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Comparing ibx/trunk/runtime/IBSQL.pas (file contents):
Revision 1 by tony, Mon Jul 31 16:43:00 2000 UTC vs.
Revision 17 by tony, Sat Dec 28 19:22:24 2013 UTC

#	Line 1 | Line 1
1	<	{************************************************************************}
2	<	{                                                                        }
3	<	{       Borland Delphi Visual Component Library                          }
4	<	{       InterBase Express core components                                }
5	<	{                                                                        }
6	<	{       Copyright (c) 1998-2000 Inprise Corporation                      }
7	<	{                                                                        }
8	<	{    InterBase Express is based in part on the product                   }
9	<	{    Free IB Components, written by Gregory H. Deatz for                 }
10	<	{    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
11	<	{    Free IB Components is used under license.                           }
12	<	{                                                                        }
13	<	{    The contents of this file are subject to the InterBase              }
14	<	{    Public License Version 1.0 (the "License"); you may not             }
15	<	{    use this file except in compliance with the License. You            }
16	<	{    may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17	<	{    Software distributed under the License is distributed on            }
18	<	{    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either              }
19	<	{    express or implied. See the License for the specific language       }
20	<	{    governing rights and limitations under the License.                 }
21	<	{    The Original Code was created by InterBase Software Corporation     }
22	<	{       and its successors.                                              }
23	<	{    Portions created by Inprise Corporation are Copyright (C) Inprise   }
24	<	{       Corporation. All Rights Reserved.                                }
25	<	{    Contributor(s): Jeff Overcash                                       }
26	<	{                                                                        }
27	<	{************************************************************************}
28	<
29	<	unit IBSQL;
30	<
31	<	interface
32	<
33	<	uses
34	<	Windows, SysUtils, Classes, Forms, Controls, IBHeader,
35	<	IBErrorCodes, IBExternals, DB, IB, IBDatabase, IBUtils, IBXConst;
36	<
37	<	type
38	<	TIBSQL = class;
39	<	TIBXSQLDA = class;
40	<
41	<	{ TIBXSQLVAR }
42	<	TIBXSQLVAR = class(TObject)
43	<	private
44	<	FParent: TIBXSQLDA;
45	<	FSQL: TIBSQL;
46	<	FIndex: Integer;
47	<	FModified: Boolean;
48	<	FName: String;
49	<	FXSQLVAR: PXSQLVAR;       { Point to the PXSQLVAR in the owner object }
50	<
51	<	function AdjustScale(Value: Int64; Scale: Integer): Double;
52	<	function AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
53	<	function AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
54	<	function GetAsCurrency: Currency;
55	<	function GetAsInt64: Int64;
56	<	function GetAsDateTime: TDateTime;
57	<	function GetAsDouble: Double;
58	<	function GetAsFloat: Float;
59	<	function GetAsLong: Long;
60	<	function GetAsPointer: Pointer;
61	<	function GetAsQuad: TISC_QUAD;
62	<	function GetAsShort: Short;
63	<	function GetAsString: String;
64	<	function GetAsVariant: Variant;
65	<	function GetAsXSQLVAR: PXSQLVAR;
66	<	function GetIsNull: Boolean;
67	<	function GetIsNullable: Boolean;
68	<	function GetSize: Integer;
69	<	function GetSQLType: Integer;
70	<	procedure SetAsCurrency(Value: Currency);
71	<	procedure SetAsInt64(Value: Int64);
72	<	procedure SetAsDate(Value: TDateTime);
73	<	procedure SetAsTime(Value: TDateTime);
74	<	procedure SetAsDateTime(Value: TDateTime);
75	<	procedure SetAsDouble(Value: Double);
76	<	procedure SetAsFloat(Value: Float);
77	<	procedure SetAsLong(Value: Long);
78	<	procedure SetAsPointer(Value: Pointer);
79	<	procedure SetAsQuad(Value: TISC_QUAD);
80	<	procedure SetAsShort(Value: Short);
81	<	procedure SetAsString(Value: String);
82	<	procedure SetAsVariant(Value: Variant);
83	<	procedure SetAsXSQLVAR(Value: PXSQLVAR);
84	<	procedure SetIsNull(Value: Boolean);
85	<	procedure SetIsNullable(Value: Boolean);
86	<	public
87	<	constructor Create(Parent: TIBXSQLDA; Query: TIBSQL);
88	<	procedure Assign(Source: TIBXSQLVAR);
89	<	procedure LoadFromFile(const FileName: String);
90	<	procedure LoadFromStream(Stream: TStream);
91	<	procedure SaveToFile(const FileName: String);
92	<	procedure SaveToStream(Stream: TStream);
93	<	property AsDate: TDateTime read GetAsDateTime write SetAsDate;
94	<	property AsTime: TDateTime read GetAsDateTime write SetAsTime;
95	<	property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
96	<	property AsDouble: Double read GetAsDouble write SetAsDouble;
97	<	property AsFloat: Float read GetAsFloat write SetAsFloat;
98	<	property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
99	<	property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
100	<	property AsInteger: Integer read GetAsLong write SetAsLong;
101	<	property AsLong: Long read GetAsLong write SetAsLong;
102	<	property AsPointer: Pointer read GetAsPointer write SetAsPointer;
103	<	property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
104	<	property AsShort: Short read GetAsShort write SetAsShort;
105	<	property AsString: String read GetAsString write SetAsString;
106	<	property AsVariant: Variant read GetAsVariant write SetAsVariant;
107	<	property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
108	<	property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
109	<	property IsNull: Boolean read GetIsNull write SetIsNull;
110	<	property IsNullable: Boolean read GetIsNullable write SetIsNullable;
111	<	property Index: Integer read FIndex;
112	<	property Modified: Boolean read FModified write FModified;
113	<	property Name: String read FName;
114	<	property Size: Integer read GetSize;
115	<	property SQLType: Integer read GetSQLType;
116	<	property Value: Variant read GetAsVariant write SetAsVariant;
117	<	end;
118	<
119	<	TIBXSQLVARArray = Array of TIBXSQLVAR;
120	<
121	<	{ TIBXSQLVAR }
122	<	TIBXSQLDA = class(TObject)
123	<	protected
124	<	FSQL: TIBSQL;
125	<	FCount: Integer;
126	<	FNames: TStrings;
127	<	FSize: Integer;
128	<	FXSQLDA: PXSQLDA;
129	<	FXSQLVARs: TIBXSQLVARArray; { array of IBXQLVARs }
130	<	FUniqueRelationName: String;
131	<	function GetModified: Boolean;
132	<	function GetNames: String;
133	<	function GetRecordSize: Integer;
134	<	function GetXSQLDA: PXSQLDA;
135	<	function GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
136	<	function GetXSQLVARByName(Idx: String): TIBXSQLVAR;
137	<	procedure Initialize;
138	<	procedure SetCount(Value: Integer);
139	<	public
140	<	constructor Create(Query: TIBSQL);
141	<	destructor Destroy; override;
142	<	procedure AddName(FieldName: String; Idx: Integer);
143	<	function ByName(Idx: String): TIBXSQLVAR;
144	<	property AsXSQLDA: PXSQLDA read GetXSQLDA;
145	<	property Count: Integer read FCount write SetCount;
146	<	property Modified: Boolean read GetModified;
147	<	property Names: String read GetNames;
148	<	property RecordSize: Integer read GetRecordSize;
149	<	property Vars[Idx: Integer]: TIBXSQLVAR read GetXSQLVAR; default;
150	<	property UniqueRelationName: String read FUniqueRelationName;
151	<	end;
152	<
153	<	{ TIBBatch }
154	<
155	<	TIBBatch = class(TObject)
156	<	protected
157	<	FFilename: String;
158	<	FColumns: TIBXSQLDA;
159	<	FParams: TIBXSQLDA;
160	<	public
161	<	procedure ReadyFile; virtual; abstract;
162	<	property Columns: TIBXSQLDA read FColumns;
163	<	property Filename: String read FFilename write FFilename;
164	<	property Params: TIBXSQLDA read FParams;
165	<	end;
166	<
167	<	TIBBatchInput = class(TIBBatch)
168	<	public
169	<	function ReadParameters: Boolean; virtual; abstract;
170	<	end;
171	<
172	<	TIBBatchOutput = class(TIBBatch)
173	<	public
174	<	function WriteColumns: Boolean; virtual; abstract;
175	<	end;
176	<
177	<
178	<	{ TIBOutputDelimitedFile }
179	<	TIBOutputDelimitedFile = class(TIBBatchOutput)
180	<	protected
181	<	FHandle: THandle;
182	<	FOutputTitles: Boolean;
183	<	FColDelimiter,
184	<	FRowDelimiter: string;
185	<	public
186	<	destructor Destroy; override;
187	<	procedure ReadyFile; override;
188	<	function WriteColumns: Boolean; override;
189	<	property ColDelimiter: string read FColDelimiter write FColDelimiter;
190	<	property OutputTitles: Boolean read FOutputTitles
191	<	write FOutputTitles;
192	<	property RowDelimiter: string read FRowDelimiter write FRowDelimiter;
193	<	end;
194	<
195	<	{ TIBInputDelimitedFile }
196	<	TIBInputDelimitedFile = class(TIBBatchInput)
197	<	protected
198	<	FColDelimiter,
199	<	FRowDelimiter: string;
200	<	FEOF: Boolean;
201	<	FFile: TFileStream;
202	<	FLookAhead: Char;
203	<	FReadBlanksAsNull: Boolean;
204	<	FSkipTitles: Boolean;
205	<	public
206	<	destructor Destroy; override;
207	<	function GetColumn(var Col: string): Integer;
208	<	function ReadParameters: Boolean; override;
209	<	procedure ReadyFile; override;
210	<	property ColDelimiter: string read FColDelimiter write FColDelimiter;
211	<	property ReadBlanksAsNull: Boolean read FReadBlanksAsNull
212	<	write FReadBlanksAsNull;
213	<	property RowDelimiter: string read FRowDelimiter write FRowDelimiter;
214	<	property SkipTitles: Boolean read FSkipTitles write FSkipTitles;
215	<	end;
216	<
217	<	{ TIBOutputRawFile }
218	<	TIBOutputRawFile = class(TIBBatchOutput)
219	<	protected
220	<	FHandle: THandle;
221	<	public
222	<	destructor Destroy; override;
223	<	procedure ReadyFile; override;
224	<	function WriteColumns: Boolean; override;
225	<	end;
226	<
227	<	{ TIBInputRawFile }
228	<	TIBInputRawFile = class(TIBBatchInput)
229	<	protected
230	<	FHandle: THandle;
231	<	public
232	<	destructor Destroy; override;
233	<	function ReadParameters: Boolean; override;
234	<	procedure ReadyFile; override;
235	<	end;
236	<
237	<	{ TIBSQL }
238	<	TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
239	<	SQLUpdate, SQLDelete, SQLDDL,
240	<	SQLGetSegment, SQLPutSegment,
241	<	SQLExecProcedure, SQLStartTransaction,
242	<	SQLCommit, SQLRollback,
243	<	SQLSelectForUpdate, SQLSetGenerator);
244	<
245	<	TIBSQL = class(TComponent)
246	<	private
247	<	FIBLoaded: Boolean;
248	<	protected
249	<	FBase: TIBBase;
250	<	FBOF,                          { At BOF? }
251	<	FEOF,                          { At EOF? }
252	<	FGoToFirstRecordOnExecute,     { Automatically position record on first record after executing }
253	<	FOpen,                         { Is a cursor open? }
254	<	FPrepared: Boolean;            { Has the query been prepared? }
255	<	FRecordCount: Integer;         { How many records have been read so far? }
256	<	FCursor: String;               { Cursor name...}
257	<	FHandle: TISC_STMT_HANDLE;     { Once prepared, this accesses the SQL Query }
258	<	FOnSQLChanging: TNotifyEvent;  { Call this when the SQL is changing }
259	<	FSQL: TStrings;                { SQL Query (by user) }
260	<	FParamCheck: Boolean;          { Check for parameters? (just like TQuery) }
261	<	FProcessedSQL: TStrings;       { SQL Query (pre-processed for param labels) }
262	<	FSQLParams,                    { Any parameters to the query }
263	<	FSQLRecord: TIBXSQLDA;         { The current record }
264	<	FSQLType: TIBSQLTypes;         { Select, update, delete, insert, create, alter, etc...}
265	<	FGenerateParamNames: Boolean;  { Auto generate param names ?}
266	<	procedure DoBeforeDatabaseDisconnect(Sender: TObject);
267	<	function GetDatabase: TIBDatabase;
268	<	function GetDBHandle: PISC_DB_HANDLE;
269	<	function GetEOF: Boolean;
270	<	function GetFields(const Idx: Integer): TIBXSQLVAR;
271	<	function GetFieldIndex(FieldName: String): Integer;
272	<	function GetPlan: String;
273	<	function GetRecordCount: Integer;
274	<	function GetRowsAffected: Integer;
275	<	function GetSQLParams: TIBXSQLDA;
276	<	function GetTransaction: TIBTransaction;
277	<	function GetTRHandle: PISC_TR_HANDLE;
278	<	procedure PreprocessSQL;
279	<	procedure SetDatabase(Value: TIBDatabase);
280	<	procedure SetSQL(Value: TStrings);
281	<	procedure SetTransaction(Value: TIBTransaction);
282	<	procedure SQLChanging(Sender: TObject);
283	<	procedure BeforeTransactionEnd(Sender: TObject);
284	<	public
285	<	constructor Create(AOwner: TComponent); override;
286	<	destructor Destroy; override;
287	<	procedure BatchInput(InputObject: TIBBatchInput);
288	<	procedure BatchOutput(OutputObject: TIBBatchOutput);
289	<	function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
290	<	procedure CheckClosed;           { raise error if query is not closed. }
291	<	procedure CheckOpen;             { raise error if query is not open.}
292	<	procedure CheckValidStatement;   { raise error if statement is invalid.}
293	<	procedure Close;
294	<	function Current: TIBXSQLDA;
295	<	procedure ExecQuery;
296	<	function FieldByName(FieldName: String): TIBXSQLVAR;
297	<	procedure FreeHandle;
298	<	function Next: TIBXSQLDA;
299	<	procedure Prepare;
300	<	function GetUniqueRelationName: String;
301	<	property Bof: Boolean read FBOF;
302	<	property DBHandle: PISC_DB_HANDLE read GetDBHandle;
303	<	property Eof: Boolean read GetEOF;
304	<	property Fields[const Idx: Integer]: TIBXSQLVAR read GetFields;
305	<	property FieldIndex[FieldName: String]: Integer read GetFieldIndex;
306	<	property Open: Boolean read FOpen;
307	<	property Params: TIBXSQLDA read GetSQLParams;
308	<	property Plan: String read GetPlan;
309	<	property Prepared: Boolean read FPrepared;
310	<	property RecordCount: Integer read GetRecordCount;
311	<	property RowsAffected: Integer read GetRowsAffected;
312	<	property SQLType: TIBSQLTypes read FSQLType;
313	<	property TRHandle: PISC_TR_HANDLE read GetTRHandle;
314	<	property Handle: TISC_STMT_HANDLE read FHandle;
315	<	property GenerateParamNames: Boolean read FGenerateParamNames write FGenerateParamNames;
316	<	property UniqueRelationName: String read GetUniqueRelationName;
317	<	published
318	<	property Database: TIBDatabase read GetDatabase write SetDatabase;
319	<	property GoToFirstRecordOnExecute: Boolean read FGoToFirstRecordOnExecute
320	<	write FGoToFirstRecordOnExecute
321	<	default True;
322	<	property ParamCheck: Boolean read FParamCheck write FParamCheck;
323	<	property SQL: TStrings read FSQL write SetSQL;
324	<	property Transaction: TIBTransaction read GetTransaction write SetTransaction;
325	<	property OnSQLChanging: TNotifyEvent read FOnSQLChanging write FOnSQLChanging;
326	<	end;
327	<
328	<	implementation
329	<
330	<	uses
331	<	IBIntf, IBBlob, IBSQLMonitor;
332	<
333	<	{ TIBXSQLVAR }
334	<	constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
335	<	begin
336	<	inherited Create;
337	<	FParent := Parent;
338	<	FSQL := Query;
339	<	end;
340	<
341	<	procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
342	<	var
343	<	szBuff: PChar;
344	<	s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
345	<	bSourceBlob, bDestBlob: Boolean;
346	<	iSegs, iMaxSeg, iSize: Long;
347	<	iBlobType: Short;
348	<	begin
349	<	szBuff := nil;
350	<	bSourceBlob := True;
351	<	bDestBlob := True;
352	<	s_bhandle := nil;
353	<	d_bhandle := nil;
354	<	try
355	<	if (Source.IsNull) then
356	<	begin
357	<	IsNull := True;
358	<	exit;
359	<	end
360	<	else
361	<	if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
362	<	(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
363	<	exit; { arrays not supported }
364	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
365	<	(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
366	<	begin
367	<	AsXSQLVAR := Source.AsXSQLVAR;
368	<	exit;
369	<	end
370	<	else
371	<	if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
372	<	begin
373	<	szBuff := nil;
374	<	IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
375	<	Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
376	<	bSourceBlob := False;
377	<	iSize := Source.FXSQLVAR^.sqllen;
378	<	end
379	<	else
380	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
381	<	bDestBlob := False;
382	<
383	<	if bSourceBlob then
384	<	begin
385	<	{ read the blob }
386	<	Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
387	<	Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
388	<	0, nil), True);
389	<	try
390	<	IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
391	<	iBlobType);
392	<	szBuff := nil;
393	<	IBAlloc(szBuff, 0, iSize);
394	<	IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
395	<	finally
396	<	Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
397	<	end;
398	<	end;
399	<
400	<	if bDestBlob then
401	<	begin
402	<	{ write the blob }
403	<	FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
404	<	FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
405	<	0, nil), True);
406	<	try
407	<	IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
408	<	finally
409	<	FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
410	<	end;
411	<	end
412	<	else
413	<	begin
414	<	{ just copy the buffer }
415	<	FXSQLVAR.sqltype := SQL_TEXT;
416	<	FXSQLVAR.sqllen := iSize;
417	<	IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
418	<	Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
419	<	end;
420	<	finally
421	<	FreeMem(szBuff);
422	<	end;
423	<	end;
424	<
425	<	function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
426	<	var
427	<	Scaling, i: Integer;
428	<	Val: Double;
429	<	begin
430	<	Scaling := 1; Val := Value;
431	<	if Scale > 0 then
432	<	begin
433	<	for i := 1 to Scale do
434	<	Scaling := Scaling * 10;
435	<	result := Val * Scaling;
436	<	end
437	<	else
438	<	if Scale < 0 then
439	<	begin
440	<	for i := -1 downto Scale do
441	<	Scaling := Scaling * 10;
442	<	result := Val / Scaling;
443	<	end
444	<	else
445	<	result := Val;
446	<	end;
447	<
448	<	function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
449	<	var
450	<	Scaling, i: Integer;
451	<	Val: Int64;
452	<	begin
453	<	Scaling := 1; Val := Value;
454	<	if Scale > 0 then begin
455	<	for i := 1 to Scale do Scaling := Scaling * 10;
456	<	result := Val * Scaling;
457	<	end else if Scale < 0 then begin
458	<	for i := -1 downto Scale do Scaling := Scaling * 10;
459	<	result := Val div Scaling;
460	<	end else
461	<	result := Val;
462	<	end;
463	<
464	<	function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
465	<	var
466	<	Scaling, i : Integer;
467	<	FractionText, PadText, CurrText: string;
468	<	begin
469	<	result := Value;
470	<	Scaling := 1;
471	<	if Scale > 0 then
472	<	begin
473	<	for i := 1 to Scale do
474	<	Scaling := Scaling * 10;
475	<	result := Value * Scaling;
476	<	end
477	<	else
478	<	if Scale < 0 then
479	<	begin
480	<	for i := -1 downto Scale do
481	<	Scaling := Scaling * 10;
482	<	FractionText := IntToStr(abs(Value mod Scaling));
483	<	for i := Length(FractionText) to -Scale -1 do
484	<	PadText := '0' + PadText;
485	<	if Value < 0 then
486	<	CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
487	<	else
488	<	CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
489	<	try
490	<	result := StrToCurr(CurrText);
491	<	except
492	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
493	<	end;
494	<	end;
495	<	end;
496	<
497	<	function TIBXSQLVAR.GetAsCurrency: Currency;
498	<	begin
499	<	result := 0;
500	<	if FSQL.Database.SQLDialect < 3 then
501	<	result := GetAsDouble
502	<	else begin
503	<	if not IsNull then
504	<	case FXSQLVAR^.sqltype and (not 1) of
505	<	SQL_TEXT, SQL_VARYING: begin
506	<	try
507	<	result := StrtoCurr(AsString);
508	<	except
509	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
510	<	end;
511	<	end;
512	<	SQL_SHORT:
513	<	result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
514	<	FXSQLVAR^.sqlscale);
515	<	SQL_LONG:
516	<	result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
517	<	FXSQLVAR^.sqlscale);
518	<	SQL_INT64:
519	<	result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
520	<	FXSQLVAR^.sqlscale);
521	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
522	<	result := Trunc(AsDouble);
523	<	else
524	<	IBError(ibxeInvalidDataConversion, [nil]);
525	<	end;
526	<	end;
527	<	end;
528	<
529	<	function TIBXSQLVAR.GetAsInt64: Int64;
530	<	begin
531	<	result := 0;
532	<	if not IsNull then
533	<	case FXSQLVAR^.sqltype and (not 1) of
534	<	SQL_TEXT, SQL_VARYING: begin
535	<	try
536	<	result := StrToInt64(AsString);
537	<	except
538	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
539	<	end;
540	<	end;
541	<	SQL_SHORT:
542	<	result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
543	<	FXSQLVAR^.sqlscale);
544	<	SQL_LONG:
545	<	result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
546	<	FXSQLVAR^.sqlscale);
547	<	SQL_INT64:
548	<	result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
549	<	FXSQLVAR^.sqlscale);
550	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
551	<	result := Trunc(AsDouble);
552	<	else
553	<	IBError(ibxeInvalidDataConversion, [nil]);
554	<	end;
555	<	end;
556	<
557	<	function TIBXSQLVAR.GetAsDateTime: TDateTime;
558	<	var
559	<	tm_date: TCTimeStructure;
560	<	begin
561	<	result := 0;
562	<	if not IsNull then
563	<	case FXSQLVAR^.sqltype and (not 1) of
564	<	SQL_TEXT, SQL_VARYING: begin
565	<	try
566	<	result := StrToDate(AsString);
567	<	except
568	<	on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
569	<	end;
570	<	end;
571	<	SQL_TYPE_DATE: begin
572	<	isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
573	<	try
574	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
575	<	Word(tm_date.tm_mday));
576	<	except
577	<	on E: EConvertError do begin
578	<	IBError(ibxeInvalidDataConversion, [nil]);
579	<	end;
580	<	end;
581	<	end;
582	<	SQL_TYPE_TIME: begin
583	<	isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
584	<	try
585	<	result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
586	<	Word(tm_date.tm_sec), 0)
587	<	except
588	<	on E: EConvertError do begin
589	<	IBError(ibxeInvalidDataConversion, [nil]);
590	<	end;
591	<	end;
592	<	end;
593	<	SQL_TIMESTAMP: begin
594	<	isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
595	<	try
596	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
597	<	Word(tm_date.tm_mday));
598	<	if result >= 0 then
599	<	result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
600	<	Word(tm_date.tm_sec), 0)
601	<	else
602	<	result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
603	<	Word(tm_date.tm_sec), 0)
604	<	except
605	<	on E: EConvertError do begin
606	<	IBError(ibxeInvalidDataConversion, [nil]);
607	<	end;
608	<	end;
609	<	end;
610	<	else
611	<	IBError(ibxeInvalidDataConversion, [nil]);
612	<	end;
613	<	end;
614	<
615	<	function TIBXSQLVAR.GetAsDouble: Double;
616	<	begin
617	<	result := 0;
618	<	if not IsNull then begin
619	<	case FXSQLVAR^.sqltype and (not 1) of
620	<	SQL_TEXT, SQL_VARYING: begin
621	<	try
622	<	result := StrToFloat(AsString);
623	<	except
624	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
625	<	end;
626	<	end;
627	<	SQL_SHORT:
628	<	result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
629	<	FXSQLVAR^.sqlscale);
630	<	SQL_LONG:
631	<	result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
632	<	FXSQLVAR^.sqlscale);
633	<	SQL_INT64:
634	<	result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
635	<	SQL_FLOAT:
636	<	result := PFloat(FXSQLVAR^.sqldata)^;
637	<	SQL_DOUBLE, SQL_D_FLOAT:
638	<	result := PDouble(FXSQLVAR^.sqldata)^;
639	<	else
640	<	IBError(ibxeInvalidDataConversion, [nil]);
641	<	end;
642	<	if  FXSQLVAR^.sqlscale <> 0 then
643	<	result :=
644	<	StrToFloat(FloatToStrF(result, fffixed, 15,
645	<	Abs(FXSQLVAR^.sqlscale) ));
646	<	end;
647	<	end;
648	<
649	<	function TIBXSQLVAR.GetAsFloat: Float;
650	<	begin
651	<	result := 0;
652	<	try
653	<	result := AsDouble;
654	<	except
655	<	on E: EOverflow do
656	<	IBError(ibxeInvalidDataConversion, [nil]);
657	<	end;
658	<	end;
659	<
660	<	function TIBXSQLVAR.GetAsLong: Long;
661	<	begin
662	<	result := 0;
663	<	if not IsNull then
664	<	case FXSQLVAR^.sqltype and (not 1) of
665	<	SQL_TEXT, SQL_VARYING: begin
666	<	try
667	<	result := StrToInt(AsString);
668	<	except
669	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
670	<	end;
671	<	end;
672	<	SQL_SHORT:
673	<	result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
674	<	FXSQLVAR^.sqlscale));
675	<	SQL_LONG:
676	<	result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
677	<	FXSQLVAR^.sqlscale));
678	<	SQL_INT64:
679	<	result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
680	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
681	<	result := Trunc(AsDouble);
682	<	else
683	<	IBError(ibxeInvalidDataConversion, [nil]);
684	<	end;
685	<	end;
686	<
687	<	function TIBXSQLVAR.GetAsPointer: Pointer;
688	<	begin
689	<	if not IsNull then
690	<	result := FXSQLVAR^.sqldata
691	<	else
692	<	result := nil;
693	<	end;
694	<
695	<	function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
696	<	begin
697	<	result.gds_quad_high := 0;
698	<	result.gds_quad_low := 0;
699	<	if not IsNull then
700	<	case FXSQLVAR^.sqltype and (not 1) of
701	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD:
702	<	result := PISC_QUAD(FXSQLVAR^.sqldata)^;
703	<	else
704	<	IBError(ibxeInvalidDataConversion, [nil]);
705	<	end;
706	<	end;
707	<
708	<	function TIBXSQLVAR.GetAsShort: Short;
709	<	begin
710	<	result := 0;
711	<	try
712	<	result := AsLong;
713	<	except
714	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
715	<	end;
716	<	end;
717	<
718	<
719	<	function TIBXSQLVAR.GetAsString: String;
720	<	var
721	<	sz: PChar;
722	<	str_len: Integer;
723	<	ss: TStringStream;
724	<	begin
725	<	result := '';
726	<	{ Check null, if so return a default string }
727	<	if not IsNull then
728	<	case FXSQLVar^.sqltype and (not 1) of
729	<	SQL_ARRAY:
730	<	result := '(Array)'; {do not localize}
731	<	SQL_BLOB: begin
732	<	ss := TStringStream.Create('');
733	<	SaveToStream(ss);
734	<	result := ss.DataString;
735	<	ss.Free;
736	<	end;
737	<	SQL_TEXT, SQL_VARYING: begin
738	<	sz := FXSQLVAR^.sqldata;
739	<	if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
740	<	str_len := FXSQLVar^.sqllen
741	<	else begin
742	<	str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
743	<	Inc(sz, 2);
744	<	end;
745	<	SetString(result, sz, str_len);
746	<	if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
747	<	result := TrimRight(result);
748	<	end;
749	<	SQL_TYPE_DATE:
750	<	case FSQL.Database.SQLDialect of
751	<	1 : result := DateTimeToStr(AsDateTime);
752	<	3 : result := DateToStr(AsDateTime);
753	<	end;
754	<	SQL_TYPE_TIME :
755	<	result := TimeToStr(AsDateTime);
756	<	SQL_TIMESTAMP:
757	<	result := DateTimeToStr(AsDateTime);
758	<	SQL_SHORT, SQL_LONG:
759	<	if FXSQLVAR^.sqlscale = 0 then
760	<	result := IntToStr(AsLong)
761	<	else if FXSQLVAR^.sqlscale >= (-4) then
762	<	result := CurrToStr(AsCurrency)
763	<	else
764	<	result := FloatToStr(AsDouble);
765	<	SQL_INT64:
766	<	if FXSQLVAR^.sqlscale = 0 then
767	<	result := IntToStr(AsInt64)
768	<	else if FXSQLVAR^.sqlscale >= (-4) then
769	<	result := CurrToStr(AsCurrency)
770	<	else
771	<	result := FloatToStr(AsDouble);
772	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
773	<	result := FloatToStr(AsDouble);
774	<	else
775	<	IBError(ibxeInvalidDataConversion, [nil]);
776	<	end;
777	<	end;
778	<
779	<	function TIBXSQLVAR.GetAsVariant: Variant;
780	<	begin
781	<	if IsNull then
782	<	result := NULL
783	<	{ Check null, if so return a default string }
784	<	else case FXSQLVar^.sqltype and (not 1) of
785	<	SQL_ARRAY:
786	<	result := '(Array)'; {do not localize}
787	<	SQL_BLOB:
788	<	result := '(Blob)'; {do not localize}
789	<	SQL_TEXT, SQL_VARYING:
790	<	result := AsString;
791	<	SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
792	<	result := AsDateTime;
793	<	SQL_SHORT, SQL_LONG:
794	<	if FXSQLVAR^.sqlscale = 0 then
795	<	result := AsLong
796	<	else if FXSQLVAR^.sqlscale >= (-4) then
797	<	result := AsCurrency
798	<	else
799	<	result := AsDouble;
800	<	SQL_INT64:
801	<	if FXSQLVAR^.sqlscale = 0 then
802	<	IBError(ibxeInvalidDataConversion, [nil])
803	<	else if FXSQLVAR^.sqlscale >= (-4) then
804	<	result := AsCurrency
805	<	else
806	<	result := AsDouble;
807	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
808	<	result := AsDouble;
809	<	else
810	<	IBError(ibxeInvalidDataConversion, [nil]);
811	<	end;
812	<	end;
813	<
814	<	function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
815	<	begin
816	<	result := FXSQLVAR;
817	<	end;
818	<
819	<	function TIBXSQLVAR.GetIsNull: Boolean;
820	<	begin
821	<	result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
822	<	end;
823	<
824	<	function TIBXSQLVAR.GetIsNullable: Boolean;
825	<	begin
826	<	result := (FXSQLVAR^.sqltype and 1 = 1);
827	<	end;
828	<
829	<	procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
830	<	var
831	<	fs: TFileStream;
832	<	begin
833	<	fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
834	<	try
835	<	LoadFromStream(fs);
836	<	finally
837	<	fs.Free;
838	<	end;
839	<	end;
840	<
841	<	procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
842	<	var
843	<	bs: TIBBlobStream;
844	<	begin
845	<	bs := TIBBlobStream.Create;
846	<	try
847	<	bs.Mode := bmWrite;
848	<	bs.Database := FSQL.Database;
849	<	bs.Transaction := FSQL.Transaction;
850	<	Stream.Seek(0, soFromBeginning);
851	<	bs.LoadFromStream(Stream);
852	<	bs.Finalize;
853	<	AsQuad := bs.BlobID;
854	<	finally
855	<	bs.Free;
856	<	end;
857	<	end;
858	<
859	<	procedure TIBXSQLVAR.SaveToFile(const FileName: String);
860	<	var
861	<	fs: TFileStream;
862	<	begin
863	<	fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
864	<	try
865	<	SaveToStream(fs);
866	<	finally
867	<	fs.Free;
868	<	end;
869	<	end;
870	<
871	<	procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
872	<	var
873	<	bs: TIBBlobStream;
874	<	begin
875	<	bs := TIBBlobStream.Create;
876	<	try
877	<	bs.Mode := bmRead;
878	<	bs.Database := FSQL.Database;
879	<	bs.Transaction := FSQL.Transaction;
880	<	bs.BlobID := AsQuad;
881	<	bs.SaveToStream(Stream);
882	<	finally
883	<	bs.Free;
884	<	end;
885	<	end;
886	<
887	<	function TIBXSQLVAR.GetSize: Integer;
888	<	begin
889	<	result := FXSQLVAR^.sqllen;
890	<	end;
891	<
892	<	function TIBXSQLVAR.GetSQLType: Integer;
893	<	begin
894	<	result := FXSQLVAR^.sqltype and (not 1);
895	<	end;
896	<
897	<	procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
898	<	var
899	<	xvar: TIBXSQLVAR;
900	<	i: Integer;
901	<	begin
902	<	if FSQL.Database.SQLDialect < 3 then
903	<	AsDouble := Value
904	<	else
905	<	begin
906	<	if IsNullable then
907	<	IsNull := False;
908	<	for i := 0 to FParent.FCount - 1 do
909	<	if FParent.FNames[i] = FName then
910	<	begin
911	<	xvar := FParent[i];
912	<	xvar.FXSQLVAR^.sqltype := SQL_INT64 or (xvar.FXSQLVAR^.sqltype and 1);
913	<	xvar.FXSQLVAR^.sqlscale := -4;
914	<	xvar.FXSQLVAR^.sqllen := SizeOf(Int64);
915	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
916	<	PCurrency(xvar.FXSQLVAR^.sqldata)^ := Value;
917	<	xvar.FModified := True;
918	<	end;
919	<	end;
920	<	end;
921	<
922	<	procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
923	<	var
924	<	i: Integer;
925	<	xvar: TIBXSQLVAR;
926	<	begin
927	<	if IsNullable then
928	<	IsNull := False;
929	<	for i := 0 to FParent.FCount - 1 do
930	<	if FParent.FNames[i] = FName then
931	<	begin
932	<	xvar := FParent[i];
933	<	xvar.FXSQLVAR^.sqltype := SQL_INT64 or (xvar.FXSQLVAR^.sqltype and 1);
934	<	xvar.FXSQLVAR^.sqlscale := 0;
935	<	xvar.FXSQLVAR^.sqllen := SizeOf(Int64);
936	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
937	<	PInt64(xvar.FXSQLVAR^.sqldata)^ := Value;
938	<	xvar.FModified := True;
939	<	end;
940	<	end;
941	<
942	<	procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
943	<	var
944	<	i: Integer;
945	<	tm_date: TCTimeStructure;
946	<	Yr, Mn, Dy: Word;
947	<	xvar: TIBXSQLVAR;
948	<	begin
949	<	if FSQL.Database.SQLDialect < 3 then
950	<	begin
951	<	AsDateTime := Value;
952	<	exit;
953	<	end;
954	<	if IsNullable then
955	<	IsNull := False;
956	<	for i := 0 to FParent.FCount - 1 do
957	<	if FParent.FNames[i] = FName then
958	<	begin
959	<	xvar := FParent[i];
960	<	xvar.FXSQLVAR^.sqltype := SQL_TYPE_DATE or (xvar.FXSQLVAR^.sqltype and 1);
961	<	DecodeDate(Value, Yr, Mn, Dy);
962	<	with tm_date do begin
963	<	tm_sec := 0;
964	<	tm_min := 0;
965	<	tm_hour := 0;
966	<	tm_mday := Dy;
967	<	tm_mon := Mn - 1;
968	<	tm_year := Yr - 1900;
969	<	end;
970	<	xvar.FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
971	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
972	<	isc_encode_sql_date(@tm_date, PISC_DATE(xvar.FXSQLVAR^.sqldata));
973	<	xvar.FModified := True;
974	<	end;
975	<	end;
976	<
977	<	procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
978	<	var
979	<	i: Integer;
980	<	tm_date: TCTimeStructure;
981	<	Hr, Mt, S, Ms: Word;
982	<	xvar: TIBXSQLVAR;
983	<	begin
984	<	if FSQL.Database.SQLDialect < 3 then
985	<	begin
986	<	AsDateTime := Value;
987	<	exit;
988	<	end;
989	<	if IsNullable then
990	<	IsNull := False;
991	<	for i := 0 to FParent.FCount - 1 do
992	<	if FParent.FNames[i] = FName then
993	<	begin
994	<	xvar := FParent[i];
995	<	xvar.FXSQLVAR^.sqltype := SQL_TYPE_TIME or (xvar.FXSQLVAR^.sqltype and 1);
996	<	DecodeTime(Value, Hr, Mt, S, Ms);
997	<	with tm_date do begin
998	<	tm_sec := S;
999	<	tm_min := Mt;
1000	<	tm_hour := Hr;
1001	<	tm_mday := 0;
1002	<	tm_mon := 0;
1003	<	tm_year := 0;
1004	<	end;
1005	<	xvar.FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
1006	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1007	<	isc_encode_sql_time(@tm_date, PISC_TIME(xvar.FXSQLVAR^.sqldata));
1008	<	xvar.FModified := True;
1009	<	end;
1010	<	end;
1011	<
1012	<	procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
1013	<	var
1014	<	i: Integer;
1015	<	tm_date: TCTimeStructure;
1016	<	Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
1017	<	xvar: TIBXSQLVAR;
1018	<	begin
1019	<	if IsNullable then
1020	<	IsNull := False;
1021	<	for i := 0 to FParent.FCount - 1 do
1022	<	if FParent.FNames[i] = FName then
1023	<	begin
1024	<	xvar := FParent[i];
1025	<	xvar.FXSQLVAR^.sqltype := SQL_TIMESTAMP or (xvar.FXSQLVAR^.sqltype and 1);
1026	<	DecodeDate(Value, Yr, Mn, Dy);
1027	<	DecodeTime(Value, Hr, Mt, S, Ms);
1028	<	with tm_date do begin
1029	<	tm_sec := S;
1030	<	tm_min := Mt;
1031	<	tm_hour := Hr;
1032	<	tm_mday := Dy;
1033	<	tm_mon := Mn - 1;
1034	<	tm_year := Yr - 1900;
1035	<	end;
1036	<	xvar.FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1037	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1038	<	isc_encode_date(@tm_date, PISC_QUAD(xvar.FXSQLVAR^.sqldata));
1039	<	xvar.FModified := True;
1040	<	end;
1041	<	end;
1042	<
1043	<	procedure TIBXSQLVAR.SetAsDouble(Value: Double);
1044	<	var
1045	<	i: Integer;
1046	<	xvar: TIBXSQLVAR;
1047	<	begin
1048	<	if IsNullable then
1049	<	IsNull := False;
1050	<	for i := 0 to FParent.FCount - 1 do
1051	<	if FParent.FNames[i] = FName then
1052	<	begin
1053	<	xvar := FParent[i];
1054	<	xvar.FXSQLVAR^.sqltype := SQL_DOUBLE or (xvar.FXSQLVAR^.sqltype and 1);
1055	<	xvar.FXSQLVAR^.sqllen := SizeOf(Double);
1056	<	xvar.FXSQLVAR^.sqlscale := 0;
1057	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1058	<	PDouble(xvar.FXSQLVAR^.sqldata)^ := Value;
1059	<	xvar.FModified := True;
1060	<	end;
1061	<	end;
1062	<
1063	<	procedure TIBXSQLVAR.SetAsFloat(Value: Float);
1064	<	var
1065	<	i: Integer;
1066	<	xvar: TIBXSQLVAR;
1067	<	begin
1068	<	if IsNullable then
1069	<	IsNull := False;
1070	<	for i := 0 to FParent.FCount - 1 do
1071	<	if FParent.FNames[i] = FName then
1072	<	begin
1073	<	xvar := FParent[i];
1074	<	xvar.FXSQLVAR^.sqltype := SQL_FLOAT or (xvar.FXSQLVAR^.sqltype and 1);
1075	<	xvar.FXSQLVAR^.sqllen := SizeOf(Float);
1076	<	xvar.FXSQLVAR^.sqlscale := 0;
1077	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1078	<	PSingle(xvar.FXSQLVAR^.sqldata)^ := Value;
1079	<	xvar.FModified := True;
1080	<	end;
1081	<	end;
1082	<
1083	<	procedure TIBXSQLVAR.SetAsLong(Value: Long);
1084	<	var
1085	<	i: Integer;
1086	<	xvar: TIBXSQLVAR;
1087	<	begin
1088	<	if IsNullable then
1089	<	IsNull := False;
1090	<	for i := 0 to FParent.FCount - 1 do
1091	<	if FParent.FNames[i] = FName then
1092	<	begin
1093	<	xvar := FParent[i];
1094	<	xvar.FXSQLVAR^.sqltype := SQL_LONG or (xvar.FXSQLVAR^.sqltype and 1);
1095	<	xvar.FXSQLVAR^.sqllen := SizeOf(Long);
1096	<	xvar.FXSQLVAR^.sqlscale := 0;
1097	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1098	<	PLong(xvar.FXSQLVAR^.sqldata)^ := Value;
1099	<	xvar.FModified := True;
1100	<	end;
1101	<	end;
1102	<
1103	<	procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
1104	<	var
1105	<	i: Integer;
1106	<	xvar: TIBXSQLVAR;
1107	<	begin
1108	<	if IsNullable and (Value = nil) then
1109	<	IsNull := True
1110	<	else begin
1111	<	IsNull := False;
1112	<	for i := 0 to FParent.FCount - 1 do
1113	<	if FParent.FNames[i] = FName then
1114	<	begin
1115	<	xvar := FParent[i];
1116	<	xvar.FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1117	<	Move(Value^, xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen);
1118	<	xvar.FModified := True;
1119	<	end;
1120	<	end;
1121	<	end;
1122	<
1123	<	procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
1124	<	var
1125	<	i: Integer;
1126	<	xvar: TIBXSQLVAR;
1127	<	begin
1128	<	if IsNullable then
1129	<	IsNull := False;
1130	<	for i := 0 to FParent.FCount - 1 do
1131	<	if FParent.FNames[i] = FName then
1132	<	begin
1133	<	xvar := FParent[i];
1134	<	if (xvar.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
1135	<	(xvar.FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
1136	<	IBError(ibxeInvalidDataConversion, [nil]);
1137	<	xvar.FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1138	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1139	<	PISC_QUAD(xvar.FXSQLVAR^.sqldata)^ := Value;
1140	<	xvar.FModified := True;
1141	<	end;
1142	<	end;
1143	<
1144	<	procedure TIBXSQLVAR.SetAsShort(Value: Short);
1145	<	var
1146	<	i: Integer;
1147	<	xvar: TIBXSQLVAR;
1148	<	begin
1149	<	if IsNullable then
1150	<	IsNull := False;
1151	<	for i := 0 to FParent.FCount - 1 do
1152	<	if FParent.FNames[i] = FName then
1153	<	begin
1154	<	xvar := FParent[i];
1155	<	xvar.FXSQLVAR^.sqltype := SQL_SHORT or (xvar.FXSQLVAR^.sqltype and 1);
1156	<	xvar.FXSQLVAR^.sqllen := SizeOf(Short);
1157	<	xvar.FXSQLVAR^.sqlscale := 0;
1158	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1159	<	PShort(xvar.FXSQLVAR^.sqldata)^ := Value;
1160	<	xvar.FModified := True;
1161	<	end;
1162	<	end;
1163	<
1164	<	procedure TIBXSQLVAR.SetAsString(Value: String);
1165	<	var
1166	<	stype: Integer;
1167	<	ss: TStringStream;
1168	<
1169	<	procedure SetStringValue;
1170	<	var
1171	<	i: Integer;
1172	<	xvar: TIBXSQLVAR;
1173	<	begin
1174	<	for i := 0 to FParent.FCount - 1 do
1175	<	if FParent.FNames[i] = FName then
1176	<	begin
1177	<	xvar := FParent[i];
1178	<	if (xvar.FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
1179	<	(xvar.FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
1180	<	Move(Value[1], xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen)
1181	<	else begin
1182	<	xvar.FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1183	<	xvar.FXSQLVAR^.sqllen := Length(Value);
1184	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen + 1);
1185	<	if (Length(Value) > 0) then
1186	<	Move(Value[1], xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen);
1187	<	end;
1188	<	xvar.FModified := True;
1189	<	end;
1190	<	end;
1191	<
1192	<	begin
1193	<	if IsNullable then
1194	<	IsNull := False;
1195	<	stype := FXSQLVAR^.sqltype and (not 1);
1196	<	if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
1197	<	SetStringValue
1198	<	else begin
1199	<	if (stype = SQL_BLOB) then
1200	<	begin
1201	<	ss := TStringStream.Create(Value);
1202	<	try
1203	<	LoadFromStream(ss);
1204	<	finally
1205	<	ss.Free;
1206	<	end;
1207	<	end
1208	<	else if Value = '' then
1209	<	IsNull := True
1210	<	else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
1211	<	(stype = SQL_TYPE_TIME) then
1212	<	SetAsDateTime(StrToDateTime(Value))
1213	<	else
1214	<	SetStringValue;
1215	<	end;
1216	<	end;
1217	<
1218	<	procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
1219	<	begin
1220	<	if VarIsNull(Value) then
1221	<	IsNull := True
1222	<	else case VarType(Value) of
1223	<	varEmpty, varNull:
1224	<	IsNull := True;
1225	<	varSmallint, varInteger, varByte:
1226	<	AsLong := Value;
1227	<	varSingle, varDouble:
1228	<	AsDouble := Value;
1229	<	varCurrency:
1230	<	AsCurrency := Value;
1231	<	varBoolean:
1232	<	if Value then
1233	<	AsLong := ISC_TRUE
1234	<	else
1235	<	AsLong := ISC_FALSE;
1236	<	varDate:
1237	<	AsDateTime := Value;
1238	<	varOleStr, varString:
1239	<	AsString := Value;
1240	<	varArray:
1241	<	IBError(ibxeNotSupported, [nil]);
1242	<	varByRef, varDispatch, varError, varUnknown, varVariant:
1243	<	IBError(ibxeNotPermitted, [nil]);
1244	<	end;
1245	<	end;
1246	<
1247	<	procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
1248	<	var
1249	<	i: Integer;
1250	<	xvar: TIBXSQLVAR;
1251	<	sqlind: PShort;
1252	<	sqldata: PChar;
1253	<	local_sqllen: Integer;
1254	<	begin
1255	<	for i := 0 to FParent.FCount - 1 do
1256	<	if FParent.FNames[i] = FName then
1257	<	begin
1258	<	xvar := FParent[i];
1259	<	sqlind := xvar.FXSQLVAR^.sqlind;
1260	<	sqldata := xvar.FXSQLVAR^.sqldata;
1261	<	Move(Value^, xvar.FXSQLVAR^, SizeOf(TXSQLVAR));
1262	<	xvar.FXSQLVAR^.sqlind := sqlind;
1263	<	xvar.FXSQLVAR^.sqldata := sqldata;
1264	<	if (Value^.sqltype and 1 = 1) then
1265	<	begin
1266	<	if (xvar.FXSQLVAR^.sqlind = nil) then
1267	<	IBAlloc(xvar.FXSQLVAR^.sqlind, 0, SizeOf(Short));
1268	<	xvar.FXSQLVAR^.sqlind^ := Value^.sqlind^;
1269	<	end
1270	<	else
1271	<	if (xvar.FXSQLVAR^.sqlind <> nil) then
1272	<	ReallocMem(xvar.FXSQLVAR^.sqlind, 0);
1273	<	if ((xvar.FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
1274	<	local_sqllen := xvar.FXSQLVAR^.sqllen + 2
1275	<	else
1276	<	local_sqllen := xvar.FXSQLVAR^.sqllen;
1277	<	FXSQLVAR^.sqlscale := Value^.sqlscale;
1278	<	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, local_sqllen);
1279	<	Move(Value^.sqldata[0], xvar.FXSQLVAR^.sqldata[0], local_sqllen);
1280	<	xvar.FModified := True;
1281	<	end;
1282	<	end;
1283	<
1284	<	procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
1285	<	var
1286	<	i: Integer;
1287	<	xvar: TIBXSQLVAR;
1288	<	begin
1289	<	if Value then
1290	<	begin
1291	<	if not IsNullable then
1292	<	IsNullable := True;
1293	<	for i := 0 to FParent.FCount - 1 do
1294	<	if FParent.FNames[i] = FName then
1295	<	begin
1296	<	xvar := FParent[i];
1297	<	xvar.FXSQLVAR^.sqlind^ := -1;
1298	<	xvar.FModified := True;
1299	<	end;
1300	<	end else if ((not Value) and IsNullable) then
1301	<	begin
1302	<	for i := 0 to FParent.FCount - 1 do
1303	<	if FParent.FNames[i] = FName then
1304	<	begin
1305	<	xvar := FParent[i];
1306	<	xvar.FXSQLVAR^.sqlind^ := 0;
1307	<	xvar.FModified := True;
1308	<	end;
1309	<	end;
1310	<	end;
1311	<
1312	<	procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
1313	<	var
1314	<	i: Integer;
1315	<	xvar: TIBXSQLVAR;
1316	<	begin
1317	<	for i := 0 to FParent.FCount - 1 do
1318	<	if FParent.FNames[i] = FName then
1319	<	begin
1320	<	xvar := FParent[i];
1321	<	if (Value <> IsNullable) then
1322	<	begin
1323	<	if Value then
1324	<	begin
1325	<	xvar.FXSQLVAR^.sqltype := xvar.FXSQLVAR^.sqltype or 1;
1326	<	IBAlloc(xvar.FXSQLVAR^.sqlind, 0, SizeOf(Short));
1327	<	end
1328	<	else
1329	<	begin
1330	<	xvar.FXSQLVAR^.sqltype := xvar.FXSQLVAR^.sqltype and (not 1);
1331	<	ReallocMem(xvar.FXSQLVAR^.sqlind, 0);
1332	<	end;
1333	<	end;
1334	<	end;
1335	<	end;
1336	<
1337	<	{ TIBXSQLDA }
1338	<	constructor TIBXSQLDA.Create(Query: TIBSQL);
1339	<	begin
1340	<	inherited Create;
1341	<	FSQL := Query;
1342	<	FNames := TStringList.Create;
1343	<	FSize := 0;
1344	<	FUniqueRelationName := '';
1345	<	end;
1346	<
1347	<	destructor TIBXSQLDA.Destroy;
1348	<	var
1349	<	i: Integer;
1350	<	begin
1351	<	FNames.Free;
1352	<	if FXSQLDA <> nil then
1353	<	begin
1354	<	for i := 0 to FSize - 1 do
1355	<	begin
1356	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
1357	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
1358	<	FXSQLVARs[i].Free ;
1359	<	end;
1360	<	FreeMem(FXSQLDA);
1361	<	FXSQLDA := nil;
1362	<	FXSQLVARs := nil;
1363	<	end;
1364	<	inherited;
1365	<	end;
1366	<
1367	<	procedure TIBXSQLDA.AddName(FieldName: String; Idx: Integer);
1368	<	var
1369	<	fn: String;
1370	<	begin
1371	<	fn := FormatIdentifierValue(FSQL.Database.SQLDialect, FieldName);
1372	<	while FNames.Count <= Idx do
1373	<	FNames.Add('');
1374	<	FNames[Idx] := fn;
1375	<	FXSQLVARs[Idx].FName := fn;
1376	<	FXSQLVARs[Idx].FIndex := Idx;
1377	<	end;
1378	<
1379	<	function TIBXSQLDA.GetModified: Boolean;
1380	<	var
1381	<	i: Integer;
1382	<	begin
1383	<	result := False;
1384	<	for i := 0 to FCount - 1 do
1385	<	if FXSQLVARs[i].Modified then
1386	<	begin
1387	<	result := True;
1388	<	exit;
1389	<	end;
1390	<	end;
1391	<
1392	<	function TIBXSQLDA.GetNames: String;
1393	<	begin
1394	<	result := FNames.Text;
1395	<	end;
1396	<
1397	<	function TIBXSQLDA.GetRecordSize: Integer;
1398	<	begin
1399	<	result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
1400	<	end;
1401	<
1402	<	function TIBXSQLDA.GetXSQLDA: PXSQLDA;
1403	<	begin
1404	<	result := FXSQLDA;
1405	<	end;
1406	<
1407	<	function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
1408	<	begin
1409	<	if (Idx < 0) or (Idx >= FCount) then
1410	<	IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
1411	<	result := FXSQLVARs[Idx]
1412	<	end;
1413	<
1414	<	function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
1415	<	begin
1416	<	result := GetXSQLVARByName(Idx);
1417	<	if result = nil then
1418	<	IBError(ibxeFieldNotFound, [Idx]);
1419	<	end;
1420	<
1421	<	function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
1422	<	var
1423	<	s: String;
1424	<	i, Cnt: Integer;
1425	<	begin
1426	<	s := FormatIdentifierValue(FSQL.Database.SQLDialect, Idx);
1427	<	i := 0;
1428	<	Cnt := FNames.Count;
1429	<	while (i < Cnt) and (FNames[i] <> s) do Inc(i);
1430	<	if i = Cnt then
1431	<	result := nil
1432	<	else
1433	<	result := GetXSQLVAR(i);
1434	<	end;
1435	<
1436	<	procedure TIBXSQLDA.Initialize;
1437	<	var
1438	<	i, j, j_len: Integer;
1439	<	NamesWereEmpty: Boolean;
1440	<	st: String;
1441	<	bUnique: Boolean;
1442	<	begin
1443	<	bUnique := True;
1444	<	NamesWereEmpty := (FNames.Count = 0);
1445	<	if FXSQLDA <> nil then begin
1446	<	for i := 0 to FCount - 1 do begin
1447	<	with FXSQLVARs[i].Data^ do begin
1448	<	if bUnique and (String(relname) <> '') then
1449	<	begin
1450	<	if FUniqueRelationName = '' then
1451	<	FUniqueRelationName := String(relname)
1452	<	else if String(relname) <> FUniqueRelationName then
1453	<	begin
1454	<	FUniqueRelationName := '';
1455	<	bUnique := False;
1456	<	end;
1457	<	end;
1458	<	if NamesWereEmpty then begin
1459	<	st := String(aliasname);
1460	<	if st = '' then begin
1461	<	st := 'F_'; {do not localize}
1462	<	aliasname_length := 2;
1463	<	j := 1; j_len := 1;
1464	<	StrPCopy(aliasname, st + IntToStr(j));
1465	<	end else begin
1466	<	StrPCopy(aliasname, st);
1467	<	j := 0; j_len := 0;
1468	<	end;
1469	<	while GetXSQLVARByName(String(aliasname)) <> nil do begin
1470	<	Inc(j); j_len := Length(IntToStr(j));
1471	<	if j_len + aliasname_length > 31 then
1472	<	StrPCopy(aliasname,
1473	<	Copy(st, 1, 31 - j_len) +
1474	<	IntToStr(j))
1475	<	else
1476	<	StrPCopy(aliasname, st + IntToStr(j));
1477	<	end;
1478	<	Inc(aliasname_length, j_len);
1479	<	AddName(String(aliasname), i);
1480	<	end;
1481	<	case sqltype and (not 1) of
1482	<	SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
1483	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT,
1484	<	SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
1485	<	if (sqllen = 0) then
1486	<	{ Make sure you get a valid pointer anyway
1487	<	select '' from foo }
1488	<	IBAlloc(sqldata, 0, 1)
1489	<	else
1490	<	IBAlloc(sqldata, 0, sqllen)
1491	<	end;
1492	<	SQL_VARYING: begin
1493	<	IBAlloc(sqldata, 0, sqllen + 2);
1494	<	end;
1495	<	else
1496	<	IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
1497	<	end;
1498	<	if (sqltype and 1 = 1) then
1499	<	IBAlloc(sqlind, 0, SizeOf(Short))
1500	<	else
1501	<	if (sqlind <> nil) then
1502	<	ReallocMem(sqlind, 0);
1503	<	end;
1504	<	end;
1505	<	end;
1506	<	end;
1507	<
1508	<	procedure TIBXSQLDA.SetCount(Value: Integer);
1509	<	var
1510	<	i, OldSize: Integer;
1511	<	p : PXSQLVAR;
1512	<	begin
1513	<	FNames.Clear;
1514	<	FCount := Value;
1515	<	if FCount = 0 then
1516	<	FUniqueRelationName := ''
1517	<	else
1518	<	begin
1519	<	if FSize > 0 then
1520	<	OldSize := XSQLDA_LENGTH(FSize)
1521	<	else
1522	<	OldSize := 0;
1523	<	if FCount > FSize then
1524	<	begin
1525	<	IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
1526	<	SetLength(FXSQLVARs, FCount);
1527	<	FXSQLDA^.version := SQLDA_VERSION1;
1528	<	p := @FXSQLDA^.sqlvar[0];
1529	<	for i := 0 to FCount - 1 do
1530	<	begin
1531	<	if i >= FSize then
1532	<	FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
1533	<	FXSQLVARs[i].FXSQLVAR := p;
1534	<	p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
1535	<	//        FNames.Add('');
1536	<	end;
1537	<	FSize := FCount;
1538	<	end;
1539	<	if FSize > 0 then
1540	<	begin
1541	<	FXSQLDA^.sqln := Value;
1542	<	FXSQLDA^.sqld := Value;
1543	<	end;
1544	<	end;
1545	<	end;
1546	<
1547	<	{ TIBOutputDelimitedFile }
1548	<
1549	<	destructor TIBOutputDelimitedFile.Destroy;
1550	<	begin
1551	<	if FHandle <> 0 then
1552	<	begin
1553	<	FlushFileBuffers(FHandle);
1554	<	CloseHandle(FHandle);
1555	<	end;
1556	<	inherited Destroy;
1557	<	end;
1558	<
1559	<	procedure TIBOutputDelimitedFile.ReadyFile;
1560	<	var
1561	<	i: Integer;
1562	<	BytesWritten: DWORD;
1563	<	st: string;
1564	<	begin
1565	<	if FColDelimiter = '' then
1566	<	FColDelimiter := TAB;
1567	<	if FRowDelimiter = '' then
1568	<	FRowDelimiter := CRLF;
1569	<	FHandle := CreateFile(PChar(Filename), GENERIC_WRITE, 0, nil, CREATE_ALWAYS,
1570	<	FILE_ATTRIBUTE_NORMAL, 0);
1571	<	if FHandle = INVALID_HANDLE_VALUE then
1572	<	FHandle := 0;
1573	<	if FOutputTitles then
1574	<	begin
1575	<	for i := 0 to Columns.Count - 1 do
1576	<	if i = 0 then
1577	<	st := string(Columns[i].Data^.aliasname)
1578	<	else
1579	<	st := st + FColDelimiter + string(Columns[i].Data^.aliasname);
1580	<	st := st + FRowDelimiter;
1581	<	WriteFile(FHandle, st[1], Length(st), BytesWritten, nil);
1582	<	end;
1583	<	end;
1584	<
1585	<	function TIBOutputDelimitedFile.WriteColumns: Boolean;
1586	<	var
1587	<	i: Integer;
1588	<	BytesWritten: DWORD;
1589	<	st: string;
1590	<	begin
1591	<	result := False;
1592	<	if FHandle <> 0 then
1593	<	begin
1594	<	st := '';
1595	<	for i := 0 to Columns.Count - 1 do
1596	<	begin
1597	<	if i > 0 then
1598	<	st := st + FColDelimiter;
1599	<	st := st + StripString(Columns[i].AsString, FColDelimiter + FRowDelimiter);
1600	<	end;
1601	<	st := st + FRowDelimiter;
1602	<	WriteFile(FHandle, st[1], Length(st), BytesWritten, nil);
1603	<	if BytesWritten = DWORD(Length(st)) then
1604	<	result := True;
1605	<	end
1606	<	end;
1607	<
1608	<	{ TIBInputDelimitedFile }
1609	<
1610	<	destructor TIBInputDelimitedFile.Destroy;
1611	<	begin
1612	<	FFile.Free;
1613	<	inherited Destroy;
1614	<	end;
1615	<
1616	<	function TIBInputDelimitedFile.GetColumn(var Col: string): Integer;
1617	<	var
1618	<	c: Char;
1619	<	BytesRead: Integer;
1620	<
1621	<	procedure ReadInput;
1622	<	begin
1623	<	if FLookAhead <> NULL_TERMINATOR then
1624	<	begin
1625	<	c := FLookAhead;
1626	<	BytesRead := 1;
1627	<	FLookAhead := NULL_TERMINATOR;
1628	<	end else
1629	<	BytesRead := FFile.Read(c, 1);
1630	<	end;
1631	<
1632	<	procedure CheckCRLF(Delimiter: string);
1633	<	begin
1634	<	if (c = CR) and (Pos(LF, Delimiter) > 0) then {mbcs ok}
1635	<	begin
1636	<	BytesRead := FFile.Read(c, 1);
1637	<	if (BytesRead = 1) and (c <> #10) then
1638	<	FLookAhead := c
1639	<	end;
1640	<	end;
1641	<
1642	<	begin
1643	<	Col := '';
1644	<	result := 0;
1645	<	ReadInput;
1646	<	while BytesRead <> 0 do begin
1647	<	if Pos(c, FColDelimiter) > 0 then {mbcs ok}
1648	<	begin
1649	<	CheckCRLF(FColDelimiter);
1650	<	result := 1;
1651	<	break;
1652	<	end else if Pos(c, FRowDelimiter) > 0 then {mbcs ok}
1653	<	begin
1654	<	CheckCRLF(FRowDelimiter);
1655	<	result := 2;
1656	<	break;
1657	<	end else
1658	<	Col := Col + c;
1659	<	ReadInput;
1660	<	end;
1661	<	end;
1662	<
1663	<	function TIBInputDelimitedFile.ReadParameters: Boolean;
1664	<	var
1665	<	i, curcol: Integer;
1666	<	Col: string;
1667	<	begin
1668	<	result := False;
1669	<	if not FEOF then begin
1670	<	curcol := 0;
1671	<	repeat
1672	<	i := GetColumn(Col);
1673	<	if (i = 0) then
1674	<	FEOF := True;
1675	<	if (curcol < Params.Count) then
1676	<	begin
1677	<	try
1678	<	if (Col = '') and
1679	<	(ReadBlanksAsNull) then
1680	<	Params[curcol].IsNull := True
1681	<	else
1682	<	Params[curcol].AsString := Col;
1683	<	Inc(curcol);
1684	<	except
1685	<	on E: Exception do begin
1686	<	if not (FEOF and (curcol = Params.Count)) then
1687	<	raise;
1688	<	end;
1689	<	end;
1690	<	end;
1691	<	until (FEOF) or (i = 2);
1692	<	result := ((FEOF) and (curcol = Params.Count)) or
1693	<	(not FEOF);
1694	<	end;
1695	<	end;
1696	<
1697	<	procedure TIBInputDelimitedFile.ReadyFile;
1698	<	begin
1699	<	if FColDelimiter = '' then
1700	<	FColDelimiter := TAB;
1701	<	if FRowDelimiter = '' then
1702	<	FRowDelimiter := CRLF;
1703	<	FLookAhead := NULL_TERMINATOR;
1704	<	FEOF := False;
1705	<	if FFile <> nil then
1706	<	FFile.Free;
1707	<	FFile := TFileStream.Create(FFilename, fmOpenRead or fmShareDenyWrite);
1708	<	if FSkipTitles then
1709	<	ReadParameters;
1710	<	end;
1711	<
1712	<	{ TIBOutputRawFile }
1713	<	destructor TIBOutputRawFile.Destroy;
1714	<	begin
1715	<	if FHandle <> 0 then
1716	<	begin
1717	<	FlushFileBuffers(FHandle);
1718	<	CloseHandle(FHandle);
1719	<	end;
1720	<	inherited Destroy;
1721	<	end;
1722	<
1723	<	procedure TIBOutputRawFile.ReadyFile;
1724	<	begin
1725	<	FHandle := CreateFile(PChar(Filename), GENERIC_WRITE, 0, nil, CREATE_ALWAYS,
1726	<	FILE_ATTRIBUTE_NORMAL, 0);
1727	<	if FHandle = INVALID_HANDLE_VALUE then
1728	<	FHandle := 0;
1729	<	end;
1730	<
1731	<	function TIBOutputRawFile.WriteColumns: Boolean;
1732	<	var
1733	<	i: Integer;
1734	<	BytesWritten: DWord;
1735	<	begin
1736	<	result := False;
1737	<	if FHandle <> 0 then
1738	<	begin
1739	<	for i := 0 to Columns.Count - 1 do
1740	<	begin
1741	<	WriteFile(FHandle, Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen,
1742	<	BytesWritten, nil);
1743	<	if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
1744	<	exit;
1745	<	end;
1746	<	result := True;
1747	<	end;
1748	<	end;
1749	<
1750	<	{ TIBInputRawFile }
1751	<	destructor TIBInputRawFile.Destroy;
1752	<	begin
1753	<	if FHandle <> 0 then
1754	<	CloseHandle(FHandle);
1755	<	inherited;
1756	<	end;
1757	<
1758	<	function TIBInputRawFile.ReadParameters: Boolean;
1759	<	var
1760	<	i: Integer;
1761	<	BytesRead: DWord;
1762	<	begin
1763	<	result := False;
1764	<	if FHandle <> 0 then
1765	<	begin
1766	<	for i := 0 to Params.Count - 1 do
1767	<	begin
1768	<	ReadFile(FHandle, Params[i].Data^.sqldata^, Params[i].Data^.sqllen,
1769	<	BytesRead, nil);
1770	<	if BytesRead <> DWORD(Params[i].Data^.sqllen) then
1771	<	exit;
1772	<	end;
1773	<	result := True;
1774	<	end;
1775	<	end;
1776	<
1777	<	procedure TIBInputRawFile.ReadyFile;
1778	<	begin
1779	<	if FHandle <> 0 then
1780	<	CloseHandle(FHandle);
1781	<	FHandle := CreateFile(PChar(Filename), GENERIC_READ, 0, nil, OPEN_EXISTING,
1782	<	FILE_FLAG_SEQUENTIAL_SCAN, 0);
1783	<	if FHandle = INVALID_HANDLE_VALUE then
1784	<	FHandle := 0;
1785	<	end;
1786	<
1787	<	{ TIBSQL }
1788	<	constructor TIBSQL.Create(AOwner: TComponent);
1789	<	begin
1790	<	inherited Create(AOwner);
1791	<	FIBLoaded := False;
1792	<	CheckIBLoaded;
1793	<	FIBLoaded := True;
1794	<	FGenerateParamNames := False;
1795	<	FGoToFirstRecordOnExecute := True;
1796	<	FBase := TIBBase.Create(Self);
1797	<	FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
1798	<	FBase.BeforeTransactionEnd := BeforeTransactionEnd;
1799	<	FBOF := False;
1800	<	FEOF := False;
1801	<	FPrepared := False;
1802	<	FRecordCount := 0;
1803	<	FSQL := TStringList.Create;
1804	<	TStringList(FSQL).OnChanging := SQLChanging;
1805	<	FProcessedSQL := TStringList.Create;
1806	<	FHandle := nil;
1807	<	FSQLParams := TIBXSQLDA.Create(self);
1808	<	FSQLRecord := TIBXSQLDA.Create(self);
1809	<	FSQLType := SQLUnknown;
1810	<	FParamCheck := True;
1811	<	FCursor := Name + RandomString(8);
1812	<	if AOwner is TIBDatabase then
1813	<	Database := TIBDatabase(AOwner)
1814	<	else
1815	<	if AOwner is TIBTransaction then
1816	<	Transaction := TIBTransaction(AOwner);
1817	<	end;
1818	<
1819	<	destructor TIBSQL.Destroy;
1820	<	begin
1821	<	if FIBLoaded then
1822	<	begin
1823	<	if (FOpen) then
1824	<	Close;
1825	<	if (FHandle <> nil) then
1826	<	FreeHandle;
1827	<	FSQL.Free;
1828	<	FProcessedSQL.Free;
1829	<	FBase.Free;
1830	<	FSQLParams.Free;
1831	<	FSQLRecord.Free;
1832	<	end;
1833	<	inherited;
1834	<	end;
1835	<
1836	<	procedure TIBSQL.BatchInput(InputObject: TIBBatchInput);
1837	<	begin
1838	<	if not Prepared then
1839	<	Prepare;
1840	<	InputObject.FParams := Self.FSQLParams;
1841	<	InputObject.ReadyFile;
1842	<	if FSQLType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
1843	<	while InputObject.ReadParameters do
1844	<	ExecQuery;
1845	<	end;
1846	<
1847	<	procedure TIBSQL.BatchOutput(OutputObject: TIBBatchOutput);
1848	<	begin
1849	<	CheckClosed;
1850	<	if not Prepared then
1851	<	Prepare;
1852	<	if FSQLType = SQLSelect then begin
1853	<	try
1854	<	ExecQuery;
1855	<	OutputObject.FColumns := Self.FSQLRecord;
1856	<	OutputObject.ReadyFile;
1857	<	if not FGoToFirstRecordOnExecute then
1858	<	Next;
1859	<	while (not Eof) and (OutputObject.WriteColumns) do
1860	<	Next;
1861	<	finally
1862	<	Close;
1863	<	end;
1864	<	end;
1865	<	end;
1866	<
1867	<	procedure TIBSQL.CheckClosed;
1868	<	begin
1869	<	if FOpen then IBError(ibxeSQLOpen, [nil]);
1870	<	end;
1871	<
1872	<	procedure TIBSQL.CheckOpen;
1873	<	begin
1874	<	if not FOpen then IBError(ibxeSQLClosed, [nil]);
1875	<	end;
1876	<
1877	<	procedure TIBSQL.CheckValidStatement;
1878	<	begin
1879	<	FBase.CheckTransaction;
1880	<	if (FHandle = nil) then
1881	<	IBError(ibxeInvalidStatementHandle, [nil]);
1882	<	end;
1883	<
1884	<	procedure TIBSQL.Close;
1885	<	var
1886	<	isc_res: ISC_STATUS;
1887	<	begin
1888	<	try
1889	<	if (FHandle <> nil) and (SQLType = SQLSelect) and FOpen then begin
1890	<	isc_res := Call(
1891	<	isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
1892	<	False);
1893	<	if (StatusVector^ = 1) and (isc_res > 0) and
1894	<	not CheckStatusVector(
1895	<	[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
1896	<	IBDatabaseError;
1897	<	end;
1898	<	finally
1899	<	FEOF := False;
1900	<	FBOF := False;
1901	<	FOpen := False;
1902	<	FRecordCount := 0;
1903	<	end;
1904	<	end;
1905	<
1906	<	function TIBSQL.Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
1907	<	begin
1908	<	result := 0;
1909	<	if Transaction <> nil then
1910	<	result := Transaction.Call(ErrCode, RaiseError)
1911	<	else
1912	<	if RaiseError and (ErrCode > 0) then
1913	<	IBDataBaseError;
1914	<	end;
1915	<
1916	<	function TIBSQL.Current: TIBXSQLDA;
1917	<	begin
1918	<	result := FSQLRecord;
1919	<	end;
1920	<
1921	<	procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
1922	<	begin
1923	<	if (FHandle <> nil) then begin
1924	<	Close;
1925	<	FreeHandle;
1926	<	end;
1927	<	end;
1928	<
1929	<	procedure TIBSQL.ExecQuery;
1930	<	var
1931	<	fetch_res: ISC_STATUS;
1932	<	begin
1933	<	CheckClosed;
1934	<	if not Prepared then Prepare;
1935	<	CheckValidStatement;
1936	<	case FSQLType of
1937	<	SQLSelect: begin
1938	<	Call(isc_dsql_execute2(StatusVector,
1939	<	TRHandle,
1940	<	@FHandle,
1941	<	Database.SQLDialect,
1942	<	FSQLParams.AsXSQLDA,
1943	<	nil), True);
1944	<	Call(
1945	<	isc_dsql_set_cursor_name(StatusVector, @FHandle, PChar(FCursor), 0),
1946	<	True);
1947	<	FOpen := True;
1948	<	FBOF := True;
1949	<	FEOF := False;
1950	<	FRecordCount := 0;
1951	<	if FGoToFirstRecordOnExecute then
1952	<	Next;
1953	<	end;
1954	<	SQLExecProcedure: begin
1955	<	fetch_res := Call(isc_dsql_execute2(StatusVector,
1956	<	TRHandle,
1957	<	@FHandle,
1958	<	Database.SQLDialect,
1959	<	FSQLParams.AsXSQLDA,
1960	<	FSQLRecord.AsXSQLDA), False);
1961	<	if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
1962	<	begin
1963	<	{ Sometimes a prepared stored procedure appears to get
1964	<	off sync on the server ....This code is meant to try
1965	<	to work around the problem simply by "retrying". This
1966	<	need to be reproduced and fixed.
1967	<	}
1968	<	isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
1969	<	PChar(FProcessedSQL.Text), 1, nil);
1970	<	Call(isc_dsql_execute2(StatusVector,
1971	<	TRHandle,
1972	<	@FHandle,
1973	<	Database.SQLDialect,
1974	<	FSQLParams.AsXSQLDA,
1975	<	FSQLRecord.AsXSQLDA), True);
1976	<	end;
1977	<	end
1978	<	else
1979	<	Call(isc_dsql_execute(StatusVector,
1980	<	TRHandle,
1981	<	@FHandle,
1982	<	Database.SQLDialect,
1983	<	FSQLParams.AsXSQLDA), True)
1984	<	end;
1985	<	if not (csDesigning in ComponentState) then
1986	<	MonitorHook.SQLExecute(Self);
1987	<	end;
1988	<
1989	<	function TIBSQL.GetEOF: Boolean;
1990	<	begin
1991	<	result := FEOF or not FOpen;
1992	<	end;
1993	<
1994	<	function TIBSQL.FieldByName(FieldName: String): TIBXSQLVAR;
1995	<	var
1996	<	i: Integer;
1997	<	begin
1998	<	i := GetFieldIndex(FieldName);
1999	<	if (i < 0) then
2000	<	IBError(ibxeFieldNotFound, [FieldName]);
2001	<	result := GetFields(i);
2002	<	end;
2003	<
2004	<	function TIBSQL.GetFields(const Idx: Integer): TIBXSQLVAR;
2005	<	begin
2006	<	if (Idx < 0) or (Idx >= FSQLRecord.Count) then
2007	<	IBError(ibxeFieldNotFound, [IntToStr(Idx)]);
2008	<	result := FSQLRecord[Idx];
2009	<	end;
2010	<
2011	<	function TIBSQL.GetFieldIndex(FieldName: String): Integer;
2012	<	begin
2013	<	if (FSQLRecord.GetXSQLVarByName(FieldName) = nil) then
2014	<	result := -1
2015	<	else
2016	<	result := FSQLRecord.GetXSQLVarByName(FieldName).Index;
2017	<	end;
2018	<
2019	<	function TIBSQL.Next: TIBXSQLDA;
2020	<	var
2021	<	fetch_res: ISC_STATUS;
2022	<	begin
2023	<	result := nil;
2024	<	if not FEOF then begin
2025	<	CheckOpen;
2026	<	{ Go to the next record... }
2027	<	fetch_res :=
2028	<	Call(isc_dsql_fetch(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.AsXSQLDA), False);
2029	<	if (fetch_res = 100) or (CheckStatusVector([isc_dsql_cursor_err])) then begin
2030	<	FEOF := True;
2031	<	end else if (fetch_res > 0) then begin
2032	<	try
2033	<	IBDataBaseError;
2034	<	except
2035	<	Close;
2036	<	raise;
2037	<	end;
2038	<	end else begin
2039	<	Inc(FRecordCount);
2040	<	FBOF := False;
2041	<	result := FSQLRecord;
2042	<	end;
2043	<	if not (csDesigning in ComponentState) then
2044	<	MonitorHook.SQLFetch(Self);
2045	<	end;
2046	<	end;
2047	<
2048	<	procedure TIBSQL.FreeHandle;
2049	<	var
2050	<	isc_res: ISC_STATUS;
2051	<	begin
2052	<	try
2053	<	{ The following two lines merely set the SQLDA count
2054	<	variable FCount to 0, but do not deallocate
2055	<	That way the allocations can be reused for
2056	<	a new query sring in the same SQL instance }
2057	<	FSQLRecord.Count := 0;
2058	<	FSQLParams.Count := 0;
2059	<	if FHandle <> nil then begin
2060	<	isc_res :=
2061	<	Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
2062	<	if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
2063	<	IBDataBaseError;
2064	<	end;
2065	<	finally
2066	<	FPrepared := False;
2067	<	FHandle := nil;
2068	<	end;
2069	<	end;
2070	<
2071	<	function TIBSQL.GetDatabase: TIBDatabase;
2072	<	begin
2073	<	result := FBase.Database;
2074	<	end;
2075	<
2076	<	function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
2077	<	begin
2078	<	result := FBase.DBHandle;
2079	<	end;
2080	<
2081	<	function TIBSQL.GetPlan: String;
2082	<	var
2083	<	result_buffer: array[0..16384] of Char;
2084	<	result_length, i: Integer;
2085	<	info_request: Char;
2086	<	begin
2087	<	if (not Prepared) or
2088	<	(not (FSQLType in [SQLSelect, SQLSelectForUpdate,
2089	<	{TODO: SQLExecProcedure, }
2090	<	SQLUpdate, SQLDelete])) then
2091	<	result := ''
2092	<	else begin
2093	<	info_request := Char(isc_info_sql_get_plan);
2094	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
2095	<	SizeOf(result_buffer), result_buffer), True);
2096	<	if (result_buffer[0] <> Char(isc_info_sql_get_plan)) then
2097	<	IBError(ibxeUnknownError, [nil]);
2098	<	result_length := isc_vax_integer(@result_buffer[1], 2);
2099	<	SetString(result, nil, result_length);
2100	<	for i := 1 to result_length do
2101	<	result[i] := result_buffer[i + 2];
2102	<	result := Trim(result);
2103	<	end;
2104	<	end;
2105	<
2106	<	function TIBSQL.GetRecordCount: Integer;
2107	<	begin
2108	<	result := FRecordCount;
2109	<	end;
2110	<
2111	<	function TIBSQL.GetRowsAffected: integer;
2112	<	var
2113	<	result_buffer: array[0..1048] of Char;
2114	<	info_request: Char;
2115	<	begin
2116	<	if not Prepared then
2117	<	result := -1
2118	<	else begin
2119	<	info_request := Char(isc_info_sql_records);
2120	<	if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
2121	<	SizeOf(result_buffer), result_buffer) > 0 then
2122	<	IBDatabaseError;
2123	<	if (result_buffer[0] <> Char(isc_info_sql_records)) then
2124	<	result := -1
2125	<	else
2126	<	case SQLType of
2127	<	SQLUpdate:   Result := isc_vax_integer(@result_buffer[6], 4);
2128	<	SQLDelete:   Result := isc_vax_integer(@result_buffer[13], 4);
2129	<	SQLInsert:   Result := isc_vax_integer(@result_buffer[27], 4);
2130	<	else         Result := -1 ;
2131	<	end ;
2132	<	end;
2133	<	end;
2134	<
2135	<	function TIBSQL.GetSQLParams: TIBXSQLDA;
2136	<	begin
2137	<	if not Prepared then
2138	<	Prepare;
2139	<	result := FSQLParams;
2140	<	end;
2141	<
2142	<	function TIBSQL.GetTransaction: TIBTransaction;
2143	<	begin
2144	<	result := FBase.Transaction;
2145	<	end;
2146	<
2147	<	function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
2148	<	begin
2149	<	result := FBase.TRHandle;
2150	<	end;
2151	<
2152	<	{
2153	<	Preprocess SQL
2154	<	Using FSQL, process the typed SQL and put the process SQL
2155	<	in FProcessedSQL and parameter names in FSQLParams
2156	<	}
2157	<	procedure TIBSQL.PreprocessSQL;
2158	<	var
2159	<	cCurChar, cNextChar, cQuoteChar: Char;
2160	<	sSQL, sProcessedSQL, sParamName: String;
2161	<	i, iLenSQL, iSQLPos: Integer;
2162	<	iCurState, iCurParamState: Integer;
2163	<	iParamSuffix: Integer;
2164	<	slNames: TStrings;
2165	<
2166	<	const
2167	<	DefaultState = 0;
2168	<	CommentState = 1;
2169	<	QuoteState = 2;
2170	<	ParamState = 3;
2171	<	ParamDefaultState = 0;
2172	<	ParamQuoteState = 1;
2173	<
2174	<	procedure AddToProcessedSQL(cChar: Char);
2175	<	begin
2176	<	sProcessedSQL[iSQLPos] := cChar;
2177	<	Inc(iSQLPos);
2178	<	end;
2179	<
2180	<	begin
2181	<	slNames := TStringList.Create;
2182	<	try
2183	<	{ Do some initializations of variables }
2184	<	iParamSuffix := 0;
2185	<	cQuoteChar := '''';
2186	<	sSQL := FSQL.Text;
2187	<	iLenSQL := Length(sSQL);
2188	<	SetString(sProcessedSQL, nil, iLenSQL + 1);
2189	<	i := 1;
2190	<	iSQLPos := 1;
2191	<	iCurState := DefaultState;
2192	<	iCurParamState := ParamDefaultState;
2193	<	{ Now, traverse through the SQL string, character by character,
2194	<	picking out the parameters and formatting correctly for InterBase }
2195	<	while (i <= iLenSQL) do begin
2196	<	{ Get the current token and a look-ahead }
2197	<	cCurChar := sSQL[i];
2198	<	if i = iLenSQL then
2199	<	cNextChar := #0
2200	<	else
2201	<	cNextChar := sSQL[i + 1];
2202	<	{ Now act based on the current state }
2203	<	case iCurState of
2204	<	DefaultState: begin
2205	<	case cCurChar of
2206	<	'''', '"': begin
2207	<	cQuoteChar := cCurChar;
2208	<	iCurState := QuoteState;
2209	<	end;
2210	<	'?', ':': begin
2211	<	iCurState := ParamState;
2212	<	AddToProcessedSQL('?');
2213	<	end;
2214	<	'/': if (cNextChar = '*') then begin
2215	<	AddToProcessedSQL(cCurChar);
2216	<	Inc(i);
2217	<	iCurState := CommentState;
2218	<	end;
2219	<	end;
2220	<	end;
2221	<	CommentState: begin
2222	<	if (cNextChar = #0) then
2223	<	IBError(ibxeSQLParseError, [SEOFInComment])
2224	<	else if (cCurChar = '*') then begin
2225	<	if (cNextChar = '/') then
2226	<	iCurState := DefaultState;
2227	<	end;
2228	<	end;
2229	<	QuoteState: begin
2230	<	if cNextChar = #0 then
2231	<	IBError(ibxeSQLParseError, [SEOFInString])
2232	<	else if (cCurChar = cQuoteChar) then begin
2233	<	if (cNextChar = cQuoteChar) then begin
2234	<	AddToProcessedSQL(cCurChar);
2235	<	Inc(i);
2236	<	end else
2237	<	iCurState := DefaultState;
2238	<	end;
2239	<	end;
2240	<	ParamState:
2241	<	begin
2242	<	{ collect the name of the parameter }
2243	<	if iCurParamState = ParamDefaultState then
2244	<	begin
2245	<	if cCurChar = '"' then
2246	<	iCurParamState := ParamQuoteState
2247	<	else if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
2248	<	sParamName := sParamName + cCurChar
2249	<	else if FGenerateParamNames then
2250	<	begin
2251	<	sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
2252	<	Inc(iParamSuffix);
2253	<	iCurState := DefaultState;
2254	<	slNames.Add(sParamName);
2255	<	sParamName := '';
2256	<	end
2257	<	else
2258	<	IBError(ibxeSQLParseError, [SParamNameExpected]);
2259	<	end
2260	<	else begin
2261	<	{ determine if Quoted parameter name is finished }
2262	<	if cCurChar = '"' then
2263	<	begin
2264	<	Inc(i);
2265	<	slNames.Add(sParamName);
2266	<	SParamName := '';
2267	<	iCurParamState := ParamDefaultState;
2268	<	iCurState := DefaultState;
2269	<	end
2270	<	else
2271	<	sParamName := sParamName + cCurChar
2272	<	end;
2273	<	{ determine if the unquoted parameter name is finished }
2274	<	if (iCurParamState <> ParamQuoteState) and
2275	<	(iCurState <> DefaultState) then
2276	<	begin
2277	<	if not (cNextChar in ['A'..'Z', 'a'..'z',
2278	<	'0'..'9', '_', '$']) then begin
2279	<	Inc(i);
2280	<	iCurState := DefaultState;
2281	<	slNames.Add(sParamName);
2282	<	sParamName := '';
2283	<	end;
2284	<	end;
2285	<	end;
2286	<	end;
2287	<	if iCurState <> ParamState then
2288	<	AddToProcessedSQL(sSQL[i]);
2289	<	Inc(i);
2290	<	end;
2291	<	AddToProcessedSQL(#0);
2292	<	FSQLParams.Count := slNames.Count;
2293	<	for i := 0 to slNames.Count - 1 do
2294	<	FSQLParams.AddName(slNames[i], i);
2295	<	FProcessedSQL.Text := sProcessedSQL;
2296	<	finally
2297	<	slNames.Free;
2298	<	end;
2299	<	end;
2300	<
2301	<	procedure TIBSQL.SetDatabase(Value: TIBDatabase);
2302	<	begin
2303	<	FBase.Database := Value;
2304	<	end;
2305	<
2306	<	procedure TIBSQL.Prepare;
2307	<	var
2308	<	stmt_len: Integer;
2309	<	res_buffer: array[0..7] of Char;
2310	<	type_item: Char;
2311	<	begin
2312	<	CheckClosed;
2313	<	FBase.CheckDatabase;
2314	<	FBase.CheckTransaction;
2315	<	if FPrepared then
2316	<	exit;
2317	<	if (FSQL.Text = '') then
2318	<	IBError(ibxeEmptyQuery, [nil]);
2319	<	if not ParamCheck then
2320	<	FProcessedSQL.Text := FSQL.Text
2321	<	else
2322	<	PreprocessSQL;
2323	<	if (FProcessedSQL.Text = '') then
2324	<	IBError(ibxeEmptyQuery, [nil]);
2325	<	try
2326	<	Call(isc_dsql_alloc_statement2(StatusVector, DBHandle,
2327	<	@FHandle), True);
2328	<	Call(isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2329	<	PChar(FProcessedSQL.Text), Database.SQLDialect, nil), True);
2330	<	{ After preparing the statement, query the stmt type and possibly
2331	<	create a FSQLRecord "holder" }
2332	<	{ Get the type of the statement }
2333	<	type_item := Char(isc_info_sql_stmt_type);
2334	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
2335	<	SizeOf(res_buffer), res_buffer), True);
2336	<	if (res_buffer[0] <> Char(isc_info_sql_stmt_type)) then
2337	<	IBError(ibxeUnknownError, [nil]);
2338	<	stmt_len := isc_vax_integer(@res_buffer[1], 2);
2339	<	FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
2340	<	{ Done getting the type }
2341	<	case FSQLType of
2342	<	SQLGetSegment,
2343	<	SQLPutSegment,
2344	<	SQLStartTransaction: begin
2345	<	FreeHandle;
2346	<	IBError(ibxeNotPermitted, [nil]);
2347	<	end;
2348	<	SQLCommit,
2349	<	SQLRollback,
2350	<	SQLDDL, SQLSetGenerator,
2351	<	SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
2352	<	SQLExecProcedure: begin
2353	<	{ We already know how many inputs there are, so... }
2354	<	if (FSQLParams.FXSQLDA <> nil) and
2355	<	(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
2356	<	FSQLParams.FXSQLDA), False) > 0) then
2357	<	IBDataBaseError;
2358	<	FSQLParams.Initialize;
2359	<	if FSQLType in [SQLSelect, SQLSelectForUpdate,
2360	<	SQLExecProcedure] then begin
2361	<	{ Allocate an initial output descriptor (with one column) }
2362	<	FSQLRecord.Count := 1;
2363	<	{ Using isc_dsql_describe, get the right size for the columns... }
2364	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2365	<	if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
2366	<	FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
2367	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2368	<	end else if FSQLRecord.FXSQLDA^.sqld = 0 then
2369	<	FSQLRecord.Count := 0;
2370	<	FSQLRecord.Initialize;
2371	<	end;
2372	<	end;
2373	<	end;
2374	<	FPrepared := True;
2375	<	if not (csDesigning in ComponentState) then
2376	<	MonitorHook.SQLPrepare(Self);
2377	<	except
2378	<	on E: Exception do begin
2379	<	if (FHandle <> nil) then
2380	<	FreeHandle;
2381	<	raise;
2382	<	end;
2383	<	end;
2384	<	end;
2385	<
2386	<	function TIBSQL.GetUniqueRelationName: String;
2387	<	begin
2388	<	if FPrepared and (FSQLType = SQLSelect) then
2389	<	result := FSQLRecord.UniqueRelationName
2390	<	else
2391	<	result := '';
2392	<	end;
2393	<
2394	<	procedure TIBSQL.SetSQL(Value: TStrings);
2395	<	begin
2396	<	if FSQL.Text <> Value.Text then
2397	<	begin
2398	<	FSQL.BeginUpdate;
2399	<	try
2400	<	FSQL.Assign(Value);
2401	<	finally
2402	<	FSQL.EndUpdate;
2403	<	end;
2404	<	end;
2405	<	end;
2406	<
2407	<	procedure TIBSQL.SetTransaction(Value: TIBTransaction);
2408	<	begin
2409	<	FBase.Transaction := Value;
2410	<	end;
2411	<
2412	<	procedure TIBSQL.SQLChanging(Sender: TObject);
2413	<	begin
2414	<	if Assigned(OnSQLChanging) then
2415	<	OnSQLChanging(Self);
2416	<	if FHandle <> nil then FreeHandle;
2417	<	end;
2418	<
2419	<	procedure TIBSQL.BeforeTransactionEnd(Sender: TObject);
2420	<	begin
2421	<	if (FOpen) then
2422	<	Close;
2423	<	end;
2424	<
2425	<	end.
1	>	{************************************************************************}
2	>	{                                                                        }
3	>	{       Borland Delphi Visual Component Library                          }
4	>	{       InterBase Express core components                                }
5	>	{                                                                        }
6	>	{       Copyright (c) 1998-2000 Inprise Corporation                      }
7	>	{                                                                        }
8	>	{    InterBase Express is based in part on the product                   }
9	>	{    Free IB Components, written by Gregory H. Deatz for                 }
10	>	{    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
11	>	{    Free IB Components is used under license.                           }
12	>	{                                                                        }
13	>	{    The contents of this file are subject to the InterBase              }
14	>	{    Public License Version 1.0 (the "License"); you may not             }
15	>	{    use this file except in compliance with the License. You            }
16	>	{    may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17	>	{    Software distributed under the License is distributed on            }
18	>	{    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either              }
19	>	{    express or implied. See the License for the specific language       }
20	>	{    governing rights and limitations under the License.                 }
21	>	{    The Original Code was created by InterBase Software Corporation     }
22	>	{       and its successors.                                              }
23	>	{    Portions created by Inprise Corporation are Copyright (C) Inprise   }
24	>	{       Corporation. All Rights Reserved.                                }
25	>	{    Contributor(s): Jeff Overcash                                       }
26	>	{                                                                        }
27	>	{    IBX For Lazarus (Firebird Express)                                  }
28	>	{    Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29	>	{    Portions created by MWA Software are copyright McCallum Whyman      }
30	>	{    Associates Ltd 2011                                                 }
31	>	{                                                                        }
32	>	{************************************************************************}
33	>
34	>	unit IBSQL;
35	>
36	>	{$Mode Delphi}
37	>
38	>	interface
39	>
40	>	uses
41	>	{$IFDEF WINDOWS }
42	>	Windows,
43	>	{$ELSE}
44	>	baseunix, unix,
45	>	{$ENDIF}
46	>	SysUtils, Classes, Forms, Controls, IBHeader,
47	>	IBErrorCodes, IBExternals, DB, IB, IBDatabase, IBUtils, IBXConst;
48	>
49	>	type
50	>	TIBSQL = class;
51	>	TIBXSQLDA = class;
52	>
53	>	{ TIBXSQLVAR }
54	>	TIBXSQLVAR = class(TObject)
55	>	private
56	>	FParent: TIBXSQLDA;
57	>	FSQL: TIBSQL;
58	>	FIndex: Integer;
59	>	FModified: Boolean;
60	>	FName: String;
61	>	FXSQLVAR: PXSQLVAR;       { Point to the PXSQLVAR in the owner object }
62	>
63	>	function AdjustScale(Value: Int64; Scale: Integer): Double;
64	>	function AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
65	>	function AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
66	>	function GetAsCurrency: Currency;
67	>	function GetAsInt64: Int64;
68	>	function GetAsDateTime: TDateTime;
69	>	function GetAsDouble: Double;
70	>	function GetAsFloat: Float;
71	>	function GetAsLong: Long;
72	>	function GetAsPointer: Pointer;
73	>	function GetAsQuad: TISC_QUAD;
74	>	function GetAsShort: Short;
75	>	function GetAsString: String;
76	>	function GetAsVariant: Variant;
77	>	function GetAsXSQLVAR: PXSQLVAR;
78	>	function GetIsNull: Boolean;
79	>	function GetIsNullable: Boolean;
80	>	function GetSize: Integer;
81	>	function GetSQLType: Integer;
82	>	procedure SetAsCurrency(Value: Currency);
83	>	procedure SetAsInt64(Value: Int64);
84	>	procedure SetAsDate(Value: TDateTime);
85	>	procedure SetAsTime(Value: TDateTime);
86	>	procedure SetAsDateTime(Value: TDateTime);
87	>	procedure SetAsDouble(Value: Double);
88	>	procedure SetAsFloat(Value: Float);
89	>	procedure SetAsLong(Value: Long);
90	>	procedure SetAsPointer(Value: Pointer);
91	>	procedure SetAsQuad(Value: TISC_QUAD);
92	>	procedure SetAsShort(Value: Short);
93	>	procedure SetAsString(Value: String);
94	>	procedure SetAsVariant(Value: Variant);
95	>	procedure SetAsXSQLVAR(Value: PXSQLVAR);
96	>	procedure SetIsNull(Value: Boolean);
97	>	procedure SetIsNullable(Value: Boolean);
98	>	public
99	>	constructor Create(Parent: TIBXSQLDA; Query: TIBSQL);
100	>	procedure Assign(Source: TIBXSQLVAR);
101	>	procedure Clear;
102	>	procedure LoadFromFile(const FileName: String);
103	>	procedure LoadFromStream(Stream: TStream);
104	>	procedure SaveToFile(const FileName: String);
105	>	procedure SaveToStream(Stream: TStream);
106	>	property AsDate: TDateTime read GetAsDateTime write SetAsDate;
107	>	property AsTime: TDateTime read GetAsDateTime write SetAsTime;
108	>	property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
109	>	property AsDouble: Double read GetAsDouble write SetAsDouble;
110	>	property AsFloat: Float read GetAsFloat write SetAsFloat;
111	>	property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
112	>	property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
113	>	property AsInteger: Integer read GetAsLong write SetAsLong;
114	>	property AsLong: Long read GetAsLong write SetAsLong;
115	>	property AsPointer: Pointer read GetAsPointer write SetAsPointer;
116	>	property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
117	>	property AsShort: Short read GetAsShort write SetAsShort;
118	>	property AsString: String read GetAsString write SetAsString;
119	>	property AsVariant: Variant read GetAsVariant write SetAsVariant;
120	>	property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
121	>	property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
122	>	property IsNull: Boolean read GetIsNull write SetIsNull;
123	>	property IsNullable: Boolean read GetIsNullable write SetIsNullable;
124	>	property Index: Integer read FIndex;
125	>	property Modified: Boolean read FModified write FModified;
126	>	property Name: String read FName;
127	>	property Size: Integer read GetSize;
128	>	property SQLType: Integer read GetSQLType;
129	>	property Value: Variant read GetAsVariant write SetAsVariant;
130	>	end;
131	>
132	>	TIBXSQLVARArray = Array of TIBXSQLVAR;
133	>
134	>	{ TIBXSQLVAR }
135	>	TIBXSQLDA = class(TObject)
136	>	protected
137	>	FSQL: TIBSQL;
138	>	FCount: Integer;
139	>	FNames: TStrings;
140	>	FSize: Integer;
141	>	FXSQLDA: PXSQLDA;
142	>	FXSQLVARs: TIBXSQLVARArray; { array of IBXQLVARs }
143	>	FUniqueRelationName: String;
144	>	function GetModified: Boolean;
145	>	function GetNames: String;
146	>	function GetRecordSize: Integer;
147	>	function GetXSQLDA: PXSQLDA;
148	>	function GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
149	>	function GetXSQLVARByName(Idx: String): TIBXSQLVAR;
150	>	procedure Initialize;
151	>	procedure SetCount(Value: Integer);
152	>	public
153	>	constructor Create(Query: TIBSQL);
154	>	destructor Destroy; override;
155	>	procedure AddName(FieldName: String; Idx: Integer);
156	>	function ByName(Idx: String): TIBXSQLVAR;
157	>	property AsXSQLDA: PXSQLDA read GetXSQLDA;
158	>	property Count: Integer read FCount write SetCount;
159	>	property Modified: Boolean read GetModified;
160	>	property Names: String read GetNames;
161	>	property RecordSize: Integer read GetRecordSize;
162	>	property Vars[Idx: Integer]: TIBXSQLVAR read GetXSQLVAR; default;
163	>	property UniqueRelationName: String read FUniqueRelationName;
164	>	end;
165	>
166	>	{ TIBBatch }
167	>
168	>	TIBBatch = class(TObject)
169	>	protected
170	>	FFilename: String;
171	>	FColumns: TIBXSQLDA;
172	>	FParams: TIBXSQLDA;
173	>	public
174	>	procedure ReadyFile; virtual; abstract;
175	>	property Columns: TIBXSQLDA read FColumns;
176	>	property Filename: String read FFilename write FFilename;
177	>	property Params: TIBXSQLDA read FParams;
178	>	end;
179	>
180	>	TIBBatchInput = class(TIBBatch)
181	>	public
182	>	function ReadParameters: Boolean; virtual; abstract;
183	>	end;
184	>
185	>	TIBBatchOutput = class(TIBBatch)
186	>	public
187	>	function WriteColumns: Boolean; virtual; abstract;
188	>	end;
189	>
190	>
191	>	{ TIBOutputDelimitedFile }
192	>	TIBOutputDelimitedFile = class(TIBBatchOutput)
193	>	protected
194	>	{$IFDEF UNIX}
195	>	FHandle: cint;
196	>	{$ELSE}
197	>	FHandle: THandle;
198	>	{$ENDIF}
199	>	FOutputTitles: Boolean;
200	>	FColDelimiter,
201	>	FRowDelimiter: string;
202	>	public
203	>	destructor Destroy; override;
204	>	procedure ReadyFile; override;
205	>	function WriteColumns: Boolean; override;
206	>	property ColDelimiter: string read FColDelimiter write FColDelimiter;
207	>	property OutputTitles: Boolean read FOutputTitles
208	>	write FOutputTitles;
209	>	property RowDelimiter: string read FRowDelimiter write FRowDelimiter;
210	>	end;
211	>
212	>	{ TIBInputDelimitedFile }
213	>	TIBInputDelimitedFile = class(TIBBatchInput)
214	>	protected
215	>	FColDelimiter,
216	>	FRowDelimiter: string;
217	>	FEOF: Boolean;
218	>	FFile: TFileStream;
219	>	FLookAhead: Char;
220	>	FReadBlanksAsNull: Boolean;
221	>	FSkipTitles: Boolean;
222	>	public
223	>	destructor Destroy; override;
224	>	function GetColumn(var Col: string): Integer;
225	>	function ReadParameters: Boolean; override;
226	>	procedure ReadyFile; override;
227	>	property ColDelimiter: string read FColDelimiter write FColDelimiter;
228	>	property ReadBlanksAsNull: Boolean read FReadBlanksAsNull
229	>	write FReadBlanksAsNull;
230	>	property RowDelimiter: string read FRowDelimiter write FRowDelimiter;
231	>	property SkipTitles: Boolean read FSkipTitles write FSkipTitles;
232	>	end;
233	>
234	>	{ TIBOutputRawFile }
235	>	TIBOutputRawFile = class(TIBBatchOutput)
236	>	protected
237	>	{$IFDEF UNIX}
238	>	FHandle: cint;
239	>	{$ELSE}
240	>	FHandle: THandle;
241	>	{$ENDIF}
242	>	public
243	>	destructor Destroy; override;
244	>	procedure ReadyFile; override;
245	>	function WriteColumns: Boolean; override;
246	>	end;
247	>
248	>	{ TIBInputRawFile }
249	>	TIBInputRawFile = class(TIBBatchInput)
250	>	protected
251	>	{$IFDEF UNIX}
252	>	FHandle: cint;
253	>	{$ELSE}
254	>	FHandle: THandle;
255	>	{$ENDIF}
256	>	public
257	>	destructor Destroy; override;
258	>	function ReadParameters: Boolean; override;
259	>	procedure ReadyFile; override;
260	>	end;
261	>
262	>	{ TIBSQL }
263	>	TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
264	>	SQLUpdate, SQLDelete, SQLDDL,
265	>	SQLGetSegment, SQLPutSegment,
266	>	SQLExecProcedure, SQLStartTransaction,
267	>	SQLCommit, SQLRollback,
268	>	SQLSelectForUpdate, SQLSetGenerator);
269	>
270	>	TIBSQL = class(TComponent)
271	>	private
272	>	FIBLoaded: Boolean;
273	>	function GetFieldCount: integer;
274	>	protected
275	>	FBase: TIBBase;
276	>	FBOF,                          { At BOF? }
277	>	FEOF,                          { At EOF? }
278	>	FGoToFirstRecordOnExecute,     { Automatically position record on first record after executing }
279	>	FOpen,                         { Is a cursor open? }
280	>	FPrepared: Boolean;            { Has the query been prepared? }
281	>	FRecordCount: Integer;         { How many records have been read so far? }
282	>	FCursor: String;               { Cursor name...}
283	>	FHandle: TISC_STMT_HANDLE;     { Once prepared, this accesses the SQL Query }
284	>	FOnSQLChanging: TNotifyEvent;  { Call this when the SQL is changing }
285	>	FSQL: TStrings;                { SQL Query (by user) }
286	>	FParamCheck: Boolean;          { Check for parameters? (just like TQuery) }
287	>	FProcessedSQL: TStrings;       { SQL Query (pre-processed for param labels) }
288	>	FSQLParams,                    { Any parameters to the query }
289	>	FSQLRecord: TIBXSQLDA;         { The current record }
290	>	FSQLType: TIBSQLTypes;         { Select, update, delete, insert, create, alter, etc...}
291	>	FGenerateParamNames: Boolean;  { Auto generate param names ?}
292	>	procedure DoBeforeDatabaseDisconnect(Sender: TObject);
293	>	function GetDatabase: TIBDatabase;
294	>	function GetDBHandle: PISC_DB_HANDLE;
295	>	function GetEOF: Boolean;
296	>	function GetFields(const Idx: Integer): TIBXSQLVAR;
297	>	function GetFieldIndex(FieldName: String): Integer;
298	>	function GetPlan: String;
299	>	function GetRecordCount: Integer;
300	>	function GetRowsAffected: Integer;
301	>	function GetSQLParams: TIBXSQLDA;
302	>	function GetTransaction: TIBTransaction;
303	>	function GetTRHandle: PISC_TR_HANDLE;
304	>	procedure PreprocessSQL;
305	>	procedure SetDatabase(Value: TIBDatabase);
306	>	procedure SetSQL(Value: TStrings);
307	>	procedure SetTransaction(Value: TIBTransaction);
308	>	procedure SQLChanging(Sender: TObject);
309	>	procedure BeforeTransactionEnd(Sender: TObject);
310	>	public
311	>	constructor Create(AOwner: TComponent); override;
312	>	destructor Destroy; override;
313	>	procedure BatchInput(InputObject: TIBBatchInput);
314	>	procedure BatchOutput(OutputObject: TIBBatchOutput);
315	>	function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
316	>	procedure CheckClosed;           { raise error if query is not closed. }
317	>	procedure CheckOpen;             { raise error if query is not open.}
318	>	procedure CheckValidStatement;   { raise error if statement is invalid.}
319	>	procedure Close;
320	>	function Current: TIBXSQLDA;
321	>	procedure ExecQuery;
322	>	function FieldByName(FieldName: String): TIBXSQLVAR;
323	>	function ParamByName(ParamName: String): TIBXSQLVAR;
324	>	procedure FreeHandle;
325	>	function Next: TIBXSQLDA;
326	>	procedure Prepare;
327	>	function GetUniqueRelationName: String;
328	>	property Bof: Boolean read FBOF;
329	>	property DBHandle: PISC_DB_HANDLE read GetDBHandle;
330	>	property Eof: Boolean read GetEOF;
331	>	property Fields[const Idx: Integer]: TIBXSQLVAR read GetFields;
332	>	property FieldIndex[FieldName: String]: Integer read GetFieldIndex;
333	>	property FieldCount: integer read GetFieldCount;
334	>	property Open: Boolean read FOpen;
335	>	property Params: TIBXSQLDA read GetSQLParams;
336	>	property Plan: String read GetPlan;
337	>	property Prepared: Boolean read FPrepared;
338	>	property RecordCount: Integer read GetRecordCount;
339	>	property RowsAffected: Integer read GetRowsAffected;
340	>	property SQLType: TIBSQLTypes read FSQLType;
341	>	property TRHandle: PISC_TR_HANDLE read GetTRHandle;
342	>	property Handle: TISC_STMT_HANDLE read FHandle;
343	>	property GenerateParamNames: Boolean read FGenerateParamNames write FGenerateParamNames;
344	>	property UniqueRelationName: String read GetUniqueRelationName;
345	>	published
346	>	property Database: TIBDatabase read GetDatabase write SetDatabase;
347	>	property GoToFirstRecordOnExecute: Boolean read FGoToFirstRecordOnExecute
348	>	write FGoToFirstRecordOnExecute
349	>	default True;
350	>	property ParamCheck: Boolean read FParamCheck write FParamCheck;
351	>	property SQL: TStrings read FSQL write SetSQL;
352	>	property Transaction: TIBTransaction read GetTransaction write SetTransaction;
353	>	property OnSQLChanging: TNotifyEvent read FOnSQLChanging write FOnSQLChanging;
354	>	end;
355	>
356	>	implementation
357	>
358	>	uses
359	>	IBIntf, IBBlob, Variants , IBSQLMonitor;
360	>
361	>	{ TIBXSQLVAR }
362	>	constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
363	>	begin
364	>	inherited Create;
365	>	FParent := Parent;
366	>	FSQL := Query;
367	>	end;
368	>
369	>	procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
370	>	var
371	>	szBuff: PChar;
372	>	s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
373	>	bSourceBlob, bDestBlob: Boolean;
374	>	iSegs: Int64;
375	>	iMaxSeg: Int64;
376	>	iSize: Int64;
377	>	iBlobType: Short;
378	>	begin
379	>	szBuff := nil;
380	>	bSourceBlob := True;
381	>	bDestBlob := True;
382	>	s_bhandle := nil;
383	>	d_bhandle := nil;
384	>	try
385	>	if (Source.IsNull) then
386	>	begin
387	>	IsNull := True;
388	>	exit;
389	>	end
390	>	else
391	>	if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
392	>	(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
393	>	exit; { arrays not supported }
394	>	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
395	>	(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
396	>	begin
397	>	AsXSQLVAR := Source.AsXSQLVAR;
398	>	exit;
399	>	end
400	>	else
401	>	if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
402	>	begin
403	>	szBuff := nil;
404	>	IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
405	>	Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
406	>	bSourceBlob := False;
407	>	iSize := Source.FXSQLVAR^.sqllen;
408	>	end
409	>	else
410	>	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
411	>	bDestBlob := False;
412	>
413	>	if bSourceBlob then
414	>	begin
415	>	{ read the blob }
416	>	Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
417	>	Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
418	>	0, nil), True);
419	>	try
420	>	IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
421	>	iBlobType);
422	>	szBuff := nil;
423	>	IBAlloc(szBuff, 0, iSize);
424	>	IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
425	>	finally
426	>	Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
427	>	end;
428	>	end;
429	>
430	>	if bDestBlob then
431	>	begin
432	>	{ write the blob }
433	>	FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
434	>	FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
435	>	0, nil), True);
436	>	try
437	>	IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
438	>	isNull := false
439	>	finally
440	>	FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
441	>	end;
442	>	end
443	>	else
444	>	begin
445	>	{ just copy the buffer }
446	>	FXSQLVAR.sqltype := SQL_TEXT;
447	>	FXSQLVAR.sqllen := iSize;
448	>	IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
449	>	Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
450	>	end;
451	>	finally
452	>	FreeMem(szBuff);
453	>	end;
454	>	end;
455	>
456	>	function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
457	>	var
458	>	Scaling : Int64;
459	>	i: Integer;
460	>	Val: Double;
461	>	begin
462	>	Scaling := 1; Val := Value;
463	>	if Scale > 0 then
464	>	begin
465	>	for i := 1 to Scale do
466	>	Scaling := Scaling * 10;
467	>	result := Val * Scaling;
468	>	end
469	>	else
470	>	if Scale < 0 then
471	>	begin
472	>	for i := -1 downto Scale do
473	>	Scaling := Scaling * 10;
474	>	result := Val / Scaling;
475	>	end
476	>	else
477	>	result := Val;
478	>	end;
479	>
480	>	function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
481	>	var
482	>	Scaling : Int64;
483	>	i: Integer;
484	>	Val: Int64;
485	>	begin
486	>	Scaling := 1; Val := Value;
487	>	if Scale > 0 then begin
488	>	for i := 1 to Scale do Scaling := Scaling * 10;
489	>	result := Val * Scaling;
490	>	end else if Scale < 0 then begin
491	>	for i := -1 downto Scale do Scaling := Scaling * 10;
492	>	result := Val div Scaling;
493	>	end else
494	>	result := Val;
495	>	end;
496	>
497	>	function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
498	>	var
499	>	Scaling : Int64;
500	>	i : Integer;
501	>	FractionText, PadText, CurrText: string;
502	>	begin
503	>	Result := 0;
504	>	Scaling := 1;
505	>	if Scale > 0 then
506	>	begin
507	>	for i := 1 to Scale do
508	>	Scaling := Scaling * 10;
509	>	result := Value * Scaling;
510	>	end
511	>	else
512	>	if Scale < 0 then
513	>	begin
514	>	for i := -1 downto Scale do
515	>	Scaling := Scaling * 10;
516	>	FractionText := IntToStr(abs(Value mod Scaling));
517	>	for i := Length(FractionText) to -Scale -1 do
518	>	PadText := '0' + PadText;
519	>	if Value < 0 then
520	>	CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
521	>	else
522	>	CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
523	>	try
524	>	result := StrToCurr(CurrText);
525	>	except
526	>	on E: Exception do
527	>	IBError(ibxeInvalidDataConversion, [nil]);
528	>	end;
529	>	end
530	>	else
531	>	result := Value;
532	>	end;
533	>
534	>	function TIBXSQLVAR.GetAsCurrency: Currency;
535	>	begin
536	>	result := 0;
537	>	if FSQL.Database.SQLDialect < 3 then
538	>	result := GetAsDouble
539	>	else begin
540	>	if not IsNull then
541	>	case FXSQLVAR^.sqltype and (not 1) of
542	>	SQL_TEXT, SQL_VARYING: begin
543	>	try
544	>	result := StrtoCurr(AsString);
545	>	except
546	>	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
547	>	end;
548	>	end;
549	>	SQL_SHORT:
550	>	result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
551	>	FXSQLVAR^.sqlscale);
552	>	SQL_LONG:
553	>	result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
554	>	FXSQLVAR^.sqlscale);
555	>	SQL_INT64:
556	>	result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
557	>	FXSQLVAR^.sqlscale);
558	>	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
559	>	result := Trunc(AsDouble);
560	>	else
561	>	IBError(ibxeInvalidDataConversion, [nil]);
562	>	end;
563	>	end;
564	>	end;
565	>
566	>	function TIBXSQLVAR.GetAsInt64: Int64;
567	>	begin
568	>	result := 0;
569	>	if not IsNull then
570	>	case FXSQLVAR^.sqltype and (not 1) of
571	>	SQL_TEXT, SQL_VARYING: begin
572	>	try
573	>	result := StrToInt64(AsString);
574	>	except
575	>	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
576	>	end;
577	>	end;
578	>	SQL_SHORT:
579	>	result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
580	>	FXSQLVAR^.sqlscale);
581	>	SQL_LONG:
582	>	result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
583	>	FXSQLVAR^.sqlscale);
584	>	SQL_INT64:
585	>	result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
586	>	FXSQLVAR^.sqlscale);
587	>	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
588	>	result := Trunc(AsDouble);
589	>	else
590	>	IBError(ibxeInvalidDataConversion, [nil]);
591	>	end;
592	>	end;
593	>
594	>	function TIBXSQLVAR.GetAsDateTime: TDateTime;
595	>	var
596	>	tm_date: TCTimeStructure;
597	>	msecs: word;
598	>	begin
599	>	result := 0;
600	>	if not IsNull then
601	>	case FXSQLVAR^.sqltype and (not 1) of
602	>	SQL_TEXT, SQL_VARYING: begin
603	>	try
604	>	result := StrToDate(AsString);
605	>	except
606	>	on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
607	>	end;
608	>	end;
609	>	SQL_TYPE_DATE: begin
610	>	isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
611	>	try
612	>	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
613	>	Word(tm_date.tm_mday));
614	>	except
615	>	on E: EConvertError do begin
616	>	IBError(ibxeInvalidDataConversion, [nil]);
617	>	end;
618	>	end;
619	>	end;
620	>	SQL_TYPE_TIME: begin
621	>	isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
622	>	try
623	>	msecs :=  (PISC_TIME(FXSQLVAR^.sqldata)^ mod 10000) div 10;
624	>	result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
625	>	Word(tm_date.tm_sec), msecs)
626	>	except
627	>	on E: EConvertError do begin
628	>	IBError(ibxeInvalidDataConversion, [nil]);
629	>	end;
630	>	end;
631	>	end;
632	>	SQL_TIMESTAMP: begin
633	>	isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
634	>	try
635	>	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
636	>	Word(tm_date.tm_mday));
637	>	msecs := (PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time mod 10000) div 10;
638	>	if result >= 0 then
639	>	result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
640	>	Word(tm_date.tm_sec), msecs)
641	>	else
642	>	result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
643	>	Word(tm_date.tm_sec), msecs)
644	>	except
645	>	on E: EConvertError do begin
646	>	IBError(ibxeInvalidDataConversion, [nil]);
647	>	end;
648	>	end;
649	>	end;
650	>	else
651	>	IBError(ibxeInvalidDataConversion, [nil]);
652	>	end;
653	>	end;
654	>
655	>	function TIBXSQLVAR.GetAsDouble: Double;
656	>	begin
657	>	result := 0;
658	>	if not IsNull then begin
659	>	case FXSQLVAR^.sqltype and (not 1) of
660	>	SQL_TEXT, SQL_VARYING: begin
661	>	try
662	>	result := StrToFloat(AsString);
663	>	except
664	>	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
665	>	end;
666	>	end;
667	>	SQL_SHORT:
668	>	result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
669	>	FXSQLVAR^.sqlscale);
670	>	SQL_LONG:
671	>	result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
672	>	FXSQLVAR^.sqlscale);
673	>	SQL_INT64:
674	>	result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
675	>	SQL_FLOAT:
676	>	result := PFloat(FXSQLVAR^.sqldata)^;
677	>	SQL_DOUBLE, SQL_D_FLOAT:
678	>	result := PDouble(FXSQLVAR^.sqldata)^;
679	>	else
680	>	IBError(ibxeInvalidDataConversion, [nil]);
681	>	end;
682	>	if  FXSQLVAR^.sqlscale <> 0 then
683	>	result :=
684	>	StrToFloat(FloatToStrF(result, fffixed, 15,
685	>	Abs(FXSQLVAR^.sqlscale) ));
686	>	end;
687	>	end;
688	>
689	>	function TIBXSQLVAR.GetAsFloat: Float;
690	>	begin
691	>	result := 0;
692	>	try
693	>	result := AsDouble;
694	>	except
695	>	on E: EOverflow do
696	>	IBError(ibxeInvalidDataConversion, [nil]);
697	>	end;
698	>	end;
699	>
700	>	function TIBXSQLVAR.GetAsLong: Long;
701	>	begin
702	>	result := 0;
703	>	if not IsNull then
704	>	case FXSQLVAR^.sqltype and (not 1) of
705	>	SQL_TEXT, SQL_VARYING: begin
706	>	try
707	>	result := StrToInt(AsString);
708	>	except
709	>	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
710	>	end;
711	>	end;
712	>	SQL_SHORT:
713	>	result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
714	>	FXSQLVAR^.sqlscale));
715	>	SQL_LONG:
716	>	result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
717	>	FXSQLVAR^.sqlscale));
718	>	SQL_INT64:
719	>	result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
720	>	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
721	>	result := Trunc(AsDouble);
722	>	else
723	>	IBError(ibxeInvalidDataConversion, [nil]);
724	>	end;
725	>	end;
726	>
727	>	function TIBXSQLVAR.GetAsPointer: Pointer;
728	>	begin
729	>	if not IsNull then
730	>	result := FXSQLVAR^.sqldata
731	>	else
732	>	result := nil;
733	>	end;
734	>
735	>	function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
736	>	begin
737	>	result.gds_quad_high := 0;
738	>	result.gds_quad_low := 0;
739	>	if not IsNull then
740	>	case FXSQLVAR^.sqltype and (not 1) of
741	>	SQL_BLOB, SQL_ARRAY, SQL_QUAD:
742	>	result := PISC_QUAD(FXSQLVAR^.sqldata)^;
743	>	else
744	>	IBError(ibxeInvalidDataConversion, [nil]);
745	>	end;
746	>	end;
747	>
748	>	function TIBXSQLVAR.GetAsShort: Short;
749	>	begin
750	>	result := 0;
751	>	try
752	>	result := AsLong;
753	>	except
754	>	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
755	>	end;
756	>	end;
757	>
758	>
759	>	function TIBXSQLVAR.GetAsString: String;
760	>	var
761	>	sz: PChar;
762	>	str_len: Integer;
763	>	ss: TStringStream;
764	>	begin
765	>	result := '';
766	>	{ Check null, if so return a default string }
767	>	if not IsNull then
768	>	case FXSQLVar^.sqltype and (not 1) of
769	>	SQL_ARRAY:
770	>	result := '(Array)'; {do not localize}
771	>	SQL_BLOB: begin
772	>	ss := TStringStream.Create('');
773	>	try
774	>	SaveToStream(ss);
775	>	result := ss.DataString;
776	>	finally
777	>	ss.Free;
778	>	end;
779	>	end;
780	>	SQL_TEXT, SQL_VARYING: begin
781	>	sz := FXSQLVAR^.sqldata;
782	>	if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
783	>	str_len := FXSQLVar^.sqllen
784	>	else begin
785	>	str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
786	>	Inc(sz, 2);
787	>	end;
788	>	SetString(result, sz, str_len);
789	>	if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
790	>	result := TrimRight(result);
791	>	end;
792	>	SQL_TYPE_DATE:
793	>	case FSQL.Database.SQLDialect of
794	>	1 : result := DateTimeToStr(AsDateTime);
795	>	3 : result := DateToStr(AsDateTime);
796	>	end;
797	>	SQL_TYPE_TIME :
798	>	result := TimeToStr(AsDateTime);
799	>	SQL_TIMESTAMP:
800	>	result := DateTimeToStr(AsDateTime);
801	>	SQL_SHORT, SQL_LONG:
802	>	if FXSQLVAR^.sqlscale = 0 then
803	>	result := IntToStr(AsLong)
804	>	else if FXSQLVAR^.sqlscale >= (-4) then
805	>	result := CurrToStr(AsCurrency)
806	>	else
807	>	result := FloatToStr(AsDouble);
808	>	SQL_INT64:
809	>	if FXSQLVAR^.sqlscale = 0 then
810	>	result := IntToStr(AsInt64)
811	>	else if FXSQLVAR^.sqlscale >= (-4) then
812	>	result := CurrToStr(AsCurrency)
813	>	else
814	>	result := FloatToStr(AsDouble);
815	>	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
816	>	result := FloatToStr(AsDouble);
817	>	else
818	>	IBError(ibxeInvalidDataConversion, [nil]);
819	>	end;
820	>	end;
821	>
822	>	function TIBXSQLVAR.GetAsVariant: Variant;
823	>	begin
824	>	if IsNull then
825	>	result := NULL
826	>	{ Check null, if so return a default string }
827	>	else case FXSQLVar^.sqltype and (not 1) of
828	>	SQL_ARRAY:
829	>	result := '(Array)'; {do not localize}
830	>	SQL_BLOB:
831	>	result := '(Blob)'; {do not localize}
832	>	SQL_TEXT, SQL_VARYING:
833	>	result := AsString;
834	>	SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
835	>	result := AsDateTime;
836	>	SQL_SHORT, SQL_LONG:
837	>	if FXSQLVAR^.sqlscale = 0 then
838	>	result := AsLong
839	>	else if FXSQLVAR^.sqlscale >= (-4) then
840	>	result := AsCurrency
841	>	else
842	>	result := AsDouble;
843	>	SQL_INT64:
844	>	if FXSQLVAR^.sqlscale = 0 then
845	>	IBError(ibxeInvalidDataConversion, [nil])
846	>	else if FXSQLVAR^.sqlscale >= (-4) then
847	>	result := AsCurrency
848	>	else
849	>	result := AsDouble;
850	>	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
851	>	result := AsDouble;
852	>	else
853	>	IBError(ibxeInvalidDataConversion, [nil]);
854	>	end;
855	>	end;
856	>
857	>	function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
858	>	begin
859	>	result := FXSQLVAR;
860	>	end;
861	>
862	>	function TIBXSQLVAR.GetIsNull: Boolean;
863	>	begin
864	>	result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
865	>	end;
866	>
867	>	function TIBXSQLVAR.GetIsNullable: Boolean;
868	>	begin
869	>	result := (FXSQLVAR^.sqltype and 1 = 1);
870	>	end;
871	>
872	>	procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
873	>	var
874	>	fs: TFileStream;
875	>	begin
876	>	fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
877	>	try
878	>	LoadFromStream(fs);
879	>	finally
880	>	fs.Free;
881	>	end;
882	>	end;
883	>
884	>	procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
885	>	var
886	>	bs: TIBBlobStream;
887	>	begin
888	>	bs := TIBBlobStream.Create;
889	>	try
890	>	bs.Mode := bmWrite;
891	>	bs.Database := FSQL.Database;
892	>	bs.Transaction := FSQL.Transaction;
893	>	Stream.Seek(0, soFromBeginning);
894	>	bs.LoadFromStream(Stream);
895	>	bs.Finalize;
896	>	AsQuad := bs.BlobID;
897	>	finally
898	>	bs.Free;
899	>	end;
900	>	end;
901	>
902	>	procedure TIBXSQLVAR.SaveToFile(const FileName: String);
903	>	var
904	>	fs: TFileStream;
905	>	begin
906	>	fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
907	>	try
908	>	SaveToStream(fs);
909	>	finally
910	>	fs.Free;
911	>	end;
912	>	end;
913	>
914	>	procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
915	>	var
916	>	bs: TIBBlobStream;
917	>	begin
918	>	bs := TIBBlobStream.Create;
919	>	try
920	>	bs.Mode := bmRead;
921	>	bs.Database := FSQL.Database;
922	>	bs.Transaction := FSQL.Transaction;
923	>	bs.BlobID := AsQuad;
924	>	bs.SaveToStream(Stream);
925	>	finally
926	>	bs.Free;
927	>	end;
928	>	end;
929	>
930	>	function TIBXSQLVAR.GetSize: Integer;
931	>	begin
932	>	result := FXSQLVAR^.sqllen;
933	>	end;
934	>
935	>	function TIBXSQLVAR.GetSQLType: Integer;
936	>	begin
937	>	result := FXSQLVAR^.sqltype and (not 1);
938	>	end;
939	>
940	>	procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
941	>	var
942	>	xvar: TIBXSQLVAR;
943	>	i: Integer;
944	>	begin
945	>	if FSQL.Database.SQLDialect < 3 then
946	>	AsDouble := Value
947	>	else
948	>	begin
949	>	if IsNullable then
950	>	IsNull := False;
951	>	for i := 0 to FParent.FCount - 1 do
952	>	if FParent.FNames[i] = FName then
953	>	begin
954	>	xvar := FParent[i];
955	>	xvar.FXSQLVAR^.sqltype := SQL_INT64 or (xvar.FXSQLVAR^.sqltype and 1);
956	>	xvar.FXSQLVAR^.sqlscale := -4;
957	>	xvar.FXSQLVAR^.sqllen := SizeOf(Int64);
958	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
959	>	PCurrency(xvar.FXSQLVAR^.sqldata)^ := Value;
960	>	xvar.FModified := True;
961	>	end;
962	>	end;
963	>	end;
964	>
965	>	procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
966	>	var
967	>	i: Integer;
968	>	xvar: TIBXSQLVAR;
969	>	begin
970	>	if IsNullable then
971	>	IsNull := False;
972	>	for i := 0 to FParent.FCount - 1 do
973	>	if FParent.FNames[i] = FName then
974	>	begin
975	>	xvar := FParent[i];
976	>	xvar.FXSQLVAR^.sqltype := SQL_INT64 or (xvar.FXSQLVAR^.sqltype and 1);
977	>	xvar.FXSQLVAR^.sqlscale := 0;
978	>	xvar.FXSQLVAR^.sqllen := SizeOf(Int64);
979	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
980	>	PInt64(xvar.FXSQLVAR^.sqldata)^ := Value;
981	>	xvar.FModified := True;
982	>	end;
983	>	end;
984	>
985	>	procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
986	>	var
987	>	i: Integer;
988	>	tm_date: TCTimeStructure;
989	>	Yr, Mn, Dy: Word;
990	>	xvar: TIBXSQLVAR;
991	>	begin
992	>	if FSQL.Database.SQLDialect < 3 then
993	>	begin
994	>	AsDateTime := Value;
995	>	exit;
996	>	end;
997	>	if IsNullable then
998	>	IsNull := False;
999	>	for i := 0 to FParent.FCount - 1 do
1000	>	if FParent.FNames[i] = FName then
1001	>	begin
1002	>	xvar := FParent[i];
1003	>	xvar.FXSQLVAR^.sqltype := SQL_TYPE_DATE or (xvar.FXSQLVAR^.sqltype and 1);
1004	>	DecodeDate(Value, Yr, Mn, Dy);
1005	>	with tm_date do begin
1006	>	tm_sec := 0;
1007	>	tm_min := 0;
1008	>	tm_hour := 0;
1009	>	tm_mday := Dy;
1010	>	tm_mon := Mn - 1;
1011	>	tm_year := Yr - 1900;
1012	>	end;
1013	>	xvar.FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
1014	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1015	>	isc_encode_sql_date(@tm_date, PISC_DATE(xvar.FXSQLVAR^.sqldata));
1016	>	xvar.FModified := True;
1017	>	end;
1018	>	end;
1019	>
1020	>	procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
1021	>	var
1022	>	i: Integer;
1023	>	tm_date: TCTimeStructure;
1024	>	Hr, Mt, S, Ms: Word;
1025	>	xvar: TIBXSQLVAR;
1026	>	begin
1027	>	if FSQL.Database.SQLDialect < 3 then
1028	>	begin
1029	>	AsDateTime := Value;
1030	>	exit;
1031	>	end;
1032	>	if IsNullable then
1033	>	IsNull := False;
1034	>	for i := 0 to FParent.FCount - 1 do
1035	>	if FParent.FNames[i] = FName then
1036	>	begin
1037	>	xvar := FParent[i];
1038	>	xvar.FXSQLVAR^.sqltype := SQL_TYPE_TIME or (xvar.FXSQLVAR^.sqltype and 1);
1039	>	DecodeTime(Value, Hr, Mt, S, Ms);
1040	>	with tm_date do begin
1041	>	tm_sec := S;
1042	>	tm_min := Mt;
1043	>	tm_hour := Hr;
1044	>	tm_mday := 0;
1045	>	tm_mon := 0;
1046	>	tm_year := 0;
1047	>	end;
1048	>	xvar.FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
1049	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1050	>	isc_encode_sql_time(@tm_date, PISC_TIME(xvar.FXSQLVAR^.sqldata));
1051	>	if Ms > 0 then
1052	>	Inc(PISC_TIME(xvar.FXSQLVAR^.sqldata)^,Ms*10);
1053	>	xvar.FModified := True;
1054	>	end;
1055	>	end;
1056	>
1057	>	procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
1058	>	var
1059	>	i: Integer;
1060	>	tm_date: TCTimeStructure;
1061	>	Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
1062	>	xvar: TIBXSQLVAR;
1063	>	begin
1064	>	if IsNullable then
1065	>	IsNull := False;
1066	>	for i := 0 to FParent.FCount - 1 do
1067	>	if FParent.FNames[i] = FName then
1068	>	begin
1069	>	xvar := FParent[i];
1070	>	xvar.FXSQLVAR^.sqltype := SQL_TIMESTAMP or (xvar.FXSQLVAR^.sqltype and 1);
1071	>	DecodeDate(Value, Yr, Mn, Dy);
1072	>	DecodeTime(Value, Hr, Mt, S, Ms);
1073	>	with tm_date do begin
1074	>	tm_sec := S;
1075	>	tm_min := Mt;
1076	>	tm_hour := Hr;
1077	>	tm_mday := Dy;
1078	>	tm_mon := Mn - 1;
1079	>	tm_year := Yr - 1900;
1080	>	end;
1081	>	xvar.FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1082	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1083	>	isc_encode_date(@tm_date, PISC_QUAD(xvar.FXSQLVAR^.sqldata));
1084	>	if Ms > 0 then
1085	>	Inc(PISC_TIMESTAMP(xvar.FXSQLVAR^.sqldata)^.timestamp_time,Ms*10);
1086	>	xvar.FModified := True;
1087	>	end;
1088	>	end;
1089	>
1090	>	procedure TIBXSQLVAR.SetAsDouble(Value: Double);
1091	>	var
1092	>	i: Integer;
1093	>	xvar: TIBXSQLVAR;
1094	>	begin
1095	>	if IsNullable then
1096	>	IsNull := False;
1097	>	for i := 0 to FParent.FCount - 1 do
1098	>	if FParent.FNames[i] = FName then
1099	>	begin
1100	>	xvar := FParent[i];
1101	>	xvar.FXSQLVAR^.sqltype := SQL_DOUBLE or (xvar.FXSQLVAR^.sqltype and 1);
1102	>	xvar.FXSQLVAR^.sqllen := SizeOf(Double);
1103	>	xvar.FXSQLVAR^.sqlscale := 0;
1104	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1105	>	PDouble(xvar.FXSQLVAR^.sqldata)^ := Value;
1106	>	xvar.FModified := True;
1107	>	end;
1108	>	end;
1109	>
1110	>	procedure TIBXSQLVAR.SetAsFloat(Value: Float);
1111	>	var
1112	>	i: Integer;
1113	>	xvar: TIBXSQLVAR;
1114	>	begin
1115	>	if IsNullable then
1116	>	IsNull := False;
1117	>	for i := 0 to FParent.FCount - 1 do
1118	>	if FParent.FNames[i] = FName then
1119	>	begin
1120	>	xvar := FParent[i];
1121	>	xvar.FXSQLVAR^.sqltype := SQL_FLOAT or (xvar.FXSQLVAR^.sqltype and 1);
1122	>	xvar.FXSQLVAR^.sqllen := SizeOf(Float);
1123	>	xvar.FXSQLVAR^.sqlscale := 0;
1124	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1125	>	PSingle(xvar.FXSQLVAR^.sqldata)^ := Value;
1126	>	xvar.FModified := True;
1127	>	end;
1128	>	end;
1129	>
1130	>	procedure TIBXSQLVAR.SetAsLong(Value: Long);
1131	>	var
1132	>	i: Integer;
1133	>	xvar: TIBXSQLVAR;
1134	>	begin
1135	>	if IsNullable then
1136	>	IsNull := False;
1137	>	for i := 0 to FParent.FCount - 1 do
1138	>	if FParent.FNames[i] = FName then
1139	>	begin
1140	>	xvar := FParent[i];
1141	>	xvar.FXSQLVAR^.sqltype := SQL_LONG or (xvar.FXSQLVAR^.sqltype and 1);
1142	>	xvar.FXSQLVAR^.sqllen := SizeOf(Long);
1143	>	xvar.FXSQLVAR^.sqlscale := 0;
1144	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1145	>	PLong(xvar.FXSQLVAR^.sqldata)^ := Value;
1146	>	xvar.FModified := True;
1147	>	end;
1148	>	end;
1149	>
1150	>	procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
1151	>	var
1152	>	i: Integer;
1153	>	xvar: TIBXSQLVAR;
1154	>	begin
1155	>	if IsNullable and (Value = nil) then
1156	>	IsNull := True
1157	>	else begin
1158	>	IsNull := False;
1159	>	for i := 0 to FParent.FCount - 1 do
1160	>	if FParent.FNames[i] = FName then
1161	>	begin
1162	>	xvar := FParent[i];
1163	>	xvar.FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1164	>	Move(Value^, xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen);
1165	>	xvar.FModified := True;
1166	>	end;
1167	>	end;
1168	>	end;
1169	>
1170	>	procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
1171	>	var
1172	>	i: Integer;
1173	>	xvar: TIBXSQLVAR;
1174	>	begin
1175	>	if IsNullable then
1176	>	IsNull := False;
1177	>	for i := 0 to FParent.FCount - 1 do
1178	>	if FParent.FNames[i] = FName then
1179	>	begin
1180	>	xvar := FParent[i];
1181	>	if (xvar.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
1182	>	(xvar.FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
1183	>	IBError(ibxeInvalidDataConversion, [nil]);
1184	>	xvar.FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1185	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1186	>	PISC_QUAD(xvar.FXSQLVAR^.sqldata)^ := Value;
1187	>	xvar.FModified := True;
1188	>	end;
1189	>	end;
1190	>
1191	>	procedure TIBXSQLVAR.SetAsShort(Value: Short);
1192	>	var
1193	>	i: Integer;
1194	>	xvar: TIBXSQLVAR;
1195	>	begin
1196	>	if IsNullable then
1197	>	IsNull := False;
1198	>	for i := 0 to FParent.FCount - 1 do
1199	>	if FParent.FNames[i] = FName then
1200	>	begin
1201	>	xvar := FParent[i];
1202	>	xvar.FXSQLVAR^.sqltype := SQL_SHORT or (xvar.FXSQLVAR^.sqltype and 1);
1203	>	xvar.FXSQLVAR^.sqllen := SizeOf(Short);
1204	>	xvar.FXSQLVAR^.sqlscale := 0;
1205	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
1206	>	PShort(xvar.FXSQLVAR^.sqldata)^ := Value;
1207	>	xvar.FModified := True;
1208	>	end;
1209	>	end;
1210	>
1211	>	procedure TIBXSQLVAR.SetAsString(Value: String);
1212	>	var
1213	>	stype: Integer;
1214	>	ss: TStringStream;
1215	>
1216	>	procedure SetStringValue;
1217	>	var
1218	>	i: Integer;
1219	>	xvar: TIBXSQLVAR;
1220	>	begin
1221	>	for i := 0 to FParent.FCount - 1 do
1222	>	if FParent.FNames[i] = FName then
1223	>	begin
1224	>	xvar := FParent[i];
1225	>	if (xvar.FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
1226	>	(xvar.FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
1227	>	Move(Value[1], xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen)
1228	>	else begin
1229	>	xvar.FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1230	>	xvar.FXSQLVAR^.sqllen := Length(Value);
1231	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen + 1);
1232	>	if (Length(Value) > 0) then
1233	>	Move(Value[1], xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen);
1234	>	end;
1235	>	xvar.FModified := True;
1236	>	end;
1237	>	end;
1238	>
1239	>	begin
1240	>	if IsNullable then
1241	>	IsNull := False;
1242	>	stype := FXSQLVAR^.sqltype and (not 1);
1243	>	if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
1244	>	SetStringValue
1245	>	else begin
1246	>	if (stype = SQL_BLOB) then
1247	>	begin
1248	>	ss := TStringStream.Create(Value);
1249	>	try
1250	>	LoadFromStream(ss);
1251	>	finally
1252	>	ss.Free;
1253	>	end;
1254	>	end
1255	>	else if Value = '' then
1256	>	IsNull := True
1257	>	else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
1258	>	(stype = SQL_TYPE_TIME) then
1259	>	SetAsDateTime(StrToDateTime(Value))
1260	>	else
1261	>	SetStringValue;
1262	>	end;
1263	>	end;
1264	>
1265	>	procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
1266	>	begin
1267	>	if VarIsNull(Value) then
1268	>	IsNull := True
1269	>	else case VarType(Value) of
1270	>	varEmpty, varNull:
1271	>	IsNull := True;
1272	>	varSmallint, varInteger, varByte:
1273	>	AsLong := Value;
1274	>	varSingle, varDouble:
1275	>	AsDouble := Value;
1276	>	varCurrency:
1277	>	AsCurrency := Value;
1278	>	varBoolean:
1279	>	if Value then
1280	>	AsLong := ISC_TRUE
1281	>	else
1282	>	AsLong := ISC_FALSE;
1283	>	varDate:
1284	>	AsDateTime := Value;
1285	>	varOleStr, varString:
1286	>	AsString := Value;
1287	>	varArray:
1288	>	IBError(ibxeNotSupported, [nil]);
1289	>	varByRef, varDispatch, varError, varUnknown, varVariant:
1290	>	IBError(ibxeNotPermitted, [nil]);
1291	>	end;
1292	>	end;
1293	>
1294	>	procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
1295	>	var
1296	>	i: Integer;
1297	>	xvar: TIBXSQLVAR;
1298	>	sqlind: PShort;
1299	>	sqldata: PChar;
1300	>	local_sqllen: Integer;
1301	>	begin
1302	>	for i := 0 to FParent.FCount - 1 do
1303	>	if FParent.FNames[i] = FName then
1304	>	begin
1305	>	xvar := FParent[i];
1306	>	sqlind := xvar.FXSQLVAR^.sqlind;
1307	>	sqldata := xvar.FXSQLVAR^.sqldata;
1308	>	Move(Value^, xvar.FXSQLVAR^, SizeOf(TXSQLVAR));
1309	>	xvar.FXSQLVAR^.sqlind := sqlind;
1310	>	xvar.FXSQLVAR^.sqldata := sqldata;
1311	>	if (Value^.sqltype and 1 = 1) then
1312	>	begin
1313	>	if (xvar.FXSQLVAR^.sqlind = nil) then
1314	>	IBAlloc(xvar.FXSQLVAR^.sqlind, 0, SizeOf(Short));
1315	>	xvar.FXSQLVAR^.sqlind^ := Value^.sqlind^;
1316	>	end
1317	>	else
1318	>	if (xvar.FXSQLVAR^.sqlind <> nil) then
1319	>	ReallocMem(xvar.FXSQLVAR^.sqlind, 0);
1320	>	if ((xvar.FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
1321	>	local_sqllen := xvar.FXSQLVAR^.sqllen + 2
1322	>	else
1323	>	local_sqllen := xvar.FXSQLVAR^.sqllen;
1324	>	FXSQLVAR^.sqlscale := Value^.sqlscale;
1325	>	IBAlloc(xvar.FXSQLVAR^.sqldata, 0, local_sqllen);
1326	>	Move(Value^.sqldata[0], xvar.FXSQLVAR^.sqldata[0], local_sqllen);
1327	>	xvar.FModified := True;
1328	>	end;
1329	>	end;
1330	>
1331	>	procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
1332	>	var
1333	>	i: Integer;
1334	>	xvar: TIBXSQLVAR;
1335	>	begin
1336	>	if Value then
1337	>	begin
1338	>	if not IsNullable then
1339	>	IsNullable := True;
1340	>	for i := 0 to FParent.FCount - 1 do
1341	>	if FParent.FNames[i] = FName then
1342	>	begin
1343	>	xvar := FParent[i];
1344	>	if Assigned(xvar.FXSQLVAR^.sqlind) then
1345	>	xvar.FXSQLVAR^.sqlind^ := -1;
1346	>	xvar.FModified := True;
1347	>	end;
1348	>	end
1349	>	else
1350	>	if ((not Value) and IsNullable) then
1351	>	begin
1352	>	for i := 0 to FParent.FCount - 1 do
1353	>	if FParent.FNames[i] = FName then
1354	>	begin
1355	>	xvar := FParent[i];
1356	>	if Assigned(xvar.FXSQLVAR^.sqlind) then
1357	>	xvar.FXSQLVAR^.sqlind^ := 0;
1358	>	xvar.FModified := True;
1359	>	end;
1360	>	end;
1361	>	end;
1362	>
1363	>	procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
1364	>	var
1365	>	i: Integer;
1366	>	xvar: TIBXSQLVAR;
1367	>	begin
1368	>	for i := 0 to FParent.FCount - 1 do
1369	>	if FParent.FNames[i] = FName then
1370	>	begin
1371	>	xvar := FParent[i];
1372	>	if (Value <> IsNullable) then
1373	>	begin
1374	>	if Value then
1375	>	begin
1376	>	xvar.FXSQLVAR^.sqltype := xvar.FXSQLVAR^.sqltype or 1;
1377	>	IBAlloc(xvar.FXSQLVAR^.sqlind, 0, SizeOf(Short));
1378	>	end
1379	>	else
1380	>	begin
1381	>	xvar.FXSQLVAR^.sqltype := xvar.FXSQLVAR^.sqltype and (not 1);
1382	>	ReallocMem(xvar.FXSQLVAR^.sqlind, 0);
1383	>	end;
1384	>	end;
1385	>	end;
1386	>	end;
1387	>
1388	>	procedure TIBXSQLVAR.Clear;
1389	>	begin
1390	>	IsNull := true;
1391	>	end;
1392	>
1393	>
1394	>	{ TIBXSQLDA }
1395	>	constructor TIBXSQLDA.Create(Query: TIBSQL);
1396	>	begin
1397	>	inherited Create;
1398	>	FSQL := Query;
1399	>	FNames := TStringList.Create;
1400	>	FSize := 0;
1401	>	FUniqueRelationName := '';
1402	>	end;
1403	>
1404	>	destructor TIBXSQLDA.Destroy;
1405	>	var
1406	>	i: Integer;
1407	>	begin
1408	>	FNames.Free;
1409	>	if FXSQLDA <> nil then
1410	>	begin
1411	>	for i := 0 to FSize - 1 do
1412	>	begin
1413	>	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
1414	>	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
1415	>	FXSQLVARs[i].Free ;
1416	>	end;
1417	>	FreeMem(FXSQLDA);
1418	>	FXSQLDA := nil;
1419	>	FXSQLVARs := nil;
1420	>	end;
1421	>	inherited Destroy;
1422	>	end;
1423	>
1424	>	procedure TIBXSQLDA.AddName(FieldName: String; Idx: Integer);
1425	>	var
1426	>	fn: String;
1427	>	begin
1428	>	fn := FormatIdentifierValue(FSQL.Database.SQLDialect, FieldName);
1429	>	while FNames.Count <= Idx do
1430	>	FNames.Add('');
1431	>	FNames[Idx] := fn;
1432	>	FXSQLVARs[Idx].FName := fn;
1433	>	FXSQLVARs[Idx].FIndex := Idx;
1434	>	end;
1435	>
1436	>	function TIBXSQLDA.GetModified: Boolean;
1437	>	var
1438	>	i: Integer;
1439	>	begin
1440	>	result := False;
1441	>	for i := 0 to FCount - 1 do
1442	>	if FXSQLVARs[i].Modified then
1443	>	begin
1444	>	result := True;
1445	>	exit;
1446	>	end;
1447	>	end;
1448	>
1449	>	function TIBXSQLDA.GetNames: String;
1450	>	begin
1451	>	result := FNames.Text;
1452	>	end;
1453	>
1454	>	function TIBXSQLDA.GetRecordSize: Integer;
1455	>	begin
1456	>	result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
1457	>	end;
1458	>
1459	>	function TIBXSQLDA.GetXSQLDA: PXSQLDA;
1460	>	begin
1461	>	result := FXSQLDA;
1462	>	end;
1463	>
1464	>	function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
1465	>	begin
1466	>	if (Idx < 0) or (Idx >= FCount) then
1467	>	IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
1468	>	result := FXSQLVARs[Idx]
1469	>	end;
1470	>
1471	>	function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
1472	>	begin
1473	>	result := GetXSQLVARByName(Idx);
1474	>	if result = nil then
1475	>	IBError(ibxeFieldNotFound, [Idx]);
1476	>	end;
1477	>
1478	>	function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
1479	>	var
1480	>	s: String;
1481	>	i, Cnt: Integer;
1482	>	begin
1483	>	s := FormatIdentifierValue(FSQL.Database.SQLDialect, Idx);
1484	>	i := 0;
1485	>	Cnt := FNames.Count;
1486	>	while (i < Cnt) and (FNames[i] <> s) do Inc(i);
1487	>	if i = Cnt then
1488	>	result := nil
1489	>	else
1490	>	result := GetXSQLVAR(i);
1491	>	end;
1492	>
1493	>	procedure TIBXSQLDA.Initialize;
1494	>	var
1495	>	i, j, j_len: Integer;
1496	>	NamesWereEmpty: Boolean;
1497	>	st: String;
1498	>	bUnique: Boolean;
1499	>	begin
1500	>	bUnique := True;
1501	>	NamesWereEmpty := (FNames.Count = 0);
1502	>	if FXSQLDA <> nil then
1503	>	begin
1504	>	for i := 0 to FCount - 1 do
1505	>	begin
1506	>	with FXSQLVARs[i].Data^ do
1507	>	begin
1508	>	if bUnique and (strpas(relname) <> '') then
1509	>	begin
1510	>	if FUniqueRelationName = '' then
1511	>	FUniqueRelationName := strpas(relname)
1512	>	else
1513	>	if strpas(relname) <> FUniqueRelationName then
1514	>	begin
1515	>	FUniqueRelationName := '';
1516	>	bUnique := False;
1517	>	end;
1518	>	end;
1519	>	if NamesWereEmpty then
1520	>	begin
1521	>	st := strpas(aliasname);
1522	>	if st = '' then
1523	>	begin
1524	>	st := 'F_'; {do not localize}
1525	>	aliasname_length := 2;
1526	>	j := 1; j_len := 1;
1527	>	StrPCopy(aliasname, st + IntToStr(j));
1528	>	end
1529	>	else
1530	>	begin
1531	>	StrPCopy(aliasname, st);
1532	>	j := 0; j_len := 0;
1533	>	end;
1534	>	while GetXSQLVARByName(strpas(aliasname)) <> nil do
1535	>	begin
1536	>	Inc(j); j_len := Length(IntToStr(j));
1537	>	if j_len + aliasname_length > 31 then
1538	>	StrPCopy(aliasname,
1539	>	Copy(st, 1, 31 - j_len) +
1540	>	IntToStr(j))
1541	>	else
1542	>	StrPCopy(aliasname, st + IntToStr(j));
1543	>	end;
1544	>	Inc(aliasname_length, j_len);
1545	>	AddName(strpas(aliasname), i);
1546	>	end;
1547	>	case sqltype and (not 1) of
1548	>	SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
1549	>	SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT,
1550	>	SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
1551	>	if (sqllen = 0) then
1552	>	{ Make sure you get a valid pointer anyway
1553	>	select '' from foo }
1554	>	IBAlloc(sqldata, 0, 1)
1555	>	else
1556	>	IBAlloc(sqldata, 0, sqllen)
1557	>	end;
1558	>	SQL_VARYING: begin
1559	>	IBAlloc(sqldata, 0, sqllen + 2);
1560	>	end;
1561	>	else
1562	>	IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
1563	>	end;
1564	>	if (sqltype and 1 = 1) then
1565	>	IBAlloc(sqlind, 0, SizeOf(Short))
1566	>	else
1567	>	if (sqlind <> nil) then
1568	>	ReallocMem(sqlind, 0);
1569	>	end;
1570	>	end;
1571	>	end;
1572	>	end;
1573	>
1574	>	procedure TIBXSQLDA.SetCount(Value: Integer);
1575	>	var
1576	>	i, OldSize: Integer;
1577	>	p : PXSQLVAR;
1578	>	begin
1579	>	FNames.Clear;
1580	>	FCount := Value;
1581	>	if FCount = 0 then
1582	>	FUniqueRelationName := ''
1583	>	else
1584	>	begin
1585	>	if FSize > 0 then
1586	>	OldSize := XSQLDA_LENGTH(FSize)
1587	>	else
1588	>	OldSize := 0;
1589	>	if FCount > FSize then
1590	>	begin
1591	>	IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
1592	>	SetLength(FXSQLVARs, FCount);
1593	>	FXSQLDA^.version := SQLDA_VERSION1;
1594	>	p := @FXSQLDA^.sqlvar[0];
1595	>	for i := 0 to FCount - 1 do
1596	>	begin
1597	>	if i >= FSize then
1598	>	FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
1599	>	FXSQLVARs[i].FXSQLVAR := p;
1600	>	p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
1601	>	end;
1602	>	FSize := FCount;
1603	>	end;
1604	>	if FSize > 0 then
1605	>	begin
1606	>	FXSQLDA^.sqln := Value;
1607	>	FXSQLDA^.sqld := Value;
1608	>	end;
1609	>	end;
1610	>	end;
1611	>
1612	>	{ TIBOutputDelimitedFile }
1613	>
1614	>	destructor TIBOutputDelimitedFile.Destroy;
1615	>	begin
1616	>	{$IFDEF UNIX}
1617	>	if FHandle <> -1 then
1618	>	fpclose(FHandle);
1619	>	{$ELSE}
1620	>	if FHandle <> 0 then
1621	>	begin
1622	>	FlushFileBuffers(FHandle);
1623	>	CloseHandle(FHandle);
1624	>	end;
1625	>	{$ENDIF}
1626	>	inherited Destroy;
1627	>	end;
1628	>
1629	>	procedure TIBOutputDelimitedFile.ReadyFile;
1630	>	var
1631	>	i: Integer;
1632	>	{$IFDEF UNIX}
1633	>	BytesWritten: cint;
1634	>	{$ELSE}
1635	>	BytesWritten: DWORD;
1636	>	{$ENDIF}
1637	>	st: string;
1638	>	begin
1639	>	if FColDelimiter = '' then
1640	>	FColDelimiter := TAB;
1641	>	if FRowDelimiter = '' then
1642	>	FRowDelimiter := CRLF;
1643	>	{$IFDEF UNIX}
1644	>	FHandle := FpOpen(Filename,O_WrOnly or O_Creat);
1645	>	{$ELSE}
1646	>	FHandle := CreateFile(PChar(Filename), GENERIC_WRITE, 0, nil, CREATE_ALWAYS,
1647	>	FILE_ATTRIBUTE_NORMAL, 0);
1648	>	if FHandle = INVALID_HANDLE_VALUE then
1649	>	FHandle := 0;
1650	>	{$ENDIF}
1651	>	if FOutputTitles then
1652	>	begin
1653	>	for i := 0 to Columns.Count - 1 do
1654	>	if i = 0 then
1655	>	st := strpas(Columns[i].Data^.aliasname)
1656	>	else
1657	>	st := st + FColDelimiter + strpas(Columns[i].Data^.aliasname);
1658	>	st := st + FRowDelimiter;
1659	>	{$IFDEF UNIX}
1660	>	if FHandle <> -1 then
1661	>	BytesWritten := FpWrite(FHandle,st[1],Length(st));
1662	>	if BytesWritten = -1 then
1663	>	raise Exception.Create('File Write Error');
1664	>	{$ELSE}
1665	>	WriteFile(FHandle, st[1], Length(st), BytesWritten, nil);
1666	>	{$ENDIF}
1667	>	end;
1668	>	end;
1669	>
1670	>	function TIBOutputDelimitedFile.WriteColumns: Boolean;
1671	>	var
1672	>	i: Integer;
1673	>	{$IFDEF UNIX}
1674	>	BytesWritten: cint;
1675	>	{$ELSE}
1676	>	BytesWritten: DWORD;
1677	>	{$ENDIF}
1678	>	st: string;
1679	>	begin
1680	>	result := False;
1681	>	{$IFDEF UNIX}
1682	>	if FHandle <> -1 then
1683	>	{$ELSE}
1684	>	if FHandle <> 0 then
1685	>	{$ENDIF}
1686	>	begin
1687	>	st := '';
1688	>	for i := 0 to Columns.Count - 1 do
1689	>	begin
1690	>	if i > 0 then
1691	>	st := st + FColDelimiter;
1692	>	st := st + StripString(Columns[i].AsString, FColDelimiter + FRowDelimiter);
1693	>	end;
1694	>	st := st + FRowDelimiter;
1695	>	{$IFDEF UNIX}
1696	>	BytesWritten := FpWrite(FHandle,st[1],Length(st));
1697	>	{$ELSE}
1698	>	WriteFile(FHandle, st[1], Length(st), BytesWritten, nil);
1699	>	{$ENDIF}
1700	>	if BytesWritten = DWORD(Length(st)) then
1701	>	result := True;
1702	>	end
1703	>	end;
1704	>
1705	>	{ TIBInputDelimitedFile }
1706	>
1707	>	destructor TIBInputDelimitedFile.Destroy;
1708	>	begin
1709	>	FFile.Free;
1710	>	inherited Destroy;
1711	>	end;
1712	>
1713	>	function TIBInputDelimitedFile.GetColumn(var Col: string): Integer;
1714	>	var
1715	>	c: Char;
1716	>	BytesRead: Integer;
1717	>
1718	>	procedure ReadInput;
1719	>	begin
1720	>	if FLookAhead <> NULL_TERMINATOR then
1721	>	begin
1722	>	c := FLookAhead;
1723	>	BytesRead := 1;
1724	>	FLookAhead := NULL_TERMINATOR;
1725	>	end else
1726	>	BytesRead := FFile.Read(c, 1);
1727	>	end;
1728	>
1729	>	procedure CheckCRLF(Delimiter: string);
1730	>	begin
1731	>	if (c = CR) and (Pos(LF, Delimiter) > 0) then {mbcs ok}
1732	>	begin
1733	>	BytesRead := FFile.Read(c, 1);
1734	>	if (BytesRead = 1) and (c <> #10) then
1735	>	FLookAhead := c
1736	>	end;
1737	>	end;
1738	>
1739	>	begin
1740	>	Col := '';
1741	>	result := 0;
1742	>	ReadInput;
1743	>	while BytesRead <> 0 do begin
1744	>	if Pos(c, FColDelimiter) > 0 then {mbcs ok}
1745	>	begin
1746	>	CheckCRLF(FColDelimiter);
1747	>	result := 1;
1748	>	break;
1749	>	end else if Pos(c, FRowDelimiter) > 0 then {mbcs ok}
1750	>	begin
1751	>	CheckCRLF(FRowDelimiter);
1752	>	result := 2;
1753	>	break;
1754	>	end else
1755	>	Col := Col + c;
1756	>	ReadInput;
1757	>	end;
1758	>	end;
1759	>
1760	>	function TIBInputDelimitedFile.ReadParameters: Boolean;
1761	>	var
1762	>	i, curcol: Integer;
1763	>	Col: string;
1764	>	begin
1765	>	result := False;
1766	>	if not FEOF then begin
1767	>	curcol := 0;
1768	>	repeat
1769	>	i := GetColumn(Col);
1770	>	if (i = 0) then
1771	>	FEOF := True;
1772	>	if (curcol < Params.Count) then
1773	>	begin
1774	>	try
1775	>	if (Col = '') and
1776	>	(ReadBlanksAsNull) then
1777	>	Params[curcol].IsNull := True
1778	>	else
1779	>	Params[curcol].AsString := Col;
1780	>	Inc(curcol);
1781	>	except
1782	>	on E: Exception do begin
1783	>	if not (FEOF and (curcol = Params.Count)) then
1784	>	raise;
1785	>	end;
1786	>	end;
1787	>	end;
1788	>	until (FEOF) or (i = 2);
1789	>	result := ((FEOF) and (curcol = Params.Count)) or
1790	>	(not FEOF);
1791	>	end;
1792	>	end;
1793	>
1794	>	procedure TIBInputDelimitedFile.ReadyFile;
1795	>	begin
1796	>	if FColDelimiter = '' then
1797	>	FColDelimiter := TAB;
1798	>	if FRowDelimiter = '' then
1799	>	FRowDelimiter := CRLF;
1800	>	FLookAhead := NULL_TERMINATOR;
1801	>	FEOF := False;
1802	>	if FFile <> nil then
1803	>	FFile.Free;
1804	>	FFile := TFileStream.Create(FFilename, fmOpenRead or fmShareDenyWrite);
1805	>	if FSkipTitles then
1806	>	ReadParameters;
1807	>	end;
1808	>
1809	>	{ TIBOutputRawFile }
1810	>	destructor TIBOutputRawFile.Destroy;
1811	>	begin
1812	>	{$IFDEF UNIX}
1813	>	if FHandle <> -1 then
1814	>	fpclose(FHandle);
1815	>	{$ELSE}
1816	>	if FHandle <> 0 then
1817	>	begin
1818	>	FlushFileBuffers(FHandle);
1819	>	CloseHandle(FHandle);
1820	>	end;
1821	>	{$ENDIF}
1822	>	inherited Destroy;
1823	>	end;
1824	>
1825	>	procedure TIBOutputRawFile.ReadyFile;
1826	>	begin
1827	>	{$IFDEF UNIX}
1828	>	FHandle := FpOpen(Filename,O_WrOnly or O_Creat);
1829	>	{$ELSE}
1830	>	FHandle := CreateFile(PChar(Filename), GENERIC_WRITE, 0, nil, CREATE_ALWAYS,
1831	>	FILE_ATTRIBUTE_NORMAL, 0);
1832	>	if FHandle = INVALID_HANDLE_VALUE then
1833	>	FHandle := 0;
1834	>	{$ENDIF}
1835	>	end;
1836	>
1837	>	function TIBOutputRawFile.WriteColumns: Boolean;
1838	>	var
1839	>	i: Integer;
1840	>	BytesWritten: DWord;
1841	>	begin
1842	>	result := False;
1843	>	if FHandle <> 0 then
1844	>	begin
1845	>	for i := 0 to Columns.Count - 1 do
1846	>	begin
1847	>	{$IFDEF UNIX}
1848	>	BytesWritten := FpWrite(FHandle,Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen);
1849	>	{$ELSE}
1850	>	WriteFile(FHandle, Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen,
1851	>	BytesWritten, nil);
1852	>	{$ENDIF}
1853	>	if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
1854	>	exit;
1855	>	end;
1856	>	result := True;
1857	>	end;
1858	>	end;
1859	>
1860	>	{ TIBInputRawFile }
1861	>	destructor TIBInputRawFile.Destroy;
1862	>	begin
1863	>	{$IFDEF UNIX}
1864	>	if FHandle <> -1 then
1865	>	fpclose(FHandle);
1866	>	{$ELSE}
1867	>	if FHandle <> 0 then
1868	>	CloseHandle(FHandle);
1869	>	{$ENDIF}
1870	>	inherited Destroy;
1871	>	end;
1872	>
1873	>	function TIBInputRawFile.ReadParameters: Boolean;
1874	>	var
1875	>	i: Integer;
1876	>	BytesRead: DWord;
1877	>	begin
1878	>	result := False;
1879	>	{$IFDEF UNIX}
1880	>	if FHandle <> -1 then
1881	>	{$ELSE}
1882	>	if FHandle <> 0 then
1883	>	{$ENDIF}
1884	>	begin
1885	>	for i := 0 to Params.Count - 1 do
1886	>	begin
1887	>	{$IFDEF UNIX}
1888	>	BytesRead := FpRead(FHandle,Params[i].Data^.sqldata^,Params[i].Data^.sqllen);
1889	>	{$ELSE}
1890	>	ReadFile(FHandle, Params[i].Data^.sqldata^, Params[i].Data^.sqllen,
1891	>	BytesRead, nil);
1892	>	{$ENDIF}
1893	>	if BytesRead <> DWORD(Params[i].Data^.sqllen) then
1894	>	exit;
1895	>	end;
1896	>	result := True;
1897	>	end;
1898	>	end;
1899	>
1900	>	procedure TIBInputRawFile.ReadyFile;
1901	>	begin
1902	>	{$IFDEF UNIX}
1903	>	if FHandle <> -1 then
1904	>	fpclose(FHandle);
1905	>	FHandle := FpOpen(Filename,O_RdOnly);
1906	>	if FHandle = -1 then
1907	>	raise Exception.CreateFmt('Unable to open file %s',[Filename]);
1908	>	{$ELSE}
1909	>	if FHandle <> 0 then
1910	>	CloseHandle(FHandle);
1911	>	FHandle := CreateFile(PChar(Filename), GENERIC_READ, 0, nil, OPEN_EXISTING,
1912	>	FILE_FLAG_SEQUENTIAL_SCAN, 0);
1913	>	if FHandle = INVALID_HANDLE_VALUE then
1914	>	FHandle := 0;
1915	>	{$ENDIF}
1916	>	end;
1917	>
1918	>	{ TIBSQL }
1919	>	constructor TIBSQL.Create(AOwner: TComponent);
1920	>	begin
1921	>	inherited Create(AOwner);
1922	>	FIBLoaded := False;
1923	>	CheckIBLoaded;
1924	>	FIBLoaded := True;
1925	>	FGenerateParamNames := False;
1926	>	FGoToFirstRecordOnExecute := True;
1927	>	FBase := TIBBase.Create(Self);
1928	>	FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
1929	>	FBase.BeforeTransactionEnd := BeforeTransactionEnd;
1930	>	FBOF := False;
1931	>	FEOF := False;
1932	>	FPrepared := False;
1933	>	FRecordCount := 0;
1934	>	FSQL := TStringList.Create;
1935	>	TStringList(FSQL).OnChanging := SQLChanging;
1936	>	FProcessedSQL := TStringList.Create;
1937	>	FHandle := nil;
1938	>	FSQLParams := TIBXSQLDA.Create(self);
1939	>	FSQLRecord := TIBXSQLDA.Create(self);
1940	>	FSQLType := SQLUnknown;
1941	>	FParamCheck := True;
1942	>	FCursor := Name + RandomString(8);
1943	>	if AOwner is TIBDatabase then
1944	>	Database := TIBDatabase(AOwner)
1945	>	else
1946	>	if AOwner is TIBTransaction then
1947	>	Transaction := TIBTransaction(AOwner);
1948	>	end;
1949	>
1950	>	destructor TIBSQL.Destroy;
1951	>	begin
1952	>	if FIBLoaded then
1953	>	begin
1954	>	if (FOpen) then
1955	>	Close;
1956	>	if (FHandle <> nil) then
1957	>	FreeHandle;
1958	>	FSQL.Free;
1959	>	FProcessedSQL.Free;
1960	>	FBase.Free;
1961	>	FSQLParams.Free;
1962	>	FSQLRecord.Free;
1963	>	end;
1964	>	inherited Destroy;
1965	>	end;
1966	>
1967	>	procedure TIBSQL.BatchInput(InputObject: TIBBatchInput);
1968	>	begin
1969	>	if not Prepared then
1970	>	Prepare;
1971	>	InputObject.FParams := Self.FSQLParams;
1972	>	InputObject.ReadyFile;
1973	>	if FSQLType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
1974	>	while InputObject.ReadParameters do
1975	>	ExecQuery;
1976	>	end;
1977	>
1978	>	procedure TIBSQL.BatchOutput(OutputObject: TIBBatchOutput);
1979	>	begin
1980	>	CheckClosed;
1981	>	if not Prepared then
1982	>	Prepare;
1983	>	if FSQLType = SQLSelect then begin
1984	>	try
1985	>	ExecQuery;
1986	>	OutputObject.FColumns := Self.FSQLRecord;
1987	>	OutputObject.ReadyFile;
1988	>	if not FGoToFirstRecordOnExecute then
1989	>	Next;
1990	>	while (not Eof) and (OutputObject.WriteColumns) do
1991	>	Next;
1992	>	finally
1993	>	Close;
1994	>	end;
1995	>	end;
1996	>	end;
1997	>
1998	>	procedure TIBSQL.CheckClosed;
1999	>	begin
2000	>	if FOpen then IBError(ibxeSQLOpen, [nil]);
2001	>	end;
2002	>
2003	>	procedure TIBSQL.CheckOpen;
2004	>	begin
2005	>	if not FOpen then IBError(ibxeSQLClosed, [nil]);
2006	>	end;
2007	>
2008	>	procedure TIBSQL.CheckValidStatement;
2009	>	begin
2010	>	FBase.CheckTransaction;
2011	>	if (FHandle = nil) then
2012	>	IBError(ibxeInvalidStatementHandle, [nil]);
2013	>	end;
2014	>
2015	>	procedure TIBSQL.Close;
2016	>	var
2017	>	isc_res: ISC_STATUS;
2018	>	begin
2019	>	try
2020	>	if (FHandle <> nil) and (SQLType = SQLSelect) and FOpen then begin
2021	>	isc_res := Call(
2022	>	isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
2023	>	False);
2024	>	if (StatusVector^ = 1) and (isc_res > 0) and
2025	>	not CheckStatusVector(
2026	>	[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
2027	>	IBDatabaseError;
2028	>	end;
2029	>	finally
2030	>	FEOF := False;
2031	>	FBOF := False;
2032	>	FOpen := False;
2033	>	FRecordCount := 0;
2034	>	end;
2035	>	end;
2036	>
2037	>	function TIBSQL.Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
2038	>	begin
2039	>	result := 0;
2040	>	if Transaction <> nil then
2041	>	result := Transaction.Call(ErrCode, RaiseError)
2042	>	else
2043	>	if RaiseError and (ErrCode > 0) then
2044	>	IBDataBaseError;
2045	>	end;
2046	>
2047	>	function TIBSQL.Current: TIBXSQLDA;
2048	>	begin
2049	>	result := FSQLRecord;
2050	>	end;
2051	>
2052	>	function TIBSQL.GetFieldCount: integer;
2053	>	begin
2054	>	Result := FSQLRecord.Count
2055	>	end;
2056	>
2057	>	procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
2058	>	begin
2059	>	if (FHandle <> nil) then begin
2060	>	Close;
2061	>	FreeHandle;
2062	>	end;
2063	>	end;
2064	>
2065	>	procedure TIBSQL.ExecQuery;
2066	>	var
2067	>	fetch_res: ISC_STATUS;
2068	>	begin
2069	>	CheckClosed;
2070	>	if not Prepared then Prepare;
2071	>	CheckValidStatement;
2072	>	case FSQLType of
2073	>	SQLSelect: begin
2074	>	Call(isc_dsql_execute2(StatusVector,
2075	>	TRHandle,
2076	>	@FHandle,
2077	>	Database.SQLDialect,
2078	>	FSQLParams.AsXSQLDA,
2079	>	nil), True);
2080	>	Call(
2081	>	isc_dsql_set_cursor_name(StatusVector, @FHandle, PChar(FCursor), 0),
2082	>	True);
2083	>	FOpen := True;
2084	>	FBOF := True;
2085	>	FEOF := False;
2086	>	FRecordCount := 0;
2087	>	if FGoToFirstRecordOnExecute then
2088	>	Next;
2089	>	end;
2090	>	SQLExecProcedure: begin
2091	>	fetch_res := Call(isc_dsql_execute2(StatusVector,
2092	>	TRHandle,
2093	>	@FHandle,
2094	>	Database.SQLDialect,
2095	>	FSQLParams.AsXSQLDA,
2096	>	FSQLRecord.AsXSQLDA), False);
2097	>	if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
2098	>	begin
2099	>	{ Sometimes a prepared stored procedure appears to get
2100	>	off sync on the server ....This code is meant to try
2101	>	to work around the problem simply by "retrying". This
2102	>	need to be reproduced and fixed.
2103	>	}
2104	>	isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2105	>	PChar(FProcessedSQL.Text), 1, nil);
2106	>	Call(isc_dsql_execute2(StatusVector,
2107	>	TRHandle,
2108	>	@FHandle,
2109	>	Database.SQLDialect,
2110	>	FSQLParams.AsXSQLDA,
2111	>	FSQLRecord.AsXSQLDA), True);
2112	>	end;
2113	>	end
2114	>	else
2115	>	Call(isc_dsql_execute(StatusVector,
2116	>	TRHandle,
2117	>	@FHandle,
2118	>	Database.SQLDialect,
2119	>	FSQLParams.AsXSQLDA), True)
2120	>	end;
2121	>	if not (csDesigning in ComponentState) then
2122	>	MonitorHook.SQLExecute(Self);
2123	>	end;
2124	>
2125	>	function TIBSQL.GetEOF: Boolean;
2126	>	begin
2127	>	result := FEOF or not FOpen;
2128	>	end;
2129	>
2130	>	function TIBSQL.FieldByName(FieldName: String): TIBXSQLVAR;
2131	>	var
2132	>	i: Integer;
2133	>	begin
2134	>	i := GetFieldIndex(FieldName);
2135	>	if (i < 0) then
2136	>	IBError(ibxeFieldNotFound, [FieldName]);
2137	>	result := GetFields(i);
2138	>	end;
2139	>
2140	>	function TIBSQL.ParamByName(ParamName: String): TIBXSQLVAR;
2141	>	begin
2142	>	Result := Params.ByName(ParamName);
2143	>	end;
2144	>
2145	>	function TIBSQL.GetFields(const Idx: Integer): TIBXSQLVAR;
2146	>	begin
2147	>	if (Idx < 0) or (Idx >= FSQLRecord.Count) then
2148	>	IBError(ibxeFieldNotFound, [IntToStr(Idx)]);
2149	>	result := FSQLRecord[Idx];
2150	>	end;
2151	>
2152	>	function TIBSQL.GetFieldIndex(FieldName: String): Integer;
2153	>	begin
2154	>	if (FSQLRecord.GetXSQLVarByName(FieldName) = nil) then
2155	>	result := -1
2156	>	else
2157	>	result := FSQLRecord.GetXSQLVarByName(FieldName).Index;
2158	>	end;
2159	>
2160	>	function TIBSQL.Next: TIBXSQLDA;
2161	>	var
2162	>	fetch_res: ISC_STATUS;
2163	>	begin
2164	>	result := nil;
2165	>	if not FEOF then begin
2166	>	CheckOpen;
2167	>	{ Go to the next record... }
2168	>	fetch_res :=
2169	>	Call(isc_dsql_fetch(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.AsXSQLDA), False);
2170	>	if (fetch_res = 100) or (CheckStatusVector([isc_dsql_cursor_err])) then begin
2171	>	FEOF := True;
2172	>	end else if (fetch_res > 0) then begin
2173	>	try
2174	>	IBDataBaseError;
2175	>	except
2176	>	Close;
2177	>	raise;
2178	>	end;
2179	>	end else begin
2180	>	Inc(FRecordCount);
2181	>	FBOF := False;
2182	>	result := FSQLRecord;
2183	>	end;
2184	>	if not (csDesigning in ComponentState) then
2185	>	MonitorHook.SQLFetch(Self);
2186	>	end;
2187	>	end;
2188	>
2189	>	procedure TIBSQL.FreeHandle;
2190	>	var
2191	>	isc_res: ISC_STATUS;
2192	>	begin
2193	>	try
2194	>	{ The following two lines merely set the SQLDA count
2195	>	variable FCount to 0, but do not deallocate
2196	>	That way the allocations can be reused for
2197	>	a new query sring in the same SQL instance }
2198	>	FSQLRecord.Count := 0;
2199	>	FSQLParams.Count := 0;
2200	>	if FHandle <> nil then begin
2201	>	isc_res :=
2202	>	Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
2203	>	if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
2204	>	IBDataBaseError;
2205	>	end;
2206	>	finally
2207	>	FPrepared := False;
2208	>	FHandle := nil;
2209	>	end;
2210	>	end;
2211	>
2212	>	function TIBSQL.GetDatabase: TIBDatabase;
2213	>	begin
2214	>	result := FBase.Database;
2215	>	end;
2216	>
2217	>	function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
2218	>	begin
2219	>	result := FBase.DBHandle;
2220	>	end;
2221	>
2222	>	function TIBSQL.GetPlan: String;
2223	>	var
2224	>	result_buffer: array[0..16384] of Char;
2225	>	result_length, i: Integer;
2226	>	info_request: Char;
2227	>	begin
2228	>	if (not Prepared) or
2229	>	(not (FSQLType in [SQLSelect, SQLSelectForUpdate,
2230	>	{TODO: SQLExecProcedure, }
2231	>	SQLUpdate, SQLDelete])) then
2232	>	result := ''
2233	>	else begin
2234	>	info_request := Char(isc_info_sql_get_plan);
2235	>	Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
2236	>	SizeOf(result_buffer), result_buffer), True);
2237	>	if (result_buffer[0] <> Char(isc_info_sql_get_plan)) then
2238	>	IBError(ibxeUnknownError, [nil]);
2239	>	result_length := isc_vax_integer(@result_buffer[1], 2);
2240	>	SetString(result, nil, result_length);
2241	>	for i := 1 to result_length do
2242	>	result[i] := result_buffer[i + 2];
2243	>	result := Trim(result);
2244	>	end;
2245	>	end;
2246	>
2247	>	function TIBSQL.GetRecordCount: Integer;
2248	>	begin
2249	>	result := FRecordCount;
2250	>	end;
2251	>
2252	>	function TIBSQL.GetRowsAffected: integer;
2253	>	var
2254	>	result_buffer: array[0..1048] of Char;
2255	>	info_request: Char;
2256	>	begin
2257	>	if not Prepared then
2258	>	result := -1
2259	>	else begin
2260	>	info_request := Char(isc_info_sql_records);
2261	>	if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
2262	>	SizeOf(result_buffer), result_buffer) > 0 then
2263	>	IBDatabaseError;
2264	>	if (result_buffer[0] <> Char(isc_info_sql_records)) then
2265	>	result := -1
2266	>	else
2267	>	case SQLType of
2268	>	SQLUpdate:   Result := isc_vax_integer(@result_buffer[6], 4);
2269	>	SQLDelete:   Result := isc_vax_integer(@result_buffer[13], 4);
2270	>	SQLInsert:   Result := isc_vax_integer(@result_buffer[27], 4);
2271	>	else         Result := -1 ;
2272	>	end ;
2273	>	end;
2274	>	end;
2275	>
2276	>	function TIBSQL.GetSQLParams: TIBXSQLDA;
2277	>	begin
2278	>	if not Prepared then
2279	>	Prepare;
2280	>	result := FSQLParams;
2281	>	end;
2282	>
2283	>	function TIBSQL.GetTransaction: TIBTransaction;
2284	>	begin
2285	>	result := FBase.Transaction;
2286	>	end;
2287	>
2288	>	function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
2289	>	begin
2290	>	result := FBase.TRHandle;
2291	>	end;
2292	>
2293	>	{
2294	>	Preprocess SQL
2295	>	Using FSQL, process the typed SQL and put the process SQL
2296	>	in FProcessedSQL and parameter names in FSQLParams
2297	>	}
2298	>	procedure TIBSQL.PreprocessSQL;
2299	>	var
2300	>	cCurChar, cNextChar, cQuoteChar: Char;
2301	>	sSQL, sProcessedSQL, sParamName: String;
2302	>	i, iLenSQL, iSQLPos: Integer;
2303	>	iCurState, iCurParamState: Integer;
2304	>	iParamSuffix: Integer;
2305	>	slNames: TStrings;
2306	>
2307	>	const
2308	>	DefaultState = 0;
2309	>	CommentState = 1;
2310	>	QuoteState = 2;
2311	>	ParamState = 3;
2312	>	ParamDefaultState = 0;
2313	>	ParamQuoteState = 1;
2314	>
2315	>	procedure AddToProcessedSQL(cChar: Char);
2316	>	begin
2317	>	sProcessedSQL[iSQLPos] := cChar;
2318	>	Inc(iSQLPos);
2319	>	end;
2320	>
2321	>	begin
2322	>	slNames := TStringList.Create;
2323	>	try
2324	>	{ Do some initializations of variables }
2325	>	iParamSuffix := 0;
2326	>	cQuoteChar := '''';
2327	>	sSQL := FSQL.Text;
2328	>	iLenSQL := Length(sSQL);
2329	>	SetString(sProcessedSQL, nil, iLenSQL + 1);
2330	>	i := 1;
2331	>	iSQLPos := 1;
2332	>	iCurState := DefaultState;
2333	>	iCurParamState := ParamDefaultState;
2334	>	{ Now, traverse through the SQL string, character by character,
2335	>	picking out the parameters and formatting correctly for InterBase }
2336	>	while (i <= iLenSQL) do begin
2337	>	{ Get the current token and a look-ahead }
2338	>	cCurChar := sSQL[i];
2339	>	if i = iLenSQL then
2340	>	cNextChar := #0
2341	>	else
2342	>	cNextChar := sSQL[i + 1];
2343	>	{ Now act based on the current state }
2344	>	case iCurState of
2345	>	DefaultState: begin
2346	>	case cCurChar of
2347	>	'''', '"': begin
2348	>	cQuoteChar := cCurChar;
2349	>	iCurState := QuoteState;
2350	>	end;
2351	>	'?', ':': begin
2352	>	iCurState := ParamState;
2353	>	AddToProcessedSQL('?');
2354	>	end;
2355	>	'/': if (cNextChar = '*') then begin
2356	>	AddToProcessedSQL(cCurChar);
2357	>	Inc(i);
2358	>	iCurState := CommentState;
2359	>	end;
2360	>	end;
2361	>	end;
2362	>	CommentState: begin
2363	>	if (cNextChar = #0) then
2364	>	IBError(ibxeSQLParseError, [SEOFInComment])
2365	>	else if (cCurChar = '*') then begin
2366	>	if (cNextChar = '/') then
2367	>	iCurState := DefaultState;
2368	>	end;
2369	>	end;
2370	>	QuoteState: begin
2371	>	if cNextChar = #0 then
2372	>	IBError(ibxeSQLParseError, [SEOFInString])
2373	>	else if (cCurChar = cQuoteChar) then begin
2374	>	if (cNextChar = cQuoteChar) then begin
2375	>	AddToProcessedSQL(cCurChar);
2376	>	Inc(i);
2377	>	end else
2378	>	iCurState := DefaultState;
2379	>	end;
2380	>	end;
2381	>	ParamState:
2382	>	begin
2383	>	{ collect the name of the parameter }
2384	>	if iCurParamState = ParamDefaultState then
2385	>	begin
2386	>	if cCurChar = '"' then
2387	>	iCurParamState := ParamQuoteState
2388	>	else if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
2389	>	sParamName := sParamName + cCurChar
2390	>	else if FGenerateParamNames then
2391	>	begin
2392	>	sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
2393	>	Inc(iParamSuffix);
2394	>	iCurState := DefaultState;
2395	>	slNames.Add(sParamName);
2396	>	sParamName := '';
2397	>	end
2398	>	else
2399	>	IBError(ibxeSQLParseError, [SParamNameExpected]);
2400	>	end
2401	>	else begin
2402	>	{ determine if Quoted parameter name is finished }
2403	>	if cCurChar = '"' then
2404	>	begin
2405	>	Inc(i);
2406	>	slNames.Add(sParamName);
2407	>	SParamName := '';
2408	>	iCurParamState := ParamDefaultState;
2409	>	iCurState := DefaultState;
2410	>	end
2411	>	else
2412	>	sParamName := sParamName + cCurChar
2413	>	end;
2414	>	{ determine if the unquoted parameter name is finished }
2415	>	if (iCurParamState <> ParamQuoteState) and
2416	>	(iCurState <> DefaultState) then
2417	>	begin
2418	>	if not (cNextChar in ['A'..'Z', 'a'..'z',
2419	>	'0'..'9', '_', '$']) then begin
2420	>	Inc(i);
2421	>	iCurState := DefaultState;
2422	>	slNames.Add(sParamName);
2423	>	sParamName := '';
2424	>	end;
2425	>	end;
2426	>	end;
2427	>	end;
2428	>	if iCurState <> ParamState then
2429	>	AddToProcessedSQL(sSQL[i]);
2430	>	Inc(i);
2431	>	end;
2432	>	AddToProcessedSQL(#0);
2433	>	FSQLParams.Count := slNames.Count;
2434	>	for i := 0 to slNames.Count - 1 do
2435	>	FSQLParams.AddName(slNames[i], i);
2436	>	FProcessedSQL.Text := sProcessedSQL;
2437	>	finally
2438	>	slNames.Free;
2439	>	end;
2440	>	end;
2441	>
2442	>	procedure TIBSQL.SetDatabase(Value: TIBDatabase);
2443	>	begin
2444	>	FBase.Database := Value;
2445	>	end;
2446	>
2447	>	procedure TIBSQL.Prepare;
2448	>	var
2449	>	stmt_len: Integer;
2450	>	res_buffer: array[0..7] of Char;
2451	>	type_item: Char;
2452	>	begin
2453	>	CheckClosed;
2454	>	FBase.CheckDatabase;
2455	>	FBase.CheckTransaction;
2456	>	if FPrepared then
2457	>	exit;
2458	>	if (FSQL.Text = '') then
2459	>	IBError(ibxeEmptyQuery, [nil]);
2460	>	if not ParamCheck then
2461	>	FProcessedSQL.Text := FSQL.Text
2462	>	else
2463	>	PreprocessSQL;
2464	>	if (FProcessedSQL.Text = '') then
2465	>	IBError(ibxeEmptyQuery, [nil]);
2466	>	try
2467	>	Call(isc_dsql_alloc_statement2(StatusVector, DBHandle,
2468	>	@FHandle), True);
2469	>	Call(isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2470	>	PChar(FProcessedSQL.Text), Database.SQLDialect, nil), True);
2471	>	{ After preparing the statement, query the stmt type and possibly
2472	>	create a FSQLRecord "holder" }
2473	>	{ Get the type of the statement }
2474	>	type_item := Char(isc_info_sql_stmt_type);
2475	>	Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
2476	>	SizeOf(res_buffer), res_buffer), True);
2477	>	if (res_buffer[0] <> Char(isc_info_sql_stmt_type)) then
2478	>	IBError(ibxeUnknownError, [nil]);
2479	>	stmt_len := isc_vax_integer(@res_buffer[1], 2);
2480	>	FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
2481	>	{ Done getting the type }
2482	>	case FSQLType of
2483	>	SQLGetSegment,
2484	>	SQLPutSegment,
2485	>	SQLStartTransaction: begin
2486	>	FreeHandle;
2487	>	IBError(ibxeNotPermitted, [nil]);
2488	>	end;
2489	>	SQLCommit,
2490	>	SQLRollback,
2491	>	SQLDDL, SQLSetGenerator,
2492	>	SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
2493	>	SQLExecProcedure: begin
2494	>	{ We already know how many inputs there are, so... }
2495	>	if (FSQLParams.FXSQLDA <> nil) and
2496	>	(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
2497	>	FSQLParams.FXSQLDA), False) > 0) then
2498	>	IBDataBaseError;
2499	>	FSQLParams.Initialize;
2500	>	if FSQLType in [SQLSelect, SQLSelectForUpdate,
2501	>	SQLExecProcedure] then begin
2502	>	{ Allocate an initial output descriptor (with one column) }
2503	>	FSQLRecord.Count := 1;
2504	>	{ Using isc_dsql_describe, get the right size for the columns... }
2505	>	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2506	>	if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
2507	>	FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
2508	>	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2509	>	end else if FSQLRecord.FXSQLDA^.sqld = 0 then
2510	>	FSQLRecord.Count := 0;
2511	>	FSQLRecord.Initialize;
2512	>	end;
2513	>	end;
2514	>	end;
2515	>	FPrepared := True;
2516	>	if not (csDesigning in ComponentState) then
2517	>	MonitorHook.SQLPrepare(Self);
2518	>	except
2519	>	on E: Exception do begin
2520	>	if (FHandle <> nil) then
2521	>	FreeHandle;
2522	>	raise;
2523	>	end;
2524	>	end;
2525	>	end;
2526	>
2527	>	function TIBSQL.GetUniqueRelationName: String;
2528	>	begin
2529	>	if FPrepared and (FSQLType = SQLSelect) then
2530	>	result := FSQLRecord.UniqueRelationName
2531	>	else
2532	>	result := '';
2533	>	end;
2534	>
2535	>	procedure TIBSQL.SetSQL(Value: TStrings);
2536	>	begin
2537	>	if FSQL.Text <> Value.Text then
2538	>	begin
2539	>	FSQL.BeginUpdate;
2540	>	try
2541	>	FSQL.Assign(Value);
2542	>	finally
2543	>	FSQL.EndUpdate;
2544	>	end;
2545	>	end;
2546	>	end;
2547	>
2548	>	procedure TIBSQL.SetTransaction(Value: TIBTransaction);
2549	>	begin
2550	>	FBase.Transaction := Value;
2551	>	end;
2552	>
2553	>	procedure TIBSQL.SQLChanging(Sender: TObject);
2554	>	begin
2555	>	if Assigned(OnSQLChanging) then
2556	>	OnSQLChanging(Self);
2557	>	if FHandle <> nil then FreeHandle;
2558	>	end;
2559	>
2560	>	procedure TIBSQL.BeforeTransactionEnd(Sender: TObject);
2561	>	begin
2562	>	if (FOpen) then
2563	>	Close;
2564	>	end;
2565	>
2566	>	end.

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