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

Comparing ibx/trunk/runtime/IBSQL.pas (file contents):
Revision 21 by tony, Thu Feb 26 10:33:34 2015 UTC vs.
Revision 80 by tony, Mon Jan 1 11:31:07 2018 UTC

#	Line 35 | Line 35 | unit IBSQL;
35
36		{$Mode Delphi}
37
38	<	{ IBSQL param names in dialect 3 quoted format (e.g. :"MyParam") are by default disabled.
38	>	{$codepage UTF8}
39
40	<	Dialect 3 quoted format parameter names represent a significant overhead and are of
41	<	limited value - especially for users that use only TIBSQL or TIBCustomDataset
42	<	descendents. They were previously used internally by IBX to simplify SQL generation
43	<	for TTable components in Master/Slave relationships which are linked by
44	<	Dialect 3 names. They were also generated by TStoredProc when the original
45	<	parameter names are quoted.
46	<
47	<	However, for some users they do cause a big processing overhead. The TTable/TStoredProc
48	<	code has been re-written so that they are no required by IBX internally.
49	<	The code to support quoted parameter names is now subject  to conditional compilation.
50	<	To enable support, ALLOWDIALECT3PARAMNAMES should be defined when IBX is compiled.
51	<
52	<	Hint: deleting the space between the brace and the dollar sign below
53	<
54	<	}
55	<
56	<	{ $define ALLOWDIALECT3PARAMNAMES}
57	<
58	<	{$ifndef ALLOWDIALECT3PARAMNAMES}
59	<
60	<	{ Even when dialect 3 quoted format parameter names are not supported, IBX still processes
61	<	parameter names case insensitive. This does result in some additional overhead
62	<	due to a call to "AnsiUpperCase". This can be avoided by undefining
63	<	"UseCaseSensitiveParamName" below.
64	<
65	<	Note: do not define "UseCaseSensitiveParamName" when "ALLOWDIALECT3PARAMNAMES"
66	<	is defined. This will not give a useful result.
67	<	}
68	<	{$define UseCaseSensitiveParamName}
69	<	{$endif}
40	>	(* Define IBXQUERYSTATS to write to stdout a summary of query execution
41	>	statistics each time a query is executed
42	>
43	>	Define IBXQUERYTIME to write to stdout The local execution time for each
44	>	query
45	>	*)
46	>
47	>	{ $DEFINE IBXQUERYSTATS}
48	>	{ $DEFINE IBXQUERYTIME}
49
50		interface
51
#	Line 76 | Line 55 | uses
55		{$ELSE}
56		baseunix, unix,
57		{$ENDIF}
58	<	SysUtils, Classes, Forms, Controls, IBHeader,
80	<	IBErrorCodes, IBExternals, DB, IB, IBDatabase, IBUtils, IBXConst;
81	<
82	<	const
83	<	sSQLErrorSeparator = ' When Executing: ';
58	>	SysUtils, Classes, IBExternals, IB, IBDatabase, IBUtils;
59
60		type
86	–	TIBSQL = class;
87	–	TIBXSQLDA = class;
88	–
89	–	{ TIBXSQLVAR }
90	–	TIBXSQLVAR = class(TObject)
91	–	private
92	–	FParent: TIBXSQLDA;
93	–	FSQL: TIBSQL;
94	–	FIndex: Integer;
95	–	FModified: Boolean;
96	–	FName: String;
97	–	FUniqueName: boolean;
98	–	FXSQLVAR: PXSQLVAR;       { Point to the PXSQLVAR in the owner object }
99	–
100	–	function AdjustScale(Value: Int64; Scale: Integer): Double;
101	–	function AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
102	–	function AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
103	–	function GetAsCurrency: Currency;
104	–	function GetAsInt64: Int64;
105	–	function GetAsDateTime: TDateTime;
106	–	function GetAsDouble: Double;
107	–	function GetAsFloat: Float;
108	–	function GetAsLong: Long;
109	–	function GetAsPointer: Pointer;
110	–	function GetAsQuad: TISC_QUAD;
111	–	function GetAsShort: Short;
112	–	function GetAsString: String;
113	–	function GetAsVariant: Variant;
114	–	function GetAsXSQLVAR: PXSQLVAR;
115	–	function GetIsNull: Boolean;
116	–	function GetIsNullable: Boolean;
117	–	function GetSize: Integer;
118	–	function GetSQLType: Integer;
119	–	procedure SetAsCurrency(Value: Currency);
120	–	procedure SetAsInt64(Value: Int64);
121	–	procedure SetAsDate(Value: TDateTime);
122	–	procedure SetAsTime(Value: TDateTime);
123	–	procedure SetAsDateTime(Value: TDateTime);
124	–	procedure SetAsDouble(Value: Double);
125	–	procedure SetAsFloat(Value: Float);
126	–	procedure SetAsLong(Value: Long);
127	–	procedure SetAsPointer(Value: Pointer);
128	–	procedure SetAsQuad(Value: TISC_QUAD);
129	–	procedure SetAsShort(Value: Short);
130	–	procedure SetAsString(Value: String);
131	–	procedure SetAsVariant(Value: Variant);
132	–	procedure SetAsXSQLVAR(Value: PXSQLVAR);
133	–	procedure SetIsNull(Value: Boolean);
134	–	procedure SetIsNullable(Value: Boolean);
135	–	procedure xSetAsCurrency(Value: Currency);
136	–	procedure xSetAsInt64(Value: Int64);
137	–	procedure xSetAsDate(Value: TDateTime);
138	–	procedure xSetAsTime(Value: TDateTime);
139	–	procedure xSetAsDateTime(Value: TDateTime);
140	–	procedure xSetAsDouble(Value: Double);
141	–	procedure xSetAsFloat(Value: Float);
142	–	procedure xSetAsLong(Value: Long);
143	–	procedure xSetAsPointer(Value: Pointer);
144	–	procedure xSetAsQuad(Value: TISC_QUAD);
145	–	procedure xSetAsShort(Value: Short);
146	–	procedure xSetAsString(Value: String);
147	–	procedure xSetAsVariant(Value: Variant);
148	–	procedure xSetAsXSQLVAR(Value: PXSQLVAR);
149	–	procedure xSetIsNull(Value: Boolean);
150	–	procedure xSetIsNullable(Value: Boolean);
151	–	public
152	–	constructor Create(Parent: TIBXSQLDA; Query: TIBSQL);
153	–	procedure Assign(Source: TIBXSQLVAR);
154	–	procedure Clear;
155	–	procedure LoadFromFile(const FileName: String);
156	–	procedure LoadFromStream(Stream: TStream);
157	–	procedure SaveToFile(const FileName: String);
158	–	procedure SaveToStream(Stream: TStream);
159	–	property AsDate: TDateTime read GetAsDateTime write SetAsDate;
160	–	property AsTime: TDateTime read GetAsDateTime write SetAsTime;
161	–	property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
162	–	property AsDouble: Double read GetAsDouble write SetAsDouble;
163	–	property AsFloat: Float read GetAsFloat write SetAsFloat;
164	–	property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
165	–	property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
166	–	property AsInteger: Integer read GetAsLong write SetAsLong;
167	–	property AsLong: Long read GetAsLong write SetAsLong;
168	–	property AsPointer: Pointer read GetAsPointer write SetAsPointer;
169	–	property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
170	–	property AsShort: Short read GetAsShort write SetAsShort;
171	–	property AsString: String read GetAsString write SetAsString;
172	–	property AsVariant: Variant read GetAsVariant write SetAsVariant;
173	–	property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
174	–	property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
175	–	property IsNull: Boolean read GetIsNull write SetIsNull;
176	–	property IsNullable: Boolean read GetIsNullable write SetIsNullable;
177	–	property Index: Integer read FIndex;
178	–	property Modified: Boolean read FModified write FModified;
179	–	property Name: String read FName;
180	–	property Size: Integer read GetSize;
181	–	property SQLType: Integer read GetSQLType;
182	–	property Value: Variant read GetAsVariant write SetAsVariant;
183	–	end;
184	–
185	–	TIBXSQLVARArray = Array of TIBXSQLVAR;
186	–
187	–	TIBXSQLDAType = (daInput,daOutput);
188	–
189	–	{ TIBXSQLDA }
190	–
191	–	TIBXSQLDA = class(TObject)
192	–	protected
193	–	FSQL: TIBSQL;
194	–	FCount: Integer;
195	–	FSize: Integer;
196	–	FInputSQLDA: boolean;
197	–	FXSQLDA: PXSQLDA;
198	–	FXSQLVARs: TIBXSQLVARArray; { array of IBXQLVARs }
199	–	FUniqueRelationName: String;
200	–	function GetModified: Boolean;
201	–	function GetRecordSize: Integer;
202	–	function GetXSQLDA: PXSQLDA;
203	–	function GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
204	–	function GetXSQLVARByName(Idx: String): TIBXSQLVAR;
205	–	procedure Initialize;
206	–	procedure SetCount(Value: Integer);
207	–	public
208	–	constructor Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
209	–	destructor Destroy; override;
210	–	procedure SetParamName(FieldName: String; Idx: Integer; UniqueName: boolean = false);
211	–	function ByName(Idx: String): TIBXSQLVAR;
212	–	property AsXSQLDA: PXSQLDA read GetXSQLDA;
213	–	property Count: Integer read FCount write SetCount;
214	–	property Modified: Boolean read GetModified;
215	–	property RecordSize: Integer read GetRecordSize;
216	–	property Vars[Idx: Integer]: TIBXSQLVAR read GetXSQLVAR; default;
217	–	property UniqueRelationName: String read FUniqueRelationName;
218	–	end;
219	–
61		{ TIBBatch }
62
63		TIBBatch = class(TObject)
64		protected
65		FFilename: String;
66	<	FColumns: TIBXSQLDA;
67	<	FParams: TIBXSQLDA;
66	>	FColumns: IResults;
67	>	FParams: ISQLParams;
68		public
69		procedure ReadyFile; virtual; abstract;
70	<	property Columns: TIBXSQLDA read FColumns;
70	>	property Columns: IResults read FColumns;
71		property Filename: String read FFilename write FFilename;
72	<	property Params: TIBXSQLDA read FParams;
72	>	property Params: ISQLParams read FParams;
73		end;
74
75		TIBBatchInput = class(TIBBatch)
#	Line 314 | Line 155 | type
155		end;
156
157		{ TIBSQL }
317	–	TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
318	–	SQLUpdate, SQLDelete, SQLDDL,
319	–	SQLGetSegment, SQLPutSegment,
320	–	SQLExecProcedure, SQLStartTransaction,
321	–	SQLCommit, SQLRollback,
322	–	SQLSelectForUpdate, SQLSetGenerator);
158
159		TIBSQL = class(TComponent)
160		private
161	<	FIBLoaded: Boolean;
161	>	FMetaData: IMetaData;
162	>	FSQLParams: ISQLParams;
163	>	FStatement: IStatement;
164	>	FOnSQLChanged: TNotifyEvent;
165		FUniqueParamNames: Boolean;
166	+	FBOF: boolean;
167	+	FEOF: boolean;
168		function GetFieldCount: integer;
169	+	function GetOpen: Boolean;
170	+	function GetPrepared: Boolean;
171	+	function GetSQLStatementType: TIBSQLStatementTypes;
172		procedure SetUniqueParamNames(AValue: Boolean);
173		protected
174		FBase: TIBBase;
175	<	FBOF,                          { At BOF? }
333	<	FEOF,                          { At EOF? }
334	<	FGoToFirstRecordOnExecute,     { Automatically position record on first record after executing }
335	<	FOpen,                         { Is a cursor open? }
336	<	FPrepared: Boolean;            { Has the query been prepared? }
175	>	FGoToFirstRecordOnExecute: boolean;     { Automatically position record on first record after executing }
176		FRecordCount: Integer;         { How many records have been read so far? }
338	–	FCursor: String;               { Cursor name...}
339	–	FHandle: TISC_STMT_HANDLE;     { Once prepared, this accesses the SQL Query }
177		FOnSQLChanging: TNotifyEvent;  { Call this when the SQL is changing }
178		FSQL: TStrings;                { SQL Query (by user) }
179		FParamCheck: Boolean;          { Check for parameters? (just like TQuery) }
180	<	FProcessedSQL: TStrings;       { SQL Query (pre-processed for param labels) }
181	<	FSQLParams,                    { Any parameters to the query }
345	<	FSQLRecord: TIBXSQLDA;         { The current record }
346	<	FSQLType: TIBSQLTypes;         { Select, update, delete, insert, create, alter, etc...}
180	>	FResults: IResults;            {Single row results from exec}
181	>	FResultSet: IResultSet;        {Multi-row results from open cursor}
182		FGenerateParamNames: Boolean;  { Auto generate param names ?}
183		procedure DoBeforeDatabaseDisconnect(Sender: TObject);
184		function GetDatabase: TIBDatabase;
350	–	function GetDBHandle: PISC_DB_HANDLE;
185		function GetEOF: Boolean;
186	<	function GetFields(const Idx: Integer): TIBXSQLVAR;
186	>	function GetFields(const Idx: Integer): ISQLData;
187		function GetFieldIndex(FieldName: String): Integer;
188		function GetPlan: String;
189		function GetRecordCount: Integer;
190		function GetRowsAffected: Integer;
191	<	function GetSQLParams: TIBXSQLDA;
191	>	function GetSQLParams: ISQLParams;
192		function GetTransaction: TIBTransaction;
359	–	function GetTRHandle: PISC_TR_HANDLE;
360	–	procedure PreprocessSQL;
193		procedure SetDatabase(Value: TIBDatabase);
194		procedure SetSQL(Value: TStrings);
195		procedure SetTransaction(Value: TIBTransaction);
196		procedure SQLChanging(Sender: TObject);
197	<	procedure BeforeTransactionEnd(Sender: TObject);
197	>	procedure SQLChanged(Sender: TObject);
198	>	procedure BeforeTransactionEnd(Sender: TObject; Action: TTransactionAction);
199		public
200		constructor Create(AOwner: TComponent); override;
201		destructor Destroy; override;
202		procedure BatchInput(InputObject: TIBBatchInput);
203		procedure BatchOutput(OutputObject: TIBBatchOutput);
371	–	function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
204		procedure CheckClosed;           { raise error if query is not closed. }
205		procedure CheckOpen;             { raise error if query is not open.}
206		procedure CheckValidStatement;   { raise error if statement is invalid.}
207		procedure Close;
376	–	function Current: TIBXSQLDA;
208		procedure ExecQuery;
209	<	function FieldByName(FieldName: String): TIBXSQLVAR;
210	<	function ParamByName(ParamName: String): TIBXSQLVAR;
209	>	function HasField(FieldName: String): boolean;
210	>	function FieldByName(FieldName: String): ISQLData;
211	>	function ParamByName(ParamName: String): ISQLParam;
212		procedure FreeHandle;
213	<	function Next: TIBXSQLDA;
213	>	function Next: boolean;
214		procedure Prepare;
215		function GetUniqueRelationName: String;
216		property Bof: Boolean read FBOF;
385	–	property DBHandle: PISC_DB_HANDLE read GetDBHandle;
217		property Eof: Boolean read GetEOF;
218	<	property Fields[const Idx: Integer]: TIBXSQLVAR read GetFields;
218	>	property Current: IResults read FResults;
219	>	property Fields[const Idx: Integer]: ISQLData read GetFields; default;
220		property FieldIndex[FieldName: String]: Integer read GetFieldIndex;
221		property FieldCount: integer read GetFieldCount;
222	<	property Open: Boolean read FOpen;
223	<	property Params: TIBXSQLDA read GetSQLParams;
222	>	property Open: Boolean read GetOpen;
223	>	property Params: ISQLParams read GetSQLParams;
224		property Plan: String read GetPlan;
225	<	property Prepared: Boolean read FPrepared;
225	>	property Prepared: Boolean read GetPrepared;
226		property RecordCount: Integer read GetRecordCount;
227		property RowsAffected: Integer read GetRowsAffected;
228	<	property SQLType: TIBSQLTypes read FSQLType;
397	<	property TRHandle: PISC_TR_HANDLE read GetTRHandle;
398	<	property Handle: TISC_STMT_HANDLE read FHandle;
228	>	property SQLStatementType: TIBSQLStatementTypes read GetSQLStatementType;
229		property UniqueRelationName: String read GetUniqueRelationName;
230	+	property Statement: IStatement read FStatement;
231	+	property MetaData: IMetaData read FMetaData;
232		published
233		property Database: TIBDatabase read GetDatabase write SetDatabase;
234		property GenerateParamNames: Boolean read FGenerateParamNames write FGenerateParamNames;
#	Line 408 | Line 240 | type
240		property SQL: TStrings read FSQL write SetSQL;
241		property Transaction: TIBTransaction read GetTransaction write SetTransaction;
242		property OnSQLChanging: TNotifyEvent read FOnSQLChanging write FOnSQLChanging;
243	+	property OnSQLChanged: TNotifyEvent read FOnSQLChanged write FOnSQLChanged;
244		end;
245
246	+	procedure IBAlloc(var P; OldSize, NewSize: Integer);
247	+
248		implementation
249
250		uses
251	<	IBIntf, IBBlob, Variants , IBSQLMonitor;
251	>	Variants, IBSQLMonitor, FBMessages, IBCustomDataSet;
252
253	<	{ TIBXSQLVAR }
419	<	constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
420	<	begin
421	<	inherited Create;
422	<	FParent := Parent;
423	<	FSQL := Query;
424	<	end;
425	<
426	<	procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
253	>	procedure IBAlloc(var P; OldSize, NewSize: Integer);
254		var
428	–	szBuff: PChar;
429	–	s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
430	–	bSourceBlob, bDestBlob: Boolean;
431	–	iSegs: Int64;
432	–	iMaxSeg: Int64;
433	–	iSize: Int64;
434	–	iBlobType: Short;
435	–	begin
436	–	szBuff := nil;
437	–	bSourceBlob := True;
438	–	bDestBlob := True;
439	–	s_bhandle := nil;
440	–	d_bhandle := nil;
441	–	try
442	–	if (Source.IsNull) then
443	–	begin
444	–	IsNull := True;
445	–	exit;
446	–	end
447	–	else
448	–	if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
449	–	(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
450	–	exit; { arrays not supported }
451	–	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
452	–	(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
453	–	begin
454	–	AsXSQLVAR := Source.AsXSQLVAR;
455	–	exit;
456	–	end
457	–	else
458	–	if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
459	–	begin
460	–	szBuff := nil;
461	–	IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
462	–	Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
463	–	bSourceBlob := False;
464	–	iSize := Source.FXSQLVAR^.sqllen;
465	–	end
466	–	else
467	–	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
468	–	bDestBlob := False;
469	–
470	–	if bSourceBlob then
471	–	begin
472	–	{ read the blob }
473	–	Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
474	–	Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
475	–	0, nil), True);
476	–	try
477	–	IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
478	–	iBlobType);
479	–	szBuff := nil;
480	–	IBAlloc(szBuff, 0, iSize);
481	–	IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
482	–	finally
483	–	Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
484	–	end;
485	–	end;
486	–
487	–	if bDestBlob then
488	–	begin
489	–	{ write the blob }
490	–	FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
491	–	FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
492	–	0, nil), True);
493	–	try
494	–	IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
495	–	isNull := false
496	–	finally
497	–	FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
498	–	end;
499	–	end
500	–	else
501	–	begin
502	–	{ just copy the buffer }
503	–	FXSQLVAR.sqltype := SQL_TEXT;
504	–	FXSQLVAR.sqllen := iSize;
505	–	IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
506	–	Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
507	–	end;
508	–	finally
509	–	FreeMem(szBuff);
510	–	end;
511	–	end;
512	–
513	–	function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
514	–	var
515	–	Scaling : Int64;
255		i: Integer;
517	–	Val: Double;
518	–	begin
519	–	Scaling := 1; Val := Value;
520	–	if Scale > 0 then
521	–	begin
522	–	for i := 1 to Scale do
523	–	Scaling := Scaling * 10;
524	–	result := Val * Scaling;
525	–	end
526	–	else
527	–	if Scale < 0 then
528	–	begin
529	–	for i := -1 downto Scale do
530	–	Scaling := Scaling * 10;
531	–	result := Val / Scaling;
532	–	end
533	–	else
534	–	result := Val;
535	–	end;
536	–
537	–	function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
538	–	var
539	–	Scaling : Int64;
540	–	i: Integer;
541	–	Val: Int64;
542	–	begin
543	–	Scaling := 1; Val := Value;
544	–	if Scale > 0 then begin
545	–	for i := 1 to Scale do Scaling := Scaling * 10;
546	–	result := Val * Scaling;
547	–	end else if Scale < 0 then begin
548	–	for i := -1 downto Scale do Scaling := Scaling * 10;
549	–	result := Val div Scaling;
550	–	end else
551	–	result := Val;
552	–	end;
553	–
554	–	function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
555	–	var
556	–	Scaling : Int64;
557	–	i : Integer;
558	–	FractionText, PadText, CurrText: string;
559	–	begin
560	–	Result := 0;
561	–	Scaling := 1;
562	–	if Scale > 0 then
563	–	begin
564	–	for i := 1 to Scale do
565	–	Scaling := Scaling * 10;
566	–	result := Value * Scaling;
567	–	end
568	–	else
569	–	if Scale < 0 then
570	–	begin
571	–	for i := -1 downto Scale do
572	–	Scaling := Scaling * 10;
573	–	FractionText := IntToStr(abs(Value mod Scaling));
574	–	for i := Length(FractionText) to -Scale -1 do
575	–	PadText := '0' + PadText;
576	–	if Value < 0 then
577	–	CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
578	–	else
579	–	CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
580	–	try
581	–	result := StrToCurr(CurrText);
582	–	except
583	–	on E: Exception do
584	–	IBError(ibxeInvalidDataConversion, [nil]);
585	–	end;
586	–	end
587	–	else
588	–	result := Value;
589	–	end;
590	–
591	–	function TIBXSQLVAR.GetAsCurrency: Currency;
592	–	begin
593	–	result := 0;
594	–	if FSQL.Database.SQLDialect < 3 then
595	–	result := GetAsDouble
596	–	else begin
597	–	if not IsNull then
598	–	case FXSQLVAR^.sqltype and (not 1) of
599	–	SQL_TEXT, SQL_VARYING: begin
600	–	try
601	–	result := StrtoCurr(AsString);
602	–	except
603	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
604	–	end;
605	–	end;
606	–	SQL_SHORT:
607	–	result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
608	–	FXSQLVAR^.sqlscale);
609	–	SQL_LONG:
610	–	result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
611	–	FXSQLVAR^.sqlscale);
612	–	SQL_INT64:
613	–	result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
614	–	FXSQLVAR^.sqlscale);
615	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
616	–	result := Trunc(AsDouble);
617	–	else
618	–	IBError(ibxeInvalidDataConversion, [nil]);
619	–	end;
620	–	end;
621	–	end;
622	–
623	–	function TIBXSQLVAR.GetAsInt64: Int64;
624	–	begin
625	–	result := 0;
626	–	if not IsNull then
627	–	case FXSQLVAR^.sqltype and (not 1) of
628	–	SQL_TEXT, SQL_VARYING: begin
629	–	try
630	–	result := StrToInt64(AsString);
631	–	except
632	–	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
633	–	end;
634	–	end;
635	–	SQL_SHORT:
636	–	result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
637	–	FXSQLVAR^.sqlscale);
638	–	SQL_LONG:
639	–	result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
640	–	FXSQLVAR^.sqlscale);
641	–	SQL_INT64:
642	–	result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
643	–	FXSQLVAR^.sqlscale);
644	–	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
645	–	result := Trunc(AsDouble);
646	–	else
647	–	IBError(ibxeInvalidDataConversion, [nil]);
648	–	end;
649	–	end;
650	–
651	–	function TIBXSQLVAR.GetAsDateTime: TDateTime;
652	–	var
653	–	tm_date: TCTimeStructure;
654	–	msecs: word;
256		begin
257	<	result := 0;
258	<	if not IsNull then
658	<	case FXSQLVAR^.sqltype and (not 1) of
659	<	SQL_TEXT, SQL_VARYING: begin
660	<	try
661	<	result := StrToDate(AsString);
662	<	except
663	<	on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
664	<	end;
665	<	end;
666	<	SQL_TYPE_DATE: begin
667	<	isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
668	<	try
669	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
670	<	Word(tm_date.tm_mday));
671	<	except
672	<	on E: EConvertError do begin
673	<	IBError(ibxeInvalidDataConversion, [nil]);
674	<	end;
675	<	end;
676	<	end;
677	<	SQL_TYPE_TIME: begin
678	<	isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
679	<	try
680	<	msecs :=  (PISC_TIME(FXSQLVAR^.sqldata)^ mod 10000) div 10;
681	<	result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
682	<	Word(tm_date.tm_sec), msecs)
683	<	except
684	<	on E: EConvertError do begin
685	<	IBError(ibxeInvalidDataConversion, [nil]);
686	<	end;
687	<	end;
688	<	end;
689	<	SQL_TIMESTAMP: begin
690	<	isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
691	<	try
692	<	result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
693	<	Word(tm_date.tm_mday));
694	<	msecs := (PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time mod 10000) div 10;
695	<	if result >= 0 then
696	<	result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
697	<	Word(tm_date.tm_sec), msecs)
698	<	else
699	<	result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
700	<	Word(tm_date.tm_sec), msecs)
701	<	except
702	<	on E: EConvertError do begin
703	<	IBError(ibxeInvalidDataConversion, [nil]);
704	<	end;
705	<	end;
706	<	end;
707	<	else
708	<	IBError(ibxeInvalidDataConversion, [nil]);
709	<	end;
710	<	end;
711	<
712	<	function TIBXSQLVAR.GetAsDouble: Double;
713	<	begin
714	<	result := 0;
715	<	if not IsNull then begin
716	<	case FXSQLVAR^.sqltype and (not 1) of
717	<	SQL_TEXT, SQL_VARYING: begin
718	<	try
719	<	result := StrToFloat(AsString);
720	<	except
721	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
722	<	end;
723	<	end;
724	<	SQL_SHORT:
725	<	result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
726	<	FXSQLVAR^.sqlscale);
727	<	SQL_LONG:
728	<	result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
729	<	FXSQLVAR^.sqlscale);
730	<	SQL_INT64:
731	<	result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
732	<	SQL_FLOAT:
733	<	result := PFloat(FXSQLVAR^.sqldata)^;
734	<	SQL_DOUBLE, SQL_D_FLOAT:
735	<	result := PDouble(FXSQLVAR^.sqldata)^;
736	<	else
737	<	IBError(ibxeInvalidDataConversion, [nil]);
738	<	end;
739	<	if  FXSQLVAR^.sqlscale <> 0 then
740	<	result :=
741	<	StrToFloat(FloatToStrF(result, fffixed, 15,
742	<	Abs(FXSQLVAR^.sqlscale) ));
743	<	end;
744	<	end;
745	<
746	<	function TIBXSQLVAR.GetAsFloat: Float;
747	<	begin
748	<	result := 0;
749	<	try
750	<	result := AsDouble;
751	<	except
752	<	on E: EOverflow do
753	<	IBError(ibxeInvalidDataConversion, [nil]);
754	<	end;
755	<	end;
756	<
757	<	function TIBXSQLVAR.GetAsLong: Long;
758	<	begin
759	<	result := 0;
760	<	if not IsNull then
761	<	case FXSQLVAR^.sqltype and (not 1) of
762	<	SQL_TEXT, SQL_VARYING: begin
763	<	try
764	<	result := StrToInt(AsString);
765	<	except
766	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
767	<	end;
768	<	end;
769	<	SQL_SHORT:
770	<	result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
771	<	FXSQLVAR^.sqlscale));
772	<	SQL_LONG:
773	<	result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
774	<	FXSQLVAR^.sqlscale));
775	<	SQL_INT64:
776	<	result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
777	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
778	<	result := Trunc(AsDouble);
779	<	else
780	<	IBError(ibxeInvalidDataConversion, [nil]);
781	<	end;
782	<	end;
783	<
784	<	function TIBXSQLVAR.GetAsPointer: Pointer;
785	<	begin
786	<	if not IsNull then
787	<	result := FXSQLVAR^.sqldata
788	<	else
789	<	result := nil;
790	<	end;
791	<
792	<	function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
793	<	begin
794	<	result.gds_quad_high := 0;
795	<	result.gds_quad_low := 0;
796	<	if not IsNull then
797	<	case FXSQLVAR^.sqltype and (not 1) of
798	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD:
799	<	result := PISC_QUAD(FXSQLVAR^.sqldata)^;
800	<	else
801	<	IBError(ibxeInvalidDataConversion, [nil]);
802	<	end;
803	<	end;
804	<
805	<	function TIBXSQLVAR.GetAsShort: Short;
806	<	begin
807	<	result := 0;
808	<	try
809	<	result := AsLong;
810	<	except
811	<	on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
812	<	end;
813	<	end;
814	<
815	<
816	<	function TIBXSQLVAR.GetAsString: String;
817	<	var
818	<	sz: PChar;
819	<	str_len: Integer;
820	<	ss: TStringStream;
821	<	begin
822	<	result := '';
823	<	{ Check null, if so return a default string }
824	<	if not IsNull then
825	<	case FXSQLVar^.sqltype and (not 1) of
826	<	SQL_ARRAY:
827	<	result := '(Array)'; {do not localize}
828	<	SQL_BLOB: begin
829	<	ss := TStringStream.Create('');
830	<	try
831	<	SaveToStream(ss);
832	<	result := ss.DataString;
833	<	finally
834	<	ss.Free;
835	<	end;
836	<	end;
837	<	SQL_TEXT, SQL_VARYING: begin
838	<	sz := FXSQLVAR^.sqldata;
839	<	if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
840	<	str_len := FXSQLVar^.sqllen
841	<	else begin
842	<	str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
843	<	Inc(sz, 2);
844	<	end;
845	<	SetString(result, sz, str_len);
846	<	if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
847	<	result := TrimRight(result);
848	<	end;
849	<	SQL_TYPE_DATE:
850	<	case FSQL.Database.SQLDialect of
851	<	1 : result := DateTimeToStr(AsDateTime);
852	<	3 : result := DateToStr(AsDateTime);
853	<	end;
854	<	SQL_TYPE_TIME :
855	<	result := TimeToStr(AsDateTime);
856	<	SQL_TIMESTAMP:
857	<	result := DateTimeToStr(AsDateTime);
858	<	SQL_SHORT, SQL_LONG:
859	<	if FXSQLVAR^.sqlscale = 0 then
860	<	result := IntToStr(AsLong)
861	<	else if FXSQLVAR^.sqlscale >= (-4) then
862	<	result := CurrToStr(AsCurrency)
863	<	else
864	<	result := FloatToStr(AsDouble);
865	<	SQL_INT64:
866	<	if FXSQLVAR^.sqlscale = 0 then
867	<	result := IntToStr(AsInt64)
868	<	else if FXSQLVAR^.sqlscale >= (-4) then
869	<	result := CurrToStr(AsCurrency)
870	<	else
871	<	result := FloatToStr(AsDouble);
872	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
873	<	result := FloatToStr(AsDouble);
874	<	else
875	<	IBError(ibxeInvalidDataConversion, [nil]);
876	<	end;
877	<	end;
878	<
879	<	function TIBXSQLVAR.GetAsVariant: Variant;
880	<	begin
881	<	if IsNull then
882	<	result := NULL
883	<	{ Check null, if so return a default string }
884	<	else case FXSQLVar^.sqltype and (not 1) of
885	<	SQL_ARRAY:
886	<	result := '(Array)'; {do not localize}
887	<	SQL_BLOB:
888	<	result := '(Blob)'; {do not localize}
889	<	SQL_TEXT, SQL_VARYING:
890	<	result := AsString;
891	<	SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
892	<	result := AsDateTime;
893	<	SQL_SHORT, SQL_LONG:
894	<	if FXSQLVAR^.sqlscale = 0 then
895	<	result := AsLong
896	<	else if FXSQLVAR^.sqlscale >= (-4) then
897	<	result := AsCurrency
898	<	else
899	<	result := AsDouble;
900	<	SQL_INT64:
901	<	if FXSQLVAR^.sqlscale = 0 then
902	<	result := AsInt64
903	<	else if FXSQLVAR^.sqlscale >= (-4) then
904	<	result := AsCurrency
905	<	else
906	<	result := AsDouble;
907	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
908	<	result := AsDouble;
909	<	else
910	<	IBError(ibxeInvalidDataConversion, [nil]);
911	<	end;
912	<	end;
913	<
914	<	function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
915	<	begin
916	<	result := FXSQLVAR;
917	<	end;
918	<
919	<	function TIBXSQLVAR.GetIsNull: Boolean;
920	<	begin
921	<	result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
922	<	end;
923	<
924	<	function TIBXSQLVAR.GetIsNullable: Boolean;
925	<	begin
926	<	result := (FXSQLVAR^.sqltype and 1 = 1);
927	<	end;
928	<
929	<	procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
930	<	var
931	<	fs: TFileStream;
932	<	begin
933	<	fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
934	<	try
935	<	LoadFromStream(fs);
936	<	finally
937	<	fs.Free;
938	<	end;
939	<	end;
940	<
941	<	procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
942	<	var
943	<	bs: TIBBlobStream;
944	<	begin
945	<	bs := TIBBlobStream.Create;
946	<	try
947	<	bs.Mode := bmWrite;
948	<	bs.Database := FSQL.Database;
949	<	bs.Transaction := FSQL.Transaction;
950	<	Stream.Seek(0, soFromBeginning);
951	<	bs.LoadFromStream(Stream);
952	<	bs.Finalize;
953	<	AsQuad := bs.BlobID;
954	<	finally
955	<	bs.Free;
956	<	end;
957	<	end;
958	<
959	<	procedure TIBXSQLVAR.SaveToFile(const FileName: String);
960	<	var
961	<	fs: TFileStream;
962	<	begin
963	<	fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
964	<	try
965	<	SaveToStream(fs);
966	<	finally
967	<	fs.Free;
968	<	end;
969	<	end;
970	<
971	<	procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
972	<	var
973	<	bs: TIBBlobStream;
974	<	begin
975	<	bs := TIBBlobStream.Create;
976	<	try
977	<	bs.Mode := bmRead;
978	<	bs.Database := FSQL.Database;
979	<	bs.Transaction := FSQL.Transaction;
980	<	bs.BlobID := AsQuad;
981	<	bs.SaveToStream(Stream);
982	<	finally
983	<	bs.Free;
984	<	end;
985	<	end;
986	<
987	<	function TIBXSQLVAR.GetSize: Integer;
988	<	begin
989	<	result := FXSQLVAR^.sqllen;
990	<	end;
991	<
992	<	function TIBXSQLVAR.GetSQLType: Integer;
993	<	begin
994	<	result := FXSQLVAR^.sqltype and (not 1);
995	<	end;
996	<
997	<	procedure TIBXSQLVAR.xSetAsCurrency(Value: Currency);
998	<	begin
999	<	if IsNullable then
1000	<	IsNull := False;
1001	<	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1002	<	FXSQLVAR^.sqlscale := -4;
1003	<	FXSQLVAR^.sqllen := SizeOf(Int64);
1004	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1005	<	PCurrency(FXSQLVAR^.sqldata)^ := Value;
1006	<	FModified := True;
1007	<	end;
1008	<
1009	<	procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
1010	<	var
1011	<	i: Integer;
1012	<	begin
1013	<	if FSQL.Database.SQLDialect < 3 then
1014	<	AsDouble := Value
1015	<	else
1016	<	begin
1017	<
1018	<	if FUniqueName then
1019	<	xSetAsCurrency(Value)
1020	<	else
1021	<	for i := 0 to FParent.FCount - 1 do
1022	<	if FParent[i].FName = FName then
1023	<	FParent[i].xSetAsCurrency(Value);
1024	<	end;
1025	<	end;
1026	<
1027	<	procedure TIBXSQLVAR.xSetAsInt64(Value: Int64);
1028	<	begin
1029	<	if IsNullable then
1030	<	IsNull := False;
1031	<
1032	<	FXSQLVAR^.sqltype := SQL_INT64 or (FXSQLVAR^.sqltype and 1);
1033	<	FXSQLVAR^.sqlscale := 0;
1034	<	FXSQLVAR^.sqllen := SizeOf(Int64);
1035	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1036	<	PInt64(FXSQLVAR^.sqldata)^ := Value;
1037	<	FModified := True;
1038	<	end;
1039	<
1040	<	procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
1041	<	var
1042	<	i: Integer;
1043	<	begin
1044	<	if FUniqueName then
1045	<	xSetAsInt64(Value)
1046	<	else
1047	<	for i := 0 to FParent.FCount - 1 do
1048	<	if FParent[i].FName = FName then
1049	<	FParent[i].xSetAsInt64(Value);
1050	<	end;
1051	<
1052	<	procedure TIBXSQLVAR.xSetAsDate(Value: TDateTime);
1053	<	var
1054	<	tm_date: TCTimeStructure;
1055	<	Yr, Mn, Dy: Word;
1056	<	begin
1057	<	if IsNullable then
1058	<	IsNull := False;
1059	<
1060	<	FXSQLVAR^.sqltype := SQL_TYPE_DATE or (FXSQLVAR^.sqltype and 1);
1061	<	DecodeDate(Value, Yr, Mn, Dy);
1062	<	with tm_date do begin
1063	<	tm_sec := 0;
1064	<	tm_min := 0;
1065	<	tm_hour := 0;
1066	<	tm_mday := Dy;
1067	<	tm_mon := Mn - 1;
1068	<	tm_year := Yr - 1900;
1069	<	end;
1070	<	FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
1071	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1072	<	isc_encode_sql_date(@tm_date, PISC_DATE(FXSQLVAR^.sqldata));
1073	<	FModified := True;
1074	<	end;
1075	<
1076	<	procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
1077	<	var
1078	<	i: Integer;
1079	<	begin
1080	<	if FSQL.Database.SQLDialect < 3 then
1081	<	begin
1082	<	AsDateTime := Value;
1083	<	exit;
1084	<	end;
1085	<
1086	<	if FUniqueName then
1087	<	xSetAsDate(Value)
1088	<	else
1089	<	for i := 0 to FParent.FCount - 1 do
1090	<	if FParent[i].FName = FName then
1091	<	FParent[i].xSetAsDate(Value);
1092	<	end;
1093	<
1094	<	procedure TIBXSQLVAR.xSetAsTime(Value: TDateTime);
1095	<	var
1096	<	tm_date: TCTimeStructure;
1097	<	Hr, Mt, S, Ms: Word;
1098	<	begin
1099	<	if IsNullable then
1100	<	IsNull := False;
1101	<
1102	<	FXSQLVAR^.sqltype := SQL_TYPE_TIME or (FXSQLVAR^.sqltype and 1);
1103	<	DecodeTime(Value, Hr, Mt, S, Ms);
1104	<	with tm_date do begin
1105	<	tm_sec := S;
1106	<	tm_min := Mt;
1107	<	tm_hour := Hr;
1108	<	tm_mday := 0;
1109	<	tm_mon := 0;
1110	<	tm_year := 0;
1111	<	end;
1112	<	FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
1113	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1114	<	isc_encode_sql_time(@tm_date, PISC_TIME(FXSQLVAR^.sqldata));
1115	<	if Ms > 0 then
1116	<	Inc(PISC_TIME(FXSQLVAR^.sqldata)^,Ms*10);
1117	<	FModified := True;
1118	<	end;
1119	<
1120	<	procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
1121	<	var
1122	<	i: Integer;
1123	<	begin
1124	<	if FSQL.Database.SQLDialect < 3 then
1125	<	begin
1126	<	AsDateTime := Value;
1127	<	exit;
1128	<	end;
1129	<
1130	<	if FUniqueName then
1131	<	xSetAsTime(Value)
1132	<	else
1133	<	for i := 0 to FParent.FCount - 1 do
1134	<	if FParent[i].FName = FName then
1135	<	FParent[i].xSetAsTime(Value);
1136	<	end;
1137	<
1138	<	procedure TIBXSQLVAR.xSetAsDateTime(Value: TDateTime);
1139	<	var
1140	<	tm_date: TCTimeStructure;
1141	<	Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
1142	<	begin
1143	<	if IsNullable then
1144	<	IsNull := False;
1145	<
1146	<	FXSQLVAR^.sqltype := SQL_TIMESTAMP or (FXSQLVAR^.sqltype and 1);
1147	<	DecodeDate(Value, Yr, Mn, Dy);
1148	<	DecodeTime(Value, Hr, Mt, S, Ms);
1149	<	with tm_date do begin
1150	<	tm_sec := S;
1151	<	tm_min := Mt;
1152	<	tm_hour := Hr;
1153	<	tm_mday := Dy;
1154	<	tm_mon := Mn - 1;
1155	<	tm_year := Yr - 1900;
1156	<	end;
1157	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1158	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1159	<	isc_encode_date(@tm_date, PISC_QUAD(FXSQLVAR^.sqldata));
1160	<	if Ms > 0 then
1161	<	Inc(PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time,Ms*10);
1162	<	FModified := True;
1163	<	end;
1164	<
1165	<	procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
1166	<	var
1167	<	i: Integer;
1168	<	begin
1169	<	if FUniqueName then
1170	<	xSetAsDateTime(value)
1171	<	else
1172	<	for i := 0 to FParent.FCount - 1 do
1173	<	if FParent[i].FName = FName then
1174	<	FParent[i].xSetAsDateTime(Value);
1175	<	end;
1176	<
1177	<	procedure TIBXSQLVAR.xSetAsDouble(Value: Double);
1178	<	begin
1179	<	if IsNullable then
1180	<	IsNull := False;
1181	<
1182	<	FXSQLVAR^.sqltype := SQL_DOUBLE or (FXSQLVAR^.sqltype and 1);
1183	<	FXSQLVAR^.sqllen := SizeOf(Double);
1184	<	FXSQLVAR^.sqlscale := 0;
1185	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1186	<	PDouble(FXSQLVAR^.sqldata)^ := Value;
1187	<	FModified := True;
1188	<	end;
1189	<
1190	<	procedure TIBXSQLVAR.SetAsDouble(Value: Double);
1191	<	var
1192	<	i: Integer;
1193	<	begin
1194	<	if FUniqueName then
1195	<	xSetAsDouble(Value)
1196	<	else
1197	<	for i := 0 to FParent.FCount - 1 do
1198	<	if FParent[i].FName = FName then
1199	<	FParent[i].xSetAsDouble(Value);
1200	<	end;
1201	<
1202	<	procedure TIBXSQLVAR.xSetAsFloat(Value: Float);
1203	<	begin
1204	<	if IsNullable then
1205	<	IsNull := False;
1206	<
1207	<	FXSQLVAR^.sqltype := SQL_FLOAT or (FXSQLVAR^.sqltype and 1);
1208	<	FXSQLVAR^.sqllen := SizeOf(Float);
1209	<	FXSQLVAR^.sqlscale := 0;
1210	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1211	<	PSingle(FXSQLVAR^.sqldata)^ := Value;
1212	<	FModified := True;
1213	<	end;
1214	<
1215	<	procedure TIBXSQLVAR.SetAsFloat(Value: Float);
1216	<	var
1217	<	i: Integer;
1218	<	begin
1219	<	if FUniqueName then
1220	<	xSetAsFloat(Value)
1221	<	else
1222	<	for i := 0 to FParent.FCount - 1 do
1223	<	if FParent[i].FName = FName then
1224	<	FParent[i].xSetAsFloat(Value);
1225	<	end;
1226	<
1227	<	procedure TIBXSQLVAR.xSetAsLong(Value: Long);
1228	<	begin
1229	<	if IsNullable then
1230	<	IsNull := False;
1231	<
1232	<	FXSQLVAR^.sqltype := SQL_LONG or (FXSQLVAR^.sqltype and 1);
1233	<	FXSQLVAR^.sqllen := SizeOf(Long);
1234	<	FXSQLVAR^.sqlscale := 0;
1235	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1236	<	PLong(FXSQLVAR^.sqldata)^ := Value;
1237	<	FModified := True;
1238	<	end;
1239	<
1240	<	procedure TIBXSQLVAR.SetAsLong(Value: Long);
1241	<	var
1242	<	i: Integer;
1243	<	begin
1244	<	if FUniqueName then
1245	<	xSetAsLong(Value)
1246	<	else
1247	<	for i := 0 to FParent.FCount - 1 do
1248	<	if FParent[i].FName = FName then
1249	<	FParent[i].xSetAsLong(Value);
1250	<	end;
1251	<
1252	<	procedure TIBXSQLVAR.xSetAsPointer(Value: Pointer);
1253	<	begin
1254	<	if IsNullable and (Value = nil) then
1255	<	IsNull := True
1256	<	else begin
1257	<	IsNull := False;
1258	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1259	<	Move(Value^, FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1260	<	end;
1261	<	FModified := True;
1262	<	end;
1263	<
1264	<	procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
1265	<	var
1266	<	i: Integer;
1267	<	begin
1268	<	if FUniqueName then
1269	<	xSetAsPointer(Value)
1270	<	else
1271	<	for i := 0 to FParent.FCount - 1 do
1272	<	if FParent[i].FName = FName then
1273	<	FParent[i].xSetAsPointer(Value);
1274	<	end;
1275	<
1276	<	procedure TIBXSQLVAR.xSetAsQuad(Value: TISC_QUAD);
1277	<	begin
1278	<	if IsNullable then
1279	<	IsNull := False;
1280	<	if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
1281	<	(FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
1282	<	IBError(ibxeInvalidDataConversion, [nil]);
1283	<	FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
1284	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1285	<	PISC_QUAD(FXSQLVAR^.sqldata)^ := Value;
1286	<	FModified := True;
1287	<	end;
1288	<
1289	<	procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
1290	<	var
1291	<	i: Integer;
1292	<	begin
1293	<	if FUniqueName then
1294	<	xSetAsQuad(Value)
1295	<	else
1296	<	for i := 0 to FParent.FCount - 1 do
1297	<	if FParent[i].FName = FName then
1298	<	FParent[i].xSetAsQuad(Value);
1299	<	end;
1300	<
1301	<	procedure TIBXSQLVAR.xSetAsShort(Value: Short);
1302	<	begin
1303	<	if IsNullable then
1304	<	IsNull := False;
1305	<
1306	<	FXSQLVAR^.sqltype := SQL_SHORT or (FXSQLVAR^.sqltype and 1);
1307	<	FXSQLVAR^.sqllen := SizeOf(Short);
1308	<	FXSQLVAR^.sqlscale := 0;
1309	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen);
1310	<	PShort(FXSQLVAR^.sqldata)^ := Value;
1311	<	FModified := True;
1312	<	end;
1313	<
1314	<	procedure TIBXSQLVAR.SetAsShort(Value: Short);
1315	<	var
1316	<	i: Integer;
1317	<	begin
1318	<	if FUniqueName then
1319	<	xSetAsShort(Value)
1320	<	else
1321	<	for i := 0 to FParent.FCount - 1 do
1322	<	if FParent[i].FName = FName then
1323	<	FParent[i].xSetAsShort(Value);
1324	<	end;
1325	<
1326	<	procedure TIBXSQLVAR.xSetAsString(Value: String);
1327	<	var
1328	<	stype: Integer;
1329	<	ss: TStringStream;
1330	<
1331	<	procedure SetStringValue;
1332	<	var
1333	<	i: Integer;
1334	<	begin
1335	<	if (FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
1336	<	(FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
1337	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen)
1338	<	else begin
1339	<	FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
1340	<	FXSQLVAR^.sqllen := Length(Value);
1341	<	IBAlloc(FXSQLVAR^.sqldata, 0, FXSQLVAR^.sqllen + 1);
1342	<	if (Length(Value) > 0) then
1343	<	Move(Value[1], FXSQLVAR^.sqldata^, FXSQLVAR^.sqllen);
1344	<	end;
1345	<	FModified := True;
1346	<	end;
1347	<
1348	<	begin
1349	<	if IsNullable then
1350	<	IsNull := False;
1351	<
1352	<	stype := FXSQLVAR^.sqltype and (not 1);
1353	<	if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
1354	<	SetStringValue
1355	<	else begin
1356	<	if (stype = SQL_BLOB) then
1357	<	begin
1358	<	ss := TStringStream.Create(Value);
1359	<	try
1360	<	LoadFromStream(ss);
1361	<	finally
1362	<	ss.Free;
1363	<	end;
1364	<	end
1365	<	else if Value = '' then
1366	<	IsNull := True
1367	<	else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
1368	<	(stype = SQL_TYPE_TIME) then
1369	<	xSetAsDateTime(StrToDateTime(Value))
1370	<	else
1371	<	SetStringValue;
1372	<	end;
1373	<	end;
1374	<
1375	<	procedure TIBXSQLVAR.SetAsString(Value: String);
1376	<	var
1377	<	i: integer;
1378	<	begin
1379	<	if FUniqueName then
1380	<	xSetAsString(Value)
1381	<	else
1382	<	for i := 0 to FParent.FCount - 1 do
1383	<	if FParent[i].FName = FName then
1384	<	FParent[i].xSetAsString(Value);
1385	<	end;
1386	<
1387	<	procedure TIBXSQLVAR.xSetAsVariant(Value: Variant);
1388	<	begin
1389	<	if VarIsNull(Value) then
1390	<	IsNull := True
1391	<	else case VarType(Value) of
1392	<	varEmpty, varNull:
1393	<	IsNull := True;
1394	<	varSmallint, varInteger, varByte,
1395	<	varWord, varShortInt:
1396	<	AsLong := Value;
1397	<	varInt64:
1398	<	AsInt64 := Value;
1399	<	varSingle, varDouble:
1400	<	AsDouble := Value;
1401	<	varCurrency:
1402	<	AsCurrency := Value;
1403	<	varBoolean:
1404	<	if Value then
1405	<	AsLong := ISC_TRUE
1406	<	else
1407	<	AsLong := ISC_FALSE;
1408	<	varDate:
1409	<	AsDateTime := Value;
1410	<	varOleStr, varString:
1411	<	AsString := Value;
1412	<	varArray:
1413	<	IBError(ibxeNotSupported, [nil]);
1414	<	varByRef, varDispatch, varError, varUnknown, varVariant:
1415	<	IBError(ibxeNotPermitted, [nil]);
1416	<	end;
1417	<	end;
1418	<
1419	<	procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
1420	<	var
1421	<	i: integer;
1422	<	begin
1423	<	if FUniqueName then
1424	<	xSetAsVariant(Value)
1425	<	else
1426	<	for i := 0 to FParent.FCount - 1 do
1427	<	if FParent[i].FName = FName then
1428	<	FParent[i].xSetAsVariant(Value);
1429	<	end;
1430	<
1431	<	procedure TIBXSQLVAR.xSetAsXSQLVAR(Value: PXSQLVAR);
1432	<	var
1433	<	sqlind: PShort;
1434	<	sqldata: PChar;
1435	<	local_sqllen: Integer;
1436	<	begin
1437	<	sqlind := FXSQLVAR^.sqlind;
1438	<	sqldata := FXSQLVAR^.sqldata;
1439	<	Move(Value^, FXSQLVAR^, SizeOf(TXSQLVAR));
1440	<	FXSQLVAR^.sqlind := sqlind;
1441	<	FXSQLVAR^.sqldata := sqldata;
1442	<	if (Value^.sqltype and 1 = 1) then
1443	<	begin
1444	<	if (FXSQLVAR^.sqlind = nil) then
1445	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1446	<	FXSQLVAR^.sqlind^ := Value^.sqlind^;
1447	<	end
1448	<	else
1449	<	if (FXSQLVAR^.sqlind <> nil) then
1450	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1451	<	if ((FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
1452	<	local_sqllen := FXSQLVAR^.sqllen + 2
1453	<	else
1454	<	local_sqllen := FXSQLVAR^.sqllen;
1455	<	FXSQLVAR^.sqlscale := Value^.sqlscale;
1456	<	IBAlloc(FXSQLVAR^.sqldata, 0, local_sqllen);
1457	<	Move(Value^.sqldata[0], FXSQLVAR^.sqldata[0], local_sqllen);
1458	<	FModified := True;
1459	<	end;
1460	<
1461	<	procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
1462	<	var
1463	<	i: Integer;
1464	<	begin
1465	<	if FUniqueName then
1466	<	xSetAsXSQLVAR(Value)
1467	<	else
1468	<	for i := 0 to FParent.FCount - 1 do
1469	<	if FParent[i].FName = FName then
1470	<	FParent[i].xSetAsXSQLVAR(Value);
1471	<	end;
1472	<
1473	<	procedure TIBXSQLVAR.xSetIsNull(Value: Boolean);
1474	<	begin
1475	<	if Value then
1476	<	begin
1477	<	if not IsNullable then
1478	<	IsNullable := True;
1479	<
1480	<	if Assigned(FXSQLVAR^.sqlind) then
1481	<	FXSQLVAR^.sqlind^ := -1;
1482	<	FModified := True;
1483	<	end
1484	<	else
1485	<	if ((not Value) and IsNullable) then
1486	<	begin
1487	<	if Assigned(FXSQLVAR^.sqlind) then
1488	<	FXSQLVAR^.sqlind^ := 0;
1489	<	FModified := True;
1490	<	end;
1491	<	end;
1492	<
1493	<	procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
1494	<	var
1495	<	i: Integer;
1496	<	begin
1497	<	if FUniqueName then
1498	<	xSetIsNull(Value)
1499	<	else
1500	<	for i := 0 to FParent.FCount - 1 do
1501	<	if FParent[i].FName = FName then
1502	<	FParent[i].xSetIsNull(Value);
1503	<	end;
1504	<
1505	<	procedure TIBXSQLVAR.xSetIsNullable(Value: Boolean);
1506	<	begin
1507	<	if (Value <> IsNullable) then
1508	<	begin
1509	<	if Value then
1510	<	begin
1511	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype or 1;
1512	<	IBAlloc(FXSQLVAR^.sqlind, 0, SizeOf(Short));
1513	<	end
1514	<	else
1515	<	begin
1516	<	FXSQLVAR^.sqltype := FXSQLVAR^.sqltype and (not 1);
1517	<	ReallocMem(FXSQLVAR^.sqlind, 0);
1518	<	end;
1519	<	end;
1520	<	end;
1521	<
1522	<	procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
1523	<	var
1524	<	i: Integer;
1525	<	begin
1526	<	if FUniqueName then
1527	<	xSetIsNullable(Value)
1528	<	else
1529	<	for i := 0 to FParent.FCount - 1 do
1530	<	if FParent[i].FName = FName then
1531	<	FParent[i].xSetIsNullable(Value);
1532	<	end;
1533	<
1534	<	procedure TIBXSQLVAR.Clear;
1535	<	begin
1536	<	IsNull := true;
1537	<	end;
1538	<
1539	<
1540	<	{ TIBXSQLDA }
1541	<	constructor TIBXSQLDA.Create(Query: TIBSQL; sqldaType: TIBXSQLDAType);
1542	<	begin
1543	<	inherited Create;
1544	<	FSQL := Query;
1545	<	FSize := 0;
1546	<	FUniqueRelationName := '';
1547	<	FInputSQLDA := sqldaType = daInput;
1548	<	end;
1549	<
1550	<	destructor TIBXSQLDA.Destroy;
1551	<	var
1552	<	i: Integer;
1553	<	begin
1554	<	if FXSQLDA <> nil then
1555	<	begin
1556	<	for i := 0 to FSize - 1 do
1557	<	begin
1558	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
1559	<	FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
1560	<	FXSQLVARs[i].Free ;
1561	<	end;
1562	<	FreeMem(FXSQLDA);
1563	<	FXSQLDA := nil;
1564	<	FXSQLVARs := nil;
1565	<	end;
1566	<	inherited Destroy;
1567	<	end;
1568	<
1569	<	procedure TIBXSQLDA.SetParamName(FieldName: String; Idx: Integer;
1570	<	UniqueName: boolean);
1571	<	var
1572	<	fn: string;
1573	<	begin
1574	<	{$ifdef UseCaseSensitiveParamName}
1575	<	FXSQLVARs[Idx].FName := AnsiUpperCase(FieldName);
1576	<	{$else}
1577	<	FXSQLVARs[Idx].FName := FieldName;
1578	<	{$endif}
1579	<	FXSQLVARs[Idx].FIndex := Idx;
1580	<	FXSQLVARs[Idx].FUniqueName :=  UniqueName
1581	<	end;
1582	<
1583	<	function TIBXSQLDA.GetModified: Boolean;
1584	<	var
1585	<	i: Integer;
1586	<	begin
1587	<	result := False;
1588	<	for i := 0 to FCount - 1 do
1589	<	if FXSQLVARs[i].Modified then
1590	<	begin
1591	<	result := True;
1592	<	exit;
1593	<	end;
1594	<	end;
1595	<
1596	<	function TIBXSQLDA.GetRecordSize: Integer;
1597	<	begin
1598	<	result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
1599	<	end;
1600	<
1601	<	function TIBXSQLDA.GetXSQLDA: PXSQLDA;
1602	<	begin
1603	<	result := FXSQLDA;
1604	<	end;
1605	<
1606	<	function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
1607	<	begin
1608	<	if (Idx < 0) or (Idx >= FCount) then
1609	<	IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
1610	<	result := FXSQLVARs[Idx]
1611	<	end;
1612	<
1613	<	function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
1614	<	begin
1615	<	result := GetXSQLVARByName(Idx);
1616	<	if result = nil then
1617	<	IBError(ibxeFieldNotFound, [Idx]);
1618	<	end;
1619	<
1620	<	function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
1621	<	var
1622	<	s: String;
1623	<	i: Integer;
1624	<	begin
1625	<	{$ifdef ALLOWDIALECT3PARAMNAMES}
1626	<	s := FormatIdentifierValueNC(FSQL.Database.SQLDialect, Idx);
1627	<	{$else}
1628	<	{$ifdef UseCaseSensitiveParamName}
1629	<	s := AnsiUpperCase(Idx);
1630	<	{$else}
1631	<	s := Idx;
1632	<	{$endif}
1633	<	{$endif}
1634	<	for i := 0 to FCount - 1 do
1635	<	if Vars[i].FName = s then
1636	<	begin
1637	<	Result := FXSQLVARs[i];
1638	<	Exit;
1639	<	end;
1640	<	Result := nil;
1641	<	end;
1642	<
1643	<	procedure TIBXSQLDA.Initialize;
1644	<
1645	<	function VarByName(idx: string; limit: integer): TIBXSQLVAR;
1646	<	var
1647	<	k: integer;
1648	<	begin
1649	<	for k := 0 to limit do
1650	<	if FXSQLVARs[k].FName = idx then
1651	<	begin
1652	<	Result := FXSQLVARs[k];
1653	<	Exit;
1654	<	end;
1655	<	Result := nil;
1656	<	end;
1657	<
1658	<	var
1659	<	i, j, j_len: Integer;
1660	<	st: String;
1661	<	bUnique: Boolean;
1662	<	sBaseName: string;
1663	<	begin
1664	<	bUnique := True;
1665	<	if FXSQLDA <> nil then
1666	<	begin
1667	<	for i := 0 to FCount - 1 do
1668	<	begin
1669	<	with FXSQLVARs[i].Data^ do
1670	<	begin
1671	<
1672	<	{First get the unique relation name, if any}
1673	<
1674	<	if bUnique and (strpas(relname) <> '') then
1675	<	begin
1676	<	if FUniqueRelationName = '' then
1677	<	FUniqueRelationName := strpas(relname)
1678	<	else
1679	<	if strpas(relname) <> FUniqueRelationName then
1680	<	begin
1681	<	FUniqueRelationName := '';
1682	<	bUnique := False;
1683	<	end;
1684	<	end;
1685	<
1686	<	{If an output SQLDA then copy the aliasnames to the FName list. Ensure
1687	<	that they are all upper case only and disambiguated.
1688	<	}
1689	<
1690	<	if not FInputSQLDA then
1691	<	begin
1692	<	st := Space2Underscore(AnsiUppercase(strpas(aliasname)));
1693	<	if st = '' then
1694	<	begin
1695	<	sBaseName := 'F_'; {do not localize}
1696	<	aliasname_length := 2;
1697	<	j := 1; j_len := 1;
1698	<	st := sBaseName + IntToStr(j);
1699	<	end
1700	<	else
1701	<	begin
1702	<	j := 0; j_len := 0;
1703	<	sBaseName := st;
1704	<	end;
1705	<
1706	<	{Look for other columns with the same name and make unique}
1707	<
1708	<	while VarByName(st,i-1) <> nil do
1709	<	begin
1710	<	Inc(j);
1711	<	j_len := Length(IntToStr(j));
1712	<	if j_len + Length(sBaseName) > 31 then
1713	<	st := Copy(sBaseName, 1, 31 - j_len) + IntToStr(j)
1714	<	else
1715	<	st := sBaseName + IntToStr(j);
1716	<	end;
1717	<
1718	<	FXSQLVARs[i].FName := st;
1719	<	end;
1720	<
1721	<	{Finally initialise the XSQLVAR}
1722	<
1723	<	FXSQLVARs[i].FIndex := i;
1724	<
1725	<	case sqltype and (not 1) of
1726	<	SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
1727	<	SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT,
1728	<	SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
1729	<	if (sqllen = 0) then
1730	<	{ Make sure you get a valid pointer anyway
1731	<	select '' from foo }
1732	<	IBAlloc(sqldata, 0, 1)
1733	<	else
1734	<	IBAlloc(sqldata, 0, sqllen)
1735	<	end;
1736	<	SQL_VARYING: begin
1737	<	IBAlloc(sqldata, 0, sqllen + 2);
1738	<	end;
1739	<	else
1740	<	IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
1741	<	end;
1742	<	if (sqltype and 1 = 1) then
1743	<	IBAlloc(sqlind, 0, SizeOf(Short))
1744	<	else
1745	<	if (sqlind <> nil) then
1746	<	ReallocMem(sqlind, 0);
1747	<	end;
1748	<	end;
1749	<	end;
1750	<	end;
1751	<
1752	<	procedure TIBXSQLDA.SetCount(Value: Integer);
1753	<	var
1754	<	i, OldSize: Integer;
1755	<	p : PXSQLVAR;
1756	<	begin
1757	<	FCount := Value;
1758	<	if FCount = 0 then
1759	<	FUniqueRelationName := ''
1760	<	else
1761	<	begin
1762	<	if FSize > 0 then
1763	<	OldSize := XSQLDA_LENGTH(FSize)
1764	<	else
1765	<	OldSize := 0;
1766	<	if FCount > FSize then
1767	<	begin
1768	<	IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
1769	<	SetLength(FXSQLVARs, FCount);
1770	<	FXSQLDA^.version := SQLDA_VERSION1;
1771	<	p := @FXSQLDA^.sqlvar[0];
1772	<	for i := 0 to FCount - 1 do
1773	<	begin
1774	<	if i >= FSize then
1775	<	FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
1776	<	FXSQLVARs[i].FXSQLVAR := p;
1777	<	p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
1778	<	end;
1779	<	FSize := FCount;
1780	<	end;
1781	<	if FSize > 0 then
1782	<	begin
1783	<	FXSQLDA^.sqln := Value;
1784	<	FXSQLDA^.sqld := Value;
1785	<	end;
1786	<	end;
257	>	ReallocMem(Pointer(P), NewSize);
258	>	for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
259		end;
260
261		{ TIBOutputDelimitedFile }
#	Line 1829 | Line 301 | begin
301		begin
302		for i := 0 to Columns.Count - 1 do
303		if i = 0 then
304	<	st := strpas(Columns[i].Data^.aliasname)
304	>	st := Columns[i].GetAliasname
305		else
306	<	st := st + FColDelimiter + strpas(Columns[i].Data^.aliasname);
306	>	st := st + FColDelimiter + Columns[i].GetAliasname;
307		st := st + FRowDelimiter;
308		{$IFDEF UNIX}
309		if FHandle <> -1 then
#	Line 2022 | Line 494 | begin
494		for i := 0 to Columns.Count - 1 do
495		begin
496		{$IFDEF UNIX}
497	<	BytesWritten := FpWrite(FHandle,Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen);
497	>	BytesWritten := FpWrite(FHandle,Columns[i].GetAsPointer^, Columns[i].GetSize);
498		{$ELSE}
499	<	WriteFile(FHandle, Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen,
499	>	WriteFile(FHandle, Columns[i].GetAsPointer^, Columns[i].GetSize,
500		BytesWritten, nil);
501		{$ENDIF}
502	<	if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
502	>	if BytesWritten <> DWORD(Columns[i].GetSize) then
503		exit;
504		end;
505		result := True;
#	Line 2062 | Line 534 | begin
534		for i := 0 to Params.Count - 1 do
535		begin
536		{$IFDEF UNIX}
537	<	BytesRead := FpRead(FHandle,Params[i].Data^.sqldata^,Params[i].Data^.sqllen);
537	>	BytesRead := FpRead(FHandle,Params[i].GetAsPointer^,Params[i].GetSize);
538		{$ELSE}
539	<	ReadFile(FHandle, Params[i].Data^.sqldata^, Params[i].Data^.sqllen,
539	>	ReadFile(FHandle, Params[i].GetAsPointer^, Params[i].GetSize,
540		BytesRead, nil);
541		{$ENDIF}
542	<	if BytesRead <> DWORD(Params[i].Data^.sqllen) then
542	>	if BytesRead <> DWORD(Params[i].GetSize) then
543		exit;
544		end;
545		result := True;
#	Line 2096 | Line 568 | end;
568		constructor TIBSQL.Create(AOwner: TComponent);
569		begin
570		inherited Create(AOwner);
2099	–	FIBLoaded := False;
2100	–	CheckIBLoaded;
2101	–	FIBLoaded := True;
571		FGenerateParamNames := False;
572		FGoToFirstRecordOnExecute := True;
573		FBase := TIBBase.Create(Self);
574		FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
575		FBase.BeforeTransactionEnd := BeforeTransactionEnd;
2107	–	FBOF := False;
2108	–	FEOF := False;
2109	–	FPrepared := False;
576		FRecordCount := 0;
577		FSQL := TStringList.Create;
578		TStringList(FSQL).OnChanging := SQLChanging;
579	<	FProcessedSQL := TStringList.Create;
2114	<	FHandle := nil;
2115	<	FSQLParams := TIBXSQLDA.Create(self,daInput);
2116	<	FSQLRecord := TIBXSQLDA.Create(self,daOutput);
2117	<	FSQLType := SQLUnknown;
579	>	TStringList(FSQL).OnChange := SQLChanged;
580		FParamCheck := True;
2119	–	FCursor := Name + RandomString(8);
581		if AOwner is TIBDatabase then
582		Database := TIBDatabase(AOwner)
583		else
#	Line 2126 | Line 587 | end;
587
588		destructor TIBSQL.Destroy;
589		begin
590	<	if FIBLoaded then
591	<	begin
592	<	if (FOpen) then
2132	<	Close;
2133	<	if (FHandle <> nil) then
2134	<	FreeHandle;
2135	<	FSQL.Free;
2136	<	FProcessedSQL.Free;
2137	<	FBase.Free;
2138	<	FSQLParams.Free;
2139	<	FSQLRecord.Free;
2140	<	end;
590	>	FreeHandle;
591	>	FSQL.Free;
592	>	FBase.Free;
593		inherited Destroy;
594		end;
595
#	Line 2145 | Line 597 | procedure TIBSQL.BatchInput(InputObject:
597		begin
598		if not Prepared then
599		Prepare;
600	<	InputObject.FParams := Self.FSQLParams;
600	>	InputObject.FParams := Self.GetSQLParams;
601		InputObject.ReadyFile;
602	<	if FSQLType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
602	>	if GetSQLStatementType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
603		while InputObject.ReadParameters do
604		ExecQuery;
605		end;
#	Line 2157 | Line 609 | begin
609		CheckClosed;
610		if not Prepared then
611		Prepare;
612	<	if FSQLType = SQLSelect then begin
612	>	if GetSQLStatementType = SQLSelect then begin
613		try
614		ExecQuery;
615	<	OutputObject.FColumns := Self.FSQLRecord;
615	>	OutputObject.FColumns := Self.FResults;
616		OutputObject.ReadyFile;
617		if not FGoToFirstRecordOnExecute then
618		Next;
#	Line 2174 | Line 626 | end;
626
627		procedure TIBSQL.CheckClosed;
628		begin
629	<	if FOpen then IBError(ibxeSQLOpen, [nil]);
629	>	if FResultSet <> nil  then IBError(ibxeSQLOpen, [nil]);
630		end;
631
632		procedure TIBSQL.CheckOpen;
633		begin
634	<	if not FOpen then IBError(ibxeSQLClosed, [nil]);
634	>	if FResultSet = nil then IBError(ibxeSQLClosed, [nil]);
635		end;
636
637		procedure TIBSQL.CheckValidStatement;
638		begin
639		FBase.CheckTransaction;
640	<	if (FHandle = nil) then
640	>	if (FStatement = nil) then
641		IBError(ibxeInvalidStatementHandle, [nil]);
642		end;
643
644		procedure TIBSQL.Close;
2193	–	var
2194	–	isc_res: ISC_STATUS;
645		begin
646	<	try
647	<	if (FHandle <> nil) and (SQLType = SQLSelect) and FOpen then begin
648	<	isc_res := Call(
649	<	isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
650	<	False);
651	<	if (StatusVector^ = 1) and (isc_res > 0) and
652	<	not CheckStatusVector(
2203	<	[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
2204	<	IBDatabaseError;
2205	<	end;
2206	<	finally
2207	<	FEOF := False;
2208	<	FBOF := False;
2209	<	FOpen := False;
2210	<	FRecordCount := 0;
2211	<	end;
646	>	if FResults <> nil then
647	>	FResults.SetRetainInterfaces(false);
648	>	FResultSet := nil;
649	>	FResults := nil;
650	>	FBOF := false;
651	>	FEOF := false;
652	>	FRecordCount := 0;
653		end;
654
655	<	function TIBSQL.Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
655	>	function TIBSQL.GetFieldCount: integer;
656		begin
657	<	result := 0;
658	<	if Transaction <> nil then
2218	<	result := Transaction.Call(ErrCode, RaiseError)
657	>	if FResults <> nil then
658	>	Result := FResults.GetCount
659		else
660	<	if RaiseError and (ErrCode > 0) then
661	<	IBDataBaseError;
660	>	if FMetaData <> nil then
661	>	Result := FMetaData.GetCount
662	>	else
663	>	Result := 0;
664		end;
665
666	<	function TIBSQL.Current: TIBXSQLDA;
666	>	function TIBSQL.GetOpen: Boolean;
667		begin
668	<	result := FSQLRecord;
668	>	Result := FResultSet <> nil;
669		end;
670
671	<	function TIBSQL.GetFieldCount: integer;
671	>	function TIBSQL.GetPrepared: Boolean;
672		begin
673	<	Result := FSQLRecord.Count
673	>	Result := (FStatement <> nil) and FStatement.IsPrepared;
674	>	end;
675	>
676	>	function TIBSQL.GetSQLStatementType: TIBSQLStatementTypes;
677	>	begin
678	>	if FStatement = nil then
679	>	Result := SQLUnknown
680	>	else
681	>	Result := FStatement.GetSQLStatementType;
682		end;
683
684		procedure TIBSQL.SetUniqueParamNames(AValue: Boolean);
#	Line 2240 | Line 690 | end;
690
691		procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
692		begin
693	<	if (FHandle <> nil) then begin
2244	<	Close;
2245	<	FreeHandle;
2246	<	end;
693	>	FreeHandle;
694		end;
695
696		procedure TIBSQL.ExecQuery;
697		var
698		fetch_res: ISC_STATUS;
699	+	{$IFDEF IBXQUERYSTATS}
700	+	stats: TPerfCounters;
701	+	{$ENDIF}
702	+	{$IFDEF IBXQUERYTIME}
703	+	tmsecs: comp;
704	+	{$ENDIF}
705		begin
706		CheckClosed;
707		if not Prepared then Prepare;
708		CheckValidStatement;
709	<	case FSQLType of
710	<	SQLSelect: begin
711	<	Call(isc_dsql_execute2(StatusVector,
712	<	TRHandle,
713	<	@FHandle,
714	<	Database.SQLDialect,
715	<	FSQLParams.AsXSQLDA,
716	<	nil), True);
717	<	Call(
718	<	isc_dsql_set_cursor_name(StatusVector, @FHandle, PChar(FCursor), 0),
719	<	True);
720	<	FOpen := True;
721	<	FBOF := True;
722	<	FEOF := False;
723	<	FRecordCount := 0;
724	<	if FGoToFirstRecordOnExecute then
725	<	Next;
726	<	end;
727	<	SQLExecProcedure: begin
728	<	fetch_res := Call(isc_dsql_execute2(StatusVector,
729	<	TRHandle,
2277	<	@FHandle,
2278	<	Database.SQLDialect,
2279	<	FSQLParams.AsXSQLDA,
2280	<	FSQLRecord.AsXSQLDA), True);
2281	<	(*      if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
2282	<	begin
2283	<	{ Sometimes a prepared stored procedure appears to get
2284	<	off sync on the server ....This code is meant to try
2285	<	to work around the problem simply by "retrying". This
2286	<	need to be reproduced and fixed.
2287	<	}
2288	<	isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
2289	<	PChar(FProcessedSQL.Text), 1, nil);
2290	<	Call(isc_dsql_execute2(StatusVector,
2291	<	TRHandle,
2292	<	@FHandle,
2293	<	Database.SQLDialect,
2294	<	FSQLParams.AsXSQLDA,
2295	<	FSQLRecord.AsXSQLDA), True);
2296	<	end;  *)
2297	<	end
2298	<	else
2299	<	Call(isc_dsql_execute(StatusVector,
2300	<	TRHandle,
2301	<	@FHandle,
2302	<	Database.SQLDialect,
2303	<	FSQLParams.AsXSQLDA), True)
709	>	{$IFDEF IBXQUERYTIME}
710	>	tmsecs := TimeStampToMSecs(DateTimeToTimeStamp(Now));
711	>	{$ENDIF}
712	>	if SQLStatementType = SQLSelect then
713	>	begin
714	>	FResultSet := FStatement.OpenCursor;
715	>	FResults := FResultSet;
716	>	FResults.SetRetainInterfaces(true);
717	>	FBOF := True;
718	>	FEOF := False;
719	>	FRecordCount := 0;
720	>	if not (csDesigning in ComponentState) then
721	>	MonitorHook.SQLExecute(Self);
722	>	if FGoToFirstRecordOnExecute then
723	>	Next;
724	>	end
725	>	else
726	>	begin
727	>	FResults := FStatement.Execute;
728	>	if not (csDesigning in ComponentState) then
729	>	MonitorHook.SQLExecute(Self);
730		end;
731	<	if not (csDesigning in ComponentState) then
732	<	MonitorHook.SQLExecute(Self);
731	>	{$IFDEF IBXQUERYTIME}
732	>	writeln('Executing ',FStatement.GetSQLText,
733	>	' Response time= ',Format('%f msecs',[TimeStampToMSecs(DateTimeToTimeStamp(Now)) - tmsecs]));
734	>	{$ENDIF}
735	>	{$IFDEF IBXQUERYSTATS}
736	>	if FStatement.GetPerfStatistics(stats) then
737	>	writeln('Executing ',FStatement.GetSQLText,
738	>	' Elapsed time= ', FormatFloat('#0.000',stats[psRealTime]/1000),' sec');
739	>	{$ENDIF}
740	>	FBase.DoAfterExecQuery(self);
741	>	end;
742	>
743	>	function TIBSQL.HasField(FieldName: String): boolean;
744	>	begin
745	>	if FResults = nil then
746	>	IBError(ibxeNoFieldAccess,[nil]);
747	>
748	>	Result := FResults.ByName(FieldName) <> nil;
749		end;
750
751		function TIBSQL.GetEOF: Boolean;
752		begin
753	<	result := FEOF or not FOpen;
753	>	result := FEOF or (FResultSet = nil);
754		end;
755
756	<	function TIBSQL.FieldByName(FieldName: String): TIBXSQLVAR;
2315	<	var
2316	<	i: Integer;
756	>	function TIBSQL.FieldByName(FieldName: String): ISQLData;
757		begin
758	<	i := GetFieldIndex(FieldName);
759	<	if (i < 0) then
758	>	if FResults = nil then
759	>	IBError(ibxeNoFieldAccess,[nil]);
760	>
761	>	Result := FResults.ByName(FieldName);
762	>
763	>	if Result = nil then
764		IBError(ibxeFieldNotFound, [FieldName]);
2321	–	result := GetFields(i);
765		end;
766
767	<	function TIBSQL.ParamByName(ParamName: String): TIBXSQLVAR;
767	>	function TIBSQL.ParamByName(ParamName: String): ISQLParam;
768		begin
769		Result := Params.ByName(ParamName);
770		end;
771
772	<	function TIBSQL.GetFields(const Idx: Integer): TIBXSQLVAR;
772	>	function TIBSQL.GetFields(const Idx: Integer): ISQLData;
773		begin
774	<	if (Idx < 0) or (Idx >= FSQLRecord.Count) then
774	>	if FResults = nil then
775	>	IBError(ibxeNoFieldAccess,[nil]);
776	>
777	>	if (Idx < 0) or (Idx >= FResults.GetCount) then
778		IBError(ibxeFieldNotFound, [IntToStr(Idx)]);
779	<	result := FSQLRecord[Idx];
779	>	result := FResults[Idx];
780		end;
781
782		function TIBSQL.GetFieldIndex(FieldName: String): Integer;
783	+	var Field: IColumnMetaData;
784		begin
785	<	if (FSQLRecord.GetXSQLVarByName(FieldName) = nil) then
785	>	if FMetaData = nil then
786	>	IBError(ibxeNoFieldAccess,[nil]);
787	>
788	>	Field := FMetaData.ByName(FieldName);
789	>
790	>	if Field = nil then
791		result := -1
792		else
793	<	result := FSQLRecord.GetXSQLVarByName(FieldName).Index;
793	>	result := Field.GetIndex;
794		end;
795
796	<	function TIBSQL.Next: TIBXSQLDA;
2345	<	var
2346	<	fetch_res: ISC_STATUS;
796	>	function TIBSQL.Next: boolean;
797		begin
798	<	result := nil;
799	<	if not FEOF then begin
798	>	result := false;
799	>	if not FEOF then
800	>	begin
801		CheckOpen;
802	<	{ Go to the next record... }
803	<	fetch_res :=
804	<	Call(isc_dsql_fetch(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.AsXSQLDA), False);
805	<	if (fetch_res = 100) or (CheckStatusVector([isc_dsql_cursor_err])) then begin
806	<	FEOF := True;
807	<	end else if (fetch_res > 0) then begin
808	<	try
809	<	IBDataBaseError;
810	<	except
2360	<	Close;
2361	<	raise;
2362	<	end;
2363	<	end else begin
802	>	try
803	>	Result := FResultSet.FetchNext;
804	>	except
805	>	Close;
806	>	raise;
807	>	end;
808	>
809	>	if Result then
810	>	begin
811		Inc(FRecordCount);
812		FBOF := False;
813	<	result := FSQLRecord;
814	<	end;
813	>	end
814	>	else
815	>	FEOF := true;
816	>
817		if not (csDesigning in ComponentState) then
818		MonitorHook.SQLFetch(Self);
819		end;
820		end;
821
822		procedure TIBSQL.FreeHandle;
2374	–	var
2375	–	isc_res: ISC_STATUS;
823		begin
824	<	try
825	<	{ The following two lines merely set the SQLDA count
826	<	variable FCount to 0, but do not deallocate
827	<	That way the allocations can be reused for
828	<	a new query sring in the same SQL instance }
829	<	FSQLRecord.Count := 0;
830	<	FSQLParams.Count := 0;
831	<	if FHandle <> nil then begin
2385	<	isc_res :=
2386	<	Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
2387	<	if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
2388	<	IBDataBaseError;
2389	<	end;
2390	<	finally
2391	<	FPrepared := False;
2392	<	FHandle := nil;
2393	<	end;
824	>	if FStatement <> nil then
825	>	FStatement.SetRetainInterfaces(false);
826	>	Close;
827	>	FStatement := nil;
828	>	FResults := nil;
829	>	FResultSet := nil;
830	>	FMetaData := nil;
831	>	FSQLParams := nil;
832		end;
833
834		function TIBSQL.GetDatabase: TIBDatabase;
#	Line 2398 | Line 836 | begin
836		result := FBase.Database;
837		end;
838
2401	–	function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
2402	–	begin
2403	–	result := FBase.DBHandle;
2404	–	end;
2405	–
839		function TIBSQL.GetPlan: String;
2407	–	var
2408	–	result_buffer: array[0..16384] of Char;
2409	–	result_length, i: Integer;
2410	–	info_request: Char;
840		begin
841		if (not Prepared) or
842	<	(not (FSQLType in [SQLSelect, SQLSelectForUpdate,
842	>	(not (GetSQLStatementType in [SQLSelect, SQLSelectForUpdate,
843		{TODO: SQLExecProcedure, }
844		SQLUpdate, SQLDelete])) then
845		result := ''
846	<	else begin
847	<	info_request := Char(isc_info_sql_get_plan);
2419	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
2420	<	SizeOf(result_buffer), result_buffer), True);
2421	<	if (result_buffer[0] <> Char(isc_info_sql_get_plan)) then
2422	<	IBError(ibxeUnknownError, [nil]);
2423	<	result_length := isc_vax_integer(@result_buffer[1], 2);
2424	<	SetString(result, nil, result_length);
2425	<	for i := 1 to result_length do
2426	<	result[i] := result_buffer[i + 2];
2427	<	result := Trim(result);
2428	<	end;
846	>	else
847	>	Result := FStatement.GetPlan;
848		end;
849
850		function TIBSQL.GetRecordCount: Integer;
851		begin
852	<	result := FRecordCount;
852	>	Result := FRecordCount;
853		end;
854
855		function TIBSQL.GetRowsAffected: Integer;
856		var
857	<	result_buffer: array[0..1048] of Char;
2439	<	info_request: Char;
857	>	SelectCount, InsertCount, UpdateCount, DeleteCount: integer;
858		begin
859		if not Prepared then
860	<	result := -1
861	<	else begin
862	<	info_request := Char(isc_info_sql_records);
863	<	if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
864	<	SizeOf(result_buffer), result_buffer) > 0 then
2447	<	IBDatabaseError;
2448	<	if (result_buffer[0] <> Char(isc_info_sql_records)) then
2449	<	result := -1
2450	<	else
2451	<	case SQLType of
2452	<	SQLUpdate:   Result := isc_vax_integer(@result_buffer[6], 4);
2453	<	SQLDelete:   Result := isc_vax_integer(@result_buffer[13], 4);
2454	<	SQLInsert:   Result := isc_vax_integer(@result_buffer[27], 4);
2455	<	else         Result := -1 ;
2456	<	end ;
860	>	Result := -1
861	>	else
862	>	begin
863	>	FStatement.GetRowsAffected(SelectCount, InsertCount, UpdateCount, DeleteCount);
864	>	Result := InsertCount + UpdateCount + DeleteCount;
865		end;
866		end;
867
868	<	function TIBSQL.GetSQLParams: TIBXSQLDA;
868	>	function TIBSQL.GetSQLParams: ISQLParams;
869		begin
870		if not Prepared then
871		Prepare;
872	<	result := FSQLParams;
872	>	result := Statement.SQLParams;
873		end;
874
875		function TIBSQL.GetTransaction: TIBTransaction;
#	Line 2469 | Line 877 | begin
877		result := FBase.Transaction;
878		end;
879
2472	–	function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
2473	–	begin
2474	–	result := FBase.TRHandle;
2475	–	end;
2476	–
2477	–	{
2478	–	Preprocess SQL
2479	–	Using FSQL, process the typed SQL and put the process SQL
2480	–	in FProcessedSQL and parameter names in FSQLParams
2481	–	}
2482	–	procedure TIBSQL.PreprocessSQL;
2483	–	var
2484	–	cCurChar, cNextChar, cQuoteChar: Char;
2485	–	sSQL, sProcessedSQL, sParamName: String;
2486	–	i, iLenSQL, iSQLPos: Integer;
2487	–	iCurState {$ifdef ALLOWDIALECT3PARAMNAMES}, iCurParamState {$endif}: Integer;
2488	–	iParamSuffix: Integer;
2489	–	slNames: TStrings;
2490	–
2491	–	const
2492	–	DefaultState = 0;
2493	–	CommentState = 1;
2494	–	QuoteState = 2;
2495	–	ParamState = 3;
2496	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2497	–	ParamDefaultState = 0;
2498	–	ParamQuoteState = 1;
2499	–	{$endif}
2500	–
2501	–	procedure AddToProcessedSQL(cChar: Char);
2502	–	begin
2503	–	sProcessedSQL[iSQLPos] := cChar;
2504	–	Inc(iSQLPos);
2505	–	end;
2506	–
2507	–	begin
2508	–	slNames := TStringList.Create;
2509	–	try
2510	–	{ Do some initializations of variables }
2511	–	iParamSuffix := 0;
2512	–	cQuoteChar := '''';
2513	–	sSQL := FSQL.Text;
2514	–	iLenSQL := Length(sSQL);
2515	–	SetString(sProcessedSQL, nil, iLenSQL + 1);
2516	–	i := 1;
2517	–	iSQLPos := 1;
2518	–	iCurState := DefaultState;
2519	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2520	–	iCurParamState := ParamDefaultState;
2521	–	{$endif}
2522	–	{ Now, traverse through the SQL string, character by character,
2523	–	picking out the parameters and formatting correctly for InterBase }
2524	–	while (i <= iLenSQL) do begin
2525	–	{ Get the current token and a look-ahead }
2526	–	cCurChar := sSQL[i];
2527	–	if i = iLenSQL then
2528	–	cNextChar := #0
2529	–	else
2530	–	cNextChar := sSQL[i + 1];
2531	–	{ Now act based on the current state }
2532	–	case iCurState of
2533	–	DefaultState: begin
2534	–	case cCurChar of
2535	–	'''', '"': begin
2536	–	cQuoteChar := cCurChar;
2537	–	iCurState := QuoteState;
2538	–	end;
2539	–	'?', ':': begin
2540	–	iCurState := ParamState;
2541	–	AddToProcessedSQL('?');
2542	–	end;
2543	–	'/': if (cNextChar = '*') then begin
2544	–	AddToProcessedSQL(cCurChar);
2545	–	Inc(i);
2546	–	iCurState := CommentState;
2547	–	end;
2548	–	end;
2549	–	end;
2550	–	CommentState: begin
2551	–	if (cNextChar = #0) then
2552	–	IBError(ibxeSQLParseError, [SEOFInComment])
2553	–	else if (cCurChar = '*') then begin
2554	–	if (cNextChar = '/') then
2555	–	iCurState := DefaultState;
2556	–	end;
2557	–	end;
2558	–	QuoteState: begin
2559	–	if cNextChar = #0 then
2560	–	IBError(ibxeSQLParseError, [SEOFInString])
2561	–	else if (cCurChar = cQuoteChar) then begin
2562	–	if (cNextChar = cQuoteChar) then begin
2563	–	AddToProcessedSQL(cCurChar);
2564	–	Inc(i);
2565	–	end else
2566	–	iCurState := DefaultState;
2567	–	end;
2568	–	end;
2569	–	ParamState:
2570	–	begin
2571	–	{ collect the name of the parameter }
2572	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2573	–	if iCurParamState = ParamDefaultState then
2574	–	begin
2575	–	if cCurChar = '"' then
2576	–	iCurParamState := ParamQuoteState
2577	–	else
2578	–	{$endif}
2579	–	if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
2580	–	sParamName := sParamName + cCurChar
2581	–	else if FGenerateParamNames then
2582	–	begin
2583	–	sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
2584	–	Inc(iParamSuffix);
2585	–	iCurState := DefaultState;
2586	–	slNames.AddObject(sParamName,self); //Note local convention
2587	–	//add pointer to self to mark entry
2588	–	sParamName := '';
2589	–	end
2590	–	else
2591	–	IBError(ibxeSQLParseError, [SParamNameExpected]);
2592	–	{$ifdef ALLOWDIALECT3PARAMNAMES}
2593	–	end
2594	–	else begin
2595	–	{ determine if Quoted parameter name is finished }
2596	–	if cCurChar = '"' then
2597	–	begin
2598	–	Inc(i);
2599	–	slNames.Add(sParamName);
2600	–	SParamName := '';
2601	–	iCurParamState := ParamDefaultState;
2602	–	iCurState := DefaultState;
2603	–	end
2604	–	else
2605	–	sParamName := sParamName + cCurChar
2606	–	end;
2607	–	{$endif}
2608	–	{ determine if the unquoted parameter name is finished }
2609	–	if {$ifdef ALLOWDIALECT3PARAMNAMES}(iCurParamState <> ParamQuoteState) and {$endif}
2610	–	(iCurState <> DefaultState) then
2611	–	begin
2612	–	if not (cNextChar in ['A'..'Z', 'a'..'z',
2613	–	'0'..'9', '_', '$']) then begin
2614	–	Inc(i);
2615	–	iCurState := DefaultState;
2616	–	slNames.Add(sParamName);
2617	–	sParamName := '';
2618	–	end;
2619	–	end;
2620	–	end;
2621	–	end;
2622	–	if iCurState <> ParamState then
2623	–	AddToProcessedSQL(sSQL[i]);
2624	–	Inc(i);
2625	–	end;
2626	–	AddToProcessedSQL(#0);
2627	–	FSQLParams.Count := slNames.Count;
2628	–	for i := 0 to slNames.Count - 1 do
2629	–	FSQLParams.SetParamName(slNames[i], i,FUniqueParamNames or (slNames.Objects[i] <> nil));
2630	–	FProcessedSQL.Text := sProcessedSQL;
2631	–	finally
2632	–	slNames.Free;
2633	–	end;
2634	–	end;
2635	–
880		procedure TIBSQL.SetDatabase(Value: TIBDatabase);
881		begin
882	+	if Value = FBase.Database then Exit;
883		FBase.Database := Value;
884	+	FreeHandle;
885		end;
886
887		procedure TIBSQL.Prepare;
2642	–	var
2643	–	stmt_len: Integer;
2644	–	res_buffer: array[0..7] of Char;
2645	–	type_item: Char;
888		begin
889		CheckClosed;
890		FBase.CheckDatabase;
891		FBase.CheckTransaction;
892	<	if FPrepared then
892	>	Close;
893	>	if Prepared then
894		exit;
895		if (FSQL.Text = '') then
896		IBError(ibxeEmptyQuery, [nil]);
897	+
898	+	if FStatement <> nil then
899	+	FStatement.Prepare(Transaction.TransactionIntf)
900	+	else
901		if not ParamCheck then
902	<	FProcessedSQL.Text := FSQL.Text
902	>	FStatement := Database.Attachment.Prepare(Transaction.TransactionIntf,SQL.Text)
903		else
904	<	PreprocessSQL;
905	<	if (FProcessedSQL.Text = '') then
906	<	IBError(ibxeEmptyQuery, [nil]);
907	<	try
908	<	Call(isc_dsql_alloc_statement2(StatusVector, DBHandle,
909	<	@FHandle), True);
910	<	Call(isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
911	<	PChar(FProcessedSQL.Text), Database.SQLDialect, nil), True);
912	<	{ After preparing the statement, query the stmt type and possibly
913	<	create a FSQLRecord "holder" }
914	<	{ Get the type of the statement }
2668	<	type_item := Char(isc_info_sql_stmt_type);
2669	<	Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
2670	<	SizeOf(res_buffer), res_buffer), True);
2671	<	if (res_buffer[0] <> Char(isc_info_sql_stmt_type)) then
2672	<	IBError(ibxeUnknownError, [nil]);
2673	<	stmt_len := isc_vax_integer(@res_buffer[1], 2);
2674	<	FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
2675	<	{ Done getting the type }
2676	<	case FSQLType of
2677	<	SQLGetSegment,
2678	<	SQLPutSegment,
2679	<	SQLStartTransaction: begin
2680	<	FreeHandle;
2681	<	IBError(ibxeNotPermitted, [nil]);
2682	<	end;
2683	<	SQLCommit,
2684	<	SQLRollback,
2685	<	SQLDDL, SQLSetGenerator,
2686	<	SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
2687	<	SQLExecProcedure: begin
2688	<	{ We already know how many inputs there are, so... }
2689	<	if (FSQLParams.FXSQLDA <> nil) and
2690	<	(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
2691	<	FSQLParams.FXSQLDA), False) > 0) then
2692	<	IBDataBaseError;
2693	<	FSQLParams.Initialize;
2694	<	if FSQLType in [SQLSelect, SQLSelectForUpdate,
2695	<	SQLExecProcedure] then begin
2696	<	{ Allocate an initial output descriptor (with one column) }
2697	<	FSQLRecord.Count := 1;
2698	<	{ Using isc_dsql_describe, get the right size for the columns... }
2699	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2700	<	if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
2701	<	FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
2702	<	Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
2703	<	end else if FSQLRecord.FXSQLDA^.sqld = 0 then
2704	<	FSQLRecord.Count := 0;
2705	<	FSQLRecord.Initialize;
2706	<	end;
2707	<	end;
2708	<	end;
2709	<	FPrepared := True;
2710	<	if not (csDesigning in ComponentState) then
904	>	FStatement := Database.Attachment.PrepareWithNamedParameters(
905	>	Transaction.TransactionIntf,
906	>	SQL.Text,
907	>	GenerateParamNames);
908	>	{$IFDEF IBXQUERYSTATS}
909	>	FStatement.EnableStatistics(true);
910	>	{$ENDIF}
911	>	FMetaData := FStatement.GetMetaData;
912	>	FSQLParams := FStatement.GetSQLParams;
913	>	FStatement.SetRetainInterfaces(true);
914	>	if not (csDesigning in ComponentState) then
915		MonitorHook.SQLPrepare(Self);
2712	–	except
2713	–	on E: Exception do begin
2714	–	if (FHandle <> nil) then
2715	–	FreeHandle;
2716	–	if E is EIBInterBaseError then
2717	–	raise EIBInterBaseError.Create(EIBInterBaseError(E).SQLCode,
2718	–	EIBInterBaseError(E).IBErrorCode,
2719	–	EIBInterBaseError(E).Message +
2720	–	sSQLErrorSeparator + FProcessedSQL.Text)
2721	–	else
2722	–	raise;
2723	–	end;
2724	–	end;
916		end;
917
918		function TIBSQL.GetUniqueRelationName: String;
919		begin
920	<	if FPrepared and (FSQLType = SQLSelect) then
921	<	result := FSQLRecord.UniqueRelationName
920	>	if Prepared and (GetSQLStatementType = SQLSelect) then
921	>	result := FMetaData.GetUniqueRelationName
922		else
923		result := '';
924		end;
#	Line 2754 | Line 945 | procedure TIBSQL.SQLChanging(Sender: TOb
945		begin
946		if Assigned(OnSQLChanging) then
947		OnSQLChanging(Self);
948	<	if FHandle <> nil then FreeHandle;
948	>
949	>	FreeHandle;
950		end;
951
952	<	procedure TIBSQL.BeforeTransactionEnd(Sender: TObject);
952	>	procedure TIBSQL.SQLChanged(Sender: TObject);
953		begin
954	<	if (FOpen) then
955	<	Close;
954	>	if assigned(OnSQLChanged) then
955	>	OnSQLChanged(self);
956	>	end;
957	>
958	>	procedure TIBSQL.BeforeTransactionEnd(Sender: TObject;
959	>	Action: TTransactionAction);
960	>	begin
961	>	if not (Owner is TIBCustomDataSet) then
962	>	FreeHandle;
963		end;
964
965		end.

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