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root/public/ibx/trunk/fbintf/client/FBAttachment.pas
Revision: 315
Committed: Thu Feb 25 11:56:36 2021 UTC (3 years, 8 months ago) by tony
Content type: text/x-pascal
File size: 38854 byte(s)
Log Message: 
Updated for IBX 4 release

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 tony 118 {$define HASREQEX}
36 tony 45 {$ENDIF}
37    
38     interface
39    
40     uses
41 tony 263 Classes, SysUtils, {$IFDEF WINDOWS} windows, {$ENDIF} IB, FBParamBlock,
42     FBActivityMonitor, FBClientAPI;
43 tony 45
44     type
45 tony 60 TCharsetMap = record
46     CharsetID: integer;
47     CharSetName: AnsiString;
48     CharSetWidth: integer;
49     CodePage: TSystemCodePage;
50     AllowReverseLookup: boolean; {used to ensure that lookup of CP_UTF* does not return UNICODE_FSS}
51     end;
52 tony 45
53     { TFBAttachment }
54    
55     TFBAttachment = class(TActivityHandler)
56     private
57     FDPB: IDPB;
58     FFirebirdAPI: IFirebirdAPI;
59 tony 117 FODSMajorVersion: integer;
60     FODSMinorVersion: integer;
61 tony 60 FUserCharSetMap: array of TCharSetMap;
62 tony 209 FSecDatabase: AnsiString;
63 tony 45 protected
64 tony 56 FDatabaseName: AnsiString;
65 tony 45 FRaiseExceptionOnConnectError: boolean;
66     FSQLDialect: integer;
67     FHasDefaultCharSet: boolean;
68     FCharSetID: integer;
69     FCodePage: TSystemCodePage;
70 tony 117 FRemoteProtocol: AnsiString;
71 tony 143 FAuthMethod: AnsiString;
72 tony 263 constructor Create(api: TFBClientAPI; DatabaseName: AnsiString; DPB: IDPB;
73 tony 45 RaiseExceptionOnConnectError: boolean);
74     procedure CheckHandle; virtual; abstract;
75 tony 56 function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
76 tony 117 procedure GetODSAndConnectionInfo;
77 tony 143 function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; virtual; abstract;
78 tony 117 function IsConnected: boolean; virtual; abstract;
79 tony 45 procedure EndAllTransactions;
80 tony 117 procedure DPBFromCreateSQL(CreateSQL: AnsiString);
81 tony 45 procedure SetParameters(SQLParams: ISQLParams; params: array of const);
82 tony 315 procedure UseServerICUChanged; virtual;
83 tony 45 public
84     destructor Destroy; override;
85 tony 263 function getFirebirdAPI: IFirebirdAPI;
86 tony 45 function getDPB: IDPB;
87     function AllocateBPB: IBPB;
88 tony 143 function AllocateDIRB: IDIRB;
89 tony 45 function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
90     function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
91     procedure Disconnect(Force: boolean=false); virtual; abstract;
92 tony 56 procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
93     procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
94     procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
95     procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
96     function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
97     function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
98     function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
99     function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
100     function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
101     function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
102 tony 45 params: array of const): IResultSet; overload;
103 tony 56 function OpenCursor(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
104     function OpenCursor(transaction: ITransaction; sql: AnsiString;
105 tony 45 params: array of const): IResultSet; overload;
106 tony 56 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
107     function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
108 tony 45 params: array of const): IResultSet; overload;
109 tony 56 function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
110     function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
111 tony 45 params: array of const): IResultSet; overload;
112 tony 56 function OpenCursorAtStart(sql: AnsiString): IResultSet; overload;
113     function OpenCursorAtStart(sql: AnsiString;
114 tony 45 params: array of const): IResultSet; overload;
115 tony 56 function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload; virtual; abstract;
116     function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
117     function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
118 tony 270 aSQLDialect: integer; GenerateParamNames: boolean=false;
119     CaseSensitiveParams: boolean = false): IStatement; overload; virtual; abstract;
120 tony 56 function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
121 tony 270 GenerateParamNames: boolean=false;
122     CaseSensitiveParams: boolean = false): IStatement; overload;
123 tony 45 function GetEventHandler(Events: TStrings): IEvents; overload; virtual; abstract;
124 tony 56 function GetEventHandler(Event: AnsiString): IEvents; overload;
125 tony 45
126     function GetSQLDialect: integer;
127 tony 291 function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
128     function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
129 tony 56 function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
130 tony 291 function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
131 tony 45 function OpenBlob(transaction: ITransaction; Field: ISQLData; BPB: IBPB=nil): IBlob; overload;
132 tony 291 function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
133     ): IArray; overload;
134     function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; virtual; abstract;
135     function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray; overload;
136     function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; virtual; abstract;
137 tony 45 property SQLDialect: integer read FSQLDialect;
138     property DPB: IDPB read FDPB;
139 tony 315 public
140     function GetDBInformation(Requests: array of byte): IDBInformation; overload;
141     function GetDBInformation(Request: byte): IDBInformation; overload;
142     function GetDBInformation(Requests: IDIRB): IDBInformation; overload;
143     function GetConnectString: AnsiString;
144     function GetRemoteProtocol: AnsiString;
145     function GetAuthenticationMethod: AnsiString;
146     function GetSecurityDatabase: AnsiString;
147     function GetODSMajorVersion: integer;
148     function GetODSMinorVersion: integer;
149     function HasDecFloatSupport: boolean; virtual;
150    
151     public
152     {Character Sets}
153     function HasDefaultCharSet: boolean;
154     function GetDefaultCharSetID: integer;
155     function GetCharsetName(CharSetID: integer): AnsiString;
156     function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
157     function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
158     function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
159     function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
160     procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
161     AllowReverseLookup:boolean; out CharSetID: integer);
162     function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; virtual; abstract;
163     function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; virtual; abstract;
164     property CharSetID: integer read FCharSetID;
165     property CodePage: TSystemCodePage read FCodePage;
166    
167     public
168     {Time Zone Support}
169     function GetTimeZoneServices: ITimeZoneServices; virtual;
170     function HasTimeZoneSupport: boolean; virtual;
171    
172 tony 45 end;
173    
174 tony 315 { TDPBItem }
175    
176     TDPBItem = class(TParamBlockItem,IDPBItem)
177     public
178     function getParamTypeName: AnsiString; override;
179     end;
180    
181     { TDPB }
182    
183     TDPB = class (TCustomParamBlock<TDPBItem,IDPBItem>, IDPB)
184     protected
185     function LookupItemType(ParamTypeName: AnsiString): byte; override;
186     public
187     constructor Create(api: TFBClientAPI);
188     function GetDPBParamTypeName(ParamType: byte): Ansistring;
189     end;
190    
191 tony 45 implementation
192    
193 tony 143 uses FBMessages, IBUtils, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
194 tony 45
195 tony 60 const
196     CharSetMap: array [0..69] of TCharsetMap = (
197     (CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP; AllowReverseLookup: true),
198     (CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
199     (CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII; AllowReverseLookup: true),
200     (CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8; AllowReverseLookup: false),
201     (CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8; AllowReverseLookup: true),
202     (CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
203     (CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
204     (CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
205     (CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
206     (CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737; AllowReverseLookup: true),
207     (CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437; AllowReverseLookup: true),
208     (CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850; AllowReverseLookup: true),
209     (CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865; AllowReverseLookup: true),
210     (CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860; AllowReverseLookup: true),
211     (CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863; AllowReverseLookup: true),
212     (CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775; AllowReverseLookup: true),
213     (CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858; AllowReverseLookup: true),
214     (CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862; AllowReverseLookup: true),
215     (CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864; AllowReverseLookup: true),
216     (CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
217     (CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
218     (CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591; AllowReverseLookup: true),
219     (CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592; AllowReverseLookup: true),
220     (CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593; AllowReverseLookup: true),
221     (CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
222     (CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
223     (CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
224     (CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
225     (CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
226     (CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
227     (CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
228     (CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
229     (CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
230     (CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
231     (CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594; AllowReverseLookup: true),
232     (CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595; AllowReverseLookup: true),
233     (CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596; AllowReverseLookup: true),
234     (CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597; AllowReverseLookup: true),
235     (CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598; AllowReverseLookup: true),
236     (CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599; AllowReverseLookup: true),
237     (CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603; AllowReverseLookup: true),
238     (CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
239     (CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
240     (CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
241     (CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949; AllowReverseLookup: true),
242     (CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852; AllowReverseLookup: true),
243     (CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857; AllowReverseLookup: true),
244     (CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861; AllowReverseLookup: true),
245     (CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866; AllowReverseLookup: true),
246     (CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869; AllowReverseLookup: true),
247     (CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
248     (CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250; AllowReverseLookup: true),
249     (CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
250     (CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252; AllowReverseLookup: true),
251     (CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253; AllowReverseLookup: true),
252     (CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254; AllowReverseLookup: true),
253     (CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950; AllowReverseLookup: true),
254     (CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
255     (CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255; AllowReverseLookup: true),
256     (CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256; AllowReverseLookup: true),
257     (CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257; AllowReverseLookup: true),
258     (CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
259     (CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
260     (CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866; AllowReverseLookup: true),
261     (CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866; AllowReverseLookup: true),
262     (CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258; AllowReverseLookup: true),
263     (CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874; AllowReverseLookup: true),
264     (CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
265     (CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943; AllowReverseLookup: true),
266     (CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936; AllowReverseLookup: true)
267     );
268    
269 tony 315 const
270     isc_dpb_last_dpb_constant = isc_dpb_decfloat_traps;
271 tony 60
272 tony 315 DPBConstantNames: array[1..isc_dpb_last_dpb_constant] of string = (
273     'cdd_pathname',
274     'allocation',
275     'journal',
276     'page_size',
277     'num_buffers',
278     'buffer_length',
279     'debug',
280     'garbage_collect',
281     'verify',
282     'sweep',
283     'enable_journal',
284     'disable_journal',
285     'dbkey_scope',
286     'number_of_users',
287     'trace',
288     'no_garbage_collect',
289     'damaged',
290     'license',
291     'sys_user_name',
292     'encrypt_key',
293     'activate_shadow',
294     'sweep_interval',
295     'delete_shadow',
296     'force_write',
297     'begin_log',
298     'quit_log',
299     'no_reserve',
300     'user_name',
301     'password',
302     'password_enc',
303     'sys_user_name_enc',
304     'interp',
305     'online_dump',
306     'old_file_size',
307     'old_num_files',
308     'old_file',
309     'old_start_page',
310     'old_start_seqno',
311     'old_start_file',
312     'drop_walfile',
313     'old_dump_id',
314     'wal_backup_dir',
315     'wal_chkptlen',
316     'wal_numbufs',
317     'wal_bufsize',
318     'wal_grp_cmt_wait',
319     'lc_messages',
320     'lc_ctype',
321     'cache_manager',
322     'shutdown',
323     'online',
324     'shutdown_delay',
325     'reserved',
326     'overwrite',
327     'sec_attach',
328     'disable_wal',
329     'connect_timeout',
330     'dummy_packet_interval',
331     'gbak_attach',
332     'sql_role_name',
333     'set_page_buffers',
334     'working_directory',
335     'sql_dialect',
336     'set_db_readonly',
337     'set_db_sql_dialect',
338     'gfix_attach',
339     'gstat_attach',
340     'set_db_charset',
341     'gsec_attach',
342     'address_path' ,
343     'process_id',
344     'no_db_triggers',
345     'trusted_auth',
346     'process_name',
347     'trusted_role',
348     'org_filename',
349     'utf8_ilename',
350     'ext_call_depth',
351     'auth_block',
352     'client_version',
353     'remote_protocol',
354     'host_name',
355     'os_user',
356     'specific_auth_data',
357     'auth_plugin_list',
358     'auth_plugin_name',
359     'config',
360     'nolinger',
361     'reset_icu',
362     'map_attach',
363     'session_time_zone',
364     'set_db_replica',
365     'set_bind',
366     'decfloat_round',
367     'decfloat_traps'
368     );
369 tony 60
370    
371 tony 315
372 tony 45 { TFBAttachment }
373    
374 tony 117 procedure TFBAttachment.GetODSAndConnectionInfo;
375     var DBInfo: IDBInformation;
376     i: integer;
377     Stmt: IStatement;
378     ResultSet: IResultSet;
379     Param: IDPBItem;
380     begin
381     if not IsConnected then Exit;
382     DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
383     isc_info_db_SQL_Dialect]);
384     for i := 0 to DBInfo.GetCount - 1 do
385     with DBInfo[i] do
386     case getItemType of
387     isc_info_ods_minor_version:
388     FODSMinorVersion := getAsInteger;
389     isc_info_ods_version:
390     FODSMajorVersion := getAsInteger;
391     isc_info_db_SQL_Dialect:
392     FSQLDialect := getAsInteger;
393     end;
394    
395 tony 143 FCharSetID := 0;
396     FRemoteProtocol := '';
397     FAuthMethod := 'Legacy_Auth';
398 tony 209 FSecDatabase := 'Default';
399 tony 143 if FODSMajorVersion > 11 then
400 tony 117 begin
401     Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
402 tony 209 'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL, MON$AUTH_METHOD, MON$SEC_DATABASE From MON$ATTACHMENTS, MON$DATABASE '+
403 tony 315 'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION ');
404 tony 143 ResultSet := Stmt.OpenCursor;
405     if ResultSet.FetchNext then
406     begin
407     FCharSetID := ResultSet[0].AsInteger;
408 tony 209 FRemoteProtocol := Trim(ResultSet[1].AsString);
409     FAuthMethod := Trim(ResultSet[2].AsString);
410     FSecDatabase := Trim(ResultSet[3].AsString);
411 tony 143 end
412     end
413     else
414     if (FODSMajorVersion = 11) and (FODSMinorVersion >= 1) then
415     begin
416     Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
417 tony 117 'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL From MON$ATTACHMENTS '+
418     'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION');
419     ResultSet := Stmt.OpenCursor;
420     if ResultSet.FetchNext then
421     begin
422     FCharSetID := ResultSet[0].AsInteger;
423 tony 209 FRemoteProtocol := Trim(ResultSet[1].AsString);
424 tony 117 end
425     end
426     else
427     if DPB <> nil then
428     begin
429     Param := DPB.Find(isc_dpb_lc_ctype);
430     if (Param = nil) or not CharSetName2CharSetID(Param.AsString,FCharSetID) then
431     FCharSetID := 0;
432 tony 143 case GetProtocol(FDatabaseName) of
433     TCP: FRemoteProtocol := 'TCPv4';
434     Local: FRemoteProtocol := '';
435     NamedPipe: FRemoteProtocol := 'Netbui';
436     SPX: FRemoteProtocol := 'SPX'
437     end;
438 tony 117 end;
439     FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
440     end;
441    
442 tony 263 constructor TFBAttachment.Create(api: TFBClientAPI; DatabaseName: AnsiString;
443     DPB: IDPB; RaiseExceptionOnConnectError: boolean);
444 tony 45 begin
445     inherited Create;
446 tony 263 FFirebirdAPI := api.GetAPI; {Keep reference to interface}
447 tony 45 FSQLDialect := 3;
448     FDatabaseName := DatabaseName;
449     FDPB := DPB;
450 tony 60 SetLength(FUserCharSetMap,0);
451 tony 45 FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
452 tony 117 FODSMajorVersion := 0;
453     FODSMinorVersion := 0;
454 tony 45 end;
455    
456 tony 56 function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
457     var CreateParams: AnsiString;
458 tony 45 DPBItem: IDPBItem;
459     begin
460     CreateParams := '';
461    
462     if aDPB <> nil then
463     begin
464     DPBItem := aDPB.Find(isc_dpb_user_name);
465     if DPBItem <> nil then
466 tony 56 CreateParams := CreateParams + ' USER ''' + DPBItem.AsString + '''';
467 tony 45
468     DPBItem := aDPB.Find(isc_dpb_password);
469     if DPBItem <> nil then
470 tony 56 CreateParams := CreateParams + ' Password ''' + DPBItem.AsString + '''';
471 tony 45
472     DPBItem := aDPB.Find(isc_dpb_page_size);
473     if DPBItem <> nil then
474 tony 56 CreateParams := CreateParams + ' PAGE_SIZE ' + DPBItem.AsString;
475 tony 45
476     DPBItem := aDPB.Find(isc_dpb_lc_ctype);
477     if DPBItem <> nil then
478 tony 56 CreateParams := CreateParams + ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
479 tony 45
480     DPBItem := aDPB.Find(isc_dpb_sql_dialect);
481     if DPBItem <> nil then
482     FSQLDialect := DPBItem.AsInteger;
483     end;
484    
485     Result := 'CREATE DATABASE ''' + DatabaseName + ''' ' + CreateParams; {do not localize}
486     end;
487    
488     procedure TFBAttachment.EndAllTransactions;
489     var i: integer;
490     intf: TInterfacedObject;
491     begin
492     for i := 0 to InterfaceCount - 1 do
493     begin
494     intf := GetInterface(i);
495     if (intf <> nil) and (intf is TFBTransaction) then
496     TFBTransaction(intf).DoDefaultTransactionEnd(true);
497     end;
498     end;
499    
500 tony 118 {$IFDEF HASREQEX}
501 tony 117 procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
502     var RegexObj: TRegExpr;
503     begin
504     FDPB := FFirebirdAPI.AllocateDPB;
505     RegexObj := TRegExpr.Create;
506     try
507     {extact database file spec}
508     RegexObj.ModifierG := false; {turn off greedy matches}
509     RegexObj.ModifierI := true; {case insensitive match}
510     RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +USER +''(.+)'' PASSWORD +''(.+)''';
511     if RegexObj.Exec(CreateSQL) then
512     begin
513     DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
514     DPB.Add(isc_dpb_password).AsString := system.copy(CreateSQL,RegexObj.MatchPos[3],RegexObj.MatchLen[3]);
515     end
516     else
517     begin
518     RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'') +USER +''(.+)''';
519     if RegexObj.Exec(CreateSQL) then
520     DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
521     end;
522     finally
523     RegexObj.Free;
524     end;
525     if FCharSetID > 0 then
526     DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
527     DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
528     end;
529 tony 118 {$ELSE}
530     procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
531 tony 119 begin
532     FDPB := FFirebirdAPI.AllocateDPB;
533     if FCharSetID > 0 then
534     DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
535     DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
536 tony 118 end;
537     {$ENDIF}
538 tony 117
539 tony 45 procedure TFBAttachment.SetParameters(SQLParams: ISQLParams;
540     params: array of const);
541     var i: integer;
542     begin
543     if SQLParams.Count <> Length(params) then
544     IBError(ibxeInvalidParamCount,[SQLParams.Count,Length(params)]);
545    
546     for i := 0 to High(params) do
547     begin
548     case params[i].vtype of
549     vtinteger :
550     SQLParams[i].AsInteger := params[i].vinteger;
551 tony 70 vtInt64:
552     SQLParams[i].AsInt64 := params[i].VInt64^;
553     {$IF declared (vtQWord)}
554     vtQWord:
555     SQLParams[i].AsInt64 := params[i].VQWord^;
556     {$IFEND}
557 tony 45 vtboolean :
558     SQLParams[i].AsBoolean := params[i].vboolean;
559     vtchar :
560     SQLParams[i].AsString := params[i].vchar;
561     vtextended :
562     SQLParams[i].AsDouble := params[i].VExtended^;
563     vtCurrency:
564     SQLParams[i].AsDouble := params[i].VCurrency^;
565     vtString :
566 tony 70 SQLParams[i].AsString := strpas(PChar(params[i].VString));
567 tony 45 vtPChar :
568     SQLParams[i].AsString := strpas(params[i].VPChar);
569     vtAnsiString :
570 tony 70 SQLParams[i].AsString := strpas(PAnsiChar(params[i].VAnsiString));
571 tony 45 vtVariant:
572     SQLParams[i].AsVariant := params[i].VVariant^;
573 tony 70 vtWideChar:
574     SQLParams[i].AsString := UTF8Encode(WideCharLenToString(@params[i].VWideChar,1));
575     vtPWideChar:
576     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VPWideChar)));
577     vtWideString:
578     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VWideString)));
579     vtUnicodeString:
580     SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VUnicodeString)));
581 tony 45 else
582     IBError(ibxeInvalidVariantType,[nil]);
583     end;
584     end;
585     end;
586    
587 tony 315 procedure TFBAttachment.UseServerICUChanged;
588     begin
589     // Do nothing by default
590     end;
591    
592 tony 45 destructor TFBAttachment.Destroy;
593     begin
594     Disconnect(true);
595     inherited Destroy;
596     end;
597    
598 tony 263 function TFBAttachment.getFirebirdAPI: IFirebirdAPI;
599     begin
600     Result := FFirebirdAPI;
601     end;
602    
603 tony 45 function TFBAttachment.getDPB: IDPB;
604     begin
605     Result := FDPB;
606     end;
607    
608     function TFBAttachment.AllocateBPB: IBPB;
609     begin
610 tony 263 Result := TBPB.Create(FFirebirdAPI as TFBClientAPI);
611 tony 45 end;
612    
613 tony 143 function TFBAttachment.AllocateDIRB: IDIRB;
614     begin
615 tony 263 Result := TDIRB.Create(FFirebirdAPI as TFBClientAPI);
616 tony 143 end;
617    
618 tony 56 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
619 tony 45 aSQLDialect: integer);
620     begin
621     ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
622     end;
623    
624 tony 56 procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
625 tony 45 begin
626     ExecImmediate(transaction,sql,FSQLDialect);
627     end;
628    
629 tony 56 procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
630 tony 45 begin
631     ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
632     end;
633    
634 tony 56 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
635 tony 45 SQLDialect: integer; params: array of const): IResults;
636     begin
637 tony 117 Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,SQLDialect,params);
638 tony 45 end;
639    
640 tony 56 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
641 tony 45 SQLDialect: integer; params: array of const): IResults;
642     begin
643     with Prepare(transaction,sql,SQLDialect) do
644     begin
645     SetParameters(SQLParams,params);
646     Result := Execute;
647     end;
648     end;
649    
650 tony 56 function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
651 tony 45 params: array of const): IResults;
652     begin
653     Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
654     end;
655    
656 tony 56 function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
657 tony 45 params: array of const): IResults;
658     begin
659     with Prepare(transaction,sql,FSQLDialect) do
660     begin
661     SetParameters(SQLParams,params);
662     Result := Execute;
663     end;
664     end;
665    
666 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
667 tony 45 aSQLDialect: integer): IResultSet;
668     begin
669     Result := OpenCursor(transaction,sql,aSQLDialect,[]);
670     end;
671    
672 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
673 tony 45 aSQLDialect: integer; params: array of const): IResultSet;
674     var Statement: IStatement;
675     begin
676     CheckHandle;
677     Statement := Prepare(transaction,sql,aSQLDialect);
678     SetParameters(Statement.SQLParams,params);
679     Result := Statement.OpenCursor;
680     end;
681    
682 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString
683 tony 45 ): IResultSet;
684     begin
685     Result := OpenCursor(transaction,sql,FSQLDialect,[]);
686     end;
687    
688 tony 56 function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
689 tony 45 params: array of const): IResultSet;
690     begin
691     Result := OpenCursor(transaction,sql,FSQLDialect,params);
692     end;
693    
694     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
695 tony 56 sql: AnsiString; aSQLDialect: integer): IResultSet;
696 tony 45 begin
697     Result := OpenCursor(transaction,sql,aSQLDialect,[]);
698     Result.FetchNext;
699     end;
700    
701     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
702 tony 56 sql: AnsiString; aSQLDialect: integer; params: array of const): IResultSet;
703 tony 45 begin
704     Result := OpenCursor(transaction,sql,aSQLDialect,params);
705     Result.FetchNext;
706     end;
707    
708 tony 56 function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: AnsiString
709 tony 45 ): IResultSet;
710     begin
711     Result := OpenCursorAtStart(transaction,sql,FSQLDialect,[]);
712     end;
713    
714     function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
715 tony 56 sql: AnsiString; params: array of const): IResultSet;
716 tony 45 begin
717     Result := OpenCursorAtStart(transaction,sql,FSQLDialect,params);
718     end;
719    
720 tony 56 function TFBAttachment.OpenCursorAtStart(sql: AnsiString): IResultSet;
721 tony 45 begin
722     Result := OpenCursorAtStart(sql,[]);
723     end;
724    
725 tony 56 function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
726 tony 45 params: array of const): IResultSet;
727     begin
728     Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,params);
729     end;
730    
731 tony 56 function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString
732 tony 45 ): IStatement;
733     begin
734     Result := Prepare(transaction,sql,FSQLDialect);
735     end;
736    
737     function TFBAttachment.PrepareWithNamedParameters(transaction: ITransaction;
738 tony 270 sql: AnsiString; GenerateParamNames: boolean; CaseSensitiveParams: boolean): IStatement;
739 tony 45 begin
740 tony 270 Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames,CaseSensitiveParams);
741 tony 45 end;
742    
743 tony 56 function TFBAttachment.GetEventHandler(Event: AnsiString): IEvents;
744 tony 45 var S: TStringList;
745     begin
746     S := TStringList.Create;
747     try
748     S.Add(Event);
749     Result := GetEventHandler(S);
750     finally
751     S.Free;
752     end;
753     end;
754    
755     function TFBAttachment.GetSQLDialect: integer;
756     begin
757     Result := FSQLDialect;
758     end;
759    
760 tony 291 function TFBAttachment.CreateBlob(transaction: ITransaction; RelationName,
761     ColumnName: AnsiString; BPB: IBPB): IBlob;
762     begin
763     Result := CreateBlob(transaction,GetBlobMetaData(Transaction,RelationName,ColumnName),BPB);
764     end;
765    
766     function TFBAttachment.OpenBlob(transaction: ITransaction; RelationName,
767     ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
768     begin
769     Result := OpenBlob(Transaction,
770     GetBlobMetaData(Transaction,RelationName,ColumnName),
771     BlobID,BPB);
772     end;
773    
774 tony 45 function TFBAttachment.OpenBlob(transaction: ITransaction; Field: ISQLData;
775     BPB: IBPB): IBlob;
776     begin
777     Result := OpenBlob(Transaction,Field.GetBlobMetadata, Field.AsQuad,BPB);
778     end;
779    
780 tony 291 function TFBAttachment.CreateArray(transaction: ITransaction; RelationName,
781     ColumnName: AnsiString): IArray;
782     begin
783     Result := CreateArray(transaction,GetArrayMetaData(transaction,RelationName,ColumnName));
784     end;
785    
786     function TFBAttachment.OpenArray(transaction: ITransaction; RelationName,
787     ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray;
788     begin
789     Result := OpenArray(transaction,
790     GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
791     end;
792    
793 tony 143 function TFBAttachment.GetDBInformation(Requests: array of byte
794     ): IDBInformation;
795     var ReqBuffer: PByte;
796     i: integer;
797     begin
798     CheckHandle;
799     if Length(Requests) = 1 then
800     Result := GetDBInformation(Requests[0])
801     else
802     begin
803     GetMem(ReqBuffer,Length(Requests));
804     try
805     for i := 0 to Length(Requests) - 1 do
806     ReqBuffer[i] := Requests[i];
807    
808     Result := GetDBInfo(ReqBuffer,Length(Requests));
809    
810     finally
811     FreeMem(ReqBuffer);
812     end;
813     end;
814     end;
815    
816     function TFBAttachment.GetDBInformation(Request: byte): IDBInformation;
817     begin
818     CheckHandle;
819     Result := GetDBInfo(@Request,1);
820     end;
821    
822     function TFBAttachment.GetDBInformation(Requests: IDIRB): IDBInformation;
823     begin
824     CheckHandle;
825     with Requests as TDIRB do
826     Result := GetDBInfo(getBuffer,getDataLength);
827     end;
828    
829 tony 117 function TFBAttachment.GetConnectString: AnsiString;
830     begin
831     Result := FDatabaseName;
832     end;
833    
834     function TFBAttachment.GetRemoteProtocol: AnsiString;
835     begin
836     Result := FRemoteProtocol;
837     end;
838    
839 tony 143 function TFBAttachment.GetAuthenticationMethod: AnsiString;
840     begin
841     Result := FAuthMethod;
842     end;
843    
844 tony 209 function TFBAttachment.GetSecurityDatabase: AnsiString;
845     begin
846     Result := FSecDatabase;
847     end;
848    
849 tony 117 function TFBAttachment.GetODSMajorVersion: integer;
850     begin
851     Result := FODSMajorVersion;
852     end;
853    
854     function TFBAttachment.GetODSMinorVersion: integer;
855     begin
856     Result := FODSMinorVersion;
857     end;
858    
859 tony 315 function TFBAttachment.HasDecFloatSupport: boolean;
860     begin
861     Result := false;
862     end;
863    
864 tony 109 function TFBAttachment.HasDefaultCharSet: boolean;
865     begin
866     Result := FHasDefaultCharSet
867     end;
868    
869     function TFBAttachment.GetDefaultCharSetID: integer;
870     begin
871     Result := FCharsetID;
872     end;
873    
874 tony 60 function TFBAttachment.GetCharsetName(CharSetID: integer): AnsiString;
875     var i: integer;
876     begin
877     Result := '';
878     if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
879     (CharSetMap[CharSetID].CharSetID = CharSetID) then
880     begin
881     Result := CharSetMap[CharSetID].CharSetName;
882     Exit;
883     end;
884    
885     for i := 0 to Length(FUserCharSetMap) - 1 do
886     if FUserCharSetMap[i].CharSetID = CharSetID then
887     begin
888     Result := FUserCharSetMap[i].CharSetName;
889     Exit;
890     end;
891     end;
892    
893     function TFBAttachment.CharSetID2CodePage(CharSetID: integer;
894     var CodePage: TSystemCodePage): boolean;
895     var i: integer;
896     begin
897     Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
898     and (CharSetMap[CharSetID].CharSetID = CharSetID);
899     if Result then
900     begin
901     CodePage := CharSetMap[CharSetID].CodePage;
902     Result := true;
903     Exit;
904     end;
905    
906     for i := 0 to Length(FUserCharSetMap) - 1 do
907     if FUserCharSetMap[i].CharSetID = CharSetID then
908     begin
909     CodePage := FUserCharSetMap[i].CodePage;
910     Result := true;
911     Exit;
912     end;
913     end;
914    
915     function TFBAttachment.CodePage2CharSetID(CodePage: TSystemCodePage;
916     var CharSetID: integer): boolean;
917     var i: integer;
918     begin
919     Result := false;
920     for i := Low(CharSetMap) to High(CharSetMap) do
921     if (CharSetMap[i].AllowReverseLookup) and (CharSetMap[i].CodePage = CodePage) then
922     begin
923     CharSetID := CharSetMap[i].CharSetID;
924     Result := true;
925     Exit;
926     end;
927    
928     for i := 0 to Length(FUserCharSetMap) - 1 do
929     if (FUserCharSetMap[i].AllowReverseLookup) and (FUserCharSetMap[i].CodePage = CodePage) then
930     begin
931     CharSetID := FUserCharSetMap[i].CharSetID;
932     Result := true;
933     Exit;
934     end;
935     end;
936    
937     function TFBAttachment.CharSetName2CharSetID(CharSetName: AnsiString;
938     var CharSetID: integer): boolean;
939     var i: integer;
940     begin
941     Result := false;
942     for i := Low(CharSetMap) to High(CharSetMap) do
943 tony 233 if AnsiCompareText(CharSetMap[i].CharSetName, CharSetName) = 0 then
944 tony 60 begin
945     CharSetID := CharSetMap[i].CharSetID;
946     Result := true;
947     Exit;
948     end;
949    
950     for i := 0 to Length(FUserCharSetMap) - 1 do
951 tony 233 if AnsiCompareText(FUserCharSetMap[i].CharSetName, CharSetName) = 0 then
952 tony 60 begin
953     CharSetID := FUserCharSetMap[i].CharSetID;
954     Result := true;
955     Exit;
956     end;
957     end;
958    
959     function TFBAttachment.CharSetWidth(CharSetID: integer; var Width: integer
960     ): boolean;
961     var i: integer;
962     begin
963     Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
964     and (CharSetMap[CharSetID].CharSetID = CharSetID);
965     if Result then
966     begin
967     Width := CharSetMap[CharSetID].CharSetWidth;
968     Result := true;
969     Exit;
970     end;
971    
972     for i := 0 to Length(FUserCharSetMap) - 1 do
973     if FUserCharSetMap[i].CharSetID = CharSetID then
974     begin
975     Width := FUserCharSetMap[i].CharSetWidth;
976     Result := true;
977     Exit;
978     end;
979     end;
980    
981     const
982     sqlLookupCharSet = 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER From RDB$CHARACTER_SETS '+
983     'Where RDB$SYSTEM_FLAG = 0 and RDB$CHARACTER_SET_NAME = UPPER(?)';
984    
985     procedure TFBAttachment.RegisterCharSet(CharSetName: AnsiString;
986     CodePage: TSystemCodePage; AllowReverseLookup: boolean; out CharSetID: integer
987     );
988     var CharSets: IResultSet;
989     idx: integer;
990     begin
991     if CharSetName2CharSetID(CharSetName,CharSetID) then
992     IBError(ibxeCharacterSetExists,[CharSetName]);
993    
994     CharSets := OpenCursorAtStart(sqlLookupCharSet,[CharSetName]);
995     if CharSets.IsEof then
996     IBError(ibxeUnknownUserCharSet,[CharSetName]);
997    
998     idx := Length(FUserCharSetMap);
999     SetLength(FUserCharSetMap,idx+1);
1000     FUserCharSetMap[idx].AllowReverseLookup := AllowReverseLookup;
1001     FUserCharSetMap[idx].CharSetID := CharSets[0].AsInteger;
1002     FUserCharSetMap[idx].CharSetName := AnsiUpperCase(CharSetName);
1003     FUserCharSetMap[idx].CharSetWidth := CharSets[1].AsInteger;
1004     FUserCharSetMap[idx].CodePage := CodePage;
1005     CharSetID := CharSets[0].AsInteger;
1006     end;
1007    
1008 tony 315 function TFBAttachment.GetTimeZoneServices: ITimeZoneServices;
1009     begin
1010     IBError(ibxeNotSupported,[]);
1011     end;
1012    
1013     function TFBAttachment.HasTimeZoneSupport: boolean;
1014     begin
1015     Result := false;
1016     end;
1017    
1018     { TDPBItem }
1019    
1020     function TDPBItem.getParamTypeName: AnsiString;
1021     begin
1022     Result := DPBPrefix + DPBConstantNames[getParamType];
1023     end;
1024    
1025     { TDPB }
1026    
1027     constructor TDPB.Create(api: TFBClientAPI);
1028     begin
1029     inherited Create(api);
1030     FDataLength := 1;
1031     FBuffer^ := isc_dpb_version1;
1032     end;
1033    
1034     function TDPB.GetDPBParamTypeName(ParamType: byte): Ansistring;
1035     begin
1036     if ParamType <= isc_dpb_last_dpb_constant then
1037     Result := DPBConstantNames[ParamType]
1038     else
1039     Result := '';
1040     end;
1041    
1042     function TDPB.LookupItemType(ParamTypeName: AnsiString): byte;
1043     var i: byte;
1044     begin
1045     Result := 0;
1046     ParamTypeName := LowerCase(ParamTypeName);
1047     if (Pos(DPBPrefix, ParamTypeName) = 1) then
1048     Delete(ParamTypeName, 1, Length(DPBPrefix));
1049    
1050     for i := 1 to isc_dpb_last_dpb_constant do
1051     if (ParamTypeName = DPBConstantNames[i]) then
1052     begin
1053     Result := i;
1054     break;
1055     end;
1056     end;
1057    
1058 tony 45 end.
1059