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root/public/ibx/trunk/fbintf/client/FBAttachment.pas
Revision: 109
Committed: Thu Jan 18 14:37:48 2018 UTC (6 years, 3 months ago) by tony
Content type: text/x-pascal
File size: 26030 byte(s)
Log Message: 
Fixes Merged

File Contents

# User Rev Content
1 tony 45 (*
2     * Firebird Interface (fbintf). The fbintf components provide a set of
3     * Pascal language bindings for the Firebird API.
4     *
5     * The contents of this file are subject to the Initial Developer's
6     * Public License Version 1.0 (the "License"); you may not use this
7     * file except in compliance with the License. You may obtain a copy
8     * of the License here:
9     *
10     * http://www.firebirdsql.org/index.php?op=doc&id=idpl
11     *
12     * Software distributed under the License is distributed on an "AS
13     * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14     * implied. See the License for the specific language governing rights
15     * and limitations under the License.
16     *
17     * The Initial Developer of the Original Code is Tony Whyman.
18     *
19     * The Original Code is (C) 2016 Tony Whyman, MWA Software
20     * (http://www.mwasoftware.co.uk).
21     *
22     * All Rights Reserved.
23     *
24     * Contributor(s): ______________________________________.
25     *
26     *)
27     unit FBAttachment;
28 tony 56 {$IFDEF MSWINDOWS}
29     {$DEFINE WINDOWS}
30     {$ENDIF}
31 tony 45
32     {$IFDEF FPC}
33 tony 56 {$mode delphi}
34 tony 45 {$interfaces COM}
35     {$ENDIF}
36    
37     interface
38    
39     uses
40 tony 60 Classes, SysUtils, {$IFDEF WINDOWS} windows, {$ENDIF} IB, FBParamBlock, FBActivityMonitor;
41 tony 45
42     type
43 tony 60 TCharsetMap = record
44     CharsetID: integer;
45     CharSetName: AnsiString;
46     CharSetWidth: integer;
47     CodePage: TSystemCodePage;
48     AllowReverseLookup: boolean; {used to ensure that lookup of CP_UTF* does not return UNICODE_FSS}
49     end;
50 tony 45
51     { TFBAttachment }
52    
53     TFBAttachment = class(TActivityHandler)
54     private
55     FDPB: IDPB;
56     FFirebirdAPI: IFirebirdAPI;
57 tony 60 FUserCharSetMap: array of TCharSetMap;
58 tony 45 protected
59 tony 56 FDatabaseName: AnsiString;
60 tony 45 FRaiseExceptionOnConnectError: boolean;
61     FSQLDialect: integer;
62     FHasDefaultCharSet: boolean;
63     FCharSetID: integer;
64     FCodePage: TSystemCodePage;
65 tony 56 constructor Create(DatabaseName: AnsiString; DPB: IDPB;
66 tony 45 RaiseExceptionOnConnectError: boolean);
67     procedure CheckHandle; virtual; abstract;
68 tony 56 function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
69 tony 45 procedure EndAllTransactions;
70     procedure SetParameters(SQLParams: ISQLParams; params: array of const);
71     public
72     destructor Destroy; override;
73     function getDPB: IDPB;
74     function AllocateBPB: IBPB;
75     function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
76     function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
77     procedure Disconnect(Force: boolean=false); virtual; abstract;
78 tony 56 procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
79     procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
80     procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
81     procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
82     function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
83     function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
84     function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
85     function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
86     function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
87     function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
88 tony 45 params: array of const): IResultSet; overload;
89 tony 56 function OpenCursor(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
90     function OpenCursor(transaction: ITransaction; sql: AnsiString;
91 tony 45 params: array of const): IResultSet; overload;
92 tony 56 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
93     function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
94 tony 45 params: array of const): IResultSet; overload;
95 tony 56 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
96     function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
97 tony 45 params: array of const): IResultSet; overload;
98 tony 56 function OpenCursorAtStart(sql: AnsiString): IResultSet; overload;
99     function OpenCursorAtStart(sql: AnsiString;
100 tony 45 params: array of const): IResultSet; overload;
101 tony 56 function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload; virtual; abstract;
102     function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
103     function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
104 tony 45 aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; overload; virtual; abstract;
105 tony 56 function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
106 tony 45 GenerateParamNames: boolean=false): IStatement; overload;
107     function GetEventHandler(Events: TStrings): IEvents; overload; virtual; abstract;
108 tony 56 function GetEventHandler(Event: AnsiString): IEvents; overload;
109 tony 45
110     function GetSQLDialect: integer;
111 tony 56 function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
112 tony 45 function OpenBlob(transaction: ITransaction; Field: ISQLData; BPB: IBPB=nil): IBlob; overload;
113     property SQLDialect: integer read FSQLDialect;
114     property DPB: IDPB read FDPB;
115 tony 60 public
116     {Character Sets}
117 tony 109 function HasDefaultCharSet: boolean;
118     function GetDefaultCharSetID: integer;
119 tony 60 function GetCharsetName(CharSetID: integer): AnsiString;
120     function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
121     function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
122     function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
123     function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
124     procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
125     AllowReverseLookup:boolean; out CharSetID: integer);
126     property CharSetID: integer read FCharSetID;
127     property CodePage: TSystemCodePage read FCodePage;
128 tony 45 end;
129    
130     implementation
131    
132     uses FBMessages, FBTransaction;
133    
134 tony 60 const
135     CharSetMap: array [0..69] of TCharsetMap = (
136     (CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP; AllowReverseLookup: true),
137     (CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
138     (CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII; AllowReverseLookup: true),
139     (CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8; AllowReverseLookup: false),
140     (CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8; AllowReverseLookup: true),
141     (CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
142     (CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
143     (CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
144     (CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
145     (CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737; AllowReverseLookup: true),
146     (CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437; AllowReverseLookup: true),
147     (CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850; AllowReverseLookup: true),
148     (CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865; AllowReverseLookup: true),
149     (CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860; AllowReverseLookup: true),
150     (CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863; AllowReverseLookup: true),
151     (CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775; AllowReverseLookup: true),
152     (CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858; AllowReverseLookup: true),
153     (CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862; AllowReverseLookup: true),
154     (CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864; AllowReverseLookup: true),
155     (CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
156     (CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
157     (CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591; AllowReverseLookup: true),
158     (CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592; AllowReverseLookup: true),
159     (CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593; AllowReverseLookup: true),
160     (CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
161     (CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
162     (CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
163     (CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
164     (CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
165     (CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
166     (CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
167     (CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
168     (CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
169     (CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
170     (CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594; AllowReverseLookup: true),
171     (CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595; AllowReverseLookup: true),
172     (CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596; AllowReverseLookup: true),
173     (CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597; AllowReverseLookup: true),
174     (CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598; AllowReverseLookup: true),
175     (CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599; AllowReverseLookup: true),
176     (CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603; AllowReverseLookup: true),
177     (CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
178     (CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
179     (CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
180     (CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949; AllowReverseLookup: true),
181     (CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852; AllowReverseLookup: true),
182     (CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857; AllowReverseLookup: true),
183     (CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861; AllowReverseLookup: true),
184     (CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866; AllowReverseLookup: true),
185     (CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869; AllowReverseLookup: true),
186     (CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
187     (CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250; AllowReverseLookup: true),
188     (CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
189     (CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252; AllowReverseLookup: true),
190     (CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253; AllowReverseLookup: true),
191     (CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254; AllowReverseLookup: true),
192     (CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950; AllowReverseLookup: true),
193     (CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
194     (CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255; AllowReverseLookup: true),
195     (CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256; AllowReverseLookup: true),
196     (CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257; AllowReverseLookup: true),
197     (CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
198     (CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
199     (CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866; AllowReverseLookup: true),
200     (CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866; AllowReverseLookup: true),
201     (CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258; AllowReverseLookup: true),
202     (CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874; AllowReverseLookup: true),
203     (CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
204     (CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943; AllowReverseLookup: true),
205     (CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936; AllowReverseLookup: true)
206     );
207    
208    
209    
210    
211 tony 45 { TFBAttachment }
212    
213 tony 56 constructor TFBAttachment.Create(DatabaseName: AnsiString; DPB: IDPB;
214 tony 45 RaiseExceptionOnConnectError: boolean);
215     begin
216     inherited Create;
217     FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
218     FSQLDialect := 3;
219     FDatabaseName := DatabaseName;
220     FDPB := DPB;
221 tony 60 SetLength(FUserCharSetMap,0);
222 tony 45 FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
223     end;
224    
225 tony 56 function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
226     var CreateParams: AnsiString;
227 tony 45 DPBItem: IDPBItem;
228     begin
229     CreateParams := '';
230    
231     if aDPB <> nil then
232     begin
233     DPBItem := aDPB.Find(isc_dpb_user_name);
234     if DPBItem <> nil then
235 tony 56 CreateParams := CreateParams + ' USER ''' + DPBItem.AsString + '''';
236 tony 45
237     DPBItem := aDPB.Find(isc_dpb_password);
238     if DPBItem <> nil then
239 tony 56 CreateParams := CreateParams + ' Password ''' + DPBItem.AsString + '''';
240 tony 45
241     DPBItem := aDPB.Find(isc_dpb_page_size);
242     if DPBItem <> nil then
243 tony 56 CreateParams := CreateParams + ' PAGE_SIZE ' + DPBItem.AsString;
244 tony 45
245     DPBItem := aDPB.Find(isc_dpb_lc_ctype);
246     if DPBItem <> nil then
247 tony 56 CreateParams := CreateParams + ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
248 tony 45
249     DPBItem := aDPB.Find(isc_dpb_sql_dialect);
250     if DPBItem <> nil then
251     FSQLDialect := DPBItem.AsInteger;
252     end;
253    
254     Result := 'CREATE DATABASE ''' + DatabaseName + ''' ' + CreateParams; {do not localize}
255     end;
256    
257     procedure TFBAttachment.EndAllTransactions;
258     var i: integer;
259     intf: TInterfacedObject;
260     begin
261     for i := 0 to InterfaceCount - 1 do
262     begin
263     intf := GetInterface(i);
264     if (intf <> nil) and (intf is TFBTransaction) then
265     TFBTransaction(intf).DoDefaultTransactionEnd(true);
266     end;
267     end;
268    
269     procedure TFBAttachment.SetParameters(SQLParams: ISQLParams;
270     params: array of const);
271     var i: integer;
272     begin
273     if SQLParams.Count <> Length(params) then
274     IBError(ibxeInvalidParamCount,[SQLParams.Count,Length(params)]);
275    
276     for i := 0 to High(params) do
277     begin
278     case params[i].vtype of
279     vtinteger :
280     SQLParams[i].AsInteger := params[i].vinteger;
281 tony 70 vtInt64:
282     SQLParams[i].AsInt64 := params[i].VInt64^;
283     {$IF declared (vtQWord)}
284     vtQWord:
285     SQLParams[i].AsInt64 := params[i].VQWord^;
286     {$IFEND}
287 tony 45 vtboolean :
288     SQLParams[i].AsBoolean := params[i].vboolean;
289     vtchar :
290     SQLParams[i].AsString := params[i].vchar;
291     vtextended :
292     SQLParams[i].AsDouble := params[i].VExtended^;
293     vtCurrency:
294     SQLParams[i].AsDouble := params[i].VCurrency^;
295     vtString :
296 tony 70 SQLParams[i].AsString := strpas(PChar(params[i].VString));
297 tony 45 vtPChar :
298     SQLParams[i].AsString := strpas(params[i].VPChar);
299     vtAnsiString :
300 tony 70 SQLParams[i].AsString := strpas(PAnsiChar(params[i].VAnsiString));
301 tony 45 vtVariant:
302     SQLParams[i].AsVariant := params[i].VVariant^;
303 tony 70 vtWideChar:
304     SQLParams[i].AsString := UTF8Encode(WideCharLenToString(@params[i].VWideChar,1));
305     vtPWideChar:
306     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VPWideChar)));
307     vtWideString:
308     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VWideString)));
309     vtUnicodeString:
310     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VUnicodeString)));
311 tony 45 else
312     IBError(ibxeInvalidVariantType,[nil]);
313     end;
314     end;
315     end;
316    
317     destructor TFBAttachment.Destroy;
318     begin
319     Disconnect(true);
320     inherited Destroy;
321     end;
322    
323     function TFBAttachment.getDPB: IDPB;
324     begin
325     Result := FDPB;
326     end;
327    
328     function TFBAttachment.AllocateBPB: IBPB;
329     begin
330     Result := TBPB.Create;
331     end;
332    
333 tony 56 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
334 tony 45 aSQLDialect: integer);
335     begin
336     ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
337     end;
338    
339 tony 56 procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
340 tony 45 begin
341     ExecImmediate(transaction,sql,FSQLDialect);
342     end;
343    
344 tony 56 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
345 tony 45 begin
346     ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
347     end;
348    
349 tony 56 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
350 tony 45 SQLDialect: integer; params: array of const): IResults;
351     begin
352     Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,FSQLDialect,params);
353     end;
354    
355 tony 56 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
356 tony 45 SQLDialect: integer; params: array of const): IResults;
357     begin
358     with Prepare(transaction,sql,SQLDialect) do
359     begin
360     SetParameters(SQLParams,params);
361     Result := Execute;
362     end;
363     end;
364    
365 tony 56 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
366 tony 45 params: array of const): IResults;
367     begin
368     Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
369     end;
370    
371 tony 56 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
372 tony 45 params: array of const): IResults;
373     begin
374     with Prepare(transaction,sql,FSQLDialect) do
375     begin
376     SetParameters(SQLParams,params);
377     Result := Execute;
378     end;
379     end;
380    
381 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
382 tony 45 aSQLDialect: integer): IResultSet;
383     begin
384     Result := OpenCursor(transaction,sql,aSQLDialect,[]);
385     end;
386    
387 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
388 tony 45 aSQLDialect: integer; params: array of const): IResultSet;
389     var Statement: IStatement;
390     begin
391     CheckHandle;
392     Statement := Prepare(transaction,sql,aSQLDialect);
393     SetParameters(Statement.SQLParams,params);
394     Result := Statement.OpenCursor;
395     end;
396    
397 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString
398 tony 45 ): IResultSet;
399     begin
400     Result := OpenCursor(transaction,sql,FSQLDialect,[]);
401     end;
402    
403 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
404 tony 45 params: array of const): IResultSet;
405     begin
406     Result := OpenCursor(transaction,sql,FSQLDialect,params);
407     end;
408    
409     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
410 tony 56 sql: AnsiString; aSQLDialect: integer): IResultSet;
411 tony 45 begin
412     Result := OpenCursor(transaction,sql,aSQLDialect,[]);
413     Result.FetchNext;
414     end;
415    
416     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
417 tony 56 sql: AnsiString; aSQLDialect: integer; params: array of const): IResultSet;
418 tony 45 begin
419     Result := OpenCursor(transaction,sql,aSQLDialect,params);
420     Result.FetchNext;
421     end;
422    
423 tony 56 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: AnsiString
424 tony 45 ): IResultSet;
425     begin
426     Result := OpenCursorAtStart(transaction,sql,FSQLDialect,[]);
427     end;
428    
429     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
430 tony 56 sql: AnsiString; params: array of const): IResultSet;
431 tony 45 begin
432     Result := OpenCursorAtStart(transaction,sql,FSQLDialect,params);
433     end;
434    
435 tony 56 function TFBAttachment.OpenCursorAtStart(sql: AnsiString): IResultSet;
436 tony 45 begin
437     Result := OpenCursorAtStart(sql,[]);
438     end;
439    
440 tony 56 function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
441 tony 45 params: array of const): IResultSet;
442     begin
443     Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,params);
444     end;
445    
446 tony 56 function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString
447 tony 45 ): IStatement;
448     begin
449     Result := Prepare(transaction,sql,FSQLDialect);
450     end;
451    
452     function TFBAttachment.PrepareWithNamedParameters(transaction: ITransaction;
453 tony 56 sql: AnsiString; GenerateParamNames: boolean): IStatement;
454 tony 45 begin
455     Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames);
456     end;
457    
458 tony 56 function TFBAttachment.GetEventHandler(Event: AnsiString): IEvents;
459 tony 45 var S: TStringList;
460     begin
461     S := TStringList.Create;
462     try
463     S.Add(Event);
464     Result := GetEventHandler(S);
465     finally
466     S.Free;
467     end;
468     end;
469    
470     function TFBAttachment.GetSQLDialect: integer;
471     begin
472     Result := FSQLDialect;
473     end;
474    
475     function TFBAttachment.OpenBlob(transaction: ITransaction; Field: ISQLData;
476     BPB: IBPB): IBlob;
477     begin
478     Result := OpenBlob(Transaction,Field.GetBlobMetadata, Field.AsQuad,BPB);
479     end;
480    
481 tony 109 function TFBAttachment.HasDefaultCharSet: boolean;
482     begin
483     Result := FHasDefaultCharSet
484     end;
485    
486     function TFBAttachment.GetDefaultCharSetID: integer;
487     begin
488     Result := FCharsetID;
489     end;
490    
491 tony 60 function TFBAttachment.GetCharsetName(CharSetID: integer): AnsiString;
492     var i: integer;
493     begin
494     Result := '';
495     if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
496     (CharSetMap[CharSetID].CharSetID = CharSetID) then
497     begin
498     Result := CharSetMap[CharSetID].CharSetName;
499     Exit;
500     end;
501    
502     for i := 0 to Length(FUserCharSetMap) - 1 do
503     if FUserCharSetMap[i].CharSetID = CharSetID then
504     begin
505     Result := FUserCharSetMap[i].CharSetName;
506     Exit;
507     end;
508     end;
509    
510     function TFBAttachment.CharSetID2CodePage(CharSetID: integer;
511     var CodePage: TSystemCodePage): boolean;
512     var i: integer;
513     begin
514     Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
515     and (CharSetMap[CharSetID].CharSetID = CharSetID);
516     if Result then
517     begin
518     CodePage := CharSetMap[CharSetID].CodePage;
519     Result := true;
520     Exit;
521     end;
522    
523     for i := 0 to Length(FUserCharSetMap) - 1 do
524     if FUserCharSetMap[i].CharSetID = CharSetID then
525     begin
526     CodePage := FUserCharSetMap[i].CodePage;
527     Result := true;
528     Exit;
529     end;
530     end;
531    
532     function TFBAttachment.CodePage2CharSetID(CodePage: TSystemCodePage;
533     var CharSetID: integer): boolean;
534     var i: integer;
535     begin
536     Result := false;
537     for i := Low(CharSetMap) to High(CharSetMap) do
538     if (CharSetMap[i].AllowReverseLookup) and (CharSetMap[i].CodePage = CodePage) then
539     begin
540     CharSetID := CharSetMap[i].CharSetID;
541     Result := true;
542     Exit;
543     end;
544    
545     for i := 0 to Length(FUserCharSetMap) - 1 do
546     if (FUserCharSetMap[i].AllowReverseLookup) and (FUserCharSetMap[i].CodePage = CodePage) then
547     begin
548     CharSetID := FUserCharSetMap[i].CharSetID;
549     Result := true;
550     Exit;
551     end;
552     end;
553    
554     function TFBAttachment.CharSetName2CharSetID(CharSetName: AnsiString;
555     var CharSetID: integer): boolean;
556     var i: integer;
557     begin
558     Result := false;
559     for i := Low(CharSetMap) to High(CharSetMap) do
560     if AnsiCompareStr(CharSetMap[i].CharSetName, CharSetName) = 0 then
561     begin
562     CharSetID := CharSetMap[i].CharSetID;
563     Result := true;
564     Exit;
565     end;
566    
567     for i := 0 to Length(FUserCharSetMap) - 1 do
568     if AnsiCompareStr(FUserCharSetMap[i].CharSetName, CharSetName) = 0 then
569     begin
570     CharSetID := FUserCharSetMap[i].CharSetID;
571     Result := true;
572     Exit;
573     end;
574     end;
575    
576     function TFBAttachment.CharSetWidth(CharSetID: integer; var Width: integer
577     ): boolean;
578     var i: integer;
579     begin
580     Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
581     and (CharSetMap[CharSetID].CharSetID = CharSetID);
582     if Result then
583     begin
584     Width := CharSetMap[CharSetID].CharSetWidth;
585     Result := true;
586     Exit;
587     end;
588    
589     for i := 0 to Length(FUserCharSetMap) - 1 do
590     if FUserCharSetMap[i].CharSetID = CharSetID then
591     begin
592     Width := FUserCharSetMap[i].CharSetWidth;
593     Result := true;
594     Exit;
595     end;
596     end;
597    
598     const
599     sqlLookupCharSet = 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER From RDB$CHARACTER_SETS '+
600     'Where RDB$SYSTEM_FLAG = 0 and RDB$CHARACTER_SET_NAME = UPPER(?)';
601    
602     procedure TFBAttachment.RegisterCharSet(CharSetName: AnsiString;
603     CodePage: TSystemCodePage; AllowReverseLookup: boolean; out CharSetID: integer
604     );
605     var CharSets: IResultSet;
606     idx: integer;
607     begin
608     if CharSetName2CharSetID(CharSetName,CharSetID) then
609     IBError(ibxeCharacterSetExists,[CharSetName]);
610    
611     CharSets := OpenCursorAtStart(sqlLookupCharSet,[CharSetName]);
612     if CharSets.IsEof then
613     IBError(ibxeUnknownUserCharSet,[CharSetName]);
614    
615     idx := Length(FUserCharSetMap);
616     SetLength(FUserCharSetMap,idx+1);
617     FUserCharSetMap[idx].AllowReverseLookup := AllowReverseLookup;
618     FUserCharSetMap[idx].CharSetID := CharSets[0].AsInteger;
619     FUserCharSetMap[idx].CharSetName := AnsiUpperCase(CharSetName);
620     FUserCharSetMap[idx].CharSetWidth := CharSets[1].AsInteger;
621     FUserCharSetMap[idx].CodePage := CodePage;
622     CharSetID := CharSets[0].AsInteger;
623     end;
624    
625 tony 45 end.
626