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root/public/ibx/branches/journaling/fbintf/client/FBStatement.pas

Comparing ibx/trunk/fbintf/client/FBStatement.pas (file contents):
Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC vs.
Revision 270 by tony, Fri Jan 18 11:10:37 2019 UTC

#	Line 28 | Line 28
28		*
29		*)
30		unit FBStatement;
31	+	{$IFDEF MSWINDOWS}
32	+	{$DEFINE WINDOWS}
33	+	{$ENDIF}
34
35		{$IFDEF FPC}
36	<	{$mode objfpc}{$H+}
36	>	{$mode delphi}
37		{$codepage UTF8}
38		{$interfaces COM}
39		{$ENDIF}
#	Line 42 | Line 45 | uses
45		FBTransaction;
46
47		type
48	+	TPerfStatistics = array[psCurrentMemory..psFetches] of Int64;
49
50		{ TFBStatement }
51
52		TFBStatement = class(TActivityReporter)
53		private
54		FAttachmentIntf: IAttachment;
55	+	FFirebirdClientAPI: TFBClientAPI;
56		protected
57		FTransactionIntf: ITransaction;
58		FExecTransactionIntf: ITransaction;
#	Line 56 | Line 61 | type
61		FOpen: boolean;
62		FPrepared: boolean;
63		FPrepareSeqNo: integer; {used to check for out of date references from interfaces}
64	<	FSQL: string;
65	<	FProcessedSQL: string;
64	>	FSQL: AnsiString;
65	>	FProcessedSQL: AnsiString;
66		FHasParamNames: boolean;
67		FBOF: boolean;
68		FEOF: boolean;
69		FSingleResults: boolean;
70		FGenerateParamNames: boolean;
71		FChangeSeqNo: integer;
72	+	FCollectStatistics: boolean;
73	+	FStatisticsAvailable: boolean;
74	+	FBeforeStats: TPerfStatistics;
75	+	FAfterStats: TPerfStatistics;
76	+	FCaseSensitiveParams: boolean;
77		procedure CheckHandle; virtual; abstract;
78		procedure CheckTransaction(aTransaction: ITransaction);
79		procedure GetDsqlInfo(info_request: byte; buffer: ISQLInfoResults); overload; virtual; abstract;
80		procedure InternalPrepare;  virtual; abstract;
81		function InternalExecute(aTransaction: ITransaction): IResults;  virtual; abstract;
82		function InternalOpenCursor(aTransaction: ITransaction): IResultSet;   virtual; abstract;
83	+	procedure ProcessSQL(sql: AnsiString; GenerateParamNames: boolean; var processedSQL: AnsiString); virtual; abstract;
84		procedure FreeHandle;  virtual; abstract;
85		procedure InternalClose(Force: boolean); virtual; abstract;
86	+	function TimeStampToMSecs(const TimeStamp: TTimeStamp): Int64;
87		public
88		constructor Create(Attachment: IAttachment; Transaction: ITransaction;
89	<	sql: string; SQLDialect: integer);
89	>	sql: AnsiString; SQLDialect: integer);
90		constructor CreateWithParameterNames(Attachment: IAttachment; Transaction: ITransaction;
91	<	sql: string;  SQLDialect: integer; GenerateParamNames: boolean =false);
91	>	sql: AnsiString;  SQLDialect: integer; GenerateParamNames: boolean =false;
92	>	CaseSensitiveParams: boolean = false);
93		destructor Destroy; override;
94		procedure Close;
95		procedure TransactionEnding(aTransaction: ITransaction; Force: boolean);
96		property SQLDialect: integer read FSQLDialect;
97	+	property FirebirdClientAPI: TFBClientAPI read FFirebirdClientAPI;
98
99		public
100		function GetSQLParams: ISQLParams; virtual; abstract;
#	Line 88 | Line 102 | type
102		function GetRowsAffected(var SelectCount, InsertCount, UpdateCount,
103		DeleteCount: integer): boolean;
104		function GetSQLStatementType: TIBSQLStatementTypes;
105	<	function GetSQLText: string;
105	>	function GetSQLText: AnsiString;
106	>	function GetProcessedSQLText: AnsiString;
107		function GetSQLDialect: integer;
108
109		{GetDSQLInfo only supports isc_info_sql_stmt_type, isc_info_sql_get_plan, isc_info_sql_records}
110		procedure Prepare(aTransaction: ITransaction=nil); virtual;
111		function Execute(aTransaction: ITransaction=nil): IResults;
112		function OpenCursor(aTransaction: ITransaction=nil): IResultSet;
113	<	function CreateBlob(paramName: string): IBlob; overload;
113	>	function CreateBlob(paramName: AnsiString): IBlob; overload;
114		function CreateBlob(index: integer): IBlob; overload;
115		function CreateBlob(column: TColumnMetaData): IBlob; overload; virtual; abstract;
116	<	function CreateArray(paramName: string): IArray; overload;
116	>	function CreateArray(paramName: AnsiString): IArray; overload;
117		function CreateArray(index: integer): IArray;  overload;
118		function CreateArray(column: TColumnMetaData): IArray; overload; virtual; abstract;
119		function GetAttachment: IAttachment;
120		function GetTransaction: ITransaction;
121		function GetDSQLInfo(Request: byte): ISQLInfoResults; overload;
122		procedure SetRetainInterfaces(aValue: boolean); virtual;
123	+	procedure EnableStatistics(aValue: boolean);
124	+	function GetPerfStatistics(var stats: TPerfCounters): boolean;
125		property ChangeSeqNo: integer read FChangeSeqNo;
126		property SQLParams: ISQLParams read GetSQLParams;
127		property SQLStatementType: TIBSQLStatementTypes read GetSQLStatementType;
#	Line 125 | Line 142 | begin
142		IBError(ibxeNotInTransaction,[]);
143		end;
144
145	+	function TFBStatement.TimeStampToMSecs(const TimeStamp: TTimeStamp): Int64;
146	+	begin
147	+	Result := TimeStamp.Time + Int64(timestamp.date)*msecsperday;
148	+	end;
149	+
150		constructor TFBStatement.Create(Attachment: IAttachment;
151	<	Transaction: ITransaction; sql: string; SQLDialect: integer);
151	>	Transaction: ITransaction; sql: AnsiString; SQLDialect: integer);
152		begin
153		inherited Create(Transaction as TFBTransaction,2);
154		FAttachmentIntf := Attachment;
155		FTransactionIntf := Transaction;
156	+	FFirebirdClientAPI := Attachment.getFirebirdAPI as TFBClientAPI;
157		FSQLDialect := SQLDialect;
158		FSQL := sql;
159		end;
160
161		constructor TFBStatement.CreateWithParameterNames(Attachment: IAttachment;
162	<	Transaction: ITransaction; sql: string; SQLDialect: integer;
163	<	GenerateParamNames: boolean);
162	>	Transaction: ITransaction; sql: AnsiString; SQLDialect: integer;
163	>	GenerateParamNames: boolean; CaseSensitiveParams: boolean);
164		begin
165		FHasParamNames := true;
166		FGenerateParamNames := GenerateParamNames;
167	+	FCaseSensitiveParams := CaseSensitiveParams;
168		Create(Attachment,Transaction,sql,SQLDialect);
169		end;
170
#	Line 207 | Line 231 | begin
231		Result := FSQLStatementType;
232		end;
233
234	<	function TFBStatement.GetSQLText: string;
234	>	function TFBStatement.GetSQLText: AnsiString;
235		begin
236		Result := FSQL;
237		end;
238
239	+	function TFBStatement.GetProcessedSQLText: AnsiString;
240	+	begin
241	+	if FProcessedSQL = '' then
242	+	ProcessSQL(FSQL,FGenerateParamNames,FProcessedSQL);
243	+	Result := FProcessedSQL
244	+	end;
245	+
246		function TFBStatement.GetSQLDialect: integer;
247		begin
248		Result := FSQLDialect;
#	Line 246 | Line 277 | begin
277		Result := InternalOpenCursor(aTransaction);
278		end;
279
280	<	function TFBStatement.CreateBlob(paramName: string): IBlob;
280	>	function TFBStatement.CreateBlob(paramName: AnsiString): IBlob;
281		var column: TColumnMetaData;
282		begin
283		InternalPrepare;
#	Line 262 | Line 293 | begin
293		Result := CreateBlob(SQLParams[index] as TSQLParam);
294		end;
295
296	<	function TFBStatement.CreateArray(paramName: string): IArray;
296	>	function TFBStatement.CreateArray(paramName: AnsiString): IArray;
297		var column: TColumnMetaData;
298		begin
299		InternalPrepare;
#	Line 290 | Line 321 | end;
321
322		function TFBStatement.GetDSQLInfo(Request: byte): ISQLInfoResults;
323		begin
324	<	Result := TSQLInfoResultsBuffer.Create;
324	>	Result := TSQLInfoResultsBuffer.Create(FFirebirdClientAPI);
325		GetDsqlInfo(Request,Result);
326		end;
327
#	Line 299 | Line 330 | begin
330		RetainInterfaces := aValue;
331		end;
332
333	+	procedure TFBStatement.EnableStatistics(aValue: boolean);
334	+	begin
335	+	if FCollectStatistics <> aValue then
336	+	begin
337	+	FCollectStatistics := aValue;
338	+	FStatisticsAvailable := false;
339	+	end;
340	+	end;
341	+
342	+	function TFBStatement.GetPerfStatistics(var stats: TPerfCounters): boolean;
343	+	begin
344	+	Result := FStatisticsAvailable;
345	+	if Result then
346	+	begin
347	+	stats[psCurrentMemory] := FAfterStats[psCurrentMemory];
348	+	stats[psDeltaMemory] := FAfterStats[psCurrentMemory] - FBeforeStats[psCurrentMemory];
349	+	stats[psMaxMemory] := FAfterStats[psMaxMemory];
350	+	stats[psRealTime] :=  FAfterStats[psRealTime] - FBeforeStats[psRealTime];
351	+	stats[psUserTime] :=  FAfterStats[psUserTime] - FBeforeStats[psUserTime];
352	+	stats[psReads] := FAfterStats[psReads] - FBeforeStats[psReads];
353	+	stats[psWrites] := FAfterStats[psWrites] - FBeforeStats[psWrites];
354	+	stats[psFetches] := FAfterStats[psFetches] - FBeforeStats[psFetches];
355	+	stats[psBuffers] :=  FAfterStats[psBuffers];
356	+	end;
357	+	end;
358	+
359		end.
360

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