	–	property RecordSize: Integer read GetRecordSize;
220	–	property Vars[Idx: Integer]: TIBXSQLVAR read GetXSQLVAR; default;
221	–	property UniqueRelationName: String read FUniqueRelationName;
222	–	end;
223	–
51		{ TIBBatch }
52
53		TIBBatch = class(TObject)
54		protected
55		FFilename: String;
56	<	FColumns: TIBXSQLDA;
57	<	FParams: TIBXSQLDA;
56	>	FColumns: IResults;
57	>	FParams: ISQLParams;
58		public
59		procedure ReadyFile; virtual; abstract;
60	<	property Columns: TIBXSQLDA read FColumns;
60	>	property Columns: IResults read FColumns;
61		property Filename: String read FFilename write FFilename;
62	<	property Params: TIBXSQLDA read FParams;
62	>	property Params: ISQLParams read FParams;
63		end;
64
65		TIBBatchInput = class(TIBBatch)
#	Line 318 | Line 145 | type
145		end;
146
147		{ TIBSQL }
321	–	TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
322	–	SQLUpdate, SQLDelete, SQLDDL,
323	–	SQLGetSegment, SQLPutSegment,
324	–	SQLExecProcedure, SQLStartTransaction,
325	–	SQLCommit, SQLRollback,
326	–	SQLSelectForUpdate, SQLSetGenerator);
148
149		TIBSQL = class(TComponent)
150		private
151	<	FIBLoaded: Boolean;
151	>	FMetaData: IMetaData;
152	>	FSQLParams: ISQLParams;
153	>	FStatement: IStatement;
154		FOnSQLChanged: TNotifyEvent;
155		FUniqueParamNames: Boolean;
156	+	FBOF: boolean;
157	+	FEOF: boolean;
158		function GetFieldCount: integer;
159	+	function GetOpen: Boolean;
160	+	function GetPrepared: Boolean;
161	+	function GetSQLStatementType: TIBSQLStatementTypes;
162		procedure SetUniqueParamNames(AValue: Boolean);
163		protected
164		FBase: TIBBase;
165	<	FBOF,                          { At BOF? }
338	<	FEOF,                          { At EOF? }
339	<	FGoToFirstRecordOnExecute,     { Automatically position record on first record after executing }
340	<	FOpen,                         { Is a cursor open? }
341	<	FPrepared: Boolean;            { Has the query been prepared? }
165	>	FGoToFirstRecordOnExecute: boolean;     { Automatically position record on first record after executing }
166		FRecordCount: Integer;         { How many records have been read so far? }
343	–	FCursor: String;               { Cursor name...}
344	–	FHandle: TISC_STMT_HANDLE;     { Once prepared, this accesses the SQL Query }
167		FOnSQLChanging: TNotifyEvent;  { Call this when the SQL is changing }
168		FSQL: TStrings;                { SQL Query (by user) }
169		FParamCheck: Boolean;          { Check for parameters? (just like TQuery) }
170	<	FProcessedSQL: TStrings;       { SQL Query (pre-processed for param labels) }
171	<	FSQLParams,                    { Any parameters to the query }
350	<	FSQLRecord: TIBXSQLDA;         { The current record }
351	<	FSQLType: TIBSQLTypes;         { Select, update, delete, insert, create, alter, etc...}
170	>	FResults: IResults;            {Single row results from exec}
171	>	FResultSet: IResultSet;        {Multi-row results from open cursor}
172		FGenerateParamNames: Boolean;  { Auto generate param names ?}
173		procedure DoBeforeDatabaseDisconnect(Sender: TObject);
174		function GetDatabase: TIBDatabase;
355	–	function GetDBHandle: PISC_DB_HANDLE;
175		function GetEOF: Boolean;
176	<	function GetFields(const Idx: Integer): TIBXSQLVAR;
176	>	function GetFields(const Idx: Integer): ISQLData;
177		function GetFieldIndex(FieldName: String): Integer;
178		function GetPlan: String;
179		function GetRecordCount: Integer;
180		function GetRowsAffected: Integer;
181	<	function GetSQLParams: TIBXSQLDA;
181	>	function GetSQLParams: ISQLParams;
182		function GetTransaction: TIBTransaction;
364	–	function GetTRHandle: PISC_TR_HANDLE;
365	–	procedure PreprocessSQL;
183		procedure SetDatabase(Value: TIBDatabase);
184		procedure SetSQL(Value: TStrings);
185		procedure SetTransaction(Value: TIBTransaction);
#	Line 374 | Line 191 | type
191		destructor Destroy; override;
192		procedure BatchInput(InputObject: TIBBatchInput);
193		procedure BatchOutput(OutputObject: TIBBatchOutput);
377	–	function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
194		procedure CheckClosed;           { raise error if query is not closed. }
195		procedure CheckOpen;             { raise error if query is not open.}
196		procedure CheckValidStatement;   { raise error if statement is invalid.}
197		procedure Close;
382	–	function Current: TIBXSQLDA;
198		procedure ExecQuery;
199	<	function FieldByName(FieldName: String): TIBXSQLVAR;
200	<	function ParamByName(ParamName: String): TIBXSQLVAR;
199	>	function HasField(FieldName: String): boolean;
200	>	function FieldByName(FieldName: String): ISQLData;
201	>	function ParamByName(ParamName: String): ISQLParam;
202		procedure FreeHandle;
203	<	function Next: TIBXSQLDA;
203	>	function Next: boolean;
204		procedure Prepare;
205		function GetUniqueRelationName: String;
206		property Bof: Boolean read FBOF;
391	–	property DBHandle: PISC_DB_HANDLE read GetDBHandle;
207		property Eof: Boolean read GetEOF;
208	<	property Fields[const Idx: Integer]: TIBXSQLVAR read GetFields;
208	>	property Current: IResults read FResults;
209	>	property Fields[const Idx: Integer]: ISQLData read GetFields; default;
210		property FieldIndex[FieldName: String]: Integer read GetFieldIndex;
211		property FieldCount: integer read GetFieldCount;
212	<	property Open: Boolean read FOpen;
213	<	property Params: TIBXSQLDA read GetSQLParams;
212	>	property Open: Boolean read GetOpen;
213	>	property Params: ISQLParams read GetSQLParams;
214		property Plan: String read GetPlan;
215	<	property Prepared: Boolean read FPrepared;
215	>	property Prepared: Boolean read GetPrepared;
216		property RecordCount: Integer read GetRecordCount;
217		property RowsAffected: Integer read GetRowsAffected;
218	<	property SQLType: TIBSQLTypes read FSQLType;
403	<	property TRHandle: PISC_TR_HANDLE read GetTRHandle;
404	<	property Handle: TISC_STMT_HANDLE read FHandle;
218	>	property SQLStatementType: TIBSQLStatementTypes read GetSQLStatementType;
219		property UniqueRelationName: String read GetUniqueRelationName;
220	+	property Statement: IStatement read FStatement;
221	+	property MetaData: IMetaData read FMetaData;
222		published
223		property Database: TIBDatabase read GetDatabase write SetDatabase;
224		property GenerateParamNames: Boolean read FGenerateParamNames write FGenerateParamNames;
#	Line 417 | Line 233 | type
233		property OnSQLChanged: TNotifyEvent read FOnSQLChanged write FOnSQLChanged;
234		end;
235
236	+	procedure IBAlloc(var P; OldSize, NewSize: Integer);
237	+
238		implementation
239
240		uses
241	<	IBIntf, IBBlob, Variants , IBSQLMonitor;
424	<
425	<	{ TIBXSQLVAR }
426	<	constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
427	<	begin
428	<	inherited Create;
429	<	FParent := Parent;
430	<	FSQL := Query;
431	<	end;
432	<
433	<	procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
434	<	var
435	<	szBuff: PChar;
436	<	s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
437	<	bSourceBlob, bDestBlob: Boolean;
438	<	iSegs: Int64;
439	<	iMaxSeg: Int64;
440	<	iSize: Int64;
441	<	iBlobType: Short;
442	<	begin
443	<	szBuff := nil;
444	<	bSourceBlob := True;
445	<	bDestBlob := True;
446	<	s_bhandle := nil;
447	<	d_bhandle := nil;
448	<	try
449	<	if (Source.IsNull) then
450	<	begin
451	<	IsNull := True;
452	<	exit;
453	<	end
454	<	else
455	<	if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
456	<	(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
457	<	exit; { arrays not supported }
458	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
459	<	(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
460	<	begin
461	<	AsXSQLVAR := Source.AsXSQLVAR;
462	<	exit;
463	<	end
464	<	else
465	<	if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
466	<	begin
467	<	szBuff := nil;
468	<	IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
469	<	Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
470	<	bSourceBlob := False;
471	<	iSize := Source.FXSQLVAR^.sqllen;
472	<	end
473	<	else
474	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
475	<	bDestBlob := False;
476	<
477	<	if bSourceBlob then
478	<	begin
479	<	{ read the blob }
480	<	Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
481	<	Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
482	<	0, nil), True);
483	<	try
484	<	IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
485	<	iBlobType);
486	<	szBuff := nil;
487	<	IBAlloc(szBuff, 0, iSize);
488	<	IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
489	<	finally
490	<	Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
491	<	end;
492	<	end;
493	<
494	<	if bDestBlob then
495	<	begin
496	<	{ write the blob }
497	<	FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
498	<	FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
499	<	0, nil), True);
500	<	try
501	<	IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
502	<	isNull := false
503	<	finally
504	<	FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
505	<	end;
506	<	end
507	<	else
508	<	begin
509	<	{ just copy the buffer }
510	<	FXSQLVAR.sqltype := SQL_TEXT;
511	<	FXSQLVAR.sqllen := iSize;
512	<	IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
513	<	Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
514	<	end;
515	<	finally
516	<	FreeMem(szBuff);
517	<	end;
518	<	end;
519	<
520	<	function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
521	<	var
522	<	Scaling : Int64;
523	<	i: Integer;
524	<	Val: Double;
525	<	begin
526	<	Scaling := 1; Val := Value;
527	<	if Scale > 0 then
528	<	begin
529	<	for i := 1 to Scale do
530	<	Scaling := Scaling * 10;
531	<	result := Val * Scaling;
532	<	end
533	<	else
534	<	if Scale < 0 then
535	<	begin
536	<	for i := -1 downto Scale do
537	<	Scaling := Scaling * 10;
538	<	result := Val / Scaling;
539	<	end
540	<	else
541	<	result := Val;
542	<	end;
543	<
544	<	function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
545	<	var
546	<	Scaling : Int64;
547	<	i: Integer;
548	<	Val: Int64;
549	<	begin
550	<	Scaling := 1; Val := Value;
551	<	if Scale > 0 then begin
552	<	for i := 1 to Scale do Scaling := Scaling * 10;
553	<	result := Val * Scaling;
554	<	end else if Scale < 0 then begin
555	<	for i := -1 downto Scale do Scaling := Scaling * 10;
556	<	result := Val div Scaling;
557	<	end else
558	<	result := Val;
559	<	end;
560	<
561	<	function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
562	<	var
563	<	Scaling : Int64;
564	<	i : Integer;
565	<	FractionText, PadText, CurrText: string;
566	<	begin
567	<	Result := 0;
568	<	Scaling := 1;
569	<	if Scale > 0 then
570	<	begin
571	<	for i := 1 to Scale do
572	<	Scaling := Scaling * 10;
573	<	result := Value * Scaling;
574	<	end
575	<	else
576	<	if Scale < 0 then
577	<	begin
578	<	for i := -1 downto Scale do
579	<	Scaling := Scaling * 10;
580	<	FractionText := IntToStr(abs(Value mod Scaling));
581	<	for i := Length(FractionText) to -Scale -1 do
582	<	PadText := '0' + PadText;
583	<	if Value < 0 then
584	<	CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
585	<	else
586	<	CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
587	<	try
588	<	result := StrToCurr(CurrText);
589	<	except
590	<	on E: Exception do
591	<	IBError(ibxeInvalidDataConversion, [nil]);
592	<	end;
593	<	end
594	<	else
595	<	result := Value;
596	<	end;
597	<
598	<	function TIBXSQLVAR.GetAsBoolean: boolean;
599	<	begin
600	<	result := false;
601	<	if not IsNull then
602	<	begin
603	<	if FXSQLVAR^.sqltype and (not 1) = SQL_BOOLEAN then
604	<	result := PByte(FXSQLVAR^.sqldata)^ = ISC_TRUE
605	<	else
606	<	IBError(ibxeInvalidDataConversion, [nil]);
607	<	end
608	<	end;
609	<
610	<	function TIBXSQLVAR.GetAsCurrency: Currency;
611	<	begin
612	<	result := 0;
613	<	if FSQL.Database.SQLDialect < 3 then
614	<	result := GetAsDouble
615	<	else begin
616	<	if not IsNull then
617	<	case FXSQLVAR^.sqltype and (not 1) of
618	<	SQL_TEXT, SQL_VARYING: begin
619	<	try
620	<	result := StrtoCurr(AsString);
621	<	except
622	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
623	<	end;
624	<	end;
625	<	SQL_SHORT:
626	<	result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
627	<	FXSQLVAR^.sqlscale);
628	<	SQL_LONG:
629	<	result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
630	<	FXSQLVAR^.sqlscale);
631	<	SQL_INT64:
632	<	result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
633	<	FXSQLVAR^.sqlscale);
634	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
635	<	result := Trunc(AsDouble);
636	<	else
637	<	IBError(ibxeInvalidDataConversion, [nil]);
638	<	end;
639	<	end;
640	<	end;
641	<
642	<	function TIBXSQLVAR.GetAsInt64: Int64;
643	<	begin
644	<	result := 0;
645	<	if not IsNull then
646	<	case FXSQLVAR^.sqltype and (not 1) of
647	<	SQL_TEXT, SQL_VARYING: begin
648	<	try
649	<	result := StrToInt64(AsString);
650	<	except
651	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
652	<	end;
653	<	end;
654	<	SQL_SHORT:
655	<	result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
656	<	FXSQLVAR^.sqlscale);
657	<	SQL_LONG:
658	<	result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
659	<	FXSQLVAR^.sqlscale);
660	<	SQL_INT64:
661	<	result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
662	<	FXSQLVAR^.sqlscale);
663	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
664	<	result := Trunc(AsDouble);
665	<	else
666	<	IBError(ibxeInvalidDataConversion, [nil]);
667	<	end;
668	<	end;
669	<
670	<	function TIBXSQLVAR.GetAsDateTime: TDateTime;
671	<	var
672	<	tm_date: TCTimeStructure;
673	<	msecs: word;
674	<	begin
675	<	result := 0;
676	<	if not IsNull then
677	<	case FXSQLVAR^.sqltype and (not 1) of
678	<	SQL_TEXT, SQL_VARYING: begin
679	<	try
680	<	result := StrToDate(AsString);
681	<	except
682	<	on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
683	<	end;
684	<	end;
685	<	SQL_TYPE_DATE: begin
686	<	isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
687	<	try
688	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
689	<	Word(tm_date.tm_mday));
690	<	except
691	<	on E: EConvertError do begin
692	<	IBError(ibxeInvalidDataConversion, [nil]);
693	<	end;
694	<	end;
695	<	end;
696	<	SQL_TYPE_TIME: begin
697	<	isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
698	<	try
699	<	msecs :=  (PISC_TIME(FXSQLVAR^.sqldata)^ mod 10000) div 10;
700	<	result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
701	<	Word(tm_date.tm_sec), msecs)
702	<	except
703	<	on E: EConvertError do begin
704	<	IBError(ibxeInvalidDataConversion, [nil]);
705	<	end;
706	<	end;
707	<	end;
708	<	SQL_TIMESTAMP: begin
709	<	isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
710	<	try
711	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
712	<	Word(tm_date.tm_mday));
713	<	msecs := (PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time mod 10000) div 10;
714	<	if result >= 0 then
715	<	result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
716	<	Word(tm_date.tm_sec), msecs)
717	<	else
718	<	result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
719	<	Word(tm_date.tm_sec), msecs)
720	<	except
721	<	on E: EConvertError do begin
722	<	IBError(ibxeInvalidDataConversion, [nil]);
723	<	end;
724	<	end;
725	<	end;
726	<	else
727	<	IBError(ibxeInvalidDataConversion, [nil]);
728	<	end;
729	<	end;
730	<
731	<	function TIBXSQLVAR.GetAsDouble: Double;
732	<	begin
733	<	result := 0;
734	<	if not IsNull then begin
735	<	case FXSQLVAR^.sqltype and (not 1) of
736	<	SQL_TEXT, SQL_VARYING: begin
737	<	try
738	<	result := StrToFloat(AsString);
739	<	except
740	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
741	<	end;
742	<	end;
743	<	SQL_SHORT:
744	<	result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
745	<	FXSQLVAR^.sqlscale);
746	<	SQL_LONG:
747	<	result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
748	<	FXSQLVAR^.sqlscale);
749	<	SQL_INT64:
750	<	result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
751	<	SQL_FLOAT:
752	<	result := PFloat(FXSQLVAR^.sqldata)^;
753	<	SQL_DOUBLE, SQL_D_FLOAT:
754	<	result := PDouble(FXSQLVAR^.sqldata)^;
755	<	else
756	<	IBError(ibxeInvalidDataConversion, [nil]);
757	<	end;
758	<	if  FXSQLVAR^.sqlscale <> 0 then
759	<	result :=
760	<	StrToFloat(FloatToStrF(result, fffixed, 15,
761	<	Abs(FXSQLVAR^.sqlscale) ));
762	<	end;
763	<	end;
764	<
765	<	function TIBXSQLVAR.GetAsFloat: Float;
766	<	begin
767	<	result := 0;
768	<	try
769	<	result := AsDouble;
770	<	except
771	<	on E: EOverflow do
772	<	IBError(ibxeInvalidDataConversion, [nil]);
773	<	end;
774	<	end;
775	<
776	<	function TIBXSQLVAR.GetAsLong: Long;
777	<	begin
778	<	result := 0;
779	<	if not IsNull then
780	<	case FXSQLVAR^.sqltype and (not 1) of
781	<	SQL_TEXT, SQL_VARYING: begin
782	<	try
783	<	result := StrToInt(AsString);
784	<	except
785	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
786	<	end;
787	<	end;
788	<	SQL_SHORT:
789	<	result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
790	<	FXSQLVAR^.sqlscale));
791	<	SQL_LONG:
792	<	result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
793	<	FXSQLVAR^.sqlscale));
794	<	SQL_INT64:
795	<	result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
796	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
797	<	result := Trunc(AsDouble);
798	<	else
799	<	IBError(ibxeInvalidDataConversion, [nil]);
800	<	end;
801	<	end;
802	<
803	<	function TIBXSQLVAR.GetAsPointer: Pointer;
804	<	begin
805	<	if not IsNull then
806	<	result := FXSQLVAR^.sqldata
807	<	else
808	<	result := nil;
809	<	end;
810	<
811	<	function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
812	<	begin
813	<	result.gds_quad_high := 0;
814	<	result.gds_quad_low := 0;
815	<	if not IsNull then
816	<	case FXSQLVAR^.sqltype and (not 1) of
817	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD:
818	<	result := PISC_QUAD(FXSQLVAR^.sqldata)^;
819	<	else
820	<	IBError(ibxeInvalidDataConversion, [nil]);
821	<	end;
822	<	end;
823	<
824	<	function TIBXSQLVAR.GetAsShort: Short;
825	<	begin
826	<	result := 0;
827	<	try
828	<	result := AsLong;
829	<	except
830	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
831	<	end;
832	<	end;
833	<
834	<
835	<	function TIBXSQLVAR.GetAsString: String;
836	<	var
837	<	sz: PChar;
838	<	str_len: Integer;
839	<	ss: TStringStream;
840	<	begin
841	<	result := '';
842	<	{ Check null, if so return a default string }
843	<	if not IsNull then
844	<	case FXSQLVar^.sqltype and (not 1) of
845	<	SQL_ARRAY:
846	<	result := '(Array)'; {do not localize}
847	<	SQL_BLOB: begin
848	<	ss := TStringStream.Create('');
849	<	try
850	<	SaveToStream(ss);
851	<	result := ss.DataString;
852	<	finally
853	<	ss.Free;
854	<	end;
855	<	end;
856	<	SQL_TEXT, SQL_VARYING: begin
857	<	sz := FXSQLVAR^.sqldata;
858	<	if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
859	<	str_len := FXSQLVar^.sqllen
860	<	else begin
861	<	str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
862	<	Inc(sz, 2);
863	<	end;
864	<	SetString(result, sz, str_len);
865	<	if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
866	<	result := TrimRight(result);
867	<	end;
868	<	SQL_TYPE_DATE:
869	<	case FSQL.Database.SQLDialect of
870	<	1 : result := DateTimeToStr(AsDateTime);
871	<	3 : result := DateToStr(AsDateTime);
872	<	end;
873	<	SQL_TYPE_TIME :
874	<	result := TimeToStr(AsDateTime);
875	<	SQL_TIMESTAMP:
876	<	result := DateTimeToStr(AsDateTime);
877	<	SQL_SHORT, SQL_LONG:
878	<	if FXSQLVAR^.sqlscale = 0 then
879	<	result := IntToStr(AsLong)
880	<	else if FXSQLVAR^.sqlscale >= (-4) then
881	<	result := CurrToStr(AsCurrency)
882	<	else
883	<	result := FloatToStr(AsDouble);
884	<	SQL_INT64:
885	<	if FXSQLVAR^.sqlscale = 0 then
886	<	result := IntToStr(AsInt64)
887	<	else if FXSQLVAR^.sqlscale >= (-4) then
888	<	result := CurrToStr(AsCurrency)
889	<	else
890	<	result := FloatToStr(AsDouble);
891	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
892	<	result := FloatToStr(AsDouble);
893	<	else
894	<	IBError(ibxeInvalidDataConversion, [nil]);
895	<	end;
896	<	end;
897	<
898	<	function TIBXSQLVAR.GetAsVariant: Variant;
899	<	begin
900	<	if IsNull then
901	<	result := NULL
902	<	{ Check null, if so return a default string }
903	<	else case FXSQLVar^.sqltype and (not 1) of
904	<	SQL_ARRAY:
905	<	result := '(Array)'; {do not localize}
906	<	SQL_BLOB:
907	<	result := '(Blob)'; {do not localize}
908	<	SQL_TEXT, SQL_VARYING:
909	<	result := AsString;
910	<	SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
911	<	result := AsDateTime;
912	<	SQL_SHORT, SQL_LONG:
913	<	if FXSQLVAR^.sqlscale = 0 then
914	<	result := AsLong
915	<	else if FXSQLVAR^.sqlscale >= (-4) then
916	<	result := AsCurrency
917	<	else
918	<	result := AsDouble;
919	<	SQL_INT64:
920	<	if FXSQLVAR^.sqlscale = 0 then
921	<	result := AsInt64
922	<	else if FXSQLVAR^.sqlscale >= (-4) then
923	<	result := AsCurrency
924	<	else
925	<	result := AsDouble;
926	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
927	<	result := AsDouble;
928	<	SQL_BOOLEAN:
929	<	result := AsBoolean;
930	<	else
931	<	IBError(ibxeInvalidDataConversion, [nil]);
932	<	end;
933	<	end;
934	<
935	<	function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
936	<	begin
937	<	result := FXSQLVAR;
938	<	end;
939	<
940	<	function TIBXSQLVAR.GetIsNull: Boolean;
941	<	begin
942	<	result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
943	<	end;
944	<
945	<	function TIBXSQLVAR.GetIsNullable: Boolean;
946	<	begin
947	<	result := (FXSQLVAR^.sqltype and 1 = 1);
948	<	end;
949	<
950	<	procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
951	<	var
952	<	fs: TFileStream;
953	<	begin
954	<	fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
955	<	try
956	<	LoadFromStream(fs);
957	<	finally
958	<	fs.Free;
959	<	end;
960	<	end;
961	<
962	<	procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
963	<	var
964	<	bs: TIBBlobStream;
965	<	begin
966	<	bs := TIBBlobStream.Create;
967	<	try
968	<	bs.Mode := bmWrite;
969	<	bs.Database := FSQL.Database;
970	<	bs.Transaction := FSQL.Transaction;
971	<	Stream.Seek(0, soFromBeginning);
972	<	bs.LoadFromStream(Stream);
973	<	bs.Finalize;
974	<	AsQuad := bs.BlobID;
975	<	finally
976	<	bs.Free;
977	<	end;
978	<	end;
979	<
980	<	procedure TIBXSQLVAR.SaveToFile(const FileName: String);
981	<	var
982	<	fs: TFileStream;
983	<	begin
984	<	fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
985	<	try
986	<	SaveToStream(fs);
987	<	finally
988	<	fs.Free;
989	<	end;
990	<	end;
991	<
992	<	procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
993	<	var
994	<	bs: TIBBlobStream;
995	<	begin
996	<	bs := TIBBlobStream.Create;
997	<	try
998	<	bs.Mode := bmRead;
999	<	bs.Database := FSQL.Database;
1000	<	bs.Transaction := FSQL.Transaction;
1001	<	bs.BlobID := AsQuad;
1002	<	bs.SaveToStream(Stream);
1003	<	finally
1004	<	bs.Free;
1005	<	end;
1006	<	end;
1007	<
1008	<	function TIBXSQLVAR.GetSize: Integer;
1009	<	begin
1010	<	result := FXSQLVAR^.sqllen;
1011	<	end;
1012	<
1013	<	function TIBXSQLVAR.GetSQLType: Integer;
1014	<	begin
1015	<	result := FXSQLVAR^.sqltype and (not 1);
1016	<	end;
1017	<
1018	<	procedure TIBXSQLVAR.SetAsBoolean(AValue: boolean);
1019	<	var
1020	<	i: Integer;
1021	<	begin
1022	<	if FUniqueName then
1023	<	xSetAsBoolean(AValue)
1024	<	else
1025	<	for i := 0 to FParent.FCount - 1 do
1026	<	if FParent[i].FName = FName then
1027	<	FParent[i].xSetAsBoolean(AValue);
1028	<	end;
1029	<
1030	<	procedure TIBXSQLVAR.xSetAsCurrency(Value: Currency);
1031	<	begin
1032	<	if IsNullable then
1033	<	IsNull := False;
1034	<	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1035	<	FXSQLVAR^.sqlscale := -4;
1036	<	FXSQLVAR^.sqllen := SizeOf(Int64);
1037	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1038	<	PCurrency(FXSQLVAR^.sqldata)^ := Value;
1039	<	FModified := True;
1040	<	end;
1041	<
1042	<	procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
1043	<	var
1044	<	i: Integer;
1045	<	begin
1046	<	if FSQL.Database.SQLDialect < 3 then
1047	<	AsDouble := Value
1048	<	else
1049	<	begin
1050	<
1051	<	if FUniqueName then
1052	<	xSetAsCurrency(Value)
1053	<	else
1054	<	for i := 0 to FParent.FCount - 1 do
1055	<	if FParent[i].FName = FName then
1056	<	FParent[i].xSetAsCurrency(Value);
1057	<	end;
1058	<	end;
1059	<
1060	<	procedure TIBXSQLVAR.xSetAsInt64(Value: Int64);
1061	<	begin
1062	<	if IsNullable then
1063	<	IsNull := False;
1064	<
1065	<	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1066	<	FXSQLVAR^.sqlscale := 0;
1067	<	FXSQLVAR^.sqllen := SizeOf(Int64);
1068	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1069	<	PInt64(FXSQLVAR^.sqldata)^ := Value;
1070	<	FModified := True;
1071	<	end;
1072	<
1073	<	procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
1074	<	var
1075	<	i: Integer;
1076	<	begin
1077	<	if FUniqueName then
1078	<	xSetAsInt64(Value)
1079	<	else
1080	<	for i := 0 to FParent.FCount - 1 do
1081	<	if FParent[i].FName = FName then
1082	<	FParent[i].xSetAsInt64(Value);
1083	<	end;
1084	<
1085	<	procedure TIBXSQLVAR.xSetAsDate(Value: TDateTime);
1086	<	var
1087	<	tm_date: TCTimeStructure;
1088	<	Yr, Mn, Dy: Word;
1089	<	begin
1090	<	if IsNullable then
1091	<	IsNull := False;
1092	<
1093	<	FXSQLVAR^.sqltype := SQL_TYPE_DATE or (FXSQLVAR^.sqltype and 1);
1094	<	DecodeDate(Value, Yr, Mn, Dy);
1095	<	with tm_date do begin
1096	<	tm_sec := 0;
1097	<	tm_min := 0;
1098	<	tm_hour := 0;
1099	<	tm_mday := Dy;
1100	<	tm_mon := Mn - 1;
1101	<	tm_year := Yr - 1900;
1102	<	end;
1103	<	FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
1104	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1105	<	isc_encode_sql_date(@tm_date, PISC_DATE(FXSQLVAR^.sqldata));
1106	<	FModified := True;
1107	<	end;
1108	<
1109	<	procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
1110	<	var
1111	<	i: Integer;
1112	<	begin
1113	<	if FSQL.Database.SQLDialect < 3 then
1114	<	begin
1115	<	AsDateTime := Value;
1116	<	exit;
1117	<	end;
1118	<
1119	<	if FUniqueName then
1120	<	xSetAsDate(Value)
1121	<	else
1122	<	for i := 0 to FParent.FCount - 1 do
1123	<	if FParent[i].FName = FName then
1124	<	FParent[i].xSetAsDate(Value);
1125	<	end;
1126	<
1127	<	procedure TIBXSQLVAR.xSetAsTime(Value: TDateTime);
1128	<	var
1129	<	tm_date: TCTimeStructure;
1130	<	Hr, Mt, S, Ms: Word;
1131	<	begin
1132	<	if IsNullable then
1133	<	IsNull := False;
1134	<
1135	<	FXSQLVAR^.sqltype := SQL_TYPE_TIME or (FXSQLVAR^.sqltype and 1);
1136	<	DecodeTime(Value, Hr, Mt, S, Ms);
1137	<	with tm_date do begin
1138	<	tm_sec := S;
1139	<	tm_min := Mt;
1140	<	tm_hour := Hr;
1141	<	tm_mday := 0;
1142	<	tm_mon := 0;
1143	<	tm_year := 0;
1144	<	end;
1145	<	FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
1146	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1147	<	isc_encode_sql_time(@tm_date, PISC_TIME(FXSQLVAR^.sqldata));
1148	<	if Ms > 0 then
1149	<	Inc(PISC_TIME(FXSQLVAR^.sqldata)^,Ms*10);
1150	<	FModified := True;
1151	<	end;
1152	<
1153	<	procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
1154	<	var
1155	<	i: Integer;
1156	<	begin
1157	<	if FSQL.Database.SQLDialect < 3 then
1158	<	begin
1159	<	AsDateTime := Value;
1160	<	exit;
1161	<	end;
1162	<
1163	<	if FUniqueName then
1164	<	xSetAsTime(Value)
1165	<	else
1166	<	for i := 0 to FParent.FCount - 1 do
1167	<	if FParent[i].FName = FName then
1168	<	FParent[i].xSetAsTime(Value);
1169	<	end;
1170	<
1171	<	procedure TIBXSQLVAR.xSetAsDateTime(Value: TDateTime);
1172	<	var
1173	<	tm_date: TCTimeStructure;
1174	<	Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
1175	<	begin
1176	<	if IsNullable then
1177	<	IsNull := False;
1178	<
1179	<	FXSQLVAR^.sqltype := SQL_TIMESTAMP or (FXSQLVAR^.sqltype and 1);
1180	<	DecodeDate(Value, Yr, Mn, Dy);
1181	<	DecodeTime(Value, Hr, Mt, S, Ms);
1182	<	with tm_date do begin
1183	<	tm_sec := S;
1184	<	tm_min := Mt;
1185	<	tm_hour := Hr;
1186	<	tm_mday := Dy;
1187	<	tm_mon := Mn - 1;
1188	<	tm_year := Yr - 1900;
1189	<	end;
1190	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1191	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1192	<	isc_encode_date(@tm_date, PISC_QUAD(FXSQLVAR^.sqldata));
1193	<	if Ms > 0 then
1194	<	Inc(PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time,Ms*10);
1195	<	FModified := True;
1196	<	end;
1197	<
1198	<	procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
1199	<	var
1200	<	i: Integer;
1201	<	begin
1202	<	if FUniqueName then
1203	<	xSetAsDateTime(value)
1204	<	else
1205	<	for i := 0 to FParent.FCount - 1 do
1206	<	if FParent[i].FName = FName then
1207	<	FParent[i].xSetAsDateTime(Value);
1208	<	end;
1209	<
1210	<	procedure TIBXSQLVAR.xSetAsDouble(Value: Double);
1211	<	begin
1212	<	if IsNullable then
1213	<	IsNull := False;
1214	<
1215	<	FXSQLVAR^.sqltype := SQL_DOUBLE or (FXSQLVAR^.sqltype and 1);
1216	<	FXSQLVAR^.sqllen := SizeOf(Double);
1217	<	FXSQLVAR^.sqlscale := 0;
1218	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1219	<	PDouble(FXSQLVAR^.sqldata)^ := Value;
1220	<	FModified := True;
1221	<	end;
1222	<
1223	<	procedure TIBXSQLVAR.SetAsDouble(Value: Double);
1224	<	var
1225	<	i: Integer;
1226	<	begin
1227	<	if FUniqueName then
1228	<	xSetAsDouble(Value)
1229	<	else
1230	<	for i := 0 to FParent.FCount - 1 do
1231	<	if FParent[i].FName = FName then
1232	<	FParent[i].xSetAsDouble(Value);
1233	<	end;
1234	<
1235	<	procedure TIBXSQLVAR.xSetAsFloat(Value: Float);
1236	<	begin
1237	<	if IsNullable then
1238	<	IsNull := False;
1239	<
1240	<	FXSQLVAR^.sqltype := SQL_FLOAT or (FXSQLVAR^.sqltype and 1);
1241	<	FXSQLVAR^.sqllen := SizeOf(Float);
1242	<	FXSQLVAR^.sqlscale := 0;
1243	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1244	<	PSingle(FXSQLVAR^.sqldata)^ := Value;
1245	<	FModified := True;
1246	<	end;
1247	<
1248	<	procedure TIBXSQLVAR.SetAsFloat(Value: Float);
1249	<	var
1250	<	i: Integer;
1251	<	begin
1252	<	if FUniqueName then
1253	<	xSetAsFloat(Value)
1254	<	else
1255	<	for i := 0 to FParent.FCount - 1 do
1256	<	if FParent[i].FName = FName then
1257	<	FParent[i].xSetAsFloat(Value);
1258	<	end;
1259	<
1260	<	procedure TIBXSQLVAR.xSetAsLong(Value: Long);
1261	<	begin
1262	<	if IsNullable then
1263	<	IsNull := False;
1264	<
1265	<	FXSQLVAR^.sqltype := SQL_LONG or (FXSQLVAR^.sqltype and 1);
1266	<	FXSQLVAR^.sqllen := SizeOf(Long);
1267	<	FXSQLVAR^.sqlscale := 0;
1268	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1269	<	PLong(FXSQLVAR^.sqldata)^ := Value;
1270	<	FModified := True;
1271	<	end;
1272	<
1273	<	procedure TIBXSQLVAR.SetAsLong(Value: Long);
1274	<	var
1275	<	i: Integer;
1276	<	begin
1277	<	if FUniqueName then
1278	<	xSetAsLong(Value)
1279	<	else
1280	<	for i := 0 to FParent.FCount - 1 do
1281	<	if FParent[i].FName = FName then
1282	<	FParent[i].xSetAsLong(Value);
1283	<	end;
1284	<
1285	<	procedure TIBXSQLVAR.xSetAsPointer(Value: Pointer);
1286	<	begin
1287	<	if IsNullable and (Value = nil) then
1288	<	IsNull := True
1289	<	else begin
1290	<	IsNull := False;
1291	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1292	<	Move(Value^, FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1293	<	end;
1294	<	FModified := True;
1295	<	end;
1296	<
1297	<	procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
1298	<	var
1299	<	i: Integer;
1300	<	begin
1301	<	if FUniqueName then
1302	<	xSetAsPointer(Value)
1303	<	else
1304	<	for i := 0 to FParent.FCount - 1 do
1305	<	if FParent[i].FName = FName then
1306	<	FParent[i].xSetAsPointer(Value);
1307	<	end;
1308	<
1309	<	procedure TIBXSQLVAR.xSetAsQuad(Value: TISC_QUAD);
1310	<	begin
1311	<	if IsNullable then
1312	<	IsNull := False;
1313	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
1314	<	(FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
1315	<	IBError(ibxeInvalidDataConversion, [nil]);
1316	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1317	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1318	<	PISC_QUAD(FXSQLVAR^.sqldata)^ := Value;
1319	<	FModified := True;
1320	<	end;
1321	<
1322	<	procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
1323	<	var
1324	<	i: Integer;
1325	<	begin
1326	<	if FUniqueName then
1327	<	xSetAsQuad(Value)
1328	<	else
1329	<	for i := 0 to FParent.FCount - 1 do
1330	<	if FParent[i].FName = FName then
1331	<	FParent[i].xSetAsQuad(Value);
1332	<	end;
1333	<
1334	<	procedure TIBXSQLVAR.xSetAsShort(Value: Short);
1335	<	begin
1336	<	if IsNullable then
1337	<	IsNull := False;
1338	<
1339	<	FXSQLVAR^.sqltype := SQL_SHORT or (FXSQLVAR^.sqltype and 1);
1340	<	FXSQLVAR^.sqllen := SizeOf(Short);
1341	<	FXSQLVAR^.sqlscale := 0;
1342	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1343	<	PShort(FXSQLVAR^.sqldata)^ := Value;
1344	<	FModified := True;
1345	<	end;
1346	<
1347	<	procedure TIBXSQLVAR.SetAsShort(Value: Short);
1348	<	var
1349	<	i: Integer;
1350	<	begin
1351	<	if FUniqueName then
1352	<	xSetAsShort(Value)
1353	<	else
1354	<	for i := 0 to FParent.FCount - 1 do
1355	<	if FParent[i].FName = FName then
1356	<	FParent[i].xSetAsShort(Value);
1357	<	end;
1358	<
1359	<	procedure TIBXSQLVAR.xSetAsString(Value: String);
1360	<	var
1361	<	stype: Integer;
1362	<	ss: TStringStream;
1363	<
1364	<	procedure SetStringValue;
1365	<	var
1366	<	i: Integer;
1367	<	begin
1368	<	if (FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
1369	<	(FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
1370	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen)
1371	<	else begin
1372	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1373	<	FXSQLVAR^.sqllen := Length(Value);
1374	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen + 1);
1375	<	if (Length(Value) > 0) then
1376	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1377	<	end;
1378	<	FModified := True;
1379	<	end;
1380	<
1381	<	begin
1382	<	if IsNullable then
1383	<	IsNull := False;
1384	<
1385	<	stype := FXSQLVAR^.sqltype and (not 1);
1386	<	if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
1387	<	SetStringValue
1388	<	else begin
1389	<	if (stype = SQL_BLOB) then
1390	<	begin
1391	<	ss := TStringStream.Create(Value);
1392	<	try
1393	<	LoadFromStream(ss);
1394	<	finally
1395	<	ss.Free;
1396	<	end;
1397	<	end
1398	<	else if Value = '' then
1399	<	IsNull := True
1400	<	else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
1401	<	(stype = SQL_TYPE_TIME) then
1402	<	xSetAsDateTime(StrToDateTime(Value))
1403	<	else
1404	<	SetStringValue;
1405	<	end;
1406	<	end;
1407	<
1408	<	procedure TIBXSQLVAR.SetAsString(Value: String);
1409	<	var
1410	<	i: integer;
1411	<	begin
1412	<	if FUniqueName then
1413	<	xSetAsString(Value)
1414	<	else
1415	<	for i := 0 to FParent.FCount - 1 do
1416	<	if FParent[i].FName = FName then
1417	<	FParent[i].xSetAsString(Value);
1418	<	end;
1419	<
1420	<	procedure TIBXSQLVAR.xSetAsVariant(Value: Variant);
1421	<	begin
1422	<	if VarIsNull(Value) then
1423	<	IsNull := True
1424	<	else case VarType(Value) of
1425	<	varEmpty, varNull:
1426	<	IsNull := True;
1427	<	varSmallint, varInteger, varByte,
1428	<	varWord, varShortInt:
1429	<	AsLong := Value;
1430	<	varInt64:
1431	<	AsInt64 := Value;
1432	<	varSingle, varDouble:
1433	<	AsDouble := Value;
1434	<	varCurrency:
1435	<	AsCurrency := Value;
1436	<	varBoolean:
1437	<	AsBoolean := Value;
1438	<	varDate:
1439	<	AsDateTime := Value;
1440	<	varOleStr, varString:
1441	<	AsString := Value;
1442	<	varArray:
1443	<	IBError(ibxeNotSupported, [nil]);
1444	<	varByRef, varDispatch, varError, varUnknown, varVariant:
1445	<	IBError(ibxeNotPermitted, [nil]);
1446	<	end;
1447	<	end;
1448	<
1449	<	procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
1450	<	var
1451	<	i: integer;
1452	<	begin
1453	<	if FUniqueName then
1454	<	xSetAsVariant(Value)
1455	<	else
1456	<	for i := 0 to FParent.FCount - 1 do
1457	<	if FParent[i].FName = FName then
1458	<	FParent[i].xSetAsVariant(Value);
1459	<	end;
241	>	Variants, IBSQLMonitor, FBMessages, IBCustomDataSet;
242
243	<	procedure TIBXSQLVAR.xSetAsXSQLVAR(Value: PXSQLVAR);
1462	<	var
1463	<	sqlind: PShort;
1464	<	sqldata: PChar;
1465	<	local_sqllen: Integer;
1466	<	begin
1467	<	sqlind := FXSQLVAR^.sqlind;
1468	<	sqldata := FXSQLVAR^.sqldata;
1469	<	Move(Value^, FXSQLVAR^, SizeOf(TXSQLVAR));
1470	<	FXSQLVAR^.sqlind := sqlind;
1471	<	FXSQLVAR^.sqldata := sqldata;
1472	<	if (Value^.sqltype and 1 = 1) then
1473	<	begin
1474	<	if (FXSQLVAR^.sqlind = nil) then
1475	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1476	<	FXSQLVAR^.sqlind^ := Value^.sqlind^;
1477	<	end
1478	<	else
1479	<	if (FXSQLVAR^.sqlind <> nil) then
1480	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1481	<	if ((FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
1482	<	local_sqllen := FXSQLVAR^.sqllen + 2
1483	<	else
1484	<	local_sqllen := FXSQLVAR^.sqllen;
1485	<	FXSQLVAR^.sqlscale := Value^.sqlscale;
1486	<	IBAlloc(FXSQLVAR^.sqldata, 0, local_sqllen);
1487	<	Move(Value^.sqldata[0], FXSQLVAR^.sqldata[0], local_sqllen);
1488	<	FModified := True;
1489	<	end;
1490	<
1491	<	procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
243	>	procedure IBAlloc(var P; OldSize, NewSize: Integer);
244		var
245		i: Integer;
246		begin
247	<	if FUniqueName then
248	<	xSetAsXSQLVAR(Value)
1497	<	else
1498	<	for i := 0 to FParent.FCount - 1 do
1499	<	if FParent[i].FName = FName then
1500	<	FParent[i].xSetAsXSQLVAR(Value);
1501	<	end;
1502	<
1503	<	procedure TIBXSQLVAR.xSetIsNull(Value: Boolean);
1504	<	begin
1505	<	if Value then
1506	<	begin
1507	<	if not IsNullable then
1508	<	IsNullable := True;
1509	<
1510	<	if Assigned(FXSQLVAR^.sqlind) then
1511	<	FXSQLVAR^.sqlind^ := -1;
1512	<	FModified := True;
1513	<	end
1514	<	else
1515	<	if ((not Value) and IsNullable) then
1516	<	begin
1517	<	if Assigned(FXSQLVAR^.sqlind) then
1518	<	FXSQLVAR^.sqlind^ := 0;
1519	<	FModified := True;
1520	<	end;
1521	<	end;
1522	<
1523	<	procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
1524	<	var
1525	<	i: Integer;
1526	<	begin
1527	<	if FUniqueName then
1528	<	xSetIsNull(Value)
1529	<	else
1530	<	for i := 0 to FParent.FCount - 1 do
1531	<	if FParent[i].FName = FName then
1532	<	FParent[i].xSetIsNull(Value);
1533	<	end;
1534	<
1535	<	procedure TIBXSQLVAR.xSetIsNullable(Value: Boolean);
1536	<	begin
1537	<	if (Value <> IsNullable) then
1538	<	begin
1539	<	if Value then
1540	<	begin
1541	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype or 1;
1542	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1543	<	end
1544	<	else
1545	<	begin
1546	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype and (not 1);
1547	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1548	<	end;
1549	<	end;
1550	<	end;
1551	<
1552	<	procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
1553	<	var
1554	<	i: Integer;
1555	<	begin
1556	<	if FUniqueName then
1557	<	xSetIsNullable(Value)
1558	<	else
1559	<	for i := 0 to FParent.FCount - 1 do
1560	<	if FParent[i].FName = FName then
1561	<	FParent[i].xSetIsNullable(Value);
1562	<	end;
1563	<
1564	<	procedure TIBXSQLVAR.xSetAsBoolean(AValue: boolean);
1565	<	begin
1566	<	if IsNullable then
1567	<	IsNull := False;
1568	<
1569	<	FXSQLVAR^.sqltype := SQL_BOOLEAN;
1570	<	FXSQLVAR^.sqllen := 1;
1571	<	FXSQLVAR^.sqlscale := 0;
1572	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1573	<	if AValue then
1574	<	PByte(FXSQLVAR^.sqldata)^ := ISC_TRUE
1575	<	else
1576	<	PByte(FXSQLVAR^.sqldata)^ := ISC_FALSE;
1577	<	FModified := True;
1578	<	end;
1579	<
1580	<	procedure TIBXSQLVAR.Clear;
1581	<	begin
1582	<	IsNull := true;
1583	<	end;
1584	<
1585	<
1586	<	{ TIBXSQLDA }
1587	<	constructor TIBXSQLDA.Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
1588	<	begin
1589	<	inherited Create;
1590	<	FSQL := Query;
1591	<	FSize := 0;
1592	<	FUniqueRelationName := '';
1593	<	FInputSQLDA := sqldaType = daInput;
1594	<	end;
1595	<
1596	<	destructor TIBXSQLDA.Destroy;
1597	<	var
1598	<	i: Integer;
1599	<	begin
1600	<	if FXSQLDA <> nil then
1601	<	begin
1602	<	for i := 0 to FSize - 1 do
1603	<	begin
1604	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
1605	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
1606	<	FXSQLVARs[i].Free ;
1607	<	end;
1608	<	FreeMem(FXSQLDA);
1609	<	FXSQLDA := nil;
1610	<	FXSQLVARs := nil;
1611	<	end;
1612	<	inherited Destroy;
1613	<	end;
1614	<
1615	<	procedure TIBXSQLDA.SetParamName(FieldName: String; Idx: Integer;
1616	<	UniqueName: boolean);
1617	<	var
1618	<	fn: string;
1619	<	begin
1620	<	{$ifdef UseCaseSensitiveParamName}
1621	<	FXSQLVARs[Idx].FName := AnsiUpperCase(FieldName);
1622	<	{$else}
1623	<	FXSQLVARs[Idx].FName := FieldName;
1624	<	{$endif}
1625	<	FXSQLVARs[Idx].FIndex := Idx;
1626	<	FXSQLVARs[Idx].FUniqueName :=  UniqueName
1627	<	end;
1628	<
1629	<	function TIBXSQLDA.GetModified: Boolean;
1630	<	var
1631	<	i: Integer;
1632	<	begin
1633	<	result := False;
1634	<	for i := 0 to FCount - 1 do
1635	<	if FXSQLVARs[i].Modified then
1636	<	begin
1637	<	result := True;
1638	<	exit;
1639	<	end;
1640	<	end;
1641	<
1642	<	function TIBXSQLDA.GetRecordSize: Integer;
1643	<	begin
1644	<	result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
1645	<	end;
1646	<
1647	<	function TIBXSQLDA.GetXSQLDA: PXSQLDA;
1648	<	begin
1649	<	result := FXSQLDA;
1650	<	end;
1651	<
1652	<	function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
1653	<	begin
1654	<	if (Idx < 0) or (Idx >= FCount) then
1655	<	IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
1656	<	result := FXSQLVARs[Idx]
1657	<	end;
1658	<
1659	<	function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
1660	<	begin
1661	<	result := GetXSQLVARByName(Idx);
1662	<	if result = nil then
1663	<	IBError(ibxeFieldNotFound, [Idx]);
1664	<	end;
1665	<
1666	<	function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
1667	<	var
1668	<	s: String;
1669	<	i: Integer;
1670	<	begin
1671	<	{$ifdef ALLOWDIALECT3PARAMNAMES}
1672	<	s := FormatIdentifierValueNC(FSQL.Database.SQLDialect, Idx);
1673	<	{$else}
1674	<	{$ifdef UseCaseSensitiveParamName}
1675	<	s := AnsiUpperCase(Idx);
1676	<	{$else}
1677	<	s := Idx;
1678	<	{$endif}
1679	<	{$endif}
1680	<	for i := 0 to FCount - 1 do
1681	<	if Vars[i].FName = s then
1682	<	begin
1683	<	Result := FXSQLVARs[i];
1684	<	Exit;
1685	<	end;
1686	<	Result := nil;
1687	<	end;
1688	<
1689	<	procedure TIBXSQLDA.Initialize;
1690	<
1691	<	function VarByName(idx: string; limit: integer): TIBXSQLVAR;
1692	<	var
1693	<	k: integer;
1694	<	begin
1695	<	for k := 0 to limit do
1696	<	if FXSQLVARs[k].FName = idx then
1697	<	begin
1698	<	Result := FXSQLVARs[k];
1699	<	Exit;
1700	<	end;
1701	<	Result := nil;
1702	<	end;
1703	<
1704	<	var
1705	<	i, j, j_len: Integer;
1706	<	st: String;
1707	<	bUnique: Boolean;
1708	<	sBaseName: string;
1709	<	begin
1710	<	bUnique := True;
1711	<	if FXSQLDA <> nil then
1712	<	begin
1713	<	for i := 0 to FCount - 1 do
1714	<	begin
1715	<	with FXSQLVARs[i].Data^ do
1716	<	begin
1717	<
1718	<	{First get the unique relation name, if any}
1719	<
1720	<	if bUnique and (strpas(relname) <> '') then
1721	<	begin
1722	<	if FUniqueRelationName = '' then
1723	<	FUniqueRelationName := strpas(relname)
1724	<	else
1725	<	if strpas(relname) <> FUniqueRelationName then
1726	<	begin
1727	<	FUniqueRelationName := '';
1728	<	bUnique := False;
1729	<	end;
1730	<	end;
1731	<
1732	<	{If an output SQLDA then copy the aliasnames to the FName list. Ensure
1733	<	that they are all upper case only and disambiguated.
1734	<	}
1735	<
1736	<	if not FInputSQLDA then
1737	<	begin
1738	<	st := Space2Underscore(AnsiUppercase(strpas(aliasname)));
1739	<	if st = '' then
1740	<	begin
1741	<	sBaseName := 'F_'; {do not localize}
1742	<	aliasname_length := 2;
1743	<	j := 1; j_len := 1;
1744	<	st := sBaseName + IntToStr(j);
1745	<	end
1746	<	else
1747	<	begin
1748	<	j := 0; j_len := 0;
1749	<	sBaseName := st;
1750	<	end;
1751	<
1752	<	{Look for other columns with the same name and make unique}
1753	<
1754	<	while VarByName(st,i-1) <> nil do
1755	<	begin
1756	<	Inc(j);
1757	<	j_len := Length(IntToStr(j));
1758	<	if j_len + Length(sBaseName) > 31 then
1759	<	st := Copy(sBaseName, 1, 31 - j_len) + IntToStr(j)
1760	<	else
1761	<	st := sBaseName + IntToStr(j);
1762	<	end;
1763	<
1764	<	FXSQLVARs[i].FName := st;
1765	<	end;
1766	<
1767	<	{Finally initialise the XSQLVAR}
1768	<
1769	<	FXSQLVARs[i].FIndex := i;
1770	<
1771	<	case sqltype and (not 1) of
1772	<	SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
1773	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT, SQL_BOOLEAN,
1774	<	SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
1775	<	if (sqllen = 0) then
1776	<	{ Make sure you get a valid pointer anyway
1777	<	select '' from foo }
1778	<	IBAlloc(sqldata, 0, 1)
1779	<	else
1780	<	IBAlloc(sqldata, 0, sqllen)
1781	<	end;
1782	<	SQL_VARYING: begin
1783	<	IBAlloc(sqldata, 0, sqllen + 2);
1784	<	end;
1785	<	else
1786	<	IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
1787	<	end;
1788	<	if (sqltype and 1 = 1) then
1789	<	IBAlloc(sqlind, 0, SizeOf(Short))
1790	<	else
1791	<	if (sqlind <> nil) then
1792	<	ReallocMem(sqlind, 0);
1793	<	end;
1794	<	end;
1795	<	end;
1796	<	end;
1797	<
1798	<	procedure TIBXSQLDA.SetCount(Value: Integer);
1799	<	var
1800	<	i, OldSize: Integer;
1801	<	p : PXSQLVAR;
1802	<	begin
1803	<	FCount := Value;
1804	<	if FCount = 0 then
1805	<	FUniqueRelationName := ''
1806	<	else
1807	<	begin
1808	<	if FSize > 0 then
1809	<	OldSize := XSQLDA_LENGTH(FSize)
1810	<	else
1811	<	OldSize := 0;
1812	<	if FCount > FSize then
1813	<	begin
1814	<	IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
1815	<	SetLength(FXSQLVARs, FCount);
1816	<	FXSQLDA^.version := SQLDA_VERSION1;
1817	<	p := @FXSQLDA^.sqlvar[0];
1818	<	for i := 0 to FCount - 1 do
1819	<	begin
1820	<	if i >= FSize then
1821	<	FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
1822	<	FXSQLVARs[i].FXSQLVAR := p;
1823	<	p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
1824	<	end;
1825	<	FSize := FCount;
1826	<	end;
1827	<	if FSize > 0 then
1828	<	begin
1829	<	FXSQLDA^.sqln := Value;
1830	<	FXSQLDA^.sqld := Value;
1831	<	end;
1832	<	end;
247	>	ReallocMem(Pointer(P), NewSize);
248	>	for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
249		end;
250
251		{ TIBOutputDelimitedFile }
#	Line 1875 | Line 291 | begin
291		begin
292		for i := 0 to Columns.Count - 1 do
293		if i = 0 then
294	<	st := strpas(Columns[i].Data^.aliasname)
294	>	st := Columns[i].GetAliasname
295		else
296	<	st := st + FColDelimiter + strpas(Columns[i].Data^.aliasname);
296	>	st := st + FColDelimiter + Columns[i].GetAliasname;
297		st := st + FRowDelimiter;
298		{$IFDEF UNIX}
299		if FHandle <> -1 then
#	Line 2068 | Line 484 | begin
484		for i := 0 to Columns.Count - 1 do
485		begin
486		{$IFDEF UNIX}
487	<	BytesWritten := FpWrite(FHandle,Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen);
487	>	BytesWritten := FpWrite(FHandle,Columns[i].GetAsPointer^, Columns[i].GetSize);
488		{$ELSE}
489	<	WriteFile(FHandle, Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen,
489	>	WriteFile(FHandle, Columns[i].GetAsPointer^, Columns[i].GetSize,
490		BytesWritten, nil);
491		{$ENDIF}
492	<	if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
492	>	if BytesWritten <> DWORD(Columns[i].GetSize) then
493		exit;
494		end;
495		result := True;
#	Line 2108 | Line 524 | begin
524		for i := 0 to Params.Count - 1 do
525		begin
526		{$IFDEF UNIX}
527	<	BytesRead := FpRead(FHandle,Params[i].Data^.sqldata^,Params[i].Data^.sqllen);
527	>	BytesRead := FpRead(FHandle,Params[i].GetAsPointer^,Params[i].GetSize);
528		{$ELSE}
529	<	ReadFile(FHandle, Params[i].Data^.sqldata^, Params[i].Data^.sqllen,
529	>	ReadFile(FHandle, Params[i].GetAsPointer^, Params[i].GetSize,
530		BytesRead, nil);
531		{$ENDIF}
532	<	if BytesRead <> DWORD(Params[i].Data^.sqllen) then
532	>	if BytesRead <> DWORD(Params[i].GetSize) then
533		exit;
534		end;
535		result := True;
#	Line 2142 | Line 558 | end;
558		constructor TIBSQL.Create(AOwner: TComponent);
559		begin
560		inherited Create(AOwner);
2145	–	FIBLoaded := False;
2146	–	CheckIBLoaded;
2147	–	FIBLoaded := True;
561		FGenerateParamNames := False;
562		FGoToFirstRecordOnExecute := True;
563		FBase := TIBBase.Create(Self);
564		FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
565		FBase.BeforeTransactionEnd := BeforeTransactionEnd;
2153	–	FBOF := False;
2154	–	FEOF := False;
2155	–	FPrepared := False;
566		FRecordCount := 0;
567		FSQL := TStringList.Create;
568		TStringList(FSQL).OnChanging := SQLChanging;
569		TStringList(FSQL).OnChange := SQLChanged;
2160	–	FProcessedSQL := TStringList.Create;
2161	–	FHandle := nil;
2162	–	FSQLParams := TIBXSQLDA.Create(self,daInput);
2163	–	FSQLRecord := TIBXSQLDA.Create(self,daOutput);
2164	–	FSQLType := SQLUnknown;
570		FParamCheck := True;
2166	–	FCursor := HexStr(self); //Name + RandomString(8);
571		if AOwner is TIBDatabase then
572		Database := TIBDatabase(AOwner)
573		else
#	Line 2173 | Line 577 | end;
577
578		destructor TIBSQL.Destroy;
579		begin
580	<	if FIBLoaded then
581	<	begin
582	<	if (FOpen) then
2179	<	Close;
2180	<	if (FHandle <> nil) then
2181	<	FreeHandle;
2182	<	FSQL.Free;
2183	<	FProcessedSQL.Free;
2184	<	FBase.Free;
2185	<	FSQLParams.Free;
2186	<	FSQLRecord.Free;
2187	<	end;
580	>	FreeHandle;
581	>	FSQL.Free;
582	>	FBase.Free;
583		inherited Destroy;
584		end;
585
#	Line 2192 | Line 587 | procedure TIBSQL.BatchInput(InputObject:
587		begin
588		if not Prepared then
589		Prepare;
590	<	InputObject.FParams := Self.FSQLParams;
590	>	InputObject.FParams := Self.GetSQLParams;
591		InputObject.ReadyFile;
592	<	if FSQLType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
592	>	if GetSQLStatementType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
593		while InputObject.ReadParameters do
594		ExecQuery;
595		end;
#	Line 2204 | Line 599 | begin
599		CheckClosed;
600		if not Prepared then
601		Prepare;
602	<	if FSQLType = SQLSelect then begin
602	>	if GetSQLStatementType = SQLSelect then begin
603		try
604		ExecQuery;
605	<	OutputObject.FColumns := Self.FSQLRecord;
605	>	OutputObject.FColumns := Self.FResults;
606		OutputObject.ReadyFile;
607		if not FGoToFirstRecordOnExecute then
608		Next;
#	Line 2221 | Line 616 | end;
616
617		procedure TIBSQL.CheckClosed;
618		begin
619	<	if FOpen then IBError(ibxeSQLOpen, [nil]);
619	>	if FResultSet <> nil  then IBError(ibxeSQLOpen, [nil]);
620		end;
621
622		procedure TIBSQL.CheckOpen;
623		begin
624	<	if not FOpen then IBError(ibxeSQLClosed, [nil]);
624	>	if FResultSet = nil then IBError(ibxeSQLClosed, [nil]);
625		end;
626
627		procedure TIBSQL.CheckValidStatement;
628		begin
629		FBase.CheckTransaction;
630	<	if (FHandle = nil) then
630	>	if (FStatement = nil) then
631		IBError(ibxeInvalidStatementHandle, [nil]);
632		end;
633
634		procedure TIBSQL.Close;
2240	–	var
2241	–	isc_res: ISC_STATUS;
635		begin
636	<	try
637	<	if (FHandle <> nil) and (SQLType = SQLSelect) and FOpen then begin
638	<	isc_res := Call(
639	<	isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
640	<	False);
641	<	if (StatusVector^ = 1) and (isc_res > 0) and
642	<	not CheckStatusVector(
2250	<	[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
2251	<	IBDatabaseError;
2252	<	end;
2253	<	finally
2254	<	FEOF := False;
2255	<	FBOF := False;
2256	<	FOpen := False;
2257	<	FRecordCount := 0;
2258	<	end;
636	>	if FResults <> nil then
637	>	FResults.SetRetainInterfaces(false);
638	>	FResultSet := nil;
639	>	FResults := nil;
640	>	FBOF := false;
641	>	FEOF := false;
642	>	FRecordCount := 0;
643		end;
644
645	<	function TIBSQL.Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
645	>	function TIBSQL.GetFieldCount: integer;
646		begin
647	<	result := 0;
648	<	if Transaction <> nil then
649	<	result := Transaction.Call(ErrCode, RaiseError)
647	>	if FResults <> nil then
648	>	Result := FResults.GetCount
649	>	else
650	>	if FMetaData <> nil then
651	>	Result := FMetaData.GetCount
652		else
653	<	if RaiseError and (ErrCode > 0) then
2268	<	IBDataBaseError;
653	>	Result := 0;
654		end;
655
656	<	function TIBSQL.Current: TIBXSQLDA;
656	>	function TIBSQL.GetOpen: Boolean;
657		begin
658	<	result := FSQLRecord;
658	>	Result := FResultSet <> nil;
659		end;
660
661	<	function TIBSQL.GetFieldCount: integer;
661	>	function TIBSQL.GetPrepared: Boolean;
662		begin
663	<	Result := FSQLRecord.Count
663	>	Result := (FStatement <> nil) and FStatement.IsPrepared;
664	>	end;
665	>
666	>	function TIBSQL.GetSQLStatementType: TIBSQLStatementTypes;
667	>	begin
668	>	if FStatement = nil then
669	>	Result := SQLUnknown
670	>	else
671	>	Result := FStatement.GetSQLStatementType;
672		end;
673
674		procedure TIBSQL.SetUniqueParamNames(AValue: Boolean);
#	Line 2287 | Line 680 | end;
680
681		procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
682		begin
683	<	if (FHandle <> nil) then begin
2291	<	Close;
2292	<	FreeHandle;
2293	<	end;
683	>	FreeHandle;
684		end;
685
686		procedure TIBSQL.ExecQuery;
#	Line 2300 | Line 690 | begin
690		CheckClosed;
691		if not Prepared then Prepare;
692		CheckValidStatement;
693	<	case FSQLType of
694	<	SQLSelect: begin
695	<	Call(isc_dsql_execute2(StatusVector,
696	<	TRHandle,
697	<	@FHandle,
698	<	Database.SQLDialect,
699	<	FSQLParams.AsXSQLDA,
700	<	nil), True);
701	<	Call(
702	<	isc_dsql_set_cursor_name(StatusVector, @FHandle, PChar(FCursor), 0),
703	<	True);
704	<	FOpen := True;
705	<	FBOF := True;
706	<	FEOF := False;
707	<	FRecordCount := 0;
708	<	if not (csDesigning in ComponentState) then
709	<	MonitorHook.SQLExecute(Self);
710	<	if FGoToFirstRecordOnExecute then
2321	<	Next;
2322	<	end;
2323	<	SQLExecProcedure: begin
2324	<	fetch_res := Call(isc_dsql_execute2(StatusVector,
2325	<	TRHandle,
2326	<	@FHandle,
2327	<	Database.SQLDialect,
2328	<	FSQLParams.AsXSQLDA,
2329	<	FSQLRecord.AsXSQLDA), True);
2330	<	if not (csDesigning in ComponentState) then
2331	<	MonitorHook.SQLExecute(Self);
2332	<	(*      if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
2333	<	begin
2334	<	{ Sometimes a prepared stored procedure appears to get
2335	<	off sync on the server ....This code is meant to try
2336	<	to work around the problem simply by "retrying". This
2337	<	need to be reproduced and fixed.
2338	<	}
2339	<	isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2340	<	PChar(FProcessedSQL.Text), 1, nil);
2341	<	Call(isc_dsql_execute2(StatusVector,
2342	<	TRHandle,
2343	<	@FHandle,
2344	<	Database.SQLDialect,
2345	<	FSQLParams.AsXSQLDA,
2346	<	FSQLRecord.AsXSQLDA), True);
2347	<	end;  *)
2348	<	end
2349	<	else
2350	<	Call(isc_dsql_execute(StatusVector,
2351	<	TRHandle,
2352	<	@FHandle,
2353	<	Database.SQLDialect,
2354	<	FSQLParams.AsXSQLDA), True);
2355	<	if not (csDesigning in ComponentState) then
2356	<	MonitorHook.SQLExecute(Self);
693	>	if SQLStatementType = SQLSelect then
694	>	begin
695	>	FResultSet := FStatement.OpenCursor;
696	>	FResults := FResultSet;
697	>	FResults.SetRetainInterfaces(true);
698	>	FBOF := True;
699	>	FEOF := False;
700	>	FRecordCount := 0;
701	>	if not (csDesigning in ComponentState) then
702	>	MonitorHook.SQLExecute(Self);
703	>	if FGoToFirstRecordOnExecute then
704	>	Next;
705	>	end
706	>	else
707	>	begin
708	>	FResults := FStatement.Execute;
709	>	if not (csDesigning in ComponentState) then
710	>	MonitorHook.SQLExecute(Self);
711		end;
712		FBase.DoAfterExecQuery(self);
713	<	//  writeln('Rows Affected = ',RowsAffected);
713	>	end;
714	>
715	>	function TIBSQL.HasField(FieldName: String): boolean;
716	>	begin
717	>	if FResults = nil then
718	>	IBError(ibxeNoFieldAccess,[nil]);
719	>
720	>	Result := FResults.ByName(FieldName) <> nil;
721		end;
722
723		function TIBSQL.GetEOF: Boolean;
724		begin
725	<	result := FEOF or not FOpen;
725	>	result := FEOF or (FResultSet = nil);
726		end;
727
728	<	function TIBSQL.FieldByName(FieldName: String): TIBXSQLVAR;
2368	<	var
2369	<	i: Integer;
728	>	function TIBSQL.FieldByName(FieldName: String): ISQLData;
729		begin
730	<	i := GetFieldIndex(FieldName);
731	<	if (i < 0) then
730	>	if FResults = nil then
731	>	IBError(ibxeNoFieldAccess,[nil]);
732	>
733	>	Result := FResults.ByName(FieldName);
734	>
735	>	if Result = nil then
736		IBError(ibxeFieldNotFound, [FieldName]);
2374	–	result := GetFields(i);
737		end;
738
739	<	function TIBSQL.ParamByName(ParamName: String): TIBXSQLVAR;
739	>	function TIBSQL.ParamByName(ParamName: String): ISQLParam;
740		begin
741		Result := Params.ByName(ParamName);
742		end;
743
744	<	function TIBSQL.GetFields(const Idx: Integer): TIBXSQLVAR;
744	>	function TIBSQL.GetFields(const Idx: Integer): ISQLData;
745		begin
746	<	if (Idx < 0) or (Idx >= FSQLRecord.Count) then
746	>	if FResults = nil then
747	>	IBError(ibxeNoFieldAccess,[nil]);
748	>
749	>	if (Idx < 0) or (Idx >= FResults.GetCount) then
750		IBError(ibxeFieldNotFound, [IntToStr(Idx)]);
751	<	result := FSQLRecord[Idx];
751	>	result := FResults[Idx];
752		end;
753
754		function TIBSQL.GetFieldIndex(FieldName: String): Integer;
755	+	var Field: IColumnMetaData;
756		begin
757	<	if (FSQLRecord.GetXSQLVarByName(FieldName) = nil) then
757	>	if FMetaData = nil then
758	>	IBError(ibxeNoFieldAccess,[nil]);
759	>
760	>	Field := FMetaData.ByName(FieldName);
761	>
762	>	if Field = nil then
763		result := -1
764		else
765	<	result := FSQLRecord.GetXSQLVarByName(FieldName).Index;
765	>	result := Field.GetIndex;
766		end;
767
768	<	function TIBSQL.Next: TIBXSQLDA;
2398	<	var
2399	<	fetch_res: ISC_STATUS;
768	>	function TIBSQL.Next: boolean;
769		begin
770	<	result := nil;
771	<	if not FEOF then begin
770	>	result := false;
771	>	if not FEOF then
772	>	begin
773		CheckOpen;
774	<	{ Go to the next record... }
775	<	fetch_res :=
776	<	Call(isc_dsql_fetch(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.AsXSQLDA), False);
777	<	if (fetch_res = 100) or (CheckStatusVector([isc_dsql_cursor_err])) then begin
778	<	FEOF := True;
779	<	end else if (fetch_res > 0) then begin
780	<	try
781	<	IBDataBaseError;
782	<	except
2413	<	Close;
2414	<	raise;
2415	<	end;
2416	<	end else begin
774	>	try
775	>	Result := FResultSet.FetchNext;
776	>	except
777	>	Close;
778	>	raise;
779	>	end;
780	>
781	>	if Result then
782	>	begin
783		Inc(FRecordCount);
784		FBOF := False;
785	<	result := FSQLRecord;
786	<	end;
785	>	end
786	>	else
787	>	FEOF := true;
788	>
789		if not (csDesigning in ComponentState) then
790		MonitorHook.SQLFetch(Self);
791		end;
792		end;
793
794		procedure TIBSQL.FreeHandle;
2427	–	var
2428	–	isc_res: ISC_STATUS;
795		begin
796	<	try
797	<	{ The following two lines merely set the SQLDA count
798	<	variable FCount to 0, but do not deallocate
799	<	That way the allocations can be reused for
800	<	a new query sring in the same SQL instance }
801	<	FSQLRecord.Count := 0;
802	<	FSQLParams.Count := 0;
803	<	if FHandle <> nil then begin
2438	<	isc_res :=
2439	<	Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
2440	<	if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
2441	<	IBDataBaseError;
2442	<	end;
2443	<	finally
2444	<	FPrepared := False;
2445	<	FHandle := nil;
2446	<	end;
796	>	if FStatement <> nil then
797	>	FStatement.SetRetainInterfaces(false);
798	>	Close;
799	>	FStatement := nil;
800	>	FResults := nil;
801	>	FResultSet := nil;
802	>	FMetaData := nil;
803	>	FSQLParams := nil;
804		end;
805
806		function TIBSQL.GetDatabase: TIBDatabase;
#	Line 2451 | Line 808 | begin
808		result := FBase.Database;
809		end;
810
2454	–	function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
2455	–	begin
2456	–	result := FBase.DBHandle;
2457	–	end;
2458	–
811		function TIBSQL.GetPlan: String;
2460	–	var
2461	–	result_buffer: array[0..16384] of Char;
2462	–	result_length, i: Integer;
2463	–	info_request: Char;
812		begin
813		if (not Prepared) or
814	<	(not (FSQLType in [SQLSelect, SQLSelectForUpdate,
814	>	(not (GetSQLStatementType in [SQLSelect, SQLSelectForUpdate,
815		{TODO: SQLExecProcedure, }
816		SQLUpdate, SQLDelete])) then
817		result := ''
818	<	else begin
819	<	info_request := isc_info_sql_get_plan;
2472	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
2473	<	SizeOf(result_buffer), result_buffer), True);
2474	<	if (result_buffer[0] <> isc_info_sql_get_plan) then
2475	<	IBError(ibxeUnknownError, [nil]);
2476	<	result_length := isc_vax_integer(@result_buffer[1], 2);
2477	<	SetString(result, nil, result_length);
2478	<	for i := 1 to result_length do
2479	<	result[i] := result_buffer[i + 2];
2480	<	result := Trim(result);
2481	<	end;
818	>	else
819	>	Result := FStatement.GetPlan;
820		end;
821
822		function TIBSQL.GetRecordCount: Integer;
823		begin
824	<	result := FRecordCount;
824	>	Result := FRecordCount;
825		end;
826
827		function TIBSQL.GetRowsAffected: Integer;
828		var
829	<	info_request: Char;
2492	<	RB: TResultBuffer;
829	>	SelectCount, InsertCount, UpdateCount, DeleteCount: integer;
830		begin
831		if not Prepared then
832	<	result := -1
833	<	else begin
834	<	RB := TResultBuffer.Create;
835	<	try
836	<	info_request := isc_info_sql_records;
2500	<	if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
2501	<	RB.Size, RB.buffer) > 0 then
2502	<	IBDatabaseError;
2503	<	case SQLType of
2504	<	SQLInsert, SQLUpdate: {Covers Insert or Update as well as individual update}
2505	<	Result := RB.GetValue(isc_info_sql_records, isc_info_req_insert_count)+
2506	<	RB.GetValue(isc_info_sql_records, isc_info_req_update_count);
2507	<	SQLDelete:
2508	<	Result := RB.GetValue(isc_info_sql_records, isc_info_req_delete_count);
2509	<	SQLExecProcedure:
2510	<	Result :=  RB.GetValue(isc_info_sql_records, isc_info_req_insert_count) +
2511	<	RB.GetValue(isc_info_sql_records, isc_info_req_update_count) +
2512	<	RB.GetValue(isc_info_sql_records, isc_info_req_delete_count);
2513	<	else
2514	<	Result := 0;
2515	<	end;
2516	<	finally
2517	<	RB.Free;
2518	<	end;
832	>	Result := -1
833	>	else
834	>	begin
835	>	FStatement.GetRowsAffected(SelectCount, InsertCount, UpdateCount, DeleteCount);
836	>	Result := InsertCount + UpdateCount + DeleteCount;
837		end;
838		end;
839
840	<	function TIBSQL.GetSQLParams: TIBXSQLDA;
840	>	function TIBSQL.GetSQLParams: ISQLParams;
841		begin
842		if not Prepared then
843		Prepare;
844	<	result := FSQLParams;
844	>	result := Statement.SQLParams;
845		end;
846
847		function TIBSQL.GetTransaction: TIBTransaction;
#	Line 2531 | Line 849 | begin
849		result := FBase.Transaction;
850		end;
851
2534	–	function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
2535	–	begin
2536	–	result := FBase.TRHandle;
2537	–	end;
2538	–
2539	–	{
2540	–	Preprocess SQL
2541	–	Using FSQL, process the typed SQL and put the process SQL
2542	–	in FProcessedSQL and parameter names in FSQLParams
2543	–	}
2544	–	procedure TIBSQL.PreprocessSQL;
2545	–	var
2546	–	cCurChar, cNextChar, cQuoteChar: Char;
2547	–	sSQL, sProcessedSQL, sParamName: String;
2548	–	i, iLenSQL, iSQLPos: Integer;
2549	–	iCurState {$ifdef ALLOWDIALECT3PARAMNAMES}, iCurParamState {$endif}: Integer;
2550	–	iParamSuffix: Integer;
2551	–	slNames: TStrings;
2552	–
2553	–	const
2554	–	DefaultState = 0;
2555	–	CommentState = 1;
2556	–	QuoteState = 2;
2557	–	ParamState = 3;
2558	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2559	–	ParamDefaultState = 0;
2560	–	ParamQuoteState = 1;
2561	–	{$endif}
2562	–
2563	–	procedure AddToProcessedSQL(cChar: Char);
2564	–	begin
2565	–	sProcessedSQL[iSQLPos] := cChar;
2566	–	Inc(iSQLPos);
2567	–	end;
2568	–
2569	–	begin
2570	–	sParamName := '';
2571	–	slNames := TStringList.Create;
2572	–	try
2573	–	{ Do some initializations of variables }
2574	–	iParamSuffix := 0;
2575	–	cQuoteChar := '''';
2576	–	sSQL := FSQL.Text;
2577	–	iLenSQL := Length(sSQL);
2578	–	SetString(sProcessedSQL, nil, iLenSQL + 1);
2579	–	i := 1;
2580	–	iSQLPos := 1;
2581	–	iCurState := DefaultState;
2582	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2583	–	iCurParamState := ParamDefaultState;
2584	–	{$endif}
2585	–	{ Now, traverse through the SQL string, character by character,
2586	–	picking out the parameters and formatting correctly for InterBase }
2587	–	while (i <= iLenSQL) do begin
2588	–	{ Get the current token and a look-ahead }
2589	–	cCurChar := sSQL[i];
2590	–	if i = iLenSQL then
2591	–	cNextChar := #0
2592	–	else
2593	–	cNextChar := sSQL[i + 1];
2594	–	{ Now act based on the current state }
2595	–	case iCurState of
2596	–	DefaultState: begin
2597	–	case cCurChar of
2598	–	'''', '"': begin
2599	–	cQuoteChar := cCurChar;
2600	–	iCurState := QuoteState;
2601	–	end;
2602	–	'?', ':': begin
2603	–	iCurState := ParamState;
2604	–	AddToProcessedSQL('?');
2605	–	end;
2606	–	'/': if (cNextChar = '*') then begin
2607	–	AddToProcessedSQL(cCurChar);
2608	–	Inc(i);
2609	–	iCurState := CommentState;
2610	–	end;
2611	–	end;
2612	–	end;
2613	–	CommentState: begin
2614	–	if (cNextChar = #0) then
2615	–	IBError(ibxeSQLParseError, [SEOFInComment])
2616	–	else if (cCurChar = '*') then begin
2617	–	if (cNextChar = '/') then
2618	–	iCurState := DefaultState;
2619	–	end;
2620	–	end;
2621	–	QuoteState: begin
2622	–	if cNextChar = #0 then
2623	–	IBError(ibxeSQLParseError, [SEOFInString])
2624	–	else if (cCurChar = cQuoteChar) then begin
2625	–	if (cNextChar = cQuoteChar) then begin
2626	–	AddToProcessedSQL(cCurChar);
2627	–	Inc(i);
2628	–	end else
2629	–	iCurState := DefaultState;
2630	–	end;
2631	–	end;
2632	–	ParamState:
2633	–	begin
2634	–	{ collect the name of the parameter }
2635	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2636	–	if iCurParamState = ParamDefaultState then
2637	–	begin
2638	–	if cCurChar = '"' then
2639	–	iCurParamState := ParamQuoteState
2640	–	else
2641	–	{$endif}
2642	–	if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
2643	–	sParamName := sParamName + cCurChar
2644	–	else if FGenerateParamNames then
2645	–	begin
2646	–	sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
2647	–	Inc(iParamSuffix);
2648	–	iCurState := DefaultState;
2649	–	slNames.AddObject(sParamName,self); //Note local convention
2650	–	//add pointer to self to mark entry
2651	–	sParamName := '';
2652	–	end
2653	–	else
2654	–	IBError(ibxeSQLParseError, [SParamNameExpected]);
2655	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2656	–	end
2657	–	else begin
2658	–	{ determine if Quoted parameter name is finished }
2659	–	if cCurChar = '"' then
2660	–	begin
2661	–	Inc(i);
2662	–	slNames.Add(sParamName);
2663	–	SParamName := '';
2664	–	iCurParamState := ParamDefaultState;
2665	–	iCurState := DefaultState;
2666	–	end
2667	–	else
2668	–	sParamName := sParamName + cCurChar
2669	–	end;
2670	–	{$endif}
2671	–	{ determine if the unquoted parameter name is finished }
2672	–	if {$ifdef ALLOWDIALECT3PARAMNAMES}(iCurParamState <> ParamQuoteState) and {$endif}
2673	–	(iCurState <> DefaultState) then
2674	–	begin
2675	–	if not (cNextChar in ['A'..'Z', 'a'..'z',
2676	–	'0'..'9', '_', '$']) then begin
2677	–	Inc(i);
2678	–	iCurState := DefaultState;
2679	–	slNames.Add(sParamName);
2680	–	sParamName := '';
2681	–	end;
2682	–	end;
2683	–	end;
2684	–	end;
2685	–	if iCurState <> ParamState then
2686	–	AddToProcessedSQL(sSQL[i]);
2687	–	Inc(i);
2688	–	end;
2689	–	AddToProcessedSQL(#0);
2690	–	FSQLParams.Count := slNames.Count;
2691	–	for i := 0 to slNames.Count - 1 do
2692	–	FSQLParams.SetParamName(slNames[i], i,FUniqueParamNames or (slNames.Objects[i] <> nil));
2693	–	FProcessedSQL.Text := sProcessedSQL;
2694	–	finally
2695	–	slNames.Free;
2696	–	end;
2697	–	end;
2698	–
852		procedure TIBSQL.SetDatabase(Value: TIBDatabase);
853		begin
854		FBase.Database := Value;
855		end;
856
857		procedure TIBSQL.Prepare;
2705	–	var
2706	–	stmt_len: Integer;
2707	–	res_buffer: array[0..7] of Char;
2708	–	type_item: Char;
858		begin
859		CheckClosed;
860		FBase.CheckDatabase;
861		FBase.CheckTransaction;
862	<	if FPrepared then
862	>	Close;
863	>	if Prepared then
864		exit;
865		if (FSQL.Text = '') then
866		IBError(ibxeEmptyQuery, [nil]);
867	+
868	+	if FStatement <> nil then
869	+	FStatement.Prepare(Transaction.TransactionIntf)
870	+	else
871		if not ParamCheck then
872	<	FProcessedSQL.Text := FSQL.Text
872	>	FStatement := Database.Attachment.Prepare(Transaction.TransactionIntf,SQL.Text)
873		else
874	<	PreprocessSQL;
875	<	if (FProcessedSQL.Text = '') then
876	<	IBError(ibxeEmptyQuery, [nil]);
877	<	try
878	<	Call(isc_dsql_alloc_statement2(StatusVector, DBHandle,
879	<	@FHandle), True);
880	<	Call(isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
881	<	PChar(FProcessedSQL.Text), Database.SQLDialect, nil), True);
2728	<	{ After preparing the statement, query the stmt type and possibly
2729	<	create a FSQLRecord "holder" }
2730	<	{ Get the type of the statement }
2731	<	type_item := isc_info_sql_stmt_type;
2732	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
2733	<	SizeOf(res_buffer), res_buffer), True);
2734	<	if (res_buffer[0] <> isc_info_sql_stmt_type) then
2735	<	IBError(ibxeUnknownError, [nil]);
2736	<	stmt_len := isc_vax_integer(@res_buffer[1], 2);
2737	<	FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
2738	<	{ Done getting the type }
2739	<	case FSQLType of
2740	<	SQLGetSegment,
2741	<	SQLPutSegment,
2742	<	SQLStartTransaction: begin
2743	<	FreeHandle;
2744	<	IBError(ibxeNotPermitted, [nil]);
2745	<	end;
2746	<	SQLCommit,
2747	<	SQLRollback,
2748	<	SQLDDL, SQLSetGenerator,
2749	<	SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
2750	<	SQLExecProcedure: begin
2751	<	{ We already know how many inputs there are, so... }
2752	<	if (FSQLParams.FXSQLDA <> nil) and
2753	<	(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
2754	<	FSQLParams.FXSQLDA), False) > 0) then
2755	<	IBDataBaseError;
2756	<	FSQLParams.Initialize;
2757	<	if FSQLType in [SQLSelect, SQLSelectForUpdate,
2758	<	SQLExecProcedure] then begin
2759	<	{ Allocate an initial output descriptor (with one column) }
2760	<	FSQLRecord.Count := 1;
2761	<	{ Using isc_dsql_describe, get the right size for the columns... }
2762	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2763	<	if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
2764	<	FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
2765	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2766	<	end else if FSQLRecord.FXSQLDA^.sqld = 0 then
2767	<	FSQLRecord.Count := 0;
2768	<	FSQLRecord.Initialize;
2769	<	end;
2770	<	end;
2771	<	end;
2772	<	FPrepared := True;
2773	<	if not (csDesigning in ComponentState) then
874	>	FStatement := Database.Attachment.PrepareWithNamedParameters(
875	>	Transaction.TransactionIntf,
876	>	SQL.Text,
877	>	GenerateParamNames);
878	>	FMetaData := FStatement.GetMetaData;
879	>	FSQLParams := FStatement.GetSQLParams;
880	>	FStatement.SetRetainInterfaces(true);
881	>	if not (csDesigning in ComponentState) then
882		MonitorHook.SQLPrepare(Self);
2775	–	except
2776	–	on E: Exception do begin
2777	–	if (FHandle <> nil) then
2778	–	FreeHandle;
2779	–	if E is EIBInterBaseError then
2780	–	raise EIBInterBaseError.Create(EIBInterBaseError(E).SQLCode,
2781	–	EIBInterBaseError(E).IBErrorCode,
2782	–	EIBInterBaseError(E).Message +
2783	–	sSQLErrorSeparator + FProcessedSQL.Text)
2784	–	else
2785	–	raise;
2786	–	end;
2787	–	end;
883		end;
884
885		function TIBSQL.GetUniqueRelationName: String;
886		begin
887	<	if FPrepared and (FSQLType = SQLSelect) then
888	<	result := FSQLRecord.UniqueRelationName
887	>	if Prepared and (GetSQLStatementType = SQLSelect) then
888	>	result := FMetaData.GetUniqueRelationName
889		else
890		result := '';
891		end;
#	Line 2817 | Line 912 | procedure TIBSQL.SQLChanging(Sender: TOb
912		begin
913		if Assigned(OnSQLChanging) then
914		OnSQLChanging(Self);
915	<	if FHandle <> nil then FreeHandle;
915	>
916	>	FreeHandle;
917		end;
918
919		procedure TIBSQL.SQLChanged(Sender: TObject);
#	Line 2829 | Line 925 | end;
925		procedure TIBSQL.BeforeTransactionEnd(Sender: TObject;
926		Action: TTransactionAction);
927		begin
928	<	if (FOpen) then
929	<	Close;
928	>	if not (Owner is TIBCustomDataSet) then
929	>	FreeHandle;
930		end;
931
932		end.

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