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root/public/ibx/trunk/fbintf/client/FBAttachment.pas
Revision: 118
Committed: Mon Jan 22 13:58:14 2018 UTC (2 years, 8 months ago) by tony
File size: 30032 byte(s)
Log Message:
Fixes Merged
Line File contents
1 (*
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 {$IFDEF MSWINDOWS}
29 {$DEFINE WINDOWS}
30 {$IF CompilerVersion >= 28}
31 {Delphi XE7 onwards}}
32 {$define HASREQEX}
33 {$IFEND}
34 {$ENDIF}
35
36 {$IFDEF FPC}
37 {$mode delphi}
38 {$interfaces COM}
39 {$define HASREQEX}
40 {$ENDIF}
41
42 interface
43
44 uses
45 Classes, SysUtils, {$IFDEF WINDOWS} windows, {$ENDIF} IB, FBParamBlock, FBActivityMonitor;
46
47 type
48 TCharsetMap = record
49 CharsetID: integer;
50 CharSetName: AnsiString;
51 CharSetWidth: integer;
52 CodePage: TSystemCodePage;
53 AllowReverseLookup: boolean; {used to ensure that lookup of CP_UTF* does not return UNICODE_FSS}
54 end;
55
56 { TFBAttachment }
57
58 TFBAttachment = class(TActivityHandler)
59 private
60 FDPB: IDPB;
61 FFirebirdAPI: IFirebirdAPI;
62 FODSMajorVersion: integer;
63 FODSMinorVersion: integer;
64 FUserCharSetMap: array of TCharSetMap;
65 protected
66 FDatabaseName: AnsiString;
67 FRaiseExceptionOnConnectError: boolean;
68 FSQLDialect: integer;
69 FHasDefaultCharSet: boolean;
70 FCharSetID: integer;
71 FCodePage: TSystemCodePage;
72 FRemoteProtocol: AnsiString;
73 constructor Create(DatabaseName: AnsiString; DPB: IDPB;
74 RaiseExceptionOnConnectError: boolean);
75 procedure CheckHandle; virtual; abstract;
76 function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
77 procedure GetODSAndConnectionInfo;
78 function IsConnected: boolean; virtual; abstract;
79 procedure EndAllTransactions;
80 procedure DPBFromCreateSQL(CreateSQL: AnsiString);
81 procedure SetParameters(SQLParams: ISQLParams; params: array of const);
82 public
83 destructor Destroy; override;
84 function getDPB: IDPB;
85 function AllocateBPB: IBPB;
86 function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
87 function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
88 procedure Disconnect(Force: boolean=false); virtual; abstract;
89 procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
90 procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
91 procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
92 procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
93 function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
94 function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
95 function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
96 function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
97 function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
98 function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
99 params: array of const): IResultSet; overload;
100 function OpenCursor(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
101 function OpenCursor(transaction: ITransaction; sql: AnsiString;
102 params: array of const): IResultSet; overload;
103 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
104 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
105 params: array of const): IResultSet; overload;
106 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
107 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
108 params: array of const): IResultSet; overload;
109 function OpenCursorAtStart(sql: AnsiString): IResultSet; overload;
110 function OpenCursorAtStart(sql: AnsiString;
111 params: array of const): IResultSet; overload;
112 function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload; virtual; abstract;
113 function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
114 function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
115 aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; overload; virtual; abstract;
116 function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
117 GenerateParamNames: boolean=false): IStatement; overload;
118 function GetEventHandler(Events: TStrings): IEvents; overload; virtual; abstract;
119 function GetEventHandler(Event: AnsiString): IEvents; overload;
120
121 function GetSQLDialect: integer;
122 function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
123 function OpenBlob(transaction: ITransaction; Field: ISQLData; BPB: IBPB=nil): IBlob; overload;
124 property SQLDialect: integer read FSQLDialect;
125 property DPB: IDPB read FDPB;
126 public
127 function GetDBInformation(Requests: array of byte): IDBInformation; overload; virtual; abstract;
128 function GetDBInformation(Request: byte): IDBInformation; overload; virtual; abstract;
129 function GetConnectString: AnsiString;
130 function GetRemoteProtocol: AnsiString;
131 function GetODSMajorVersion: integer;
132 function GetODSMinorVersion: integer;
133 {Character Sets}
134 function HasDefaultCharSet: boolean;
135 function GetDefaultCharSetID: integer;
136 function GetCharsetName(CharSetID: integer): AnsiString;
137 function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
138 function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
139 function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
140 function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
141 procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
142 AllowReverseLookup:boolean; out CharSetID: integer);
143 property CharSetID: integer read FCharSetID;
144 property CodePage: TSystemCodePage read FCodePage;
145 end;
146
147 implementation
148
149 uses FBMessages, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
150
151 const
152 CharSetMap: array [0..69] of TCharsetMap = (
153 (CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP; AllowReverseLookup: true),
154 (CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
155 (CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII; AllowReverseLookup: true),
156 (CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8; AllowReverseLookup: false),
157 (CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8; AllowReverseLookup: true),
158 (CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
159 (CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
160 (CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
161 (CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
162 (CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737; AllowReverseLookup: true),
163 (CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437; AllowReverseLookup: true),
164 (CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850; AllowReverseLookup: true),
165 (CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865; AllowReverseLookup: true),
166 (CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860; AllowReverseLookup: true),
167 (CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863; AllowReverseLookup: true),
168 (CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775; AllowReverseLookup: true),
169 (CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858; AllowReverseLookup: true),
170 (CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862; AllowReverseLookup: true),
171 (CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864; AllowReverseLookup: true),
172 (CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
173 (CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
174 (CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591; AllowReverseLookup: true),
175 (CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592; AllowReverseLookup: true),
176 (CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593; AllowReverseLookup: true),
177 (CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
178 (CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
179 (CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
180 (CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
181 (CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
182 (CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
183 (CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
184 (CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
185 (CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
186 (CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
187 (CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594; AllowReverseLookup: true),
188 (CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595; AllowReverseLookup: true),
189 (CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596; AllowReverseLookup: true),
190 (CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597; AllowReverseLookup: true),
191 (CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598; AllowReverseLookup: true),
192 (CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599; AllowReverseLookup: true),
193 (CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603; AllowReverseLookup: true),
194 (CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
195 (CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
196 (CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
197 (CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949; AllowReverseLookup: true),
198 (CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852; AllowReverseLookup: true),
199 (CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857; AllowReverseLookup: true),
200 (CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861; AllowReverseLookup: true),
201 (CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866; AllowReverseLookup: true),
202 (CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869; AllowReverseLookup: true),
203 (CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
204 (CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250; AllowReverseLookup: true),
205 (CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
206 (CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252; AllowReverseLookup: true),
207 (CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253; AllowReverseLookup: true),
208 (CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254; AllowReverseLookup: true),
209 (CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950; AllowReverseLookup: true),
210 (CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
211 (CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255; AllowReverseLookup: true),
212 (CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256; AllowReverseLookup: true),
213 (CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257; AllowReverseLookup: true),
214 (CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
215 (CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
216 (CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866; AllowReverseLookup: true),
217 (CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866; AllowReverseLookup: true),
218 (CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258; AllowReverseLookup: true),
219 (CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874; AllowReverseLookup: true),
220 (CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
221 (CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943; AllowReverseLookup: true),
222 (CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936; AllowReverseLookup: true)
223 );
224
225
226
227
228 { TFBAttachment }
229
230 procedure TFBAttachment.GetODSAndConnectionInfo;
231 var DBInfo: IDBInformation;
232 i: integer;
233 Stmt: IStatement;
234 ResultSet: IResultSet;
235 Param: IDPBItem;
236 begin
237 if not IsConnected then Exit;
238 DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
239 isc_info_db_SQL_Dialect]);
240 for i := 0 to DBInfo.GetCount - 1 do
241 with DBInfo[i] do
242 case getItemType of
243 isc_info_ods_minor_version:
244 FODSMinorVersion := getAsInteger;
245 isc_info_ods_version:
246 FODSMajorVersion := getAsInteger;
247 isc_info_db_SQL_Dialect:
248 FSQLDialect := getAsInteger;
249 end;
250
251 if (FODSMajorVersion > 11) or ((FODSMajorVersion = 11) and (FODSMinorVersion >= 1)) then
252 begin
253 Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
254 'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL From MON$ATTACHMENTS '+
255 'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION');
256 ResultSet := Stmt.OpenCursor;
257 if ResultSet.FetchNext then
258 begin
259 FCharSetID := ResultSet[0].AsInteger;
260 FRemoteProtocol := ResultSet[1].AsString;
261 end
262 end
263 else
264 if DPB <> nil then
265 begin
266 Param := DPB.Find(isc_dpb_lc_ctype);
267 if (Param = nil) or not CharSetName2CharSetID(Param.AsString,FCharSetID) then
268 FCharSetID := 0;
269 FRemoteProtocol := '';
270 end
271 else
272 begin
273 FCharSetID := 0;
274 FRemoteProtocol := '';
275 end;
276 FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
277 end;
278
279 constructor TFBAttachment.Create(DatabaseName: AnsiString; DPB: IDPB;
280 RaiseExceptionOnConnectError: boolean);
281 begin
282 inherited Create;
283 FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
284 FSQLDialect := 3;
285 FDatabaseName := DatabaseName;
286 FDPB := DPB;
287 SetLength(FUserCharSetMap,0);
288 FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
289 FODSMajorVersion := 0;
290 FODSMinorVersion := 0;
291 end;
292
293 function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
294 var CreateParams: AnsiString;
295 DPBItem: IDPBItem;
296 begin
297 CreateParams := '';
298
299 if aDPB <> nil then
300 begin
301 DPBItem := aDPB.Find(isc_dpb_user_name);
302 if DPBItem <> nil then
303 CreateParams := CreateParams + ' USER ''' + DPBItem.AsString + '''';
304
305 DPBItem := aDPB.Find(isc_dpb_password);
306 if DPBItem <> nil then
307 CreateParams := CreateParams + ' Password ''' + DPBItem.AsString + '''';
308
309 DPBItem := aDPB.Find(isc_dpb_page_size);
310 if DPBItem <> nil then
311 CreateParams := CreateParams + ' PAGE_SIZE ' + DPBItem.AsString;
312
313 DPBItem := aDPB.Find(isc_dpb_lc_ctype);
314 if DPBItem <> nil then
315 CreateParams := CreateParams + ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
316
317 DPBItem := aDPB.Find(isc_dpb_sql_dialect);
318 if DPBItem <> nil then
319 FSQLDialect := DPBItem.AsInteger;
320 end;
321
322 Result := 'CREATE DATABASE ''' + DatabaseName + ''' ' + CreateParams; {do not localize}
323 end;
324
325 procedure TFBAttachment.EndAllTransactions;
326 var i: integer;
327 intf: TInterfacedObject;
328 begin
329 for i := 0 to InterfaceCount - 1 do
330 begin
331 intf := GetInterface(i);
332 if (intf <> nil) and (intf is TFBTransaction) then
333 TFBTransaction(intf).DoDefaultTransactionEnd(true);
334 end;
335 end;
336
337 {$IFDEF HASREQEX}
338 procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
339 var RegexObj: TRegExpr;
340 begin
341 FDPB := FFirebirdAPI.AllocateDPB;
342 RegexObj := TRegExpr.Create;
343 try
344 {extact database file spec}
345 RegexObj.ModifierG := false; {turn off greedy matches}
346 RegexObj.ModifierI := true; {case insensitive match}
347 RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +USER +''(.+)'' PASSWORD +''(.+)''';
348 if RegexObj.Exec(CreateSQL) then
349 begin
350 DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
351 DPB.Add(isc_dpb_password).AsString := system.copy(CreateSQL,RegexObj.MatchPos[3],RegexObj.MatchLen[3]);
352 end
353 else
354 begin
355 RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'') +USER +''(.+)''';
356 if RegexObj.Exec(CreateSQL) then
357 DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
358 end;
359 finally
360 RegexObj.Free;
361 end;
362 if FCharSetID > 0 then
363 DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
364 DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
365 end;
366 {$ELSE}
367 procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
368 end;
369 {$ENDIF}
370
371 procedure TFBAttachment.SetParameters(SQLParams: ISQLParams;
372 params: array of const);
373 var i: integer;
374 begin
375 if SQLParams.Count <> Length(params) then
376 IBError(ibxeInvalidParamCount,[SQLParams.Count,Length(params)]);
377
378 for i := 0 to High(params) do
379 begin
380 case params[i].vtype of
381 vtinteger :
382 SQLParams[i].AsInteger := params[i].vinteger;
383 vtInt64:
384 SQLParams[i].AsInt64 := params[i].VInt64^;
385 {$IF declared (vtQWord)}
386 vtQWord:
387 SQLParams[i].AsInt64 := params[i].VQWord^;
388 {$IFEND}
389 vtboolean :
390 SQLParams[i].AsBoolean := params[i].vboolean;
391 vtchar :
392 SQLParams[i].AsString := params[i].vchar;
393 vtextended :
394 SQLParams[i].AsDouble := params[i].VExtended^;
395 vtCurrency:
396 SQLParams[i].AsDouble := params[i].VCurrency^;
397 vtString :
398 SQLParams[i].AsString := strpas(PChar(params[i].VString));
399 vtPChar :
400 SQLParams[i].AsString := strpas(params[i].VPChar);
401 vtAnsiString :
402 SQLParams[i].AsString := strpas(PAnsiChar(params[i].VAnsiString));
403 vtVariant:
404 SQLParams[i].AsVariant := params[i].VVariant^;
405 vtWideChar:
406 SQLParams[i].AsString := UTF8Encode(WideCharLenToString(@params[i].VWideChar,1));
407 vtPWideChar:
408 SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VPWideChar)));
409 vtWideString:
410 SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VWideString)));
411 vtUnicodeString:
412 SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VUnicodeString)));
413 else
414 IBError(ibxeInvalidVariantType,[nil]);
415 end;
416 end;
417 end;
418
419 destructor TFBAttachment.Destroy;
420 begin
421 Disconnect(true);
422 inherited Destroy;
423 end;
424
425 function TFBAttachment.getDPB: IDPB;
426 begin
427 Result := FDPB;
428 end;
429
430 function TFBAttachment.AllocateBPB: IBPB;
431 begin
432 Result := TBPB.Create;
433 end;
434
435 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
436 aSQLDialect: integer);
437 begin
438 ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
439 end;
440
441 procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
442 begin
443 ExecImmediate(transaction,sql,FSQLDialect);
444 end;
445
446 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
447 begin
448 ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
449 end;
450
451 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
452 SQLDialect: integer; params: array of const): IResults;
453 begin
454 Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,SQLDialect,params);
455 end;
456
457 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
458 SQLDialect: integer; params: array of const): IResults;
459 begin
460 with Prepare(transaction,sql,SQLDialect) do
461 begin
462 SetParameters(SQLParams,params);
463 Result := Execute;
464 end;
465 end;
466
467 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
468 params: array of const): IResults;
469 begin
470 Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
471 end;
472
473 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
474 params: array of const): IResults;
475 begin
476 with Prepare(transaction,sql,FSQLDialect) do
477 begin
478 SetParameters(SQLParams,params);
479 Result := Execute;
480 end;
481 end;
482
483 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
484 aSQLDialect: integer): IResultSet;
485 begin
486 Result := OpenCursor(transaction,sql,aSQLDialect,[]);
487 end;
488
489 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
490 aSQLDialect: integer; params: array of const): IResultSet;
491 var Statement: IStatement;
492 begin
493 CheckHandle;
494 Statement := Prepare(transaction,sql,aSQLDialect);
495 SetParameters(Statement.SQLParams,params);
496 Result := Statement.OpenCursor;
497 end;
498
499 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString
500 ): IResultSet;
501 begin
502 Result := OpenCursor(transaction,sql,FSQLDialect,[]);
503 end;
504
505 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
506 params: array of const): IResultSet;
507 begin
508 Result := OpenCursor(transaction,sql,FSQLDialect,params);
509 end;
510
511 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
512 sql: AnsiString; aSQLDialect: integer): IResultSet;
513 begin
514 Result := OpenCursor(transaction,sql,aSQLDialect,[]);
515 Result.FetchNext;
516 end;
517
518 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
519 sql: AnsiString; aSQLDialect: integer; params: array of const): IResultSet;
520 begin
521 Result := OpenCursor(transaction,sql,aSQLDialect,params);
522 Result.FetchNext;
523 end;
524
525 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: AnsiString
526 ): IResultSet;
527 begin
528 Result := OpenCursorAtStart(transaction,sql,FSQLDialect,[]);
529 end;
530
531 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
532 sql: AnsiString; params: array of const): IResultSet;
533 begin
534 Result := OpenCursorAtStart(transaction,sql,FSQLDialect,params);
535 end;
536
537 function TFBAttachment.OpenCursorAtStart(sql: AnsiString): IResultSet;
538 begin
539 Result := OpenCursorAtStart(sql,[]);
540 end;
541
542 function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
543 params: array of const): IResultSet;
544 begin
545 Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,params);
546 end;
547
548 function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString
549 ): IStatement;
550 begin
551 Result := Prepare(transaction,sql,FSQLDialect);
552 end;
553
554 function TFBAttachment.PrepareWithNamedParameters(transaction: ITransaction;
555 sql: AnsiString; GenerateParamNames: boolean): IStatement;
556 begin
557 Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames);
558 end;
559
560 function TFBAttachment.GetEventHandler(Event: AnsiString): IEvents;
561 var S: TStringList;
562 begin
563 S := TStringList.Create;
564 try
565 S.Add(Event);
566 Result := GetEventHandler(S);
567 finally
568 S.Free;
569 end;
570 end;
571
572 function TFBAttachment.GetSQLDialect: integer;
573 begin
574 Result := FSQLDialect;
575 end;
576
577 function TFBAttachment.OpenBlob(transaction: ITransaction; Field: ISQLData;
578 BPB: IBPB): IBlob;
579 begin
580 Result := OpenBlob(Transaction,Field.GetBlobMetadata, Field.AsQuad,BPB);
581 end;
582
583 function TFBAttachment.GetConnectString: AnsiString;
584 begin
585 Result := FDatabaseName;
586 end;
587
588 function TFBAttachment.GetRemoteProtocol: AnsiString;
589 begin
590 Result := FRemoteProtocol;
591 end;
592
593 function TFBAttachment.GetODSMajorVersion: integer;
594 begin
595 Result := FODSMajorVersion;
596 end;
597
598 function TFBAttachment.GetODSMinorVersion: integer;
599 begin
600 Result := FODSMinorVersion;
601 end;
602
603 function TFBAttachment.HasDefaultCharSet: boolean;
604 begin
605 Result := FHasDefaultCharSet
606 end;
607
608 function TFBAttachment.GetDefaultCharSetID: integer;
609 begin
610 Result := FCharsetID;
611 end;
612
613 function TFBAttachment.GetCharsetName(CharSetID: integer): AnsiString;
614 var i: integer;
615 begin
616 Result := '';
617 if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
618 (CharSetMap[CharSetID].CharSetID = CharSetID) then
619 begin
620 Result := CharSetMap[CharSetID].CharSetName;
621 Exit;
622 end;
623
624 for i := 0 to Length(FUserCharSetMap) - 1 do
625 if FUserCharSetMap[i].CharSetID = CharSetID then
626 begin
627 Result := FUserCharSetMap[i].CharSetName;
628 Exit;
629 end;
630 end;
631
632 function TFBAttachment.CharSetID2CodePage(CharSetID: integer;
633 var CodePage: TSystemCodePage): boolean;
634 var i: integer;
635 begin
636 Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
637 and (CharSetMap[CharSetID].CharSetID = CharSetID);
638 if Result then
639 begin
640 CodePage := CharSetMap[CharSetID].CodePage;
641 Result := true;
642 Exit;
643 end;
644
645 for i := 0 to Length(FUserCharSetMap) - 1 do
646 if FUserCharSetMap[i].CharSetID = CharSetID then
647 begin
648 CodePage := FUserCharSetMap[i].CodePage;
649 Result := true;
650 Exit;
651 end;
652 end;
653
654 function TFBAttachment.CodePage2CharSetID(CodePage: TSystemCodePage;
655 var CharSetID: integer): boolean;
656 var i: integer;
657 begin
658 Result := false;
659 for i := Low(CharSetMap) to High(CharSetMap) do
660 if (CharSetMap[i].AllowReverseLookup) and (CharSetMap[i].CodePage = CodePage) then
661 begin
662 CharSetID := CharSetMap[i].CharSetID;
663 Result := true;
664 Exit;
665 end;
666
667 for i := 0 to Length(FUserCharSetMap) - 1 do
668 if (FUserCharSetMap[i].AllowReverseLookup) and (FUserCharSetMap[i].CodePage = CodePage) then
669 begin
670 CharSetID := FUserCharSetMap[i].CharSetID;
671 Result := true;
672 Exit;
673 end;
674 end;
675
676 function TFBAttachment.CharSetName2CharSetID(CharSetName: AnsiString;
677 var CharSetID: integer): boolean;
678 var i: integer;
679 begin
680 Result := false;
681 for i := Low(CharSetMap) to High(CharSetMap) do
682 if AnsiCompareStr(CharSetMap[i].CharSetName, CharSetName) = 0 then
683 begin
684 CharSetID := CharSetMap[i].CharSetID;
685 Result := true;
686 Exit;
687 end;
688
689 for i := 0 to Length(FUserCharSetMap) - 1 do
690 if AnsiCompareStr(FUserCharSetMap[i].CharSetName, CharSetName) = 0 then
691 begin
692 CharSetID := FUserCharSetMap[i].CharSetID;
693 Result := true;
694 Exit;
695 end;
696 end;
697
698 function TFBAttachment.CharSetWidth(CharSetID: integer; var Width: integer
699 ): boolean;
700 var i: integer;
701 begin
702 Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
703 and (CharSetMap[CharSetID].CharSetID = CharSetID);
704 if Result then
705 begin
706 Width := CharSetMap[CharSetID].CharSetWidth;
707 Result := true;
708 Exit;
709 end;
710
711 for i := 0 to Length(FUserCharSetMap) - 1 do
712 if FUserCharSetMap[i].CharSetID = CharSetID then
713 begin
714 Width := FUserCharSetMap[i].CharSetWidth;
715 Result := true;
716 Exit;
717 end;
718 end;
719
720 const
721 sqlLookupCharSet = 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER From RDB$CHARACTER_SETS '+
722 'Where RDB$SYSTEM_FLAG = 0 and RDB$CHARACTER_SET_NAME = UPPER(?)';
723
724 procedure TFBAttachment.RegisterCharSet(CharSetName: AnsiString;
725 CodePage: TSystemCodePage; AllowReverseLookup: boolean; out CharSetID: integer
726 );
727 var CharSets: IResultSet;
728 idx: integer;
729 begin
730 if CharSetName2CharSetID(CharSetName,CharSetID) then
731 IBError(ibxeCharacterSetExists,[CharSetName]);
732
733 CharSets := OpenCursorAtStart(sqlLookupCharSet,[CharSetName]);
734 if CharSets.IsEof then
735 IBError(ibxeUnknownUserCharSet,[CharSetName]);
736
737 idx := Length(FUserCharSetMap);
738 SetLength(FUserCharSetMap,idx+1);
739 FUserCharSetMap[idx].AllowReverseLookup := AllowReverseLookup;
740 FUserCharSetMap[idx].CharSetID := CharSets[0].AsInteger;
741 FUserCharSetMap[idx].CharSetName := AnsiUpperCase(CharSetName);
742 FUserCharSetMap[idx].CharSetWidth := CharSets[1].AsInteger;
743 FUserCharSetMap[idx].CodePage := CodePage;
744 CharSetID := CharSets[0].AsInteger;
745 end;
746
747 end.
748