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root/public/ibx/trunk/fbintf/client/FBAttachment.pas
Revision: 117
Committed: Mon Jan 22 13:58:11 2018 UTC (6 years, 3 months ago) by tony
Content type: text/x-pascal
File size: 29804 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 117 FODSMajorVersion: integer;
58     FODSMinorVersion: integer;
59 tony 60 FUserCharSetMap: array of TCharSetMap;
60 tony 45 protected
61 tony 56 FDatabaseName: AnsiString;
62 tony 45 FRaiseExceptionOnConnectError: boolean;
63     FSQLDialect: integer;
64     FHasDefaultCharSet: boolean;
65     FCharSetID: integer;
66     FCodePage: TSystemCodePage;
67 tony 117 FRemoteProtocol: AnsiString;
68 tony 56 constructor Create(DatabaseName: AnsiString; DPB: IDPB;
69 tony 45 RaiseExceptionOnConnectError: boolean);
70     procedure CheckHandle; virtual; abstract;
71 tony 56 function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
72 tony 117 procedure GetODSAndConnectionInfo;
73     function IsConnected: boolean; virtual; abstract;
74 tony 45 procedure EndAllTransactions;
75 tony 117 procedure DPBFromCreateSQL(CreateSQL: AnsiString);
76 tony 45 procedure SetParameters(SQLParams: ISQLParams; params: array of const);
77     public
78     destructor Destroy; override;
79     function getDPB: IDPB;
80     function AllocateBPB: IBPB;
81     function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
82     function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
83     procedure Disconnect(Force: boolean=false); virtual; abstract;
84 tony 56 procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
85     procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
86     procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
87     procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
88     function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
89     function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
90     function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
91     function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
92     function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
93     function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
94 tony 45 params: array of const): IResultSet; overload;
95 tony 56 function OpenCursor(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
96     function OpenCursor(transaction: ITransaction; sql: AnsiString;
97 tony 45 params: array of const): IResultSet; overload;
98 tony 56 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
99     function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
100 tony 45 params: array of const): IResultSet; overload;
101 tony 56 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
102     function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
103 tony 45 params: array of const): IResultSet; overload;
104 tony 56 function OpenCursorAtStart(sql: AnsiString): IResultSet; overload;
105     function OpenCursorAtStart(sql: AnsiString;
106 tony 45 params: array of const): IResultSet; overload;
107 tony 56 function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload; virtual; abstract;
108     function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
109     function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
110 tony 45 aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; overload; virtual; abstract;
111 tony 56 function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
112 tony 45 GenerateParamNames: boolean=false): IStatement; overload;
113     function GetEventHandler(Events: TStrings): IEvents; overload; virtual; abstract;
114 tony 56 function GetEventHandler(Event: AnsiString): IEvents; overload;
115 tony 45
116     function GetSQLDialect: integer;
117 tony 56 function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
118 tony 45 function OpenBlob(transaction: ITransaction; Field: ISQLData; BPB: IBPB=nil): IBlob; overload;
119     property SQLDialect: integer read FSQLDialect;
120     property DPB: IDPB read FDPB;
121 tony 60 public
122 tony 117 function GetDBInformation(Requests: array of byte): IDBInformation; overload; virtual; abstract;
123     function GetDBInformation(Request: byte): IDBInformation; overload; virtual; abstract;
124     function GetConnectString: AnsiString;
125     function GetRemoteProtocol: AnsiString;
126     function GetODSMajorVersion: integer;
127     function GetODSMinorVersion: integer;
128     {Character Sets}
129 tony 109 function HasDefaultCharSet: boolean;
130     function GetDefaultCharSetID: integer;
131 tony 60 function GetCharsetName(CharSetID: integer): AnsiString;
132     function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
133     function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
134     function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
135     function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
136     procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
137     AllowReverseLookup:boolean; out CharSetID: integer);
138     property CharSetID: integer read FCharSetID;
139     property CodePage: TSystemCodePage read FCodePage;
140 tony 45 end;
141    
142     implementation
143    
144 tony 117 uses FBMessages, FBTransaction, RegExpr;
145 tony 45
146 tony 60 const
147     CharSetMap: array [0..69] of TCharsetMap = (
148     (CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP; AllowReverseLookup: true),
149     (CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
150     (CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII; AllowReverseLookup: true),
151     (CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8; AllowReverseLookup: false),
152     (CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8; AllowReverseLookup: true),
153     (CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
154     (CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
155     (CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
156     (CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
157     (CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737; AllowReverseLookup: true),
158     (CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437; AllowReverseLookup: true),
159     (CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850; AllowReverseLookup: true),
160     (CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865; AllowReverseLookup: true),
161     (CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860; AllowReverseLookup: true),
162     (CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863; AllowReverseLookup: true),
163     (CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775; AllowReverseLookup: true),
164     (CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858; AllowReverseLookup: true),
165     (CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862; AllowReverseLookup: true),
166     (CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864; AllowReverseLookup: true),
167     (CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
168     (CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
169     (CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591; AllowReverseLookup: true),
170     (CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592; AllowReverseLookup: true),
171     (CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593; AllowReverseLookup: true),
172     (CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
173     (CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
174     (CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
175     (CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
176     (CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
177     (CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
178     (CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
179     (CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
180     (CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
181     (CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
182     (CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594; AllowReverseLookup: true),
183     (CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595; AllowReverseLookup: true),
184     (CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596; AllowReverseLookup: true),
185     (CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597; AllowReverseLookup: true),
186     (CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598; AllowReverseLookup: true),
187     (CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599; AllowReverseLookup: true),
188     (CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603; AllowReverseLookup: true),
189     (CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
190     (CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
191     (CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
192     (CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949; AllowReverseLookup: true),
193     (CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852; AllowReverseLookup: true),
194     (CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857; AllowReverseLookup: true),
195     (CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861; AllowReverseLookup: true),
196     (CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866; AllowReverseLookup: true),
197     (CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869; AllowReverseLookup: true),
198     (CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
199     (CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250; AllowReverseLookup: true),
200     (CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
201     (CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252; AllowReverseLookup: true),
202     (CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253; AllowReverseLookup: true),
203     (CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254; AllowReverseLookup: true),
204     (CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950; AllowReverseLookup: true),
205     (CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
206     (CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255; AllowReverseLookup: true),
207     (CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256; AllowReverseLookup: true),
208     (CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257; AllowReverseLookup: true),
209     (CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
210     (CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
211     (CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866; AllowReverseLookup: true),
212     (CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866; AllowReverseLookup: true),
213     (CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258; AllowReverseLookup: true),
214     (CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874; AllowReverseLookup: true),
215     (CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
216     (CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943; AllowReverseLookup: true),
217     (CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936; AllowReverseLookup: true)
218     );
219    
220    
221    
222    
223 tony 45 { TFBAttachment }
224    
225 tony 117 procedure TFBAttachment.GetODSAndConnectionInfo;
226     var DBInfo: IDBInformation;
227     i: integer;
228     Stmt: IStatement;
229     ResultSet: IResultSet;
230     Param: IDPBItem;
231     begin
232     if not IsConnected then Exit;
233     DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
234     isc_info_db_SQL_Dialect]);
235     for i := 0 to DBInfo.GetCount - 1 do
236     with DBInfo[i] do
237     case getItemType of
238     isc_info_ods_minor_version:
239     FODSMinorVersion := getAsInteger;
240     isc_info_ods_version:
241     FODSMajorVersion := getAsInteger;
242     isc_info_db_SQL_Dialect:
243     FSQLDialect := getAsInteger;
244     end;
245    
246     if (FODSMajorVersion > 11) or ((FODSMajorVersion = 11) and (FODSMinorVersion >= 1)) then
247     begin
248     Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
249     'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL From MON$ATTACHMENTS '+
250     'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION');
251     ResultSet := Stmt.OpenCursor;
252     if ResultSet.FetchNext then
253     begin
254     FCharSetID := ResultSet[0].AsInteger;
255     FRemoteProtocol := ResultSet[1].AsString;
256     end
257     end
258     else
259     if DPB <> nil then
260     begin
261     Param := DPB.Find(isc_dpb_lc_ctype);
262     if (Param = nil) or not CharSetName2CharSetID(Param.AsString,FCharSetID) then
263     FCharSetID := 0;
264     FRemoteProtocol := '';
265     end
266     else
267     begin
268     FCharSetID := 0;
269     FRemoteProtocol := '';
270     end;
271     FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
272     end;
273    
274 tony 56 constructor TFBAttachment.Create(DatabaseName: AnsiString; DPB: IDPB;
275 tony 45 RaiseExceptionOnConnectError: boolean);
276     begin
277     inherited Create;
278     FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
279     FSQLDialect := 3;
280     FDatabaseName := DatabaseName;
281     FDPB := DPB;
282 tony 60 SetLength(FUserCharSetMap,0);
283 tony 45 FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
284 tony 117 FODSMajorVersion := 0;
285     FODSMinorVersion := 0;
286 tony 45 end;
287    
288 tony 56 function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
289     var CreateParams: AnsiString;
290 tony 45 DPBItem: IDPBItem;
291     begin
292     CreateParams := '';
293    
294     if aDPB <> nil then
295     begin
296     DPBItem := aDPB.Find(isc_dpb_user_name);
297     if DPBItem <> nil then
298 tony 56 CreateParams := CreateParams + ' USER ''' + DPBItem.AsString + '''';
299 tony 45
300     DPBItem := aDPB.Find(isc_dpb_password);
301     if DPBItem <> nil then
302 tony 56 CreateParams := CreateParams + ' Password ''' + DPBItem.AsString + '''';
303 tony 45
304     DPBItem := aDPB.Find(isc_dpb_page_size);
305     if DPBItem <> nil then
306 tony 56 CreateParams := CreateParams + ' PAGE_SIZE ' + DPBItem.AsString;
307 tony 45
308     DPBItem := aDPB.Find(isc_dpb_lc_ctype);
309     if DPBItem <> nil then
310 tony 56 CreateParams := CreateParams + ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
311 tony 45
312     DPBItem := aDPB.Find(isc_dpb_sql_dialect);
313     if DPBItem <> nil then
314     FSQLDialect := DPBItem.AsInteger;
315     end;
316    
317     Result := 'CREATE DATABASE ''' + DatabaseName + ''' ' + CreateParams; {do not localize}
318     end;
319    
320     procedure TFBAttachment.EndAllTransactions;
321     var i: integer;
322     intf: TInterfacedObject;
323     begin
324     for i := 0 to InterfaceCount - 1 do
325     begin
326     intf := GetInterface(i);
327     if (intf <> nil) and (intf is TFBTransaction) then
328     TFBTransaction(intf).DoDefaultTransactionEnd(true);
329     end;
330     end;
331    
332 tony 117 procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
333     var RegexObj: TRegExpr;
334     begin
335     FDPB := FFirebirdAPI.AllocateDPB;
336     RegexObj := TRegExpr.Create;
337     try
338     {extact database file spec}
339     RegexObj.ModifierG := false; {turn off greedy matches}
340     RegexObj.ModifierI := true; {case insensitive match}
341     RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +USER +''(.+)'' PASSWORD +''(.+)''';
342     if RegexObj.Exec(CreateSQL) then
343     begin
344     DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
345     DPB.Add(isc_dpb_password).AsString := system.copy(CreateSQL,RegexObj.MatchPos[3],RegexObj.MatchLen[3]);
346     end
347     else
348     begin
349     RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'') +USER +''(.+)''';
350     if RegexObj.Exec(CreateSQL) then
351     DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
352     end;
353     finally
354     RegexObj.Free;
355     end;
356     if FCharSetID > 0 then
357     DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
358     DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
359     end;
360    
361 tony 45 procedure TFBAttachment.SetParameters(SQLParams: ISQLParams;
362     params: array of const);
363     var i: integer;
364     begin
365     if SQLParams.Count <> Length(params) then
366     IBError(ibxeInvalidParamCount,[SQLParams.Count,Length(params)]);
367    
368     for i := 0 to High(params) do
369     begin
370     case params[i].vtype of
371     vtinteger :
372     SQLParams[i].AsInteger := params[i].vinteger;
373 tony 70 vtInt64:
374     SQLParams[i].AsInt64 := params[i].VInt64^;
375     {$IF declared (vtQWord)}
376     vtQWord:
377     SQLParams[i].AsInt64 := params[i].VQWord^;
378     {$IFEND}
379 tony 45 vtboolean :
380     SQLParams[i].AsBoolean := params[i].vboolean;
381     vtchar :
382     SQLParams[i].AsString := params[i].vchar;
383     vtextended :
384     SQLParams[i].AsDouble := params[i].VExtended^;
385     vtCurrency:
386     SQLParams[i].AsDouble := params[i].VCurrency^;
387     vtString :
388 tony 70 SQLParams[i].AsString := strpas(PChar(params[i].VString));
389 tony 45 vtPChar :
390     SQLParams[i].AsString := strpas(params[i].VPChar);
391     vtAnsiString :
392 tony 70 SQLParams[i].AsString := strpas(PAnsiChar(params[i].VAnsiString));
393 tony 45 vtVariant:
394     SQLParams[i].AsVariant := params[i].VVariant^;
395 tony 70 vtWideChar:
396     SQLParams[i].AsString := UTF8Encode(WideCharLenToString(@params[i].VWideChar,1));
397     vtPWideChar:
398     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VPWideChar)));
399     vtWideString:
400     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VWideString)));
401     vtUnicodeString:
402     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VUnicodeString)));
403 tony 45 else
404     IBError(ibxeInvalidVariantType,[nil]);
405     end;
406     end;
407     end;
408    
409     destructor TFBAttachment.Destroy;
410     begin
411     Disconnect(true);
412     inherited Destroy;
413     end;
414    
415     function TFBAttachment.getDPB: IDPB;
416     begin
417     Result := FDPB;
418     end;
419    
420     function TFBAttachment.AllocateBPB: IBPB;
421     begin
422     Result := TBPB.Create;
423     end;
424    
425 tony 56 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
426 tony 45 aSQLDialect: integer);
427     begin
428     ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
429     end;
430    
431 tony 56 procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
432 tony 45 begin
433     ExecImmediate(transaction,sql,FSQLDialect);
434     end;
435    
436 tony 56 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
437 tony 45 begin
438     ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
439     end;
440    
441 tony 56 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
442 tony 45 SQLDialect: integer; params: array of const): IResults;
443     begin
444 tony 117 Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,SQLDialect,params);
445 tony 45 end;
446    
447 tony 56 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
448 tony 45 SQLDialect: integer; params: array of const): IResults;
449     begin
450     with Prepare(transaction,sql,SQLDialect) do
451     begin
452     SetParameters(SQLParams,params);
453     Result := Execute;
454     end;
455     end;
456    
457 tony 56 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
458 tony 45 params: array of const): IResults;
459     begin
460     Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
461     end;
462    
463 tony 56 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
464 tony 45 params: array of const): IResults;
465     begin
466     with Prepare(transaction,sql,FSQLDialect) do
467     begin
468     SetParameters(SQLParams,params);
469     Result := Execute;
470     end;
471     end;
472    
473 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
474 tony 45 aSQLDialect: integer): IResultSet;
475     begin
476     Result := OpenCursor(transaction,sql,aSQLDialect,[]);
477     end;
478    
479 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
480 tony 45 aSQLDialect: integer; params: array of const): IResultSet;
481     var Statement: IStatement;
482     begin
483     CheckHandle;
484     Statement := Prepare(transaction,sql,aSQLDialect);
485     SetParameters(Statement.SQLParams,params);
486     Result := Statement.OpenCursor;
487     end;
488    
489 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString
490 tony 45 ): IResultSet;
491     begin
492     Result := OpenCursor(transaction,sql,FSQLDialect,[]);
493     end;
494    
495 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
496 tony 45 params: array of const): IResultSet;
497     begin
498     Result := OpenCursor(transaction,sql,FSQLDialect,params);
499     end;
500    
501     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
502 tony 56 sql: AnsiString; aSQLDialect: integer): IResultSet;
503 tony 45 begin
504     Result := OpenCursor(transaction,sql,aSQLDialect,[]);
505     Result.FetchNext;
506     end;
507    
508     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
509 tony 56 sql: AnsiString; aSQLDialect: integer; params: array of const): IResultSet;
510 tony 45 begin
511     Result := OpenCursor(transaction,sql,aSQLDialect,params);
512     Result.FetchNext;
513     end;
514    
515 tony 56 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: AnsiString
516 tony 45 ): IResultSet;
517     begin
518     Result := OpenCursorAtStart(transaction,sql,FSQLDialect,[]);
519     end;
520    
521     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
522 tony 56 sql: AnsiString; params: array of const): IResultSet;
523 tony 45 begin
524     Result := OpenCursorAtStart(transaction,sql,FSQLDialect,params);
525     end;
526    
527 tony 56 function TFBAttachment.OpenCursorAtStart(sql: AnsiString): IResultSet;
528 tony 45 begin
529     Result := OpenCursorAtStart(sql,[]);
530     end;
531    
532 tony 56 function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
533 tony 45 params: array of const): IResultSet;
534     begin
535     Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,params);
536     end;
537    
538 tony 56 function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString
539 tony 45 ): IStatement;
540     begin
541     Result := Prepare(transaction,sql,FSQLDialect);
542     end;
543    
544     function TFBAttachment.PrepareWithNamedParameters(transaction: ITransaction;
545 tony 56 sql: AnsiString; GenerateParamNames: boolean): IStatement;
546 tony 45 begin
547     Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames);
548     end;
549    
550 tony 56 function TFBAttachment.GetEventHandler(Event: AnsiString): IEvents;
551 tony 45 var S: TStringList;
552     begin
553     S := TStringList.Create;
554     try
555     S.Add(Event);
556     Result := GetEventHandler(S);
557     finally
558     S.Free;
559     end;
560     end;
561    
562     function TFBAttachment.GetSQLDialect: integer;
563     begin
564     Result := FSQLDialect;
565     end;
566    
567     function TFBAttachment.OpenBlob(transaction: ITransaction; Field: ISQLData;
568     BPB: IBPB): IBlob;
569     begin
570     Result := OpenBlob(Transaction,Field.GetBlobMetadata, Field.AsQuad,BPB);
571     end;
572    
573 tony 117 function TFBAttachment.GetConnectString: AnsiString;
574     begin
575     Result := FDatabaseName;
576     end;
577    
578     function TFBAttachment.GetRemoteProtocol: AnsiString;
579     begin
580     Result := FRemoteProtocol;
581     end;
582    
583     function TFBAttachment.GetODSMajorVersion: integer;
584     begin
585     Result := FODSMajorVersion;
586     end;
587    
588     function TFBAttachment.GetODSMinorVersion: integer;
589     begin
590     Result := FODSMinorVersion;
591     end;
592    
593 tony 109 function TFBAttachment.HasDefaultCharSet: boolean;
594     begin
595     Result := FHasDefaultCharSet
596     end;
597    
598     function TFBAttachment.GetDefaultCharSetID: integer;
599     begin
600     Result := FCharsetID;
601     end;
602    
603 tony 60 function TFBAttachment.GetCharsetName(CharSetID: integer): AnsiString;
604     var i: integer;
605     begin
606     Result := '';
607     if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
608     (CharSetMap[CharSetID].CharSetID = CharSetID) then
609     begin
610     Result := CharSetMap[CharSetID].CharSetName;
611     Exit;
612     end;
613    
614     for i := 0 to Length(FUserCharSetMap) - 1 do
615     if FUserCharSetMap[i].CharSetID = CharSetID then
616     begin
617     Result := FUserCharSetMap[i].CharSetName;
618     Exit;
619     end;
620     end;
621    
622     function TFBAttachment.CharSetID2CodePage(CharSetID: integer;
623     var CodePage: TSystemCodePage): boolean;
624     var i: integer;
625     begin
626     Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
627     and (CharSetMap[CharSetID].CharSetID = CharSetID);
628     if Result then
629     begin
630     CodePage := CharSetMap[CharSetID].CodePage;
631     Result := true;
632     Exit;
633     end;
634    
635     for i := 0 to Length(FUserCharSetMap) - 1 do
636     if FUserCharSetMap[i].CharSetID = CharSetID then
637     begin
638     CodePage := FUserCharSetMap[i].CodePage;
639     Result := true;
640     Exit;
641     end;
642     end;
643    
644     function TFBAttachment.CodePage2CharSetID(CodePage: TSystemCodePage;
645     var CharSetID: integer): boolean;
646     var i: integer;
647     begin
648     Result := false;
649     for i := Low(CharSetMap) to High(CharSetMap) do
650     if (CharSetMap[i].AllowReverseLookup) and (CharSetMap[i].CodePage = CodePage) then
651     begin
652     CharSetID := CharSetMap[i].CharSetID;
653     Result := true;
654     Exit;
655     end;
656    
657     for i := 0 to Length(FUserCharSetMap) - 1 do
658     if (FUserCharSetMap[i].AllowReverseLookup) and (FUserCharSetMap[i].CodePage = CodePage) then
659     begin
660     CharSetID := FUserCharSetMap[i].CharSetID;
661     Result := true;
662     Exit;
663     end;
664     end;
665    
666     function TFBAttachment.CharSetName2CharSetID(CharSetName: AnsiString;
667     var CharSetID: integer): boolean;
668     var i: integer;
669     begin
670     Result := false;
671     for i := Low(CharSetMap) to High(CharSetMap) do
672     if AnsiCompareStr(CharSetMap[i].CharSetName, CharSetName) = 0 then
673     begin
674     CharSetID := CharSetMap[i].CharSetID;
675     Result := true;
676     Exit;
677     end;
678    
679     for i := 0 to Length(FUserCharSetMap) - 1 do
680     if AnsiCompareStr(FUserCharSetMap[i].CharSetName, CharSetName) = 0 then
681     begin
682     CharSetID := FUserCharSetMap[i].CharSetID;
683     Result := true;
684     Exit;
685     end;
686     end;
687    
688     function TFBAttachment.CharSetWidth(CharSetID: integer; var Width: integer
689     ): boolean;
690     var i: integer;
691     begin
692     Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
693     and (CharSetMap[CharSetID].CharSetID = CharSetID);
694     if Result then
695     begin
696     Width := CharSetMap[CharSetID].CharSetWidth;
697     Result := true;
698     Exit;
699     end;
700    
701     for i := 0 to Length(FUserCharSetMap) - 1 do
702     if FUserCharSetMap[i].CharSetID = CharSetID then
703     begin
704     Width := FUserCharSetMap[i].CharSetWidth;
705     Result := true;
706     Exit;
707     end;
708     end;
709    
710     const
711     sqlLookupCharSet = 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER From RDB$CHARACTER_SETS '+
712     'Where RDB$SYSTEM_FLAG = 0 and RDB$CHARACTER_SET_NAME = UPPER(?)';
713    
714     procedure TFBAttachment.RegisterCharSet(CharSetName: AnsiString;
715     CodePage: TSystemCodePage; AllowReverseLookup: boolean; out CharSetID: integer
716     );
717     var CharSets: IResultSet;
718     idx: integer;
719     begin
720     if CharSetName2CharSetID(CharSetName,CharSetID) then
721     IBError(ibxeCharacterSetExists,[CharSetName]);
722    
723     CharSets := OpenCursorAtStart(sqlLookupCharSet,[CharSetName]);
724     if CharSets.IsEof then
725     IBError(ibxeUnknownUserCharSet,[CharSetName]);
726    
727     idx := Length(FUserCharSetMap);
728     SetLength(FUserCharSetMap,idx+1);
729     FUserCharSetMap[idx].AllowReverseLookup := AllowReverseLookup;
730     FUserCharSetMap[idx].CharSetID := CharSets[0].AsInteger;
731     FUserCharSetMap[idx].CharSetName := AnsiUpperCase(CharSetName);
732     FUserCharSetMap[idx].CharSetWidth := CharSets[1].AsInteger;
733     FUserCharSetMap[idx].CodePage := CodePage;
734     CharSetID := CharSets[0].AsInteger;
735     end;
736    
737 tony 45 end.
738