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

Comparing ibx/trunk/runtime/IBSQL.pas (file contents):
Revision 27 by tony, Tue Apr 14 13:10:23 2015 UTC vs.
Revision 104 by tony, Thu Jan 18 14:37:29 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;
81	<
82	<	const
83	<	sSQLErrorSeparator = ' When Executing: ';
58	>	SysUtils, Classes, IBExternals, IB, IBDatabase, IBUtils;
59
60		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	–
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 318 | Line 155 | type
155		end;
156
157		{ TIBSQL }
321	–	TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
322	–	SQLUpdate, SQLDelete, SQLDDL,
323	–	SQLGetSegment, SQLPutSegment,
324	–	SQLExecProcedure, SQLStartTransaction,
325	–	SQLCommit, SQLRollback,
326	–	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? }
337	<	FEOF,                          { At EOF? }
338	<	FGoToFirstRecordOnExecute,     { Automatically position record on first record after executing }
339	<	FOpen,                         { Is a cursor open? }
340	<	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? }
342	–	FCursor: String;               { Cursor name...}
343	–	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 }
349	<	FSQLRecord: TIBXSQLDA;         { The current record }
350	<	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;
354	–	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;
363	–	function GetTRHandle: PISC_TR_HANDLE;
364	–	procedure PreprocessSQL;
193		procedure SetDatabase(Value: TIBDatabase);
194		procedure SetSQL(Value: TStrings);
195		procedure SetTransaction(Value: TIBTransaction);
196		procedure SQLChanging(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);
375	–	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;
380	–	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;
389	–	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;
401	<	property TRHandle: PISC_TR_HANDLE read GetTRHandle;
402	<	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 412 | 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;
421	<
422	<	{ TIBXSQLVAR }
423	<	constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
424	<	begin
425	<	inherited Create;
426	<	FParent := Parent;
427	<	FSQL := Query;
428	<	end;
429	<
430	<	procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
431	<	var
432	<	szBuff: PChar;
433	<	s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
434	<	bSourceBlob, bDestBlob: Boolean;
435	<	iSegs: Int64;
436	<	iMaxSeg: Int64;
437	<	iSize: Int64;
438	<	iBlobType: Short;
439	<	begin
440	<	szBuff := nil;
441	<	bSourceBlob := True;
442	<	bDestBlob := True;
443	<	s_bhandle := nil;
444	<	d_bhandle := nil;
445	<	try
446	<	if (Source.IsNull) then
447	<	begin
448	<	IsNull := True;
449	<	exit;
450	<	end
451	<	else
452	<	if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
453	<	(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
454	<	exit; { arrays not supported }
455	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
456	<	(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
457	<	begin
458	<	AsXSQLVAR := Source.AsXSQLVAR;
459	<	exit;
460	<	end
461	<	else
462	<	if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
463	<	begin
464	<	szBuff := nil;
465	<	IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
466	<	Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
467	<	bSourceBlob := False;
468	<	iSize := Source.FXSQLVAR^.sqllen;
469	<	end
470	<	else
471	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
472	<	bDestBlob := False;
473	<
474	<	if bSourceBlob then
475	<	begin
476	<	{ read the blob }
477	<	Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
478	<	Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
479	<	0, nil), True);
480	<	try
481	<	IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
482	<	iBlobType);
483	<	szBuff := nil;
484	<	IBAlloc(szBuff, 0, iSize);
485	<	IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
486	<	finally
487	<	Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
488	<	end;
489	<	end;
490	<
491	<	if bDestBlob then
492	<	begin
493	<	{ write the blob }
494	<	FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
495	<	FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
496	<	0, nil), True);
497	<	try
498	<	IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
499	<	isNull := false
500	<	finally
501	<	FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
502	<	end;
503	<	end
504	<	else
505	<	begin
506	<	{ just copy the buffer }
507	<	FXSQLVAR.sqltype := SQL_TEXT;
508	<	FXSQLVAR.sqllen := iSize;
509	<	IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
510	<	Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
511	<	end;
512	<	finally
513	<	FreeMem(szBuff);
514	<	end;
515	<	end;
516	<
517	<	function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
518	<	var
519	<	Scaling : Int64;
520	<	i: Integer;
521	<	Val: Double;
522	<	begin
523	<	Scaling := 1; Val := Value;
524	<	if Scale > 0 then
525	<	begin
526	<	for i := 1 to Scale do
527	<	Scaling := Scaling * 10;
528	<	result := Val * Scaling;
529	<	end
530	<	else
531	<	if Scale < 0 then
532	<	begin
533	<	for i := -1 downto Scale do
534	<	Scaling := Scaling * 10;
535	<	result := Val / Scaling;
536	<	end
537	<	else
538	<	result := Val;
539	<	end;
540	<
541	<	function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
542	<	var
543	<	Scaling : Int64;
544	<	i: Integer;
545	<	Val: Int64;
546	<	begin
547	<	Scaling := 1; Val := Value;
548	<	if Scale > 0 then begin
549	<	for i := 1 to Scale do Scaling := Scaling * 10;
550	<	result := Val * Scaling;
551	<	end else if Scale < 0 then begin
552	<	for i := -1 downto Scale do Scaling := Scaling * 10;
553	<	result := Val div Scaling;
554	<	end else
555	<	result := Val;
556	<	end;
557	<
558	<	function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
559	<	var
560	<	Scaling : Int64;
561	<	i : Integer;
562	<	FractionText, PadText, CurrText: string;
563	<	begin
564	<	Result := 0;
565	<	Scaling := 1;
566	<	if Scale > 0 then
567	<	begin
568	<	for i := 1 to Scale do
569	<	Scaling := Scaling * 10;
570	<	result := Value * Scaling;
571	<	end
572	<	else
573	<	if Scale < 0 then
574	<	begin
575	<	for i := -1 downto Scale do
576	<	Scaling := Scaling * 10;
577	<	FractionText := IntToStr(abs(Value mod Scaling));
578	<	for i := Length(FractionText) to -Scale -1 do
579	<	PadText := '0' + PadText;
580	<	if Value < 0 then
581	<	CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
582	<	else
583	<	CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
584	<	try
585	<	result := StrToCurr(CurrText);
586	<	except
587	<	on E: Exception do
588	<	IBError(ibxeInvalidDataConversion, [nil]);
589	<	end;
590	<	end
591	<	else
592	<	result := Value;
593	<	end;
594	<
595	<	function TIBXSQLVAR.GetAsBoolean: boolean;
596	<	begin
597	<	result := false;
598	<	if not IsNull then
599	<	begin
600	<	if FXSQLVAR^.sqltype and (not 1) = SQL_BOOLEAN then
601	<	result := PByte(FXSQLVAR^.sqldata)^ = ISC_TRUE
602	<	else
603	<	IBError(ibxeInvalidDataConversion, [nil]);
604	<	end
605	<	end;
606	<
607	<	function TIBXSQLVAR.GetAsCurrency: Currency;
608	<	begin
609	<	result := 0;
610	<	if FSQL.Database.SQLDialect < 3 then
611	<	result := GetAsDouble
612	<	else begin
613	<	if not IsNull then
614	<	case FXSQLVAR^.sqltype and (not 1) of
615	<	SQL_TEXT, SQL_VARYING: begin
616	<	try
617	<	result := StrtoCurr(AsString);
618	<	except
619	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
620	<	end;
621	<	end;
622	<	SQL_SHORT:
623	<	result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
624	<	FXSQLVAR^.sqlscale);
625	<	SQL_LONG:
626	<	result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
627	<	FXSQLVAR^.sqlscale);
628	<	SQL_INT64:
629	<	result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
630	<	FXSQLVAR^.sqlscale);
631	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
632	<	result := Trunc(AsDouble);
633	<	else
634	<	IBError(ibxeInvalidDataConversion, [nil]);
635	<	end;
636	<	end;
637	<	end;
638	<
639	<	function TIBXSQLVAR.GetAsInt64: Int64;
640	<	begin
641	<	result := 0;
642	<	if not IsNull then
643	<	case FXSQLVAR^.sqltype and (not 1) of
644	<	SQL_TEXT, SQL_VARYING: begin
645	<	try
646	<	result := StrToInt64(AsString);
647	<	except
648	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
649	<	end;
650	<	end;
651	<	SQL_SHORT:
652	<	result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
653	<	FXSQLVAR^.sqlscale);
654	<	SQL_LONG:
655	<	result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
656	<	FXSQLVAR^.sqlscale);
657	<	SQL_INT64:
658	<	result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
659	<	FXSQLVAR^.sqlscale);
660	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
661	<	result := Trunc(AsDouble);
662	<	else
663	<	IBError(ibxeInvalidDataConversion, [nil]);
664	<	end;
665	<	end;
666	<
667	<	function TIBXSQLVAR.GetAsDateTime: TDateTime;
668	<	var
669	<	tm_date: TCTimeStructure;
670	<	msecs: word;
671	<	begin
672	<	result := 0;
673	<	if not IsNull then
674	<	case FXSQLVAR^.sqltype and (not 1) of
675	<	SQL_TEXT, SQL_VARYING: begin
676	<	try
677	<	result := StrToDate(AsString);
678	<	except
679	<	on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
680	<	end;
681	<	end;
682	<	SQL_TYPE_DATE: begin
683	<	isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
684	<	try
685	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
686	<	Word(tm_date.tm_mday));
687	<	except
688	<	on E: EConvertError do begin
689	<	IBError(ibxeInvalidDataConversion, [nil]);
690	<	end;
691	<	end;
692	<	end;
693	<	SQL_TYPE_TIME: begin
694	<	isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
695	<	try
696	<	msecs :=  (PISC_TIME(FXSQLVAR^.sqldata)^ mod 10000) div 10;
697	<	result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
698	<	Word(tm_date.tm_sec), msecs)
699	<	except
700	<	on E: EConvertError do begin
701	<	IBError(ibxeInvalidDataConversion, [nil]);
702	<	end;
703	<	end;
704	<	end;
705	<	SQL_TIMESTAMP: begin
706	<	isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
707	<	try
708	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
709	<	Word(tm_date.tm_mday));
710	<	msecs := (PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time mod 10000) div 10;
711	<	if result >= 0 then
712	<	result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
713	<	Word(tm_date.tm_sec), msecs)
714	<	else
715	<	result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
716	<	Word(tm_date.tm_sec), msecs)
717	<	except
718	<	on E: EConvertError do begin
719	<	IBError(ibxeInvalidDataConversion, [nil]);
720	<	end;
721	<	end;
722	<	end;
723	<	else
724	<	IBError(ibxeInvalidDataConversion, [nil]);
725	<	end;
726	<	end;
727	<
728	<	function TIBXSQLVAR.GetAsDouble: Double;
729	<	begin
730	<	result := 0;
731	<	if not IsNull then begin
732	<	case FXSQLVAR^.sqltype and (not 1) of
733	<	SQL_TEXT, SQL_VARYING: begin
734	<	try
735	<	result := StrToFloat(AsString);
736	<	except
737	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
738	<	end;
739	<	end;
740	<	SQL_SHORT:
741	<	result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
742	<	FXSQLVAR^.sqlscale);
743	<	SQL_LONG:
744	<	result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
745	<	FXSQLVAR^.sqlscale);
746	<	SQL_INT64:
747	<	result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
748	<	SQL_FLOAT:
749	<	result := PFloat(FXSQLVAR^.sqldata)^;
750	<	SQL_DOUBLE, SQL_D_FLOAT:
751	<	result := PDouble(FXSQLVAR^.sqldata)^;
752	<	else
753	<	IBError(ibxeInvalidDataConversion, [nil]);
754	<	end;
755	<	if  FXSQLVAR^.sqlscale <> 0 then
756	<	result :=
757	<	StrToFloat(FloatToStrF(result, fffixed, 15,
758	<	Abs(FXSQLVAR^.sqlscale) ));
759	<	end;
760	<	end;
761	<
762	<	function TIBXSQLVAR.GetAsFloat: Float;
763	<	begin
764	<	result := 0;
765	<	try
766	<	result := AsDouble;
767	<	except
768	<	on E: EOverflow do
769	<	IBError(ibxeInvalidDataConversion, [nil]);
770	<	end;
771	<	end;
772	<
773	<	function TIBXSQLVAR.GetAsLong: Long;
774	<	begin
775	<	result := 0;
776	<	if not IsNull then
777	<	case FXSQLVAR^.sqltype and (not 1) of
778	<	SQL_TEXT, SQL_VARYING: begin
779	<	try
780	<	result := StrToInt(AsString);
781	<	except
782	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
783	<	end;
784	<	end;
785	<	SQL_SHORT:
786	<	result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
787	<	FXSQLVAR^.sqlscale));
788	<	SQL_LONG:
789	<	result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
790	<	FXSQLVAR^.sqlscale));
791	<	SQL_INT64:
792	<	result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
793	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
794	<	result := Trunc(AsDouble);
795	<	else
796	<	IBError(ibxeInvalidDataConversion, [nil]);
797	<	end;
798	<	end;
799	<
800	<	function TIBXSQLVAR.GetAsPointer: Pointer;
801	<	begin
802	<	if not IsNull then
803	<	result := FXSQLVAR^.sqldata
804	<	else
805	<	result := nil;
806	<	end;
807	<
808	<	function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
809	<	begin
810	<	result.gds_quad_high := 0;
811	<	result.gds_quad_low := 0;
812	<	if not IsNull then
813	<	case FXSQLVAR^.sqltype and (not 1) of
814	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD:
815	<	result := PISC_QUAD(FXSQLVAR^.sqldata)^;
816	<	else
817	<	IBError(ibxeInvalidDataConversion, [nil]);
818	<	end;
819	<	end;
820	<
821	<	function TIBXSQLVAR.GetAsShort: Short;
822	<	begin
823	<	result := 0;
824	<	try
825	<	result := AsLong;
826	<	except
827	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
828	<	end;
829	<	end;
830	<
831	<
832	<	function TIBXSQLVAR.GetAsString: String;
833	<	var
834	<	sz: PChar;
835	<	str_len: Integer;
836	<	ss: TStringStream;
837	<	begin
838	<	result := '';
839	<	{ Check null, if so return a default string }
840	<	if not IsNull then
841	<	case FXSQLVar^.sqltype and (not 1) of
842	<	SQL_ARRAY:
843	<	result := '(Array)'; {do not localize}
844	<	SQL_BLOB: begin
845	<	ss := TStringStream.Create('');
846	<	try
847	<	SaveToStream(ss);
848	<	result := ss.DataString;
849	<	finally
850	<	ss.Free;
851	<	end;
852	<	end;
853	<	SQL_TEXT, SQL_VARYING: begin
854	<	sz := FXSQLVAR^.sqldata;
855	<	if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
856	<	str_len := FXSQLVar^.sqllen
857	<	else begin
858	<	str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
859	<	Inc(sz, 2);
860	<	end;
861	<	SetString(result, sz, str_len);
862	<	if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
863	<	result := TrimRight(result);
864	<	end;
865	<	SQL_TYPE_DATE:
866	<	case FSQL.Database.SQLDialect of
867	<	1 : result := DateTimeToStr(AsDateTime);
868	<	3 : result := DateToStr(AsDateTime);
869	<	end;
870	<	SQL_TYPE_TIME :
871	<	result := TimeToStr(AsDateTime);
872	<	SQL_TIMESTAMP:
873	<	result := DateTimeToStr(AsDateTime);
874	<	SQL_SHORT, SQL_LONG:
875	<	if FXSQLVAR^.sqlscale = 0 then
876	<	result := IntToStr(AsLong)
877	<	else if FXSQLVAR^.sqlscale >= (-4) then
878	<	result := CurrToStr(AsCurrency)
879	<	else
880	<	result := FloatToStr(AsDouble);
881	<	SQL_INT64:
882	<	if FXSQLVAR^.sqlscale = 0 then
883	<	result := IntToStr(AsInt64)
884	<	else if FXSQLVAR^.sqlscale >= (-4) then
885	<	result := CurrToStr(AsCurrency)
886	<	else
887	<	result := FloatToStr(AsDouble);
888	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
889	<	result := FloatToStr(AsDouble);
890	<	else
891	<	IBError(ibxeInvalidDataConversion, [nil]);
892	<	end;
893	<	end;
894	<
895	<	function TIBXSQLVAR.GetAsVariant: Variant;
896	<	begin
897	<	if IsNull then
898	<	result := NULL
899	<	{ Check null, if so return a default string }
900	<	else case FXSQLVar^.sqltype and (not 1) of
901	<	SQL_ARRAY:
902	<	result := '(Array)'; {do not localize}
903	<	SQL_BLOB:
904	<	result := '(Blob)'; {do not localize}
905	<	SQL_TEXT, SQL_VARYING:
906	<	result := AsString;
907	<	SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
908	<	result := AsDateTime;
909	<	SQL_SHORT, SQL_LONG:
910	<	if FXSQLVAR^.sqlscale = 0 then
911	<	result := AsLong
912	<	else if FXSQLVAR^.sqlscale >= (-4) then
913	<	result := AsCurrency
914	<	else
915	<	result := AsDouble;
916	<	SQL_INT64:
917	<	if FXSQLVAR^.sqlscale = 0 then
918	<	result := AsInt64
919	<	else if FXSQLVAR^.sqlscale >= (-4) then
920	<	result := AsCurrency
921	<	else
922	<	result := AsDouble;
923	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
924	<	result := AsDouble;
925	<	SQL_BOOLEAN:
926	<	result := AsBoolean;
927	<	else
928	<	IBError(ibxeInvalidDataConversion, [nil]);
929	<	end;
930	<	end;
931	<
932	<	function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
933	<	begin
934	<	result := FXSQLVAR;
935	<	end;
936	<
937	<	function TIBXSQLVAR.GetIsNull: Boolean;
938	<	begin
939	<	result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
940	<	end;
941	<
942	<	function TIBXSQLVAR.GetIsNullable: Boolean;
943	<	begin
944	<	result := (FXSQLVAR^.sqltype and 1 = 1);
945	<	end;
946	<
947	<	procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
948	<	var
949	<	fs: TFileStream;
950	<	begin
951	<	fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
952	<	try
953	<	LoadFromStream(fs);
954	<	finally
955	<	fs.Free;
956	<	end;
957	<	end;
958	<
959	<	procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
960	<	var
961	<	bs: TIBBlobStream;
962	<	begin
963	<	bs := TIBBlobStream.Create;
964	<	try
965	<	bs.Mode := bmWrite;
966	<	bs.Database := FSQL.Database;
967	<	bs.Transaction := FSQL.Transaction;
968	<	Stream.Seek(0, soFromBeginning);
969	<	bs.LoadFromStream(Stream);
970	<	bs.Finalize;
971	<	AsQuad := bs.BlobID;
972	<	finally
973	<	bs.Free;
974	<	end;
975	<	end;
976	<
977	<	procedure TIBXSQLVAR.SaveToFile(const FileName: String);
978	<	var
979	<	fs: TFileStream;
980	<	begin
981	<	fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
982	<	try
983	<	SaveToStream(fs);
984	<	finally
985	<	fs.Free;
986	<	end;
987	<	end;
988	<
989	<	procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
990	<	var
991	<	bs: TIBBlobStream;
992	<	begin
993	<	bs := TIBBlobStream.Create;
994	<	try
995	<	bs.Mode := bmRead;
996	<	bs.Database := FSQL.Database;
997	<	bs.Transaction := FSQL.Transaction;
998	<	bs.BlobID := AsQuad;
999	<	bs.SaveToStream(Stream);
1000	<	finally
1001	<	bs.Free;
1002	<	end;
1003	<	end;
1004	<
1005	<	function TIBXSQLVAR.GetSize: Integer;
1006	<	begin
1007	<	result := FXSQLVAR^.sqllen;
1008	<	end;
1009	<
1010	<	function TIBXSQLVAR.GetSQLType: Integer;
1011	<	begin
1012	<	result := FXSQLVAR^.sqltype and (not 1);
1013	<	end;
1014	<
1015	<	procedure TIBXSQLVAR.SetAsBoolean(AValue: boolean);
1016	<	var
1017	<	i: Integer;
1018	<	begin
1019	<	if FUniqueName then
1020	<	xSetAsBoolean(AValue)
1021	<	else
1022	<	for i := 0 to FParent.FCount - 1 do
1023	<	if FParent[i].FName = FName then
1024	<	FParent[i].xSetAsBoolean(AValue);
1025	<	end;
1026	<
1027	<	procedure TIBXSQLVAR.xSetAsCurrency(Value: Currency);
1028	<	begin
1029	<	if IsNullable then
1030	<	IsNull := False;
1031	<	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1032	<	FXSQLVAR^.sqlscale := -4;
1033	<	FXSQLVAR^.sqllen := SizeOf(Int64);
1034	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1035	<	PCurrency(FXSQLVAR^.sqldata)^ := Value;
1036	<	FModified := True;
1037	<	end;
1038	<
1039	<	procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
1040	<	var
1041	<	i: Integer;
1042	<	begin
1043	<	if FSQL.Database.SQLDialect < 3 then
1044	<	AsDouble := Value
1045	<	else
1046	<	begin
1047	<
1048	<	if FUniqueName then
1049	<	xSetAsCurrency(Value)
1050	<	else
1051	<	for i := 0 to FParent.FCount - 1 do
1052	<	if FParent[i].FName = FName then
1053	<	FParent[i].xSetAsCurrency(Value);
1054	<	end;
1055	<	end;
1056	<
1057	<	procedure TIBXSQLVAR.xSetAsInt64(Value: Int64);
1058	<	begin
1059	<	if IsNullable then
1060	<	IsNull := False;
1061	<
1062	<	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1063	<	FXSQLVAR^.sqlscale := 0;
1064	<	FXSQLVAR^.sqllen := SizeOf(Int64);
1065	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1066	<	PInt64(FXSQLVAR^.sqldata)^ := Value;
1067	<	FModified := True;
1068	<	end;
1069	<
1070	<	procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
1071	<	var
1072	<	i: Integer;
1073	<	begin
1074	<	if FUniqueName then
1075	<	xSetAsInt64(Value)
1076	<	else
1077	<	for i := 0 to FParent.FCount - 1 do
1078	<	if FParent[i].FName = FName then
1079	<	FParent[i].xSetAsInt64(Value);
1080	<	end;
1081	<
1082	<	procedure TIBXSQLVAR.xSetAsDate(Value: TDateTime);
1083	<	var
1084	<	tm_date: TCTimeStructure;
1085	<	Yr, Mn, Dy: Word;
1086	<	begin
1087	<	if IsNullable then
1088	<	IsNull := False;
1089	<
1090	<	FXSQLVAR^.sqltype := SQL_TYPE_DATE or (FXSQLVAR^.sqltype and 1);
1091	<	DecodeDate(Value, Yr, Mn, Dy);
1092	<	with tm_date do begin
1093	<	tm_sec := 0;
1094	<	tm_min := 0;
1095	<	tm_hour := 0;
1096	<	tm_mday := Dy;
1097	<	tm_mon := Mn - 1;
1098	<	tm_year := Yr - 1900;
1099	<	end;
1100	<	FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
1101	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1102	<	isc_encode_sql_date(@tm_date, PISC_DATE(FXSQLVAR^.sqldata));
1103	<	FModified := True;
1104	<	end;
1105	<
1106	<	procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
1107	<	var
1108	<	i: Integer;
1109	<	begin
1110	<	if FSQL.Database.SQLDialect < 3 then
1111	<	begin
1112	<	AsDateTime := Value;
1113	<	exit;
1114	<	end;
1115	<
1116	<	if FUniqueName then
1117	<	xSetAsDate(Value)
1118	<	else
1119	<	for i := 0 to FParent.FCount - 1 do
1120	<	if FParent[i].FName = FName then
1121	<	FParent[i].xSetAsDate(Value);
1122	<	end;
1123	<
1124	<	procedure TIBXSQLVAR.xSetAsTime(Value: TDateTime);
1125	<	var
1126	<	tm_date: TCTimeStructure;
1127	<	Hr, Mt, S, Ms: Word;
1128	<	begin
1129	<	if IsNullable then
1130	<	IsNull := False;
1131	<
1132	<	FXSQLVAR^.sqltype := SQL_TYPE_TIME or (FXSQLVAR^.sqltype and 1);
1133	<	DecodeTime(Value, Hr, Mt, S, Ms);
1134	<	with tm_date do begin
1135	<	tm_sec := S;
1136	<	tm_min := Mt;
1137	<	tm_hour := Hr;
1138	<	tm_mday := 0;
1139	<	tm_mon := 0;
1140	<	tm_year := 0;
1141	<	end;
1142	<	FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
1143	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1144	<	isc_encode_sql_time(@tm_date, PISC_TIME(FXSQLVAR^.sqldata));
1145	<	if Ms > 0 then
1146	<	Inc(PISC_TIME(FXSQLVAR^.sqldata)^,Ms*10);
1147	<	FModified := True;
1148	<	end;
1149	<
1150	<	procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
1151	<	var
1152	<	i: Integer;
1153	<	begin
1154	<	if FSQL.Database.SQLDialect < 3 then
1155	<	begin
1156	<	AsDateTime := Value;
1157	<	exit;
1158	<	end;
1159	<
1160	<	if FUniqueName then
1161	<	xSetAsTime(Value)
1162	<	else
1163	<	for i := 0 to FParent.FCount - 1 do
1164	<	if FParent[i].FName = FName then
1165	<	FParent[i].xSetAsTime(Value);
1166	<	end;
1167	<
1168	<	procedure TIBXSQLVAR.xSetAsDateTime(Value: TDateTime);
1169	<	var
1170	<	tm_date: TCTimeStructure;
1171	<	Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
1172	<	begin
1173	<	if IsNullable then
1174	<	IsNull := False;
1175	<
1176	<	FXSQLVAR^.sqltype := SQL_TIMESTAMP or (FXSQLVAR^.sqltype and 1);
1177	<	DecodeDate(Value, Yr, Mn, Dy);
1178	<	DecodeTime(Value, Hr, Mt, S, Ms);
1179	<	with tm_date do begin
1180	<	tm_sec := S;
1181	<	tm_min := Mt;
1182	<	tm_hour := Hr;
1183	<	tm_mday := Dy;
1184	<	tm_mon := Mn - 1;
1185	<	tm_year := Yr - 1900;
1186	<	end;
1187	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1188	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1189	<	isc_encode_date(@tm_date, PISC_QUAD(FXSQLVAR^.sqldata));
1190	<	if Ms > 0 then
1191	<	Inc(PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time,Ms*10);
1192	<	FModified := True;
1193	<	end;
1194	<
1195	<	procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
1196	<	var
1197	<	i: Integer;
1198	<	begin
1199	<	if FUniqueName then
1200	<	xSetAsDateTime(value)
1201	<	else
1202	<	for i := 0 to FParent.FCount - 1 do
1203	<	if FParent[i].FName = FName then
1204	<	FParent[i].xSetAsDateTime(Value);
1205	<	end;
1206	<
1207	<	procedure TIBXSQLVAR.xSetAsDouble(Value: Double);
1208	<	begin
1209	<	if IsNullable then
1210	<	IsNull := False;
1211	<
1212	<	FXSQLVAR^.sqltype := SQL_DOUBLE or (FXSQLVAR^.sqltype and 1);
1213	<	FXSQLVAR^.sqllen := SizeOf(Double);
1214	<	FXSQLVAR^.sqlscale := 0;
1215	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1216	<	PDouble(FXSQLVAR^.sqldata)^ := Value;
1217	<	FModified := True;
1218	<	end;
1219	<
1220	<	procedure TIBXSQLVAR.SetAsDouble(Value: Double);
1221	<	var
1222	<	i: Integer;
1223	<	begin
1224	<	if FUniqueName then
1225	<	xSetAsDouble(Value)
1226	<	else
1227	<	for i := 0 to FParent.FCount - 1 do
1228	<	if FParent[i].FName = FName then
1229	<	FParent[i].xSetAsDouble(Value);
1230	<	end;
1231	<
1232	<	procedure TIBXSQLVAR.xSetAsFloat(Value: Float);
1233	<	begin
1234	<	if IsNullable then
1235	<	IsNull := False;
1236	<
1237	<	FXSQLVAR^.sqltype := SQL_FLOAT or (FXSQLVAR^.sqltype and 1);
1238	<	FXSQLVAR^.sqllen := SizeOf(Float);
1239	<	FXSQLVAR^.sqlscale := 0;
1240	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1241	<	PSingle(FXSQLVAR^.sqldata)^ := Value;
1242	<	FModified := True;
1243	<	end;
1244	<
1245	<	procedure TIBXSQLVAR.SetAsFloat(Value: Float);
1246	<	var
1247	<	i: Integer;
1248	<	begin
1249	<	if FUniqueName then
1250	<	xSetAsFloat(Value)
1251	<	else
1252	<	for i := 0 to FParent.FCount - 1 do
1253	<	if FParent[i].FName = FName then
1254	<	FParent[i].xSetAsFloat(Value);
1255	<	end;
1256	<
1257	<	procedure TIBXSQLVAR.xSetAsLong(Value: Long);
1258	<	begin
1259	<	if IsNullable then
1260	<	IsNull := False;
1261	<
1262	<	FXSQLVAR^.sqltype := SQL_LONG or (FXSQLVAR^.sqltype and 1);
1263	<	FXSQLVAR^.sqllen := SizeOf(Long);
1264	<	FXSQLVAR^.sqlscale := 0;
1265	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1266	<	PLong(FXSQLVAR^.sqldata)^ := Value;
1267	<	FModified := True;
1268	<	end;
1269	<
1270	<	procedure TIBXSQLVAR.SetAsLong(Value: Long);
1271	<	var
1272	<	i: Integer;
1273	<	begin
1274	<	if FUniqueName then
1275	<	xSetAsLong(Value)
1276	<	else
1277	<	for i := 0 to FParent.FCount - 1 do
1278	<	if FParent[i].FName = FName then
1279	<	FParent[i].xSetAsLong(Value);
1280	<	end;
1281	<
1282	<	procedure TIBXSQLVAR.xSetAsPointer(Value: Pointer);
1283	<	begin
1284	<	if IsNullable and (Value = nil) then
1285	<	IsNull := True
1286	<	else begin
1287	<	IsNull := False;
1288	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1289	<	Move(Value^, FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1290	<	end;
1291	<	FModified := True;
1292	<	end;
1293	<
1294	<	procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
1295	<	var
1296	<	i: Integer;
1297	<	begin
1298	<	if FUniqueName then
1299	<	xSetAsPointer(Value)
1300	<	else
1301	<	for i := 0 to FParent.FCount - 1 do
1302	<	if FParent[i].FName = FName then
1303	<	FParent[i].xSetAsPointer(Value);
1304	<	end;
1305	<
1306	<	procedure TIBXSQLVAR.xSetAsQuad(Value: TISC_QUAD);
1307	<	begin
1308	<	if IsNullable then
1309	<	IsNull := False;
1310	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
1311	<	(FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
1312	<	IBError(ibxeInvalidDataConversion, [nil]);
1313	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1314	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1315	<	PISC_QUAD(FXSQLVAR^.sqldata)^ := Value;
1316	<	FModified := True;
1317	<	end;
1318	<
1319	<	procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
1320	<	var
1321	<	i: Integer;
1322	<	begin
1323	<	if FUniqueName then
1324	<	xSetAsQuad(Value)
1325	<	else
1326	<	for i := 0 to FParent.FCount - 1 do
1327	<	if FParent[i].FName = FName then
1328	<	FParent[i].xSetAsQuad(Value);
1329	<	end;
1330	<
1331	<	procedure TIBXSQLVAR.xSetAsShort(Value: Short);
1332	<	begin
1333	<	if IsNullable then
1334	<	IsNull := False;
1335	<
1336	<	FXSQLVAR^.sqltype := SQL_SHORT or (FXSQLVAR^.sqltype and 1);
1337	<	FXSQLVAR^.sqllen := SizeOf(Short);
1338	<	FXSQLVAR^.sqlscale := 0;
1339	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1340	<	PShort(FXSQLVAR^.sqldata)^ := Value;
1341	<	FModified := True;
1342	<	end;
1343	<
1344	<	procedure TIBXSQLVAR.SetAsShort(Value: Short);
1345	<	var
1346	<	i: Integer;
1347	<	begin
1348	<	if FUniqueName then
1349	<	xSetAsShort(Value)
1350	<	else
1351	<	for i := 0 to FParent.FCount - 1 do
1352	<	if FParent[i].FName = FName then
1353	<	FParent[i].xSetAsShort(Value);
1354	<	end;
1355	<
1356	<	procedure TIBXSQLVAR.xSetAsString(Value: String);
1357	<	var
1358	<	stype: Integer;
1359	<	ss: TStringStream;
1360	<
1361	<	procedure SetStringValue;
1362	<	var
1363	<	i: Integer;
1364	<	begin
1365	<	if (FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
1366	<	(FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
1367	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen)
1368	<	else begin
1369	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1370	<	FXSQLVAR^.sqllen := Length(Value);
1371	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen + 1);
1372	<	if (Length(Value) > 0) then
1373	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1374	<	end;
1375	<	FModified := True;
1376	<	end;
1377	<
1378	<	begin
1379	<	if IsNullable then
1380	<	IsNull := False;
1381	<
1382	<	stype := FXSQLVAR^.sqltype and (not 1);
1383	<	if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
1384	<	SetStringValue
1385	<	else begin
1386	<	if (stype = SQL_BLOB) then
1387	<	begin
1388	<	ss := TStringStream.Create(Value);
1389	<	try
1390	<	LoadFromStream(ss);
1391	<	finally
1392	<	ss.Free;
1393	<	end;
1394	<	end
1395	<	else if Value = '' then
1396	<	IsNull := True
1397	<	else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
1398	<	(stype = SQL_TYPE_TIME) then
1399	<	xSetAsDateTime(StrToDateTime(Value))
1400	<	else
1401	<	SetStringValue;
1402	<	end;
1403	<	end;
1404	<
1405	<	procedure TIBXSQLVAR.SetAsString(Value: String);
1406	<	var
1407	<	i: integer;
1408	<	begin
1409	<	if FUniqueName then
1410	<	xSetAsString(Value)
1411	<	else
1412	<	for i := 0 to FParent.FCount - 1 do
1413	<	if FParent[i].FName = FName then
1414	<	FParent[i].xSetAsString(Value);
1415	<	end;
1416	<
1417	<	procedure TIBXSQLVAR.xSetAsVariant(Value: Variant);
1418	<	begin
1419	<	if VarIsNull(Value) then
1420	<	IsNull := True
1421	<	else case VarType(Value) of
1422	<	varEmpty, varNull:
1423	<	IsNull := True;
1424	<	varSmallint, varInteger, varByte,
1425	<	varWord, varShortInt:
1426	<	AsLong := Value;
1427	<	varInt64:
1428	<	AsInt64 := Value;
1429	<	varSingle, varDouble:
1430	<	AsDouble := Value;
1431	<	varCurrency:
1432	<	AsCurrency := Value;
1433	<	varBoolean:
1434	<	AsBoolean := Value;
1435	<	varDate:
1436	<	AsDateTime := Value;
1437	<	varOleStr, varString:
1438	<	AsString := Value;
1439	<	varArray:
1440	<	IBError(ibxeNotSupported, [nil]);
1441	<	varByRef, varDispatch, varError, varUnknown, varVariant:
1442	<	IBError(ibxeNotPermitted, [nil]);
1443	<	end;
1444	<	end;
1445	<
1446	<	procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
1447	<	var
1448	<	i: integer;
1449	<	begin
1450	<	if FUniqueName then
1451	<	xSetAsVariant(Value)
1452	<	else
1453	<	for i := 0 to FParent.FCount - 1 do
1454	<	if FParent[i].FName = FName then
1455	<	FParent[i].xSetAsVariant(Value);
1456	<	end;
1457	<
1458	<	procedure TIBXSQLVAR.xSetAsXSQLVAR(Value: PXSQLVAR);
1459	<	var
1460	<	sqlind: PShort;
1461	<	sqldata: PChar;
1462	<	local_sqllen: Integer;
1463	<	begin
1464	<	sqlind := FXSQLVAR^.sqlind;
1465	<	sqldata := FXSQLVAR^.sqldata;
1466	<	Move(Value^, FXSQLVAR^, SizeOf(TXSQLVAR));
1467	<	FXSQLVAR^.sqlind := sqlind;
1468	<	FXSQLVAR^.sqldata := sqldata;
1469	<	if (Value^.sqltype and 1 = 1) then
1470	<	begin
1471	<	if (FXSQLVAR^.sqlind = nil) then
1472	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1473	<	FXSQLVAR^.sqlind^ := Value^.sqlind^;
1474	<	end
1475	<	else
1476	<	if (FXSQLVAR^.sqlind <> nil) then
1477	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1478	<	if ((FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
1479	<	local_sqllen := FXSQLVAR^.sqllen + 2
1480	<	else
1481	<	local_sqllen := FXSQLVAR^.sqllen;
1482	<	FXSQLVAR^.sqlscale := Value^.sqlscale;
1483	<	IBAlloc(FXSQLVAR^.sqldata, 0, local_sqllen);
1484	<	Move(Value^.sqldata[0], FXSQLVAR^.sqldata[0], local_sqllen);
1485	<	FModified := True;
1486	<	end;
1487	<
1488	<	procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
1489	<	var
1490	<	i: Integer;
1491	<	begin
1492	<	if FUniqueName then
1493	<	xSetAsXSQLVAR(Value)
1494	<	else
1495	<	for i := 0 to FParent.FCount - 1 do
1496	<	if FParent[i].FName = FName then
1497	<	FParent[i].xSetAsXSQLVAR(Value);
1498	<	end;
1499	<
1500	<	procedure TIBXSQLVAR.xSetIsNull(Value: Boolean);
1501	<	begin
1502	<	if Value then
1503	<	begin
1504	<	if not IsNullable then
1505	<	IsNullable := True;
1506	<
1507	<	if Assigned(FXSQLVAR^.sqlind) then
1508	<	FXSQLVAR^.sqlind^ := -1;
1509	<	FModified := True;
1510	<	end
1511	<	else
1512	<	if ((not Value) and IsNullable) then
1513	<	begin
1514	<	if Assigned(FXSQLVAR^.sqlind) then
1515	<	FXSQLVAR^.sqlind^ := 0;
1516	<	FModified := True;
1517	<	end;
1518	<	end;
1519	<
1520	<	procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
1521	<	var
1522	<	i: Integer;
1523	<	begin
1524	<	if FUniqueName then
1525	<	xSetIsNull(Value)
1526	<	else
1527	<	for i := 0 to FParent.FCount - 1 do
1528	<	if FParent[i].FName = FName then
1529	<	FParent[i].xSetIsNull(Value);
1530	<	end;
1531	<
1532	<	procedure TIBXSQLVAR.xSetIsNullable(Value: Boolean);
1533	<	begin
1534	<	if (Value <> IsNullable) then
1535	<	begin
1536	<	if Value then
1537	<	begin
1538	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype or 1;
1539	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1540	<	end
1541	<	else
1542	<	begin
1543	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype and (not 1);
1544	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1545	<	end;
1546	<	end;
1547	<	end;
1548	<
1549	<	procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
1550	<	var
1551	<	i: Integer;
1552	<	begin
1553	<	if FUniqueName then
1554	<	xSetIsNullable(Value)
1555	<	else
1556	<	for i := 0 to FParent.FCount - 1 do
1557	<	if FParent[i].FName = FName then
1558	<	FParent[i].xSetIsNullable(Value);
1559	<	end;
1560	<
1561	<	procedure TIBXSQLVAR.xSetAsBoolean(AValue: boolean);
1562	<	begin
1563	<	if IsNullable then
1564	<	IsNull := False;
1565	<
1566	<	FXSQLVAR^.sqltype := SQL_BOOLEAN;
1567	<	FXSQLVAR^.sqllen := 1;
1568	<	FXSQLVAR^.sqlscale := 0;
1569	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1570	<	if AValue then
1571	<	PByte(FXSQLVAR^.sqldata)^ := ISC_TRUE
1572	<	else
1573	<	PByte(FXSQLVAR^.sqldata)^ := ISC_FALSE;
1574	<	FModified := True;
1575	<	end;
1576	<
1577	<	procedure TIBXSQLVAR.Clear;
1578	<	begin
1579	<	IsNull := true;
1580	<	end;
1581	<
251	>	Variants, IBSQLMonitor, FBMessages, IBCustomDataSet;
252
253	<	{ TIBXSQLDA }
1584	<	constructor TIBXSQLDA.Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
1585	<	begin
1586	<	inherited Create;
1587	<	FSQL := Query;
1588	<	FSize := 0;
1589	<	FUniqueRelationName := '';
1590	<	FInputSQLDA := sqldaType = daInput;
1591	<	end;
1592	<
1593	<	destructor TIBXSQLDA.Destroy;
1594	<	var
1595	<	i: Integer;
1596	<	begin
1597	<	if FXSQLDA <> nil then
1598	<	begin
1599	<	for i := 0 to FSize - 1 do
1600	<	begin
1601	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
1602	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
1603	<	FXSQLVARs[i].Free ;
1604	<	end;
1605	<	FreeMem(FXSQLDA);
1606	<	FXSQLDA := nil;
1607	<	FXSQLVARs := nil;
1608	<	end;
1609	<	inherited Destroy;
1610	<	end;
1611	<
1612	<	procedure TIBXSQLDA.SetParamName(FieldName: String; Idx: Integer;
1613	<	UniqueName: boolean);
1614	<	var
1615	<	fn: string;
1616	<	begin
1617	<	{$ifdef UseCaseSensitiveParamName}
1618	<	FXSQLVARs[Idx].FName := AnsiUpperCase(FieldName);
1619	<	{$else}
1620	<	FXSQLVARs[Idx].FName := FieldName;
1621	<	{$endif}
1622	<	FXSQLVARs[Idx].FIndex := Idx;
1623	<	FXSQLVARs[Idx].FUniqueName :=  UniqueName
1624	<	end;
1625	<
1626	<	function TIBXSQLDA.GetModified: Boolean;
253	>	procedure IBAlloc(var P; OldSize, NewSize: Integer);
254		var
255		i: Integer;
256		begin
257	<	result := False;
258	<	for i := 0 to FCount - 1 do
1632	<	if FXSQLVARs[i].Modified then
1633	<	begin
1634	<	result := True;
1635	<	exit;
1636	<	end;
1637	<	end;
1638	<
1639	<	function TIBXSQLDA.GetRecordSize: Integer;
1640	<	begin
1641	<	result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
1642	<	end;
1643	<
1644	<	function TIBXSQLDA.GetXSQLDA: PXSQLDA;
1645	<	begin
1646	<	result := FXSQLDA;
1647	<	end;
1648	<
1649	<	function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
1650	<	begin
1651	<	if (Idx < 0) or (Idx >= FCount) then
1652	<	IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
1653	<	result := FXSQLVARs[Idx]
1654	<	end;
1655	<
1656	<	function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
1657	<	begin
1658	<	result := GetXSQLVARByName(Idx);
1659	<	if result = nil then
1660	<	IBError(ibxeFieldNotFound, [Idx]);
1661	<	end;
1662	<
1663	<	function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
1664	<	var
1665	<	s: String;
1666	<	i: Integer;
1667	<	begin
1668	<	{$ifdef ALLOWDIALECT3PARAMNAMES}
1669	<	s := FormatIdentifierValueNC(FSQL.Database.SQLDialect, Idx);
1670	<	{$else}
1671	<	{$ifdef UseCaseSensitiveParamName}
1672	<	s := AnsiUpperCase(Idx);
1673	<	{$else}
1674	<	s := Idx;
1675	<	{$endif}
1676	<	{$endif}
1677	<	for i := 0 to FCount - 1 do
1678	<	if Vars[i].FName = s then
1679	<	begin
1680	<	Result := FXSQLVARs[i];
1681	<	Exit;
1682	<	end;
1683	<	Result := nil;
1684	<	end;
1685	<
1686	<	procedure TIBXSQLDA.Initialize;
1687	<
1688	<	function VarByName(idx: string; limit: integer): TIBXSQLVAR;
1689	<	var
1690	<	k: integer;
1691	<	begin
1692	<	for k := 0 to limit do
1693	<	if FXSQLVARs[k].FName = idx then
1694	<	begin
1695	<	Result := FXSQLVARs[k];
1696	<	Exit;
1697	<	end;
1698	<	Result := nil;
1699	<	end;
1700	<
1701	<	var
1702	<	i, j, j_len: Integer;
1703	<	st: String;
1704	<	bUnique: Boolean;
1705	<	sBaseName: string;
1706	<	begin
1707	<	bUnique := True;
1708	<	if FXSQLDA <> nil then
1709	<	begin
1710	<	for i := 0 to FCount - 1 do
1711	<	begin
1712	<	with FXSQLVARs[i].Data^ do
1713	<	begin
1714	<
1715	<	{First get the unique relation name, if any}
1716	<
1717	<	if bUnique and (strpas(relname) <> '') then
1718	<	begin
1719	<	if FUniqueRelationName = '' then
1720	<	FUniqueRelationName := strpas(relname)
1721	<	else
1722	<	if strpas(relname) <> FUniqueRelationName then
1723	<	begin
1724	<	FUniqueRelationName := '';
1725	<	bUnique := False;
1726	<	end;
1727	<	end;
1728	<
1729	<	{If an output SQLDA then copy the aliasnames to the FName list. Ensure
1730	<	that they are all upper case only and disambiguated.
1731	<	}
1732	<
1733	<	if not FInputSQLDA then
1734	<	begin
1735	<	st := Space2Underscore(AnsiUppercase(strpas(aliasname)));
1736	<	if st = '' then
1737	<	begin
1738	<	sBaseName := 'F_'; {do not localize}
1739	<	aliasname_length := 2;
1740	<	j := 1; j_len := 1;
1741	<	st := sBaseName + IntToStr(j);
1742	<	end
1743	<	else
1744	<	begin
1745	<	j := 0; j_len := 0;
1746	<	sBaseName := st;
1747	<	end;
1748	<
1749	<	{Look for other columns with the same name and make unique}
1750	<
1751	<	while VarByName(st,i-1) <> nil do
1752	<	begin
1753	<	Inc(j);
1754	<	j_len := Length(IntToStr(j));
1755	<	if j_len + Length(sBaseName) > 31 then
1756	<	st := Copy(sBaseName, 1, 31 - j_len) + IntToStr(j)
1757	<	else
1758	<	st := sBaseName + IntToStr(j);
1759	<	end;
1760	<
1761	<	FXSQLVARs[i].FName := st;
1762	<	end;
1763	<
1764	<	{Finally initialise the XSQLVAR}
1765	<
1766	<	FXSQLVARs[i].FIndex := i;
1767	<
1768	<	case sqltype and (not 1) of
1769	<	SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
1770	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT, SQL_BOOLEAN,
1771	<	SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
1772	<	if (sqllen = 0) then
1773	<	{ Make sure you get a valid pointer anyway
1774	<	select '' from foo }
1775	<	IBAlloc(sqldata, 0, 1)
1776	<	else
1777	<	IBAlloc(sqldata, 0, sqllen)
1778	<	end;
1779	<	SQL_VARYING: begin
1780	<	IBAlloc(sqldata, 0, sqllen + 2);
1781	<	end;
1782	<	else
1783	<	IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
1784	<	end;
1785	<	if (sqltype and 1 = 1) then
1786	<	IBAlloc(sqlind, 0, SizeOf(Short))
1787	<	else
1788	<	if (sqlind <> nil) then
1789	<	ReallocMem(sqlind, 0);
1790	<	end;
1791	<	end;
1792	<	end;
1793	<	end;
1794	<
1795	<	procedure TIBXSQLDA.SetCount(Value: Integer);
1796	<	var
1797	<	i, OldSize: Integer;
1798	<	p : PXSQLVAR;
1799	<	begin
1800	<	FCount := Value;
1801	<	if FCount = 0 then
1802	<	FUniqueRelationName := ''
1803	<	else
1804	<	begin
1805	<	if FSize > 0 then
1806	<	OldSize := XSQLDA_LENGTH(FSize)
1807	<	else
1808	<	OldSize := 0;
1809	<	if FCount > FSize then
1810	<	begin
1811	<	IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
1812	<	SetLength(FXSQLVARs, FCount);
1813	<	FXSQLDA^.version := SQLDA_VERSION1;
1814	<	p := @FXSQLDA^.sqlvar[0];
1815	<	for i := 0 to FCount - 1 do
1816	<	begin
1817	<	if i >= FSize then
1818	<	FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
1819	<	FXSQLVARs[i].FXSQLVAR := p;
1820	<	p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
1821	<	end;
1822	<	FSize := FCount;
1823	<	end;
1824	<	if FSize > 0 then
1825	<	begin
1826	<	FXSQLDA^.sqln := Value;
1827	<	FXSQLDA^.sqld := Value;
1828	<	end;
1829	<	end;
257	>	ReallocMem(Pointer(P), NewSize);
258	>	for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
259		end;
260
261		{ TIBOutputDelimitedFile }
#	Line 1872 | 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 2065 | 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		{$ENDIF}
502	<	if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
502	>	if BytesWritten <> DWORD(Columns[i].GetSize) then
503		exit;
504		end;
505		result := True;
#	Line 2105 | Line 534 | begin
534		for i := 0 to Params.Count - 1 do
535		begin
536		{$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 2139 | Line 568 | end;
568		constructor TIBSQL.Create(AOwner: TComponent);
569		begin
570		inherited Create(AOwner);
2142	–	FIBLoaded := False;
2143	–	CheckIBLoaded;
2144	–	FIBLoaded := True;
571		FGenerateParamNames := False;
572		FGoToFirstRecordOnExecute := True;
573		FBase := TIBBase.Create(Self);
574		FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
575		FBase.BeforeTransactionEnd := BeforeTransactionEnd;
2150	–	FBOF := False;
2151	–	FEOF := False;
2152	–	FPrepared := False;
576		FRecordCount := 0;
577		FSQL := TStringList.Create;
578		TStringList(FSQL).OnChanging := SQLChanging;
579	<	FProcessedSQL := TStringList.Create;
2157	<	FHandle := nil;
2158	<	FSQLParams := TIBXSQLDA.Create(self,daInput);
2159	<	FSQLRecord := TIBXSQLDA.Create(self,daOutput);
2160	<	FSQLType := SQLUnknown;
579	>	TStringList(FSQL).OnChange := SQLChanged;
580		FParamCheck := True;
2162	–	FCursor := Name + RandomString(8);
581		if AOwner is TIBDatabase then
582		Database := TIBDatabase(AOwner)
583		else
#	Line 2169 | Line 587 | end;
587
588		destructor TIBSQL.Destroy;
589		begin
590	<	if FIBLoaded then
591	<	begin
592	<	if (FOpen) then
2175	<	Close;
2176	<	if (FHandle <> nil) then
2177	<	FreeHandle;
2178	<	FSQL.Free;
2179	<	FProcessedSQL.Free;
2180	<	FBase.Free;
2181	<	FSQLParams.Free;
2182	<	FSQLRecord.Free;
2183	<	end;
590	>	FreeHandle;
591	>	FSQL.Free;
592	>	FBase.Free;
593		inherited Destroy;
594		end;
595
#	Line 2188 | 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 2200 | 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 2217 | 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;
2236	–	var
2237	–	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(
2246	<	[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
2247	<	IBDatabaseError;
2248	<	end;
2249	<	finally
2250	<	FEOF := False;
2251	<	FBOF := False;
2252	<	FOpen := False;
2253	<	FRecordCount := 0;
2254	<	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
2264	<	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 2283 | Line 690 | end;
690
691		procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
692		begin
693	<	if (FHandle <> nil) then begin
2287	<	Close;
2288	<	FreeHandle;
2289	<	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,
2320	<	@FHandle,
2321	<	Database.SQLDialect,
2322	<	FSQLParams.AsXSQLDA,
2323	<	FSQLRecord.AsXSQLDA), True);
2324	<	(*      if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
2325	<	begin
2326	<	{ Sometimes a prepared stored procedure appears to get
2327	<	off sync on the server ....This code is meant to try
2328	<	to work around the problem simply by "retrying". This
2329	<	need to be reproduced and fixed.
2330	<	}
2331	<	isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2332	<	PChar(FProcessedSQL.Text), 1, nil);
2333	<	Call(isc_dsql_execute2(StatusVector,
2334	<	TRHandle,
2335	<	@FHandle,
2336	<	Database.SQLDialect,
2337	<	FSQLParams.AsXSQLDA,
2338	<	FSQLRecord.AsXSQLDA), True);
2339	<	end;  *)
2340	<	end
2341	<	else
2342	<	Call(isc_dsql_execute(StatusVector,
2343	<	TRHandle,
2344	<	@FHandle,
2345	<	Database.SQLDialect,
2346	<	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	<	//  writeln('Rows Affected = ',RowsAffected);
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;
2360	<	var
2361	<	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]);
2366	–	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;
2390	<	var
2391	<	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
2405	<	Close;
2406	<	raise;
2407	<	end;
2408	<	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;
2419	–	var
2420	–	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
2430	<	isc_res :=
2431	<	Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
2432	<	if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
2433	<	IBDataBaseError;
2434	<	end;
2435	<	finally
2436	<	FPrepared := False;
2437	<	FHandle := nil;
2438	<	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 2443 | Line 836 | begin
836		result := FBase.Database;
837		end;
838
2446	–	function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
2447	–	begin
2448	–	result := FBase.DBHandle;
2449	–	end;
2450	–
839		function TIBSQL.GetPlan: String;
2452	–	var
2453	–	result_buffer: array[0..16384] of Char;
2454	–	result_length, i: Integer;
2455	–	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 := isc_info_sql_get_plan;
2464	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
2465	<	SizeOf(result_buffer), result_buffer), True);
2466	<	if (result_buffer[0] <> isc_info_sql_get_plan) then
2467	<	IBError(ibxeUnknownError, [nil]);
2468	<	result_length := isc_vax_integer(@result_buffer[1], 2);
2469	<	SetString(result, nil, result_length);
2470	<	for i := 1 to result_length do
2471	<	result[i] := result_buffer[i + 2];
2472	<	result := Trim(result);
2473	<	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	<	info_request: Char;
2484	<	RB: TResultBuffer;
857	>	SelectCount, InsertCount, UpdateCount, DeleteCount: integer;
858		begin
859		if not Prepared then
860	<	result := -1
861	<	else begin
862	<	RB := TResultBuffer.Create;
863	<	try
864	<	info_request := isc_info_sql_records;
2492	<	if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
2493	<	RB.Size, RB.buffer) > 0 then
2494	<	IBDatabaseError;
2495	<	case SQLType of
2496	<	SQLInsert, SQLUpdate: {Covers Insert or Update as well as individual update}
2497	<	Result := RB.GetValue(isc_info_sql_records, isc_info_req_insert_count)+
2498	<	RB.GetValue(isc_info_sql_records, isc_info_req_update_count);
2499	<	SQLDelete:
2500	<	Result := RB.GetValue(isc_info_sql_records, isc_info_req_delete_count);
2501	<	SQLExecProcedure:
2502	<	Result :=  RB.GetValue(isc_info_sql_records, isc_info_req_insert_count) +
2503	<	RB.GetValue(isc_info_sql_records, isc_info_req_update_count) +
2504	<	RB.GetValue(isc_info_sql_records, isc_info_req_delete_count);
2505	<	else
2506	<	Result := 0;
2507	<	end;
2508	<	finally
2509	<	RB.Free;
2510	<	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 2523 | Line 877 | begin
877		result := FBase.Transaction;
878		end;
879
2526	–	function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
2527	–	begin
2528	–	result := FBase.TRHandle;
2529	–	end;
2530	–
2531	–	{
2532	–	Preprocess SQL
2533	–	Using FSQL, process the typed SQL and put the process SQL
2534	–	in FProcessedSQL and parameter names in FSQLParams
2535	–	}
2536	–	procedure TIBSQL.PreprocessSQL;
2537	–	var
2538	–	cCurChar, cNextChar, cQuoteChar: Char;
2539	–	sSQL, sProcessedSQL, sParamName: String;
2540	–	i, iLenSQL, iSQLPos: Integer;
2541	–	iCurState {$ifdef ALLOWDIALECT3PARAMNAMES}, iCurParamState {$endif}: Integer;
2542	–	iParamSuffix: Integer;
2543	–	slNames: TStrings;
2544	–
2545	–	const
2546	–	DefaultState = 0;
2547	–	CommentState = 1;
2548	–	QuoteState = 2;
2549	–	ParamState = 3;
2550	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2551	–	ParamDefaultState = 0;
2552	–	ParamQuoteState = 1;
2553	–	{$endif}
2554	–
2555	–	procedure AddToProcessedSQL(cChar: Char);
2556	–	begin
2557	–	sProcessedSQL[iSQLPos] := cChar;
2558	–	Inc(iSQLPos);
2559	–	end;
2560	–
2561	–	begin
2562	–	sParamName := '';
2563	–	slNames := TStringList.Create;
2564	–	try
2565	–	{ Do some initializations of variables }
2566	–	iParamSuffix := 0;
2567	–	cQuoteChar := '''';
2568	–	sSQL := FSQL.Text;
2569	–	iLenSQL := Length(sSQL);
2570	–	SetString(sProcessedSQL, nil, iLenSQL + 1);
2571	–	i := 1;
2572	–	iSQLPos := 1;
2573	–	iCurState := DefaultState;
2574	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2575	–	iCurParamState := ParamDefaultState;
2576	–	{$endif}
2577	–	{ Now, traverse through the SQL string, character by character,
2578	–	picking out the parameters and formatting correctly for InterBase }
2579	–	while (i <= iLenSQL) do begin
2580	–	{ Get the current token and a look-ahead }
2581	–	cCurChar := sSQL[i];
2582	–	if i = iLenSQL then
2583	–	cNextChar := #0
2584	–	else
2585	–	cNextChar := sSQL[i + 1];
2586	–	{ Now act based on the current state }
2587	–	case iCurState of
2588	–	DefaultState: begin
2589	–	case cCurChar of
2590	–	'''', '"': begin
2591	–	cQuoteChar := cCurChar;
2592	–	iCurState := QuoteState;
2593	–	end;
2594	–	'?', ':': begin
2595	–	iCurState := ParamState;
2596	–	AddToProcessedSQL('?');
2597	–	end;
2598	–	'/': if (cNextChar = '*') then begin
2599	–	AddToProcessedSQL(cCurChar);
2600	–	Inc(i);
2601	–	iCurState := CommentState;
2602	–	end;
2603	–	end;
2604	–	end;
2605	–	CommentState: begin
2606	–	if (cNextChar = #0) then
2607	–	IBError(ibxeSQLParseError, [SEOFInComment])
2608	–	else if (cCurChar = '*') then begin
2609	–	if (cNextChar = '/') then
2610	–	iCurState := DefaultState;
2611	–	end;
2612	–	end;
2613	–	QuoteState: begin
2614	–	if cNextChar = #0 then
2615	–	IBError(ibxeSQLParseError, [SEOFInString])
2616	–	else if (cCurChar = cQuoteChar) then begin
2617	–	if (cNextChar = cQuoteChar) then begin
2618	–	AddToProcessedSQL(cCurChar);
2619	–	Inc(i);
2620	–	end else
2621	–	iCurState := DefaultState;
2622	–	end;
2623	–	end;
2624	–	ParamState:
2625	–	begin
2626	–	{ collect the name of the parameter }
2627	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2628	–	if iCurParamState = ParamDefaultState then
2629	–	begin
2630	–	if cCurChar = '"' then
2631	–	iCurParamState := ParamQuoteState
2632	–	else
2633	–	{$endif}
2634	–	if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
2635	–	sParamName := sParamName + cCurChar
2636	–	else if FGenerateParamNames then
2637	–	begin
2638	–	sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
2639	–	Inc(iParamSuffix);
2640	–	iCurState := DefaultState;
2641	–	slNames.AddObject(sParamName,self); //Note local convention
2642	–	//add pointer to self to mark entry
2643	–	sParamName := '';
2644	–	end
2645	–	else
2646	–	IBError(ibxeSQLParseError, [SParamNameExpected]);
2647	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2648	–	end
2649	–	else begin
2650	–	{ determine if Quoted parameter name is finished }
2651	–	if cCurChar = '"' then
2652	–	begin
2653	–	Inc(i);
2654	–	slNames.Add(sParamName);
2655	–	SParamName := '';
2656	–	iCurParamState := ParamDefaultState;
2657	–	iCurState := DefaultState;
2658	–	end
2659	–	else
2660	–	sParamName := sParamName + cCurChar
2661	–	end;
2662	–	{$endif}
2663	–	{ determine if the unquoted parameter name is finished }
2664	–	if {$ifdef ALLOWDIALECT3PARAMNAMES}(iCurParamState <> ParamQuoteState) and {$endif}
2665	–	(iCurState <> DefaultState) then
2666	–	begin
2667	–	if not (cNextChar in ['A'..'Z', 'a'..'z',
2668	–	'0'..'9', '_', '$']) then begin
2669	–	Inc(i);
2670	–	iCurState := DefaultState;
2671	–	slNames.Add(sParamName);
2672	–	sParamName := '';
2673	–	end;
2674	–	end;
2675	–	end;
2676	–	end;
2677	–	if iCurState <> ParamState then
2678	–	AddToProcessedSQL(sSQL[i]);
2679	–	Inc(i);
2680	–	end;
2681	–	AddToProcessedSQL(#0);
2682	–	FSQLParams.Count := slNames.Count;
2683	–	for i := 0 to slNames.Count - 1 do
2684	–	FSQLParams.SetParamName(slNames[i], i,FUniqueParamNames or (slNames.Objects[i] <> nil));
2685	–	FProcessedSQL.Text := sProcessedSQL;
2686	–	finally
2687	–	slNames.Free;
2688	–	end;
2689	–	end;
2690	–
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;
2697	–	var
2698	–	stmt_len: Integer;
2699	–	res_buffer: array[0..7] of Char;
2700	–	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 }
2723	<	type_item := isc_info_sql_stmt_type;
2724	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
2725	<	SizeOf(res_buffer), res_buffer), True);
2726	<	if (res_buffer[0] <> isc_info_sql_stmt_type) then
2727	<	IBError(ibxeUnknownError, [nil]);
2728	<	stmt_len := isc_vax_integer(@res_buffer[1], 2);
2729	<	FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
2730	<	{ Done getting the type }
2731	<	case FSQLType of
2732	<	SQLGetSegment,
2733	<	SQLPutSegment,
2734	<	SQLStartTransaction: begin
2735	<	FreeHandle;
2736	<	IBError(ibxeNotPermitted, [nil]);
2737	<	end;
2738	<	SQLCommit,
2739	<	SQLRollback,
2740	<	SQLDDL, SQLSetGenerator,
2741	<	SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
2742	<	SQLExecProcedure: begin
2743	<	{ We already know how many inputs there are, so... }
2744	<	if (FSQLParams.FXSQLDA <> nil) and
2745	<	(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
2746	<	FSQLParams.FXSQLDA), False) > 0) then
2747	<	IBDataBaseError;
2748	<	FSQLParams.Initialize;
2749	<	if FSQLType in [SQLSelect, SQLSelectForUpdate,
2750	<	SQLExecProcedure] then begin
2751	<	{ Allocate an initial output descriptor (with one column) }
2752	<	FSQLRecord.Count := 1;
2753	<	{ Using isc_dsql_describe, get the right size for the columns... }
2754	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2755	<	if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
2756	<	FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
2757	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2758	<	end else if FSQLRecord.FXSQLDA^.sqld = 0 then
2759	<	FSQLRecord.Count := 0;
2760	<	FSQLRecord.Initialize;
2761	<	end;
2762	<	end;
2763	<	end;
2764	<	FPrepared := True;
2765	<	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);
2767	–	except
2768	–	on E: Exception do begin
2769	–	if (FHandle <> nil) then
2770	–	FreeHandle;
2771	–	if E is EIBInterBaseError then
2772	–	raise EIBInterBaseError.Create(EIBInterBaseError(E).SQLCode,
2773	–	EIBInterBaseError(E).IBErrorCode,
2774	–	EIBInterBaseError(E).Message +
2775	–	sSQLErrorSeparator + FProcessedSQL.Text)
2776	–	else
2777	–	raise;
2778	–	end;
2779	–	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 2802 | Line 938 | end;
938
939		procedure TIBSQL.SetTransaction(Value: TIBTransaction);
940		begin
941	+	if FBase.Transaction = Value then Exit;
942	+	FreeHandle;
943		FBase.Transaction := Value;
944		end;
945
#	Line 2809 | Line 947 | procedure TIBSQL.SQLChanging(Sender: TOb
947		begin
948		if Assigned(OnSQLChanging) then
949		OnSQLChanging(Self);
950	<	if FHandle <> nil then FreeHandle;
950	>
951	>	FreeHandle;
952	>	end;
953	>
954	>	procedure TIBSQL.SQLChanged(Sender: TObject);
955	>	begin
956	>	if assigned(OnSQLChanged) then
957	>	OnSQLChanged(self);
958		end;
959
960		procedure TIBSQL.BeforeTransactionEnd(Sender: TObject;
961		Action: TTransactionAction);
962		begin
963	<	if (FOpen) then
964	<	Close;
963	>	if not (Owner is TIBCustomDataSet) then
964	>	FreeHandle;
965		end;
966
967		end.

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