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root/public/ibx/trunk/runtime/IBSQL.pas

Comparing ibx/trunk/runtime/IBSQL.pas (file contents):
Revision 19 by tony, Mon Jul 7 13:00:15 2014 UTC vs.
Revision 80 by tony, Mon Jan 1 11:31:07 2018 UTC

#	Line 35 | Line 35 | unit IBSQL;
35
36		{$Mode Delphi}
37
38	<	{ IBSQL param names in dialect 3 quoted format (e.g. :"MyParam") are by default disabled.
38	>	{$codepage UTF8}
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}
40	>	(* Define IBXQUERYSTATS to write to stdout a summary of query execution
41	>	statistics each time a query is executed
42	>
43	>	Define IBXQUERYTIME to write to stdout The local execution time for each
44	>	query
45	>	*)
46	>
47	>	{ $DEFINE IBXQUERYSTATS}
48	>	{ $DEFINE IBXQUERYTIME}
49
50		interface
51
#	Line 76 | Line 55 | uses
55		{$ELSE}
56		baseunix, unix,
57		{$ENDIF}
58	<	SysUtils, Classes, Forms, Controls, IBHeader,
80	<	IBErrorCodes, IBExternals, DB, IB, IBDatabase, IBUtils, IBXConst;
58	>	SysUtils, Classes, IBExternals, IB, IBDatabase, IBUtils;
59
60		type
83	–	TIBSQL = class;
84	–	TIBXSQLDA = class;
85	–
86	–	{ TIBXSQLVAR }
87	–	TIBXSQLVAR = class(TObject)
88	–	private
89	–	FParent: TIBXSQLDA;
90	–	FSQL: TIBSQL;
91	–	FIndex: Integer;
92	–	FModified: Boolean;
93	–	FName: String;
94	–	FUniqueName: boolean;
95	–	FXSQLVAR: PXSQLVAR;       { Point to the PXSQLVAR in the owner object }
96	–
97	–	function AdjustScale(Value: Int64; Scale: Integer): Double;
98	–	function AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
99	–	function AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
100	–	function GetAsCurrency: Currency;
101	–	function GetAsInt64: Int64;
102	–	function GetAsDateTime: TDateTime;
103	–	function GetAsDouble: Double;
104	–	function GetAsFloat: Float;
105	–	function GetAsLong: Long;
106	–	function GetAsPointer: Pointer;
107	–	function GetAsQuad: TISC_QUAD;
108	–	function GetAsShort: Short;
109	–	function GetAsString: String;
110	–	function GetAsVariant: Variant;
111	–	function GetAsXSQLVAR: PXSQLVAR;
112	–	function GetIsNull: Boolean;
113	–	function GetIsNullable: Boolean;
114	–	function GetSize: Integer;
115	–	function GetSQLType: Integer;
116	–	procedure SetAsCurrency(Value: Currency);
117	–	procedure SetAsInt64(Value: Int64);
118	–	procedure SetAsDate(Value: TDateTime);
119	–	procedure SetAsTime(Value: TDateTime);
120	–	procedure SetAsDateTime(Value: TDateTime);
121	–	procedure SetAsDouble(Value: Double);
122	–	procedure SetAsFloat(Value: Float);
123	–	procedure SetAsLong(Value: Long);
124	–	procedure SetAsPointer(Value: Pointer);
125	–	procedure SetAsQuad(Value: TISC_QUAD);
126	–	procedure SetAsShort(Value: Short);
127	–	procedure SetAsString(Value: String);
128	–	procedure SetAsVariant(Value: Variant);
129	–	procedure SetAsXSQLVAR(Value: PXSQLVAR);
130	–	procedure SetIsNull(Value: Boolean);
131	–	procedure SetIsNullable(Value: Boolean);
132	–	procedure xSetAsCurrency(Value: Currency);
133	–	procedure xSetAsInt64(Value: Int64);
134	–	procedure xSetAsDate(Value: TDateTime);
135	–	procedure xSetAsTime(Value: TDateTime);
136	–	procedure xSetAsDateTime(Value: TDateTime);
137	–	procedure xSetAsDouble(Value: Double);
138	–	procedure xSetAsFloat(Value: Float);
139	–	procedure xSetAsLong(Value: Long);
140	–	procedure xSetAsPointer(Value: Pointer);
141	–	procedure xSetAsQuad(Value: TISC_QUAD);
142	–	procedure xSetAsShort(Value: Short);
143	–	procedure xSetAsString(Value: String);
144	–	procedure xSetAsVariant(Value: Variant);
145	–	procedure xSetAsXSQLVAR(Value: PXSQLVAR);
146	–	procedure xSetIsNull(Value: Boolean);
147	–	procedure xSetIsNullable(Value: Boolean);
148	–	public
149	–	constructor Create(Parent: TIBXSQLDA; Query: TIBSQL);
150	–	procedure Assign(Source: TIBXSQLVAR);
151	–	procedure Clear;
152	–	procedure LoadFromFile(const FileName: String);
153	–	procedure LoadFromStream(Stream: TStream);
154	–	procedure SaveToFile(const FileName: String);
155	–	procedure SaveToStream(Stream: TStream);
156	–	property AsDate: TDateTime read GetAsDateTime write SetAsDate;
157	–	property AsTime: TDateTime read GetAsDateTime write SetAsTime;
158	–	property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
159	–	property AsDouble: Double read GetAsDouble write SetAsDouble;
160	–	property AsFloat: Float read GetAsFloat write SetAsFloat;
161	–	property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
162	–	property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
163	–	property AsInteger: Integer read GetAsLong write SetAsLong;
164	–	property AsLong: Long read GetAsLong write SetAsLong;
165	–	property AsPointer: Pointer read GetAsPointer write SetAsPointer;
166	–	property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
167	–	property AsShort: Short read GetAsShort write SetAsShort;
168	–	property AsString: String read GetAsString write SetAsString;
169	–	property AsVariant: Variant read GetAsVariant write SetAsVariant;
170	–	property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
171	–	property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
172	–	property IsNull: Boolean read GetIsNull write SetIsNull;
173	–	property IsNullable: Boolean read GetIsNullable write SetIsNullable;
174	–	property Index: Integer read FIndex;
175	–	property Modified: Boolean read FModified write FModified;
176	–	property Name: String read FName;
177	–	property Size: Integer read GetSize;
178	–	property SQLType: Integer read GetSQLType;
179	–	property Value: Variant read GetAsVariant write SetAsVariant;
180	–	end;
181	–
182	–	TIBXSQLVARArray = Array of TIBXSQLVAR;
183	–
184	–	TIBXSQLDAType = (daInput,daOutput);
185	–
186	–	{ TIBXSQLDA }
187	–
188	–	TIBXSQLDA = class(TObject)
189	–	protected
190	–	FSQL: TIBSQL;
191	–	FCount: Integer;
192	–	FSize: Integer;
193	–	FInputSQLDA: boolean;
194	–	FXSQLDA: PXSQLDA;
195	–	FXSQLVARs: TIBXSQLVARArray; { array of IBXQLVARs }
196	–	FUniqueRelationName: String;
197	–	function GetModified: Boolean;
198	–	function GetRecordSize: Integer;
199	–	function GetXSQLDA: PXSQLDA;
200	–	function GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
201	–	function GetXSQLVARByName(Idx: String): TIBXSQLVAR;
202	–	procedure Initialize;
203	–	procedure SetCount(Value: Integer);
204	–	public
205	–	constructor Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
206	–	destructor Destroy; override;
207	–	procedure SetParamName(FieldName: String; Idx: Integer; UniqueName: boolean = false);
208	–	function ByName(Idx: String): TIBXSQLVAR;
209	–	property AsXSQLDA: PXSQLDA read GetXSQLDA;
210	–	property Count: Integer read FCount write SetCount;
211	–	property Modified: Boolean read GetModified;
212	–	property RecordSize: Integer read GetRecordSize;
213	–	property Vars[Idx: Integer]: TIBXSQLVAR read GetXSQLVAR; default;
214	–	property UniqueRelationName: String read FUniqueRelationName;
215	–	end;
216	–
61		{ TIBBatch }
62
63		TIBBatch = class(TObject)
64		protected
65		FFilename: String;
66	<	FColumns: TIBXSQLDA;
67	<	FParams: TIBXSQLDA;
66	>	FColumns: IResults;
67	>	FParams: ISQLParams;
68		public
69		procedure ReadyFile; virtual; abstract;
70	<	property Columns: TIBXSQLDA read FColumns;
70	>	property Columns: IResults read FColumns;
71		property Filename: String read FFilename write FFilename;
72	<	property Params: TIBXSQLDA read FParams;
72	>	property Params: ISQLParams read FParams;
73		end;
74
75		TIBBatchInput = class(TIBBatch)
#	Line 311 | Line 155 | type
155		end;
156
157		{ TIBSQL }
314	–	TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
315	–	SQLUpdate, SQLDelete, SQLDDL,
316	–	SQLGetSegment, SQLPutSegment,
317	–	SQLExecProcedure, SQLStartTransaction,
318	–	SQLCommit, SQLRollback,
319	–	SQLSelectForUpdate, SQLSetGenerator);
158
159		TIBSQL = class(TComponent)
160		private
161	<	FIBLoaded: Boolean;
161	>	FMetaData: IMetaData;
162	>	FSQLParams: ISQLParams;
163	>	FStatement: IStatement;
164	>	FOnSQLChanged: TNotifyEvent;
165		FUniqueParamNames: Boolean;
166	+	FBOF: boolean;
167	+	FEOF: boolean;
168		function GetFieldCount: integer;
169	+	function GetOpen: Boolean;
170	+	function GetPrepared: Boolean;
171	+	function GetSQLStatementType: TIBSQLStatementTypes;
172		procedure SetUniqueParamNames(AValue: Boolean);
173		protected
174		FBase: TIBBase;
175	<	FBOF,                          { At BOF? }
330	<	FEOF,                          { At EOF? }
331	<	FGoToFirstRecordOnExecute,     { Automatically position record on first record after executing }
332	<	FOpen,                         { Is a cursor open? }
333	<	FPrepared: Boolean;            { Has the query been prepared? }
175	>	FGoToFirstRecordOnExecute: boolean;     { Automatically position record on first record after executing }
176		FRecordCount: Integer;         { How many records have been read so far? }
335	–	FCursor: String;               { Cursor name...}
336	–	FHandle: TISC_STMT_HANDLE;     { Once prepared, this accesses the SQL Query }
177		FOnSQLChanging: TNotifyEvent;  { Call this when the SQL is changing }
178		FSQL: TStrings;                { SQL Query (by user) }
179		FParamCheck: Boolean;          { Check for parameters? (just like TQuery) }
180	<	FProcessedSQL: TStrings;       { SQL Query (pre-processed for param labels) }
181	<	FSQLParams,                    { Any parameters to the query }
342	<	FSQLRecord: TIBXSQLDA;         { The current record }
343	<	FSQLType: TIBSQLTypes;         { Select, update, delete, insert, create, alter, etc...}
180	>	FResults: IResults;            {Single row results from exec}
181	>	FResultSet: IResultSet;        {Multi-row results from open cursor}
182		FGenerateParamNames: Boolean;  { Auto generate param names ?}
183		procedure DoBeforeDatabaseDisconnect(Sender: TObject);
184		function GetDatabase: TIBDatabase;
347	–	function GetDBHandle: PISC_DB_HANDLE;
185		function GetEOF: Boolean;
186	<	function GetFields(const Idx: Integer): TIBXSQLVAR;
186	>	function GetFields(const Idx: Integer): ISQLData;
187		function GetFieldIndex(FieldName: String): Integer;
188		function GetPlan: String;
189		function GetRecordCount: Integer;
190		function GetRowsAffected: Integer;
191	<	function GetSQLParams: TIBXSQLDA;
191	>	function GetSQLParams: ISQLParams;
192		function GetTransaction: TIBTransaction;
356	–	function GetTRHandle: PISC_TR_HANDLE;
357	–	procedure PreprocessSQL;
193		procedure SetDatabase(Value: TIBDatabase);
194		procedure SetSQL(Value: TStrings);
195		procedure SetTransaction(Value: TIBTransaction);
196		procedure SQLChanging(Sender: TObject);
197	<	procedure BeforeTransactionEnd(Sender: TObject);
197	>	procedure SQLChanged(Sender: TObject);
198	>	procedure BeforeTransactionEnd(Sender: TObject; Action: TTransactionAction);
199		public
200		constructor Create(AOwner: TComponent); override;
201		destructor Destroy; override;
202		procedure BatchInput(InputObject: TIBBatchInput);
203		procedure BatchOutput(OutputObject: TIBBatchOutput);
368	–	function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
204		procedure CheckClosed;           { raise error if query is not closed. }
205		procedure CheckOpen;             { raise error if query is not open.}
206		procedure CheckValidStatement;   { raise error if statement is invalid.}
207		procedure Close;
373	–	function Current: TIBXSQLDA;
208		procedure ExecQuery;
209	<	function FieldByName(FieldName: String): TIBXSQLVAR;
210	<	function ParamByName(ParamName: String): TIBXSQLVAR;
209	>	function HasField(FieldName: String): boolean;
210	>	function FieldByName(FieldName: String): ISQLData;
211	>	function ParamByName(ParamName: String): ISQLParam;
212		procedure FreeHandle;
213	<	function Next: TIBXSQLDA;
213	>	function Next: boolean;
214		procedure Prepare;
215		function GetUniqueRelationName: String;
216		property Bof: Boolean read FBOF;
382	–	property DBHandle: PISC_DB_HANDLE read GetDBHandle;
217		property Eof: Boolean read GetEOF;
218	<	property Fields[const Idx: Integer]: TIBXSQLVAR read GetFields;
218	>	property Current: IResults read FResults;
219	>	property Fields[const Idx: Integer]: ISQLData read GetFields; default;
220		property FieldIndex[FieldName: String]: Integer read GetFieldIndex;
221		property FieldCount: integer read GetFieldCount;
222	<	property Open: Boolean read FOpen;
223	<	property Params: TIBXSQLDA read GetSQLParams;
222	>	property Open: Boolean read GetOpen;
223	>	property Params: ISQLParams read GetSQLParams;
224		property Plan: String read GetPlan;
225	<	property Prepared: Boolean read FPrepared;
225	>	property Prepared: Boolean read GetPrepared;
226		property RecordCount: Integer read GetRecordCount;
227		property RowsAffected: Integer read GetRowsAffected;
228	<	property SQLType: TIBSQLTypes read FSQLType;
394	<	property TRHandle: PISC_TR_HANDLE read GetTRHandle;
395	<	property Handle: TISC_STMT_HANDLE read FHandle;
228	>	property SQLStatementType: TIBSQLStatementTypes read GetSQLStatementType;
229		property UniqueRelationName: String read GetUniqueRelationName;
230	+	property Statement: IStatement read FStatement;
231	+	property MetaData: IMetaData read FMetaData;
232		published
233		property Database: TIBDatabase read GetDatabase write SetDatabase;
234		property GenerateParamNames: Boolean read FGenerateParamNames write FGenerateParamNames;
#	Line 405 | Line 240 | type
240		property SQL: TStrings read FSQL write SetSQL;
241		property Transaction: TIBTransaction read GetTransaction write SetTransaction;
242		property OnSQLChanging: TNotifyEvent read FOnSQLChanging write FOnSQLChanging;
243	+	property OnSQLChanged: TNotifyEvent read FOnSQLChanged write FOnSQLChanged;
244		end;
245
246	+	procedure IBAlloc(var P; OldSize, NewSize: Integer);
247	+
248		implementation
249
250		uses
251	<	IBIntf, IBBlob, Variants , IBSQLMonitor;
251	>	Variants, IBSQLMonitor, FBMessages, IBCustomDataSet;
252
253	<	{ TIBXSQLVAR }
416	<	constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
417	<	begin
418	<	inherited Create;
419	<	FParent := Parent;
420	<	FSQL := Query;
421	<	end;
422	<
423	<	procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
253	>	procedure IBAlloc(var P; OldSize, NewSize: Integer);
254		var
425	–	szBuff: PChar;
426	–	s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
427	–	bSourceBlob, bDestBlob: Boolean;
428	–	iSegs: Int64;
429	–	iMaxSeg: Int64;
430	–	iSize: Int64;
431	–	iBlobType: Short;
432	–	begin
433	–	szBuff := nil;
434	–	bSourceBlob := True;
435	–	bDestBlob := True;
436	–	s_bhandle := nil;
437	–	d_bhandle := nil;
438	–	try
439	–	if (Source.IsNull) then
440	–	begin
441	–	IsNull := True;
442	–	exit;
443	–	end
444	–	else
445	–	if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
446	–	(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
447	–	exit; { arrays not supported }
448	–	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
449	–	(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
450	–	begin
451	–	AsXSQLVAR := Source.AsXSQLVAR;
452	–	exit;
453	–	end
454	–	else
455	–	if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
456	–	begin
457	–	szBuff := nil;
458	–	IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
459	–	Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
460	–	bSourceBlob := False;
461	–	iSize := Source.FXSQLVAR^.sqllen;
462	–	end
463	–	else
464	–	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
465	–	bDestBlob := False;
466	–
467	–	if bSourceBlob then
468	–	begin
469	–	{ read the blob }
470	–	Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
471	–	Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
472	–	0, nil), True);
473	–	try
474	–	IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
475	–	iBlobType);
476	–	szBuff := nil;
477	–	IBAlloc(szBuff, 0, iSize);
478	–	IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
479	–	finally
480	–	Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
481	–	end;
482	–	end;
483	–
484	–	if bDestBlob then
485	–	begin
486	–	{ write the blob }
487	–	FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
488	–	FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
489	–	0, nil), True);
490	–	try
491	–	IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
492	–	isNull := false
493	–	finally
494	–	FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
495	–	end;
496	–	end
497	–	else
498	–	begin
499	–	{ just copy the buffer }
500	–	FXSQLVAR.sqltype := SQL_TEXT;
501	–	FXSQLVAR.sqllen := iSize;
502	–	IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
503	–	Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
504	–	end;
505	–	finally
506	–	FreeMem(szBuff);
507	–	end;
508	–	end;
509	–
510	–	function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
511	–	var
512	–	Scaling : Int64;
255		i: Integer;
514	–	Val: Double;
515	–	begin
516	–	Scaling := 1; Val := Value;
517	–	if Scale > 0 then
518	–	begin
519	–	for i := 1 to Scale do
520	–	Scaling := Scaling * 10;
521	–	result := Val * Scaling;
522	–	end
523	–	else
524	–	if Scale < 0 then
525	–	begin
526	–	for i := -1 downto Scale do
527	–	Scaling := Scaling * 10;
528	–	result := Val / Scaling;
529	–	end
530	–	else
531	–	result := Val;
532	–	end;
533	–
534	–	function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
535	–	var
536	–	Scaling : Int64;
537	–	i: Integer;
538	–	Val: Int64;
539	–	begin
540	–	Scaling := 1; Val := Value;
541	–	if Scale > 0 then begin
542	–	for i := 1 to Scale do Scaling := Scaling * 10;
543	–	result := Val * Scaling;
544	–	end else if Scale < 0 then begin
545	–	for i := -1 downto Scale do Scaling := Scaling * 10;
546	–	result := Val div Scaling;
547	–	end else
548	–	result := Val;
549	–	end;
550	–
551	–	function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
552	–	var
553	–	Scaling : Int64;
554	–	i : Integer;
555	–	FractionText, PadText, CurrText: string;
556	–	begin
557	–	Result := 0;
558	–	Scaling := 1;
559	–	if Scale > 0 then
560	–	begin
561	–	for i := 1 to Scale do
562	–	Scaling := Scaling * 10;
563	–	result := Value * Scaling;
564	–	end
565	–	else
566	–	if Scale < 0 then
567	–	begin
568	–	for i := -1 downto Scale do
569	–	Scaling := Scaling * 10;
570	–	FractionText := IntToStr(abs(Value mod Scaling));
571	–	for i := Length(FractionText) to -Scale -1 do
572	–	PadText := '0' + PadText;
573	–	if Value < 0 then
574	–	CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
575	–	else
576	–	CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
577	–	try
578	–	result := StrToCurr(CurrText);
579	–	except
580	–	on E: Exception do
581	–	IBError(ibxeInvalidDataConversion, [nil]);
582	–	end;
583	–	end
584	–	else
585	–	result := Value;
586	–	end;
587	–
588	–	function TIBXSQLVAR.GetAsCurrency: Currency;
589	–	begin
590	–	result := 0;
591	–	if FSQL.Database.SQLDialect < 3 then
592	–	result := GetAsDouble
593	–	else begin
594	–	if not IsNull then
595	–	case FXSQLVAR^.sqltype and (not 1) of
596	–	SQL_TEXT, SQL_VARYING: begin
597	–	try
598	–	result := StrtoCurr(AsString);
599	–	except
600	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
601	–	end;
602	–	end;
603	–	SQL_SHORT:
604	–	result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
605	–	FXSQLVAR^.sqlscale);
606	–	SQL_LONG:
607	–	result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
608	–	FXSQLVAR^.sqlscale);
609	–	SQL_INT64:
610	–	result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
611	–	FXSQLVAR^.sqlscale);
612	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
613	–	result := Trunc(AsDouble);
614	–	else
615	–	IBError(ibxeInvalidDataConversion, [nil]);
616	–	end;
617	–	end;
618	–	end;
619	–
620	–	function TIBXSQLVAR.GetAsInt64: Int64;
621	–	begin
622	–	result := 0;
623	–	if not IsNull then
624	–	case FXSQLVAR^.sqltype and (not 1) of
625	–	SQL_TEXT, SQL_VARYING: begin
626	–	try
627	–	result := StrToInt64(AsString);
628	–	except
629	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
630	–	end;
631	–	end;
632	–	SQL_SHORT:
633	–	result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
634	–	FXSQLVAR^.sqlscale);
635	–	SQL_LONG:
636	–	result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
637	–	FXSQLVAR^.sqlscale);
638	–	SQL_INT64:
639	–	result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
640	–	FXSQLVAR^.sqlscale);
641	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
642	–	result := Trunc(AsDouble);
643	–	else
644	–	IBError(ibxeInvalidDataConversion, [nil]);
645	–	end;
646	–	end;
647	–
648	–	function TIBXSQLVAR.GetAsDateTime: TDateTime;
649	–	var
650	–	tm_date: TCTimeStructure;
651	–	msecs: word;
652	–	begin
653	–	result := 0;
654	–	if not IsNull then
655	–	case FXSQLVAR^.sqltype and (not 1) of
656	–	SQL_TEXT, SQL_VARYING: begin
657	–	try
658	–	result := StrToDate(AsString);
659	–	except
660	–	on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
661	–	end;
662	–	end;
663	–	SQL_TYPE_DATE: begin
664	–	isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
665	–	try
666	–	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
667	–	Word(tm_date.tm_mday));
668	–	except
669	–	on E: EConvertError do begin
670	–	IBError(ibxeInvalidDataConversion, [nil]);
671	–	end;
672	–	end;
673	–	end;
674	–	SQL_TYPE_TIME: begin
675	–	isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
676	–	try
677	–	msecs :=  (PISC_TIME(FXSQLVAR^.sqldata)^ mod 10000) div 10;
678	–	result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
679	–	Word(tm_date.tm_sec), msecs)
680	–	except
681	–	on E: EConvertError do begin
682	–	IBError(ibxeInvalidDataConversion, [nil]);
683	–	end;
684	–	end;
685	–	end;
686	–	SQL_TIMESTAMP: begin
687	–	isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
688	–	try
689	–	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
690	–	Word(tm_date.tm_mday));
691	–	msecs := (PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time mod 10000) div 10;
692	–	if result >= 0 then
693	–	result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
694	–	Word(tm_date.tm_sec), msecs)
695	–	else
696	–	result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
697	–	Word(tm_date.tm_sec), msecs)
698	–	except
699	–	on E: EConvertError do begin
700	–	IBError(ibxeInvalidDataConversion, [nil]);
701	–	end;
702	–	end;
703	–	end;
704	–	else
705	–	IBError(ibxeInvalidDataConversion, [nil]);
706	–	end;
707	–	end;
708	–
709	–	function TIBXSQLVAR.GetAsDouble: Double;
710	–	begin
711	–	result := 0;
712	–	if not IsNull then begin
713	–	case FXSQLVAR^.sqltype and (not 1) of
714	–	SQL_TEXT, SQL_VARYING: begin
715	–	try
716	–	result := StrToFloat(AsString);
717	–	except
718	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
719	–	end;
720	–	end;
721	–	SQL_SHORT:
722	–	result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
723	–	FXSQLVAR^.sqlscale);
724	–	SQL_LONG:
725	–	result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
726	–	FXSQLVAR^.sqlscale);
727	–	SQL_INT64:
728	–	result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
729	–	SQL_FLOAT:
730	–	result := PFloat(FXSQLVAR^.sqldata)^;
731	–	SQL_DOUBLE, SQL_D_FLOAT:
732	–	result := PDouble(FXSQLVAR^.sqldata)^;
733	–	else
734	–	IBError(ibxeInvalidDataConversion, [nil]);
735	–	end;
736	–	if  FXSQLVAR^.sqlscale <> 0 then
737	–	result :=
738	–	StrToFloat(FloatToStrF(result, fffixed, 15,
739	–	Abs(FXSQLVAR^.sqlscale) ));
740	–	end;
741	–	end;
742	–
743	–	function TIBXSQLVAR.GetAsFloat: Float;
744	–	begin
745	–	result := 0;
746	–	try
747	–	result := AsDouble;
748	–	except
749	–	on E: EOverflow do
750	–	IBError(ibxeInvalidDataConversion, [nil]);
751	–	end;
752	–	end;
753	–
754	–	function TIBXSQLVAR.GetAsLong: Long;
755	–	begin
756	–	result := 0;
757	–	if not IsNull then
758	–	case FXSQLVAR^.sqltype and (not 1) of
759	–	SQL_TEXT, SQL_VARYING: begin
760	–	try
761	–	result := StrToInt(AsString);
762	–	except
763	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
764	–	end;
765	–	end;
766	–	SQL_SHORT:
767	–	result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
768	–	FXSQLVAR^.sqlscale));
769	–	SQL_LONG:
770	–	result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
771	–	FXSQLVAR^.sqlscale));
772	–	SQL_INT64:
773	–	result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
774	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
775	–	result := Trunc(AsDouble);
776	–	else
777	–	IBError(ibxeInvalidDataConversion, [nil]);
778	–	end;
779	–	end;
780	–
781	–	function TIBXSQLVAR.GetAsPointer: Pointer;
782	–	begin
783	–	if not IsNull then
784	–	result := FXSQLVAR^.sqldata
785	–	else
786	–	result := nil;
787	–	end;
788	–
789	–	function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
790	–	begin
791	–	result.gds_quad_high := 0;
792	–	result.gds_quad_low := 0;
793	–	if not IsNull then
794	–	case FXSQLVAR^.sqltype and (not 1) of
795	–	SQL_BLOB, SQL_ARRAY, SQL_QUAD:
796	–	result := PISC_QUAD(FXSQLVAR^.sqldata)^;
797	–	else
798	–	IBError(ibxeInvalidDataConversion, [nil]);
799	–	end;
800	–	end;
801	–
802	–	function TIBXSQLVAR.GetAsShort: Short;
803	–	begin
804	–	result := 0;
805	–	try
806	–	result := AsLong;
807	–	except
808	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
809	–	end;
810	–	end;
811	–
812	–
813	–	function TIBXSQLVAR.GetAsString: String;
814	–	var
815	–	sz: PChar;
816	–	str_len: Integer;
817	–	ss: TStringStream;
818	–	begin
819	–	result := '';
820	–	{ Check null, if so return a default string }
821	–	if not IsNull then
822	–	case FXSQLVar^.sqltype and (not 1) of
823	–	SQL_ARRAY:
824	–	result := '(Array)'; {do not localize}
825	–	SQL_BLOB: begin
826	–	ss := TStringStream.Create('');
827	–	try
828	–	SaveToStream(ss);
829	–	result := ss.DataString;
830	–	finally
831	–	ss.Free;
832	–	end;
833	–	end;
834	–	SQL_TEXT, SQL_VARYING: begin
835	–	sz := FXSQLVAR^.sqldata;
836	–	if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
837	–	str_len := FXSQLVar^.sqllen
838	–	else begin
839	–	str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
840	–	Inc(sz, 2);
841	–	end;
842	–	SetString(result, sz, str_len);
843	–	if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
844	–	result := TrimRight(result);
845	–	end;
846	–	SQL_TYPE_DATE:
847	–	case FSQL.Database.SQLDialect of
848	–	1 : result := DateTimeToStr(AsDateTime);
849	–	3 : result := DateToStr(AsDateTime);
850	–	end;
851	–	SQL_TYPE_TIME :
852	–	result := TimeToStr(AsDateTime);
853	–	SQL_TIMESTAMP:
854	–	result := DateTimeToStr(AsDateTime);
855	–	SQL_SHORT, SQL_LONG:
856	–	if FXSQLVAR^.sqlscale = 0 then
857	–	result := IntToStr(AsLong)
858	–	else if FXSQLVAR^.sqlscale >= (-4) then
859	–	result := CurrToStr(AsCurrency)
860	–	else
861	–	result := FloatToStr(AsDouble);
862	–	SQL_INT64:
863	–	if FXSQLVAR^.sqlscale = 0 then
864	–	result := IntToStr(AsInt64)
865	–	else if FXSQLVAR^.sqlscale >= (-4) then
866	–	result := CurrToStr(AsCurrency)
867	–	else
868	–	result := FloatToStr(AsDouble);
869	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
870	–	result := FloatToStr(AsDouble);
871	–	else
872	–	IBError(ibxeInvalidDataConversion, [nil]);
873	–	end;
874	–	end;
875	–
876	–	function TIBXSQLVAR.GetAsVariant: Variant;
877	–	begin
878	–	if IsNull then
879	–	result := NULL
880	–	{ Check null, if so return a default string }
881	–	else case FXSQLVar^.sqltype and (not 1) of
882	–	SQL_ARRAY:
883	–	result := '(Array)'; {do not localize}
884	–	SQL_BLOB:
885	–	result := '(Blob)'; {do not localize}
886	–	SQL_TEXT, SQL_VARYING:
887	–	result := AsString;
888	–	SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
889	–	result := AsDateTime;
890	–	SQL_SHORT, SQL_LONG:
891	–	if FXSQLVAR^.sqlscale = 0 then
892	–	result := AsLong
893	–	else if FXSQLVAR^.sqlscale >= (-4) then
894	–	result := AsCurrency
895	–	else
896	–	result := AsDouble;
897	–	SQL_INT64:
898	–	if FXSQLVAR^.sqlscale = 0 then
899	–	IBError(ibxeInvalidDataConversion, [nil])
900	–	else if FXSQLVAR^.sqlscale >= (-4) then
901	–	result := AsCurrency
902	–	else
903	–	result := AsDouble;
904	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
905	–	result := AsDouble;
906	–	else
907	–	IBError(ibxeInvalidDataConversion, [nil]);
908	–	end;
909	–	end;
910	–
911	–	function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
912	–	begin
913	–	result := FXSQLVAR;
914	–	end;
915	–
916	–	function TIBXSQLVAR.GetIsNull: Boolean;
917	–	begin
918	–	result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
919	–	end;
920	–
921	–	function TIBXSQLVAR.GetIsNullable: Boolean;
922	–	begin
923	–	result := (FXSQLVAR^.sqltype and 1 = 1);
924	–	end;
925	–
926	–	procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
927	–	var
928	–	fs: TFileStream;
929	–	begin
930	–	fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
931	–	try
932	–	LoadFromStream(fs);
933	–	finally
934	–	fs.Free;
935	–	end;
936	–	end;
937	–
938	–	procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
939	–	var
940	–	bs: TIBBlobStream;
941	–	begin
942	–	bs := TIBBlobStream.Create;
943	–	try
944	–	bs.Mode := bmWrite;
945	–	bs.Database := FSQL.Database;
946	–	bs.Transaction := FSQL.Transaction;
947	–	Stream.Seek(0, soFromBeginning);
948	–	bs.LoadFromStream(Stream);
949	–	bs.Finalize;
950	–	AsQuad := bs.BlobID;
951	–	finally
952	–	bs.Free;
953	–	end;
954	–	end;
955	–
956	–	procedure TIBXSQLVAR.SaveToFile(const FileName: String);
957	–	var
958	–	fs: TFileStream;
959	–	begin
960	–	fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
961	–	try
962	–	SaveToStream(fs);
963	–	finally
964	–	fs.Free;
965	–	end;
966	–	end;
967	–
968	–	procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
969	–	var
970	–	bs: TIBBlobStream;
971	–	begin
972	–	bs := TIBBlobStream.Create;
973	–	try
974	–	bs.Mode := bmRead;
975	–	bs.Database := FSQL.Database;
976	–	bs.Transaction := FSQL.Transaction;
977	–	bs.BlobID := AsQuad;
978	–	bs.SaveToStream(Stream);
979	–	finally
980	–	bs.Free;
981	–	end;
982	–	end;
983	–
984	–	function TIBXSQLVAR.GetSize: Integer;
985	–	begin
986	–	result := FXSQLVAR^.sqllen;
987	–	end;
988	–
989	–	function TIBXSQLVAR.GetSQLType: Integer;
990	–	begin
991	–	result := FXSQLVAR^.sqltype and (not 1);
992	–	end;
993	–
994	–	procedure TIBXSQLVAR.xSetAsCurrency(Value: Currency);
995	–	begin
996	–	if IsNullable then
997	–	IsNull := False;
998	–	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
999	–	FXSQLVAR^.sqlscale := -4;
1000	–	FXSQLVAR^.sqllen := SizeOf(Int64);
1001	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1002	–	PCurrency(FXSQLVAR^.sqldata)^ := Value;
1003	–	FModified := True;
1004	–	end;
1005	–
1006	–	procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
1007	–	var
1008	–	i: Integer;
1009	–	begin
1010	–	if FSQL.Database.SQLDialect < 3 then
1011	–	AsDouble := Value
1012	–	else
1013	–	begin
1014	–
1015	–	if FUniqueName then
1016	–	xSetAsCurrency(Value)
1017	–	else
1018	–	for i := 0 to FParent.FCount - 1 do
1019	–	if FParent[i].FName = FName then
1020	–	FParent[i].xSetAsCurrency(Value);
1021	–	end;
1022	–	end;
1023	–
1024	–	procedure TIBXSQLVAR.xSetAsInt64(Value: Int64);
1025	–	begin
1026	–	if IsNullable then
1027	–	IsNull := False;
1028	–
1029	–	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1030	–	FXSQLVAR^.sqlscale := 0;
1031	–	FXSQLVAR^.sqllen := SizeOf(Int64);
1032	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1033	–	PInt64(FXSQLVAR^.sqldata)^ := Value;
1034	–	FModified := True;
1035	–	end;
1036	–
1037	–	procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
1038	–	var
1039	–	i: Integer;
1040	–	begin
1041	–	if FUniqueName then
1042	–	xSetAsInt64(Value)
1043	–	else
1044	–	for i := 0 to FParent.FCount - 1 do
1045	–	if FParent[i].FName = FName then
1046	–	FParent[i].xSetAsInt64(Value);
1047	–	end;
1048	–
1049	–	procedure TIBXSQLVAR.xSetAsDate(Value: TDateTime);
1050	–	var
1051	–	tm_date: TCTimeStructure;
1052	–	Yr, Mn, Dy: Word;
1053	–	begin
1054	–	if IsNullable then
1055	–	IsNull := False;
1056	–
1057	–	FXSQLVAR^.sqltype := SQL_TYPE_DATE or (FXSQLVAR^.sqltype and 1);
1058	–	DecodeDate(Value, Yr, Mn, Dy);
1059	–	with tm_date do begin
1060	–	tm_sec := 0;
1061	–	tm_min := 0;
1062	–	tm_hour := 0;
1063	–	tm_mday := Dy;
1064	–	tm_mon := Mn - 1;
1065	–	tm_year := Yr - 1900;
1066	–	end;
1067	–	FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
1068	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1069	–	isc_encode_sql_date(@tm_date, PISC_DATE(FXSQLVAR^.sqldata));
1070	–	FModified := True;
1071	–	end;
1072	–
1073	–	procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
1074	–	var
1075	–	i: Integer;
1076	–	begin
1077	–	if FSQL.Database.SQLDialect < 3 then
1078	–	begin
1079	–	AsDateTime := Value;
1080	–	exit;
1081	–	end;
1082	–
1083	–	if FUniqueName then
1084	–	xSetAsDate(Value)
1085	–	else
1086	–	for i := 0 to FParent.FCount - 1 do
1087	–	if FParent[i].FName = FName then
1088	–	FParent[i].xSetAsDate(Value);
1089	–	end;
1090	–
1091	–	procedure TIBXSQLVAR.xSetAsTime(Value: TDateTime);
1092	–	var
1093	–	tm_date: TCTimeStructure;
1094	–	Hr, Mt, S, Ms: Word;
1095	–	begin
1096	–	if IsNullable then
1097	–	IsNull := False;
1098	–
1099	–	FXSQLVAR^.sqltype := SQL_TYPE_TIME or (FXSQLVAR^.sqltype and 1);
1100	–	DecodeTime(Value, Hr, Mt, S, Ms);
1101	–	with tm_date do begin
1102	–	tm_sec := S;
1103	–	tm_min := Mt;
1104	–	tm_hour := Hr;
1105	–	tm_mday := 0;
1106	–	tm_mon := 0;
1107	–	tm_year := 0;
1108	–	end;
1109	–	FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
1110	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1111	–	isc_encode_sql_time(@tm_date, PISC_TIME(FXSQLVAR^.sqldata));
1112	–	if Ms > 0 then
1113	–	Inc(PISC_TIME(FXSQLVAR^.sqldata)^,Ms*10);
1114	–	FModified := True;
1115	–	end;
1116	–
1117	–	procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
1118	–	var
1119	–	i: Integer;
1120	–	begin
1121	–	if FSQL.Database.SQLDialect < 3 then
1122	–	begin
1123	–	AsDateTime := Value;
1124	–	exit;
1125	–	end;
1126	–
1127	–	if FUniqueName then
1128	–	xSetAsTime(Value)
1129	–	else
1130	–	for i := 0 to FParent.FCount - 1 do
1131	–	if FParent[i].FName = FName then
1132	–	FParent[i].xSetAsTime(Value);
1133	–	end;
1134	–
1135	–	procedure TIBXSQLVAR.xSetAsDateTime(Value: TDateTime);
1136	–	var
1137	–	tm_date: TCTimeStructure;
1138	–	Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
1139	–	begin
1140	–	if IsNullable then
1141	–	IsNull := False;
1142	–
1143	–	FXSQLVAR^.sqltype := SQL_TIMESTAMP or (FXSQLVAR^.sqltype and 1);
1144	–	DecodeDate(Value, Yr, Mn, Dy);
1145	–	DecodeTime(Value, Hr, Mt, S, Ms);
1146	–	with tm_date do begin
1147	–	tm_sec := S;
1148	–	tm_min := Mt;
1149	–	tm_hour := Hr;
1150	–	tm_mday := Dy;
1151	–	tm_mon := Mn - 1;
1152	–	tm_year := Yr - 1900;
1153	–	end;
1154	–	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1155	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1156	–	isc_encode_date(@tm_date, PISC_QUAD(FXSQLVAR^.sqldata));
1157	–	if Ms > 0 then
1158	–	Inc(PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time,Ms*10);
1159	–	FModified := True;
1160	–	end;
1161	–
1162	–	procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
1163	–	var
1164	–	i: Integer;
1165	–	begin
1166	–	if FUniqueName then
1167	–	xSetAsDateTime(value)
1168	–	else
1169	–	for i := 0 to FParent.FCount - 1 do
1170	–	if FParent[i].FName = FName then
1171	–	FParent[i].xSetAsDateTime(Value);
1172	–	end;
1173	–
1174	–	procedure TIBXSQLVAR.xSetAsDouble(Value: Double);
1175	–	begin
1176	–	if IsNullable then
1177	–	IsNull := False;
1178	–
1179	–	FXSQLVAR^.sqltype := SQL_DOUBLE or (FXSQLVAR^.sqltype and 1);
1180	–	FXSQLVAR^.sqllen := SizeOf(Double);
1181	–	FXSQLVAR^.sqlscale := 0;
1182	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1183	–	PDouble(FXSQLVAR^.sqldata)^ := Value;
1184	–	FModified := True;
1185	–	end;
1186	–
1187	–	procedure TIBXSQLVAR.SetAsDouble(Value: Double);
1188	–	var
1189	–	i: Integer;
1190	–	begin
1191	–	if FUniqueName then
1192	–	xSetAsDouble(Value)
1193	–	else
1194	–	for i := 0 to FParent.FCount - 1 do
1195	–	if FParent[i].FName = FName then
1196	–	FParent[i].xSetAsDouble(Value);
1197	–	end;
1198	–
1199	–	procedure TIBXSQLVAR.xSetAsFloat(Value: Float);
1200	–	begin
1201	–	if IsNullable then
1202	–	IsNull := False;
1203	–
1204	–	FXSQLVAR^.sqltype := SQL_FLOAT or (FXSQLVAR^.sqltype and 1);
1205	–	FXSQLVAR^.sqllen := SizeOf(Float);
1206	–	FXSQLVAR^.sqlscale := 0;
1207	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1208	–	PSingle(FXSQLVAR^.sqldata)^ := Value;
1209	–	FModified := True;
1210	–	end;
1211	–
1212	–	procedure TIBXSQLVAR.SetAsFloat(Value: Float);
1213	–	var
1214	–	i: Integer;
1215	–	begin
1216	–	if FUniqueName then
1217	–	xSetAsFloat(Value)
1218	–	else
1219	–	for i := 0 to FParent.FCount - 1 do
1220	–	if FParent[i].FName = FName then
1221	–	FParent[i].xSetAsFloat(Value);
1222	–	end;
1223	–
1224	–	procedure TIBXSQLVAR.xSetAsLong(Value: Long);
1225	–	begin
1226	–	if IsNullable then
1227	–	IsNull := False;
1228	–
1229	–	FXSQLVAR^.sqltype := SQL_LONG or (FXSQLVAR^.sqltype and 1);
1230	–	FXSQLVAR^.sqllen := SizeOf(Long);
1231	–	FXSQLVAR^.sqlscale := 0;
1232	–	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1233	–	PLong(FXSQLVAR^.sqldata)^ := Value;
1234	–	FModified := True;
1235	–	end;
1236	–
1237	–	procedure TIBXSQLVAR.SetAsLong(Value: Long);
1238	–	var
1239	–	i: Integer;
1240	–	begin
1241	–	if FUniqueName then
1242	–	xSetAsLong(Value)
1243	–	else
1244	–	for i := 0 to FParent.FCount - 1 do
1245	–	if FParent[i].FName = FName then
1246	–	FParent[i].xSetAsLong(Value);
1247	–	end;
1248	–
1249	–	procedure TIBXSQLVAR.xSetAsPointer(Value: Pointer);
1250	–	begin
1251	–	if IsNullable and (Value = nil) then
1252	–	IsNull := True
1253	–	else begin
1254	–	IsNull := False;
1255	–	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1256	–	Move(Value^, FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1257	–	end;
1258	–	FModified := True;
1259	–	end;
1260	–
1261	–	procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
1262	–	var
1263	–	i: Integer;
1264	–	begin
1265	–	if FUniqueName then
1266	–	xSetAsPointer(Value)
1267	–	else
1268	–	for i := 0 to FParent.FCount - 1 do
1269	–	if FParent[i].FName = FName then
1270	–	FParent[i].xSetAsPointer(Value);
1271	–	end;
1272	–
1273	–	procedure TIBXSQLVAR.xSetAsQuad(Value: TISC_QUAD);
256		begin
257	<	if IsNullable then
258	<	IsNull := False;
1277	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
1278	<	(FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
1279	<	IBError(ibxeInvalidDataConversion, [nil]);
1280	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1281	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1282	<	PISC_QUAD(FXSQLVAR^.sqldata)^ := Value;
1283	<	FModified := True;
1284	<	end;
1285	<
1286	<	procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
1287	<	var
1288	<	i: Integer;
1289	<	begin
1290	<	if FUniqueName then
1291	<	xSetAsQuad(Value)
1292	<	else
1293	<	for i := 0 to FParent.FCount - 1 do
1294	<	if FParent[i].FName = FName then
1295	<	FParent[i].xSetAsQuad(Value);
1296	<	end;
1297	<
1298	<	procedure TIBXSQLVAR.xSetAsShort(Value: Short);
1299	<	begin
1300	<	if IsNullable then
1301	<	IsNull := False;
1302	<
1303	<	FXSQLVAR^.sqltype := SQL_SHORT or (FXSQLVAR^.sqltype and 1);
1304	<	FXSQLVAR^.sqllen := SizeOf(Short);
1305	<	FXSQLVAR^.sqlscale := 0;
1306	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1307	<	PShort(FXSQLVAR^.sqldata)^ := Value;
1308	<	FModified := True;
1309	<	end;
1310	<
1311	<	procedure TIBXSQLVAR.SetAsShort(Value: Short);
1312	<	var
1313	<	i: Integer;
1314	<	begin
1315	<	if FUniqueName then
1316	<	xSetAsShort(Value)
1317	<	else
1318	<	for i := 0 to FParent.FCount - 1 do
1319	<	if FParent[i].FName = FName then
1320	<	FParent[i].xSetAsShort(Value);
1321	<	end;
1322	<
1323	<	procedure TIBXSQLVAR.xSetAsString(Value: String);
1324	<	var
1325	<	stype: Integer;
1326	<	ss: TStringStream;
1327	<
1328	<	procedure SetStringValue;
1329	<	var
1330	<	i: Integer;
1331	<	begin
1332	<	if (FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
1333	<	(FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
1334	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen)
1335	<	else begin
1336	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1337	<	FXSQLVAR^.sqllen := Length(Value);
1338	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen + 1);
1339	<	if (Length(Value) > 0) then
1340	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1341	<	end;
1342	<	FModified := True;
1343	<	end;
1344	<
1345	<	begin
1346	<	if IsNullable then
1347	<	IsNull := False;
1348	<
1349	<	stype := FXSQLVAR^.sqltype and (not 1);
1350	<	if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
1351	<	SetStringValue
1352	<	else begin
1353	<	if (stype = SQL_BLOB) then
1354	<	begin
1355	<	ss := TStringStream.Create(Value);
1356	<	try
1357	<	LoadFromStream(ss);
1358	<	finally
1359	<	ss.Free;
1360	<	end;
1361	<	end
1362	<	else if Value = '' then
1363	<	IsNull := True
1364	<	else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
1365	<	(stype = SQL_TYPE_TIME) then
1366	<	xSetAsDateTime(StrToDateTime(Value))
1367	<	else
1368	<	SetStringValue;
1369	<	end;
1370	<	end;
1371	<
1372	<	procedure TIBXSQLVAR.SetAsString(Value: String);
1373	<	var
1374	<	i: integer;
1375	<	begin
1376	<	if FUniqueName then
1377	<	xSetAsString(Value)
1378	<	else
1379	<	for i := 0 to FParent.FCount - 1 do
1380	<	if FParent[i].FName = FName then
1381	<	FParent[i].xSetAsString(Value);
1382	<	end;
1383	<
1384	<	procedure TIBXSQLVAR.xSetAsVariant(Value: Variant);
1385	<	begin
1386	<	if VarIsNull(Value) then
1387	<	IsNull := True
1388	<	else case VarType(Value) of
1389	<	varEmpty, varNull:
1390	<	IsNull := True;
1391	<	varSmallint, varInteger, varByte,
1392	<	varWord, varShortInt:
1393	<	AsLong := Value;
1394	<	varInt64:
1395	<	AsInt64 := Value;
1396	<	varSingle, varDouble:
1397	<	AsDouble := Value;
1398	<	varCurrency:
1399	<	AsCurrency := Value;
1400	<	varBoolean:
1401	<	if Value then
1402	<	AsLong := ISC_TRUE
1403	<	else
1404	<	AsLong := ISC_FALSE;
1405	<	varDate:
1406	<	AsDateTime := Value;
1407	<	varOleStr, varString:
1408	<	AsString := Value;
1409	<	varArray:
1410	<	IBError(ibxeNotSupported, [nil]);
1411	<	varByRef, varDispatch, varError, varUnknown, varVariant:
1412	<	IBError(ibxeNotPermitted, [nil]);
1413	<	end;
1414	<	end;
1415	<
1416	<	procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
1417	<	var
1418	<	i: integer;
1419	<	begin
1420	<	if FUniqueName then
1421	<	xSetAsVariant(Value)
1422	<	else
1423	<	for i := 0 to FParent.FCount - 1 do
1424	<	if FParent[i].FName = FName then
1425	<	FParent[i].xSetAsVariant(Value);
1426	<	end;
1427	<
1428	<	procedure TIBXSQLVAR.xSetAsXSQLVAR(Value: PXSQLVAR);
1429	<	var
1430	<	sqlind: PShort;
1431	<	sqldata: PChar;
1432	<	local_sqllen: Integer;
1433	<	begin
1434	<	sqlind := FXSQLVAR^.sqlind;
1435	<	sqldata := FXSQLVAR^.sqldata;
1436	<	Move(Value^, FXSQLVAR^, SizeOf(TXSQLVAR));
1437	<	FXSQLVAR^.sqlind := sqlind;
1438	<	FXSQLVAR^.sqldata := sqldata;
1439	<	if (Value^.sqltype and 1 = 1) then
1440	<	begin
1441	<	if (FXSQLVAR^.sqlind = nil) then
1442	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1443	<	FXSQLVAR^.sqlind^ := Value^.sqlind^;
1444	<	end
1445	<	else
1446	<	if (FXSQLVAR^.sqlind <> nil) then
1447	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1448	<	if ((FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
1449	<	local_sqllen := FXSQLVAR^.sqllen + 2
1450	<	else
1451	<	local_sqllen := FXSQLVAR^.sqllen;
1452	<	FXSQLVAR^.sqlscale := Value^.sqlscale;
1453	<	IBAlloc(FXSQLVAR^.sqldata, 0, local_sqllen);
1454	<	Move(Value^.sqldata[0], FXSQLVAR^.sqldata[0], local_sqllen);
1455	<	FModified := True;
1456	<	end;
1457	<
1458	<	procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
1459	<	var
1460	<	i: Integer;
1461	<	begin
1462	<	if FUniqueName then
1463	<	xSetAsXSQLVAR(Value)
1464	<	else
1465	<	for i := 0 to FParent.FCount - 1 do
1466	<	if FParent[i].FName = FName then
1467	<	FParent[i].xSetAsXSQLVAR(Value);
1468	<	end;
1469	<
1470	<	procedure TIBXSQLVAR.xSetIsNull(Value: Boolean);
1471	<	begin
1472	<	if Value then
1473	<	begin
1474	<	if not IsNullable then
1475	<	IsNullable := True;
1476	<
1477	<	if Assigned(FXSQLVAR^.sqlind) then
1478	<	FXSQLVAR^.sqlind^ := -1;
1479	<	FModified := True;
1480	<	end
1481	<	else
1482	<	if ((not Value) and IsNullable) then
1483	<	begin
1484	<	if Assigned(FXSQLVAR^.sqlind) then
1485	<	FXSQLVAR^.sqlind^ := 0;
1486	<	FModified := True;
1487	<	end;
1488	<	end;
1489	<
1490	<	procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
1491	<	var
1492	<	i: Integer;
1493	<	begin
1494	<	if FUniqueName then
1495	<	xSetIsNull(Value)
1496	<	else
1497	<	for i := 0 to FParent.FCount - 1 do
1498	<	if FParent[i].FName = FName then
1499	<	FParent[i].xSetIsNull(Value);
1500	<	end;
1501	<
1502	<	procedure TIBXSQLVAR.xSetIsNullable(Value: Boolean);
1503	<	begin
1504	<	if (Value <> IsNullable) then
1505	<	begin
1506	<	if Value then
1507	<	begin
1508	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype or 1;
1509	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1510	<	end
1511	<	else
1512	<	begin
1513	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype and (not 1);
1514	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1515	<	end;
1516	<	end;
1517	<	end;
1518	<
1519	<	procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
1520	<	var
1521	<	i: Integer;
1522	<	begin
1523	<	if FUniqueName then
1524	<	xSetIsNullable(Value)
1525	<	else
1526	<	for i := 0 to FParent.FCount - 1 do
1527	<	if FParent[i].FName = FName then
1528	<	FParent[i].xSetIsNullable(Value);
1529	<	end;
1530	<
1531	<	procedure TIBXSQLVAR.Clear;
1532	<	begin
1533	<	IsNull := true;
1534	<	end;
1535	<
1536	<
1537	<	{ TIBXSQLDA }
1538	<	constructor TIBXSQLDA.Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
1539	<	begin
1540	<	inherited Create;
1541	<	FSQL := Query;
1542	<	FSize := 0;
1543	<	FUniqueRelationName := '';
1544	<	FInputSQLDA := sqldaType = daInput;
1545	<	end;
1546	<
1547	<	destructor TIBXSQLDA.Destroy;
1548	<	var
1549	<	i: Integer;
1550	<	begin
1551	<	if FXSQLDA <> nil then
1552	<	begin
1553	<	for i := 0 to FSize - 1 do
1554	<	begin
1555	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
1556	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
1557	<	FXSQLVARs[i].Free ;
1558	<	end;
1559	<	FreeMem(FXSQLDA);
1560	<	FXSQLDA := nil;
1561	<	FXSQLVARs := nil;
1562	<	end;
1563	<	inherited Destroy;
1564	<	end;
1565	<
1566	<	procedure TIBXSQLDA.SetParamName(FieldName: String; Idx: Integer;
1567	<	UniqueName: boolean);
1568	<	var
1569	<	fn: string;
1570	<	begin
1571	<	{$ifdef UseCaseSensitiveParamName}
1572	<	FXSQLVARs[Idx].FName := AnsiUpperCase(FieldName);
1573	<	{$else}
1574	<	FXSQLVARs[Idx].FName := FieldName;
1575	<	{$endif}
1576	<	FXSQLVARs[Idx].FIndex := Idx;
1577	<	FXSQLVARs[Idx].FUniqueName :=  UniqueName
1578	<	end;
1579	<
1580	<	function TIBXSQLDA.GetModified: Boolean;
1581	<	var
1582	<	i: Integer;
1583	<	begin
1584	<	result := False;
1585	<	for i := 0 to FCount - 1 do
1586	<	if FXSQLVARs[i].Modified then
1587	<	begin
1588	<	result := True;
1589	<	exit;
1590	<	end;
1591	<	end;
1592	<
1593	<	function TIBXSQLDA.GetRecordSize: Integer;
1594	<	begin
1595	<	result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
1596	<	end;
1597	<
1598	<	function TIBXSQLDA.GetXSQLDA: PXSQLDA;
1599	<	begin
1600	<	result := FXSQLDA;
1601	<	end;
1602	<
1603	<	function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
1604	<	begin
1605	<	if (Idx < 0) or (Idx >= FCount) then
1606	<	IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
1607	<	result := FXSQLVARs[Idx]
1608	<	end;
1609	<
1610	<	function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
1611	<	begin
1612	<	result := GetXSQLVARByName(Idx);
1613	<	if result = nil then
1614	<	IBError(ibxeFieldNotFound, [Idx]);
1615	<	end;
1616	<
1617	<	function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
1618	<	var
1619	<	s: String;
1620	<	i: Integer;
1621	<	begin
1622	<	{$ifdef ALLOWDIALECT3PARAMNAMES}
1623	<	s := FormatIdentifierValueNC(FSQL.Database.SQLDialect, Idx);
1624	<	{$else}
1625	<	{$ifdef UseCaseSensitiveParamName}
1626	<	s := AnsiUpperCase(Idx);
1627	<	{$else}
1628	<	s := Idx;
1629	<	{$endif}
1630	<	{$endif}
1631	<	for i := 0 to FCount - 1 do
1632	<	if Vars[i].FName = s then
1633	<	begin
1634	<	Result := FXSQLVARs[i];
1635	<	Exit;
1636	<	end;
1637	<	Result := nil;
1638	<	end;
1639	<
1640	<	procedure TIBXSQLDA.Initialize;
1641	<
1642	<	function VarByName(idx: string; limit: integer): TIBXSQLVAR;
1643	<	var
1644	<	k: integer;
1645	<	begin
1646	<	for k := 0 to limit do
1647	<	if FXSQLVARs[k].FName = idx then
1648	<	begin
1649	<	Result := FXSQLVARs[k];
1650	<	Exit;
1651	<	end;
1652	<	Result := nil;
1653	<	end;
1654	<
1655	<	var
1656	<	i, j, j_len: Integer;
1657	<	st: String;
1658	<	bUnique: Boolean;
1659	<	sBaseName: string;
1660	<	begin
1661	<	bUnique := True;
1662	<	if FXSQLDA <> nil then
1663	<	begin
1664	<	for i := 0 to FCount - 1 do
1665	<	begin
1666	<	with FXSQLVARs[i].Data^ do
1667	<	begin
1668	<
1669	<	{First get the unique relation name, if any}
1670	<
1671	<	if bUnique and (strpas(relname) <> '') then
1672	<	begin
1673	<	if FUniqueRelationName = '' then
1674	<	FUniqueRelationName := strpas(relname)
1675	<	else
1676	<	if strpas(relname) <> FUniqueRelationName then
1677	<	begin
1678	<	FUniqueRelationName := '';
1679	<	bUnique := False;
1680	<	end;
1681	<	end;
1682	<
1683	<	{If an output SQLDA then copy the aliasnames to the FName list. Ensure
1684	<	that they are all upper case only and disambiguated.
1685	<	}
1686	<
1687	<	if not FInputSQLDA then
1688	<	begin
1689	<	st := Space2Underscore(AnsiUppercase(strpas(aliasname)));
1690	<	if st = '' then
1691	<	begin
1692	<	sBaseName := 'F_'; {do not localize}
1693	<	aliasname_length := 2;
1694	<	j := 1; j_len := 1;
1695	<	st := sBaseName + IntToStr(j);
1696	<	end
1697	<	else
1698	<	begin
1699	<	j := 0; j_len := 0;
1700	<	sBaseName := st;
1701	<	end;
1702	<
1703	<	{Look for other columns with the same name and make unique}
1704	<
1705	<	while VarByName(st,i-1) <> nil do
1706	<	begin
1707	<	Inc(j);
1708	<	j_len := Length(IntToStr(j));
1709	<	if j_len + Length(sBaseName) > 31 then
1710	<	st := Copy(sBaseName, 1, 31 - j_len) + IntToStr(j)
1711	<	else
1712	<	st := sBaseName + IntToStr(j);
1713	<	end;
1714	<
1715	<	FXSQLVARs[i].FName := st;
1716	<	end;
1717	<
1718	<	{Finally initialise the XSQLVAR}
1719	<
1720	<	FXSQLVARs[i].FIndex := i;
1721	<
1722	<	case sqltype and (not 1) of
1723	<	SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
1724	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT,
1725	<	SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
1726	<	if (sqllen = 0) then
1727	<	{ Make sure you get a valid pointer anyway
1728	<	select '' from foo }
1729	<	IBAlloc(sqldata, 0, 1)
1730	<	else
1731	<	IBAlloc(sqldata, 0, sqllen)
1732	<	end;
1733	<	SQL_VARYING: begin
1734	<	IBAlloc(sqldata, 0, sqllen + 2);
1735	<	end;
1736	<	else
1737	<	IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
1738	<	end;
1739	<	if (sqltype and 1 = 1) then
1740	<	IBAlloc(sqlind, 0, SizeOf(Short))
1741	<	else
1742	<	if (sqlind <> nil) then
1743	<	ReallocMem(sqlind, 0);
1744	<	end;
1745	<	end;
1746	<	end;
1747	<	end;
1748	<
1749	<	procedure TIBXSQLDA.SetCount(Value: Integer);
1750	<	var
1751	<	i, OldSize: Integer;
1752	<	p : PXSQLVAR;
1753	<	begin
1754	<	FCount := Value;
1755	<	if FCount = 0 then
1756	<	FUniqueRelationName := ''
1757	<	else
1758	<	begin
1759	<	if FSize > 0 then
1760	<	OldSize := XSQLDA_LENGTH(FSize)
1761	<	else
1762	<	OldSize := 0;
1763	<	if FCount > FSize then
1764	<	begin
1765	<	IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
1766	<	SetLength(FXSQLVARs, FCount);
1767	<	FXSQLDA^.version := SQLDA_VERSION1;
1768	<	p := @FXSQLDA^.sqlvar[0];
1769	<	for i := 0 to FCount - 1 do
1770	<	begin
1771	<	if i >= FSize then
1772	<	FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
1773	<	FXSQLVARs[i].FXSQLVAR := p;
1774	<	p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
1775	<	end;
1776	<	FSize := FCount;
1777	<	end;
1778	<	if FSize > 0 then
1779	<	begin
1780	<	FXSQLDA^.sqln := Value;
1781	<	FXSQLDA^.sqld := Value;
1782	<	end;
1783	<	end;
257	>	ReallocMem(Pointer(P), NewSize);
258	>	for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
259		end;
260
261		{ TIBOutputDelimitedFile }
#	Line 1826 | Line 301 | begin
301		begin
302		for i := 0 to Columns.Count - 1 do
303		if i = 0 then
304	<	st := strpas(Columns[i].Data^.aliasname)
304	>	st := Columns[i].GetAliasname
305		else
306	<	st := st + FColDelimiter + strpas(Columns[i].Data^.aliasname);
306	>	st := st + FColDelimiter + Columns[i].GetAliasname;
307		st := st + FRowDelimiter;
308		{$IFDEF UNIX}
309		if FHandle <> -1 then
#	Line 2019 | Line 494 | begin
494		for i := 0 to Columns.Count - 1 do
495		begin
496		{$IFDEF UNIX}
497	<	BytesWritten := FpWrite(FHandle,Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen);
497	>	BytesWritten := FpWrite(FHandle,Columns[i].GetAsPointer^, Columns[i].GetSize);
498		{$ELSE}
499	<	WriteFile(FHandle, Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen,
499	>	WriteFile(FHandle, Columns[i].GetAsPointer^, Columns[i].GetSize,
500		BytesWritten, nil);
501		{$ENDIF}
502	<	if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
502	>	if BytesWritten <> DWORD(Columns[i].GetSize) then
503		exit;
504		end;
505		result := True;
#	Line 2059 | Line 534 | begin
534		for i := 0 to Params.Count - 1 do
535		begin
536		{$IFDEF UNIX}
537	<	BytesRead := FpRead(FHandle,Params[i].Data^.sqldata^,Params[i].Data^.sqllen);
537	>	BytesRead := FpRead(FHandle,Params[i].GetAsPointer^,Params[i].GetSize);
538		{$ELSE}
539	<	ReadFile(FHandle, Params[i].Data^.sqldata^, Params[i].Data^.sqllen,
539	>	ReadFile(FHandle, Params[i].GetAsPointer^, Params[i].GetSize,
540		BytesRead, nil);
541		{$ENDIF}
542	<	if BytesRead <> DWORD(Params[i].Data^.sqllen) then
542	>	if BytesRead <> DWORD(Params[i].GetSize) then
543		exit;
544		end;
545		result := True;
#	Line 2093 | Line 568 | end;
568		constructor TIBSQL.Create(AOwner: TComponent);
569		begin
570		inherited Create(AOwner);
2096	–	FIBLoaded := False;
2097	–	CheckIBLoaded;
2098	–	FIBLoaded := True;
571		FGenerateParamNames := False;
572		FGoToFirstRecordOnExecute := True;
573		FBase := TIBBase.Create(Self);
574		FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
575		FBase.BeforeTransactionEnd := BeforeTransactionEnd;
2104	–	FBOF := False;
2105	–	FEOF := False;
2106	–	FPrepared := False;
576		FRecordCount := 0;
577		FSQL := TStringList.Create;
578		TStringList(FSQL).OnChanging := SQLChanging;
579	<	FProcessedSQL := TStringList.Create;
2111	<	FHandle := nil;
2112	<	FSQLParams := TIBXSQLDA.Create(self,daInput);
2113	<	FSQLRecord := TIBXSQLDA.Create(self,daOutput);
2114	<	FSQLType := SQLUnknown;
579	>	TStringList(FSQL).OnChange := SQLChanged;
580		FParamCheck := True;
2116	–	FCursor := Name + RandomString(8);
581		if AOwner is TIBDatabase then
582		Database := TIBDatabase(AOwner)
583		else
#	Line 2123 | Line 587 | end;
587
588		destructor TIBSQL.Destroy;
589		begin
590	<	if FIBLoaded then
591	<	begin
592	<	if (FOpen) then
2129	<	Close;
2130	<	if (FHandle <> nil) then
2131	<	FreeHandle;
2132	<	FSQL.Free;
2133	<	FProcessedSQL.Free;
2134	<	FBase.Free;
2135	<	FSQLParams.Free;
2136	<	FSQLRecord.Free;
2137	<	end;
590	>	FreeHandle;
591	>	FSQL.Free;
592	>	FBase.Free;
593		inherited Destroy;
594		end;
595
#	Line 2142 | Line 597 | procedure TIBSQL.BatchInput(InputObject:
597		begin
598		if not Prepared then
599		Prepare;
600	<	InputObject.FParams := Self.FSQLParams;
600	>	InputObject.FParams := Self.GetSQLParams;
601		InputObject.ReadyFile;
602	<	if FSQLType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
602	>	if GetSQLStatementType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
603		while InputObject.ReadParameters do
604		ExecQuery;
605		end;
#	Line 2154 | Line 609 | begin
609		CheckClosed;
610		if not Prepared then
611		Prepare;
612	<	if FSQLType = SQLSelect then begin
612	>	if GetSQLStatementType = SQLSelect then begin
613		try
614		ExecQuery;
615	<	OutputObject.FColumns := Self.FSQLRecord;
615	>	OutputObject.FColumns := Self.FResults;
616		OutputObject.ReadyFile;
617		if not FGoToFirstRecordOnExecute then
618		Next;
#	Line 2171 | Line 626 | end;
626
627		procedure TIBSQL.CheckClosed;
628		begin
629	<	if FOpen then IBError(ibxeSQLOpen, [nil]);
629	>	if FResultSet <> nil  then IBError(ibxeSQLOpen, [nil]);
630		end;
631
632		procedure TIBSQL.CheckOpen;
633		begin
634	<	if not FOpen then IBError(ibxeSQLClosed, [nil]);
634	>	if FResultSet = nil then IBError(ibxeSQLClosed, [nil]);
635		end;
636
637		procedure TIBSQL.CheckValidStatement;
638		begin
639		FBase.CheckTransaction;
640	<	if (FHandle = nil) then
640	>	if (FStatement = nil) then
641		IBError(ibxeInvalidStatementHandle, [nil]);
642		end;
643
644		procedure TIBSQL.Close;
2190	–	var
2191	–	isc_res: ISC_STATUS;
645		begin
646	<	try
647	<	if (FHandle <> nil) and (SQLType = SQLSelect) and FOpen then begin
648	<	isc_res := Call(
649	<	isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
650	<	False);
651	<	if (StatusVector^ = 1) and (isc_res > 0) and
652	<	not CheckStatusVector(
2200	<	[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
2201	<	IBDatabaseError;
2202	<	end;
2203	<	finally
2204	<	FEOF := False;
2205	<	FBOF := False;
2206	<	FOpen := False;
2207	<	FRecordCount := 0;
2208	<	end;
646	>	if FResults <> nil then
647	>	FResults.SetRetainInterfaces(false);
648	>	FResultSet := nil;
649	>	FResults := nil;
650	>	FBOF := false;
651	>	FEOF := false;
652	>	FRecordCount := 0;
653		end;
654
655	<	function TIBSQL.Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
655	>	function TIBSQL.GetFieldCount: integer;
656		begin
657	<	result := 0;
658	<	if Transaction <> nil then
659	<	result := Transaction.Call(ErrCode, RaiseError)
657	>	if FResults <> nil then
658	>	Result := FResults.GetCount
659	>	else
660	>	if FMetaData <> nil then
661	>	Result := FMetaData.GetCount
662		else
663	<	if RaiseError and (ErrCode > 0) then
2218	<	IBDataBaseError;
663	>	Result := 0;
664		end;
665
666	<	function TIBSQL.Current: TIBXSQLDA;
666	>	function TIBSQL.GetOpen: Boolean;
667		begin
668	<	result := FSQLRecord;
668	>	Result := FResultSet <> nil;
669		end;
670
671	<	function TIBSQL.GetFieldCount: integer;
671	>	function TIBSQL.GetPrepared: Boolean;
672	>	begin
673	>	Result := (FStatement <> nil) and FStatement.IsPrepared;
674	>	end;
675	>
676	>	function TIBSQL.GetSQLStatementType: TIBSQLStatementTypes;
677		begin
678	<	Result := FSQLRecord.Count
678	>	if FStatement = nil then
679	>	Result := SQLUnknown
680	>	else
681	>	Result := FStatement.GetSQLStatementType;
682		end;
683
684		procedure TIBSQL.SetUniqueParamNames(AValue: Boolean);
#	Line 2237 | Line 690 | end;
690
691		procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
692		begin
693	<	if (FHandle <> nil) then begin
2241	<	Close;
2242	<	FreeHandle;
2243	<	end;
693	>	FreeHandle;
694		end;
695
696		procedure TIBSQL.ExecQuery;
697		var
698		fetch_res: ISC_STATUS;
699	+	{$IFDEF IBXQUERYSTATS}
700	+	stats: TPerfCounters;
701	+	{$ENDIF}
702	+	{$IFDEF IBXQUERYTIME}
703	+	tmsecs: comp;
704	+	{$ENDIF}
705		begin
706		CheckClosed;
707		if not Prepared then Prepare;
708		CheckValidStatement;
709	<	case FSQLType of
710	<	SQLSelect: begin
711	<	Call(isc_dsql_execute2(StatusVector,
712	<	TRHandle,
713	<	@FHandle,
714	<	Database.SQLDialect,
715	<	FSQLParams.AsXSQLDA,
716	<	nil), True);
717	<	Call(
718	<	isc_dsql_set_cursor_name(StatusVector, @FHandle, PChar(FCursor), 0),
719	<	True);
720	<	FOpen := True;
721	<	FBOF := True;
722	<	FEOF := False;
723	<	FRecordCount := 0;
724	<	if FGoToFirstRecordOnExecute then
725	<	Next;
726	<	end;
727	<	SQLExecProcedure: begin
728	<	fetch_res := Call(isc_dsql_execute2(StatusVector,
729	<	TRHandle,
2274	<	@FHandle,
2275	<	Database.SQLDialect,
2276	<	FSQLParams.AsXSQLDA,
2277	<	FSQLRecord.AsXSQLDA), True);
2278	<	(*      if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
2279	<	begin
2280	<	{ Sometimes a prepared stored procedure appears to get
2281	<	off sync on the server ....This code is meant to try
2282	<	to work around the problem simply by "retrying". This
2283	<	need to be reproduced and fixed.
2284	<	}
2285	<	isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2286	<	PChar(FProcessedSQL.Text), 1, nil);
2287	<	Call(isc_dsql_execute2(StatusVector,
2288	<	TRHandle,
2289	<	@FHandle,
2290	<	Database.SQLDialect,
2291	<	FSQLParams.AsXSQLDA,
2292	<	FSQLRecord.AsXSQLDA), True);
2293	<	end;  *)
2294	<	end
2295	<	else
2296	<	Call(isc_dsql_execute(StatusVector,
2297	<	TRHandle,
2298	<	@FHandle,
2299	<	Database.SQLDialect,
2300	<	FSQLParams.AsXSQLDA), True)
709	>	{$IFDEF IBXQUERYTIME}
710	>	tmsecs := TimeStampToMSecs(DateTimeToTimeStamp(Now));
711	>	{$ENDIF}
712	>	if SQLStatementType = SQLSelect then
713	>	begin
714	>	FResultSet := FStatement.OpenCursor;
715	>	FResults := FResultSet;
716	>	FResults.SetRetainInterfaces(true);
717	>	FBOF := True;
718	>	FEOF := False;
719	>	FRecordCount := 0;
720	>	if not (csDesigning in ComponentState) then
721	>	MonitorHook.SQLExecute(Self);
722	>	if FGoToFirstRecordOnExecute then
723	>	Next;
724	>	end
725	>	else
726	>	begin
727	>	FResults := FStatement.Execute;
728	>	if not (csDesigning in ComponentState) then
729	>	MonitorHook.SQLExecute(Self);
730		end;
731	<	if not (csDesigning in ComponentState) then
732	<	MonitorHook.SQLExecute(Self);
731	>	{$IFDEF IBXQUERYTIME}
732	>	writeln('Executing ',FStatement.GetSQLText,
733	>	' Response time= ',Format('%f msecs',[TimeStampToMSecs(DateTimeToTimeStamp(Now)) - tmsecs]));
734	>	{$ENDIF}
735	>	{$IFDEF IBXQUERYSTATS}
736	>	if FStatement.GetPerfStatistics(stats) then
737	>	writeln('Executing ',FStatement.GetSQLText,
738	>	' Elapsed time= ', FormatFloat('#0.000',stats[psRealTime]/1000),' sec');
739	>	{$ENDIF}
740	>	FBase.DoAfterExecQuery(self);
741	>	end;
742	>
743	>	function TIBSQL.HasField(FieldName: String): boolean;
744	>	begin
745	>	if FResults = nil then
746	>	IBError(ibxeNoFieldAccess,[nil]);
747	>
748	>	Result := FResults.ByName(FieldName) <> nil;
749		end;
750
751		function TIBSQL.GetEOF: Boolean;
752		begin
753	<	result := FEOF or not FOpen;
753	>	result := FEOF or (FResultSet = nil);
754		end;
755
756	<	function TIBSQL.FieldByName(FieldName: String): TIBXSQLVAR;
2312	<	var
2313	<	i: Integer;
756	>	function TIBSQL.FieldByName(FieldName: String): ISQLData;
757		begin
758	<	i := GetFieldIndex(FieldName);
759	<	if (i < 0) then
758	>	if FResults = nil then
759	>	IBError(ibxeNoFieldAccess,[nil]);
760	>
761	>	Result := FResults.ByName(FieldName);
762	>
763	>	if Result = nil then
764		IBError(ibxeFieldNotFound, [FieldName]);
2318	–	result := GetFields(i);
765		end;
766
767	<	function TIBSQL.ParamByName(ParamName: String): TIBXSQLVAR;
767	>	function TIBSQL.ParamByName(ParamName: String): ISQLParam;
768		begin
769		Result := Params.ByName(ParamName);
770		end;
771
772	<	function TIBSQL.GetFields(const Idx: Integer): TIBXSQLVAR;
772	>	function TIBSQL.GetFields(const Idx: Integer): ISQLData;
773		begin
774	<	if (Idx < 0) or (Idx >= FSQLRecord.Count) then
774	>	if FResults = nil then
775	>	IBError(ibxeNoFieldAccess,[nil]);
776	>
777	>	if (Idx < 0) or (Idx >= FResults.GetCount) then
778		IBError(ibxeFieldNotFound, [IntToStr(Idx)]);
779	<	result := FSQLRecord[Idx];
779	>	result := FResults[Idx];
780		end;
781
782		function TIBSQL.GetFieldIndex(FieldName: String): Integer;
783	+	var Field: IColumnMetaData;
784		begin
785	<	if (FSQLRecord.GetXSQLVarByName(FieldName) = nil) then
785	>	if FMetaData = nil then
786	>	IBError(ibxeNoFieldAccess,[nil]);
787	>
788	>	Field := FMetaData.ByName(FieldName);
789	>
790	>	if Field = nil then
791		result := -1
792		else
793	<	result := FSQLRecord.GetXSQLVarByName(FieldName).Index;
793	>	result := Field.GetIndex;
794		end;
795
796	<	function TIBSQL.Next: TIBXSQLDA;
2342	<	var
2343	<	fetch_res: ISC_STATUS;
796	>	function TIBSQL.Next: boolean;
797		begin
798	<	result := nil;
799	<	if not FEOF then begin
798	>	result := false;
799	>	if not FEOF then
800	>	begin
801		CheckOpen;
802	<	{ Go to the next record... }
803	<	fetch_res :=
804	<	Call(isc_dsql_fetch(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.AsXSQLDA), False);
805	<	if (fetch_res = 100) or (CheckStatusVector([isc_dsql_cursor_err])) then begin
806	<	FEOF := True;
807	<	end else if (fetch_res > 0) then begin
808	<	try
809	<	IBDataBaseError;
810	<	except
2357	<	Close;
2358	<	raise;
2359	<	end;
2360	<	end else begin
802	>	try
803	>	Result := FResultSet.FetchNext;
804	>	except
805	>	Close;
806	>	raise;
807	>	end;
808	>
809	>	if Result then
810	>	begin
811		Inc(FRecordCount);
812		FBOF := False;
813	<	result := FSQLRecord;
814	<	end;
813	>	end
814	>	else
815	>	FEOF := true;
816	>
817		if not (csDesigning in ComponentState) then
818		MonitorHook.SQLFetch(Self);
819		end;
820		end;
821
822		procedure TIBSQL.FreeHandle;
2371	–	var
2372	–	isc_res: ISC_STATUS;
823		begin
824	<	try
825	<	{ The following two lines merely set the SQLDA count
826	<	variable FCount to 0, but do not deallocate
827	<	That way the allocations can be reused for
828	<	a new query sring in the same SQL instance }
829	<	FSQLRecord.Count := 0;
830	<	FSQLParams.Count := 0;
831	<	if FHandle <> nil then begin
2382	<	isc_res :=
2383	<	Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
2384	<	if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
2385	<	IBDataBaseError;
2386	<	end;
2387	<	finally
2388	<	FPrepared := False;
2389	<	FHandle := nil;
2390	<	end;
824	>	if FStatement <> nil then
825	>	FStatement.SetRetainInterfaces(false);
826	>	Close;
827	>	FStatement := nil;
828	>	FResults := nil;
829	>	FResultSet := nil;
830	>	FMetaData := nil;
831	>	FSQLParams := nil;
832		end;
833
834		function TIBSQL.GetDatabase: TIBDatabase;
#	Line 2395 | Line 836 | begin
836		result := FBase.Database;
837		end;
838
2398	–	function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
2399	–	begin
2400	–	result := FBase.DBHandle;
2401	–	end;
2402	–
839		function TIBSQL.GetPlan: String;
2404	–	var
2405	–	result_buffer: array[0..16384] of Char;
2406	–	result_length, i: Integer;
2407	–	info_request: Char;
840		begin
841		if (not Prepared) or
842	<	(not (FSQLType in [SQLSelect, SQLSelectForUpdate,
842	>	(not (GetSQLStatementType in [SQLSelect, SQLSelectForUpdate,
843		{TODO: SQLExecProcedure, }
844		SQLUpdate, SQLDelete])) then
845		result := ''
846	<	else begin
847	<	info_request := Char(isc_info_sql_get_plan);
2416	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
2417	<	SizeOf(result_buffer), result_buffer), True);
2418	<	if (result_buffer[0] <> Char(isc_info_sql_get_plan)) then
2419	<	IBError(ibxeUnknownError, [nil]);
2420	<	result_length := isc_vax_integer(@result_buffer[1], 2);
2421	<	SetString(result, nil, result_length);
2422	<	for i := 1 to result_length do
2423	<	result[i] := result_buffer[i + 2];
2424	<	result := Trim(result);
2425	<	end;
846	>	else
847	>	Result := FStatement.GetPlan;
848		end;
849
850		function TIBSQL.GetRecordCount: Integer;
851		begin
852	<	result := FRecordCount;
852	>	Result := FRecordCount;
853		end;
854
855		function TIBSQL.GetRowsAffected: Integer;
856		var
857	<	result_buffer: array[0..1048] of Char;
2436	<	info_request: Char;
857	>	SelectCount, InsertCount, UpdateCount, DeleteCount: integer;
858		begin
859		if not Prepared then
860	<	result := -1
861	<	else begin
862	<	info_request := Char(isc_info_sql_records);
863	<	if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
864	<	SizeOf(result_buffer), result_buffer) > 0 then
2444	<	IBDatabaseError;
2445	<	if (result_buffer[0] <> Char(isc_info_sql_records)) then
2446	<	result := -1
2447	<	else
2448	<	case SQLType of
2449	<	SQLUpdate:   Result := isc_vax_integer(@result_buffer[6], 4);
2450	<	SQLDelete:   Result := isc_vax_integer(@result_buffer[13], 4);
2451	<	SQLInsert:   Result := isc_vax_integer(@result_buffer[27], 4);
2452	<	else         Result := -1 ;
2453	<	end ;
860	>	Result := -1
861	>	else
862	>	begin
863	>	FStatement.GetRowsAffected(SelectCount, InsertCount, UpdateCount, DeleteCount);
864	>	Result := InsertCount + UpdateCount + DeleteCount;
865		end;
866		end;
867
868	<	function TIBSQL.GetSQLParams: TIBXSQLDA;
868	>	function TIBSQL.GetSQLParams: ISQLParams;
869		begin
870		if not Prepared then
871		Prepare;
872	<	result := FSQLParams;
872	>	result := Statement.SQLParams;
873		end;
874
875		function TIBSQL.GetTransaction: TIBTransaction;
#	Line 2466 | Line 877 | begin
877		result := FBase.Transaction;
878		end;
879
2469	–	function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
2470	–	begin
2471	–	result := FBase.TRHandle;
2472	–	end;
2473	–
2474	–	{
2475	–	Preprocess SQL
2476	–	Using FSQL, process the typed SQL and put the process SQL
2477	–	in FProcessedSQL and parameter names in FSQLParams
2478	–	}
2479	–	procedure TIBSQL.PreprocessSQL;
2480	–	var
2481	–	cCurChar, cNextChar, cQuoteChar: Char;
2482	–	sSQL, sProcessedSQL, sParamName: String;
2483	–	i, iLenSQL, iSQLPos: Integer;
2484	–	iCurState {$ifdef ALLOWDIALECT3PARAMNAMES}, iCurParamState {$endif}: Integer;
2485	–	iParamSuffix: Integer;
2486	–	slNames: TStrings;
2487	–
2488	–	const
2489	–	DefaultState = 0;
2490	–	CommentState = 1;
2491	–	QuoteState = 2;
2492	–	ParamState = 3;
2493	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2494	–	ParamDefaultState = 0;
2495	–	ParamQuoteState = 1;
2496	–	{$endif}
2497	–
2498	–	procedure AddToProcessedSQL(cChar: Char);
2499	–	begin
2500	–	sProcessedSQL[iSQLPos] := cChar;
2501	–	Inc(iSQLPos);
2502	–	end;
2503	–
2504	–	begin
2505	–	slNames := TStringList.Create;
2506	–	try
2507	–	{ Do some initializations of variables }
2508	–	iParamSuffix := 0;
2509	–	cQuoteChar := '''';
2510	–	sSQL := FSQL.Text;
2511	–	iLenSQL := Length(sSQL);
2512	–	SetString(sProcessedSQL, nil, iLenSQL + 1);
2513	–	i := 1;
2514	–	iSQLPos := 1;
2515	–	iCurState := DefaultState;
2516	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2517	–	iCurParamState := ParamDefaultState;
2518	–	{$endif}
2519	–	{ Now, traverse through the SQL string, character by character,
2520	–	picking out the parameters and formatting correctly for InterBase }
2521	–	while (i <= iLenSQL) do begin
2522	–	{ Get the current token and a look-ahead }
2523	–	cCurChar := sSQL[i];
2524	–	if i = iLenSQL then
2525	–	cNextChar := #0
2526	–	else
2527	–	cNextChar := sSQL[i + 1];
2528	–	{ Now act based on the current state }
2529	–	case iCurState of
2530	–	DefaultState: begin
2531	–	case cCurChar of
2532	–	'''', '"': begin
2533	–	cQuoteChar := cCurChar;
2534	–	iCurState := QuoteState;
2535	–	end;
2536	–	'?', ':': begin
2537	–	iCurState := ParamState;
2538	–	AddToProcessedSQL('?');
2539	–	end;
2540	–	'/': if (cNextChar = '*') then begin
2541	–	AddToProcessedSQL(cCurChar);
2542	–	Inc(i);
2543	–	iCurState := CommentState;
2544	–	end;
2545	–	end;
2546	–	end;
2547	–	CommentState: begin
2548	–	if (cNextChar = #0) then
2549	–	IBError(ibxeSQLParseError, [SEOFInComment])
2550	–	else if (cCurChar = '*') then begin
2551	–	if (cNextChar = '/') then
2552	–	iCurState := DefaultState;
2553	–	end;
2554	–	end;
2555	–	QuoteState: begin
2556	–	if cNextChar = #0 then
2557	–	IBError(ibxeSQLParseError, [SEOFInString])
2558	–	else if (cCurChar = cQuoteChar) then begin
2559	–	if (cNextChar = cQuoteChar) then begin
2560	–	AddToProcessedSQL(cCurChar);
2561	–	Inc(i);
2562	–	end else
2563	–	iCurState := DefaultState;
2564	–	end;
2565	–	end;
2566	–	ParamState:
2567	–	begin
2568	–	{ collect the name of the parameter }
2569	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2570	–	if iCurParamState = ParamDefaultState then
2571	–	begin
2572	–	if cCurChar = '"' then
2573	–	iCurParamState := ParamQuoteState
2574	–	else
2575	–	{$endif}
2576	–	if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
2577	–	sParamName := sParamName + cCurChar
2578	–	else if FGenerateParamNames then
2579	–	begin
2580	–	sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
2581	–	Inc(iParamSuffix);
2582	–	iCurState := DefaultState;
2583	–	slNames.AddObject(sParamName,self); //Note local convention
2584	–	//add pointer to self to mark entry
2585	–	sParamName := '';
2586	–	end
2587	–	else
2588	–	IBError(ibxeSQLParseError, [SParamNameExpected]);
2589	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2590	–	end
2591	–	else begin
2592	–	{ determine if Quoted parameter name is finished }
2593	–	if cCurChar = '"' then
2594	–	begin
2595	–	Inc(i);
2596	–	slNames.Add(sParamName);
2597	–	SParamName := '';
2598	–	iCurParamState := ParamDefaultState;
2599	–	iCurState := DefaultState;
2600	–	end
2601	–	else
2602	–	sParamName := sParamName + cCurChar
2603	–	end;
2604	–	{$endif}
2605	–	{ determine if the unquoted parameter name is finished }
2606	–	if {$ifdef ALLOWDIALECT3PARAMNAMES}(iCurParamState <> ParamQuoteState) and {$endif}
2607	–	(iCurState <> DefaultState) then
2608	–	begin
2609	–	if not (cNextChar in ['A'..'Z', 'a'..'z',
2610	–	'0'..'9', '_', '$']) then begin
2611	–	Inc(i);
2612	–	iCurState := DefaultState;
2613	–	slNames.Add(sParamName);
2614	–	sParamName := '';
2615	–	end;
2616	–	end;
2617	–	end;
2618	–	end;
2619	–	if iCurState <> ParamState then
2620	–	AddToProcessedSQL(sSQL[i]);
2621	–	Inc(i);
2622	–	end;
2623	–	AddToProcessedSQL(#0);
2624	–	FSQLParams.Count := slNames.Count;
2625	–	for i := 0 to slNames.Count - 1 do
2626	–	FSQLParams.SetParamName(slNames[i], i,FUniqueParamNames or (slNames.Objects[i] <> nil));
2627	–	FProcessedSQL.Text := sProcessedSQL;
2628	–	finally
2629	–	slNames.Free;
2630	–	end;
2631	–	end;
2632	–
880		procedure TIBSQL.SetDatabase(Value: TIBDatabase);
881		begin
882	+	if Value = FBase.Database then Exit;
883		FBase.Database := Value;
884	+	FreeHandle;
885		end;
886
887		procedure TIBSQL.Prepare;
2639	–	var
2640	–	stmt_len: Integer;
2641	–	res_buffer: array[0..7] of Char;
2642	–	type_item: Char;
888		begin
889		CheckClosed;
890		FBase.CheckDatabase;
891		FBase.CheckTransaction;
892	<	if FPrepared then
892	>	Close;
893	>	if Prepared then
894		exit;
895		if (FSQL.Text = '') then
896		IBError(ibxeEmptyQuery, [nil]);
897	+
898	+	if FStatement <> nil then
899	+	FStatement.Prepare(Transaction.TransactionIntf)
900	+	else
901		if not ParamCheck then
902	<	FProcessedSQL.Text := FSQL.Text
902	>	FStatement := Database.Attachment.Prepare(Transaction.TransactionIntf,SQL.Text)
903		else
904	<	PreprocessSQL;
905	<	if (FProcessedSQL.Text = '') then
906	<	IBError(ibxeEmptyQuery, [nil]);
907	<	try
908	<	Call(isc_dsql_alloc_statement2(StatusVector, DBHandle,
909	<	@FHandle), True);
910	<	Call(isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
911	<	PChar(FProcessedSQL.Text), Database.SQLDialect, nil), True);
912	<	{ After preparing the statement, query the stmt type and possibly
913	<	create a FSQLRecord "holder" }
914	<	{ Get the type of the statement }
2665	<	type_item := Char(isc_info_sql_stmt_type);
2666	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
2667	<	SizeOf(res_buffer), res_buffer), True);
2668	<	if (res_buffer[0] <> Char(isc_info_sql_stmt_type)) then
2669	<	IBError(ibxeUnknownError, [nil]);
2670	<	stmt_len := isc_vax_integer(@res_buffer[1], 2);
2671	<	FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
2672	<	{ Done getting the type }
2673	<	case FSQLType of
2674	<	SQLGetSegment,
2675	<	SQLPutSegment,
2676	<	SQLStartTransaction: begin
2677	<	FreeHandle;
2678	<	IBError(ibxeNotPermitted, [nil]);
2679	<	end;
2680	<	SQLCommit,
2681	<	SQLRollback,
2682	<	SQLDDL, SQLSetGenerator,
2683	<	SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
2684	<	SQLExecProcedure: begin
2685	<	{ We already know how many inputs there are, so... }
2686	<	if (FSQLParams.FXSQLDA <> nil) and
2687	<	(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
2688	<	FSQLParams.FXSQLDA), False) > 0) then
2689	<	IBDataBaseError;
2690	<	FSQLParams.Initialize;
2691	<	if FSQLType in [SQLSelect, SQLSelectForUpdate,
2692	<	SQLExecProcedure] then begin
2693	<	{ Allocate an initial output descriptor (with one column) }
2694	<	FSQLRecord.Count := 1;
2695	<	{ Using isc_dsql_describe, get the right size for the columns... }
2696	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2697	<	if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
2698	<	FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
2699	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2700	<	end else if FSQLRecord.FXSQLDA^.sqld = 0 then
2701	<	FSQLRecord.Count := 0;
2702	<	FSQLRecord.Initialize;
2703	<	end;
2704	<	end;
2705	<	end;
2706	<	FPrepared := True;
2707	<	if not (csDesigning in ComponentState) then
904	>	FStatement := Database.Attachment.PrepareWithNamedParameters(
905	>	Transaction.TransactionIntf,
906	>	SQL.Text,
907	>	GenerateParamNames);
908	>	{$IFDEF IBXQUERYSTATS}
909	>	FStatement.EnableStatistics(true);
910	>	{$ENDIF}
911	>	FMetaData := FStatement.GetMetaData;
912	>	FSQLParams := FStatement.GetSQLParams;
913	>	FStatement.SetRetainInterfaces(true);
914	>	if not (csDesigning in ComponentState) then
915		MonitorHook.SQLPrepare(Self);
2709	–	except
2710	–	on E: Exception do begin
2711	–	if (FHandle <> nil) then
2712	–	FreeHandle;
2713	–	raise;
2714	–	end;
2715	–	end;
916		end;
917
918		function TIBSQL.GetUniqueRelationName: String;
919		begin
920	<	if FPrepared and (FSQLType = SQLSelect) then
921	<	result := FSQLRecord.UniqueRelationName
920	>	if Prepared and (GetSQLStatementType = SQLSelect) then
921	>	result := FMetaData.GetUniqueRelationName
922		else
923		result := '';
924		end;
#	Line 2745 | Line 945 | procedure TIBSQL.SQLChanging(Sender: TOb
945		begin
946		if Assigned(OnSQLChanging) then
947		OnSQLChanging(Self);
948	<	if FHandle <> nil then FreeHandle;
948	>
949	>	FreeHandle;
950		end;
951
952	<	procedure TIBSQL.BeforeTransactionEnd(Sender: TObject);
952	>	procedure TIBSQL.SQLChanged(Sender: TObject);
953		begin
954	<	if (FOpen) then
955	<	Close;
954	>	if assigned(OnSQLChanged) then
955	>	OnSQLChanged(self);
956	>	end;
957	>
958	>	procedure TIBSQL.BeforeTransactionEnd(Sender: TObject;
959	>	Action: TTransactionAction);
960	>	begin
961	>	if not (Owner is TIBCustomDataSet) then
962	>	FreeHandle;
963		end;
964
965		end.

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