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Comparing ibx/trunk/runtime/IBDatabase.pas (file contents):
Revision 29 by tony, Sat May 9 11:37:49 2015 UTC vs.
Revision 118 by tony, Mon Jan 22 13:58:14 2018 UTC

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1 < {************************************************************************}
2 < {                                                                        }
3 < {       Borland Delphi Visual Component Library                          }
4 < {       InterBase Express core components                                }
5 < {                                                                        }
6 < {       Copyright (c) 1998-2000 Inprise Corporation                      }
7 < {                                                                        }
8 < {    InterBase Express is based in part on the product                   }
9 < {    Free IB Components, written by Gregory H. Deatz for                 }
10 < {    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
11 < {    Free IB Components is used under license.                           }
12 < {                                                                        }
13 < {    The contents of this file are subject to the InterBase              }
14 < {    Public License Version 1.0 (the "License"); you may not             }
15 < {    use this file except in compliance with the License. You            }
16 < {    may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17 < {    Software distributed under the License is distributed on            }
18 < {    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either              }
19 < {    express or implied. See the License for the specific language       }
20 < {    governing rights and limitations under the License.                 }
21 < {    The Original Code was created by InterBase Software Corporation     }
22 < {       and its successors.                                              }
23 < {    Portions created by Inprise Corporation are Copyright (C) Inprise   }
24 < {       Corporation. All Rights Reserved.                                }
25 < {    Contributor(s): Jeff Overcash                                       }
26 < {                                                                        }
27 < {    IBX For Lazarus (Firebird Express)                                  }
28 < {    Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29 < {    Portions created by MWA Software are copyright McCallum Whyman      }
30 < {    Associates Ltd 2011                                                 }
31 < {                                                                        }
32 < {************************************************************************}
33 <
34 < unit IBDatabase;
35 <
36 < {$Mode Delphi}
37 <
38 < interface
39 <
40 < uses
41 < {$IFDEF WINDOWS }
42 <  Windows,
43 < {$ELSE}
44 <  unix,
45 < {$ENDIF}
46 <  Dialogs, Controls, StdCtrls, SysUtils, Classes, Forms, ExtCtrls, IBHeader, IBExternals, DB,
47 <  IB, DBLoginDlg;
48 <
49 < const
50 <  DPBPrefix = 'isc_dpb_';
51 <  DPBConstantNames: array[1..isc_dpb_last_dpb_constant] of string = (
52 <    'cdd_pathname',
53 <    'allocation',
54 <    'journal',
55 <    'page_size',
56 <    'num_buffers',
57 <    'buffer_length',
58 <    'debug',
59 <    'garbage_collect',
60 <    'verify',
61 <    'sweep',
62 <    'enable_journal',
63 <    'disable_journal',
64 <    'dbkey_scope',
65 <    'number_of_users',
66 <    'trace',
67 <    'no_garbage_collect',
68 <    'damaged',
69 <    'license',
70 <    'sys_user_name',
71 <    'encrypt_key',
72 <    'activate_shadow',
73 <    'sweep_interval',
74 <    'delete_shadow',
75 <    'force_write',
76 <    'begin_log',
77 <    'quit_log',
78 <    'no_reserve',
79 <    'user_name',
80 <    'password',
81 <    'password_enc',
82 <    'sys_user_name_enc',
83 <    'interp',
84 <    'online_dump',
85 <    'old_file_size',
86 <    'old_num_files',
87 <    'old_file',
88 <    'old_start_page',
89 <    'old_start_seqno',
90 <    'old_start_file',
91 <    'drop_walfile',
92 <    'old_dump_id',
93 <    'wal_backup_dir',
94 <    'wal_chkptlen',
95 <    'wal_numbufs',
96 <    'wal_bufsize',
97 <    'wal_grp_cmt_wait',
98 <    'lc_messages',
99 <    'lc_ctype',
100 <    'cache_manager',
101 <    'shutdown',
102 <    'online',
103 <    'shutdown_delay',
104 <    'reserved',
105 <    'overwrite',
106 <    'sec_attach',
107 <    'disable_wal',
108 <    'connect_timeout',
109 <    'dummy_packet_interval',
110 <    'gbak_attach',
111 <    'sql_role_name',
112 <    'set_page_buffers',
113 <    'working_directory',
114 <    'sql_dialect',
115 <    'set_db_readonly',
116 <    'set_db_sql_dialect',
117 <    'gfix_attach',
118 <    'gstat_attach'
119 <  );
120 <
121 <  TPBPrefix = 'isc_tpb_';
122 <  TPBConstantNames: array[1..isc_tpb_last_tpb_constant] of string = (
123 <    'consistency',
124 <    'concurrency',
125 <    'shared',
126 <    'protected',
127 <    'exclusive',
128 <    'wait',
129 <    'nowait',
130 <    'read',
131 <    'write',
132 <    'lock_read',
133 <    'lock_write',
134 <    'verb_time',
135 <    'commit_time',
136 <    'ignore_limbo',
137 <    'read_committed',
138 <    'autocommit',
139 <    'rec_version',
140 <    'no_rec_version',
141 <    'restart_requests',
142 <    'no_auto_undo'
143 <  );
144 <
145 < type
146 <
147 <  TIBDatabase = class;
148 <  TIBTransaction = class;
149 <  TIBBase = class;
150 <
151 <  TIBDatabaseLoginEvent = procedure(Database: TIBDatabase;
152 <    LoginParams: TStrings) of object;
153 <
154 <  TIBFileName = type string;
155 <  { TIBDatabase }
156 <  TIBDataBase = class(TCustomConnection)
157 <  private
158 <    FAllowStreamedConnected: boolean;
159 <    FHiddenPassword: string;
160 <    FIBLoaded: Boolean;
161 <    FOnLogin: TIBDatabaseLoginEvent;
162 <    FSQLHourGlass: Boolean;
163 <    FTraceFlags: TTraceFlags;
164 <    FDBSQLDialect: Integer;
165 <    FSQLDialect: Integer;
166 <    FOnDialectDowngradeWarning: TNotifyEvent;
167 <    FCanTimeout: Boolean;
168 <    FSQLObjects: TList;
169 <    FTransactions: TList;
170 <    FDBName: TIBFileName;
171 <    FDBParams: TStrings;
172 <    FDBParamsChanged: Boolean;
173 <    FDPB: PChar;
174 <    FDPBLength: Short;
175 <    FHandle: TISC_DB_HANDLE;
176 <    FHandleIsShared: Boolean;
177 <    FOnIdleTimer: TNotifyEvent;
178 <    FDefaultTransaction: TIBTransaction;
179 <    FInternalTransaction: TIBTransaction;
180 <    FStreamedConnected: Boolean;
181 <    FTimer: TTimer;
182 <    FUserNames: TStringList;
183 <    FDataSets: TList;
184 <    FLoginCalled: boolean;
185 <    FCharSetSizes: array of integer;
186 <    procedure EnsureInactive;
187 <    function GetDBSQLDialect: Integer;
188 <    function GetSQLDialect: Integer;
189 <    procedure SetSQLDialect(const Value: Integer);
190 <    procedure ValidateClientSQLDialect;
191 <    procedure DBParamsChange(Sender: TObject);
192 <    procedure DBParamsChanging(Sender: TObject);
193 <    function GetSQLObject(Index: Integer): TIBBase;
194 <    function GetSQLObjectCount: Integer;
195 <    function GetDBParamByDPB(const Idx: Integer): String;
196 <    function GetIdleTimer: Integer;
197 <    function GetTransaction(Index: Integer): TIBTransaction;
198 <    function GetTransactionCount: Integer;
199 <    function Login: Boolean;
200 <    procedure LoadCharSetInfo;
201 <    procedure SetDatabaseName(const Value: TIBFileName);
202 <    procedure SetDBParamByDPB(const Idx: Integer; Value: String);
203 <    procedure SetDBParams(Value: TStrings);
204 <    procedure SetDefaultTransaction(Value: TIBTransaction);
205 <    procedure SetIdleTimer(Value: Integer);
206 <    procedure TimeoutConnection(Sender: TObject);
207 <    function GetIsReadOnly: Boolean;
208 <    function AddSQLObject(ds: TIBBase): Integer;
209 <    procedure RemoveSQLObject(Idx: Integer);
210 <    procedure RemoveSQLObjects;
211 <    procedure InternalClose(Force: Boolean);
212 <
213 <  protected
214 <    procedure DoConnect; override;
215 <    procedure DoDisconnect; override;
216 <    function GetConnected: Boolean; override;
217 <    procedure CheckStreamConnect;
218 <    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
219 <    function GetDataset(Index : longint) : TDataset; override;
220 <    function GetDataSetCount : Longint; override;
221 <    procedure ReadState(Reader: TReader); override;
222 <    procedure SetConnected (Value : boolean); override;
223 <  public
224 <    constructor Create(AOwner: TComponent); override;
225 <    destructor Destroy; override;
226 <    procedure ApplyUpdates(const DataSets: array of TDataSet);
227 <    procedure CloseDataSets;
228 <    procedure CheckActive;
229 <    procedure CheckInactive;
230 <    procedure CreateDatabase;
231 <    procedure DropDatabase;
232 <    procedure ForceClose;
233 <    procedure GetFieldNames(const TableName: string; List: TStrings);
234 <    procedure GetTableNames(List: TStrings; SystemTables: Boolean = False);
235 <    function IndexOfDBConst(st: String): Integer;
236 <    function TestConnected: Boolean;
237 <    procedure CheckDatabaseName;
238 <    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
239 <    function AddTransaction(TR: TIBTransaction): Integer;
240 <    function FindTransaction(TR: TIBTransaction): Integer;
241 <    function FindDefaultTransaction(): TIBTransaction;
242 <    procedure RemoveTransaction(Idx: Integer);
243 <    procedure RemoveTransactions;
244 <    procedure SetHandle(Value: TISC_DB_HANDLE);
245 <
246 <    property Handle: TISC_DB_HANDLE read FHandle;
247 <    property IsReadOnly: Boolean read GetIsReadOnly;
248 <    property DBParamByDPB[const Idx: Integer]: String read GetDBParamByDPB
249 <                                                      write SetDBParamByDPB;
250 <    property SQLObjectCount: Integer read GetSQLObjectCount;
251 <    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
252 <    property HandleIsShared: Boolean read FHandleIsShared;
253 <    property TransactionCount: Integer read GetTransactionCount;
254 <    property Transactions[Index: Integer]: TIBTransaction read GetTransaction;
255 <    property InternalTransaction: TIBTransaction read FInternalTransaction;
256 <
257 <  published
258 <    property Connected;
259 <    property AllowStreamedConnected: boolean read FAllowStreamedConnected
260 <             write FAllowStreamedConnected;
261 <    property DatabaseName: TIBFileName read FDBName write SetDatabaseName;
262 <    property Params: TStrings read FDBParams write SetDBParams;
263 <    property LoginPrompt default True;
264 <    property DefaultTransaction: TIBTransaction read FDefaultTransaction
265 <                                                 write SetDefaultTransaction;
266 <    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer;
267 <    property SQLDialect : Integer read GetSQLDialect write SetSQLDialect default 3;
268 <    property SQLHourGlass: Boolean read FSQLHourGlass write FSQLHourGlass default true;
269 <    property DBSQLDialect : Integer read FDBSQLDialect;
270 <    property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
271 <    property AfterConnect;
272 <    property AfterDisconnect;
273 <    property BeforeConnect;
274 <    property BeforeDisconnect;
275 <    property OnLogin: TIBDatabaseLoginEvent read FOnLogin write FOnLogin;
276 <    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
277 <    property OnDialectDowngradeWarning: TNotifyEvent read FOnDialectDowngradeWarning write FOnDialectDowngradeWarning;
278 <  end;
279 <
280 <  { TIBTransaction }
281 <
282 <  TTransactionAction         = (TARollback, TACommit, TARollbackRetaining, TACommitRetaining);
283 <
284 <  TIBTransaction = class(TComponent)
285 <  private
286 <    FAfterDelete: TNotifyEvent;
287 <    FAfterEdit: TNotifyEvent;
288 <    FAfterExecQuery: TNotifyEvent;
289 <    FAfterInsert: TNotifyEvent;
290 <    FAfterPost: TNotifyEvent;
291 <    FAfterTransactionEnd: TNotifyEvent;
292 <    FBeforeTransactionEnd: TNotifyEvent;
293 <    FIBLoaded: Boolean;
294 <    FCanTimeout         : Boolean;
295 <    FDatabases          : TList;
296 <    FOnStartTransaction: TNotifyEvent;
297 <    FSQLObjects         : TList;
298 <    FDefaultDatabase    : TIBDatabase;
299 <    FHandle             : TISC_TR_HANDLE;
300 <    FHandleIsShared     : Boolean;
301 <    FOnIdleTimer          : TNotifyEvent;
302 <    FStreamedActive     : Boolean;
303 <    FTPB                : PChar;
304 <    FTPBLength          : Short;
305 <    FTimer              : TTimer;
306 <    FDefaultAction      : TTransactionAction;
307 <    FTRParams           : TStrings;
308 <    FTRParamsChanged    : Boolean;
309 <    FInEndTransaction   : boolean;
310 <    FEndAction          : TTransactionAction;
311 <    procedure DoBeforeTransactionEnd;
312 <    procedure DoAfterTransactionEnd;
313 <    procedure DoOnStartTransaction;
314 <    procedure DoAfterExecQuery(Sender: TObject);
315 <    procedure DoAfterEdit(Sender: TObject);
316 <    procedure DoAfterDelete(Sender: TObject);
317 <    procedure DoAfterInsert(Sender: TObject);
318 <    procedure DoAfterPost(Sender: TObject);
319 <    procedure EnsureNotInTransaction;
320 <    procedure EndTransaction(Action: TTransactionAction; Force: Boolean);
321 <    function GetDatabase(Index: Integer): TIBDatabase;
322 <    function GetDatabaseCount: Integer;
323 <    function GetSQLObject(Index: Integer): TIBBase;
324 <    function GetSQLObjectCount: Integer;
325 <    function GetInTransaction: Boolean;
326 <    function GetIdleTimer: Integer;
327 <    procedure BeforeDatabaseDisconnect(DB: TIBDatabase);
328 <    procedure SetActive(Value: Boolean);
329 <    procedure SetDefaultAction(Value: TTransactionAction);
330 <    procedure SetDefaultDatabase(Value: TIBDatabase);
331 <    procedure SetIdleTimer(Value: Integer);
332 <    procedure SetTRParams(Value: TStrings);
333 <    procedure TimeoutTransaction(Sender: TObject);
334 <    procedure TRParamsChange(Sender: TObject);
335 <    procedure TRParamsChanging(Sender: TObject);
336 <    function AddSQLObject(ds: TIBBase): Integer;
337 <    procedure RemoveSQLObject(Idx: Integer);
338 <    procedure RemoveSQLObjects;
339 <
340 <  protected
341 <    procedure Loaded; override;
342 <    procedure SetHandle(Value: TISC_TR_HANDLE);
343 <    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
344 <
345 <  public
346 <    constructor Create(AOwner: TComponent); override;
347 <    destructor Destroy; override;
348 <    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
349 <    procedure Commit;
350 <    procedure CommitRetaining;
351 <    procedure Rollback;
352 <    procedure RollbackRetaining;
353 <    procedure StartTransaction;
354 <    procedure CheckInTransaction;
355 <    procedure CheckNotInTransaction;
356 <
357 <    function AddDatabase(db: TIBDatabase): Integer;
358 <    function FindDatabase(db: TIBDatabase): Integer;
359 <    function FindDefaultDatabase: TIBDatabase;
360 <    function GetEndAction: TTransactionAction;
361 <    procedure RemoveDatabase(Idx: Integer);
362 <    procedure RemoveDatabases;
363 <    procedure CheckDatabasesInList;
364 <
365 <    property DatabaseCount: Integer read GetDatabaseCount;
366 <    property Databases[Index: Integer]: TIBDatabase read GetDatabase;
367 <    property SQLObjectCount: Integer read GetSQLObjectCount;
368 <    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
369 <    property Handle: TISC_TR_HANDLE read FHandle;
370 <    property HandleIsShared: Boolean read FHandleIsShared;
371 <    property InTransaction: Boolean read GetInTransaction;
372 <    property TPB: PChar read FTPB;
373 <    property TPBLength: Short read FTPBLength;
374 <  published
375 <    property Active: Boolean read GetInTransaction write SetActive;
376 <    property DefaultDatabase: TIBDatabase read FDefaultDatabase
377 <                                           write SetDefaultDatabase;
378 <    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer default 0;
379 <    property DefaultAction: TTransactionAction read FDefaultAction write SetDefaultAction default taCommit;
380 <    property Params: TStrings read FTRParams write SetTRParams;
381 <    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
382 <    property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd
383 <                                             write FBeforeTransactionEnd;
384 <    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd
385 <                                            write FAfterTransactionEnd;
386 <    property OnStartTransaction: TNotifyEvent read FOnStartTransaction
387 <                                              write FOnStartTransaction;
388 <    property AfterExecQuery: TNotifyEvent read FAfterExecQuery
389 <                                              write FAfterExecQuery;
390 <    property AfterEdit: TNotifyEvent read FAfterEdit write FAfterEdit;
391 <    property AfterDelete: TNotifyEvent read FAfterDelete write FAfterDelete;
392 <    property AfterInsert: TNotifyEvent read FAfterInsert write FAfterInsert;
393 <    property AfterPost: TNotifyEvent read FAfterPost write FAfterPost;
394 <  end;
395 <
396 <  TTransactionEndEvent = procedure(Sender:TObject; Action: TTransactionAction) of object;
397 <  TBeforeDatabaseConnectEvent = procedure (Sender: TObject; DBParams: TStrings;
398 <                              var DBName: string) of object;
399 <
400 <  { TIBBase }
401 <
402 <  { Virtually all components in IB are "descendents" of TIBBase.
403 <    It is to more easily manage the database and transaction
404 <    connections. }
405 <  TIBBase = class(TObject)
406 <  protected
407 <    FBeforeDatabaseConnect: TBeforeDatabaseConnectEvent;
408 <    FDatabase: TIBDatabase;
409 <    FIndexInDatabase: Integer;
410 <    FTransaction: TIBTransaction;
411 <    FIndexInTransaction: Integer;
412 <    FOwner: TObject;
413 <    FBeforeDatabaseDisconnect: TNotifyEvent;
414 <    FAfterDatabaseDisconnect: TNotifyEvent;
415 <    FAfterDatabaseConnect: TNotifyEvent;
416 <    FOnDatabaseFree: TNotifyEvent;
417 <    FBeforeTransactionEnd: TTransactionEndEvent;
418 <    FAfterTransactionEnd: TNotifyEvent;
419 <    FOnTransactionFree: TNotifyEvent;
420 <
421 <    procedure DoBeforeDatabaseConnect(DBParams: TStrings;
422 <                              var DBName: string); virtual;
423 <    procedure DoAfterDatabaseConnect; virtual;
424 <    procedure DoBeforeDatabaseDisconnect; virtual;
425 <    procedure DoAfterDatabaseDisconnect; virtual;
426 <    procedure DoDatabaseFree; virtual;
427 <    procedure DoBeforeTransactionEnd(Action: TTransactionAction); virtual;
428 <    procedure DoAfterTransactionEnd; virtual;
429 <    procedure DoTransactionFree; virtual;
430 <    function GetDBHandle: PISC_DB_HANDLE; virtual;
431 <    function GetTRHandle: PISC_TR_HANDLE; virtual;
432 <    procedure SetDatabase(Value: TIBDatabase); virtual;
433 <    procedure SetTransaction(Value: TIBTransaction); virtual;
434 <  public
435 <    constructor Create(AOwner: TObject);
436 <    destructor Destroy; override;
437 <    procedure CheckDatabase; virtual;
438 <    procedure CheckTransaction; virtual;
439 <    procedure DoAfterExecQuery(Sender: TObject); virtual;
440 <    procedure DoAfterEdit(Sender: TObject); virtual;
441 <    procedure DoAfterDelete(Sender: TObject); virtual;
442 <    procedure DoAfterInsert(Sender: TObject); virtual;
443 <    procedure DoAfterPost(Sender: TObject); virtual;
444 <    function GetCharSetSize(CharSetID: integer): integer;
445 <  public
446 <    property BeforeDatabaseConnect: TBeforeDatabaseConnectEvent read FBeforeDatabaseConnect
447 <                                                 write FBeforeDatabaseConnect;
448 <    property AfterDatabaseConnect: TNotifyEvent read FAfterDatabaseConnect
449 <                                                write FAfterDatabaseConnect;
450 <    property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect
451 <                                                   write FBeforeDatabaseDisconnect;
452 <    property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect
453 <                                                  write FAfterDatabaseDisconnect;
454 <    property OnDatabaseFree: TNotifyEvent read FOnDatabaseFree write FOnDatabaseFree;
455 <    property BeforeTransactionEnd: TTransactionEndEvent read FBeforeTransactionEnd write FBeforeTransactionEnd;
456 <    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd write FAfterTransactionEnd;
457 <    property OnTransactionFree: TNotifyEvent read FOnTransactionFree write FOnTransactionFree;
458 <    property Database: TIBDatabase read FDatabase
459 <                                    write SetDatabase;
460 <    property DBHandle: PISC_DB_HANDLE read GetDBHandle;
461 <    property Owner: TObject read FOwner;
462 <    property TRHandle: PISC_TR_HANDLE read GetTRHandle;
463 <    property Transaction: TIBTransaction read FTransaction
464 <                                          write SetTransaction;
465 <  end;
466 <
467 < procedure GenerateDPB(sl: TStrings; var DPB: string; var DPBLength: Short);
468 < procedure GenerateTPB(sl: TStrings; var TPB: string; var TPBLength: Short);
469 <
470 <
471 < implementation
472 <
473 < uses IBIntf, IBSQLMonitor, IBCustomDataSet, IBDatabaseInfo, IBSQL, IBUtils,
474 <     typInfo;
475 <
476 < { TIBDatabase }
477 <
478 < constructor TIBDataBase.Create(AOwner: TComponent);
479 < {$ifdef WINDOWS}
480 < var acp: uint;
481 < {$endif}
482 < begin
483 <  inherited Create(AOwner);
484 <  FIBLoaded := False;
485 <  CheckIBLoaded;
486 <  FIBLoaded := True;
487 <  LoginPrompt := True;
488 <  FSQLObjects := TList.Create;
489 <  FTransactions := TList.Create;
490 <  FDBName := '';
491 <  FDBParams := TStringList.Create;
492 <  FSQLHourGlass := true;
493 <  {$ifdef UNIX}
494 <  if csDesigning in ComponentState then
495 <    FDBParams.Add('lc_ctype=UTF-8');
496 <  {$else}
497 <  {$ifdef WINDOWS}
498 <  if csDesigning in ComponentState then
499 <  begin
500 <    acp := GetACP;
501 <    if (acp >= 1250) and (acp <= 1254) then
502 <      FDBParams.Values['lc_ctype'] := Format('WIN%d',[acp]);
503 <  end;
504 <  {$endif}
505 <  {$endif}
506 <  FDBParamsChanged := True;
507 <  TStringList(FDBParams).OnChange := DBParamsChange;
508 <  TStringList(FDBParams).OnChanging := DBParamsChanging;
509 <  FDPB := nil;
510 <  FHandle := nil;
511 <  FUserNames := nil;
512 <  FInternalTransaction := TIBTransaction.Create(self);
513 <  FInternalTransaction.DefaultDatabase := Self;
514 <  FTimer := TTimer.Create(Self);
515 <  FTimer.Enabled := False;
516 <  FTimer.Interval := 0;
517 <  FTimer.OnTimer := TimeoutConnection;
518 <  FDBSQLDialect := 1;
519 <  FSQLDialect := 3;
520 <  FTraceFlags := [];
521 <  FDataSets := TList.Create;
522 <  CheckStreamConnect;
523 < end;
524 <
525 < destructor TIBDataBase.Destroy;
526 < var
527 <  i: Integer;
528 < begin
529 <  if FIBLoaded then
530 <  begin
531 <    IdleTimer := 0;
532 <    if FHandle <> nil then
533 <      ForceClose;
534 <    for i := 0 to FSQLObjects.Count - 1 do
535 <      if FSQLObjects[i] <> nil then
536 <        SQLObjects[i].DoDatabaseFree;
537 <    RemoveSQLObjects;
538 <    RemoveTransactions;
539 <    FInternalTransaction.Free;
540 <    FreeMem(FDPB);
541 <    FDPB := nil;
542 <    FDBParams.Free;
543 <    FSQLObjects.Free;
544 <    FUserNames.Free;
545 <    FTransactions.Free;
546 <  end;
547 <  FDataSets.Free;
548 <  inherited Destroy;
549 < end;
550 <
551 < function TIBDataBase.Call(ErrCode: ISC_STATUS; RaiseError: Boolean
552 <   ): ISC_STATUS;
553 < begin
554 <  result := ErrCode;
555 <  FCanTimeout := False;
556 <  if RaiseError and (ErrCode > 0) then
557 <    IBDataBaseError;
558 < end;
559 <
560 < procedure TIBDataBase.CheckActive;
561 < begin
562 <  if StreamedConnected and (not Connected) then
563 <    Loaded;
564 <  if FHandle = nil then
565 <    IBError(ibxeDatabaseClosed, [nil]);
566 < end;
567 <
568 < procedure TIBDataBase.EnsureInactive;
569 < begin
570 <  if csDesigning in ComponentState then
571 <  begin
572 <    if FHandle <> nil then
573 <      Close;
574 <  end
575 < end;
576 <
577 < procedure TIBDataBase.CheckInactive;
578 < begin
579 <  if FHandle <> nil then
580 <    IBError(ibxeDatabaseOpen, [nil]);
581 < end;
582 <
583 < procedure TIBDataBase.CheckDatabaseName;
584 < begin
585 <  if (FDBName = '') then
586 <    IBError(ibxeDatabaseNameMissing, [nil]);
587 < end;
588 <
589 < function TIBDataBase.AddSQLObject(ds: TIBBase): Integer;
590 < begin
591 <  result := 0;
592 <  if (ds.Owner is TIBCustomDataSet) then
593 <    FDataSets.Add(ds.Owner);
594 <  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
595 <    Inc(result);
596 <  if (result = FSQLObjects.Count) then
597 <    FSQLObjects.Add(ds)
598 <  else
599 <    FSQLObjects[result] := ds;
600 < end;
601 <
602 < function TIBDataBase.AddTransaction(TR: TIBTransaction): Integer;
603 < begin
604 <  result := FindTransaction(TR);
605 <  if result <> -1 then
606 <  begin
607 <    result := -1;
608 <    exit;
609 <  end;
610 <  result := 0;
611 <  while (result < FTransactions.Count) and (FTransactions[result] <> nil) do
612 <    Inc(result);
613 <  if (result = FTransactions.Count) then
614 <    FTransactions.Add(TR)
615 <  else
616 <    FTransactions[result] := TR;
617 < end;
618 <
619 < procedure TIBDataBase.DoDisconnect;
620 < begin
621 <  if Connected then
622 <    InternalClose(False);
623 <  FDBSQLDialect := 1;
624 <  SetLength(FCharSetSizes,0);
625 < end;
626 <
627 < procedure TIBDataBase.CreateDatabase;
628 < var
629 <  tr_handle: TISC_TR_HANDLE;
630 < begin
631 <  CheckInactive;
632 <  tr_handle := nil;
633 <  Call(
634 <    isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0,
635 <                               PChar('CREATE DATABASE ''' + FDBName + ''' ' + {do not localize}
636 <                               Params.Text), SQLDialect, nil),
637 <    True);
638 < end;
639 <
640 < procedure TIBDataBase.DropDatabase;
641 < begin
642 <  CheckActive;
643 <  Call(isc_drop_database(StatusVector, @FHandle), True);
644 < end;
645 <
646 < procedure TIBDataBase.DBParamsChange(Sender: TObject);
647 < begin
648 <  FDBParamsChanged := True;
649 < end;
650 <
651 < procedure TIBDataBase.DBParamsChanging(Sender: TObject);
652 < begin
653 <  EnsureInactive;
654 <  CheckInactive;
655 < end;
656 <
657 < function TIBDataBase.FindTransaction(TR: TIBTransaction): Integer;
658 < var
659 <  i: Integer;
660 < begin
661 <  result := -1;
662 <  for i := 0 to FTransactions.Count - 1 do
663 <    if TR = Transactions[i] then
664 <    begin
665 <      result := i;
666 <      break;
667 <    end;
668 < end;
669 <
670 < function TIBDataBase.FindDefaultTransaction: TIBTransaction;
671 < var
672 <  i: Integer;
673 < begin
674 <  result := FDefaultTransaction;
675 <  if result = nil then
676 <  begin
677 <    for i := 0 to FTransactions.Count - 1 do
678 <      if (Transactions[i] <> nil) and
679 <        (TIBTransaction(Transactions[i]).DefaultDatabase = self) and
680 <        (TIBTransaction(Transactions[i]) <> FInternalTransaction) then
681 <       begin
682 <         result := TIBTransaction(Transactions[i]);
683 <         break;
684 <       end;
685 <  end;
686 < end;
687 <
688 < procedure TIBDataBase.ForceClose;
689 < begin
690 <  if Connected then
691 <    InternalClose(True);
692 < end;
693 <
694 < function TIBDataBase.GetConnected: Boolean;
695 < begin
696 <  result := FHandle <> nil;
697 < end;
698 <
699 < function TIBDataBase.GetSQLObject(Index: Integer): TIBBase;
700 < begin
701 <  result := FSQLObjects[Index];
702 < end;
703 <
704 < function TIBDataBase.GetSQLObjectCount: Integer;
705 < var
706 <  i: Integer;
707 < begin
708 <  result := 0;
709 <  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
710 <    Inc(result);
711 < end;
712 <
713 < function TIBDataBase.GetDBParamByDPB( const Idx: Integer): String;
714 < var
715 <  ConstIdx, EqualsIdx: Integer;
716 < begin
717 <  if (Idx > 0) and (Idx <= isc_dpb_last_dpb_constant) then
718 <  begin
719 <    ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
720 <    if ConstIdx = -1 then
721 <      result := ''
722 <    else
723 <    begin
724 <      result := Params[ConstIdx];
725 <      EqualsIdx := Pos('=', result); {mbcs ok}
726 <      if EqualsIdx = 0 then
727 <        result := ''
728 <      else
729 <        result := Copy(result, EqualsIdx + 1, Length(result));
730 <    end;
731 <  end
732 <  else
733 <    result := '';
734 < end;
735 <
736 < function TIBDataBase.GetIdleTimer: Integer;
737 < begin
738 <  result := FTimer.Interval;
739 < end;
740 <
741 < function TIBDataBase.GetTransaction(Index: Integer): TIBTransaction;
742 < begin
743 <  result := FTransactions[Index];
744 < end;
745 <
746 < function TIBDataBase.GetTransactionCount: Integer;
747 < var
748 <  i: Integer;
749 < begin
750 <  result := 0;
751 <  for i := 0 to FTransactions.Count - 1 do
752 <    if FTransactions[i] <> nil then
753 <      Inc(result);
754 < end;
755 <
756 < function TIBDataBase.IndexOfDBConst(st: String): Integer;
757 < var
758 <  i, pos_of_str: Integer;
759 < begin
760 <  result := -1;
761 <  for i := 0 to Params.Count - 1 do
762 <  begin
763 <    pos_of_str := Pos(st, AnsiLowerCase(Params[i])); {mbcs ok}
764 <    if (pos_of_str = 1) or (pos_of_str = Length(DPBPrefix) + 1) then
765 <    begin
766 <      result := i;
767 <      break;
768 <    end;
769 <  end;
770 < end;
771 <
772 < procedure TIBDataBase.InternalClose(Force: Boolean);
773 < var
774 <  i: Integer;
775 < begin
776 <  CheckActive;
777 <  { Tell all connected transactions that we're disconnecting.
778 <    This is so transactions can commit/rollback, accordingly
779 <  }
780 <  for i := 0 to FTransactions.Count - 1 do
781 <  begin
782 <    try
783 <      if FTransactions[i] <> nil then
784 <        Transactions[i].BeforeDatabaseDisconnect(Self);
785 <    except
786 <      if not Force then
787 <        raise;
788 <    end;
789 <  end;
790 <  for i := 0 to FSQLObjects.Count - 1 do
791 <  begin
792 <    try
793 <      if FSQLObjects[i] <> nil then
794 <        SQLObjects[i].DoBeforeDatabaseDisconnect;
795 <    except
796 <      if not Force then
797 <        raise;
798 <    end;
799 <  end;
800 <
801 <  if (not HandleIsShared) and
802 <     (Call(isc_detach_database(StatusVector, @FHandle), False) > 0) and
803 <     (not Force) then
804 <    IBDataBaseError
805 <  else
806 <  begin
807 <    FHandle := nil;
808 <    FHandleIsShared := False;
809 <  end;
810 <
811 <  if not (csDesigning in ComponentState) then
812 <    MonitorHook.DBDisconnect(Self);
813 <
814 <  for i := 0 to FSQLObjects.Count - 1 do
815 <    if FSQLObjects[i] <> nil then
816 <      SQLObjects[i].DoAfterDatabaseDisconnect;
817 < end;
818 <
819 < procedure TIBDataBase.LoadCharSetInfo;
820 < var Query: TIBSQL;
821 <    i: integer;
822 < begin
823 <  if not FInternalTransaction.Active then
824 <    FInternalTransaction.StartTransaction;
825 <  Query := TIBSQL.Create(self);
826 <  try
827 <    Query.Database := Self;
828 <    Query.Transaction := FInternalTransaction;
829 <    Query.SQL.Text := 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER ' +
830 <                      'From RDB$CHARACTER_SETS Order by 1 DESC'; {do not localize}
831 <    Query.Prepare;
832 <    Query.ExecQuery;
833 <    if not Query.EOF then
834 <    begin
835 <      SetLength(FCharSetSizes,Query.FieldByName('RDB$CHARACTER_SET_ID').AsInteger + 1);
836 <      for i := 0 to Length(FCharSetSizes) - 1 do FCharSetSizes[i] := 1;
837 <      repeat
838 <        FCharSetSizes[Query.FieldByName('RDB$CHARACTER_SET_ID').AsInteger] :=
839 <                 Query.FieldByName('RDB$BYTES_PER_CHARACTER').AsInteger;
840 <        Query.Next;
841 <      until Query.EOF;
842 <    end;
843 <  finally
844 <    Query.free;
845 <    FInternalTransaction.Commit;
846 <  end;
847 < end;
848 <
849 < procedure TIBDataBase.CheckStreamConnect;
850 < var
851 <  i: integer;
852 < begin
853 <  try
854 <    if not (csDesigning in ComponentState) and StreamedConnected and (not Connected) then
855 <    begin
856 <      for i := 0 to FTransactions.Count - 1 do
857 <        if  FTransactions[i] <> nil then
858 <        begin
859 <          with TIBTransaction(FTransactions[i]) do
860 <            if not Active then
861 <              if FStreamedActive and not InTransaction then
862 <              begin
863 <                StartTransaction;
864 <                FStreamedActive := False;
865 <              end;
866 <        end;
867 <      if (FDefaultTransaction <> nil) and
868 <         (FDefaultTransaction.FStreamedActive) and
869 <         (not FDefaultTransaction.InTransaction) then
870 <        FDefaultTransaction.StartTransaction;
871 <      FStreamedConnected := False;
872 <    end;
873 <  except
874 <    if csDesigning in ComponentState then
875 <      Application.HandleException(Self)
876 <    else
877 <      raise;
878 <  end;
879 < end;
880 <
881 < procedure TIBDataBase.Notification(AComponent: TComponent;
882 <   Operation: TOperation);
883 < var
884 <  i: Integer;
885 < begin
886 <  inherited Notification( AComponent, Operation);
887 <  if (Operation = opRemove) and (AComponent = FDefaultTransaction) then
888 <  begin
889 <    i := FindTransaction(FDefaultTransaction);
890 <    if (i <> -1) then
891 <      RemoveTransaction(i);
892 <    FDefaultTransaction := nil;
893 <  end;
894 < end;
895 <
896 < function TIBDataBase.Login: Boolean;
897 < var
898 <  IndexOfUser, IndexOfPassword: Integer;
899 <  Username, Password, OldPassword: String;
900 <  LoginParams: TStrings;
901 <
902 <  procedure HidePassword;
903 <  var
904 <    I: Integer;
905 <    IndexAt: Integer;
906 <  begin
907 <    IndexAt := 0;
908 <    for I := 0 to Params.Count -1 do
909 <      if Pos('password', LowerCase(Trim(Params.Names[i]))) = 1 then {mbcs ok}
910 <      begin
911 <        FHiddenPassword := Params.Values[Params.Names[i]];
912 <        IndexAt := I;
913 <        break;
914 <      end;
915 <    if IndexAt <> 0 then
916 <      Params.Delete(IndexAt);
917 <  end;
918 <
919 < begin
920 <  Result := false;
921 <  if FLoginCalled then Exit;
922 <  FLoginCalled := true;
923 <  try
924 <  if Assigned(FOnLogin) and not (csDesigning in ComponentState) then
925 <  begin
926 <    result := True;
927 <    LoginParams := TStringList.Create;
928 <    try
929 <      LoginParams.Assign(Params);
930 <      FOnLogin(Self, LoginParams);
931 <      Params.Assign (LoginParams);
932 <      HidePassword;
933 <    finally
934 <      LoginParams.Free;
935 <    end;
936 <  end
937 <  else
938 <  begin
939 <    IndexOfUser := IndexOfDBConst(DPBConstantNames[isc_dpb_user_name]);
940 <    if IndexOfUser <> -1 then
941 <      Username := Copy(Params[IndexOfUser],
942 <                                         Pos('=', Params[IndexOfUser]) + 1, {mbcs ok}
943 <                                         Length(Params[IndexOfUser]));
944 <    IndexOfPassword := IndexOfDBConst(DPBConstantNames[isc_dpb_password]);
945 <    if IndexOfPassword <> -1 then
946 <    begin
947 <      Password := Copy(Params[IndexOfPassword],
948 <                                         Pos('=', Params[IndexOfPassword]) + 1, {mbcs ok}
949 <                                         Length(Params[IndexOfPassword]));
950 <      OldPassword := password;
951 <    end;
952 <    result := LoginDialogEx(DatabaseName, Username, Password, False);
953 <    if result then
954 <    begin
955 <      if IndexOfUser = -1 then
956 <        Params.Add(DPBConstantNames[isc_dpb_user_name] + '=' + Username)
957 <      else
958 <        Params[IndexOfUser] := DPBConstantNames[isc_dpb_user_name] +
959 <                                 '=' + Username;
960 <      if (Password = OldPassword) then
961 <        FHiddenPassword := ''
962 <      else
963 <      begin
964 <        FHiddenPassword := Password;
965 <        if OldPassword <> '' then
966 <          HidePassword;
967 <      end;
968 <    end;
969 <  end;
970 <  finally
971 <    FLoginCalled := false
972 <  end;
973 < end;
974 <
975 < procedure TIBDataBase.DoConnect;
976 < var
977 <  DPB: String;
978 <  TempDBParams: TStrings;
979 <  I: integer;
980 <  aDBName: string;
981 < begin
982 <  CheckInactive;
983 <  CheckDatabaseName;
984 <  if (not LoginPrompt) and (FHiddenPassword <> '') then
985 <  begin
986 <    FHiddenPassword := '';
987 <    FDBParamsChanged := True;
988 <  end;
989 <  { Use builtin login prompt if requested }
990 <  if (LoginPrompt or (csDesigning in ComponentState)) and not Login then
991 <    IBError(ibxeOperationCancelled, [nil]);
992 <
993 <  TempDBParams := TStringList.Create;
994 <  try
995 <   TempDBParams.Assign(FDBParams);
996 <   aDBName := FDBName;
997 <   {Opportuning to override defaults}
998 <   for i := 0 to FSQLObjects.Count - 1 do
999 <   begin
1000 <       if FSQLObjects[i] <> nil then
1001 <         SQLObjects[i].DoBeforeDatabaseConnect(TempDBParams,aDBName);
1002 <   end;
1003 <
1004 <   { Generate a new DPB if necessary }
1005 <   if (FDBParamsChanged or (TempDBParams.Text <> FDBParams.Text)) then
1006 <   begin
1007 <     FDBParamsChanged := False;
1008 <     if (not LoginPrompt and not (csDesigning in ComponentState)) or (FHiddenPassword = '') then
1009 <       GenerateDPB(TempDBParams, DPB, FDPBLength)
1010 <     else
1011 <     begin
1012 <        TempDBParams.Add('password=' + FHiddenPassword);
1013 <        GenerateDPB(TempDBParams, DPB, FDPBLength);
1014 <     end;
1015 <     IBAlloc(FDPB, 0, FDPBLength);
1016 <     Move(DPB[1], FDPB[0], FDPBLength);
1017 <   end;
1018 <  finally
1019 <   TempDBParams.Free;
1020 <  end;
1021 <  if Call(isc_attach_database(StatusVector, Length(aDBName),
1022 <                         PChar(aDBName), @FHandle,
1023 <                         FDPBLength, FDPB), False) > 0 then
1024 <  begin
1025 <    FHandle := nil;
1026 <    IBDataBaseError;
1027 <  end;
1028 <  if not (csDesigning in ComponentState) then
1029 <    FDBName := aDBName; {Synchronise at run time}
1030 <  FDBSQLDialect := GetDBSQLDialect;
1031 <  ValidateClientSQLDialect;
1032 <  for i := 0 to FSQLObjects.Count - 1 do
1033 <  begin
1034 <      if FSQLObjects[i] <> nil then
1035 <        SQLObjects[i].DoAfterDatabaseConnect;
1036 <  end;
1037 <  if not (csDesigning in ComponentState) then
1038 <    MonitorHook.DBConnect(Self);
1039 <  LoadCharSetInfo;
1040 < end;
1041 <
1042 < procedure TIBDataBase.RemoveSQLObject(Idx: Integer);
1043 < var
1044 <  ds: TIBBase;
1045 < begin
1046 <  if (Idx >= 0) and (FSQLObjects[Idx] <> nil) then
1047 <  begin
1048 <    ds := SQLObjects[Idx];
1049 <    FSQLObjects[Idx] := nil;
1050 <    ds.Database := nil;
1051 <    if (ds.owner is TDataSet) then
1052 <      FDataSets.Remove(TDataSet(ds.Owner));
1053 <  end;
1054 < end;
1055 <
1056 < procedure TIBDataBase.RemoveSQLObjects;
1057 < var
1058 <  i: Integer;
1059 < begin
1060 <  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1061 <  begin
1062 <    RemoveSQLObject(i);
1063 <    if (TIBBase(FSQLObjects[i]).owner is TDataSet) then
1064 <      FDataSets.Remove(TDataSet(TIBBase(FSQLObjects[i]).owner));
1065 <  end;
1066 < end;
1067 <
1068 < procedure TIBDataBase.RemoveTransaction(Idx: Integer);
1069 < var
1070 <  TR: TIBTransaction;
1071 < begin
1072 <  if ((Idx >= 0) and (FTransactions[Idx] <> nil)) then
1073 <  begin
1074 <    TR := Transactions[Idx];
1075 <    FTransactions[Idx] := nil;
1076 <    TR.RemoveDatabase(TR.FindDatabase(Self));
1077 <    if TR = FDefaultTransaction then
1078 <      FDefaultTransaction := nil;
1079 <  end;
1080 < end;
1081 <
1082 < procedure TIBDataBase.RemoveTransactions;
1083 < var
1084 <  i: Integer;
1085 < begin
1086 <  for i := 0 to FTransactions.Count - 1 do if FTransactions[i] <> nil then
1087 <    RemoveTransaction(i);
1088 < end;
1089 <
1090 < procedure TIBDataBase.SetDatabaseName( const Value: TIBFileName);
1091 < begin
1092 <  if FDBName <> Value then
1093 <  begin
1094 <    EnsureInactive;
1095 <    CheckInactive;
1096 <    FDBName := Value;
1097 <  end;
1098 < end;
1099 <
1100 < procedure TIBDataBase.SetDBParamByDPB( const Idx: Integer; Value: String);
1101 < var
1102 <  ConstIdx: Integer;
1103 < begin
1104 <  ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
1105 <  if (Value = '') then
1106 <  begin
1107 <    if ConstIdx <> -1 then
1108 <      Params.Delete(ConstIdx);
1109 <  end
1110 <  else
1111 <  begin
1112 <    if (ConstIdx = -1) then
1113 <      Params.Add(DPBConstantNames[Idx] + '=' + Value)
1114 <    else
1115 <      Params[ConstIdx] := DPBConstantNames[Idx] + '=' + Value;
1116 <  end;
1117 < end;
1118 <
1119 < procedure TIBDataBase.SetDBParams(Value: TStrings);
1120 < begin
1121 <  FDBParams.Assign(Value);
1122 < end;
1123 <
1124 < procedure TIBDataBase.SetDefaultTransaction(Value: TIBTransaction);
1125 < var
1126 <  i: Integer;
1127 < begin
1128 <  if (FDefaultTransaction <> nil) and (FDefaultTransaction <> Value) then
1129 <  begin
1130 <    i := FindTransaction(FDefaultTransaction);
1131 <    if (i <> -1) and (FDefaultTransaction.DefaultDatabase <> self) then
1132 <      RemoveTransaction(i);
1133 <  end;
1134 <  if (Value <> nil) and (FDefaultTransaction <> Value) then
1135 <  begin
1136 <    Value.AddDatabase(Self);
1137 <    AddTransaction(Value);
1138 <  end;
1139 <  FDefaultTransaction := Value;
1140 < end;
1141 <
1142 < procedure TIBDataBase.SetHandle(Value: TISC_DB_HANDLE);
1143 < begin
1144 <  if HandleIsShared then
1145 <    Close
1146 <  else
1147 <    CheckInactive;
1148 <  FHandle := Value;
1149 <  FHandleIsShared := (Value <> nil);
1150 < end;
1151 <
1152 < procedure TIBDataBase.SetIdleTimer(Value: Integer);
1153 < begin
1154 <  if Value < 0 then
1155 <    IBError(ibxeTimeoutNegative, [nil])
1156 <  else
1157 <    if (Value = 0) then
1158 <    begin
1159 <      FTimer.Enabled := False;
1160 <      FTimer.Interval := 0;
1161 <    end
1162 <    else
1163 <      if (Value > 0) then
1164 <      begin
1165 <        FTimer.Interval := Value;
1166 <        if not (csDesigning in ComponentState) then
1167 <          FTimer.Enabled := True;
1168 <      end;
1169 < end;
1170 <
1171 < function TIBDataBase.TestConnected: Boolean;
1172 < var
1173 <  DatabaseInfo: TIBDatabaseInfo;
1174 < begin
1175 <  result := Connected;
1176 <  if result then
1177 <  begin
1178 <    DatabaseInfo := TIBDatabaseInfo.Create(self);
1179 <    try
1180 <      DatabaseInfo.Database := self;
1181 <      { poke the server to see if connected }
1182 <      if DatabaseInfo.BaseLevel = 0 then ;
1183 <      DatabaseInfo.Free;
1184 <    except
1185 <      ForceClose;
1186 <      result := False;
1187 <      DatabaseInfo.Free;
1188 <    end;
1189 <  end;
1190 < end;
1191 <
1192 < procedure TIBDataBase.TimeoutConnection(Sender: TObject);
1193 < begin
1194 <  if Connected then
1195 <  begin
1196 <    if FCanTimeout then
1197 <    begin
1198 <      ForceClose;
1199 <      if Assigned(FOnIdleTimer) then
1200 <        FOnIdleTimer(Self);
1201 <    end
1202 <    else
1203 <      FCanTimeout := True;
1204 <  end;
1205 < end;
1206 <
1207 < function TIBDataBase.GetIsReadOnly: Boolean;
1208 < var
1209 <  DatabaseInfo: TIBDatabaseInfo;
1210 < begin
1211 <  DatabaseInfo := TIBDatabaseInfo.Create(self);
1212 <  DatabaseInfo.Database := self;
1213 <  if (DatabaseInfo.ODSMajorVersion < 10) then
1214 <    result := false
1215 <  else
1216 <  begin
1217 <    if (DatabaseInfo.ReadOnly = 0) then
1218 <      result := false
1219 <    else
1220 <      result := true;
1221 <  end;
1222 <  DatabaseInfo.Free;
1223 < end;
1224 <
1225 < function TIBDataBase.GetSQLDialect: Integer;
1226 < begin
1227 <  Result := FSQLDialect;
1228 < end;
1229 <
1230 <
1231 < procedure TIBDataBase.SetSQLDialect( const Value: Integer);
1232 < begin
1233 <  if (Value < 1) then IBError(ibxeSQLDialectInvalid, [nil]);
1234 <  if ((FHandle = nil) or (Value <= FDBSQLDialect))  then
1235 <    FSQLDialect := Value
1236 <  else
1237 <    IBError(ibxeSQLDialectInvalid, [nil]);
1238 < end;
1239 <
1240 < function TIBDataBase.GetDBSQLDialect: Integer;
1241 < var
1242 <  DatabaseInfo: TIBDatabaseInfo;
1243 < begin
1244 <  DatabaseInfo := TIBDatabaseInfo.Create(self);
1245 <  DatabaseInfo.Database := self;
1246 <  result := DatabaseInfo.DBSQLDialect;
1247 <  DatabaseInfo.Free;
1248 < end;
1249 <
1250 < procedure TIBDataBase.ValidateClientSQLDialect;
1251 < begin
1252 <  if (FDBSQLDialect < FSQLDialect) then
1253 <  begin
1254 <    FSQLDialect := FDBSQLDialect;
1255 <    if Assigned (FOnDialectDowngradeWarning) then
1256 <      FOnDialectDowngradeWarning(self);
1257 <  end;
1258 < end;
1259 <
1260 < procedure TIBDataBase.ApplyUpdates( const DataSets: array of TDataSet);
1261 < var
1262 <  I: Integer;
1263 <  DS: TIBCustomDataSet;
1264 <  TR: TIBTransaction;
1265 < begin
1266 <  TR := nil;
1267 <  for I := 0 to High(DataSets) do
1268 <  begin
1269 <    DS := TIBCustomDataSet(DataSets[I]);
1270 <    if DS.Database <> Self then
1271 <      IBError(ibxeUpdateWrongDB, [nil]);
1272 <    if TR = nil then
1273 <      TR := DS.Transaction;
1274 <    if (DS.Transaction <> TR) or (TR = nil) then
1275 <      IBError(ibxeUpdateWrongTR, [nil]);
1276 <  end;
1277 <  TR.CheckInTransaction;
1278 <  for I := 0 to High(DataSets) do
1279 <  begin
1280 <    DS := TIBCustomDataSet(DataSets[I]);
1281 <    DS.ApplyUpdates;
1282 <  end;
1283 <  TR.CommitRetaining;
1284 < end;
1285 <
1286 < procedure TIBDataBase.CloseDataSets;
1287 < var
1288 <  i: Integer;
1289 < begin
1290 <  for i := 0 to DataSetCount - 1 do
1291 <    if (DataSets[i] <> nil) then
1292 <      DataSets[i].close;
1293 < end;
1294 <
1295 < function TIBDataBase.GetDataset(Index: longint): TDataset;
1296 < begin
1297 <  if (Index >= 0) and (Index < FDataSets.Count) then
1298 <    Result := TDataSet(FDataSets[Index])
1299 <  else
1300 <    raise Exception.Create('Invalid Index to DataSets');
1301 < end;
1302 <
1303 < function TIBDataBase.GetDataSetCount: Longint;
1304 < begin
1305 <  Result := FDataSets.Count;
1306 < end;
1307 <
1308 < procedure TIBDataBase.ReadState(Reader: TReader);
1309 < begin
1310 <  FDBParams.Clear;
1311 <  inherited ReadState(Reader);
1312 < end;
1313 <
1314 < procedure TIBDataBase.SetConnected(Value: boolean);
1315 < begin
1316 <  if StreamedConnected and not AllowStreamedConnected then
1317 <  begin
1318 <    StreamedConnected := false;
1319 <    Value := false
1320 <  end;
1321 <  inherited SetConnected(Value);
1322 < end;
1323 <
1324 < procedure TIBDataBase.GetFieldNames( const TableName: string; List: TStrings);
1325 < var
1326 <  Query: TIBSQL;
1327 < begin
1328 <  if TableName = '' then
1329 <    IBError(ibxeNoTableName, [nil]);
1330 <  if not Connected then
1331 <    Open;
1332 <  if not FInternalTransaction.Active then
1333 <    FInternalTransaction.StartTransaction;
1334 <  Query := TIBSQL.Create(self);
1335 <  try
1336 <    Query.GoToFirstRecordOnExecute := False;
1337 <    Query.Database := Self;
1338 <    Query.Transaction := FInternalTransaction;
1339 <    Query.SQL.Text := 'Select R.RDB$FIELD_NAME ' + {do not localize}
1340 <      'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
1341 <      'where R.RDB$RELATION_NAME = ' + {do not localize}
1342 <      '''' +
1343 <      FormatIdentifierValue(SQLDialect, TableName) +
1344 <      ''' ' +
1345 <      'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '; {do not localize}
1346 <    Query.Prepare;
1347 <    Query.ExecQuery;
1348 <    with List do
1349 <    begin
1350 <      BeginUpdate;
1351 <      try
1352 <        Clear;
1353 <        while (not Query.EOF) and (Query.Next <> nil) do
1354 <          List.Add(TrimRight(Query.Current.ByName('RDB$FIELD_NAME').AsString)); {do not localize}
1355 <      finally
1356 <        EndUpdate;
1357 <      end;
1358 <    end;
1359 <  finally
1360 <    Query.free;
1361 <    FInternalTransaction.Commit;
1362 <  end;
1363 < end;
1364 <
1365 < procedure TIBDataBase.GetTableNames(List: TStrings; SystemTables: Boolean);
1366 < var
1367 <  Query : TIBSQL;
1368 < begin
1369 <  if not (csReading in ComponentState) then
1370 <  begin
1371 <    if not Connected then
1372 <      Open;
1373 <    if not FInternalTransaction.Active then
1374 <      FInternalTransaction.StartTransaction;
1375 <    Query := TIBSQL.Create(self);
1376 <    try
1377 <      Query.GoToFirstRecordOnExecute := False;
1378 <      Query.Database := Self;
1379 <      Query.Transaction := FInternalTransaction;
1380 <      if SystemTables then
1381 <        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1382 <                          ' where RDB$VIEW_BLR is NULL' {do not localize}
1383 <      else
1384 <        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1385 <                          ' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
1386 <      Query.Prepare;
1387 <      Query.ExecQuery;
1388 <      with List do
1389 <      begin
1390 <        BeginUpdate;
1391 <        try
1392 <          Clear;
1393 <          while (not Query.EOF) and (Query.Next <> nil) do
1394 <            List.Add(TrimRight(Query.Current[0].AsString));
1395 <        finally
1396 <          EndUpdate;
1397 <        end;
1398 <      end;
1399 <    finally
1400 <      Query.Free;
1401 <      FInternalTransaction.Commit;
1402 <    end;
1403 <  end;
1404 < end;
1405 <
1406 < { TIBTransaction }
1407 <
1408 < constructor TIBTransaction.Create(AOwner: TComponent);
1409 < begin
1410 <  inherited Create(AOwner);
1411 <  FIBLoaded := False;
1412 <  CheckIBLoaded;
1413 <  FIBLoaded := True;
1414 <  CheckIBLoaded;
1415 <  FDatabases := TList.Create;
1416 <  FSQLObjects := TList.Create;
1417 <  FHandle := nil;
1418 <  FTPB := nil;
1419 <  FTPBLength := 0;
1420 <  FTRParams := TStringList.Create;
1421 <  FTRParamsChanged := True;
1422 <  TStringList(FTRParams).OnChange := TRParamsChange;
1423 <  TStringList(FTRParams).OnChanging := TRParamsChanging;
1424 <  FTimer := TTimer.Create(Self);
1425 <  FTimer.Enabled := False;
1426 <  FTimer.Interval := 0;
1427 <  FTimer.OnTimer := TimeoutTransaction;
1428 <  FDefaultAction := taCommit;
1429 < end;
1430 <
1431 < destructor TIBTransaction.Destroy;
1432 < var
1433 <  i: Integer;
1434 < begin
1435 <  if FIBLoaded then
1436 <  begin
1437 <    if InTransaction then
1438 <      EndTransaction(FDefaultAction, True);
1439 <    for i := 0 to FSQLObjects.Count - 1 do
1440 <      if FSQLObjects[i] <> nil then
1441 <        SQLObjects[i].DoTransactionFree;
1442 <    RemoveSQLObjects;
1443 <    RemoveDatabases;
1444 <    FreeMem(FTPB);
1445 <    FTPB := nil;
1446 <    FTRParams.Free;
1447 <    FSQLObjects.Free;
1448 <    FDatabases.Free;
1449 <  end;
1450 <  inherited Destroy;
1451 < end;
1452 <
1453 < function TIBTransaction.Call(ErrCode: ISC_STATUS;
1454 <  RaiseError: Boolean): ISC_STATUS;
1455 < var
1456 <  i: Integer;
1457 < begin
1458 <  result := ErrCode;
1459 <  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1460 <    Databases[i].FCanTimeout := False;
1461 <  FCanTimeout := False;
1462 <  if RaiseError and (result > 0) then
1463 <    IBDataBaseError;
1464 < end;
1465 <
1466 < procedure TIBTransaction.CheckDatabasesInList;
1467 < begin
1468 <  if GetDatabaseCount = 0 then
1469 <    IBError(ibxeNoDatabasesInTransaction, [nil]);
1470 < end;
1471 <
1472 < procedure TIBTransaction.CheckInTransaction;
1473 < begin
1474 <  if FStreamedActive and (not InTransaction) then
1475 <    Loaded;
1476 <  if (FHandle = nil) then
1477 <    IBError(ibxeNotInTransaction, [nil]);
1478 < end;
1479 <
1480 < procedure TIBTransaction.DoBeforeTransactionEnd;
1481 < begin
1482 <  if Assigned(FBeforeTransactionEnd) then
1483 <    FBeforeTransactionEnd(self);
1484 < end;
1485 <
1486 < procedure TIBTransaction.DoAfterTransactionEnd;
1487 < begin
1488 <  if Assigned(FAfterTransactionEnd) then
1489 <    FAfterTransactionEnd(self);
1490 < end;
1491 <
1492 < procedure TIBTransaction.DoOnStartTransaction;
1493 < begin
1494 <  if assigned(FOnStartTransaction) then
1495 <    OnStartTransaction(self);
1496 < end;
1497 <
1498 < procedure TIBTransaction.DoAfterExecQuery(Sender: TObject);
1499 < begin
1500 <  if assigned(FAfterExecQuery) then
1501 <    AfterExecQuery(Sender);
1502 < end;
1503 <
1504 < procedure TIBTransaction.DoAfterEdit(Sender: TObject);
1505 < begin
1506 <  if assigned(FAfterEdit) then
1507 <    AfterEdit(Sender);
1508 < end;
1509 <
1510 < procedure TIBTransaction.DoAfterDelete(Sender: TObject);
1511 < begin
1512 <  if assigned(FAfterDelete) then
1513 <    AfterDelete(Sender);
1514 < end;
1515 <
1516 < procedure TIBTransaction.DoAfterInsert(Sender: TObject);
1517 < begin
1518 <  if assigned(FAfterInsert) then
1519 <    AfterInsert(Sender);
1520 < end;
1521 <
1522 < procedure TIBTransaction.DoAfterPost(Sender: TObject);
1523 < begin
1524 <  if assigned(FAfterPost) then
1525 <    AfterPost(Sender);
1526 < end;
1527 <
1528 < procedure TIBTransaction.EnsureNotInTransaction;
1529 < begin
1530 <  if csDesigning in ComponentState then
1531 <  begin
1532 <    if FHandle <> nil then
1533 <      Rollback;
1534 <  end;
1535 < end;
1536 <
1537 < procedure TIBTransaction.CheckNotInTransaction;
1538 < begin
1539 <  if (FHandle <> nil) then
1540 <    IBError(ibxeInTransaction, [nil]);
1541 < end;
1542 <
1543 < function TIBTransaction.AddDatabase(db: TIBDatabase): Integer;
1544 < var
1545 <  i: Integer;
1546 <  NilFound: Boolean;
1547 < begin
1548 <  i := FindDatabase(db);
1549 <  if i <> -1 then
1550 <  begin
1551 <    result := i;
1552 <    exit;
1553 <  end;
1554 <  NilFound := False;
1555 <  i := 0;
1556 <  while (not NilFound) and (i < FDatabases.Count) do
1557 <  begin
1558 <    NilFound := (FDatabases[i] = nil);
1559 <    if (not NilFound) then
1560 <      Inc(i);
1561 <  end;
1562 <  if (NilFound) then
1563 <  begin
1564 <    FDatabases[i] := db;
1565 <    result := i;
1566 <  end
1567 <  else
1568 <  begin
1569 <    result := FDatabases.Count;
1570 <    FDatabases.Add(db);
1571 <  end;
1572 < end;
1573 <
1574 < function TIBTransaction.AddSQLObject(ds: TIBBase): Integer;
1575 < begin
1576 <  result := 0;
1577 <  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
1578 <    Inc(result);
1579 <  if (result = FSQLObjects.Count) then
1580 <    FSQLObjects.Add(ds)
1581 <  else
1582 <    FSQLObjects[result] := ds;
1583 < end;
1584 <
1585 < procedure TIBTransaction.Commit;
1586 < begin
1587 <  EndTransaction(TACommit, False);
1588 < end;
1589 <
1590 < procedure TIBTransaction.CommitRetaining;
1591 < begin
1592 <  EndTransaction(TACommitRetaining, False);
1593 < end;
1594 <
1595 < procedure TIBTransaction.EndTransaction(Action: TTransactionAction;
1596 <  Force: Boolean);
1597 < var
1598 <  status: ISC_STATUS;
1599 <  i: Integer;
1600 < begin
1601 <  CheckInTransaction;
1602 <  if FInEndTransaction then Exit;
1603 <  FInEndTransaction := true;
1604 <  FEndAction := Action;
1605 <  try
1606 <  case Action of
1607 <    TARollback, TACommit:
1608 <    begin
1609 <      if (HandleIsShared) and
1610 <         (Action <> FDefaultAction) and
1611 <         (not Force) then
1612 <        IBError(ibxeCantEndSharedTransaction, [nil]);
1613 <      DoBeforeTransactionEnd;
1614 <      for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1615 <        SQLObjects[i].DoBeforeTransactionEnd(Action);
1616 <      if InTransaction then
1617 <      begin
1618 <        if HandleIsShared then
1619 <        begin
1620 <          FHandle := nil;
1621 <          FHandleIsShared := False;
1622 <          status := 0;
1623 <        end
1624 <        else
1625 <          if (Action = TARollback) then
1626 <            status := Call(isc_rollback_transaction(StatusVector, @FHandle), False)
1627 <          else
1628 <            status := Call(isc_commit_transaction(StatusVector, @FHandle), False);
1629 <        if ((Force) and (status > 0)) then
1630 <          status := Call(isc_rollback_transaction(StatusVector, @FHandle), False);
1631 <        if Force then
1632 <          FHandle := nil
1633 <        else
1634 <          if (status > 0) then
1635 <            IBDataBaseError;
1636 <        for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1637 <          SQLObjects[i].DoAfterTransactionEnd;
1638 <        DoAfterTransactionEnd;
1639 <      end;
1640 <    end;
1641 <    TACommitRetaining:
1642 <      Call(isc_commit_retaining(StatusVector, @FHandle), True);
1643 <    TARollbackRetaining:
1644 <      Call(isc_rollback_retaining(StatusVector, @FHandle), True);
1645 <  end;
1646 <  if not (csDesigning in ComponentState) then
1647 <  begin
1648 <    case Action of
1649 <      TACommit:
1650 <        MonitorHook.TRCommit(Self);
1651 <      TARollback:
1652 <        MonitorHook.TRRollback(Self);
1653 <      TACommitRetaining:
1654 <        MonitorHook.TRCommitRetaining(Self);
1655 <      TARollbackRetaining:
1656 <        MonitorHook.TRRollbackRetaining(Self);
1657 <    end;
1658 <  end;
1659 <  finally
1660 <    FInEndTransaction := false
1661 <  end;
1662 < end;
1663 <
1664 < function TIBTransaction.GetDatabase(Index: Integer): TIBDatabase;
1665 < begin
1666 <  result := FDatabases[Index];
1667 < end;
1668 <
1669 < function TIBTransaction.GetDatabaseCount: Integer;
1670 < var
1671 <  i, Cnt: Integer;
1672 < begin
1673 <  result := 0;
1674 <  Cnt := FDatabases.Count - 1;
1675 <  for i := 0 to Cnt do if FDatabases[i] <> nil then
1676 <    Inc(result);
1677 < end;
1678 <
1679 < function TIBTransaction.GetSQLObject(Index: Integer): TIBBase;
1680 < begin
1681 <  result := FSQLObjects[Index];
1682 < end;
1683 <
1684 < function TIBTransaction.GetSQLObjectCount: Integer;
1685 < var
1686 <  i, Cnt: Integer;
1687 < begin
1688 <  result := 0;
1689 <  Cnt := FSQLObjects.Count - 1;
1690 <  for i := 0 to Cnt do if FSQLObjects[i] <> nil then
1691 <    Inc(result);
1692 < end;
1693 <
1694 < function TIBTransaction.GetInTransaction: Boolean;
1695 < begin
1696 <  result := (FHandle <> nil);
1697 < end;
1698 <
1699 < function TIBTransaction.FindDatabase(db: TIBDatabase): Integer;
1700 < var
1701 <  i: Integer;
1702 < begin
1703 <  result := -1;
1704 <  for i := 0 to FDatabases.Count - 1 do
1705 <    if db = TIBDatabase(FDatabases[i]) then
1706 <    begin
1707 <      result := i;
1708 <      break;
1709 <    end;
1710 < end;
1711 <
1712 < function TIBTransaction.FindDefaultDatabase: TIBDatabase;
1713 < var
1714 <  i: Integer;
1715 < begin
1716 <  result := FDefaultDatabase;
1717 <  if result = nil then
1718 <  begin
1719 <    for i := 0 to FDatabases.Count - 1 do
1720 <      if (TIBDatabase(FDatabases[i]) <> nil) and
1721 <        (TIBDatabase(FDatabases[i]).DefaultTransaction = self) then
1722 <      begin
1723 <        result := TIBDatabase(FDatabases[i]);
1724 <        break;
1725 <      end;
1726 <  end;
1727 < end;
1728 <
1729 < function TIBTransaction.GetEndAction: TTransactionAction;
1730 < begin
1731 <  if FInEndTransaction then
1732 <     Result := FEndAction
1733 <  else
1734 <     IBError(ibxeIB60feature, [nil])
1735 < end;
1736 <
1737 <
1738 < function TIBTransaction.GetIdleTimer: Integer;
1739 < begin
1740 <  result := FTimer.Interval;
1741 < end;
1742 <
1743 < procedure TIBTransaction.Loaded;
1744 < begin
1745 <  inherited Loaded;
1746 < end;
1747 <
1748 < procedure TIBTransaction.BeforeDatabaseDisconnect(DB: TIBDatabase);
1749 < begin
1750 <  if InTransaction then
1751 <    EndTransaction(FDefaultAction, True);
1752 < end;
1753 <
1754 < procedure TIBTransaction.RemoveDatabase(Idx: Integer);
1755 < var
1756 <  DB: TIBDatabase;
1757 < begin
1758 <  if ((Idx >= 0) and (FDatabases[Idx] <> nil)) then
1759 <  begin
1760 <    DB := Databases[Idx];
1761 <    FDatabases[Idx] := nil;
1762 <    DB.RemoveTransaction(DB.FindTransaction(Self));
1763 <    if DB = FDefaultDatabase then
1764 <      FDefaultDatabase := nil;
1765 <  end;
1766 < end;
1767 <
1768 < procedure TIBTransaction.RemoveDatabases;
1769 < var
1770 <  i: Integer;
1771 < begin
1772 <  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1773 <    RemoveDatabase(i);
1774 < end;
1775 <
1776 < procedure TIBTransaction.RemoveSQLObject(Idx: Integer);
1777 < var
1778 <  ds: TIBBase;
1779 < begin
1780 <  if ((Idx >= 0) and (FSQLObjects[Idx] <> nil)) then
1781 <  begin
1782 <    ds := SQLObjects[Idx];
1783 <    FSQLObjects[Idx] := nil;
1784 <    ds.Transaction := nil;
1785 <  end;
1786 < end;
1787 <
1788 < procedure TIBTransaction.RemoveSQLObjects;
1789 < var
1790 <  i: Integer;
1791 < begin
1792 <  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1793 <    RemoveSQLObject(i);
1794 < end;
1795 <
1796 < procedure TIBTransaction.Rollback;
1797 < begin
1798 <  EndTransaction(TARollback, False);
1799 < end;
1800 <
1801 < procedure TIBTransaction.RollbackRetaining;
1802 < begin
1803 <  EndTransaction(TARollbackRetaining, False);
1804 < end;
1805 <
1806 < procedure TIBTransaction.SetActive(Value: Boolean);
1807 < begin
1808 <  if csReading in ComponentState then
1809 <    FStreamedActive := Value
1810 <  else
1811 <    if Value and not InTransaction then
1812 <      StartTransaction
1813 <    else
1814 <      if not Value and InTransaction then
1815 <        Rollback;
1816 < end;
1817 <
1818 < procedure TIBTransaction.SetDefaultAction(Value: TTransactionAction);
1819 < begin
1820 < (*  if (Value = taRollbackRetaining) and (GetIBClientVersion < 6) then
1821 <    IBError(ibxeIB60feature, [nil]);*)
1822 <  FDefaultAction := Value;
1823 < end;
1824 <
1825 < procedure TIBTransaction.SetDefaultDatabase(Value: TIBDatabase);
1826 < var
1827 <  i: integer;
1828 < begin
1829 <  if (FDefaultDatabase <> nil) and (FDefaultDatabase <> Value) then
1830 <  begin
1831 <    i := FDefaultDatabase.FindTransaction(self);
1832 <    if (i <> -1) then
1833 <      FDefaultDatabase.RemoveTransaction(i);
1834 <  end;
1835 <  if (Value <> nil) and (FDefaultDatabase <> Value) then
1836 <  begin
1837 <    Value.AddTransaction(Self);
1838 <    AddDatabase(Value);
1839 <    for i := 0 to FSQLObjects.Count - 1 do
1840 <      if (FSQLObjects[i] <> nil) and
1841 <         (TIBBase(FSQLObjects[i]).Database = nil) then
1842 <         SetObjectProp(TIBBase(FSQLObjects[i]).Owner, 'Database', Value);
1843 <  end;
1844 <  FDefaultDatabase := Value;
1845 < end;
1846 <
1847 < procedure TIBTransaction.SetHandle(Value: TISC_TR_HANDLE);
1848 < begin
1849 <  if (HandleIsShared) then
1850 <    EndTransaction(DefaultAction, True)
1851 <  else
1852 <    CheckNotInTransaction;
1853 <  FHandle := Value;
1854 <  FHandleIsShared := (Value <> nil);
1855 < end;
1856 <
1857 < procedure TIBTransaction.Notification( AComponent: TComponent;
1858 <                                        Operation: TOperation);
1859 < var
1860 <  i: Integer;
1861 < begin
1862 <  inherited Notification( AComponent, Operation);
1863 <  if (Operation = opRemove) and (AComponent = FDefaultDatabase) then
1864 <  begin
1865 <    i := FindDatabase(FDefaultDatabase);
1866 <    if (i <> -1) then
1867 <      RemoveDatabase(i);
1868 <    FDefaultDatabase := nil;
1869 <  end;
1870 < end;
1871 <
1872 < procedure TIBTransaction.SetIdleTimer(Value: Integer);
1873 < begin
1874 <  if Value < 0 then
1875 <    IBError(ibxeTimeoutNegative, [nil])
1876 <  else
1877 <    if (Value = 0) then
1878 <    begin
1879 <      FTimer.Enabled := False;
1880 <      FTimer.Interval := 0;
1881 <    end
1882 <    else
1883 <      if (Value > 0) then
1884 <      begin
1885 <        FTimer.Interval := Value;
1886 <        if not (csDesigning in ComponentState) then
1887 <          FTimer.Enabled := True;
1888 <      end;
1889 < end;
1890 <
1891 < procedure TIBTransaction.SetTRParams(Value: TStrings);
1892 < begin
1893 <  FTRParams.Assign(Value);
1894 < end;
1895 <
1896 < procedure TIBTransaction.StartTransaction;
1897 < var
1898 <  pteb: PISC_TEB_ARRAY;
1899 <  TPB: String;
1900 <  i: Integer;
1901 < begin
1902 <  CheckNotInTransaction;
1903 <  CheckDatabasesInList;
1904 <  for i := 0 to FDatabases.Count - 1 do
1905 <   if  FDatabases[i] <> nil then
1906 <   begin
1907 <     with TIBDatabase(FDatabases[i]) do
1908 <     if not Connected then
1909 <       if FStreamedConnected then
1910 <       begin
1911 <         Open;
1912 <         FStreamedConnected := False;
1913 <       end
1914 <       else
1915 <         IBError(ibxeDatabaseClosed, [nil]);
1916 <   end;
1917 <  if FTRParamsChanged then
1918 <  begin
1919 <    FTRParamsChanged := False;
1920 <    GenerateTPB(FTRParams, TPB, FTPBLength);
1921 <    if FTPBLength > 0 then
1922 <    begin
1923 <      IBAlloc(FTPB, 0, FTPBLength);
1924 <      Move(TPB[1], FTPB[0], FTPBLength);
1925 <    end;
1926 <  end;
1927 <
1928 <  pteb := nil;
1929 <  IBAlloc(pteb, 0, DatabaseCount * SizeOf(TISC_TEB));
1930 <  try
1931 <    for i := 0 to DatabaseCount - 1 do if Databases[i] <> nil then
1932 <    begin
1933 <      pteb^[i].db_handle := @(Databases[i].Handle);
1934 <      pteb^[i].tpb_length := FTPBLength;
1935 <      pteb^[i].tpb_address := FTPB;
1936 <    end;
1937 <    if Call(isc_start_multiple(StatusVector, @FHandle,
1938 <                               DatabaseCount, PISC_TEB(pteb)), False) > 0 then
1939 <    begin
1940 <      FHandle := nil;
1941 <      IBDataBaseError;
1942 <    end;
1943 <    if not (csDesigning in ComponentState) then
1944 <      MonitorHook.TRStart(Self);
1945 <  finally
1946 <    FreeMem(pteb);
1947 <  end;
1948 <  DoOnStartTransaction;
1949 < end;
1950 <
1951 < procedure TIBTransaction.TimeoutTransaction(Sender: TObject);
1952 < begin
1953 <  if InTransaction then
1954 <  begin
1955 <    if FCanTimeout then
1956 <    begin
1957 <      EndTransaction(FDefaultAction, True);
1958 <      if Assigned(FOnIdleTimer) then
1959 <        FOnIdleTimer(Self);
1960 <    end
1961 <    else
1962 <      FCanTimeout := True;
1963 <  end;
1964 < end;
1965 <
1966 < procedure TIBTransaction.TRParamsChange(Sender: TObject);
1967 < begin
1968 <  FTRParamsChanged := True;
1969 < end;
1970 <
1971 < procedure TIBTransaction.TRParamsChanging(Sender: TObject);
1972 < begin
1973 <  EnsureNotInTransaction;
1974 <  CheckNotInTransaction;
1975 < end;
1976 <
1977 < { TIBBase }
1978 < constructor TIBBase.Create(AOwner: TObject);
1979 < begin
1980 <  FOwner := AOwner;
1981 < end;
1982 <
1983 < destructor TIBBase.Destroy;
1984 < begin
1985 <  SetDatabase(nil);
1986 <  SetTransaction(nil);
1987 <  inherited Destroy;
1988 < end;
1989 <
1990 < function TIBBase.GetCharSetSize(CharSetID: integer): integer;
1991 < begin
1992 <  if (CharSetID >= 0) and (CharSetID < Length(Database.FCharSetSizes)) then
1993 <    Result := Database.FCharSetSizes[CharSetID]
1994 <  else
1995 <    Result := 1; {Unknown character set}
1996 < end;
1997 <
1998 < procedure TIBBase.CheckDatabase;
1999 < begin
2000 <  if (FDatabase = nil) then
2001 <    IBError(ibxeDatabaseNotAssigned, [nil]);
2002 <  FDatabase.CheckActive;
2003 < end;
2004 <
2005 < procedure TIBBase.CheckTransaction;
2006 < begin
2007 <  if FTransaction = nil then
2008 <    IBError(ibxeTransactionNotAssigned, [nil]);
2009 <  FTransaction.CheckInTransaction;
2010 < end;
2011 <
2012 < function TIBBase.GetDBHandle: PISC_DB_HANDLE;
2013 < begin
2014 <  CheckDatabase;
2015 <  result := @FDatabase.Handle;
2016 < end;
2017 <
2018 < function TIBBase.GetTRHandle: PISC_TR_HANDLE;
2019 < begin
2020 <  CheckTransaction;
2021 <  result := @FTransaction.Handle;
2022 < end;
2023 <
2024 < procedure TIBBase.DoBeforeDatabaseConnect(DBParams: TStrings; var DBName: string
2025 <  );
2026 < begin
2027 <  if assigned(FBeforeDatabaseConnect) then
2028 <    BeforeDatabaseConnect(self,DBParams,DBName);
2029 < end;
2030 <
2031 < procedure TIBBase.DoAfterDatabaseConnect;
2032 < begin
2033 <  if assigned(FAfterDatabaseConnect) then
2034 <    AfterDatabaseConnect(self);
2035 < end;
2036 <
2037 < procedure TIBBase.DoBeforeDatabaseDisconnect;
2038 < begin
2039 <  if Assigned(BeforeDatabaseDisconnect) then
2040 <    BeforeDatabaseDisconnect(Self);
2041 < end;
2042 <
2043 < procedure TIBBase.DoAfterDatabaseDisconnect;
2044 < begin
2045 <  if Assigned(AfterDatabaseDisconnect) then
2046 <    AfterDatabaseDisconnect(Self);
2047 < end;
2048 <
2049 < procedure TIBBase.DoDatabaseFree;
2050 < begin
2051 <  if Assigned(OnDatabaseFree) then
2052 <    OnDatabaseFree(Self);
2053 <  SetDatabase(nil);
2054 <  SetTransaction(nil);
2055 < end;
2056 <
2057 < procedure TIBBase.DoBeforeTransactionEnd(Action: TTransactionAction);
2058 < begin
2059 <  if Assigned(BeforeTransactionEnd) then
2060 <    BeforeTransactionEnd(Self,Action);
2061 < end;
2062 <
2063 < procedure TIBBase.DoAfterTransactionEnd;
2064 < begin
2065 <  if Assigned(AfterTransactionEnd) then
2066 <    AfterTransactionEnd(Self);
2067 < end;
2068 <
2069 < procedure TIBBase.DoTransactionFree;
2070 < begin
2071 <  if Assigned(OnTransactionFree) then
2072 <    OnTransactionFree(Self);
2073 <  FTransaction := nil;
2074 < end;
2075 <
2076 < procedure TIBBase.DoAfterExecQuery(Sender: TObject);
2077 < begin
2078 <  if FTransaction <> nil then
2079 <    FTransaction.DoAfterExecQuery(Sender);
2080 < end;
2081 <
2082 < procedure TIBBase.DoAfterEdit(Sender: TObject);
2083 < begin
2084 <  if FTransaction <> nil then
2085 <    FTransaction.DoAfterEdit(Sender);
2086 < end;
2087 <
2088 < procedure TIBBase.DoAfterDelete(Sender: TObject);
2089 < begin
2090 <  if FTransaction <> nil then
2091 <    FTransaction.DoAfterDelete(Sender);
2092 < end;
2093 <
2094 < procedure TIBBase.DoAfterInsert(Sender: TObject);
2095 < begin
2096 <  if FTransaction <> nil then
2097 <    FTransaction.DoAfterInsert(Sender);
2098 < end;
2099 <
2100 < procedure TIBBase.DoAfterPost(Sender: TObject);
2101 < begin
2102 <  if FTransaction <> nil then
2103 <    FTransaction.DoAfterPost(Sender);
2104 < end;
2105 <
2106 < procedure TIBBase.SetDatabase(Value: TIBDatabase);
2107 < begin
2108 <  if (FDatabase <> nil) then
2109 <    FDatabase.RemoveSQLObject(FIndexInDatabase);
2110 <  FDatabase := Value;
2111 <  if (FDatabase <> nil) then
2112 <  begin
2113 <    FIndexInDatabase := FDatabase.AddSQLObject(Self);
2114 <    if (FTransaction = nil) then
2115 <      Transaction := FDatabase.FindDefaultTransaction;
2116 <  end;
2117 < end;
2118 <
2119 < procedure TIBBase.SetTransaction(Value: TIBTransaction);
2120 < begin
2121 <  if (FTransaction <> nil) then
2122 <    FTransaction.RemoveSQLObject(FIndexInTransaction);
2123 <  FTransaction := Value;
2124 <  if (FTransaction <> nil) then
2125 <  begin
2126 <    FIndexInTransaction := FTransaction.AddSQLObject(Self);
2127 <    if (FDatabase = nil) then
2128 <      Database := FTransaction.FindDefaultDatabase;
2129 <  end;
2130 < end;
2131 <
2132 < { GenerateDPB -
2133 <  Given a string containing a textual representation
2134 <  of the database parameters, generate a database
2135 <  parameter buffer, and return it and its length
2136 <  in DPB and DPBLength, respectively. }
2137 <
2138 < procedure GenerateDPB(sl: TStrings; var DPB: string; var DPBLength: Short);
2139 < var
2140 <  i, j, pval: Integer;
2141 <  DPBVal: UShort;
2142 <  ParamName, ParamValue: string;
2143 < begin
2144 <  { The DPB is initially empty, with the exception that
2145 <    the DPB version must be the first byte of the string. }
2146 <  DPBLength := 1;
2147 <  DPB := Char(isc_dpb_version1);
2148 <
2149 <  {Iterate through the textual database parameters, constructing
2150 <   a DPB on-the-fly }
2151 <  for i := 0 to sl.Count - 1 do
2152 <  begin
2153 <    { Get the parameter's name and value from the list,
2154 <      and make sure that the name is all lowercase with
2155 <      no leading 'isc_dpb_' prefix
2156 <    }
2157 <    if (Trim(sl.Names[i]) = '') then
2158 <      continue;
2159 <    ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2160 <    ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2161 <    if (Pos(DPBPrefix, ParamName) = 1) then {mbcs ok}
2162 <      Delete(ParamName, 1, Length(DPBPrefix));
2163 <     { We want to translate the parameter name to some Integer
2164 <       value. We do this by scanning through a list of known
2165 <       database parameter names (DPBConstantNames, defined above) }
2166 <    DPBVal := 0;
2167 <    { Find the parameter }
2168 <    for j := 1 to isc_dpb_last_dpb_constant do
2169 <      if (ParamName = DPBConstantNames[j]) then
2170 <      begin
2171 <        DPBVal := j;
2172 <        break;
2173 <      end;
2174 <     {  A database parameter either contains a string value (case 1)
2175 <       or an Integer value (case 2)
2176 <       or no value at all (case 3)
2177 <       or an error needs to be generated (case else)  }
2178 <    case DPBVal of
2179 <      isc_dpb_user_name, isc_dpb_password, isc_dpb_password_enc,
2180 <      isc_dpb_sys_user_name, isc_dpb_license, isc_dpb_encrypt_key,
2181 <      isc_dpb_lc_messages, isc_dpb_lc_ctype,
2182 <      isc_dpb_sql_role_name, isc_dpb_sql_dialect:
2183 <      begin
2184 <        if DPBVal = isc_dpb_sql_dialect then
2185 <          ParamValue[1] := Char(Ord(ParamValue[1]) - 48);
2186 <        DPB := DPB +
2187 <               Char(DPBVal) +
2188 <               Char(Length(ParamValue)) +
2189 <               ParamValue;
2190 <        Inc(DPBLength, 2 + Length(ParamValue));
2191 <      end;
2192 <      isc_dpb_num_buffers, isc_dpb_dbkey_scope, isc_dpb_force_write,
2193 <      isc_dpb_no_reserve, isc_dpb_damaged, isc_dpb_verify:
2194 <      begin
2195 <        DPB := DPB +
2196 <               Char(DPBVal) +
2197 <               #1 +
2198 <               Char(StrToInt(ParamValue));
2199 <        Inc(DPBLength, 3);
2200 <      end;
2201 <      isc_dpb_sweep:
2202 <      begin
2203 <        DPB := DPB +
2204 <               Char(DPBVal) +
2205 <               #1 +
2206 <               Char(isc_dpb_records);
2207 <        Inc(DPBLength, 3);
2208 <      end;
2209 <      isc_dpb_sweep_interval:
2210 <      begin
2211 <        pval := StrToInt(ParamValue);
2212 <        DPB := DPB +
2213 <               Char(DPBVal) +
2214 <               #4 +
2215 <               PChar(@pval)[0] +
2216 <               PChar(@pval)[1] +
2217 <               PChar(@pval)[2] +
2218 <               PChar(@pval)[3];
2219 <        Inc(DPBLength, 6);
2220 <      end;
2221 <      isc_dpb_activate_shadow, isc_dpb_delete_shadow, isc_dpb_begin_log,
2222 <      isc_dpb_quit_log:
2223 <      begin
2224 <        DPB := DPB +
2225 <               Char(DPBVal) +
2226 <               #1 + #0;
2227 <        Inc(DPBLength, 3);
2228 <      end;
2229 <      else
2230 <      begin
2231 <        if (DPBVal > 0) and
2232 <           (DPBVal <= isc_dpb_last_dpb_constant) then
2233 <          IBError(ibxeDPBConstantNotSupported, [DPBConstantNames[DPBVal]])
2234 <        else
2235 <          IBError(ibxeDPBConstantUnknownEx, [sl.Names[i]]);
2236 <      end;
2237 <    end;
2238 <  end;
2239 < end;
2240 <
2241 < { GenerateTPB -
2242 <  Given a string containing a textual representation
2243 <  of the transaction parameters, generate a transaction
2244 <  parameter buffer, and return it and its length in
2245 <  TPB and TPBLength, respectively. }
2246 < procedure GenerateTPB(sl: TStrings; var TPB: string; var TPBLength: Short);
2247 < var
2248 <  i, j, TPBVal, ParamLength: Integer;
2249 <  ParamName, ParamValue: string;
2250 < begin
2251 <  TPB := '';
2252 <  if (sl.Count = 0) then
2253 <    TPBLength := 0
2254 <  else
2255 <  begin
2256 <    TPBLength := sl.Count + 1;
2257 <    TPB := TPB + Char(isc_tpb_version3);
2258 <  end;
2259 <  for i := 0 to sl.Count - 1 do
2260 <  begin
2261 <    if (Trim(sl[i]) =  '') then
2262 <    begin
2263 <      Dec(TPBLength);
2264 <      Continue;
2265 <    end;
2266 <    if (Pos('=', sl[i]) = 0) then {mbcs ok}
2267 <      ParamName := LowerCase(sl[i]) {mbcs ok}
2268 <    else
2269 <    begin
2270 <      ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2271 <      ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2272 <    end;
2273 <    if (Pos(TPBPrefix, ParamName) = 1) then {mbcs ok}
2274 <      Delete(ParamName, 1, Length(TPBPrefix));
2275 <    TPBVal := 0;
2276 <    { Find the parameter }
2277 <    for j := 1 to isc_tpb_last_tpb_constant do
2278 <      if (ParamName = TPBConstantNames[j]) then
2279 <      begin
2280 <        TPBVal := j;
2281 <        break;
2282 <      end;
2283 <    { Now act on it }
2284 <    case TPBVal of
2285 <      isc_tpb_consistency, isc_tpb_exclusive, isc_tpb_protected,
2286 <      isc_tpb_concurrency, isc_tpb_shared, isc_tpb_wait, isc_tpb_nowait,
2287 <      isc_tpb_read, isc_tpb_write, isc_tpb_ignore_limbo,
2288 <      isc_tpb_read_committed, isc_tpb_rec_version, isc_tpb_no_rec_version:
2289 <        TPB := TPB + Char(TPBVal);
2290 <      isc_tpb_lock_read, isc_tpb_lock_write:
2291 <      begin
2292 <        TPB := TPB + Char(TPBVal);
2293 <        { Now set the string parameter }
2294 <        ParamLength := Length(ParamValue);
2295 <        Inc(TPBLength, ParamLength + 1);
2296 <        TPB := TPB + Char(ParamLength) + ParamValue;
2297 <      end;
2298 <      else
2299 <      begin
2300 <        if (TPBVal > 0) and
2301 <           (TPBVal <= isc_tpb_last_tpb_constant) then
2302 <          IBError(ibxeTPBConstantNotSupported, [TPBConstantNames[TPBVal]])
2303 <        else
2304 <          IBError(ibxeTPBConstantUnknownEx, [sl.Names[i]]);
2305 <      end;
2306 <    end;
2307 <  end;
2308 < end;
2309 <
2310 < end.
2311 <
2312 <
2313 <
2314 <
2315 <
1 > {************************************************************************}
2 > {                                                                        }
3 > {       Borland Delphi Visual Component Library                          }
4 > {       InterBase Express core components                                }
5 > {                                                                        }
6 > {       Copyright (c) 1998-2000 Inprise Corporation                      }
7 > {                                                                        }
8 > {    InterBase Express is based in part on the product                   }
9 > {    Free IB Components, written by Gregory H. Deatz for                 }
10 > {    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
11 > {    Free IB Components is used under license.                           }
12 > {                                                                        }
13 > {    The contents of this file are subject to the InterBase              }
14 > {    Public License Version 1.0 (the "License"); you may not             }
15 > {    use this file except in compliance with the License. You            }
16 > {    may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17 > {    Software distributed under the License is distributed on            }
18 > {    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either              }
19 > {    express or implied. See the License for the specific language       }
20 > {    governing rights and limitations under the License.                 }
21 > {    The Original Code was created by InterBase Software Corporation     }
22 > {       and its successors.                                              }
23 > {    Portions created by Inprise Corporation are Copyright (C) Inprise   }
24 > {       Corporation. All Rights Reserved.                                }
25 > {    Contributor(s): Jeff Overcash                                       }
26 > {                                                                        }
27 > {    IBX For Lazarus (Firebird Express)                                  }
28 > {    Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29 > {    Portions created by MWA Software are copyright McCallum Whyman      }
30 > {    Associates Ltd 2011                                                 }
31 > {                                                                        }
32 > {************************************************************************}
33 >
34 > unit IBDatabase;
35 >
36 > {$Mode Delphi}
37 >
38 > {$codepage UTF8}
39 >
40 > interface
41 >
42 > uses
43 > {$IFDEF WINDOWS }
44 >  Windows,
45 > {$ELSE}
46 >  unix,
47 > {$ENDIF}
48 >  SysUtils, Classes, FPTimer, IBExternals, DB, IB, CustApp, IBTypes;
49 >
50 > const
51 >  DPBPrefix = 'isc_dpb_';
52 >  DPBConstantNames: array[1..isc_dpb_last_dpb_constant] of string = (
53 >    'cdd_pathname',
54 >    'allocation',
55 >    'journal',
56 >    'page_size',
57 >    'num_buffers',
58 >    'buffer_length',
59 >    'debug',
60 >    'garbage_collect',
61 >    'verify',
62 >    'sweep',
63 >    'enable_journal',
64 >    'disable_journal',
65 >    'dbkey_scope',
66 >    'number_of_users',
67 >    'trace',
68 >    'no_garbage_collect',
69 >    'damaged',
70 >    'license',
71 >    'sys_user_name',
72 >    'encrypt_key',
73 >    'activate_shadow',
74 >    'sweep_interval',
75 >    'delete_shadow',
76 >    'force_write',
77 >    'begin_log',
78 >    'quit_log',
79 >    'no_reserve',
80 >    'user_name',
81 >    'password',
82 >    'password_enc',
83 >    'sys_user_name_enc',
84 >    'interp',
85 >    'online_dump',
86 >    'old_file_size',
87 >    'old_num_files',
88 >    'old_file',
89 >    'old_start_page',
90 >    'old_start_seqno',
91 >    'old_start_file',
92 >    'drop_walfile',
93 >    'old_dump_id',
94 >    'wal_backup_dir',
95 >    'wal_chkptlen',
96 >    'wal_numbufs',
97 >    'wal_bufsize',
98 >    'wal_grp_cmt_wait',
99 >    'lc_messages',
100 >    'lc_ctype',
101 >    'cache_manager',
102 >    'shutdown',
103 >    'online',
104 >    'shutdown_delay',
105 >    'reserved',
106 >    'overwrite',
107 >    'sec_attach',
108 >    'disable_wal',
109 >    'connect_timeout',
110 >    'dummy_packet_interval',
111 >    'gbak_attach',
112 >    'sql_role_name',
113 >    'set_page_buffers',
114 >    'working_directory',
115 >    'sql_dialect',
116 >    'set_db_readonly',
117 >    'set_db_sql_dialect',
118 >    'gfix_attach',
119 >    'gstat_attach',
120 >    'set_db_charset',
121 >    'gsec_attach',
122 >    'address_path' ,
123 >    'process_id',
124 >    'no_db_triggers',
125 >    'trusted_auth',
126 >    'process_name',
127 >    'trusted_role',
128 >    'org_filename',
129 >    'utf8_ilename',
130 >    'ext_call_depth'
131 >  );
132 >
133 >  TPBPrefix = 'isc_tpb_';
134 >  TPBConstantNames: array[1..isc_tpb_last_tpb_constant] of string = (
135 >    'consistency',
136 >    'concurrency',
137 >    'shared',
138 >    'protected',
139 >    'exclusive',
140 >    'wait',
141 >    'nowait',
142 >    'read',
143 >    'write',
144 >    'lock_read',
145 >    'lock_write',
146 >    'verb_time',
147 >    'commit_time',
148 >    'ignore_limbo',
149 >    'read_committed',
150 >    'autocommit',
151 >    'rec_version',
152 >    'no_rec_version',
153 >    'restart_requests',
154 >    'no_auto_undo',
155 >    'lock_timeout'
156 >  );
157 >
158 > type
159 >
160 >  TIBDatabase = class;
161 >  TIBTransaction = class;
162 >  TIBBase = class;
163 >
164 >  TIBDatabaseLoginEvent = procedure(Database: TIBDatabase;
165 >    LoginParams: TStrings) of object;
166 >
167 >  TIBFileName = type string;
168 >  { TIBDatabase }
169 >  TIBDataBase = class(TCustomConnection)
170 >  private
171 >    FAttachment: IAttachment;
172 >    FCreateDatabase: boolean;
173 >    FCreateIfNotExists: boolean;
174 >    FDPB: IDPB;
175 >    FAllowStreamedConnected: boolean;
176 >    FHiddenPassword: string;
177 >    FOnCreateDatabase: TNotifyEvent;
178 >    FOnLogin: TIBDatabaseLoginEvent;
179 >    FSQLHourGlass: Boolean;
180 >    FTraceFlags: TTraceFlags;
181 >    FDBSQLDialect: Integer;
182 >    FSQLDialect: Integer;
183 >    FOnDialectDowngradeWarning: TNotifyEvent;
184 >    FSQLObjects: TList;
185 >    FTransactions: TList;
186 >    FDBName: TIBFileName;
187 >    FDBParams: TStrings;
188 >    FDBParamsChanged: Boolean;
189 >    FOnIdleTimer: TNotifyEvent;
190 >    FDefaultTransaction: TIBTransaction;
191 >    FInternalTransaction: TIBTransaction;
192 >    FTimer: TFPTimer;
193 >    FUserNames: TStringList;
194 >    FDataSets: TList;
195 >    FLoginCalled: boolean;
196 >    FUseDefaultSystemCodePage: boolean;
197 >    procedure EnsureInactive;
198 >    function GetDBSQLDialect: Integer;
199 >    function GetDefaultCharSetID: integer;
200 >    function GetDefaultCharSetName: AnsiString;
201 >    function GetDefaultCodePage: TSystemCodePage;
202 >    function GetSQLDialect: Integer;
203 >    procedure SetSQLDialect(const Value: Integer);
204 >    procedure ValidateClientSQLDialect;
205 >    procedure DBParamsChange(Sender: TObject);
206 >    procedure DBParamsChanging(Sender: TObject);
207 >    function GetSQLObject(Index: Integer): TIBBase;
208 >    function GetSQLObjectCount: Integer;
209 >    function GetIdleTimer: Integer;
210 >    function GetTransaction(Index: Integer): TIBTransaction;
211 >    function GetTransactionCount: Integer;
212 >    function Login(var aDatabaseName: string): Boolean;
213 >    procedure SetDatabaseName(const Value: TIBFileName);
214 >    procedure SetDBParamByDPB(const Idx: Integer; Value: String);
215 >    procedure SetDBParams(Value: TStrings);
216 >    procedure SetDefaultTransaction(Value: TIBTransaction);
217 >    procedure SetIdleTimer(Value: Integer);
218 >    procedure TimeoutConnection(Sender: TObject);
219 >    function GetIsReadOnly: Boolean;
220 >    function AddSQLObject(ds: TIBBase): Integer;
221 >    procedure RemoveSQLObject(Idx: Integer);
222 >    procedure RemoveSQLObjects;
223 >    procedure InternalClose(Force: Boolean);
224 >
225 >  protected
226 >    procedure DoConnect; override;
227 >    procedure DoDisconnect; override;
228 >    function GetConnected: Boolean; override;
229 >    procedure CheckStreamConnect;
230 >    procedure HandleException(Sender: TObject);
231 >    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
232 >    function GetDataset(Index : longint) : TDataset; override;
233 >    function GetDataSetCount : Longint; override;
234 >    procedure ReadState(Reader: TReader); override;
235 >    procedure SetConnected (Value : boolean); override;
236 >  public
237 >    constructor Create(AOwner: TComponent); override;
238 >    destructor Destroy; override;
239 >    procedure ApplyUpdates(const DataSets: array of TDataSet);
240 >    procedure CloseDataSets;
241 >    procedure CheckActive;
242 >    procedure CheckInactive;
243 >    procedure CreateDatabase; overload;
244 >    procedure CreateDatabase(createDatabaseSQL: string); overload;
245 >    procedure DropDatabase;
246 >    procedure ForceClose;
247 >    procedure GetFieldNames(const TableName: string; List: TStrings);
248 >    procedure GetTableNames(List: TStrings; SystemTables: Boolean = False);
249 >    function IndexOfDBConst(st: String): Integer;
250 >    function TestConnected: Boolean;
251 >    procedure CheckDatabaseName;
252 >    function AddTransaction(TR: TIBTransaction): Integer;
253 >    function FindTransaction(TR: TIBTransaction): Integer;
254 >    function FindDefaultTransaction(): TIBTransaction;
255 >    procedure RemoveTransaction(Idx: Integer);
256 >    procedure RemoveTransactions;
257 >
258 >    property Attachment: IAttachment read FAttachment;
259 >    property DBSQLDialect : Integer read FDBSQLDialect;
260 >    property IsReadOnly: Boolean read GetIsReadOnly;
261 >    property SQLObjectCount: Integer read GetSQLObjectCount;
262 >    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
263 >    property TransactionCount: Integer read GetTransactionCount;
264 >    property Transactions[Index: Integer]: TIBTransaction read GetTransaction;
265 >    property InternalTransaction: TIBTransaction read FInternalTransaction;
266 >    property DefaultCharSetName: AnsiString read GetDefaultCharSetName;
267 >    property DefaultCharSetID: integer read GetDefaultCharSetID;
268 >    property DefaultCodePage: TSystemCodePage read GetDefaultCodePage;
269 >
270 >  published
271 >    property Connected;
272 >    property CreateIfNotExists: boolean read FCreateIfNotExists write FCreateIfNotExists;
273 >    property AllowStreamedConnected: boolean read FAllowStreamedConnected
274 >             write FAllowStreamedConnected;
275 >    property DatabaseName: TIBFileName read FDBName write SetDatabaseName;
276 >    property Params: TStrings read FDBParams write SetDBParams;
277 >    property LoginPrompt default True;
278 >    property DefaultTransaction: TIBTransaction read FDefaultTransaction
279 >                                                 write SetDefaultTransaction;
280 >    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer;
281 >    property SQLDialect : Integer read GetSQLDialect write SetSQLDialect default 3;
282 >    property SQLHourGlass: Boolean read FSQLHourGlass write FSQLHourGlass default true;
283 >    property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
284 >    property UseDefaultSystemCodePage: boolean read FUseDefaultSystemCodePage
285 >                                               write FUseDefaultSystemCodePage;
286 >    property AfterConnect;
287 >    property AfterDisconnect;
288 >    property BeforeConnect;
289 >    property BeforeDisconnect;
290 >    property OnCreateDatabase: TNotifyEvent read FOnCreateDatabase write FOnCreateDatabase;
291 >    property OnLogin: TIBDatabaseLoginEvent read FOnLogin write FOnLogin;
292 >    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
293 >    property OnDialectDowngradeWarning: TNotifyEvent read FOnDialectDowngradeWarning write FOnDialectDowngradeWarning;
294 >  end;
295 >
296 >  TDefaultEndAction = TARollback..TACommit;
297 >
298 >  { TIBTransaction }
299 >
300 >  TIBTransaction = class(TComponent)
301 >  private
302 >    FTransactionIntf: ITransaction;
303 >    FAfterDelete: TNotifyEvent;
304 >    FAfterEdit: TNotifyEvent;
305 >    FAfterExecQuery: TNotifyEvent;
306 >    FAfterInsert: TNotifyEvent;
307 >    FAfterPost: TNotifyEvent;
308 >    FAfterTransactionEnd: TNotifyEvent;
309 >    FBeforeTransactionEnd: TNotifyEvent;
310 >    FDatabases          : TList;
311 >    FOnStartTransaction: TNotifyEvent;
312 >    FSQLObjects         : TList;
313 >    FDefaultDatabase    : TIBDatabase;
314 >    FOnIdleTimer          : TNotifyEvent;
315 >    FStreamedActive     : Boolean;
316 >    FTPB                : ITPB;
317 >    FTimer              : TFPTimer;
318 >    FDefaultAction      : TDefaultEndAction;
319 >    FTRParams           : TStrings;
320 >    FTRParamsChanged    : Boolean;
321 >    FInEndTransaction   : boolean;
322 >    FEndAction          : TTransactionAction;
323 >    procedure DoBeforeTransactionEnd;
324 >    procedure DoAfterTransactionEnd;
325 >    procedure DoOnStartTransaction;
326 >    procedure DoAfterExecQuery(Sender: TObject);
327 >    procedure DoAfterEdit(Sender: TObject);
328 >    procedure DoAfterDelete(Sender: TObject);
329 >    procedure DoAfterInsert(Sender: TObject);
330 >    procedure DoAfterPost(Sender: TObject);
331 >    procedure EnsureNotInTransaction;
332 >    procedure EndTransaction(Action: TTransactionAction; Force: Boolean);
333 >    function GetDatabase(Index: Integer): TIBDatabase;
334 >    function GetDatabaseCount: Integer;
335 >    function GetSQLObject(Index: Integer): TIBBase;
336 >    function GetSQLObjectCount: Integer;
337 >    function GetInTransaction: Boolean;
338 >    function GetIdleTimer: Integer;
339 >    procedure BeforeDatabaseDisconnect(DB: TIBDatabase);
340 >    procedure SetActive(Value: Boolean);
341 >    procedure SetDefaultDatabase(Value: TIBDatabase);
342 >    procedure SetIdleTimer(Value: Integer);
343 >    procedure SetTRParams(Value: TStrings);
344 >    procedure TimeoutTransaction(Sender: TObject);
345 >    procedure TRParamsChange(Sender: TObject);
346 >    procedure TRParamsChanging(Sender: TObject);
347 >    function AddSQLObject(ds: TIBBase): Integer;
348 >    procedure RemoveSQLObject(Idx: Integer);
349 >    procedure RemoveSQLObjects;
350 >
351 >  protected
352 >    procedure Loaded; override;
353 >    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
354 >
355 >  public
356 >    constructor Create(AOwner: TComponent); override;
357 >    destructor Destroy; override;
358 >    procedure Commit;
359 >    procedure CommitRetaining;
360 >    procedure Rollback;
361 >    procedure RollbackRetaining;
362 >    procedure StartTransaction;
363 >    procedure CheckInTransaction;
364 >    procedure CheckNotInTransaction;
365 >
366 >    function AddDatabase(db: TIBDatabase): Integer;
367 >    function FindDatabase(db: TIBDatabase): Integer;
368 >    function FindDefaultDatabase: TIBDatabase;
369 >    function GetEndAction: TTransactionAction;
370 >    procedure RemoveDatabase(Idx: Integer);
371 >    procedure RemoveDatabases;
372 >    procedure CheckDatabasesInList;
373 >
374 >    property DatabaseCount: Integer read GetDatabaseCount;
375 >    property Databases[Index: Integer]: TIBDatabase read GetDatabase;
376 >    property SQLObjectCount: Integer read GetSQLObjectCount;
377 >    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
378 >    property InTransaction: Boolean read GetInTransaction;
379 >    property TransactionIntf: ITransaction read FTransactionIntf;
380 >    property TPB: ITPB read FTPB;
381 >  published
382 >    property Active: Boolean read GetInTransaction write SetActive;
383 >    property DefaultDatabase: TIBDatabase read FDefaultDatabase
384 >                                           write SetDefaultDatabase;
385 >    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer default 0;
386 >    property DefaultAction: TDefaultEndAction read FDefaultAction write FDefaultAction default taCommit;
387 >    property Params: TStrings read FTRParams write SetTRParams;
388 >    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
389 >    property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd
390 >                                             write FBeforeTransactionEnd;
391 >    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd
392 >                                            write FAfterTransactionEnd;
393 >    property OnStartTransaction: TNotifyEvent read FOnStartTransaction
394 >                                              write FOnStartTransaction;
395 >    property AfterExecQuery: TNotifyEvent read FAfterExecQuery
396 >                                              write FAfterExecQuery;
397 >    property AfterEdit: TNotifyEvent read FAfterEdit write FAfterEdit;
398 >    property AfterDelete: TNotifyEvent read FAfterDelete write FAfterDelete;
399 >    property AfterInsert: TNotifyEvent read FAfterInsert write FAfterInsert;
400 >    property AfterPost: TNotifyEvent read FAfterPost write FAfterPost;
401 >  end;
402 >
403 >  TTransactionEndEvent = procedure(Sender:TObject; Action: TTransactionAction) of object;
404 >  TBeforeDatabaseConnectEvent = procedure (Sender: TObject; DBParams: TStrings;
405 >                              var DBName: string) of object;
406 >
407 >  { TIBBase }
408 >
409 >  { Virtually all components in IB are "descendents" of TIBBase.
410 >    It is to more easily manage the database and transaction
411 >    connections. }
412 >  TIBBase = class(TObject)
413 >  protected
414 >    FBeforeDatabaseConnect: TBeforeDatabaseConnectEvent;
415 >    FDatabase: TIBDatabase;
416 >    FIndexInDatabase: Integer;
417 >    FTransaction: TIBTransaction;
418 >    FIndexInTransaction: Integer;
419 >    FOwner: TObject;
420 >    FBeforeDatabaseDisconnect: TNotifyEvent;
421 >    FAfterDatabaseDisconnect: TNotifyEvent;
422 >    FAfterDatabaseConnect: TNotifyEvent;
423 >    FOnDatabaseFree: TNotifyEvent;
424 >    FBeforeTransactionEnd: TTransactionEndEvent;
425 >    FAfterTransactionEnd: TNotifyEvent;
426 >    FOnTransactionFree: TNotifyEvent;
427 >
428 >    procedure DoBeforeDatabaseConnect(DBParams: TStrings;
429 >                              var DBName: string); virtual;
430 >    procedure DoAfterDatabaseConnect; virtual;
431 >    procedure DoBeforeDatabaseDisconnect; virtual;
432 >    procedure DoAfterDatabaseDisconnect; virtual;
433 >    procedure DoDatabaseFree; virtual;
434 >    procedure DoBeforeTransactionEnd(Action: TTransactionAction); virtual;
435 >    procedure DoAfterTransactionEnd; virtual;
436 >    procedure DoTransactionFree; virtual;
437 >    procedure SetDatabase(Value: TIBDatabase); virtual;
438 >    procedure SetTransaction(Value: TIBTransaction); virtual;
439 >  public
440 >    constructor Create(AOwner: TObject);
441 >    destructor Destroy; override;
442 >    procedure CheckDatabase; virtual;
443 >    procedure CheckTransaction; virtual;
444 >    procedure DoAfterExecQuery(Sender: TObject); virtual;
445 >    procedure DoAfterEdit(Sender: TObject); virtual;
446 >    procedure DoAfterDelete(Sender: TObject); virtual;
447 >    procedure DoAfterInsert(Sender: TObject); virtual;
448 >    procedure DoAfterPost(Sender: TObject); virtual;
449 >    procedure HandleException(Sender: TObject);
450 >    procedure SetCursor;
451 >    procedure RestoreCursor;
452 >  public
453 >    property BeforeDatabaseConnect: TBeforeDatabaseConnectEvent read FBeforeDatabaseConnect
454 >                                                 write FBeforeDatabaseConnect;
455 >    property AfterDatabaseConnect: TNotifyEvent read FAfterDatabaseConnect
456 >                                                write FAfterDatabaseConnect;
457 >    property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect
458 >                                                   write FBeforeDatabaseDisconnect;
459 >    property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect
460 >                                                  write FAfterDatabaseDisconnect;
461 >    property OnDatabaseFree: TNotifyEvent read FOnDatabaseFree write FOnDatabaseFree;
462 >    property BeforeTransactionEnd: TTransactionEndEvent read FBeforeTransactionEnd write FBeforeTransactionEnd;
463 >    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd write FAfterTransactionEnd;
464 >    property OnTransactionFree: TNotifyEvent read FOnTransactionFree write FOnTransactionFree;
465 >    property Database: TIBDatabase read FDatabase
466 >                                    write SetDatabase;
467 >    property Owner: TObject read FOwner;
468 >    property Transaction: TIBTransaction read FTransaction
469 >                                          write SetTransaction;
470 >  end;
471 >
472 > function GenerateDPB(sl: TStrings): IDPB;
473 > function GenerateTPB(sl: TStrings): ITPB;
474 >
475 >
476 > implementation
477 >
478 > uses  IBSQLMonitor, IBCustomDataSet, IBDatabaseInfo, IBSQL, IBUtils,
479 >     typInfo, FBMessages, IBErrorCodes;
480 >
481 > { TIBDatabase }
482 >
483 > constructor TIBDataBase.Create(AOwner: TComponent);
484 > begin
485 >  inherited Create(AOwner);
486 >  LoginPrompt := True;
487 >  FSQLObjects := TList.Create;
488 >  FTransactions := TList.Create;
489 >  FDBName := '';
490 >  FDBParams := TStringList.Create;
491 >  FSQLHourGlass := true;
492 >  if (AOwner <> nil) and
493 >     (AOwner is TCustomApplication) and
494 >     TCustomApplication(AOWner).ConsoleApplication then
495 >    LoginPrompt := false;
496 >  FDBParamsChanged := True;
497 >  TStringList(FDBParams).OnChange := DBParamsChange;
498 >  TStringList(FDBParams).OnChanging := DBParamsChanging;
499 >  FDPB := nil;
500 >  FUserNames := nil;
501 >  FInternalTransaction := TIBTransaction.Create(self);
502 >  FInternalTransaction.DefaultDatabase := Self;
503 >  FTimer := TFPTimer.Create(Self);
504 >  FTimer.Enabled := False;
505 >  FTimer.Interval := 0;
506 >  FTimer.OnTimer := TimeoutConnection;
507 >  FDBSQLDialect := 1;
508 >  FSQLDialect := 3;
509 >  FTraceFlags := [];
510 >  FDataSets := TList.Create;
511 >  CheckStreamConnect;
512 > end;
513 >
514 > destructor TIBDataBase.Destroy;
515 > var
516 >  i: Integer;
517 > begin
518 >  IdleTimer := 0;
519 >  if FAttachment <> nil then
520 >    ForceClose;
521 >  for i := 0 to FSQLObjects.Count - 1 do
522 >    if FSQLObjects[i] <> nil then
523 >      SQLObjects[i].DoDatabaseFree;
524 >  RemoveSQLObjects;
525 >  RemoveTransactions;
526 >  FInternalTransaction.Free;
527 >  FDPB := nil;
528 >  FDBParams.Free;
529 >  FSQLObjects.Free;
530 >  FUserNames.Free;
531 >  FTransactions.Free;
532 >  FDataSets.Free;
533 >  inherited Destroy;
534 > end;
535 >
536 > procedure TIBDataBase.CheckActive;
537 > begin
538 >  if StreamedConnected and (not Connected) then
539 >    Loaded;
540 >  if FAttachment = nil then
541 >    IBError(ibxeDatabaseClosed, [nil]);
542 > end;
543 >
544 > procedure TIBDataBase.EnsureInactive;
545 > begin
546 >  if csDesigning in ComponentState then
547 >  begin
548 >    if FAttachment <> nil then
549 >      Close;
550 >  end
551 > end;
552 >
553 > procedure TIBDataBase.CheckInactive;
554 > begin
555 >  if FAttachment <> nil then
556 >    IBError(ibxeDatabaseOpen, [nil]);
557 > end;
558 >
559 > procedure TIBDataBase.CheckDatabaseName;
560 > begin
561 >  if (Trim(FDBName) = '') then
562 >    IBError(ibxeDatabaseNameMissing, [nil]);
563 > end;
564 >
565 > function TIBDataBase.AddSQLObject(ds: TIBBase): Integer;
566 > begin
567 >  result := 0;
568 >  if (ds.Owner is TIBCustomDataSet) then
569 >    FDataSets.Add(ds.Owner);
570 >  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
571 >    Inc(result);
572 >  if (result = FSQLObjects.Count) then
573 >    FSQLObjects.Add(ds)
574 >  else
575 >    FSQLObjects[result] := ds;
576 > end;
577 >
578 > function TIBDataBase.AddTransaction(TR: TIBTransaction): Integer;
579 > begin
580 >  result := FindTransaction(TR);
581 >  if result <> -1 then
582 >  begin
583 >    result := -1;
584 >    exit;
585 >  end;
586 >  result := 0;
587 >  while (result < FTransactions.Count) and (FTransactions[result] <> nil) do
588 >    Inc(result);
589 >  if (result = FTransactions.Count) then
590 >    FTransactions.Add(TR)
591 >  else
592 >    FTransactions[result] := TR;
593 > end;
594 >
595 > procedure TIBDataBase.DoDisconnect;
596 > begin
597 >  if Connected then
598 >    InternalClose(False);
599 >  FDBSQLDialect := 1;
600 > end;
601 >
602 >  procedure TIBDataBase.CreateDatabase;
603 > begin
604 >  CheckInactive;
605 >  CheckDatabaseName;
606 >  FCreateDatabase := true;
607 >  Connected := true;
608 > end;
609 >
610 > procedure TIBDataBase.CreateDatabase(createDatabaseSQL: string);
611 > begin
612 >  CheckInactive;
613 >  FAttachment := FirebirdAPI.CreateDatabase(createDatabaseSQL,FSQLDialect);
614 >  FDBName := Attachment.GetConnectString;
615 >  if assigned(FOnCreateDatabase) and (FAttachment <> nil) then
616 >    OnCreateDatabase(self);
617 > end;
618 >
619 > procedure TIBDataBase.DropDatabase;
620 > begin
621 >  CheckActive;
622 >  FAttachment.DropDatabase;
623 >  FAttachment := nil;
624 > end;
625 >
626 > procedure TIBDataBase.DBParamsChange(Sender: TObject);
627 > begin
628 >  FDBParamsChanged := True;
629 > end;
630 >
631 > procedure TIBDataBase.DBParamsChanging(Sender: TObject);
632 > begin
633 >  EnsureInactive;
634 >  CheckInactive;
635 > end;
636 >
637 > function TIBDataBase.FindTransaction(TR: TIBTransaction): Integer;
638 > var
639 >  i: Integer;
640 > begin
641 >  result := -1;
642 >  for i := 0 to FTransactions.Count - 1 do
643 >    if TR = Transactions[i] then
644 >    begin
645 >      result := i;
646 >      break;
647 >    end;
648 > end;
649 >
650 >  function TIBDataBase.FindDefaultTransaction(): TIBTransaction;
651 > var
652 >  i: Integer;
653 > begin
654 >  result := FDefaultTransaction;
655 >  if result = nil then
656 >  begin
657 >    for i := 0 to FTransactions.Count - 1 do
658 >      if (Transactions[i] <> nil) and
659 >        (TIBTransaction(Transactions[i]).DefaultDatabase = self) and
660 >        (TIBTransaction(Transactions[i]) <> FInternalTransaction) then
661 >       begin
662 >         result := TIBTransaction(Transactions[i]);
663 >         break;
664 >       end;
665 >  end;
666 > end;
667 >
668 > procedure TIBDataBase.ForceClose;
669 > begin
670 >  if Connected then
671 >    InternalClose(True);
672 > end;
673 >
674 > function TIBDataBase.GetConnected: Boolean;
675 > begin
676 >  result := (FAttachment <> nil) and FAttachment.IsConnected;
677 > end;
678 >
679 > function TIBDataBase.GetSQLObject(Index: Integer): TIBBase;
680 > begin
681 >  result := FSQLObjects[Index];
682 > end;
683 >
684 > function TIBDataBase.GetSQLObjectCount: Integer;
685 > var
686 >  i: Integer;
687 > begin
688 >  result := 0;
689 >  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
690 >    Inc(result);
691 > end;
692 >
693 > function TIBDataBase.GetIdleTimer: Integer;
694 > begin
695 >  result := FTimer.Interval;
696 > end;
697 >
698 > function TIBDataBase.GetTransaction(Index: Integer): TIBTransaction;
699 > begin
700 >  result := FTransactions[Index];
701 > end;
702 >
703 > function TIBDataBase.GetTransactionCount: Integer;
704 > var
705 >  i: Integer;
706 > begin
707 >  result := 0;
708 >  for i := 0 to FTransactions.Count - 1 do
709 >    if FTransactions[i] <> nil then
710 >      Inc(result);
711 > end;
712 >
713 > function TIBDataBase.IndexOfDBConst(st: String): Integer;
714 > var
715 >  i, pos_of_str: Integer;
716 > begin
717 >  result := -1;
718 >  for i := 0 to Params.Count - 1 do
719 >  begin
720 >    pos_of_str := Pos(st, AnsiLowerCase(Params[i])); {mbcs ok}
721 >    if (pos_of_str = 1) or (pos_of_str = Length(DPBPrefix) + 1) then
722 >    begin
723 >      result := i;
724 >      break;
725 >    end;
726 >  end;
727 > end;
728 >
729 > procedure TIBDataBase.InternalClose(Force: Boolean);
730 > var
731 >  i: Integer;
732 > begin
733 >  CheckActive;
734 >  { Tell all connected transactions that we're disconnecting.
735 >    This is so transactions can commit/rollback, accordingly
736 >  }
737 >  for i := 0 to FTransactions.Count - 1 do
738 >  begin
739 >    try
740 >      if FTransactions[i] <> nil then
741 >        Transactions[i].BeforeDatabaseDisconnect(Self);
742 >    except
743 >      if not Force then
744 >        raise;
745 >    end;
746 >  end;
747 >  for i := 0 to FSQLObjects.Count - 1 do
748 >  begin
749 >    try
750 >      if FSQLObjects[i] <> nil then
751 >        SQLObjects[i].DoBeforeDatabaseDisconnect;
752 >    except
753 >      if not Force then
754 >        raise;
755 >    end;
756 >  end;
757 >
758 >  FAttachment.Disconnect(Force);
759 >  FAttachment := nil;
760 >
761 >  if not (csDesigning in ComponentState) then
762 >    MonitorHook.DBDisconnect(Self);
763 >
764 >  for i := 0 to FSQLObjects.Count - 1 do
765 >    if FSQLObjects[i] <> nil then
766 >      SQLObjects[i].DoAfterDatabaseDisconnect;
767 > end;
768 >
769 > procedure TIBDataBase.CheckStreamConnect;
770 > var
771 >  i: integer;
772 > begin
773 >  try
774 >    if not (csDesigning in ComponentState) and StreamedConnected and (not Connected) then
775 >    begin
776 >      for i := 0 to FTransactions.Count - 1 do
777 >        if  FTransactions[i] <> nil then
778 >        begin
779 >          with TIBTransaction(FTransactions[i]) do
780 >            if not Active then
781 >              if FStreamedActive and not InTransaction then
782 >              begin
783 >                StartTransaction;
784 >                FStreamedActive := False;
785 >              end;
786 >        end;
787 >      if (FDefaultTransaction <> nil) and
788 >         (FDefaultTransaction.FStreamedActive) and
789 >         (not FDefaultTransaction.InTransaction) then
790 >        FDefaultTransaction.StartTransaction;
791 >      StreamedConnected := False;
792 >    end;
793 >  except
794 >    if csDesigning in ComponentState then
795 >      HandleException(Self)
796 >    else
797 >      raise;
798 >  end;
799 > end;
800 >
801 > procedure TIBDataBase.HandleException(Sender: TObject);
802 > var aParent: TComponent;
803 > begin
804 >  aParent := Owner;
805 >  while aParent <> nil do
806 >  begin
807 >    if aParent is TCustomApplication then
808 >    begin
809 >      TCustomApplication(aParent).HandleException(Sender);
810 >      Exit;
811 >    end;
812 >    aParent := aParent.Owner;
813 >  end;
814 >  SysUtils.ShowException(ExceptObject,ExceptAddr);
815 > end;
816 >
817 > procedure TIBDataBase.Notification(AComponent: TComponent;
818 >   Operation: TOperation);
819 > var
820 >  i: Integer;
821 > begin
822 >  inherited Notification( AComponent, Operation);
823 >  if (Operation = opRemove) and (AComponent = FDefaultTransaction) then
824 >  begin
825 >    i := FindTransaction(FDefaultTransaction);
826 >    if (i <> -1) then
827 >      RemoveTransaction(i);
828 >    FDefaultTransaction := nil;
829 >  end;
830 > end;
831 >
832 > function TIBDataBase.Login(var aDatabaseName: string): Boolean;
833 > var
834 >  IndexOfUser, IndexOfPassword: Integer;
835 >  Username, Password, OldPassword: String;
836 >  LoginParams: TStrings;
837 >
838 >  procedure HidePassword;
839 >  var
840 >    I: Integer;
841 >    IndexAt: Integer;
842 >  begin
843 >    IndexAt := 0;
844 >    for I := 0 to Params.Count -1 do
845 >      if Pos('password', LowerCase(Trim(Params.Names[i]))) = 1 then {mbcs ok}
846 >      begin
847 >        FHiddenPassword := Params.Values[Params.Names[i]];
848 >        IndexAt := I;
849 >        break;
850 >      end;
851 >    if IndexAt <> 0 then
852 >      Params.Delete(IndexAt);
853 >  end;
854 >
855 > begin
856 >  Result := false;
857 >  if FLoginCalled then Exit;
858 >  FLoginCalled := true;
859 >  try
860 >  if Assigned(FOnLogin) and not (csDesigning in ComponentState) then
861 >  begin
862 >    result := True;
863 >    LoginParams := TStringList.Create;
864 >    try
865 >      LoginParams.Assign(Params);
866 >      FOnLogin(Self, LoginParams);
867 >      Params.Assign (LoginParams);
868 >      aDatabaseName := FDBName;
869 >      HidePassword;
870 >    finally
871 >      LoginParams.Free;
872 >    end;
873 >  end
874 >  else
875 >  if assigned(IBGUIInterface) then
876 >  begin
877 >    IndexOfUser := IndexOfDBConst(DPBConstantNames[isc_dpb_user_name]);
878 >    if IndexOfUser <> -1 then
879 >      Username := Copy(Params[IndexOfUser],
880 >                                         Pos('=', Params[IndexOfUser]) + 1, {mbcs ok}
881 >                                         Length(Params[IndexOfUser]));
882 >    IndexOfPassword := IndexOfDBConst(DPBConstantNames[isc_dpb_password]);
883 >    if IndexOfPassword <> -1 then
884 >    begin
885 >      Password := Copy(Params[IndexOfPassword],
886 >                                         Pos('=', Params[IndexOfPassword]) + 1, {mbcs ok}
887 >                                         Length(Params[IndexOfPassword]));
888 >      OldPassword := password;
889 >    end;
890 >
891 >    result := IBGUIInterface.LoginDialogEx(aDatabaseName, Username, Password, False);
892 >    if result then
893 >    begin
894 >      if Username <> '' then
895 >      begin
896 >        if IndexOfUser = -1 then
897 >          Params.Add(DPBConstantNames[isc_dpb_user_name] + '=' + Username)
898 >        else
899 >          Params[IndexOfUser] := DPBConstantNames[isc_dpb_user_name] +
900 >                                 '=' + Username;
901 >      end
902 >      else
903 >      if IndexOfUser <> -1 then
904 >        Params.Delete(IndexOfUser);
905 >      if (Password = OldPassword) then
906 >        FHiddenPassword := ''
907 >      else
908 >      begin
909 >        FHiddenPassword := Password;
910 >        if OldPassword <> '' then
911 >          HidePassword;
912 >      end;
913 >    end;
914 >  end
915 >  else
916 >  if LoginPrompt then
917 >     IBError(ibxeNoLoginDialog,[]);
918 >  finally
919 >    FLoginCalled := false
920 >  end;
921 > end;
922 >
923 > procedure TIBDataBase.DoConnect;
924 > var
925 >  TempDBParams: TStrings;
926 >  I: integer;
927 >  aDBName: string;
928 >  Status: IStatus;
929 >  CharSetID: integer;
930 >  CharSetName: AnsiString;
931 > begin
932 >  CheckInactive;
933 >  CheckDatabaseName;
934 >  if (not LoginPrompt) and (FHiddenPassword <> '') then
935 >  begin
936 >    FHiddenPassword := '';
937 >    FDBParamsChanged := True;
938 >  end;
939 >  { Use builtin login prompt if requested }
940 >  aDBName := FDBName;
941 >  if (LoginPrompt or (csDesigning in ComponentState)) and not Login(aDBName) then
942 >    IBError(ibxeOperationCancelled, [nil]);
943 >
944 >  TempDBParams := TStringList.Create;
945 >  try
946 >   TempDBParams.Assign(FDBParams);
947 >   {$ifdef UNIX}
948 >   {See below for WINDOWS UseDefaultSystemCodePage}
949 >   if UseDefaultSystemCodePage then
950 >     TempDBParams.Values['lc_ctype'] :='UTF8';
951 >   {$endif}
952 >   {Opportunity to override defaults}
953 >   for i := 0 to FSQLObjects.Count - 1 do
954 >   begin
955 >       if FSQLObjects[i] <> nil then
956 >         SQLObjects[i].DoBeforeDatabaseConnect(TempDBParams,aDBName);
957 >   end;
958 >
959 >   repeat
960 >     { Generate a new DPB if necessary }
961 >     if (FDPB = nil) or FDBParamsChanged or (TempDBParams.Text <> FDBParams.Text) then
962 >     begin
963 >       FDBParamsChanged := False;
964 >       if (not LoginPrompt and not (csDesigning in ComponentState)) or (FHiddenPassword = '') then
965 >         FDPB := GenerateDPB(TempDBParams)
966 >       else
967 >       begin
968 >          TempDBParams.Values['password'] := FHiddenPassword;
969 >          FDPB := GenerateDPB(TempDBParams);
970 >       end;
971 >     end;
972 >
973 >     if FCreateDatabase then
974 >     begin
975 >       FCreateDatabase := false;
976 >       FAttachment := FirebirdAPI.CreateDatabase(aDBName,FDPB, false);
977 >       if assigned(FOnCreateDatabase) and (FAttachment <> nil) then
978 >         OnCreateDatabase(self);
979 >     end
980 >     else
981 >       FAttachment := FirebirdAPI.OpenDatabase(aDBName,FDPB,false);
982 >
983 >     if FAttachment = nil then
984 >     begin
985 >       Status := FirebirdAPI.GetStatus;
986 >       {$IFDEF UNIX}
987 >       if Pos(':',aDBName) = 0 then
988 >       begin
989 >           if ((Status.GetSQLCode = -901) and (Status.GetIBErrorCode = isc_random)) {Access permissions on firebird temp}
990 >              or
991 >              ((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_sys_request)) {Security DB Problem}
992 >              or
993 >              ((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_psw_attach)) {Security DB Problem}
994 >              or
995 >              ((Status.GetSQLCode = -904) and (Status.GetIBErrorCode = isc_lock_dir_access)) {Lock File Problem}
996 >              then
997 >              begin
998 >                aDBName := 'localhost:' + aDBName;
999 >                Continue;
1000 >             end
1001 >       end;
1002 >       {$ENDIF}
1003 >       if ((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_io_error)) {Database not found}
1004 >                        and CreateIfNotExists and not (csDesigning in ComponentState) then
1005 >         FCreateDatabase := true
1006 >       else
1007 >         raise EIBInterBaseError.Create(Status);
1008 >     end;
1009 >
1010 >     if UseDefaultSystemCodePage and (FAttachment <> nil) then
1011 >     {Only now can we check the codepage in use by the Attachment.
1012 >      If not that required then re-open with required LCLType.}
1013 >     begin
1014 >       {$ifdef WINDOWS}
1015 >       if Attachment.CodePage2CharSetID(GetACP,CharSetID) then
1016 >       {$else}
1017 >       if Attachment.CodePage2CharSetID(DefaultSystemCodePage,CharSetID) then
1018 >       {$endif}
1019 >       begin
1020 >         CharSetName := Attachment.GetCharsetName(CharSetID);
1021 >         if CharSetName <> AnsiUpperCase(TempDBParams.Values['lc_ctype']) then
1022 >         begin
1023 >           TempDBParams.Values['lc_ctype'] := CharSetName;
1024 >           FDBParamsChanged := True;
1025 >           FAttachment := nil;
1026 >         end
1027 >       end
1028 >     end;
1029 >
1030 >   until FAttachment <> nil;
1031 >
1032 >  finally
1033 >   TempDBParams.Free;
1034 >  end;
1035 >
1036 >  if not (csDesigning in ComponentState) then
1037 >    FDBName := aDBName; {Synchronise at run time}
1038 >  FDBSQLDialect := GetDBSQLDialect;
1039 >  ValidateClientSQLDialect;
1040 >  for i := 0 to FSQLObjects.Count - 1 do
1041 >  begin
1042 >      if FSQLObjects[i] <> nil then
1043 >        SQLObjects[i].DoAfterDatabaseConnect;
1044 >  end;
1045 >  if not (csDesigning in ComponentState) then
1046 >    MonitorHook.DBConnect(Self);
1047 > end;
1048 >
1049 > procedure TIBDataBase.RemoveSQLObject(Idx: Integer);
1050 > var
1051 >  ds: TIBBase;
1052 > begin
1053 >  if (Idx >= 0) and (FSQLObjects[Idx] <> nil) then
1054 >  begin
1055 >    ds := SQLObjects[Idx];
1056 >    FSQLObjects[Idx] := nil;
1057 >    ds.Database := nil;
1058 >    if (ds.owner is TDataSet) then
1059 >      FDataSets.Remove(TDataSet(ds.Owner));
1060 >  end;
1061 > end;
1062 >
1063 > procedure TIBDataBase.RemoveSQLObjects;
1064 > var
1065 >  i: Integer;
1066 > begin
1067 >  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1068 >  begin
1069 >    RemoveSQLObject(i);
1070 >    if (TIBBase(FSQLObjects[i]).owner is TDataSet) then
1071 >      FDataSets.Remove(TDataSet(TIBBase(FSQLObjects[i]).owner));
1072 >  end;
1073 > end;
1074 >
1075 > procedure TIBDataBase.RemoveTransaction(Idx: Integer);
1076 > var
1077 >  TR: TIBTransaction;
1078 > begin
1079 >  if ((Idx >= 0) and (FTransactions[Idx] <> nil)) then
1080 >  begin
1081 >    TR := Transactions[Idx];
1082 >    FTransactions[Idx] := nil;
1083 >    TR.RemoveDatabase(TR.FindDatabase(Self));
1084 >    if TR = FDefaultTransaction then
1085 >      FDefaultTransaction := nil;
1086 >  end;
1087 > end;
1088 >
1089 > procedure TIBDataBase.RemoveTransactions;
1090 > var
1091 >  i: Integer;
1092 > begin
1093 >  for i := 0 to FTransactions.Count - 1 do if FTransactions[i] <> nil then
1094 >    RemoveTransaction(i);
1095 > end;
1096 >
1097 > procedure TIBDataBase.SetDatabaseName( const Value: TIBFileName);
1098 > begin
1099 >  if FDBName <> Value then
1100 >  begin
1101 >    EnsureInactive;
1102 >    CheckInactive;
1103 >    FDBName := Value;
1104 >  end;
1105 > end;
1106 >
1107 > procedure TIBDataBase.SetDBParamByDPB( const Idx: Integer; Value: String);
1108 > var
1109 >  ConstIdx: Integer;
1110 > begin
1111 >  ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
1112 >  if (Value = '') then
1113 >  begin
1114 >    if ConstIdx <> -1 then
1115 >      Params.Delete(ConstIdx);
1116 >  end
1117 >  else
1118 >  begin
1119 >    if (ConstIdx = -1) then
1120 >      Params.Add(DPBConstantNames[Idx] + '=' + Value)
1121 >    else
1122 >      Params[ConstIdx] := DPBConstantNames[Idx] + '=' + Value;
1123 >  end;
1124 > end;
1125 >
1126 > procedure TIBDataBase.SetDBParams(Value: TStrings);
1127 > begin
1128 >  FDBParams.Assign(Value);
1129 > end;
1130 >
1131 > procedure TIBDataBase.SetDefaultTransaction(Value: TIBTransaction);
1132 > var
1133 >  i: Integer;
1134 > begin
1135 >  if (FDefaultTransaction <> nil) and (FDefaultTransaction <> Value) then
1136 >  begin
1137 >    i := FindTransaction(FDefaultTransaction);
1138 >    if (i <> -1) and (FDefaultTransaction.DefaultDatabase <> self) then
1139 >      RemoveTransaction(i);
1140 >  end;
1141 >  if (Value <> nil) and (FDefaultTransaction <> Value) then
1142 >  begin
1143 >    Value.AddDatabase(Self);
1144 >    AddTransaction(Value);
1145 >  end;
1146 >  FDefaultTransaction := Value;
1147 > end;
1148 >
1149 > procedure TIBDataBase.SetIdleTimer(Value: Integer);
1150 > begin
1151 >  if Value < 0 then
1152 >    IBError(ibxeTimeoutNegative, [nil])
1153 >  else
1154 >    if (Value = 0) then
1155 >    begin
1156 >      FTimer.Enabled := False;
1157 >      FTimer.Interval := 0;
1158 >    end
1159 >    else
1160 >      if (Value > 0) then
1161 >      begin
1162 >        FTimer.Interval := Value;
1163 >        if not (csDesigning in ComponentState) then
1164 >          FTimer.Enabled := True;
1165 >      end;
1166 > end;
1167 >
1168 > function TIBDataBase.TestConnected: Boolean;
1169 > var
1170 >  DatabaseInfo: TIBDatabaseInfo;
1171 > begin
1172 >  result := Connected;
1173 >  if result then
1174 >  begin
1175 >    DatabaseInfo := TIBDatabaseInfo.Create(self);
1176 >    try
1177 >      DatabaseInfo.Database := self;
1178 >      { poke the server to see if connected }
1179 >      if DatabaseInfo.BaseLevel = 0 then ;
1180 >      DatabaseInfo.Free;
1181 >    except
1182 >      ForceClose;
1183 >      result := False;
1184 >      DatabaseInfo.Free;
1185 >    end;
1186 >  end;
1187 > end;
1188 >
1189 > procedure TIBDataBase.TimeoutConnection(Sender: TObject);
1190 > begin
1191 >  if Connected then
1192 >  begin
1193 >    if not FAttachment.HasActivity then
1194 >    begin
1195 >      ForceClose;
1196 >      if Assigned(FOnIdleTimer) then
1197 >        FOnIdleTimer(Self);
1198 >    end
1199 >  end;
1200 > end;
1201 >
1202 > function TIBDataBase.GetIsReadOnly: Boolean;
1203 > var
1204 >  DatabaseInfo: TIBDatabaseInfo;
1205 > begin
1206 >  DatabaseInfo := TIBDatabaseInfo.Create(self);
1207 >  DatabaseInfo.Database := self;
1208 >  if (DatabaseInfo.ODSMajorVersion < 10) then
1209 >    result := false
1210 >  else
1211 >  begin
1212 >    if (DatabaseInfo.ReadOnly = 0) then
1213 >      result := false
1214 >    else
1215 >      result := true;
1216 >  end;
1217 >  DatabaseInfo.Free;
1218 > end;
1219 >
1220 > function TIBDataBase.GetSQLDialect: Integer;
1221 > begin
1222 >  Result := FSQLDialect;
1223 > end;
1224 >
1225 >
1226 > procedure TIBDataBase.SetSQLDialect( const Value: Integer);
1227 > begin
1228 >  if (Value < 1) then IBError(ibxeSQLDialectInvalid, [nil]);
1229 >  if ((FAttachment = nil) or (Value <= FDBSQLDialect))  then
1230 >    FSQLDialect := Value
1231 >  else
1232 >    IBError(ibxeSQLDialectInvalid, [nil]);
1233 > end;
1234 >
1235 > function TIBDataBase.GetDBSQLDialect: Integer;
1236 > var
1237 >  DatabaseInfo: TIBDatabaseInfo;
1238 > begin
1239 >  DatabaseInfo := TIBDatabaseInfo.Create(self);
1240 >  DatabaseInfo.Database := self;
1241 >  result := DatabaseInfo.DBSQLDialect;
1242 >  DatabaseInfo.Free;
1243 > end;
1244 >
1245 > function TIBDataBase.GetDefaultCharSetID: integer;
1246 > begin
1247 >  if (Attachment <> nil) and Attachment.HasDefaultCharSet then
1248 >    Result := Attachment.GetDefaultCharSetID
1249 >  else
1250 >    Result := 0;
1251 > end;
1252 >
1253 > function TIBDataBase.GetDefaultCharSetName: AnsiString;
1254 > begin
1255 >  if Attachment <> nil then
1256 >    Result := Attachment.GetCharsetName(DefaultCharSetID)
1257 >  else
1258 >    Result := '';
1259 > end;
1260 >
1261 > function TIBDataBase.GetDefaultCodePage: TSystemCodePage;
1262 > begin
1263 >  if Attachment <> nil then
1264 >    Attachment.CharSetID2CodePage(DefaultCharSetID,Result)
1265 >  else
1266 >    Result := CP_NONE;
1267 > end;
1268 >
1269 > procedure TIBDataBase.ValidateClientSQLDialect;
1270 > begin
1271 >  if (FDBSQLDialect < FSQLDialect) then
1272 >  begin
1273 >    FSQLDialect := FDBSQLDialect;
1274 >    if Assigned (FOnDialectDowngradeWarning) then
1275 >      FOnDialectDowngradeWarning(self);
1276 >  end;
1277 > end;
1278 >
1279 > procedure TIBDataBase.ApplyUpdates( const DataSets: array of TDataSet);
1280 > var
1281 >  I: Integer;
1282 >  DS: TIBCustomDataSet;
1283 >  TR: TIBTransaction;
1284 > begin
1285 >  TR := nil;
1286 >  for I := 0 to High(DataSets) do
1287 >  begin
1288 >    DS := TIBCustomDataSet(DataSets[I]);
1289 >    if DS.Database <> Self then
1290 >      IBError(ibxeUpdateWrongDB, [nil]);
1291 >    if TR = nil then
1292 >      TR := DS.Transaction;
1293 >    if (DS.Transaction <> TR) or (TR = nil) then
1294 >      IBError(ibxeUpdateWrongTR, [nil]);
1295 >  end;
1296 >  TR.CheckInTransaction;
1297 >  for I := 0 to High(DataSets) do
1298 >  begin
1299 >    DS := TIBCustomDataSet(DataSets[I]);
1300 >    DS.ApplyUpdates;
1301 >  end;
1302 >  TR.CommitRetaining;
1303 > end;
1304 >
1305 > procedure TIBDataBase.CloseDataSets;
1306 > var
1307 >  i: Integer;
1308 > begin
1309 >  for i := 0 to DataSetCount - 1 do
1310 >    if (DataSets[i] <> nil) then
1311 >      DataSets[i].close;
1312 > end;
1313 >
1314 > function TIBDataBase.GetDataset(Index: longint): TDataset;
1315 > begin
1316 >  if (Index >= 0) and (Index < FDataSets.Count) then
1317 >    Result := TDataSet(FDataSets[Index])
1318 >  else
1319 >    raise Exception.Create('Invalid Index to DataSets');
1320 > end;
1321 >
1322 > function TIBDataBase.GetDataSetCount: Longint;
1323 > begin
1324 >  Result := FDataSets.Count;
1325 > end;
1326 >
1327 > procedure TIBDataBase.ReadState(Reader: TReader);
1328 > begin
1329 >  FDBParams.Clear;
1330 >  inherited ReadState(Reader);
1331 > end;
1332 >
1333 > procedure TIBDataBase.SetConnected(Value: boolean);
1334 > begin
1335 >  if StreamedConnected and not AllowStreamedConnected then
1336 >  begin
1337 >    StreamedConnected := false;
1338 >    Value := false
1339 >  end;
1340 >  inherited SetConnected(Value);
1341 > end;
1342 >
1343 > procedure TIBDataBase.GetFieldNames( const TableName: string; List: TStrings);
1344 > var
1345 >  Query: TIBSQL;
1346 > begin
1347 >  if TableName = '' then
1348 >    IBError(ibxeNoTableName, [nil]);
1349 >  if not Connected then
1350 >    Open;
1351 >  if not FInternalTransaction.Active then
1352 >    FInternalTransaction.StartTransaction;
1353 >  Query := TIBSQL.Create(self);
1354 >  try
1355 >    Query.GoToFirstRecordOnExecute := False;
1356 >    Query.Database := Self;
1357 >    Query.Transaction := FInternalTransaction;
1358 >    Query.SQL.Text := 'Select R.RDB$FIELD_NAME ' + {do not localize}
1359 >      'from RDB$RELATION_FIELDS R ' + {do not localize}
1360 >      'where R.RDB$RELATION_NAME = ' + {do not localize}
1361 >      '''' + ExtractIdentifier(SQLDialect, TableName) +
1362 >      ''' and Exists(Select * From RDB$FIELDS F Where R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME)' ; {do not localize}
1363 >    Query.Prepare;
1364 >    Query.ExecQuery;
1365 >    with List do
1366 >    begin
1367 >      BeginUpdate;
1368 >      try
1369 >        Clear;
1370 >        while (not Query.EOF) and Query.Next  do
1371 >          List.Add(TrimRight(Query.FieldByName('RDB$FIELD_NAME').AsString)); {do not localize}
1372 >      finally
1373 >        EndUpdate;
1374 >      end;
1375 >    end;
1376 >  finally
1377 >    Query.free;
1378 >    FInternalTransaction.Commit;
1379 >  end;
1380 > end;
1381 >
1382 > procedure TIBDataBase.GetTableNames(List: TStrings; SystemTables: Boolean);
1383 > var
1384 >  Query : TIBSQL;
1385 > begin
1386 >  if not (csReading in ComponentState) then
1387 >  begin
1388 >    if not Connected then
1389 >      Open;
1390 >    if not FInternalTransaction.Active then
1391 >      FInternalTransaction.StartTransaction;
1392 >    Query := TIBSQL.Create(self);
1393 >    try
1394 >      Query.GoToFirstRecordOnExecute := False;
1395 >      Query.Database := Self;
1396 >      Query.Transaction := FInternalTransaction;
1397 >      if SystemTables then
1398 >        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1399 >                          ' where RDB$VIEW_BLR is NULL' {do not localize}
1400 >      else
1401 >        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1402 >                          ' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
1403 >      Query.Prepare;
1404 >      Query.ExecQuery;
1405 >      with List do
1406 >      begin
1407 >        BeginUpdate;
1408 >        try
1409 >          Clear;
1410 >          while (not Query.EOF) and Query.Next  do
1411 >            List.Add(TrimRight(Query.Fields[0].AsString));
1412 >        finally
1413 >          EndUpdate;
1414 >        end;
1415 >      end;
1416 >    finally
1417 >      Query.Free;
1418 >      FInternalTransaction.Commit;
1419 >    end;
1420 >  end;
1421 > end;
1422 >
1423 > { TIBTransaction }
1424 >
1425 > constructor TIBTransaction.Create(AOwner: TComponent);
1426 > begin
1427 >  inherited Create(AOwner);
1428 >  FDatabases := TList.Create;
1429 >  FSQLObjects := TList.Create;
1430 >  FTPB := nil;
1431 >  FTRParams := TStringList.Create;
1432 >  FTRParamsChanged := True;
1433 >  TStringList(FTRParams).OnChange := TRParamsChange;
1434 >  TStringList(FTRParams).OnChanging := TRParamsChanging;
1435 >  FTimer := TFPTimer.Create(Self);
1436 >  FTimer.Enabled := False;
1437 >  FTimer.Interval := 0;
1438 >  FTimer.OnTimer := TimeoutTransaction;
1439 >  FDefaultAction := taCommit;
1440 > end;
1441 >
1442 > destructor TIBTransaction.Destroy;
1443 > var
1444 >  i: Integer;
1445 > begin
1446 >  if InTransaction then
1447 >    EndTransaction(FDefaultAction, True);
1448 >  for i := 0 to FSQLObjects.Count - 1 do
1449 >    if FSQLObjects[i] <> nil then
1450 >      SQLObjects[i].DoTransactionFree;
1451 >  RemoveSQLObjects;
1452 >  RemoveDatabases;
1453 >  FTPB := nil;
1454 >  FTRParams.Free;
1455 >  FSQLObjects.Free;
1456 >  FDatabases.Free;
1457 >  inherited Destroy;
1458 > end;
1459 >
1460 > procedure TIBTransaction.CheckDatabasesInList;
1461 > begin
1462 >  if GetDatabaseCount = 0 then
1463 >    IBError(ibxeNoDatabasesInTransaction, [nil]);
1464 > end;
1465 >
1466 > procedure TIBTransaction.CheckInTransaction;
1467 > begin
1468 >  if FStreamedActive and (not InTransaction) then
1469 >    Loaded;
1470 >  if (TransactionIntf = nil) then
1471 >    IBError(ibxeNotInTransaction, [nil]);
1472 > end;
1473 >
1474 > procedure TIBTransaction.DoBeforeTransactionEnd;
1475 > begin
1476 >  if Assigned(FBeforeTransactionEnd) then
1477 >    FBeforeTransactionEnd(self);
1478 > end;
1479 >
1480 > procedure TIBTransaction.DoAfterTransactionEnd;
1481 > begin
1482 >  if Assigned(FAfterTransactionEnd) then
1483 >    FAfterTransactionEnd(self);
1484 > end;
1485 >
1486 > procedure TIBTransaction.DoOnStartTransaction;
1487 > begin
1488 >  if assigned(FOnStartTransaction) then
1489 >    OnStartTransaction(self);
1490 > end;
1491 >
1492 > procedure TIBTransaction.DoAfterExecQuery(Sender: TObject);
1493 > begin
1494 >  if assigned(FAfterExecQuery) then
1495 >    AfterExecQuery(Sender);
1496 > end;
1497 >
1498 > procedure TIBTransaction.DoAfterEdit(Sender: TObject);
1499 > begin
1500 >  if assigned(FAfterEdit) then
1501 >    AfterEdit(Sender);
1502 > end;
1503 >
1504 > procedure TIBTransaction.DoAfterDelete(Sender: TObject);
1505 > begin
1506 >  if assigned(FAfterDelete) then
1507 >    AfterDelete(Sender);
1508 > end;
1509 >
1510 > procedure TIBTransaction.DoAfterInsert(Sender: TObject);
1511 > begin
1512 >  if assigned(FAfterInsert) then
1513 >    AfterInsert(Sender);
1514 > end;
1515 >
1516 > procedure TIBTransaction.DoAfterPost(Sender: TObject);
1517 > begin
1518 >  if assigned(FAfterPost) then
1519 >    AfterPost(Sender);
1520 > end;
1521 >
1522 > procedure TIBTransaction.EnsureNotInTransaction;
1523 > begin
1524 >  if csDesigning in ComponentState then
1525 >  begin
1526 >    if TransactionIntf <> nil then
1527 >      Rollback;
1528 >  end;
1529 > end;
1530 >
1531 > procedure TIBTransaction.CheckNotInTransaction;
1532 > begin
1533 >  if (TransactionIntf <> nil) and  TransactionIntf.InTransaction then
1534 >    IBError(ibxeInTransaction, [nil]);
1535 > end;
1536 >
1537 > function TIBTransaction.AddDatabase(db: TIBDatabase): Integer;
1538 > var
1539 >  i: Integer;
1540 >  NilFound: Boolean;
1541 > begin
1542 >  EnsureNotInTransaction;
1543 >  CheckNotInTransaction;
1544 >  FTransactionIntf := nil;
1545 >
1546 >  i := FindDatabase(db);
1547 >  if i <> -1 then
1548 >  begin
1549 >    result := i;
1550 >    exit;
1551 >  end;
1552 >  NilFound := False;
1553 >  i := 0;
1554 >  while (not NilFound) and (i < FDatabases.Count) do
1555 >  begin
1556 >    NilFound := (FDatabases[i] = nil);
1557 >    if (not NilFound) then
1558 >      Inc(i);
1559 >  end;
1560 >  if (NilFound) then
1561 >  begin
1562 >    FDatabases[i] := db;
1563 >    result := i;
1564 >  end
1565 >  else
1566 >  begin
1567 >    result := FDatabases.Count;
1568 >    FDatabases.Add(db);
1569 >  end;
1570 > end;
1571 >
1572 > function TIBTransaction.AddSQLObject(ds: TIBBase): Integer;
1573 > begin
1574 >  result := 0;
1575 >  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
1576 >    Inc(result);
1577 >  if (result = FSQLObjects.Count) then
1578 >    FSQLObjects.Add(ds)
1579 >  else
1580 >    FSQLObjects[result] := ds;
1581 > end;
1582 >
1583 > procedure TIBTransaction.Commit;
1584 > begin
1585 >  EndTransaction(TACommit, False);
1586 > end;
1587 >
1588 > procedure TIBTransaction.CommitRetaining;
1589 > begin
1590 >  EndTransaction(TACommitRetaining, False);
1591 > end;
1592 >
1593 > procedure TIBTransaction.EndTransaction(Action: TTransactionAction;
1594 >  Force: Boolean);
1595 > var
1596 >  i: Integer;
1597 > begin
1598 >  CheckInTransaction;
1599 >  if FInEndTransaction then Exit;
1600 >  FInEndTransaction := true;
1601 >  FEndAction := Action;
1602 >  try
1603 >  case Action of
1604 >    TARollback, TACommit:
1605 >    begin
1606 >      try
1607 >        DoBeforeTransactionEnd;
1608 >      except on E: EIBInterBaseError do
1609 >        begin
1610 >          if not Force then
1611 >            raise;
1612 >        end;
1613 >      end;
1614 >
1615 >      for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1616 >      try
1617 >        SQLObjects[i].DoBeforeTransactionEnd(Action);
1618 >      except on E: EIBInterBaseError do
1619 >        begin
1620 >          if not Force then
1621 >              raise;
1622 >          end;
1623 >      end;
1624 >
1625 >      if InTransaction then
1626 >      begin
1627 >        if (Action = TARollback) then
1628 >            FTransactionIntf.Rollback(Force)
1629 >        else
1630 >        try
1631 >          FTransactionIntf.Commit;
1632 >        except on E: EIBInterBaseError do
1633 >          begin
1634 >            if Force then
1635 >              FTransactionIntf.Rollback(Force)
1636 >            else
1637 >              raise;
1638 >          end;
1639 >        end;
1640 >
1641 >          for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1642 >          try
1643 >            SQLObjects[i].DoAfterTransactionEnd;
1644 >          except on E: EIBInterBaseError do
1645 >            begin
1646 >              if not Force then
1647 >                raise;
1648 >            end;
1649 >          end;
1650 >        try
1651 >          DoAfterTransactionEnd;
1652 >        except on E: EIBInterBaseError do
1653 >          begin
1654 >            if not Force then
1655 >              raise;
1656 >          end;
1657 >        end;
1658 >      end;
1659 >    end;
1660 >    TACommitRetaining:
1661 >      FTransactionIntf.CommitRetaining;
1662 >
1663 >    TARollbackRetaining:
1664 >      FTransactionIntf.RollbackRetaining;
1665 >  end;
1666 >  if not (csDesigning in ComponentState) then
1667 >  begin
1668 >    case Action of
1669 >      TACommit:
1670 >        MonitorHook.TRCommit(Self);
1671 >      TARollback:
1672 >        MonitorHook.TRRollback(Self);
1673 >      TACommitRetaining:
1674 >        MonitorHook.TRCommitRetaining(Self);
1675 >      TARollbackRetaining:
1676 >        MonitorHook.TRRollbackRetaining(Self);
1677 >    end;
1678 >  end;
1679 >  finally
1680 >    FInEndTransaction := false
1681 >  end;
1682 > end;
1683 >
1684 > function TIBTransaction.GetDatabase(Index: Integer): TIBDatabase;
1685 > begin
1686 >  result := FDatabases[Index];
1687 > end;
1688 >
1689 > function TIBTransaction.GetDatabaseCount: Integer;
1690 > var
1691 >  i, Cnt: Integer;
1692 > begin
1693 >  result := 0;
1694 >  Cnt := FDatabases.Count - 1;
1695 >  for i := 0 to Cnt do if FDatabases[i] <> nil then
1696 >    Inc(result);
1697 > end;
1698 >
1699 > function TIBTransaction.GetSQLObject(Index: Integer): TIBBase;
1700 > begin
1701 >  result := FSQLObjects[Index];
1702 > end;
1703 >
1704 > function TIBTransaction.GetSQLObjectCount: Integer;
1705 > var
1706 >  i, Cnt: Integer;
1707 > begin
1708 >  result := 0;
1709 >  Cnt := FSQLObjects.Count - 1;
1710 >  for i := 0 to Cnt do if FSQLObjects[i] <> nil then
1711 >    Inc(result);
1712 > end;
1713 >
1714 > function TIBTransaction.GetInTransaction: Boolean;
1715 > begin
1716 >  result := (TransactionIntf <> nil) and TransactionIntf.InTransaction;
1717 > end;
1718 >
1719 > function TIBTransaction.FindDatabase(db: TIBDatabase): Integer;
1720 > var
1721 >  i: Integer;
1722 > begin
1723 >  result := -1;
1724 >  for i := 0 to FDatabases.Count - 1 do
1725 >    if db = TIBDatabase(FDatabases[i]) then
1726 >    begin
1727 >      result := i;
1728 >      break;
1729 >    end;
1730 > end;
1731 >
1732 > function TIBTransaction.FindDefaultDatabase: TIBDatabase;
1733 > var
1734 >  i: Integer;
1735 > begin
1736 >  result := FDefaultDatabase;
1737 >  if result = nil then
1738 >  begin
1739 >    for i := 0 to FDatabases.Count - 1 do
1740 >      if (TIBDatabase(FDatabases[i]) <> nil) and
1741 >        (TIBDatabase(FDatabases[i]).DefaultTransaction = self) then
1742 >      begin
1743 >        result := TIBDatabase(FDatabases[i]);
1744 >        break;
1745 >      end;
1746 >  end;
1747 > end;
1748 >
1749 > function TIBTransaction.GetEndAction: TTransactionAction;
1750 > begin
1751 >  if FInEndTransaction then
1752 >     Result := FEndAction
1753 >  else
1754 >     IBError(ibxeIB60feature, [nil])
1755 > end;
1756 >
1757 >
1758 > function TIBTransaction.GetIdleTimer: Integer;
1759 > begin
1760 >  result := FTimer.Interval;
1761 > end;
1762 >
1763 > procedure TIBTransaction.Loaded;
1764 > begin
1765 >  inherited Loaded;
1766 > end;
1767 >
1768 > procedure TIBTransaction.BeforeDatabaseDisconnect(DB: TIBDatabase);
1769 > begin
1770 >  if InTransaction then
1771 >    EndTransaction(FDefaultAction, True);
1772 >  FTransactionIntf := nil;
1773 > end;
1774 >
1775 > procedure TIBTransaction.RemoveDatabase(Idx: Integer);
1776 > var
1777 >  DB: TIBDatabase;
1778 > begin
1779 >  if ((Idx >= 0) and (FDatabases[Idx] <> nil)) then
1780 >  begin
1781 >    EnsureNotInTransaction;
1782 >    CheckNotInTransaction;
1783 >    FTransactionIntf := nil;
1784 >
1785 >    DB := Databases[Idx];
1786 >    FDatabases[Idx] := nil;
1787 >    DB.RemoveTransaction(DB.FindTransaction(Self));
1788 >    if DB = FDefaultDatabase then
1789 >      FDefaultDatabase := nil;
1790 >  end;
1791 > end;
1792 >
1793 > procedure TIBTransaction.RemoveDatabases;
1794 > var
1795 >  i: Integer;
1796 > begin
1797 >  EnsureNotInTransaction;
1798 >  CheckNotInTransaction;
1799 >  FTransactionIntf := nil;
1800 >
1801 >  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1802 >    RemoveDatabase(i);
1803 > end;
1804 >
1805 > procedure TIBTransaction.RemoveSQLObject(Idx: Integer);
1806 > var
1807 >  ds: TIBBase;
1808 > begin
1809 >  if ((Idx >= 0) and (FSQLObjects[Idx] <> nil)) then
1810 >  begin
1811 >    ds := SQLObjects[Idx];
1812 >    FSQLObjects[Idx] := nil;
1813 >    ds.Transaction := nil;
1814 >  end;
1815 > end;
1816 >
1817 > procedure TIBTransaction.RemoveSQLObjects;
1818 > var
1819 >  i: Integer;
1820 > begin
1821 >  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1822 >    RemoveSQLObject(i);
1823 > end;
1824 >
1825 > procedure TIBTransaction.Rollback;
1826 > begin
1827 >  EndTransaction(TARollback, False);
1828 > end;
1829 >
1830 > procedure TIBTransaction.RollbackRetaining;
1831 > begin
1832 >  EndTransaction(TARollbackRetaining, False);
1833 > end;
1834 >
1835 > procedure TIBTransaction.SetActive(Value: Boolean);
1836 > begin
1837 >  if csReading in ComponentState then
1838 >    FStreamedActive := Value
1839 >  else
1840 >    if Value and not InTransaction then
1841 >      StartTransaction
1842 >    else
1843 >      if not Value and InTransaction then
1844 >        Rollback;
1845 > end;
1846 >
1847 > procedure TIBTransaction.SetDefaultDatabase(Value: TIBDatabase);
1848 > var
1849 >  i: integer;
1850 > begin
1851 >  if (FDefaultDatabase <> nil) and (FDefaultDatabase <> Value) then
1852 >  begin
1853 >    i := FDefaultDatabase.FindTransaction(self);
1854 >    if (i <> -1) then
1855 >      FDefaultDatabase.RemoveTransaction(i);
1856 >  end;
1857 >  if (Value <> nil) and (FDefaultDatabase <> Value) then
1858 >  begin
1859 >    Value.AddTransaction(Self);
1860 >    AddDatabase(Value);
1861 >    for i := 0 to FSQLObjects.Count - 1 do
1862 >      if (FSQLObjects[i] <> nil) and
1863 >         (TIBBase(FSQLObjects[i]).Database = nil) then
1864 >         SetObjectProp(TIBBase(FSQLObjects[i]).Owner, 'Database', Value);
1865 >  end;
1866 >  FDefaultDatabase := Value;
1867 > end;
1868 >
1869 > procedure TIBTransaction.Notification( AComponent: TComponent;
1870 >                                        Operation: TOperation);
1871 > var
1872 >  i: Integer;
1873 > begin
1874 >  inherited Notification( AComponent, Operation);
1875 >  if (Operation = opRemove) and (AComponent = FDefaultDatabase) then
1876 >  begin
1877 >    i := FindDatabase(FDefaultDatabase);
1878 >    if (i <> -1) then
1879 >      RemoveDatabase(i);
1880 >    FDefaultDatabase := nil;
1881 >  end;
1882 > end;
1883 >
1884 > procedure TIBTransaction.SetIdleTimer(Value: Integer);
1885 > begin
1886 >  if Value < 0 then
1887 >    IBError(ibxeTimeoutNegative, [nil])
1888 >  else
1889 >    if (Value = 0) then
1890 >    begin
1891 >      FTimer.Enabled := False;
1892 >      FTimer.Interval := 0;
1893 >    end
1894 >    else
1895 >      if (Value > 0) then
1896 >      begin
1897 >        FTimer.Interval := Value;
1898 >        if not (csDesigning in ComponentState) then
1899 >          FTimer.Enabled := True;
1900 >      end;
1901 > end;
1902 >
1903 > procedure TIBTransaction.SetTRParams(Value: TStrings);
1904 > begin
1905 >  FTRParams.Assign(Value);
1906 > end;
1907 >
1908 > procedure TIBTransaction.StartTransaction;
1909 > var
1910 >  i: Integer;
1911 >  Attachments: array of IAttachment;
1912 >  ValidDatabaseCount: integer;
1913 > begin
1914 >  CheckNotInTransaction;
1915 >  CheckDatabasesInList;
1916 >  if TransactionIntf <> nil then
1917 >  begin
1918 >    TransactionIntf.Start(DefaultAction);
1919 >    Exit;
1920 >  end;
1921 >
1922 >  for i := 0 to FDatabases.Count - 1 do
1923 >   if  FDatabases[i] <> nil then
1924 >   begin
1925 >     with TIBDatabase(FDatabases[i]) do
1926 >     if not Connected then
1927 >       if StreamedConnected then
1928 >       begin
1929 >         Open;
1930 >         StreamedConnected := False;
1931 >       end
1932 >       else
1933 >         IBError(ibxeDatabaseClosed, [nil]);
1934 >   end;
1935 >  if FTRParamsChanged then
1936 >  begin
1937 >    FTRParamsChanged := False;
1938 >    FTPB :=  GenerateTPB(FTRParams);
1939 >  end;
1940 >
1941 >  ValidDatabaseCount := 0;
1942 >  for i := 0 to DatabaseCount - 1 do
1943 >    if Databases[i] <> nil then Inc(ValidDatabaseCount);
1944 >
1945 >  if ValidDatabaseCount = 1 then
1946 >    FTransactionIntf := Databases[0].Attachment.StartTransaction(FTPB,DefaultAction)
1947 >  else
1948 >  begin
1949 >    SetLength(Attachments,ValidDatabaseCount);
1950 >    for i := 0 to DatabaseCount - 1 do
1951 >      if Databases[i] <> nil then
1952 >        Attachments[i] := Databases[i].Attachment;
1953 >
1954 >    FTransactionIntf := FirebirdAPI.StartTransaction(Attachments,FTPB,DefaultAction);
1955 >  end;
1956 >
1957 >  if not (csDesigning in ComponentState) then
1958 >      MonitorHook.TRStart(Self);
1959 >  DoOnStartTransaction;
1960 > end;
1961 >
1962 > procedure TIBTransaction.TimeoutTransaction(Sender: TObject);
1963 > begin
1964 >  if InTransaction then
1965 >  begin
1966 >    if not TransactionIntf.HasActivity then
1967 >    begin
1968 >      EndTransaction(FDefaultAction, True);
1969 >      if Assigned(FOnIdleTimer) then
1970 >        FOnIdleTimer(Self);
1971 >    end
1972 >  end;
1973 > end;
1974 >
1975 > procedure TIBTransaction.TRParamsChange(Sender: TObject);
1976 > begin
1977 >  FTRParamsChanged := True;
1978 > end;
1979 >
1980 > procedure TIBTransaction.TRParamsChanging(Sender: TObject);
1981 > begin
1982 >  EnsureNotInTransaction;
1983 >  CheckNotInTransaction;
1984 >  FTransactionIntf := nil;
1985 > end;
1986 >
1987 > { TIBBase }
1988 > constructor TIBBase.Create(AOwner: TObject);
1989 > begin
1990 >  FOwner := AOwner;
1991 > end;
1992 >
1993 > destructor TIBBase.Destroy;
1994 > begin
1995 >  SetDatabase(nil);
1996 >  SetTransaction(nil);
1997 >  inherited Destroy;
1998 > end;
1999 >
2000 > procedure TIBBase.HandleException(Sender: TObject);
2001 > begin
2002 >  if assigned(Database) then
2003 >     Database.HandleException(Sender)
2004 >  else
2005 >     SysUtils.ShowException(ExceptObject,ExceptAddr);
2006 > end;
2007 >
2008 > procedure TIBBase.SetCursor;
2009 > begin
2010 >  if Assigned(Database) and not Database.SQLHourGlass then
2011 >     Exit;
2012 >  if assigned(IBGUIInterface) then
2013 >     IBGUIInterface.SetCursor;
2014 > end;
2015 >
2016 > procedure TIBBase.RestoreCursor;
2017 > begin
2018 >  if Assigned(Database) and not Database.SQLHourGlass then
2019 >     Exit;
2020 >  if assigned(IBGUIInterface) then
2021 >     IBGUIInterface.RestoreCursor;
2022 > end;
2023 >
2024 > procedure TIBBase.CheckDatabase;
2025 > begin
2026 >  if (FDatabase = nil) then
2027 >    IBError(ibxeDatabaseNotAssigned, [nil]);
2028 >  FDatabase.CheckActive;
2029 > end;
2030 >
2031 > procedure TIBBase.CheckTransaction;
2032 > begin
2033 >  if FTransaction = nil then
2034 >    IBError(ibxeTransactionNotAssigned, [nil]);
2035 >  FTransaction.CheckInTransaction;
2036 > end;
2037 >
2038 > procedure TIBBase.DoBeforeDatabaseConnect(DBParams: TStrings; var DBName: string
2039 >  );
2040 > begin
2041 >  if assigned(FBeforeDatabaseConnect) then
2042 >    BeforeDatabaseConnect(self,DBParams,DBName);
2043 > end;
2044 >
2045 > procedure TIBBase.DoAfterDatabaseConnect;
2046 > begin
2047 >  if assigned(FAfterDatabaseConnect) then
2048 >    AfterDatabaseConnect(self);
2049 > end;
2050 >
2051 > procedure TIBBase.DoBeforeDatabaseDisconnect;
2052 > begin
2053 >  if Assigned(BeforeDatabaseDisconnect) then
2054 >    BeforeDatabaseDisconnect(Self);
2055 > end;
2056 >
2057 > procedure TIBBase.DoAfterDatabaseDisconnect;
2058 > begin
2059 >  if Assigned(AfterDatabaseDisconnect) then
2060 >    AfterDatabaseDisconnect(Self);
2061 > end;
2062 >
2063 > procedure TIBBase.DoDatabaseFree;
2064 > begin
2065 >  if Assigned(OnDatabaseFree) then
2066 >    OnDatabaseFree(Self);
2067 >  SetDatabase(nil);
2068 >  SetTransaction(nil);
2069 > end;
2070 >
2071 > procedure TIBBase.DoBeforeTransactionEnd(Action: TTransactionAction);
2072 > begin
2073 >  if Assigned(BeforeTransactionEnd) then
2074 >    BeforeTransactionEnd(Self,Action);
2075 > end;
2076 >
2077 > procedure TIBBase.DoAfterTransactionEnd;
2078 > begin
2079 >  if Assigned(AfterTransactionEnd) then
2080 >    AfterTransactionEnd(Self);
2081 > end;
2082 >
2083 > procedure TIBBase.DoTransactionFree;
2084 > begin
2085 >  if Assigned(OnTransactionFree) then
2086 >    OnTransactionFree(Self);
2087 >  FTransaction := nil;
2088 > end;
2089 >
2090 > procedure TIBBase.DoAfterExecQuery(Sender: TObject);
2091 > begin
2092 >  if FTransaction <> nil then
2093 >    FTransaction.DoAfterExecQuery(Sender);
2094 > end;
2095 >
2096 > procedure TIBBase.DoAfterEdit(Sender: TObject);
2097 > begin
2098 >  if FTransaction <> nil then
2099 >    FTransaction.DoAfterEdit(Sender);
2100 > end;
2101 >
2102 > procedure TIBBase.DoAfterDelete(Sender: TObject);
2103 > begin
2104 >  if FTransaction <> nil then
2105 >    FTransaction.DoAfterDelete(Sender);
2106 > end;
2107 >
2108 > procedure TIBBase.DoAfterInsert(Sender: TObject);
2109 > begin
2110 >  if FTransaction <> nil then
2111 >    FTransaction.DoAfterInsert(Sender);
2112 > end;
2113 >
2114 > procedure TIBBase.DoAfterPost(Sender: TObject);
2115 > begin
2116 >  if FTransaction <> nil then
2117 >    FTransaction.DoAfterPost(Sender);
2118 > end;
2119 >
2120 > procedure TIBBase.SetDatabase(Value: TIBDatabase);
2121 > begin
2122 >  if (FDatabase <> nil) then
2123 >    FDatabase.RemoveSQLObject(FIndexInDatabase);
2124 >  FDatabase := Value;
2125 >  if (FDatabase <> nil) then
2126 >  begin
2127 >    FIndexInDatabase := FDatabase.AddSQLObject(Self);
2128 >    if (FTransaction = nil) then
2129 >      Transaction := FDatabase.FindDefaultTransaction;
2130 >  end;
2131 > end;
2132 >
2133 > procedure TIBBase.SetTransaction(Value: TIBTransaction);
2134 > begin
2135 >  if (FTransaction <> nil) then
2136 >    FTransaction.RemoveSQLObject(FIndexInTransaction);
2137 >  FTransaction := Value;
2138 >  if (FTransaction <> nil) then
2139 >  begin
2140 >    FIndexInTransaction := FTransaction.AddSQLObject(Self);
2141 >    if (FDatabase = nil) then
2142 >      Database := FTransaction.FindDefaultDatabase;
2143 >  end;
2144 > end;
2145 >
2146 > { GenerateDPB -
2147 >  Given a string containing a textual representation
2148 >  of the database parameters, generate a database
2149 >  parameter buffer, and return it and its length
2150 >  in DPB and DPBLength, respectively. }
2151 >
2152 > function GenerateDPB(sl: TStrings): IDPB;
2153 > var
2154 >  i, j: Integer;
2155 >  DPBVal: UShort;
2156 >  ParamName, ParamValue: string;
2157 > begin
2158 >  Result := FirebirdAPI.AllocateDPB;
2159 >
2160 >  {Iterate through the textual database parameters, constructing
2161 >   a DPB on-the-fly }
2162 >  for i := 0 to sl.Count - 1 do
2163 >  begin
2164 >    { Get the parameter's name and value from the list,
2165 >      and make sure that the name is all lowercase with
2166 >      no leading 'isc_dpb_' prefix
2167 >    }
2168 >    if (Trim(sl.Names[i]) = '') then
2169 >      continue;
2170 >    ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2171 >    ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2172 >    if (Pos(DPBPrefix, ParamName) = 1) then {mbcs ok}
2173 >      Delete(ParamName, 1, Length(DPBPrefix));
2174 >     { We want to translate the parameter name to some Integer
2175 >       value. We do this by scanning through a list of known
2176 >       database parameter names (DPBConstantNames, defined above) }
2177 >    DPBVal := 0;
2178 >    { Find the parameter }
2179 >    for j := 1 to isc_dpb_last_dpb_constant do
2180 >      if (ParamName = DPBConstantNames[j]) then
2181 >      begin
2182 >        DPBVal := j;
2183 >        break;
2184 >      end;
2185 >     {  A database parameter either contains a string value (case 1)
2186 >       or an Integer value (case 2)
2187 >       or no value at all (case 3)
2188 >       or an error needs to be generated (case else)  }
2189 >    case DPBVal of
2190 >      isc_dpb_user_name, isc_dpb_password, isc_dpb_password_enc,
2191 >      isc_dpb_sys_user_name, isc_dpb_license, isc_dpb_encrypt_key,
2192 >      isc_dpb_lc_messages, isc_dpb_lc_ctype,
2193 >      isc_dpb_sql_role_name, isc_dpb_sql_dialect:
2194 >      begin
2195 >        if DPBVal = isc_dpb_sql_dialect then
2196 >          ParamValue[1] := Char(Ord(ParamValue[1]) - 48);
2197 >        Result.Add(DPBVal).SetAsString(ParamValue);
2198 >      end;
2199 >
2200 >      isc_dpb_num_buffers, isc_dpb_dbkey_scope, isc_dpb_force_write,
2201 >      isc_dpb_no_reserve, isc_dpb_damaged, isc_dpb_verify:
2202 >        Result.Add(DPBVal).SetAsByte(byte(ParamValue[1]));
2203 >
2204 >      isc_dpb_sweep:
2205 >        Result.Add(DPBVal).SetAsByte(isc_dpb_records);
2206 >
2207 >      isc_dpb_sweep_interval:
2208 >        Result.Add(DPBVal).SetAsInteger(StrToInt(ParamValue));
2209 >
2210 >      isc_dpb_activate_shadow, isc_dpb_delete_shadow, isc_dpb_begin_log,
2211 >      isc_dpb_quit_log:
2212 >        Result.Add(DPBVal).SetAsByte(0);
2213 >      else
2214 >      begin
2215 >        if (DPBVal > 0) and
2216 >           (DPBVal <= isc_dpb_last_dpb_constant) then
2217 >          IBError(ibxeDPBConstantNotSupported, [DPBConstantNames[DPBVal]])
2218 >        else
2219 >          IBError(ibxeDPBConstantUnknownEx, [sl.Names[i]]);
2220 >      end;
2221 >    end;
2222 >  end;
2223 > end;
2224 >
2225 > { GenerateTPB -
2226 >  Given a string containing a textual representation
2227 >  of the transaction parameters, generate a transaction
2228 >  parameter buffer, and return it and its length in
2229 >  TPB and TPBLength, respectively. }
2230 > function GenerateTPB(sl: TStrings): ITPB;
2231 > var
2232 >  i, j, TPBVal: Integer;
2233 >  ParamName, ParamValue: string;
2234 > begin
2235 >  Result := FirebirdAPI.AllocateTPB;
2236 >  for i := 0 to sl.Count - 1 do
2237 >  begin
2238 >    if (Trim(sl[i]) =  '') then
2239 >      Continue;
2240 >
2241 >    if (Pos('=', sl[i]) = 0) then {mbcs ok}
2242 >      ParamName := LowerCase(sl[i]) {mbcs ok}
2243 >    else
2244 >    begin
2245 >      ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2246 >      ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2247 >    end;
2248 >    if (Pos(TPBPrefix, ParamName) = 1) then {mbcs ok}
2249 >      Delete(ParamName, 1, Length(TPBPrefix));
2250 >    TPBVal := 0;
2251 >    { Find the parameter }
2252 >    for j := 1 to isc_tpb_last_tpb_constant do
2253 >      if (ParamName = TPBConstantNames[j]) then
2254 >      begin
2255 >        TPBVal := j;
2256 >        break;
2257 >      end;
2258 >    { Now act on it }
2259 >    case TPBVal of
2260 >      isc_tpb_consistency, isc_tpb_exclusive, isc_tpb_protected,
2261 >      isc_tpb_concurrency, isc_tpb_shared, isc_tpb_wait, isc_tpb_nowait,
2262 >      isc_tpb_read, isc_tpb_write, isc_tpb_ignore_limbo,
2263 >      isc_tpb_read_committed, isc_tpb_rec_version, isc_tpb_no_rec_version:
2264 >        Result.Add(TPBVal);
2265 >
2266 >      isc_tpb_lock_read, isc_tpb_lock_write:
2267 >        Result.Add(TPBVal).SetAsString(ParamValue);
2268 >
2269 >      else
2270 >      begin
2271 >        if (TPBVal > 0) and
2272 >           (TPBVal <= isc_tpb_last_tpb_constant) then
2273 >          IBError(ibxeTPBConstantNotSupported, [TPBConstantNames[TPBVal]])
2274 >        else
2275 >          IBError(ibxeTPBConstantUnknownEx, [sl.Names[i]]);
2276 >      end;
2277 >    end;
2278 >  end;
2279 > end;
2280 >
2281 > end.
2282 >
2283 >
2284 >
2285 >
2286 >

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