ViewVC Help
View File | Revision Log | Show Annotations | Download File | View Changeset | Root Listing
root/public/ibx/trunk/runtime/IBDatabase.pas
(Generate patch)

Comparing ibx/trunk/runtime/IBDatabase.pas (file contents):
Revision 21 by tony, Thu Feb 26 10:33:34 2015 UTC vs.
Revision 43 by tony, Thu Sep 22 17:10:15 2016 UTC

# Line 1 | Line 1
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 <    FTraceFlags: TTraceFlags;
163 <    FDBSQLDialect: Integer;
164 <    FSQLDialect: Integer;
165 <    FOnDialectDowngradeWarning: TNotifyEvent;
166 <    FCanTimeout: Boolean;
167 <    FSQLObjects: TList;
168 <    FTransactions: TList;
169 <    FDBName: TIBFileName;
170 <    FDBParams: TStrings;
171 <    FDBParamsChanged: Boolean;
172 <    FDPB: PChar;
173 <    FDPBLength: Short;
174 <    FHandle: TISC_DB_HANDLE;
175 <    FHandleIsShared: Boolean;
176 <    FOnIdleTimer: TNotifyEvent;
177 <    FDefaultTransaction: TIBTransaction;
178 <    FInternalTransaction: TIBTransaction;
179 <    FStreamedConnected: Boolean;
180 <    FTimer: TTimer;
181 <    FUserNames: TStringList;
182 <    FDataSets: TList;
183 <    FLoginCalled: boolean;
184 <    procedure EnsureInactive;
185 <    function GetDBSQLDialect: Integer;
186 <    function GetSQLDialect: Integer;
187 <    procedure SetSQLDialect(const Value: Integer);
188 <    procedure ValidateClientSQLDialect;
189 <    procedure DBParamsChange(Sender: TObject);
190 <    procedure DBParamsChanging(Sender: TObject);
191 <    function GetSQLObject(Index: Integer): TIBBase;
192 <    function GetSQLObjectCount: Integer;
193 <    function GetDBParamByDPB(const Idx: Integer): String;
194 <    function GetIdleTimer: Integer;
195 <    function GetTransaction(Index: Integer): TIBTransaction;
196 <    function GetTransactionCount: Integer;
197 <    function Login: Boolean;
198 <    procedure SetDatabaseName(const Value: TIBFileName);
199 <    procedure SetDBParamByDPB(const Idx: Integer; Value: String);
200 <    procedure SetDBParams(Value: TStrings);
201 <    procedure SetDefaultTransaction(Value: TIBTransaction);
202 <    procedure SetIdleTimer(Value: Integer);
203 <    procedure TimeoutConnection(Sender: TObject);
204 <    function GetIsReadOnly: Boolean;
205 <    function AddSQLObject(ds: TIBBase): Integer;
206 <    procedure RemoveSQLObject(Idx: Integer);
207 <    procedure RemoveSQLObjects;
208 <    procedure InternalClose(Force: Boolean);
209 <
210 <  protected
211 <    procedure DoConnect; override;
212 <    procedure DoDisconnect; override;
213 <    function GetConnected: Boolean; override;
214 <    procedure CheckStreamConnect;
215 <    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
216 <    function GetDataset(Index : longint) : TDataset; override;
217 <    function GetDataSetCount : Longint; override;
218 <    procedure ReadState(Reader: TReader); override;
219 <    procedure SetConnected (Value : boolean); override;
220 <  public
221 <    constructor Create(AOwner: TComponent); override;
222 <    destructor Destroy; override;
223 <    procedure ApplyUpdates(const DataSets: array of TDataSet);
224 <    procedure CloseDataSets;
225 <    procedure CheckActive;
226 <    procedure CheckInactive;
227 <    procedure CreateDatabase;
228 <    procedure DropDatabase;
229 <    procedure ForceClose;
230 <    procedure GetFieldNames(const TableName: string; List: TStrings);
231 <    procedure GetTableNames(List: TStrings; SystemTables: Boolean = False);
232 <    function IndexOfDBConst(st: String): Integer;
233 <    function TestConnected: Boolean;
234 <    procedure CheckDatabaseName;
235 <    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
236 <    function AddTransaction(TR: TIBTransaction): Integer;
237 <    function FindTransaction(TR: TIBTransaction): Integer;
238 <    function FindDefaultTransaction(): TIBTransaction;
239 <    procedure RemoveTransaction(Idx: Integer);
240 <    procedure RemoveTransactions;
241 <    procedure SetHandle(Value: TISC_DB_HANDLE);
242 <
243 <    property Handle: TISC_DB_HANDLE read FHandle;
244 <    property IsReadOnly: Boolean read GetIsReadOnly;
245 <    property DBParamByDPB[const Idx: Integer]: String read GetDBParamByDPB
246 <                                                      write SetDBParamByDPB;
247 <    property SQLObjectCount: Integer read GetSQLObjectCount;
248 <    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
249 <    property HandleIsShared: Boolean read FHandleIsShared;
250 <    property TransactionCount: Integer read GetTransactionCount;
251 <    property Transactions[Index: Integer]: TIBTransaction read GetTransaction;
252 <    property InternalTransaction: TIBTransaction read FInternalTransaction;
253 <
254 <  published
255 <    property Connected;
256 <    property AllowStreamedConnected: boolean read FAllowStreamedConnected
257 <             write FAllowStreamedConnected;
258 <    property DatabaseName: TIBFileName read FDBName write SetDatabaseName;
259 <    property Params: TStrings read FDBParams write SetDBParams;
260 <    property LoginPrompt default True;
261 <    property DefaultTransaction: TIBTransaction read FDefaultTransaction
262 <                                                 write SetDefaultTransaction;
263 <    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer;
264 <    property SQLDialect : Integer read GetSQLDialect write SetSQLDialect default 3;
265 <    property DBSQLDialect : Integer read FDBSQLDialect;
266 <    property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
267 <    property AfterConnect;
268 <    property AfterDisconnect;
269 <    property BeforeConnect;
270 <    property BeforeDisconnect;
271 <    property OnLogin: TIBDatabaseLoginEvent read FOnLogin write FOnLogin;
272 <    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
273 <    property OnDialectDowngradeWarning: TNotifyEvent read FOnDialectDowngradeWarning write FOnDialectDowngradeWarning;
274 <  end;
275 <
276 <  { TIBTransaction }
277 <
278 <  TTransactionAction         = (TARollback, TACommit, TARollbackRetaining, TACommitRetaining);
279 <
280 <  TIBTransaction = class(TComponent)
281 <  private
282 <    FAfterTransactionEnd: TNotifyEvent;
283 <    FBeforeTransactionEnd: TNotifyEvent;
284 <    FIBLoaded: Boolean;
285 <    FCanTimeout         : Boolean;
286 <    FDatabases          : TList;
287 <    FSQLObjects         : TList;
288 <    FDefaultDatabase    : TIBDatabase;
289 <    FHandle             : TISC_TR_HANDLE;
290 <    FHandleIsShared     : Boolean;
291 <    FOnIdleTimer          : TNotifyEvent;
292 <    FStreamedActive     : Boolean;
293 <    FTPB                : PChar;
294 <    FTPBLength          : Short;
295 <    FTimer              : TTimer;
296 <    FDefaultAction      : TTransactionAction;
297 <    FTRParams           : TStrings;
298 <    FTRParamsChanged    : Boolean;
299 <    FInEndTransaction   : boolean;
300 <    FEndAction          : TTransactionAction;
301 <    procedure DoBeforeTransactionEnd;
302 <    procedure DoAfterTransactionEnd;
303 <    procedure EnsureNotInTransaction;
304 <    procedure EndTransaction(Action: TTransactionAction; Force: Boolean);
305 <    function GetDatabase(Index: Integer): TIBDatabase;
306 <    function GetDatabaseCount: Integer;
307 <    function GetSQLObject(Index: Integer): TIBBase;
308 <    function GetSQLObjectCount: Integer;
309 <    function GetInTransaction: Boolean;
310 <    function GetIdleTimer: Integer;
311 <    procedure BeforeDatabaseDisconnect(DB: TIBDatabase);
312 <    procedure SetActive(Value: Boolean);
313 <    procedure SetDefaultAction(Value: TTransactionAction);
314 <    procedure SetDefaultDatabase(Value: TIBDatabase);
315 <    procedure SetIdleTimer(Value: Integer);
316 <    procedure SetTRParams(Value: TStrings);
317 <    procedure TimeoutTransaction(Sender: TObject);
318 <    procedure TRParamsChange(Sender: TObject);
319 <    procedure TRParamsChanging(Sender: TObject);
320 <    function AddSQLObject(ds: TIBBase): Integer;
321 <    procedure RemoveSQLObject(Idx: Integer);
322 <    procedure RemoveSQLObjects;
323 <
324 <  protected
325 <    procedure Loaded; override;
326 <    procedure SetHandle(Value: TISC_TR_HANDLE);
327 <    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
328 <
329 <  public
330 <    constructor Create(AOwner: TComponent); override;
331 <    destructor Destroy; override;
332 <    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
333 <    procedure Commit;
334 <    procedure CommitRetaining;
335 <    procedure Rollback;
336 <    procedure RollbackRetaining;
337 <    procedure StartTransaction;
338 <    procedure CheckInTransaction;
339 <    procedure CheckNotInTransaction;
340 <
341 <    function AddDatabase(db: TIBDatabase): Integer;
342 <    function FindDatabase(db: TIBDatabase): Integer;
343 <    function FindDefaultDatabase: TIBDatabase;
344 <    function GetEndAction: TTransactionAction;
345 <    procedure RemoveDatabase(Idx: Integer);
346 <    procedure RemoveDatabases;
347 <    procedure CheckDatabasesInList;
348 <
349 <    property DatabaseCount: Integer read GetDatabaseCount;
350 <    property Databases[Index: Integer]: TIBDatabase read GetDatabase;
351 <    property SQLObjectCount: Integer read GetSQLObjectCount;
352 <    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
353 <    property Handle: TISC_TR_HANDLE read FHandle;
354 <    property HandleIsShared: Boolean read FHandleIsShared;
355 <    property InTransaction: Boolean read GetInTransaction;
356 <    property TPB: PChar read FTPB;
357 <    property TPBLength: Short read FTPBLength;
358 <  published
359 <    property Active: Boolean read GetInTransaction write SetActive;
360 <    property DefaultDatabase: TIBDatabase read FDefaultDatabase
361 <                                           write SetDefaultDatabase;
362 <    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer default 0;
363 <    property DefaultAction: TTransactionAction read FDefaultAction write SetDefaultAction default taCommit;
364 <    property Params: TStrings read FTRParams write SetTRParams;
365 <    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
366 <    property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd
367 <                                             write FBeforeTransactionEnd;
368 <    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd
369 <                                            write FAfterTransactionEnd;
370 <  end;
371 <
372 <  { TIBBase }
373 <
374 <  { Virtually all components in IB are "descendents" of TIBBase.
375 <    It is to more easily manage the database and transaction
376 <    connections. }
377 <  TIBBase = class(TObject)
378 <  protected
379 <    FDatabase: TIBDatabase;
380 <    FIndexInDatabase: Integer;
381 <    FTransaction: TIBTransaction;
382 <    FIndexInTransaction: Integer;
383 <    FOwner: TObject;
384 <    FBeforeDatabaseDisconnect: TNotifyEvent;
385 <    FAfterDatabaseDisconnect: TNotifyEvent;
386 <    FAfterDatabaseConnect: TNotifyEvent;
387 <    FOnDatabaseFree: TNotifyEvent;
388 <    FBeforeTransactionEnd: TNotifyEvent;
389 <    FAfterTransactionEnd: TNotifyEvent;
390 <    FOnTransactionFree: TNotifyEvent;
391 <
392 <    procedure DoAfterDatabaseConnect; virtual;
393 <    procedure DoBeforeDatabaseDisconnect; virtual;
394 <    procedure DoAfterDatabaseDisconnect; virtual;
395 <    procedure DoDatabaseFree; virtual;
396 <    procedure DoBeforeTransactionEnd; virtual;
397 <    procedure DoAfterTransactionEnd; virtual;
398 <    procedure DoTransactionFree; virtual;
399 <    function GetDBHandle: PISC_DB_HANDLE; virtual;
400 <    function GetTRHandle: PISC_TR_HANDLE; virtual;
401 <    procedure SetDatabase(Value: TIBDatabase); virtual;
402 <    procedure SetTransaction(Value: TIBTransaction); virtual;
403 <  public
404 <    constructor Create(AOwner: TObject);
405 <    destructor Destroy; override;
406 <    procedure CheckDatabase; virtual;
407 <    procedure CheckTransaction; virtual;
408 <  public
409 <    property AfterDatabaseConnect: TNotifyEvent read FAfterDatabaseConnect
410 <                                                write FAfterDatabaseConnect;
411 <    property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect
412 <                                                   write FBeforeDatabaseDisconnect;
413 <    property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect
414 <                                                  write FAfterDatabaseDisconnect;
415 <    property OnDatabaseFree: TNotifyEvent read FOnDatabaseFree write FOnDatabaseFree;
416 <    property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd write FBeforeTransactionEnd;
417 <    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd write FAfterTransactionEnd;
418 <    property OnTransactionFree: TNotifyEvent read FOnTransactionFree write FOnTransactionFree;
419 <    property Database: TIBDatabase read FDatabase
420 <                                    write SetDatabase;
421 <    property DBHandle: PISC_DB_HANDLE read GetDBHandle;
422 <    property Owner: TObject read FOwner;
423 <    property TRHandle: PISC_TR_HANDLE read GetTRHandle;
424 <    property Transaction: TIBTransaction read FTransaction
425 <                                          write SetTransaction;
426 <  end;
427 <
428 < procedure GenerateDPB(sl: TStrings; var DPB: string; var DPBLength: Short);
429 < procedure GenerateTPB(sl: TStrings; var TPB: string; var TPBLength: Short);
430 <
431 <
432 < implementation
433 <
434 < uses IBIntf, IBSQLMonitor, IBCustomDataSet, IBDatabaseInfo, IBSQL, IBUtils,
435 <     typInfo;
436 <
437 < { TIBDatabase }
438 <
439 < constructor TIBDataBase.Create(AOwner: TComponent);
440 < {$ifdef WINDOWS}
441 < var acp: uint;
442 < {$endif}
443 < begin
444 <  inherited Create(AOwner);
445 <  FIBLoaded := False;
446 <  CheckIBLoaded;
447 <  FIBLoaded := True;
448 <  LoginPrompt := True;
449 <  FSQLObjects := TList.Create;
450 <  FTransactions := TList.Create;
451 <  FDBName := '';
452 <  FDBParams := TStringList.Create;
453 <  {$ifdef UNIX}
454 <  if csDesigning in ComponentState then
455 <    FDBParams.Add('lc_ctype=UTF-8');
456 <  {$else}
457 <  {$ifdef WINDOWS}
458 <  if csDesigning in ComponentState then
459 <  begin
460 <    acp := GetACP;
461 <    if (acp >= 1250) and (acp <= 1254) then
462 <      FDBParams.Values['lc_ctype'] := Format('WIN%d',[acp]);
463 <  end;
464 <  {$endif}
465 <  {$endif}
466 <  FDBParamsChanged := True;
467 <  TStringList(FDBParams).OnChange := DBParamsChange;
468 <  TStringList(FDBParams).OnChanging := DBParamsChanging;
469 <  FDPB := nil;
470 <  FHandle := nil;
471 <  FUserNames := nil;
472 <  FInternalTransaction := TIBTransaction.Create(self);
473 <  FInternalTransaction.DefaultDatabase := Self;
474 <  FTimer := TTimer.Create(Self);
475 <  FTimer.Enabled := False;
476 <  FTimer.Interval := 0;
477 <  FTimer.OnTimer := TimeoutConnection;
478 <  FDBSQLDialect := 1;
479 <  FSQLDialect := 3;
480 <  FTraceFlags := [];
481 <  FDataSets := TList.Create;
482 <  CheckStreamConnect;
483 < end;
484 <
485 < destructor TIBDataBase.Destroy;
486 < var
487 <  i: Integer;
488 < begin
489 <  if FIBLoaded then
490 <  begin
491 <    IdleTimer := 0;
492 <    if FHandle <> nil then
493 <      ForceClose;
494 <    for i := 0 to FSQLObjects.Count - 1 do
495 <      if FSQLObjects[i] <> nil then
496 <        SQLObjects[i].DoDatabaseFree;
497 <    RemoveSQLObjects;
498 <    RemoveTransactions;
499 <    FInternalTransaction.Free;
500 <    FreeMem(FDPB);
501 <    FDPB := nil;
502 <    FDBParams.Free;
503 <    FSQLObjects.Free;
504 <    FUserNames.Free;
505 <    FTransactions.Free;
506 <  end;
507 <  FDataSets.Free;
508 <  inherited Destroy;
509 < end;
510 <
511 < function TIBDataBase.Call(ErrCode: ISC_STATUS; RaiseError: Boolean
512 <   ): ISC_STATUS;
513 < begin
514 <  result := ErrCode;
515 <  FCanTimeout := False;
516 <  if RaiseError and (ErrCode > 0) then
517 <    IBDataBaseError;
518 < end;
519 <
520 < procedure TIBDataBase.CheckActive;
521 < begin
522 <  if StreamedConnected and (not Connected) then
523 <    Loaded;
524 <  if FHandle = nil then
525 <    IBError(ibxeDatabaseClosed, [nil]);
526 < end;
527 <
528 < procedure TIBDataBase.EnsureInactive;
529 < begin
530 <  if csDesigning in ComponentState then
531 <  begin
532 <    if FHandle <> nil then
533 <      Close;
534 <  end
535 < end;
536 <
537 < procedure TIBDataBase.CheckInactive;
538 < begin
539 <  if FHandle <> nil then
540 <    IBError(ibxeDatabaseOpen, [nil]);
541 < end;
542 <
543 < procedure TIBDataBase.CheckDatabaseName;
544 < begin
545 <  if (FDBName = '') then
546 <    IBError(ibxeDatabaseNameMissing, [nil]);
547 < end;
548 <
549 < function TIBDataBase.AddSQLObject(ds: TIBBase): Integer;
550 < begin
551 <  result := 0;
552 <  if (ds.Owner is TIBCustomDataSet) then
553 <    FDataSets.Add(ds.Owner);
554 <  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
555 <    Inc(result);
556 <  if (result = FSQLObjects.Count) then
557 <    FSQLObjects.Add(ds)
558 <  else
559 <    FSQLObjects[result] := ds;
560 < end;
561 <
562 < function TIBDataBase.AddTransaction(TR: TIBTransaction): Integer;
563 < begin
564 <  result := FindTransaction(TR);
565 <  if result <> -1 then
566 <  begin
567 <    result := -1;
568 <    exit;
569 <  end;
570 <  result := 0;
571 <  while (result < FTransactions.Count) and (FTransactions[result] <> nil) do
572 <    Inc(result);
573 <  if (result = FTransactions.Count) then
574 <    FTransactions.Add(TR)
575 <  else
576 <    FTransactions[result] := TR;
577 < end;
578 <
579 < procedure TIBDataBase.DoDisconnect;
580 < begin
581 <  if Connected then
582 <    InternalClose(False);
583 <  FDBSQLDialect := 1;
584 < end;
585 <
586 < procedure TIBDataBase.CreateDatabase;
587 < var
588 <  tr_handle: TISC_TR_HANDLE;
589 < begin
590 <  CheckInactive;
591 <  tr_handle := nil;
592 <  Call(
593 <    isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0,
594 <                               PChar('CREATE DATABASE ''' + FDBName + ''' ' + {do not localize}
595 <                               Params.Text), SQLDialect, nil),
596 <    True);
597 < end;
598 <
599 < procedure TIBDataBase.DropDatabase;
600 < begin
601 <  CheckActive;
602 <  Call(isc_drop_database(StatusVector, @FHandle), True);
603 < end;
604 <
605 < procedure TIBDataBase.DBParamsChange(Sender: TObject);
606 < begin
607 <  FDBParamsChanged := True;
608 < end;
609 <
610 < procedure TIBDataBase.DBParamsChanging(Sender: TObject);
611 < begin
612 <  EnsureInactive;
613 <  CheckInactive;
614 < end;
615 <
616 < function TIBDataBase.FindTransaction(TR: TIBTransaction): Integer;
617 < var
618 <  i: Integer;
619 < begin
620 <  result := -1;
621 <  for i := 0 to FTransactions.Count - 1 do
622 <    if TR = Transactions[i] then
623 <    begin
624 <      result := i;
625 <      break;
626 <    end;
627 < end;
628 <
629 < function TIBDataBase.FindDefaultTransaction: TIBTransaction;
630 < var
631 <  i: Integer;
632 < begin
633 <  result := FDefaultTransaction;
634 <  if result = nil then
635 <  begin
636 <    for i := 0 to FTransactions.Count - 1 do
637 <      if (Transactions[i] <> nil) and
638 <        (TIBTransaction(Transactions[i]).DefaultDatabase = self) and
639 <        (TIBTransaction(Transactions[i]) <> FInternalTransaction) then
640 <       begin
641 <         result := TIBTransaction(Transactions[i]);
642 <         break;
643 <       end;
644 <  end;
645 < end;
646 <
647 < procedure TIBDataBase.ForceClose;
648 < begin
649 <  if Connected then
650 <    InternalClose(True);
651 < end;
652 <
653 < function TIBDataBase.GetConnected: Boolean;
654 < begin
655 <  result := FHandle <> nil;
656 < end;
657 <
658 < function TIBDataBase.GetSQLObject(Index: Integer): TIBBase;
659 < begin
660 <  result := FSQLObjects[Index];
661 < end;
662 <
663 < function TIBDataBase.GetSQLObjectCount: Integer;
664 < var
665 <  i: Integer;
666 < begin
667 <  result := 0;
668 <  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
669 <    Inc(result);
670 < end;
671 <
672 < function TIBDataBase.GetDBParamByDPB( const Idx: Integer): String;
673 < var
674 <  ConstIdx, EqualsIdx: Integer;
675 < begin
676 <  if (Idx > 0) and (Idx <= isc_dpb_last_dpb_constant) then
677 <  begin
678 <    ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
679 <    if ConstIdx = -1 then
680 <      result := ''
681 <    else
682 <    begin
683 <      result := Params[ConstIdx];
684 <      EqualsIdx := Pos('=', result); {mbcs ok}
685 <      if EqualsIdx = 0 then
686 <        result := ''
687 <      else
688 <        result := Copy(result, EqualsIdx + 1, Length(result));
689 <    end;
690 <  end
691 <  else
692 <    result := '';
693 < end;
694 <
695 < function TIBDataBase.GetIdleTimer: Integer;
696 < begin
697 <  result := FTimer.Interval;
698 < end;
699 <
700 < function TIBDataBase.GetTransaction(Index: Integer): TIBTransaction;
701 < begin
702 <  result := FTransactions[Index];
703 < end;
704 <
705 < function TIBDataBase.GetTransactionCount: Integer;
706 < var
707 <  i: Integer;
708 < begin
709 <  result := 0;
710 <  for i := 0 to FTransactions.Count - 1 do
711 <    if FTransactions[i] <> nil then
712 <      Inc(result);
713 < end;
714 <
715 < function TIBDataBase.IndexOfDBConst(st: String): Integer;
716 < var
717 <  i, pos_of_str: Integer;
718 < begin
719 <  result := -1;
720 <  for i := 0 to Params.Count - 1 do
721 <  begin
722 <    pos_of_str := Pos(st, AnsiLowerCase(Params[i])); {mbcs ok}
723 <    if (pos_of_str = 1) or (pos_of_str = Length(DPBPrefix) + 1) then
724 <    begin
725 <      result := i;
726 <      break;
727 <    end;
728 <  end;
729 < end;
730 <
731 < procedure TIBDataBase.InternalClose(Force: Boolean);
732 < var
733 <  i: Integer;
734 < begin
735 <  CheckActive;
736 <  { Tell all connected transactions that we're disconnecting.
737 <    This is so transactions can commit/rollback, accordingly
738 <  }
739 <  for i := 0 to FTransactions.Count - 1 do
740 <  begin
741 <    try
742 <      if FTransactions[i] <> nil then
743 <        Transactions[i].BeforeDatabaseDisconnect(Self);
744 <    except
745 <      if not Force then
746 <        raise;
747 <    end;
748 <  end;
749 <  for i := 0 to FSQLObjects.Count - 1 do
750 <  begin
751 <    try
752 <      if FSQLObjects[i] <> nil then
753 <        SQLObjects[i].DoBeforeDatabaseDisconnect;
754 <    except
755 <      if not Force then
756 <        raise;
757 <    end;
758 <  end;
759 <
760 <  if (not HandleIsShared) and
761 <     (Call(isc_detach_database(StatusVector, @FHandle), False) > 0) and
762 <     (not Force) then
763 <    IBDataBaseError
764 <  else
765 <  begin
766 <    FHandle := nil;
767 <    FHandleIsShared := False;
768 <  end;
769 <
770 <  if not (csDesigning in ComponentState) then
771 <    MonitorHook.DBDisconnect(Self);
772 <
773 <  for i := 0 to FSQLObjects.Count - 1 do
774 <    if FSQLObjects[i] <> nil then
775 <      SQLObjects[i].DoAfterDatabaseDisconnect;
776 < end;
777 <
778 < procedure TIBDataBase.CheckStreamConnect;
779 < var
780 <  i: integer;
781 < begin
782 <  try
783 <    if not (csDesigning in ComponentState) and StreamedConnected and (not Connected) then
784 <    begin
785 <      for i := 0 to FTransactions.Count - 1 do
786 <        if  FTransactions[i] <> nil then
787 <        begin
788 <          with TIBTransaction(FTransactions[i]) do
789 <            if not Active then
790 <              if FStreamedActive and not InTransaction then
791 <              begin
792 <                StartTransaction;
793 <                FStreamedActive := False;
794 <              end;
795 <        end;
796 <      if (FDefaultTransaction <> nil) and
797 <         (FDefaultTransaction.FStreamedActive) and
798 <         (not FDefaultTransaction.InTransaction) then
799 <        FDefaultTransaction.StartTransaction;
800 <      FStreamedConnected := False;
801 <    end;
802 <  except
803 <    if csDesigning in ComponentState then
804 <      Application.HandleException(Self)
805 <    else
806 <      raise;
807 <  end;
808 < end;
809 <
810 < procedure TIBDataBase.Notification(AComponent: TComponent;
811 <   Operation: TOperation);
812 < var
813 <  i: Integer;
814 < begin
815 <  inherited Notification( AComponent, Operation);
816 <  if (Operation = opRemove) and (AComponent = FDefaultTransaction) then
817 <  begin
818 <    i := FindTransaction(FDefaultTransaction);
819 <    if (i <> -1) then
820 <      RemoveTransaction(i);
821 <    FDefaultTransaction := nil;
822 <  end;
823 < end;
824 <
825 < function TIBDataBase.Login: Boolean;
826 < var
827 <  IndexOfUser, IndexOfPassword: Integer;
828 <  Username, Password, OldPassword: String;
829 <  LoginParams: TStrings;
830 <
831 <  procedure HidePassword;
832 <  var
833 <    I: Integer;
834 <    IndexAt: Integer;
835 <  begin
836 <    IndexAt := 0;
837 <    for I := 0 to Params.Count -1 do
838 <      if Pos('password', LowerCase(Trim(Params.Names[i]))) = 1 then {mbcs ok}
839 <      begin
840 <        FHiddenPassword := Params.Values[Params.Names[i]];
841 <        IndexAt := I;
842 <        break;
843 <      end;
844 <    if IndexAt <> 0 then
845 <      Params.Delete(IndexAt);
846 <  end;
847 <
848 < begin
849 <  Result := false;
850 <  if FLoginCalled then Exit;
851 <  FLoginCalled := true;
852 <  try
853 <  if Assigned(FOnLogin) and not (csDesigning in ComponentState) then
854 <  begin
855 <    result := True;
856 <    LoginParams := TStringList.Create;
857 <    try
858 <      LoginParams.Assign(Params);
859 <      FOnLogin(Self, LoginParams);
860 <      Params.Assign (LoginParams);
861 <      HidePassword;
862 <    finally
863 <      LoginParams.Free;
864 <    end;
865 <  end
866 <  else
867 <  begin
868 <    IndexOfUser := IndexOfDBConst(DPBConstantNames[isc_dpb_user_name]);
869 <    if IndexOfUser <> -1 then
870 <      Username := Copy(Params[IndexOfUser],
871 <                                         Pos('=', Params[IndexOfUser]) + 1, {mbcs ok}
872 <                                         Length(Params[IndexOfUser]));
873 <    IndexOfPassword := IndexOfDBConst(DPBConstantNames[isc_dpb_password]);
874 <    if IndexOfPassword <> -1 then
875 <    begin
876 <      Password := Copy(Params[IndexOfPassword],
877 <                                         Pos('=', Params[IndexOfPassword]) + 1, {mbcs ok}
878 <                                         Length(Params[IndexOfPassword]));
879 <      OldPassword := password;
880 <    end;
881 <    result := LoginDialogEx(DatabaseName, Username, Password, False);
882 <    if result then
883 <    begin
884 <      if IndexOfUser = -1 then
885 <        Params.Add(DPBConstantNames[isc_dpb_user_name] + '=' + Username)
886 <      else
887 <        Params[IndexOfUser] := DPBConstantNames[isc_dpb_user_name] +
888 <                                 '=' + Username;
889 <      if (Password = OldPassword) then
890 <        FHiddenPassword := ''
891 <      else
892 <      begin
893 <        FHiddenPassword := Password;
894 <        if OldPassword <> '' then
895 <          HidePassword;
896 <      end;
897 <    end;
898 <  end;
899 <  finally
900 <    FLoginCalled := false
901 <  end;
902 < end;
903 <
904 < procedure TIBDataBase.DoConnect;
905 < var
906 <  DPB: String;
907 <  TempDBParams: TStrings;
908 <  I: integer;
909 <
910 < begin
911 <  CheckInactive;
912 <  CheckDatabaseName;
913 <  if (not LoginPrompt) and (FHiddenPassword <> '') then
914 <  begin
915 <    FHiddenPassword := '';
916 <    FDBParamsChanged := True;
917 <  end;
918 <  { Use builtin login prompt if requested }
919 <  if (LoginPrompt or (csDesigning in ComponentState)) and not Login then
920 <    IBError(ibxeOperationCancelled, [nil]);
921 <  { Generate a new DPB if necessary }
922 <  if (FDBParamsChanged) then
923 <  begin
924 <    FDBParamsChanged := False;
925 <    if (not LoginPrompt and not (csDesigning in ComponentState)) or (FHiddenPassword = '') then
926 <      GenerateDPB(FDBParams, DPB, FDPBLength)
927 <    else
928 <    begin
929 <      TempDBParams := TStringList.Create;
930 <      try
931 <       TempDBParams.Assign(FDBParams);
932 <       TempDBParams.Add('password=' + FHiddenPassword);
933 <       GenerateDPB(TempDBParams, DPB, FDPBLength);
934 <      finally
935 <       TempDBParams.Free;
936 <      end;
937 <    end;
938 <    IBAlloc(FDPB, 0, FDPBLength);
939 <    Move(DPB[1], FDPB[0], FDPBLength);
940 <  end;
941 <  if Call(isc_attach_database(StatusVector, Length(FDBName),
942 <                         PChar(FDBName), @FHandle,
943 <                         FDPBLength, FDPB), False) > 0 then
944 <  begin
945 <    FHandle := nil;
946 <    IBDataBaseError;
947 <  end;
948 <  FDBSQLDialect := GetDBSQLDialect;
949 <  ValidateClientSQLDialect;
950 <  for i := 0 to FSQLObjects.Count - 1 do
951 <  begin
952 <      if FSQLObjects[i] <> nil then
953 <        SQLObjects[i].DoAfterDatabaseConnect;
954 <  end;
955 <  if not (csDesigning in ComponentState) then
956 <    MonitorHook.DBConnect(Self);
957 < end;
958 <
959 < procedure TIBDataBase.RemoveSQLObject(Idx: Integer);
960 < var
961 <  ds: TIBBase;
962 < begin
963 <  if (Idx >= 0) and (FSQLObjects[Idx] <> nil) then
964 <  begin
965 <    ds := SQLObjects[Idx];
966 <    FSQLObjects[Idx] := nil;
967 <    ds.Database := nil;
968 <    if (ds.owner is TDataSet) then
969 <      FDataSets.Remove(TDataSet(ds.Owner));
970 <  end;
971 < end;
972 <
973 < procedure TIBDataBase.RemoveSQLObjects;
974 < var
975 <  i: Integer;
976 < begin
977 <  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
978 <  begin
979 <    RemoveSQLObject(i);
980 <    if (TIBBase(FSQLObjects[i]).owner is TDataSet) then
981 <      FDataSets.Remove(TDataSet(TIBBase(FSQLObjects[i]).owner));
982 <  end;
983 < end;
984 <
985 < procedure TIBDataBase.RemoveTransaction(Idx: Integer);
986 < var
987 <  TR: TIBTransaction;
988 < begin
989 <  if ((Idx >= 0) and (FTransactions[Idx] <> nil)) then
990 <  begin
991 <    TR := Transactions[Idx];
992 <    FTransactions[Idx] := nil;
993 <    TR.RemoveDatabase(TR.FindDatabase(Self));
994 <    if TR = FDefaultTransaction then
995 <      FDefaultTransaction := nil;
996 <  end;
997 < end;
998 <
999 < procedure TIBDataBase.RemoveTransactions;
1000 < var
1001 <  i: Integer;
1002 < begin
1003 <  for i := 0 to FTransactions.Count - 1 do if FTransactions[i] <> nil then
1004 <    RemoveTransaction(i);
1005 < end;
1006 <
1007 < procedure TIBDataBase.SetDatabaseName( const Value: TIBFileName);
1008 < begin
1009 <  if FDBName <> Value then
1010 <  begin
1011 <    EnsureInactive;
1012 <    CheckInactive;
1013 <    FDBName := Value;
1014 <  end;
1015 < end;
1016 <
1017 < procedure TIBDataBase.SetDBParamByDPB( const Idx: Integer; Value: String);
1018 < var
1019 <  ConstIdx: Integer;
1020 < begin
1021 <  ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
1022 <  if (Value = '') then
1023 <  begin
1024 <    if ConstIdx <> -1 then
1025 <      Params.Delete(ConstIdx);
1026 <  end
1027 <  else
1028 <  begin
1029 <    if (ConstIdx = -1) then
1030 <      Params.Add(DPBConstantNames[Idx] + '=' + Value)
1031 <    else
1032 <      Params[ConstIdx] := DPBConstantNames[Idx] + '=' + Value;
1033 <  end;
1034 < end;
1035 <
1036 < procedure TIBDataBase.SetDBParams(Value: TStrings);
1037 < begin
1038 <  FDBParams.Assign(Value);
1039 < end;
1040 <
1041 < procedure TIBDataBase.SetDefaultTransaction(Value: TIBTransaction);
1042 < var
1043 <  i: Integer;
1044 < begin
1045 <  if (FDefaultTransaction <> nil) and (FDefaultTransaction <> Value) then
1046 <  begin
1047 <    i := FindTransaction(FDefaultTransaction);
1048 <    if (i <> -1) and (FDefaultTransaction.DefaultDatabase <> self) then
1049 <      RemoveTransaction(i);
1050 <  end;
1051 <  if (Value <> nil) and (FDefaultTransaction <> Value) then
1052 <  begin
1053 <    Value.AddDatabase(Self);
1054 <    AddTransaction(Value);
1055 <  end;
1056 <  FDefaultTransaction := Value;
1057 < end;
1058 <
1059 < procedure TIBDataBase.SetHandle(Value: TISC_DB_HANDLE);
1060 < begin
1061 <  if HandleIsShared then
1062 <    Close
1063 <  else
1064 <    CheckInactive;
1065 <  FHandle := Value;
1066 <  FHandleIsShared := (Value <> nil);
1067 < end;
1068 <
1069 < procedure TIBDataBase.SetIdleTimer(Value: Integer);
1070 < begin
1071 <  if Value < 0 then
1072 <    IBError(ibxeTimeoutNegative, [nil])
1073 <  else
1074 <    if (Value = 0) then
1075 <    begin
1076 <      FTimer.Enabled := False;
1077 <      FTimer.Interval := 0;
1078 <    end
1079 <    else
1080 <      if (Value > 0) then
1081 <      begin
1082 <        FTimer.Interval := Value;
1083 <        if not (csDesigning in ComponentState) then
1084 <          FTimer.Enabled := True;
1085 <      end;
1086 < end;
1087 <
1088 < function TIBDataBase.TestConnected: Boolean;
1089 < var
1090 <  DatabaseInfo: TIBDatabaseInfo;
1091 < begin
1092 <  result := Connected;
1093 <  if result then
1094 <  begin
1095 <    DatabaseInfo := TIBDatabaseInfo.Create(self);
1096 <    try
1097 <      DatabaseInfo.Database := self;
1098 <      { poke the server to see if connected }
1099 <      if DatabaseInfo.BaseLevel = 0 then ;
1100 <      DatabaseInfo.Free;
1101 <    except
1102 <      ForceClose;
1103 <      result := False;
1104 <      DatabaseInfo.Free;
1105 <    end;
1106 <  end;
1107 < end;
1108 <
1109 < procedure TIBDataBase.TimeoutConnection(Sender: TObject);
1110 < begin
1111 <  if Connected then
1112 <  begin
1113 <    if FCanTimeout then
1114 <    begin
1115 <      ForceClose;
1116 <      if Assigned(FOnIdleTimer) then
1117 <        FOnIdleTimer(Self);
1118 <    end
1119 <    else
1120 <      FCanTimeout := True;
1121 <  end;
1122 < end;
1123 <
1124 < function TIBDataBase.GetIsReadOnly: Boolean;
1125 < var
1126 <  DatabaseInfo: TIBDatabaseInfo;
1127 < begin
1128 <  DatabaseInfo := TIBDatabaseInfo.Create(self);
1129 <  DatabaseInfo.Database := self;
1130 <  if (DatabaseInfo.ODSMajorVersion < 10) then
1131 <    result := false
1132 <  else
1133 <  begin
1134 <    if (DatabaseInfo.ReadOnly = 0) then
1135 <      result := false
1136 <    else
1137 <      result := true;
1138 <  end;
1139 <  DatabaseInfo.Free;
1140 < end;
1141 <
1142 < function TIBDataBase.GetSQLDialect: Integer;
1143 < begin
1144 <  Result := FSQLDialect;
1145 < end;
1146 <
1147 <
1148 < procedure TIBDataBase.SetSQLDialect( const Value: Integer);
1149 < begin
1150 <  if (Value < 1) then IBError(ibxeSQLDialectInvalid, [nil]);
1151 <  if ((FHandle = nil) or (Value <= FDBSQLDialect))  then
1152 <    FSQLDialect := Value
1153 <  else
1154 <    IBError(ibxeSQLDialectInvalid, [nil]);
1155 < end;
1156 <
1157 < function TIBDataBase.GetDBSQLDialect: Integer;
1158 < var
1159 <  DatabaseInfo: TIBDatabaseInfo;
1160 < begin
1161 <  DatabaseInfo := TIBDatabaseInfo.Create(self);
1162 <  DatabaseInfo.Database := self;
1163 <  result := DatabaseInfo.DBSQLDialect;
1164 <  DatabaseInfo.Free;
1165 < end;
1166 <
1167 < procedure TIBDataBase.ValidateClientSQLDialect;
1168 < begin
1169 <  if (FDBSQLDialect < FSQLDialect) then
1170 <  begin
1171 <    FSQLDialect := FDBSQLDialect;
1172 <    if Assigned (FOnDialectDowngradeWarning) then
1173 <      FOnDialectDowngradeWarning(self);
1174 <  end;
1175 < end;
1176 <
1177 < procedure TIBDataBase.ApplyUpdates( const DataSets: array of TDataSet);
1178 < var
1179 <  I: Integer;
1180 <  DS: TIBCustomDataSet;
1181 <  TR: TIBTransaction;
1182 < begin
1183 <  TR := nil;
1184 <  for I := 0 to High(DataSets) do
1185 <  begin
1186 <    DS := TIBCustomDataSet(DataSets[I]);
1187 <    if DS.Database <> Self then
1188 <      IBError(ibxeUpdateWrongDB, [nil]);
1189 <    if TR = nil then
1190 <      TR := DS.Transaction;
1191 <    if (DS.Transaction <> TR) or (TR = nil) then
1192 <      IBError(ibxeUpdateWrongTR, [nil]);
1193 <  end;
1194 <  TR.CheckInTransaction;
1195 <  for I := 0 to High(DataSets) do
1196 <  begin
1197 <    DS := TIBCustomDataSet(DataSets[I]);
1198 <    DS.ApplyUpdates;
1199 <  end;
1200 <  TR.CommitRetaining;
1201 < end;
1202 <
1203 < procedure TIBDataBase.CloseDataSets;
1204 < var
1205 <  i: Integer;
1206 < begin
1207 <  for i := 0 to DataSetCount - 1 do
1208 <    if (DataSets[i] <> nil) then
1209 <      DataSets[i].close;
1210 < end;
1211 <
1212 < function TIBDataBase.GetDataset(Index: longint): TDataset;
1213 < begin
1214 <  if (Index >= 0) and (Index < FDataSets.Count) then
1215 <    Result := TDataSet(FDataSets[Index])
1216 <  else
1217 <    raise Exception.Create('Invalid Index to DataSets');
1218 < end;
1219 <
1220 < function TIBDataBase.GetDataSetCount: Longint;
1221 < begin
1222 <  Result := FDataSets.Count;
1223 < end;
1224 <
1225 < procedure TIBDataBase.ReadState(Reader: TReader);
1226 < begin
1227 <  FDBParams.Clear;
1228 <  inherited ReadState(Reader);
1229 < end;
1230 <
1231 < procedure TIBDataBase.SetConnected(Value: boolean);
1232 < begin
1233 <  if StreamedConnected and not AllowStreamedConnected then
1234 <  begin
1235 <    StreamedConnected := false;
1236 <    Value := false
1237 <  end;
1238 <  inherited SetConnected(Value);
1239 < end;
1240 <
1241 < procedure TIBDataBase.GetFieldNames( const TableName: string; List: TStrings);
1242 < var
1243 <  Query: TIBSQL;
1244 < begin
1245 <  if TableName = '' then
1246 <    IBError(ibxeNoTableName, [nil]);
1247 <  if not Connected then
1248 <    Open;
1249 <  if not FInternalTransaction.Active then
1250 <    FInternalTransaction.StartTransaction;
1251 <  Query := TIBSQL.Create(self);
1252 <  try
1253 <    Query.GoToFirstRecordOnExecute := False;
1254 <    Query.Database := Self;
1255 <    Query.Transaction := FInternalTransaction;
1256 <    Query.SQL.Text := 'Select R.RDB$FIELD_NAME ' + {do not localize}
1257 <      'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
1258 <      'where R.RDB$RELATION_NAME = ' + {do not localize}
1259 <      '''' +
1260 <      FormatIdentifierValue(SQLDialect, TableName) +
1261 <      ''' ' +
1262 <      'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '; {do not localize}
1263 <    Query.Prepare;
1264 <    Query.ExecQuery;
1265 <    with List do
1266 <    begin
1267 <      BeginUpdate;
1268 <      try
1269 <        Clear;
1270 <        while (not Query.EOF) and (Query.Next <> nil) do
1271 <          List.Add(TrimRight(Query.Current.ByName('RDB$FIELD_NAME').AsString)); {do not localize}
1272 <      finally
1273 <        EndUpdate;
1274 <      end;
1275 <    end;
1276 <  finally
1277 <    Query.free;
1278 <    FInternalTransaction.Commit;
1279 <  end;
1280 < end;
1281 <
1282 < procedure TIBDataBase.GetTableNames(List: TStrings; SystemTables: Boolean);
1283 < var
1284 <  Query : TIBSQL;
1285 < begin
1286 <  if not (csReading in ComponentState) then
1287 <  begin
1288 <    if not Connected then
1289 <      Open;
1290 <    if not FInternalTransaction.Active then
1291 <      FInternalTransaction.StartTransaction;
1292 <    Query := TIBSQL.Create(self);
1293 <    try
1294 <      Query.GoToFirstRecordOnExecute := False;
1295 <      Query.Database := Self;
1296 <      Query.Transaction := FInternalTransaction;
1297 <      if SystemTables then
1298 <        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1299 <                          ' where RDB$VIEW_BLR is NULL' {do not localize}
1300 <      else
1301 <        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1302 <                          ' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
1303 <      Query.Prepare;
1304 <      Query.ExecQuery;
1305 <      with List do
1306 <      begin
1307 <        BeginUpdate;
1308 <        try
1309 <          Clear;
1310 <          while (not Query.EOF) and (Query.Next <> nil) do
1311 <            List.Add(TrimRight(Query.Current[0].AsString));
1312 <        finally
1313 <          EndUpdate;
1314 <        end;
1315 <      end;
1316 <    finally
1317 <      Query.Free;
1318 <      FInternalTransaction.Commit;
1319 <    end;
1320 <  end;
1321 < end;
1322 <
1323 < { TIBTransaction }
1324 <
1325 < constructor TIBTransaction.Create(AOwner: TComponent);
1326 < begin
1327 <  inherited Create(AOwner);
1328 <  FIBLoaded := False;
1329 <  CheckIBLoaded;
1330 <  FIBLoaded := True;
1331 <  CheckIBLoaded;
1332 <  FDatabases := TList.Create;
1333 <  FSQLObjects := TList.Create;
1334 <  FHandle := nil;
1335 <  FTPB := nil;
1336 <  FTPBLength := 0;
1337 <  FTRParams := TStringList.Create;
1338 <  FTRParamsChanged := True;
1339 <  TStringList(FTRParams).OnChange := TRParamsChange;
1340 <  TStringList(FTRParams).OnChanging := TRParamsChanging;
1341 <  FTimer := TTimer.Create(Self);
1342 <  FTimer.Enabled := False;
1343 <  FTimer.Interval := 0;
1344 <  FTimer.OnTimer := TimeoutTransaction;
1345 <  FDefaultAction := taCommit;
1346 < end;
1347 <
1348 < destructor TIBTransaction.Destroy;
1349 < var
1350 <  i: Integer;
1351 < begin
1352 <  if FIBLoaded then
1353 <  begin
1354 <    if InTransaction then
1355 <      EndTransaction(FDefaultAction, True);
1356 <    for i := 0 to FSQLObjects.Count - 1 do
1357 <      if FSQLObjects[i] <> nil then
1358 <        SQLObjects[i].DoTransactionFree;
1359 <    RemoveSQLObjects;
1360 <    RemoveDatabases;
1361 <    FreeMem(FTPB);
1362 <    FTPB := nil;
1363 <    FTRParams.Free;
1364 <    FSQLObjects.Free;
1365 <    FDatabases.Free;
1366 <  end;
1367 <  inherited Destroy;
1368 < end;
1369 <
1370 < function TIBTransaction.Call(ErrCode: ISC_STATUS;
1371 <  RaiseError: Boolean): ISC_STATUS;
1372 < var
1373 <  i: Integer;
1374 < begin
1375 <  result := ErrCode;
1376 <  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1377 <    Databases[i].FCanTimeout := False;
1378 <  FCanTimeout := False;
1379 <  if RaiseError and (result > 0) then
1380 <    IBDataBaseError;
1381 < end;
1382 <
1383 < procedure TIBTransaction.CheckDatabasesInList;
1384 < begin
1385 <  if GetDatabaseCount = 0 then
1386 <    IBError(ibxeNoDatabasesInTransaction, [nil]);
1387 < end;
1388 <
1389 < procedure TIBTransaction.CheckInTransaction;
1390 < begin
1391 <  if FStreamedActive and (not InTransaction) then
1392 <    Loaded;
1393 <  if (FHandle = nil) then
1394 <    IBError(ibxeNotInTransaction, [nil]);
1395 < end;
1396 <
1397 < procedure TIBTransaction.DoBeforeTransactionEnd;
1398 < begin
1399 <  if Assigned(FBeforeTransactionEnd) then
1400 <    FBeforeTransactionEnd(self);
1401 < end;
1402 <
1403 < procedure TIBTransaction.DoAfterTransactionEnd;
1404 < begin
1405 <  if Assigned(FAfterTransactionEnd) then
1406 <    FAfterTransactionEnd(self);
1407 < end;
1408 <
1409 < procedure TIBTransaction.EnsureNotInTransaction;
1410 < begin
1411 <  if csDesigning in ComponentState then
1412 <  begin
1413 <    if FHandle <> nil then
1414 <      Rollback;
1415 <  end;
1416 < end;
1417 <
1418 < procedure TIBTransaction.CheckNotInTransaction;
1419 < begin
1420 <  if (FHandle <> nil) then
1421 <    IBError(ibxeInTransaction, [nil]);
1422 < end;
1423 <
1424 < function TIBTransaction.AddDatabase(db: TIBDatabase): Integer;
1425 < var
1426 <  i: Integer;
1427 <  NilFound: Boolean;
1428 < begin
1429 <  i := FindDatabase(db);
1430 <  if i <> -1 then
1431 <  begin
1432 <    result := i;
1433 <    exit;
1434 <  end;
1435 <  NilFound := False;
1436 <  i := 0;
1437 <  while (not NilFound) and (i < FDatabases.Count) do
1438 <  begin
1439 <    NilFound := (FDatabases[i] = nil);
1440 <    if (not NilFound) then
1441 <      Inc(i);
1442 <  end;
1443 <  if (NilFound) then
1444 <  begin
1445 <    FDatabases[i] := db;
1446 <    result := i;
1447 <  end
1448 <  else
1449 <  begin
1450 <    result := FDatabases.Count;
1451 <    FDatabases.Add(db);
1452 <  end;
1453 < end;
1454 <
1455 < function TIBTransaction.AddSQLObject(ds: TIBBase): Integer;
1456 < begin
1457 <  result := 0;
1458 <  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
1459 <    Inc(result);
1460 <  if (result = FSQLObjects.Count) then
1461 <    FSQLObjects.Add(ds)
1462 <  else
1463 <    FSQLObjects[result] := ds;
1464 < end;
1465 <
1466 < procedure TIBTransaction.Commit;
1467 < begin
1468 <  EndTransaction(TACommit, False);
1469 < end;
1470 <
1471 < procedure TIBTransaction.CommitRetaining;
1472 < begin
1473 <  EndTransaction(TACommitRetaining, False);
1474 < end;
1475 <
1476 < procedure TIBTransaction.EndTransaction(Action: TTransactionAction;
1477 <  Force: Boolean);
1478 < var
1479 <  status: ISC_STATUS;
1480 <  i: Integer;
1481 < begin
1482 <  CheckInTransaction;
1483 <  if FInEndTransaction then Exit;
1484 <  FInEndTransaction := true;
1485 <  FEndAction := Action;
1486 <  try
1487 <  case Action of
1488 <    TARollback, TACommit:
1489 <    begin
1490 <      if (HandleIsShared) and
1491 <         (Action <> FDefaultAction) and
1492 <         (not Force) then
1493 <        IBError(ibxeCantEndSharedTransaction, [nil]);
1494 <      DoBeforeTransactionEnd;
1495 <      for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1496 <        SQLObjects[i].DoBeforeTransactionEnd;
1497 <      if InTransaction then
1498 <      begin
1499 <        if HandleIsShared then
1500 <        begin
1501 <          FHandle := nil;
1502 <          FHandleIsShared := False;
1503 <          status := 0;
1504 <        end
1505 <        else
1506 <          if (Action = TARollback) then
1507 <            status := Call(isc_rollback_transaction(StatusVector, @FHandle), False)
1508 <          else
1509 <            status := Call(isc_commit_transaction(StatusVector, @FHandle), False);
1510 <        if ((Force) and (status > 0)) then
1511 <          status := Call(isc_rollback_transaction(StatusVector, @FHandle), False);
1512 <        if Force then
1513 <          FHandle := nil
1514 <        else
1515 <          if (status > 0) then
1516 <            IBDataBaseError;
1517 <        for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1518 <          SQLObjects[i].DoAfterTransactionEnd;
1519 <        DoAfterTransactionEnd;
1520 <      end;
1521 <    end;
1522 <    TACommitRetaining:
1523 <      Call(isc_commit_retaining(StatusVector, @FHandle), True);
1524 <    TARollbackRetaining:
1525 <      Call(isc_rollback_retaining(StatusVector, @FHandle), True);
1526 <  end;
1527 <  if not (csDesigning in ComponentState) then
1528 <  begin
1529 <    case Action of
1530 <      TACommit:
1531 <        MonitorHook.TRCommit(Self);
1532 <      TARollback:
1533 <        MonitorHook.TRRollback(Self);
1534 <      TACommitRetaining:
1535 <        MonitorHook.TRCommitRetaining(Self);
1536 <      TARollbackRetaining:
1537 <        MonitorHook.TRRollbackRetaining(Self);
1538 <    end;
1539 <  end;
1540 <  finally
1541 <    FInEndTransaction := false
1542 <  end;
1543 < end;
1544 <
1545 < function TIBTransaction.GetDatabase(Index: Integer): TIBDatabase;
1546 < begin
1547 <  result := FDatabases[Index];
1548 < end;
1549 <
1550 < function TIBTransaction.GetDatabaseCount: Integer;
1551 < var
1552 <  i, Cnt: Integer;
1553 < begin
1554 <  result := 0;
1555 <  Cnt := FDatabases.Count - 1;
1556 <  for i := 0 to Cnt do if FDatabases[i] <> nil then
1557 <    Inc(result);
1558 < end;
1559 <
1560 < function TIBTransaction.GetSQLObject(Index: Integer): TIBBase;
1561 < begin
1562 <  result := FSQLObjects[Index];
1563 < end;
1564 <
1565 < function TIBTransaction.GetSQLObjectCount: Integer;
1566 < var
1567 <  i, Cnt: Integer;
1568 < begin
1569 <  result := 0;
1570 <  Cnt := FSQLObjects.Count - 1;
1571 <  for i := 0 to Cnt do if FSQLObjects[i] <> nil then
1572 <    Inc(result);
1573 < end;
1574 <
1575 < function TIBTransaction.GetInTransaction: Boolean;
1576 < begin
1577 <  result := (FHandle <> nil);
1578 < end;
1579 <
1580 < function TIBTransaction.FindDatabase(db: TIBDatabase): Integer;
1581 < var
1582 <  i: Integer;
1583 < begin
1584 <  result := -1;
1585 <  for i := 0 to FDatabases.Count - 1 do
1586 <    if db = TIBDatabase(FDatabases[i]) then
1587 <    begin
1588 <      result := i;
1589 <      break;
1590 <    end;
1591 < end;
1592 <
1593 < function TIBTransaction.FindDefaultDatabase: TIBDatabase;
1594 < var
1595 <  i: Integer;
1596 < begin
1597 <  result := FDefaultDatabase;
1598 <  if result = nil then
1599 <  begin
1600 <    for i := 0 to FDatabases.Count - 1 do
1601 <      if (TIBDatabase(FDatabases[i]) <> nil) and
1602 <        (TIBDatabase(FDatabases[i]).DefaultTransaction = self) then
1603 <      begin
1604 <        result := TIBDatabase(FDatabases[i]);
1605 <        break;
1606 <      end;
1607 <  end;
1608 < end;
1609 <
1610 < function TIBTransaction.GetEndAction: TTransactionAction;
1611 < begin
1612 <  if FInEndTransaction then
1613 <     Result := FEndAction
1614 <  else
1615 <     IBError(ibxeIB60feature, [nil])
1616 < end;
1617 <
1618 <
1619 < function TIBTransaction.GetIdleTimer: Integer;
1620 < begin
1621 <  result := FTimer.Interval;
1622 < end;
1623 <
1624 < procedure TIBTransaction.Loaded;
1625 < begin
1626 <  inherited Loaded;
1627 < end;
1628 <
1629 < procedure TIBTransaction.BeforeDatabaseDisconnect(DB: TIBDatabase);
1630 < begin
1631 <  if InTransaction then
1632 <    EndTransaction(FDefaultAction, True);
1633 < end;
1634 <
1635 < procedure TIBTransaction.RemoveDatabase(Idx: Integer);
1636 < var
1637 <  DB: TIBDatabase;
1638 < begin
1639 <  if ((Idx >= 0) and (FDatabases[Idx] <> nil)) then
1640 <  begin
1641 <    DB := Databases[Idx];
1642 <    FDatabases[Idx] := nil;
1643 <    DB.RemoveTransaction(DB.FindTransaction(Self));
1644 <    if DB = FDefaultDatabase then
1645 <      FDefaultDatabase := nil;
1646 <  end;
1647 < end;
1648 <
1649 < procedure TIBTransaction.RemoveDatabases;
1650 < var
1651 <  i: Integer;
1652 < begin
1653 <  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1654 <    RemoveDatabase(i);
1655 < end;
1656 <
1657 < procedure TIBTransaction.RemoveSQLObject(Idx: Integer);
1658 < var
1659 <  ds: TIBBase;
1660 < begin
1661 <  if ((Idx >= 0) and (FSQLObjects[Idx] <> nil)) then
1662 <  begin
1663 <    ds := SQLObjects[Idx];
1664 <    FSQLObjects[Idx] := nil;
1665 <    ds.Transaction := nil;
1666 <  end;
1667 < end;
1668 <
1669 < procedure TIBTransaction.RemoveSQLObjects;
1670 < var
1671 <  i: Integer;
1672 < begin
1673 <  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1674 <    RemoveSQLObject(i);
1675 < end;
1676 <
1677 < procedure TIBTransaction.Rollback;
1678 < begin
1679 <  EndTransaction(TARollback, False);
1680 < end;
1681 <
1682 < procedure TIBTransaction.RollbackRetaining;
1683 < begin
1684 <  EndTransaction(TARollbackRetaining, False);
1685 < end;
1686 <
1687 < procedure TIBTransaction.SetActive(Value: Boolean);
1688 < begin
1689 <  if csReading in ComponentState then
1690 <    FStreamedActive := Value
1691 <  else
1692 <    if Value and not InTransaction then
1693 <      StartTransaction
1694 <    else
1695 <      if not Value and InTransaction then
1696 <        Rollback;
1697 < end;
1698 <
1699 < procedure TIBTransaction.SetDefaultAction(Value: TTransactionAction);
1700 < begin
1701 < (*  if (Value = taRollbackRetaining) and (GetIBClientVersion < 6) then
1702 <    IBError(ibxeIB60feature, [nil]);*)
1703 <  FDefaultAction := Value;
1704 < end;
1705 <
1706 < procedure TIBTransaction.SetDefaultDatabase(Value: TIBDatabase);
1707 < var
1708 <  i: integer;
1709 < begin
1710 <  if (FDefaultDatabase <> nil) and (FDefaultDatabase <> Value) then
1711 <  begin
1712 <    i := FDefaultDatabase.FindTransaction(self);
1713 <    if (i <> -1) then
1714 <      FDefaultDatabase.RemoveTransaction(i);
1715 <  end;
1716 <  if (Value <> nil) and (FDefaultDatabase <> Value) then
1717 <  begin
1718 <    Value.AddTransaction(Self);
1719 <    AddDatabase(Value);
1720 <    for i := 0 to FSQLObjects.Count - 1 do
1721 <      if (FSQLObjects[i] <> nil) and
1722 <         (TIBBase(FSQLObjects[i]).Database = nil) then
1723 <         SetObjectProp(TIBBase(FSQLObjects[i]).Owner, 'Database', Value);
1724 <  end;
1725 <  FDefaultDatabase := Value;
1726 < end;
1727 <
1728 < procedure TIBTransaction.SetHandle(Value: TISC_TR_HANDLE);
1729 < begin
1730 <  if (HandleIsShared) then
1731 <    EndTransaction(DefaultAction, True)
1732 <  else
1733 <    CheckNotInTransaction;
1734 <  FHandle := Value;
1735 <  FHandleIsShared := (Value <> nil);
1736 < end;
1737 <
1738 < procedure TIBTransaction.Notification( AComponent: TComponent;
1739 <                                        Operation: TOperation);
1740 < var
1741 <  i: Integer;
1742 < begin
1743 <  inherited Notification( AComponent, Operation);
1744 <  if (Operation = opRemove) and (AComponent = FDefaultDatabase) then
1745 <  begin
1746 <    i := FindDatabase(FDefaultDatabase);
1747 <    if (i <> -1) then
1748 <      RemoveDatabase(i);
1749 <    FDefaultDatabase := nil;
1750 <  end;
1751 < end;
1752 <
1753 < procedure TIBTransaction.SetIdleTimer(Value: Integer);
1754 < begin
1755 <  if Value < 0 then
1756 <    IBError(ibxeTimeoutNegative, [nil])
1757 <  else
1758 <    if (Value = 0) then
1759 <    begin
1760 <      FTimer.Enabled := False;
1761 <      FTimer.Interval := 0;
1762 <    end
1763 <    else
1764 <      if (Value > 0) then
1765 <      begin
1766 <        FTimer.Interval := Value;
1767 <        if not (csDesigning in ComponentState) then
1768 <          FTimer.Enabled := True;
1769 <      end;
1770 < end;
1771 <
1772 < procedure TIBTransaction.SetTRParams(Value: TStrings);
1773 < begin
1774 <  FTRParams.Assign(Value);
1775 < end;
1776 <
1777 < procedure TIBTransaction.StartTransaction;
1778 < var
1779 <  pteb: PISC_TEB_ARRAY;
1780 <  TPB: String;
1781 <  i: Integer;
1782 < begin
1783 <  CheckNotInTransaction;
1784 <  CheckDatabasesInList;
1785 <  for i := 0 to FDatabases.Count - 1 do
1786 <   if  FDatabases[i] <> nil then
1787 <   begin
1788 <     with TIBDatabase(FDatabases[i]) do
1789 <     if not Connected then
1790 <       if FStreamedConnected then
1791 <       begin
1792 <         Open;
1793 <         FStreamedConnected := False;
1794 <       end
1795 <       else
1796 <         IBError(ibxeDatabaseClosed, [nil]);
1797 <   end;
1798 <  if FTRParamsChanged then
1799 <  begin
1800 <    FTRParamsChanged := False;
1801 <    GenerateTPB(FTRParams, TPB, FTPBLength);
1802 <    if FTPBLength > 0 then
1803 <    begin
1804 <      IBAlloc(FTPB, 0, FTPBLength);
1805 <      Move(TPB[1], FTPB[0], FTPBLength);
1806 <    end;
1807 <  end;
1808 <
1809 <  pteb := nil;
1810 <  IBAlloc(pteb, 0, DatabaseCount * SizeOf(TISC_TEB));
1811 <  try
1812 <    for i := 0 to DatabaseCount - 1 do if Databases[i] <> nil then
1813 <    begin
1814 <      pteb^[i].db_handle := @(Databases[i].Handle);
1815 <      pteb^[i].tpb_length := FTPBLength;
1816 <      pteb^[i].tpb_address := FTPB;
1817 <    end;
1818 <    if Call(isc_start_multiple(StatusVector, @FHandle,
1819 <                               DatabaseCount, PISC_TEB(pteb)), False) > 0 then
1820 <    begin
1821 <      FHandle := nil;
1822 <      IBDataBaseError;
1823 <    end;
1824 <    if not (csDesigning in ComponentState) then
1825 <      MonitorHook.TRStart(Self);
1826 <  finally
1827 <    FreeMem(pteb);
1828 <  end;
1829 < end;
1830 <
1831 < procedure TIBTransaction.TimeoutTransaction(Sender: TObject);
1832 < begin
1833 <  if InTransaction then
1834 <  begin
1835 <    if FCanTimeout then
1836 <    begin
1837 <      EndTransaction(FDefaultAction, True);
1838 <      if Assigned(FOnIdleTimer) then
1839 <        FOnIdleTimer(Self);
1840 <    end
1841 <    else
1842 <      FCanTimeout := True;
1843 <  end;
1844 < end;
1845 <
1846 < procedure TIBTransaction.TRParamsChange(Sender: TObject);
1847 < begin
1848 <  FTRParamsChanged := True;
1849 < end;
1850 <
1851 < procedure TIBTransaction.TRParamsChanging(Sender: TObject);
1852 < begin
1853 <  EnsureNotInTransaction;
1854 <  CheckNotInTransaction;
1855 < end;
1856 <
1857 < { TIBBase }
1858 < constructor TIBBase.Create(AOwner: TObject);
1859 < begin
1860 <  FOwner := AOwner;
1861 < end;
1862 <
1863 < destructor TIBBase.Destroy;
1864 < begin
1865 <  SetDatabase(nil);
1866 <  SetTransaction(nil);
1867 <  inherited Destroy;
1868 < end;
1869 <
1870 < procedure TIBBase.CheckDatabase;
1871 < begin
1872 <  if (FDatabase = nil) then
1873 <    IBError(ibxeDatabaseNotAssigned, [nil]);
1874 <  FDatabase.CheckActive;
1875 < end;
1876 <
1877 < procedure TIBBase.CheckTransaction;
1878 < begin
1879 <  if FTransaction = nil then
1880 <    IBError(ibxeTransactionNotAssigned, [nil]);
1881 <  FTransaction.CheckInTransaction;
1882 < end;
1883 <
1884 < function TIBBase.GetDBHandle: PISC_DB_HANDLE;
1885 < begin
1886 <  CheckDatabase;
1887 <  result := @FDatabase.Handle;
1888 < end;
1889 <
1890 < function TIBBase.GetTRHandle: PISC_TR_HANDLE;
1891 < begin
1892 <  CheckTransaction;
1893 <  result := @FTransaction.Handle;
1894 < end;
1895 <
1896 < procedure TIBBase.DoAfterDatabaseConnect;
1897 < begin
1898 <  if assigned(FAfterDatabaseConnect) then
1899 <    AfterDatabaseConnect(self);
1900 < end;
1901 <
1902 < procedure TIBBase.DoBeforeDatabaseDisconnect;
1903 < begin
1904 <  if Assigned(BeforeDatabaseDisconnect) then
1905 <    BeforeDatabaseDisconnect(Self);
1906 < end;
1907 <
1908 < procedure TIBBase.DoAfterDatabaseDisconnect;
1909 < begin
1910 <  if Assigned(AfterDatabaseDisconnect) then
1911 <    AfterDatabaseDisconnect(Self);
1912 < end;
1913 <
1914 < procedure TIBBase.DoDatabaseFree;
1915 < begin
1916 <  if Assigned(OnDatabaseFree) then
1917 <    OnDatabaseFree(Self);
1918 <  SetDatabase(nil);
1919 <  SetTransaction(nil);
1920 < end;
1921 <
1922 < procedure TIBBase.DoBeforeTransactionEnd;
1923 < begin
1924 <  if Assigned(BeforeTransactionEnd) then
1925 <    BeforeTransactionEnd(Self);
1926 < end;
1927 <
1928 < procedure TIBBase.DoAfterTransactionEnd;
1929 < begin
1930 <  if Assigned(AfterTransactionEnd) then
1931 <    AfterTransactionEnd(Self);
1932 < end;
1933 <
1934 < procedure TIBBase.DoTransactionFree;
1935 < begin
1936 <  if Assigned(OnTransactionFree) then
1937 <    OnTransactionFree(Self);
1938 <  FTransaction := nil;
1939 < end;
1940 <
1941 < procedure TIBBase.SetDatabase(Value: TIBDatabase);
1942 < begin
1943 <  if (FDatabase <> nil) then
1944 <    FDatabase.RemoveSQLObject(FIndexInDatabase);
1945 <  FDatabase := Value;
1946 <  if (FDatabase <> nil) then
1947 <  begin
1948 <    FIndexInDatabase := FDatabase.AddSQLObject(Self);
1949 <    if (FTransaction = nil) then
1950 <      Transaction := FDatabase.FindDefaultTransaction;
1951 <  end;
1952 < end;
1953 <
1954 < procedure TIBBase.SetTransaction(Value: TIBTransaction);
1955 < begin
1956 <  if (FTransaction <> nil) then
1957 <    FTransaction.RemoveSQLObject(FIndexInTransaction);
1958 <  FTransaction := Value;
1959 <  if (FTransaction <> nil) then
1960 <  begin
1961 <    FIndexInTransaction := FTransaction.AddSQLObject(Self);
1962 <    if (FDatabase = nil) then
1963 <      Database := FTransaction.FindDefaultDatabase;
1964 <  end;
1965 < end;
1966 <
1967 < { GenerateDPB -
1968 <  Given a string containing a textual representation
1969 <  of the database parameters, generate a database
1970 <  parameter buffer, and return it and its length
1971 <  in DPB and DPBLength, respectively. }
1972 <
1973 < procedure GenerateDPB(sl: TStrings; var DPB: string; var DPBLength: Short);
1974 < var
1975 <  i, j, pval: Integer;
1976 <  DPBVal: UShort;
1977 <  ParamName, ParamValue: string;
1978 < begin
1979 <  { The DPB is initially empty, with the exception that
1980 <    the DPB version must be the first byte of the string. }
1981 <  DPBLength := 1;
1982 <  DPB := Char(isc_dpb_version1);
1983 <
1984 <  {Iterate through the textual database parameters, constructing
1985 <   a DPB on-the-fly }
1986 <  for i := 0 to sl.Count - 1 do
1987 <  begin
1988 <    { Get the parameter's name and value from the list,
1989 <      and make sure that the name is all lowercase with
1990 <      no leading 'isc_dpb_' prefix
1991 <    }
1992 <    if (Trim(sl.Names[i]) = '') then
1993 <      continue;
1994 <    ParamName := LowerCase(sl.Names[i]); {mbcs ok}
1995 <    ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
1996 <    if (Pos(DPBPrefix, ParamName) = 1) then {mbcs ok}
1997 <      Delete(ParamName, 1, Length(DPBPrefix));
1998 <     { We want to translate the parameter name to some Integer
1999 <       value. We do this by scanning through a list of known
2000 <       database parameter names (DPBConstantNames, defined above) }
2001 <    DPBVal := 0;
2002 <    { Find the parameter }
2003 <    for j := 1 to isc_dpb_last_dpb_constant do
2004 <      if (ParamName = DPBConstantNames[j]) then
2005 <      begin
2006 <        DPBVal := j;
2007 <        break;
2008 <      end;
2009 <     {  A database parameter either contains a string value (case 1)
2010 <       or an Integer value (case 2)
2011 <       or no value at all (case 3)
2012 <       or an error needs to be generated (case else)  }
2013 <    case DPBVal of
2014 <      isc_dpb_user_name, isc_dpb_password, isc_dpb_password_enc,
2015 <      isc_dpb_sys_user_name, isc_dpb_license, isc_dpb_encrypt_key,
2016 <      isc_dpb_lc_messages, isc_dpb_lc_ctype,
2017 <      isc_dpb_sql_role_name, isc_dpb_sql_dialect:
2018 <      begin
2019 <        if DPBVal = isc_dpb_sql_dialect then
2020 <          ParamValue[1] := Char(Ord(ParamValue[1]) - 48);
2021 <        DPB := DPB +
2022 <               Char(DPBVal) +
2023 <               Char(Length(ParamValue)) +
2024 <               ParamValue;
2025 <        Inc(DPBLength, 2 + Length(ParamValue));
2026 <      end;
2027 <      isc_dpb_num_buffers, isc_dpb_dbkey_scope, isc_dpb_force_write,
2028 <      isc_dpb_no_reserve, isc_dpb_damaged, isc_dpb_verify:
2029 <      begin
2030 <        DPB := DPB +
2031 <               Char(DPBVal) +
2032 <               #1 +
2033 <               Char(StrToInt(ParamValue));
2034 <        Inc(DPBLength, 3);
2035 <      end;
2036 <      isc_dpb_sweep:
2037 <      begin
2038 <        DPB := DPB +
2039 <               Char(DPBVal) +
2040 <               #1 +
2041 <               Char(isc_dpb_records);
2042 <        Inc(DPBLength, 3);
2043 <      end;
2044 <      isc_dpb_sweep_interval:
2045 <      begin
2046 <        pval := StrToInt(ParamValue);
2047 <        DPB := DPB +
2048 <               Char(DPBVal) +
2049 <               #4 +
2050 <               PChar(@pval)[0] +
2051 <               PChar(@pval)[1] +
2052 <               PChar(@pval)[2] +
2053 <               PChar(@pval)[3];
2054 <        Inc(DPBLength, 6);
2055 <      end;
2056 <      isc_dpb_activate_shadow, isc_dpb_delete_shadow, isc_dpb_begin_log,
2057 <      isc_dpb_quit_log:
2058 <      begin
2059 <        DPB := DPB +
2060 <               Char(DPBVal) +
2061 <               #1 + #0;
2062 <        Inc(DPBLength, 3);
2063 <      end;
2064 <      else
2065 <      begin
2066 <        if (DPBVal > 0) and
2067 <           (DPBVal <= isc_dpb_last_dpb_constant) then
2068 <          IBError(ibxeDPBConstantNotSupported, [DPBConstantNames[DPBVal]])
2069 <        else
2070 <          IBError(ibxeDPBConstantUnknownEx, [sl.Names[i]]);
2071 <      end;
2072 <    end;
2073 <  end;
2074 < end;
2075 <
2076 < { GenerateTPB -
2077 <  Given a string containing a textual representation
2078 <  of the transaction parameters, generate a transaction
2079 <  parameter buffer, and return it and its length in
2080 <  TPB and TPBLength, respectively. }
2081 < procedure GenerateTPB(sl: TStrings; var TPB: string; var TPBLength: Short);
2082 < var
2083 <  i, j, TPBVal, ParamLength: Integer;
2084 <  ParamName, ParamValue: string;
2085 < begin
2086 <  TPB := '';
2087 <  if (sl.Count = 0) then
2088 <    TPBLength := 0
2089 <  else
2090 <  begin
2091 <    TPBLength := sl.Count + 1;
2092 <    TPB := TPB + Char(isc_tpb_version3);
2093 <  end;
2094 <  for i := 0 to sl.Count - 1 do
2095 <  begin
2096 <    if (Trim(sl[i]) =  '') then
2097 <    begin
2098 <      Dec(TPBLength);
2099 <      Continue;
2100 <    end;
2101 <    if (Pos('=', sl[i]) = 0) then {mbcs ok}
2102 <      ParamName := LowerCase(sl[i]) {mbcs ok}
2103 <    else
2104 <    begin
2105 <      ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2106 <      ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2107 <    end;
2108 <    if (Pos(TPBPrefix, ParamName) = 1) then {mbcs ok}
2109 <      Delete(ParamName, 1, Length(TPBPrefix));
2110 <    TPBVal := 0;
2111 <    { Find the parameter }
2112 <    for j := 1 to isc_tpb_last_tpb_constant do
2113 <      if (ParamName = TPBConstantNames[j]) then
2114 <      begin
2115 <        TPBVal := j;
2116 <        break;
2117 <      end;
2118 <    { Now act on it }
2119 <    case TPBVal of
2120 <      isc_tpb_consistency, isc_tpb_exclusive, isc_tpb_protected,
2121 <      isc_tpb_concurrency, isc_tpb_shared, isc_tpb_wait, isc_tpb_nowait,
2122 <      isc_tpb_read, isc_tpb_write, isc_tpb_ignore_limbo,
2123 <      isc_tpb_read_committed, isc_tpb_rec_version, isc_tpb_no_rec_version:
2124 <        TPB := TPB + Char(TPBVal);
2125 <      isc_tpb_lock_read, isc_tpb_lock_write:
2126 <      begin
2127 <        TPB := TPB + Char(TPBVal);
2128 <        { Now set the string parameter }
2129 <        ParamLength := Length(ParamValue);
2130 <        Inc(TPBLength, ParamLength + 1);
2131 <        TPB := TPB + Char(ParamLength) + ParamValue;
2132 <      end;
2133 <      else
2134 <      begin
2135 <        if (TPBVal > 0) and
2136 <           (TPBVal <= isc_tpb_last_tpb_constant) then
2137 <          IBError(ibxeTPBConstantNotSupported, [TPBConstantNames[TPBVal]])
2138 <        else
2139 <          IBError(ibxeTPBConstantUnknownEx, [sl.Names[i]]);
2140 <      end;
2141 <    end;
2142 <  end;
2143 < end;
2144 <
2145 < end.
2146 <
2147 <
2148 <
2149 <
2150 <
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 > {$IF FPC_FULLVERSION >= 20700 }
39 > {$codepage UTF8}
40 > {$DEFINE HAS_ANSISTRING_CODEPAGE}
41 > {$ENDIF}
42 >
43 > interface
44 >
45 > uses
46 > {$IFDEF WINDOWS }
47 >  Windows,
48 > {$ELSE}
49 >  unix,
50 > {$ENDIF}
51 >  SysUtils, Classes, FPTimer, IBHeader, IBExternals, DB,
52 >  IB, CustApp;
53 >
54 > const
55 >  DPBPrefix = 'isc_dpb_';
56 >  DPBConstantNames: array[1..isc_dpb_last_dpb_constant] of string = (
57 >    'cdd_pathname',
58 >    'allocation',
59 >    'journal',
60 >    'page_size',
61 >    'num_buffers',
62 >    'buffer_length',
63 >    'debug',
64 >    'garbage_collect',
65 >    'verify',
66 >    'sweep',
67 >    'enable_journal',
68 >    'disable_journal',
69 >    'dbkey_scope',
70 >    'number_of_users',
71 >    'trace',
72 >    'no_garbage_collect',
73 >    'damaged',
74 >    'license',
75 >    'sys_user_name',
76 >    'encrypt_key',
77 >    'activate_shadow',
78 >    'sweep_interval',
79 >    'delete_shadow',
80 >    'force_write',
81 >    'begin_log',
82 >    'quit_log',
83 >    'no_reserve',
84 >    'user_name',
85 >    'password',
86 >    'password_enc',
87 >    'sys_user_name_enc',
88 >    'interp',
89 >    'online_dump',
90 >    'old_file_size',
91 >    'old_num_files',
92 >    'old_file',
93 >    'old_start_page',
94 >    'old_start_seqno',
95 >    'old_start_file',
96 >    'drop_walfile',
97 >    'old_dump_id',
98 >    'wal_backup_dir',
99 >    'wal_chkptlen',
100 >    'wal_numbufs',
101 >    'wal_bufsize',
102 >    'wal_grp_cmt_wait',
103 >    'lc_messages',
104 >    'lc_ctype',
105 >    'cache_manager',
106 >    'shutdown',
107 >    'online',
108 >    'shutdown_delay',
109 >    'reserved',
110 >    'overwrite',
111 >    'sec_attach',
112 >    'disable_wal',
113 >    'connect_timeout',
114 >    'dummy_packet_interval',
115 >    'gbak_attach',
116 >    'sql_role_name',
117 >    'set_page_buffers',
118 >    'working_directory',
119 >    'sql_dialect',
120 >    'set_db_readonly',
121 >    'set_db_sql_dialect',
122 >    'gfix_attach',
123 >    'gstat_attach'
124 >  );
125 >
126 >  TPBPrefix = 'isc_tpb_';
127 >  TPBConstantNames: array[1..isc_tpb_last_tpb_constant] of string = (
128 >    'consistency',
129 >    'concurrency',
130 >    'shared',
131 >    'protected',
132 >    'exclusive',
133 >    'wait',
134 >    'nowait',
135 >    'read',
136 >    'write',
137 >    'lock_read',
138 >    'lock_write',
139 >    'verb_time',
140 >    'commit_time',
141 >    'ignore_limbo',
142 >    'read_committed',
143 >    'autocommit',
144 >    'rec_version',
145 >    'no_rec_version',
146 >    'restart_requests',
147 >    'no_auto_undo'
148 >  );
149 >
150 > type
151 >
152 >  TIBDatabase = class;
153 >  TIBTransaction = class;
154 >  TIBBase = class;
155 >
156 >  TIBDatabaseLoginEvent = procedure(Database: TIBDatabase;
157 >    LoginParams: TStrings) of object;
158 >
159 >  TIBFileName = type string;
160 >  { TIBDatabase }
161 >  TIBDataBase = class(TCustomConnection)
162 >  private
163 >    FAllowStreamedConnected: boolean;
164 >    FHiddenPassword: string;
165 >    FIBLoaded: Boolean;
166 >    FOnLogin: TIBDatabaseLoginEvent;
167 >    FSQLHourGlass: Boolean;
168 >    FTraceFlags: TTraceFlags;
169 >    FDBSQLDialect: Integer;
170 >    FSQLDialect: Integer;
171 >    FOnDialectDowngradeWarning: TNotifyEvent;
172 >    FCanTimeout: Boolean;
173 >    FSQLObjects: TList;
174 >    FTransactions: TList;
175 >    FDBName: TIBFileName;
176 >    FDBParams: TStrings;
177 >    FDBParamsChanged: Boolean;
178 >    FDPB: PChar;
179 >    FDPBLength: Short;
180 >    FHandle: TISC_DB_HANDLE;
181 >    FHandleIsShared: Boolean;
182 >    FOnIdleTimer: TNotifyEvent;
183 >    FDefaultTransaction: TIBTransaction;
184 >    FInternalTransaction: TIBTransaction;
185 >    FStreamedConnected: Boolean;
186 >    FTimer: TFPTimer;
187 >    FUserNames: TStringList;
188 >    FDataSets: TList;
189 >    FLoginCalled: boolean;
190 >    FDefaultCharSetName: RawByteString;
191 >    FDefaultCharSetID: integer;
192 >    {$IFDEF HAS_ANSISTRING_CODEPAGE}
193 >    FDefaultCodePage: TSystemCodePage;
194 >    {$ENDIF}
195 >    FUseDefaultSystemCodePage: boolean;
196 >    procedure EnsureInactive;
197 >    function GetDBSQLDialect: Integer;
198 >    function GetSQLDialect: Integer;
199 >    procedure SetSQLDialect(const Value: Integer);
200 >    procedure ValidateClientSQLDialect;
201 >    procedure DBParamsChange(Sender: TObject);
202 >    procedure DBParamsChanging(Sender: TObject);
203 >    function GetSQLObject(Index: Integer): TIBBase;
204 >    function GetSQLObjectCount: Integer;
205 >    function GetDBParamByDPB(const Idx: Integer): String;
206 >    function GetIdleTimer: Integer;
207 >    function GetTransaction(Index: Integer): TIBTransaction;
208 >    function GetTransactionCount: Integer;
209 >    function Login(var aDatabaseName: string): Boolean;
210 >    procedure SetDatabaseName(const Value: TIBFileName);
211 >    procedure SetDBParamByDPB(const Idx: Integer; Value: String);
212 >    procedure SetDBParams(Value: TStrings);
213 >    procedure SetDefaultTransaction(Value: TIBTransaction);
214 >    procedure SetIdleTimer(Value: Integer);
215 >    procedure TimeoutConnection(Sender: TObject);
216 >    function GetIsReadOnly: Boolean;
217 >    function AddSQLObject(ds: TIBBase): Integer;
218 >    procedure RemoveSQLObject(Idx: Integer);
219 >    procedure RemoveSQLObjects;
220 >    procedure InternalClose(Force: Boolean);
221 >
222 >  protected
223 >    procedure DoConnect; override;
224 >    procedure DoDisconnect; override;
225 >    function GetConnected: Boolean; override;
226 >    procedure CheckStreamConnect;
227 >    procedure HandleException(Sender: TObject);
228 >    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
229 >    function GetDataset(Index : longint) : TDataset; override;
230 >    function GetDataSetCount : Longint; override;
231 >    procedure ReadState(Reader: TReader); override;
232 >    procedure SetConnected (Value : boolean); override;
233 >  public
234 >    constructor Create(AOwner: TComponent); override;
235 >    destructor Destroy; override;
236 >    procedure ApplyUpdates(const DataSets: array of TDataSet);
237 >    procedure CloseDataSets;
238 >    procedure CheckActive;
239 >    procedure CheckInactive;
240 >    procedure CreateDatabase;
241 >    procedure DropDatabase;
242 >    procedure ForceClose;
243 >    procedure GetFieldNames(const TableName: string; List: TStrings);
244 >    procedure GetTableNames(List: TStrings; SystemTables: Boolean = False);
245 >    function IndexOfDBConst(st: String): Integer;
246 >    function TestConnected: Boolean;
247 >    procedure CheckDatabaseName;
248 >    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
249 >    function AddTransaction(TR: TIBTransaction): Integer;
250 >    function FindTransaction(TR: TIBTransaction): Integer;
251 >    function FindDefaultTransaction(): TIBTransaction;
252 >    procedure RemoveTransaction(Idx: Integer);
253 >    procedure RemoveTransactions;
254 >    procedure SetHandle(Value: TISC_DB_HANDLE);
255 >
256 >    property Handle: TISC_DB_HANDLE read FHandle;
257 >    property IsReadOnly: Boolean read GetIsReadOnly;
258 >    property DBParamByDPB[const Idx: Integer]: String read GetDBParamByDPB
259 >                                                      write SetDBParamByDPB;
260 >    property SQLObjectCount: Integer read GetSQLObjectCount;
261 >    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
262 >    property HandleIsShared: Boolean read FHandleIsShared;
263 >    property TransactionCount: Integer read GetTransactionCount;
264 >    property Transactions[Index: Integer]: TIBTransaction read GetTransaction;
265 >    property InternalTransaction: TIBTransaction read FInternalTransaction;
266 >    property DefaultCharSetName: RawByteString read FDefaultCharSetName;
267 >    property DefaultCharSetID: integer read FDefaultCharSetID;
268 >    {$IFDEF HAS_ANSISTRING_CODEPAGE}
269 >    property DefaultCodePage: TSystemCodePage read FDefaultCodePage;
270 >    {$ENDIF}
271 >
272 >  published
273 >    property Connected;
274 >    property AllowStreamedConnected: boolean read FAllowStreamedConnected
275 >             write FAllowStreamedConnected;
276 >    property DatabaseName: TIBFileName read FDBName write SetDatabaseName;
277 >    property Params: TStrings read FDBParams write SetDBParams;
278 >    property LoginPrompt default True;
279 >    property DefaultTransaction: TIBTransaction read FDefaultTransaction
280 >                                                 write SetDefaultTransaction;
281 >    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer;
282 >    property SQLDialect : Integer read GetSQLDialect write SetSQLDialect default 3;
283 >    property SQLHourGlass: Boolean read FSQLHourGlass write FSQLHourGlass default true;
284 >    property DBSQLDialect : Integer read FDBSQLDialect;
285 >    property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
286 >    property UseDefaultSystemCodePage: boolean read FUseDefaultSystemCodePage
287 >                                               write FUseDefaultSystemCodePage;
288 >    property AfterConnect;
289 >    property AfterDisconnect;
290 >    property BeforeConnect;
291 >    property BeforeDisconnect;
292 >    property OnLogin: TIBDatabaseLoginEvent read FOnLogin write FOnLogin;
293 >    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
294 >    property OnDialectDowngradeWarning: TNotifyEvent read FOnDialectDowngradeWarning write FOnDialectDowngradeWarning;
295 >  end;
296 >
297 >  { TIBTransaction }
298 >
299 >  TTransactionAction         = (TARollback, TACommit, TARollbackRetaining, TACommitRetaining);
300 >
301 >  TIBTransaction = class(TComponent)
302 >  private
303 >    FAfterDelete: TNotifyEvent;
304 >    FAfterEdit: TNotifyEvent;
305 >    FAfterExecQuery: TNotifyEvent;
306 >    FAfterInsert: TNotifyEvent;
307 >    FAfterPost: TNotifyEvent;
308 >    FAfterTransactionEnd: TNotifyEvent;
309 >    FBeforeTransactionEnd: TNotifyEvent;
310 >    FIBLoaded: Boolean;
311 >    FCanTimeout         : Boolean;
312 >    FDatabases          : TList;
313 >    FOnStartTransaction: TNotifyEvent;
314 >    FSQLObjects         : TList;
315 >    FDefaultDatabase    : TIBDatabase;
316 >    FHandle             : TISC_TR_HANDLE;
317 >    FHandleIsShared     : Boolean;
318 >    FOnIdleTimer          : TNotifyEvent;
319 >    FStreamedActive     : Boolean;
320 >    FTPB                : PChar;
321 >    FTPBLength          : Short;
322 >    FTimer              : TFPTimer;
323 >    FDefaultAction      : TTransactionAction;
324 >    FTRParams           : TStrings;
325 >    FTRParamsChanged    : Boolean;
326 >    FInEndTransaction   : boolean;
327 >    FEndAction          : TTransactionAction;
328 >    procedure DoBeforeTransactionEnd;
329 >    procedure DoAfterTransactionEnd;
330 >    procedure DoOnStartTransaction;
331 >    procedure DoAfterExecQuery(Sender: TObject);
332 >    procedure DoAfterEdit(Sender: TObject);
333 >    procedure DoAfterDelete(Sender: TObject);
334 >    procedure DoAfterInsert(Sender: TObject);
335 >    procedure DoAfterPost(Sender: TObject);
336 >    procedure EnsureNotInTransaction;
337 >    procedure EndTransaction(Action: TTransactionAction; Force: Boolean);
338 >    function GetDatabase(Index: Integer): TIBDatabase;
339 >    function GetDatabaseCount: Integer;
340 >    function GetSQLObject(Index: Integer): TIBBase;
341 >    function GetSQLObjectCount: Integer;
342 >    function GetInTransaction: Boolean;
343 >    function GetIdleTimer: Integer;
344 >    procedure BeforeDatabaseDisconnect(DB: TIBDatabase);
345 >    procedure SetActive(Value: Boolean);
346 >    procedure SetDefaultAction(Value: TTransactionAction);
347 >    procedure SetDefaultDatabase(Value: TIBDatabase);
348 >    procedure SetIdleTimer(Value: Integer);
349 >    procedure SetTRParams(Value: TStrings);
350 >    procedure TimeoutTransaction(Sender: TObject);
351 >    procedure TRParamsChange(Sender: TObject);
352 >    procedure TRParamsChanging(Sender: TObject);
353 >    function AddSQLObject(ds: TIBBase): Integer;
354 >    procedure RemoveSQLObject(Idx: Integer);
355 >    procedure RemoveSQLObjects;
356 >
357 >  protected
358 >    procedure Loaded; override;
359 >    procedure SetHandle(Value: TISC_TR_HANDLE);
360 >    procedure Notification( AComponent: TComponent; Operation: TOperation); override;
361 >
362 >  public
363 >    constructor Create(AOwner: TComponent); override;
364 >    destructor Destroy; override;
365 >    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
366 >    procedure Commit;
367 >    procedure CommitRetaining;
368 >    procedure Rollback;
369 >    procedure RollbackRetaining;
370 >    procedure StartTransaction;
371 >    procedure CheckInTransaction;
372 >    procedure CheckNotInTransaction;
373 >
374 >    function AddDatabase(db: TIBDatabase): Integer;
375 >    function FindDatabase(db: TIBDatabase): Integer;
376 >    function FindDefaultDatabase: TIBDatabase;
377 >    function GetEndAction: TTransactionAction;
378 >    procedure RemoveDatabase(Idx: Integer);
379 >    procedure RemoveDatabases;
380 >    procedure CheckDatabasesInList;
381 >
382 >    property DatabaseCount: Integer read GetDatabaseCount;
383 >    property Databases[Index: Integer]: TIBDatabase read GetDatabase;
384 >    property SQLObjectCount: Integer read GetSQLObjectCount;
385 >    property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
386 >    property Handle: TISC_TR_HANDLE read FHandle;
387 >    property HandleIsShared: Boolean read FHandleIsShared;
388 >    property InTransaction: Boolean read GetInTransaction;
389 >    property TPB: PChar read FTPB;
390 >    property TPBLength: Short read FTPBLength;
391 >  published
392 >    property Active: Boolean read GetInTransaction write SetActive;
393 >    property DefaultDatabase: TIBDatabase read FDefaultDatabase
394 >                                           write SetDefaultDatabase;
395 >    property IdleTimer: Integer read GetIdleTimer write SetIdleTimer default 0;
396 >    property DefaultAction: TTransactionAction read FDefaultAction write SetDefaultAction default taCommit;
397 >    property Params: TStrings read FTRParams write SetTRParams;
398 >    property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
399 >    property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd
400 >                                             write FBeforeTransactionEnd;
401 >    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd
402 >                                            write FAfterTransactionEnd;
403 >    property OnStartTransaction: TNotifyEvent read FOnStartTransaction
404 >                                              write FOnStartTransaction;
405 >    property AfterExecQuery: TNotifyEvent read FAfterExecQuery
406 >                                              write FAfterExecQuery;
407 >    property AfterEdit: TNotifyEvent read FAfterEdit write FAfterEdit;
408 >    property AfterDelete: TNotifyEvent read FAfterDelete write FAfterDelete;
409 >    property AfterInsert: TNotifyEvent read FAfterInsert write FAfterInsert;
410 >    property AfterPost: TNotifyEvent read FAfterPost write FAfterPost;
411 >  end;
412 >
413 >  TTransactionEndEvent = procedure(Sender:TObject; Action: TTransactionAction) of object;
414 >  TBeforeDatabaseConnectEvent = procedure (Sender: TObject; DBParams: TStrings;
415 >                              var DBName: string) of object;
416 >
417 >  { TIBBase }
418 >
419 >  { Virtually all components in IB are "descendents" of TIBBase.
420 >    It is to more easily manage the database and transaction
421 >    connections. }
422 >  TIBBase = class(TObject)
423 >  protected
424 >    FBeforeDatabaseConnect: TBeforeDatabaseConnectEvent;
425 >    FDatabase: TIBDatabase;
426 >    FIndexInDatabase: Integer;
427 >    FTransaction: TIBTransaction;
428 >    FIndexInTransaction: Integer;
429 >    FOwner: TObject;
430 >    FBeforeDatabaseDisconnect: TNotifyEvent;
431 >    FAfterDatabaseDisconnect: TNotifyEvent;
432 >    FAfterDatabaseConnect: TNotifyEvent;
433 >    FOnDatabaseFree: TNotifyEvent;
434 >    FBeforeTransactionEnd: TTransactionEndEvent;
435 >    FAfterTransactionEnd: TNotifyEvent;
436 >    FOnTransactionFree: TNotifyEvent;
437 >
438 >    procedure DoBeforeDatabaseConnect(DBParams: TStrings;
439 >                              var DBName: string); virtual;
440 >    procedure DoAfterDatabaseConnect; virtual;
441 >    procedure DoBeforeDatabaseDisconnect; virtual;
442 >    procedure DoAfterDatabaseDisconnect; virtual;
443 >    procedure DoDatabaseFree; virtual;
444 >    procedure DoBeforeTransactionEnd(Action: TTransactionAction); virtual;
445 >    procedure DoAfterTransactionEnd; virtual;
446 >    procedure DoTransactionFree; virtual;
447 >    function GetDBHandle: PISC_DB_HANDLE; virtual;
448 >    function GetTRHandle: PISC_TR_HANDLE; virtual;
449 >    procedure SetDatabase(Value: TIBDatabase); virtual;
450 >    procedure SetTransaction(Value: TIBTransaction); virtual;
451 >  public
452 >    constructor Create(AOwner: TObject);
453 >    destructor Destroy; override;
454 >    procedure CheckDatabase; virtual;
455 >    procedure CheckTransaction; virtual;
456 >    procedure DoAfterExecQuery(Sender: TObject); virtual;
457 >    procedure DoAfterEdit(Sender: TObject); virtual;
458 >    procedure DoAfterDelete(Sender: TObject); virtual;
459 >    procedure DoAfterInsert(Sender: TObject); virtual;
460 >    procedure DoAfterPost(Sender: TObject); virtual;
461 >    function GetDefaultCharSetName: RawByteString;
462 >    function GetDefaultCharSetID: cardinal;
463 >    procedure HandleException(Sender: TObject);
464 >    procedure SetCursor;
465 >    procedure RestoreCursor;
466 >  public
467 >    property BeforeDatabaseConnect: TBeforeDatabaseConnectEvent read FBeforeDatabaseConnect
468 >                                                 write FBeforeDatabaseConnect;
469 >    property AfterDatabaseConnect: TNotifyEvent read FAfterDatabaseConnect
470 >                                                write FAfterDatabaseConnect;
471 >    property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect
472 >                                                   write FBeforeDatabaseDisconnect;
473 >    property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect
474 >                                                  write FAfterDatabaseDisconnect;
475 >    property OnDatabaseFree: TNotifyEvent read FOnDatabaseFree write FOnDatabaseFree;
476 >    property BeforeTransactionEnd: TTransactionEndEvent read FBeforeTransactionEnd write FBeforeTransactionEnd;
477 >    property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd write FAfterTransactionEnd;
478 >    property OnTransactionFree: TNotifyEvent read FOnTransactionFree write FOnTransactionFree;
479 >    property Database: TIBDatabase read FDatabase
480 >                                    write SetDatabase;
481 >    property DBHandle: PISC_DB_HANDLE read GetDBHandle;
482 >    property Owner: TObject read FOwner;
483 >    property TRHandle: PISC_TR_HANDLE read GetTRHandle;
484 >    property Transaction: TIBTransaction read FTransaction
485 >                                          write SetTransaction;
486 >  end;
487 >
488 > procedure GenerateDPB(sl: TStrings; var DPB: string; var DPBLength: Short);
489 > procedure GenerateTPB(sl: TStrings; var TPB: string; var TPBLength: Short);
490 >
491 >
492 > implementation
493 >
494 > uses IBIntf, IBSQLMonitor, IBCustomDataSet, IBDatabaseInfo, IBSQL, IBUtils,
495 >     typInfo, IBCodePage;
496 >
497 > { TIBDatabase }
498 >
499 > constructor TIBDataBase.Create(AOwner: TComponent);
500 > begin
501 >  inherited Create(AOwner);
502 >  FIBLoaded := False;
503 >  CheckIBLoaded;
504 >  FIBLoaded := True;
505 >  LoginPrompt := True;
506 >  FSQLObjects := TList.Create;
507 >  FTransactions := TList.Create;
508 >  FDBName := '';
509 >  FDBParams := TStringList.Create;
510 >  FSQLHourGlass := true;
511 >  if (AOwner <> nil) and
512 >     (AOwner is TCustomApplication) and
513 >     TCustomApplication(AOWner).ConsoleApplication then
514 >    LoginPrompt := false;
515 >  {$IFDEF HAS_ANSISTRING_CODEPAGE}
516 >  FDefaultCodePage := CP_NONE;
517 >  {$ENDIF}
518 >  FDBParamsChanged := True;
519 >  TStringList(FDBParams).OnChange := DBParamsChange;
520 >  TStringList(FDBParams).OnChanging := DBParamsChanging;
521 >  FDPB := nil;
522 >  FHandle := nil;
523 >  FUserNames := nil;
524 >  FInternalTransaction := TIBTransaction.Create(self);
525 >  FInternalTransaction.DefaultDatabase := Self;
526 >  FTimer := TFPTimer.Create(Self);
527 >  FTimer.Enabled := False;
528 >  FTimer.Interval := 0;
529 >  FTimer.OnTimer := TimeoutConnection;
530 >  FDBSQLDialect := 1;
531 >  FSQLDialect := 3;
532 >  FTraceFlags := [];
533 >  FDataSets := TList.Create;
534 >  CheckStreamConnect;
535 > end;
536 >
537 > destructor TIBDataBase.Destroy;
538 > var
539 >  i: Integer;
540 > begin
541 >  if FIBLoaded then
542 >  begin
543 >    IdleTimer := 0;
544 >    if FHandle <> nil then
545 >      ForceClose;
546 >    for i := 0 to FSQLObjects.Count - 1 do
547 >      if FSQLObjects[i] <> nil then
548 >        SQLObjects[i].DoDatabaseFree;
549 >    RemoveSQLObjects;
550 >    RemoveTransactions;
551 >    FInternalTransaction.Free;
552 >    FreeMem(FDPB);
553 >    FDPB := nil;
554 >    FDBParams.Free;
555 >    FSQLObjects.Free;
556 >    FUserNames.Free;
557 >    FTransactions.Free;
558 >  end;
559 >  FDataSets.Free;
560 >  inherited Destroy;
561 > end;
562 >
563 > function TIBDataBase.Call(ErrCode: ISC_STATUS; RaiseError: Boolean
564 >   ): ISC_STATUS;
565 > begin
566 >  result := ErrCode;
567 >  FCanTimeout := False;
568 >  if RaiseError and (ErrCode > 0) then
569 >    IBDataBaseError;
570 > end;
571 >
572 > procedure TIBDataBase.CheckActive;
573 > begin
574 >  if StreamedConnected and (not Connected) then
575 >    Loaded;
576 >  if FHandle = nil then
577 >    IBError(ibxeDatabaseClosed, [nil]);
578 > end;
579 >
580 > procedure TIBDataBase.EnsureInactive;
581 > begin
582 >  if csDesigning in ComponentState then
583 >  begin
584 >    if FHandle <> nil then
585 >      Close;
586 >  end
587 > end;
588 >
589 > procedure TIBDataBase.CheckInactive;
590 > begin
591 >  if FHandle <> nil then
592 >    IBError(ibxeDatabaseOpen, [nil]);
593 > end;
594 >
595 > procedure TIBDataBase.CheckDatabaseName;
596 > begin
597 >  if (Trim(FDBName) = '') then
598 >    IBError(ibxeDatabaseNameMissing, [nil]);
599 > end;
600 >
601 > function TIBDataBase.AddSQLObject(ds: TIBBase): Integer;
602 > begin
603 >  result := 0;
604 >  if (ds.Owner is TIBCustomDataSet) then
605 >    FDataSets.Add(ds.Owner);
606 >  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
607 >    Inc(result);
608 >  if (result = FSQLObjects.Count) then
609 >    FSQLObjects.Add(ds)
610 >  else
611 >    FSQLObjects[result] := ds;
612 > end;
613 >
614 > function TIBDataBase.AddTransaction(TR: TIBTransaction): Integer;
615 > begin
616 >  result := FindTransaction(TR);
617 >  if result <> -1 then
618 >  begin
619 >    result := -1;
620 >    exit;
621 >  end;
622 >  result := 0;
623 >  while (result < FTransactions.Count) and (FTransactions[result] <> nil) do
624 >    Inc(result);
625 >  if (result = FTransactions.Count) then
626 >    FTransactions.Add(TR)
627 >  else
628 >    FTransactions[result] := TR;
629 > end;
630 >
631 > procedure TIBDataBase.DoDisconnect;
632 > begin
633 >  if Connected then
634 >    InternalClose(False);
635 >  FDBSQLDialect := 1;
636 >  FDefaultCharSetName := '';
637 >  FDefaultCharSetID := 0;
638 >  {$IFDEF HAS_ANSISTRING_CODEPAGE}
639 >  FDefaultCodePage := CP_NONE;
640 >  {$ENDIF}
641 > end;
642 >
643 > procedure TIBDataBase.CreateDatabase;
644 > var
645 >  tr_handle: TISC_TR_HANDLE;
646 > begin
647 >  CheckInactive;
648 >  tr_handle := nil;
649 >  Call(
650 >    isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0,
651 >                               PChar('CREATE DATABASE ''' + FDBName + ''' ' + {do not localize}
652 >                               Params.Text), SQLDialect, nil),
653 >    True);
654 > end;
655 >
656 > procedure TIBDataBase.DropDatabase;
657 > begin
658 >  CheckActive;
659 >  Call(isc_drop_database(StatusVector, @FHandle), True);
660 > end;
661 >
662 > procedure TIBDataBase.DBParamsChange(Sender: TObject);
663 > begin
664 >  FDBParamsChanged := True;
665 > end;
666 >
667 > procedure TIBDataBase.DBParamsChanging(Sender: TObject);
668 > begin
669 >  EnsureInactive;
670 >  CheckInactive;
671 > end;
672 >
673 > function TIBDataBase.FindTransaction(TR: TIBTransaction): Integer;
674 > var
675 >  i: Integer;
676 > begin
677 >  result := -1;
678 >  for i := 0 to FTransactions.Count - 1 do
679 >    if TR = Transactions[i] then
680 >    begin
681 >      result := i;
682 >      break;
683 >    end;
684 > end;
685 >
686 > function TIBDataBase.FindDefaultTransaction: TIBTransaction;
687 > var
688 >  i: Integer;
689 > begin
690 >  result := FDefaultTransaction;
691 >  if result = nil then
692 >  begin
693 >    for i := 0 to FTransactions.Count - 1 do
694 >      if (Transactions[i] <> nil) and
695 >        (TIBTransaction(Transactions[i]).DefaultDatabase = self) and
696 >        (TIBTransaction(Transactions[i]) <> FInternalTransaction) then
697 >       begin
698 >         result := TIBTransaction(Transactions[i]);
699 >         break;
700 >       end;
701 >  end;
702 > end;
703 >
704 > procedure TIBDataBase.ForceClose;
705 > begin
706 >  if Connected then
707 >    InternalClose(True);
708 > end;
709 >
710 > function TIBDataBase.GetConnected: Boolean;
711 > begin
712 >  result := FHandle <> nil;
713 > end;
714 >
715 > function TIBDataBase.GetSQLObject(Index: Integer): TIBBase;
716 > begin
717 >  result := FSQLObjects[Index];
718 > end;
719 >
720 > function TIBDataBase.GetSQLObjectCount: Integer;
721 > var
722 >  i: Integer;
723 > begin
724 >  result := 0;
725 >  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
726 >    Inc(result);
727 > end;
728 >
729 > function TIBDataBase.GetDBParamByDPB( const Idx: Integer): String;
730 > var
731 >  ConstIdx, EqualsIdx: Integer;
732 > begin
733 >  if (Idx > 0) and (Idx <= isc_dpb_last_dpb_constant) then
734 >  begin
735 >    ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
736 >    if ConstIdx = -1 then
737 >      result := ''
738 >    else
739 >    begin
740 >      result := Params[ConstIdx];
741 >      EqualsIdx := Pos('=', result); {mbcs ok}
742 >      if EqualsIdx = 0 then
743 >        result := ''
744 >      else
745 >        result := Copy(result, EqualsIdx + 1, Length(result));
746 >    end;
747 >  end
748 >  else
749 >    result := '';
750 > end;
751 >
752 > function TIBDataBase.GetIdleTimer: Integer;
753 > begin
754 >  result := FTimer.Interval;
755 > end;
756 >
757 > function TIBDataBase.GetTransaction(Index: Integer): TIBTransaction;
758 > begin
759 >  result := FTransactions[Index];
760 > end;
761 >
762 > function TIBDataBase.GetTransactionCount: Integer;
763 > var
764 >  i: Integer;
765 > begin
766 >  result := 0;
767 >  for i := 0 to FTransactions.Count - 1 do
768 >    if FTransactions[i] <> nil then
769 >      Inc(result);
770 > end;
771 >
772 > function TIBDataBase.IndexOfDBConst(st: String): Integer;
773 > var
774 >  i, pos_of_str: Integer;
775 > begin
776 >  result := -1;
777 >  for i := 0 to Params.Count - 1 do
778 >  begin
779 >    pos_of_str := Pos(st, AnsiLowerCase(Params[i])); {mbcs ok}
780 >    if (pos_of_str = 1) or (pos_of_str = Length(DPBPrefix) + 1) then
781 >    begin
782 >      result := i;
783 >      break;
784 >    end;
785 >  end;
786 > end;
787 >
788 > procedure TIBDataBase.InternalClose(Force: Boolean);
789 > var
790 >  i: Integer;
791 > begin
792 >  CheckActive;
793 >  { Tell all connected transactions that we're disconnecting.
794 >    This is so transactions can commit/rollback, accordingly
795 >  }
796 >  for i := 0 to FTransactions.Count - 1 do
797 >  begin
798 >    try
799 >      if FTransactions[i] <> nil then
800 >        Transactions[i].BeforeDatabaseDisconnect(Self);
801 >    except
802 >      if not Force then
803 >        raise;
804 >    end;
805 >  end;
806 >  for i := 0 to FSQLObjects.Count - 1 do
807 >  begin
808 >    try
809 >      if FSQLObjects[i] <> nil then
810 >        SQLObjects[i].DoBeforeDatabaseDisconnect;
811 >    except
812 >      if not Force then
813 >        raise;
814 >    end;
815 >  end;
816 >
817 >  if (not HandleIsShared) and
818 >     (Call(isc_detach_database(StatusVector, @FHandle), False) > 0) and
819 >     (not Force) then
820 >    IBDataBaseError
821 >  else
822 >  begin
823 >    FHandle := nil;
824 >    FHandleIsShared := False;
825 >  end;
826 >
827 >  if not (csDesigning in ComponentState) then
828 >    MonitorHook.DBDisconnect(Self);
829 >
830 >  for i := 0 to FSQLObjects.Count - 1 do
831 >    if FSQLObjects[i] <> nil then
832 >      SQLObjects[i].DoAfterDatabaseDisconnect;
833 > end;
834 >
835 > procedure TIBDataBase.CheckStreamConnect;
836 > var
837 >  i: integer;
838 > begin
839 >  try
840 >    if not (csDesigning in ComponentState) and StreamedConnected and (not Connected) then
841 >    begin
842 >      for i := 0 to FTransactions.Count - 1 do
843 >        if  FTransactions[i] <> nil then
844 >        begin
845 >          with TIBTransaction(FTransactions[i]) do
846 >            if not Active then
847 >              if FStreamedActive and not InTransaction then
848 >              begin
849 >                StartTransaction;
850 >                FStreamedActive := False;
851 >              end;
852 >        end;
853 >      if (FDefaultTransaction <> nil) and
854 >         (FDefaultTransaction.FStreamedActive) and
855 >         (not FDefaultTransaction.InTransaction) then
856 >        FDefaultTransaction.StartTransaction;
857 >      FStreamedConnected := False;
858 >    end;
859 >  except
860 >    if csDesigning in ComponentState then
861 >      HandleException(Self)
862 >    else
863 >      raise;
864 >  end;
865 > end;
866 >
867 > procedure TIBDataBase.HandleException(Sender: TObject);
868 > var aParent: TComponent;
869 > begin
870 >  aParent := Owner;
871 >  while aParent <> nil do
872 >  begin
873 >    if aParent is TCustomApplication then
874 >    begin
875 >      TCustomApplication(aParent).HandleException(Sender);
876 >      Exit;
877 >    end;
878 >    aParent := aParent.Owner;
879 >  end;
880 >  SysUtils.ShowException(ExceptObject,ExceptAddr);
881 > end;
882 >
883 > procedure TIBDataBase.Notification(AComponent: TComponent;
884 >   Operation: TOperation);
885 > var
886 >  i: Integer;
887 > begin
888 >  inherited Notification( AComponent, Operation);
889 >  if (Operation = opRemove) and (AComponent = FDefaultTransaction) then
890 >  begin
891 >    i := FindTransaction(FDefaultTransaction);
892 >    if (i <> -1) then
893 >      RemoveTransaction(i);
894 >    FDefaultTransaction := nil;
895 >  end;
896 > end;
897 >
898 >  function TIBDataBase.Login(var aDatabaseName: string): Boolean;
899 > var
900 >  IndexOfUser, IndexOfPassword: Integer;
901 >  Username, Password, OldPassword: String;
902 >  LoginParams: TStrings;
903 >
904 >  procedure HidePassword;
905 >  var
906 >    I: Integer;
907 >    IndexAt: Integer;
908 >  begin
909 >    IndexAt := 0;
910 >    for I := 0 to Params.Count -1 do
911 >      if Pos('password', LowerCase(Trim(Params.Names[i]))) = 1 then {mbcs ok}
912 >      begin
913 >        FHiddenPassword := Params.Values[Params.Names[i]];
914 >        IndexAt := I;
915 >        break;
916 >      end;
917 >    if IndexAt <> 0 then
918 >      Params.Delete(IndexAt);
919 >  end;
920 >
921 > begin
922 >  Result := false;
923 >  if FLoginCalled then Exit;
924 >  FLoginCalled := true;
925 >  try
926 >  if Assigned(FOnLogin) and not (csDesigning in ComponentState) then
927 >  begin
928 >    result := True;
929 >    LoginParams := TStringList.Create;
930 >    try
931 >      LoginParams.Assign(Params);
932 >      FOnLogin(Self, LoginParams);
933 >      Params.Assign (LoginParams);
934 >      aDatabaseName := FDBName;
935 >      HidePassword;
936 >    finally
937 >      LoginParams.Free;
938 >    end;
939 >  end
940 >  else
941 >  if assigned(IBGUIInterface) then
942 >  begin
943 >    IndexOfUser := IndexOfDBConst(DPBConstantNames[isc_dpb_user_name]);
944 >    if IndexOfUser <> -1 then
945 >      Username := Copy(Params[IndexOfUser],
946 >                                         Pos('=', Params[IndexOfUser]) + 1, {mbcs ok}
947 >                                         Length(Params[IndexOfUser]));
948 >    IndexOfPassword := IndexOfDBConst(DPBConstantNames[isc_dpb_password]);
949 >    if IndexOfPassword <> -1 then
950 >    begin
951 >      Password := Copy(Params[IndexOfPassword],
952 >                                         Pos('=', Params[IndexOfPassword]) + 1, {mbcs ok}
953 >                                         Length(Params[IndexOfPassword]));
954 >      OldPassword := password;
955 >    end;
956 >    result := IBGUIInterface.LoginDialogEx(aDatabaseName, Username, Password, False);
957 >    if result then
958 >    begin
959 >      if IndexOfUser = -1 then
960 >        Params.Add(DPBConstantNames[isc_dpb_user_name] + '=' + Username)
961 >      else
962 >        Params[IndexOfUser] := DPBConstantNames[isc_dpb_user_name] +
963 >                                 '=' + Username;
964 >      if (Password = OldPassword) then
965 >        FHiddenPassword := ''
966 >      else
967 >      begin
968 >        FHiddenPassword := Password;
969 >        if OldPassword <> '' then
970 >          HidePassword;
971 >      end;
972 >    end;
973 >  end
974 >  else
975 >  if LoginPrompt then
976 >     IBError(ibxeNoLoginDialog,[]);
977 >  finally
978 >    FLoginCalled := false
979 >  end;
980 > end;
981 >
982 > procedure TIBDataBase.DoConnect;
983 > var
984 >  DPB: String;
985 >  TempDBParams: TStrings;
986 >  I: integer;
987 >  aDBName: string;
988 >
989 >  {Call error analysis}
990 >  sqlcode: Long;
991 >  IBErrorCode: Long;
992 >  status_vector: PISC_STATUS;
993 >  CharSetID: integer;
994 > begin
995 >  CheckInactive;
996 >  CheckDatabaseName;
997 >  if (not LoginPrompt) and (FHiddenPassword <> '') then
998 >  begin
999 >    FHiddenPassword := '';
1000 >    FDBParamsChanged := True;
1001 >  end;
1002 >  { Use builtin login prompt if requested }
1003 >  aDBName := FDBName;
1004 >  if (LoginPrompt or (csDesigning in ComponentState)) and not Login(aDBName) then
1005 >    IBError(ibxeOperationCancelled, [nil]);
1006 >
1007 >  TempDBParams := TStringList.Create;
1008 >  try
1009 >   TempDBParams.Assign(FDBParams);
1010 >   if UseDefaultSystemCodePage then
1011 >   begin
1012 >     {$IFDEF HAS_ANSISTRING_CODEPAGE}
1013 >     {$ifdef WINDOWS}
1014 >     if TFirebirdCharacterSets.CodePage2CharSetID(GetACP,CharSetID) then
1015 >       TempDBParams.Values['lc_ctype'] := TFirebirdCharacterSets.GetCharsetName(CharSetID)
1016 >     else
1017 >     {$else}
1018 >     if TFirebirdCharacterSets.CodePage2CharSetID(DefaultSystemCodePage,CharSetID) then
1019 >       TempDBParams.Values['lc_ctype'] := TFirebirdCharacterSets.GetCharsetName(CharSetID)
1020 >     else
1021 >     {$endif}
1022 >     {$ENDIF}
1023 >     TempDBParams.Values['lc_ctype'] :='UTF8';
1024 >   end;
1025 >   {Opportunity to override defaults}
1026 >   for i := 0 to FSQLObjects.Count - 1 do
1027 >   begin
1028 >       if FSQLObjects[i] <> nil then
1029 >         SQLObjects[i].DoBeforeDatabaseConnect(TempDBParams,aDBName);
1030 >   end;
1031 >   FDefaultCharSetName := AnsiUpperCase(TempDBParams.Values['lc_ctype']);
1032 >   if FDefaultCharSetName <> '' then
1033 >     TFirebirdCharacterSets.CharSetName2CharSetID(FDefaultCharSetName,FDefaultCharSetID);
1034 >   {$IFDEF HAS_ANSISTRING_CODEPAGE}
1035 >   TFirebirdCharacterSets.CharSetID2CodePage(FDefaultCharSetID,FDefaultCodePage);
1036 >   {$ENDIF}
1037 >   { Generate a new DPB if necessary }
1038 >   if (FDBParamsChanged or (TempDBParams.Text <> FDBParams.Text)) then
1039 >   begin
1040 >     FDBParamsChanged := False;
1041 >     if (not LoginPrompt and not (csDesigning in ComponentState)) or (FHiddenPassword = '') then
1042 >       GenerateDPB(TempDBParams, DPB, FDPBLength)
1043 >     else
1044 >     begin
1045 >        TempDBParams.Add('password=' + FHiddenPassword);
1046 >        GenerateDPB(TempDBParams, DPB, FDPBLength);
1047 >     end;
1048 >     IBAlloc(FDPB, 0, FDPBLength);
1049 >     Move(DPB[1], FDPB[0], FDPBLength);
1050 >   end;
1051 >  finally
1052 >   TempDBParams.Free;
1053 >  end;
1054 >  repeat
1055 >    if Call(isc_attach_database(StatusVector, Length(aDBName),
1056 >                         PChar(aDBName), @FHandle,
1057 >                         FDPBLength, FDPB), False) > 0 then
1058 >    begin
1059 >      {$IFDEF UNIX}
1060 >      if IsEmbeddedServer and (Pos(':',aDBName) = 0) then
1061 >      begin
1062 >        status_vector := StatusVector;
1063 >        IBErrorCode := StatusVectorArray[1];
1064 >        sqlcode := isc_sqlcode(StatusVector);
1065 >
1066 >        if ((sqlcode = -901) and (IBErrorCode = 335544382)) {Access permissions on firebird temp}
1067 >           or
1068 >           ((sqlcode = -902) and (IBErrorCode = 335544373)) {Security DB Problem}
1069 >           then
1070 >           begin
1071 >             aDBName := 'localhost:' + aDBName;
1072 >             Continue;
1073 >           end;
1074 >      end;
1075 >      {$ENDIF}
1076 >      FHandle := nil;
1077 >      IBDataBaseError;
1078 >    end;
1079 >  until FHandle <> nil;
1080 >  if not (csDesigning in ComponentState) then
1081 >    FDBName := aDBName; {Synchronise at run time}
1082 >  FDBSQLDialect := GetDBSQLDialect;
1083 >  ValidateClientSQLDialect;
1084 >  for i := 0 to FSQLObjects.Count - 1 do
1085 >  begin
1086 >      if FSQLObjects[i] <> nil then
1087 >        SQLObjects[i].DoAfterDatabaseConnect;
1088 >  end;
1089 >  if not (csDesigning in ComponentState) then
1090 >    MonitorHook.DBConnect(Self);
1091 > end;
1092 >
1093 > procedure TIBDataBase.RemoveSQLObject(Idx: Integer);
1094 > var
1095 >  ds: TIBBase;
1096 > begin
1097 >  if (Idx >= 0) and (FSQLObjects[Idx] <> nil) then
1098 >  begin
1099 >    ds := SQLObjects[Idx];
1100 >    FSQLObjects[Idx] := nil;
1101 >    ds.Database := nil;
1102 >    if (ds.owner is TDataSet) then
1103 >      FDataSets.Remove(TDataSet(ds.Owner));
1104 >  end;
1105 > end;
1106 >
1107 > procedure TIBDataBase.RemoveSQLObjects;
1108 > var
1109 >  i: Integer;
1110 > begin
1111 >  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1112 >  begin
1113 >    RemoveSQLObject(i);
1114 >    if (TIBBase(FSQLObjects[i]).owner is TDataSet) then
1115 >      FDataSets.Remove(TDataSet(TIBBase(FSQLObjects[i]).owner));
1116 >  end;
1117 > end;
1118 >
1119 > procedure TIBDataBase.RemoveTransaction(Idx: Integer);
1120 > var
1121 >  TR: TIBTransaction;
1122 > begin
1123 >  if ((Idx >= 0) and (FTransactions[Idx] <> nil)) then
1124 >  begin
1125 >    TR := Transactions[Idx];
1126 >    FTransactions[Idx] := nil;
1127 >    TR.RemoveDatabase(TR.FindDatabase(Self));
1128 >    if TR = FDefaultTransaction then
1129 >      FDefaultTransaction := nil;
1130 >  end;
1131 > end;
1132 >
1133 > procedure TIBDataBase.RemoveTransactions;
1134 > var
1135 >  i: Integer;
1136 > begin
1137 >  for i := 0 to FTransactions.Count - 1 do if FTransactions[i] <> nil then
1138 >    RemoveTransaction(i);
1139 > end;
1140 >
1141 > procedure TIBDataBase.SetDatabaseName( const Value: TIBFileName);
1142 > begin
1143 >  if FDBName <> Value then
1144 >  begin
1145 >    EnsureInactive;
1146 >    CheckInactive;
1147 >    FDBName := Value;
1148 >  end;
1149 > end;
1150 >
1151 > procedure TIBDataBase.SetDBParamByDPB( const Idx: Integer; Value: String);
1152 > var
1153 >  ConstIdx: Integer;
1154 > begin
1155 >  ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
1156 >  if (Value = '') then
1157 >  begin
1158 >    if ConstIdx <> -1 then
1159 >      Params.Delete(ConstIdx);
1160 >  end
1161 >  else
1162 >  begin
1163 >    if (ConstIdx = -1) then
1164 >      Params.Add(DPBConstantNames[Idx] + '=' + Value)
1165 >    else
1166 >      Params[ConstIdx] := DPBConstantNames[Idx] + '=' + Value;
1167 >  end;
1168 > end;
1169 >
1170 > procedure TIBDataBase.SetDBParams(Value: TStrings);
1171 > begin
1172 >  FDBParams.Assign(Value);
1173 > end;
1174 >
1175 > procedure TIBDataBase.SetDefaultTransaction(Value: TIBTransaction);
1176 > var
1177 >  i: Integer;
1178 > begin
1179 >  if (FDefaultTransaction <> nil) and (FDefaultTransaction <> Value) then
1180 >  begin
1181 >    i := FindTransaction(FDefaultTransaction);
1182 >    if (i <> -1) and (FDefaultTransaction.DefaultDatabase <> self) then
1183 >      RemoveTransaction(i);
1184 >  end;
1185 >  if (Value <> nil) and (FDefaultTransaction <> Value) then
1186 >  begin
1187 >    Value.AddDatabase(Self);
1188 >    AddTransaction(Value);
1189 >  end;
1190 >  FDefaultTransaction := Value;
1191 > end;
1192 >
1193 > procedure TIBDataBase.SetHandle(Value: TISC_DB_HANDLE);
1194 > begin
1195 >  if HandleIsShared then
1196 >    Close
1197 >  else
1198 >    CheckInactive;
1199 >  FHandle := Value;
1200 >  FHandleIsShared := (Value <> nil);
1201 > end;
1202 >
1203 > procedure TIBDataBase.SetIdleTimer(Value: Integer);
1204 > begin
1205 >  if Value < 0 then
1206 >    IBError(ibxeTimeoutNegative, [nil])
1207 >  else
1208 >    if (Value = 0) then
1209 >    begin
1210 >      FTimer.Enabled := False;
1211 >      FTimer.Interval := 0;
1212 >    end
1213 >    else
1214 >      if (Value > 0) then
1215 >      begin
1216 >        FTimer.Interval := Value;
1217 >        if not (csDesigning in ComponentState) then
1218 >          FTimer.Enabled := True;
1219 >      end;
1220 > end;
1221 >
1222 > function TIBDataBase.TestConnected: Boolean;
1223 > var
1224 >  DatabaseInfo: TIBDatabaseInfo;
1225 > begin
1226 >  result := Connected;
1227 >  if result then
1228 >  begin
1229 >    DatabaseInfo := TIBDatabaseInfo.Create(self);
1230 >    try
1231 >      DatabaseInfo.Database := self;
1232 >      { poke the server to see if connected }
1233 >      if DatabaseInfo.BaseLevel = 0 then ;
1234 >      DatabaseInfo.Free;
1235 >    except
1236 >      ForceClose;
1237 >      result := False;
1238 >      DatabaseInfo.Free;
1239 >    end;
1240 >  end;
1241 > end;
1242 >
1243 > procedure TIBDataBase.TimeoutConnection(Sender: TObject);
1244 > begin
1245 >  if Connected then
1246 >  begin
1247 >    if FCanTimeout then
1248 >    begin
1249 >      ForceClose;
1250 >      if Assigned(FOnIdleTimer) then
1251 >        FOnIdleTimer(Self);
1252 >    end
1253 >    else
1254 >      FCanTimeout := True;
1255 >  end;
1256 > end;
1257 >
1258 > function TIBDataBase.GetIsReadOnly: Boolean;
1259 > var
1260 >  DatabaseInfo: TIBDatabaseInfo;
1261 > begin
1262 >  DatabaseInfo := TIBDatabaseInfo.Create(self);
1263 >  DatabaseInfo.Database := self;
1264 >  if (DatabaseInfo.ODSMajorVersion < 10) then
1265 >    result := false
1266 >  else
1267 >  begin
1268 >    if (DatabaseInfo.ReadOnly = 0) then
1269 >      result := false
1270 >    else
1271 >      result := true;
1272 >  end;
1273 >  DatabaseInfo.Free;
1274 > end;
1275 >
1276 > function TIBDataBase.GetSQLDialect: Integer;
1277 > begin
1278 >  Result := FSQLDialect;
1279 > end;
1280 >
1281 >
1282 > procedure TIBDataBase.SetSQLDialect( const Value: Integer);
1283 > begin
1284 >  if (Value < 1) then IBError(ibxeSQLDialectInvalid, [nil]);
1285 >  if ((FHandle = nil) or (Value <= FDBSQLDialect))  then
1286 >    FSQLDialect := Value
1287 >  else
1288 >    IBError(ibxeSQLDialectInvalid, [nil]);
1289 > end;
1290 >
1291 > function TIBDataBase.GetDBSQLDialect: Integer;
1292 > var
1293 >  DatabaseInfo: TIBDatabaseInfo;
1294 > begin
1295 >  DatabaseInfo := TIBDatabaseInfo.Create(self);
1296 >  DatabaseInfo.Database := self;
1297 >  result := DatabaseInfo.DBSQLDialect;
1298 >  DatabaseInfo.Free;
1299 > end;
1300 >
1301 > procedure TIBDataBase.ValidateClientSQLDialect;
1302 > begin
1303 >  if (FDBSQLDialect < FSQLDialect) then
1304 >  begin
1305 >    FSQLDialect := FDBSQLDialect;
1306 >    if Assigned (FOnDialectDowngradeWarning) then
1307 >      FOnDialectDowngradeWarning(self);
1308 >  end;
1309 > end;
1310 >
1311 > procedure TIBDataBase.ApplyUpdates( const DataSets: array of TDataSet);
1312 > var
1313 >  I: Integer;
1314 >  DS: TIBCustomDataSet;
1315 >  TR: TIBTransaction;
1316 > begin
1317 >  TR := nil;
1318 >  for I := 0 to High(DataSets) do
1319 >  begin
1320 >    DS := TIBCustomDataSet(DataSets[I]);
1321 >    if DS.Database <> Self then
1322 >      IBError(ibxeUpdateWrongDB, [nil]);
1323 >    if TR = nil then
1324 >      TR := DS.Transaction;
1325 >    if (DS.Transaction <> TR) or (TR = nil) then
1326 >      IBError(ibxeUpdateWrongTR, [nil]);
1327 >  end;
1328 >  TR.CheckInTransaction;
1329 >  for I := 0 to High(DataSets) do
1330 >  begin
1331 >    DS := TIBCustomDataSet(DataSets[I]);
1332 >    DS.ApplyUpdates;
1333 >  end;
1334 >  TR.CommitRetaining;
1335 > end;
1336 >
1337 > procedure TIBDataBase.CloseDataSets;
1338 > var
1339 >  i: Integer;
1340 > begin
1341 >  for i := 0 to DataSetCount - 1 do
1342 >    if (DataSets[i] <> nil) then
1343 >      DataSets[i].close;
1344 > end;
1345 >
1346 > function TIBDataBase.GetDataset(Index: longint): TDataset;
1347 > begin
1348 >  if (Index >= 0) and (Index < FDataSets.Count) then
1349 >    Result := TDataSet(FDataSets[Index])
1350 >  else
1351 >    raise Exception.Create('Invalid Index to DataSets');
1352 > end;
1353 >
1354 > function TIBDataBase.GetDataSetCount: Longint;
1355 > begin
1356 >  Result := FDataSets.Count;
1357 > end;
1358 >
1359 > procedure TIBDataBase.ReadState(Reader: TReader);
1360 > begin
1361 >  FDBParams.Clear;
1362 >  inherited ReadState(Reader);
1363 > end;
1364 >
1365 > procedure TIBDataBase.SetConnected(Value: boolean);
1366 > begin
1367 >  if StreamedConnected and not AllowStreamedConnected then
1368 >  begin
1369 >    StreamedConnected := false;
1370 >    Value := false
1371 >  end;
1372 >  inherited SetConnected(Value);
1373 > end;
1374 >
1375 > procedure TIBDataBase.GetFieldNames( const TableName: string; List: TStrings);
1376 > var
1377 >  Query: TIBSQL;
1378 > begin
1379 >  if TableName = '' then
1380 >    IBError(ibxeNoTableName, [nil]);
1381 >  if not Connected then
1382 >    Open;
1383 >  if not FInternalTransaction.Active then
1384 >    FInternalTransaction.StartTransaction;
1385 >  Query := TIBSQL.Create(self);
1386 >  try
1387 >    Query.GoToFirstRecordOnExecute := False;
1388 >    Query.Database := Self;
1389 >    Query.Transaction := FInternalTransaction;
1390 >    Query.SQL.Text := 'Select R.RDB$FIELD_NAME ' + {do not localize}
1391 >      'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
1392 >      'where R.RDB$RELATION_NAME = ' + {do not localize}
1393 >      '''' +
1394 >      FormatIdentifierValue(SQLDialect, TableName) +
1395 >      ''' ' +
1396 >      'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '; {do not localize}
1397 >    Query.Prepare;
1398 >    Query.ExecQuery;
1399 >    with List do
1400 >    begin
1401 >      BeginUpdate;
1402 >      try
1403 >        Clear;
1404 >        while (not Query.EOF) and (Query.Next <> nil) do
1405 >          List.Add(TrimRight(Query.Current.ByName('RDB$FIELD_NAME').AsString)); {do not localize}
1406 >      finally
1407 >        EndUpdate;
1408 >      end;
1409 >    end;
1410 >  finally
1411 >    Query.free;
1412 >    FInternalTransaction.Commit;
1413 >  end;
1414 > end;
1415 >
1416 > procedure TIBDataBase.GetTableNames(List: TStrings; SystemTables: Boolean);
1417 > var
1418 >  Query : TIBSQL;
1419 > begin
1420 >  if not (csReading in ComponentState) then
1421 >  begin
1422 >    if not Connected then
1423 >      Open;
1424 >    if not FInternalTransaction.Active then
1425 >      FInternalTransaction.StartTransaction;
1426 >    Query := TIBSQL.Create(self);
1427 >    try
1428 >      Query.GoToFirstRecordOnExecute := False;
1429 >      Query.Database := Self;
1430 >      Query.Transaction := FInternalTransaction;
1431 >      if SystemTables then
1432 >        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1433 >                          ' where RDB$VIEW_BLR is NULL' {do not localize}
1434 >      else
1435 >        Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
1436 >                          ' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
1437 >      Query.Prepare;
1438 >      Query.ExecQuery;
1439 >      with List do
1440 >      begin
1441 >        BeginUpdate;
1442 >        try
1443 >          Clear;
1444 >          while (not Query.EOF) and (Query.Next <> nil) do
1445 >            List.Add(TrimRight(Query.Current[0].AsString));
1446 >        finally
1447 >          EndUpdate;
1448 >        end;
1449 >      end;
1450 >    finally
1451 >      Query.Free;
1452 >      FInternalTransaction.Commit;
1453 >    end;
1454 >  end;
1455 > end;
1456 >
1457 > { TIBTransaction }
1458 >
1459 > constructor TIBTransaction.Create(AOwner: TComponent);
1460 > begin
1461 >  inherited Create(AOwner);
1462 >  FIBLoaded := False;
1463 >  CheckIBLoaded;
1464 >  FIBLoaded := True;
1465 >  CheckIBLoaded;
1466 >  FDatabases := TList.Create;
1467 >  FSQLObjects := TList.Create;
1468 >  FHandle := nil;
1469 >  FTPB := nil;
1470 >  FTPBLength := 0;
1471 >  FTRParams := TStringList.Create;
1472 >  FTRParamsChanged := True;
1473 >  TStringList(FTRParams).OnChange := TRParamsChange;
1474 >  TStringList(FTRParams).OnChanging := TRParamsChanging;
1475 >  FTimer := TFPTimer.Create(Self);
1476 >  FTimer.Enabled := False;
1477 >  FTimer.Interval := 0;
1478 >  FTimer.OnTimer := TimeoutTransaction;
1479 >  FDefaultAction := taCommit;
1480 > end;
1481 >
1482 > destructor TIBTransaction.Destroy;
1483 > var
1484 >  i: Integer;
1485 > begin
1486 >  if FIBLoaded then
1487 >  begin
1488 >    if InTransaction then
1489 >      EndTransaction(FDefaultAction, True);
1490 >    for i := 0 to FSQLObjects.Count - 1 do
1491 >      if FSQLObjects[i] <> nil then
1492 >        SQLObjects[i].DoTransactionFree;
1493 >    RemoveSQLObjects;
1494 >    RemoveDatabases;
1495 >    FreeMem(FTPB);
1496 >    FTPB := nil;
1497 >    FTRParams.Free;
1498 >    FSQLObjects.Free;
1499 >    FDatabases.Free;
1500 >  end;
1501 >  inherited Destroy;
1502 > end;
1503 >
1504 > function TIBTransaction.Call(ErrCode: ISC_STATUS;
1505 >  RaiseError: Boolean): ISC_STATUS;
1506 > var
1507 >  i: Integer;
1508 > begin
1509 >  result := ErrCode;
1510 >  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1511 >    Databases[i].FCanTimeout := False;
1512 >  FCanTimeout := False;
1513 >  if RaiseError and (result > 0) then
1514 >    IBDataBaseError;
1515 > end;
1516 >
1517 > procedure TIBTransaction.CheckDatabasesInList;
1518 > begin
1519 >  if GetDatabaseCount = 0 then
1520 >    IBError(ibxeNoDatabasesInTransaction, [nil]);
1521 > end;
1522 >
1523 > procedure TIBTransaction.CheckInTransaction;
1524 > begin
1525 >  if FStreamedActive and (not InTransaction) then
1526 >    Loaded;
1527 >  if (FHandle = nil) then
1528 >    IBError(ibxeNotInTransaction, [nil]);
1529 > end;
1530 >
1531 > procedure TIBTransaction.DoBeforeTransactionEnd;
1532 > begin
1533 >  if Assigned(FBeforeTransactionEnd) then
1534 >    FBeforeTransactionEnd(self);
1535 > end;
1536 >
1537 > procedure TIBTransaction.DoAfterTransactionEnd;
1538 > begin
1539 >  if Assigned(FAfterTransactionEnd) then
1540 >    FAfterTransactionEnd(self);
1541 > end;
1542 >
1543 > procedure TIBTransaction.DoOnStartTransaction;
1544 > begin
1545 >  if assigned(FOnStartTransaction) then
1546 >    OnStartTransaction(self);
1547 > end;
1548 >
1549 > procedure TIBTransaction.DoAfterExecQuery(Sender: TObject);
1550 > begin
1551 >  if assigned(FAfterExecQuery) then
1552 >    AfterExecQuery(Sender);
1553 > end;
1554 >
1555 > procedure TIBTransaction.DoAfterEdit(Sender: TObject);
1556 > begin
1557 >  if assigned(FAfterEdit) then
1558 >    AfterEdit(Sender);
1559 > end;
1560 >
1561 > procedure TIBTransaction.DoAfterDelete(Sender: TObject);
1562 > begin
1563 >  if assigned(FAfterDelete) then
1564 >    AfterDelete(Sender);
1565 > end;
1566 >
1567 > procedure TIBTransaction.DoAfterInsert(Sender: TObject);
1568 > begin
1569 >  if assigned(FAfterInsert) then
1570 >    AfterInsert(Sender);
1571 > end;
1572 >
1573 > procedure TIBTransaction.DoAfterPost(Sender: TObject);
1574 > begin
1575 >  if assigned(FAfterPost) then
1576 >    AfterPost(Sender);
1577 > end;
1578 >
1579 > procedure TIBTransaction.EnsureNotInTransaction;
1580 > begin
1581 >  if csDesigning in ComponentState then
1582 >  begin
1583 >    if FHandle <> nil then
1584 >      Rollback;
1585 >  end;
1586 > end;
1587 >
1588 > procedure TIBTransaction.CheckNotInTransaction;
1589 > begin
1590 >  if (FHandle <> nil) then
1591 >    IBError(ibxeInTransaction, [nil]);
1592 > end;
1593 >
1594 > function TIBTransaction.AddDatabase(db: TIBDatabase): Integer;
1595 > var
1596 >  i: Integer;
1597 >  NilFound: Boolean;
1598 > begin
1599 >  i := FindDatabase(db);
1600 >  if i <> -1 then
1601 >  begin
1602 >    result := i;
1603 >    exit;
1604 >  end;
1605 >  NilFound := False;
1606 >  i := 0;
1607 >  while (not NilFound) and (i < FDatabases.Count) do
1608 >  begin
1609 >    NilFound := (FDatabases[i] = nil);
1610 >    if (not NilFound) then
1611 >      Inc(i);
1612 >  end;
1613 >  if (NilFound) then
1614 >  begin
1615 >    FDatabases[i] := db;
1616 >    result := i;
1617 >  end
1618 >  else
1619 >  begin
1620 >    result := FDatabases.Count;
1621 >    FDatabases.Add(db);
1622 >  end;
1623 > end;
1624 >
1625 > function TIBTransaction.AddSQLObject(ds: TIBBase): Integer;
1626 > begin
1627 >  result := 0;
1628 >  while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
1629 >    Inc(result);
1630 >  if (result = FSQLObjects.Count) then
1631 >    FSQLObjects.Add(ds)
1632 >  else
1633 >    FSQLObjects[result] := ds;
1634 > end;
1635 >
1636 > procedure TIBTransaction.Commit;
1637 > begin
1638 >  EndTransaction(TACommit, False);
1639 > end;
1640 >
1641 > procedure TIBTransaction.CommitRetaining;
1642 > begin
1643 >  EndTransaction(TACommitRetaining, False);
1644 > end;
1645 >
1646 > procedure TIBTransaction.EndTransaction(Action: TTransactionAction;
1647 >  Force: Boolean);
1648 > var
1649 >  status: ISC_STATUS;
1650 >  i: Integer;
1651 > begin
1652 >  CheckInTransaction;
1653 >  if FInEndTransaction then Exit;
1654 >  FInEndTransaction := true;
1655 >  FEndAction := Action;
1656 >  try
1657 >  case Action of
1658 >    TARollback, TACommit:
1659 >    begin
1660 >      if (HandleIsShared) and
1661 >         (Action <> FDefaultAction) and
1662 >         (not Force) then
1663 >        IBError(ibxeCantEndSharedTransaction, [nil]);
1664 >      DoBeforeTransactionEnd;
1665 >      for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1666 >        SQLObjects[i].DoBeforeTransactionEnd(Action);
1667 >      if InTransaction then
1668 >      begin
1669 >        if HandleIsShared then
1670 >        begin
1671 >          FHandle := nil;
1672 >          FHandleIsShared := False;
1673 >          status := 0;
1674 >        end
1675 >        else
1676 >          if (Action = TARollback) then
1677 >            status := Call(isc_rollback_transaction(StatusVector, @FHandle), False)
1678 >          else
1679 >            status := Call(isc_commit_transaction(StatusVector, @FHandle), False);
1680 >        if ((Force) and (status > 0)) then
1681 >          status := Call(isc_rollback_transaction(StatusVector, @FHandle), False);
1682 >        if Force then
1683 >          FHandle := nil
1684 >        else
1685 >          if (status > 0) then
1686 >            IBDataBaseError;
1687 >        for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1688 >          SQLObjects[i].DoAfterTransactionEnd;
1689 >        DoAfterTransactionEnd;
1690 >      end;
1691 >    end;
1692 >    TACommitRetaining:
1693 >      Call(isc_commit_retaining(StatusVector, @FHandle), True);
1694 >    TARollbackRetaining:
1695 >      Call(isc_rollback_retaining(StatusVector, @FHandle), True);
1696 >  end;
1697 >  if not (csDesigning in ComponentState) then
1698 >  begin
1699 >    case Action of
1700 >      TACommit:
1701 >        MonitorHook.TRCommit(Self);
1702 >      TARollback:
1703 >        MonitorHook.TRRollback(Self);
1704 >      TACommitRetaining:
1705 >        MonitorHook.TRCommitRetaining(Self);
1706 >      TARollbackRetaining:
1707 >        MonitorHook.TRRollbackRetaining(Self);
1708 >    end;
1709 >  end;
1710 >  finally
1711 >    FInEndTransaction := false
1712 >  end;
1713 > end;
1714 >
1715 > function TIBTransaction.GetDatabase(Index: Integer): TIBDatabase;
1716 > begin
1717 >  result := FDatabases[Index];
1718 > end;
1719 >
1720 > function TIBTransaction.GetDatabaseCount: Integer;
1721 > var
1722 >  i, Cnt: Integer;
1723 > begin
1724 >  result := 0;
1725 >  Cnt := FDatabases.Count - 1;
1726 >  for i := 0 to Cnt do if FDatabases[i] <> nil then
1727 >    Inc(result);
1728 > end;
1729 >
1730 > function TIBTransaction.GetSQLObject(Index: Integer): TIBBase;
1731 > begin
1732 >  result := FSQLObjects[Index];
1733 > end;
1734 >
1735 > function TIBTransaction.GetSQLObjectCount: Integer;
1736 > var
1737 >  i, Cnt: Integer;
1738 > begin
1739 >  result := 0;
1740 >  Cnt := FSQLObjects.Count - 1;
1741 >  for i := 0 to Cnt do if FSQLObjects[i] <> nil then
1742 >    Inc(result);
1743 > end;
1744 >
1745 > function TIBTransaction.GetInTransaction: Boolean;
1746 > begin
1747 >  result := (FHandle <> nil);
1748 > end;
1749 >
1750 > function TIBTransaction.FindDatabase(db: TIBDatabase): Integer;
1751 > var
1752 >  i: Integer;
1753 > begin
1754 >  result := -1;
1755 >  for i := 0 to FDatabases.Count - 1 do
1756 >    if db = TIBDatabase(FDatabases[i]) then
1757 >    begin
1758 >      result := i;
1759 >      break;
1760 >    end;
1761 > end;
1762 >
1763 > function TIBTransaction.FindDefaultDatabase: TIBDatabase;
1764 > var
1765 >  i: Integer;
1766 > begin
1767 >  result := FDefaultDatabase;
1768 >  if result = nil then
1769 >  begin
1770 >    for i := 0 to FDatabases.Count - 1 do
1771 >      if (TIBDatabase(FDatabases[i]) <> nil) and
1772 >        (TIBDatabase(FDatabases[i]).DefaultTransaction = self) then
1773 >      begin
1774 >        result := TIBDatabase(FDatabases[i]);
1775 >        break;
1776 >      end;
1777 >  end;
1778 > end;
1779 >
1780 > function TIBTransaction.GetEndAction: TTransactionAction;
1781 > begin
1782 >  if FInEndTransaction then
1783 >     Result := FEndAction
1784 >  else
1785 >     IBError(ibxeIB60feature, [nil])
1786 > end;
1787 >
1788 >
1789 > function TIBTransaction.GetIdleTimer: Integer;
1790 > begin
1791 >  result := FTimer.Interval;
1792 > end;
1793 >
1794 > procedure TIBTransaction.Loaded;
1795 > begin
1796 >  inherited Loaded;
1797 > end;
1798 >
1799 > procedure TIBTransaction.BeforeDatabaseDisconnect(DB: TIBDatabase);
1800 > begin
1801 >  if InTransaction then
1802 >    EndTransaction(FDefaultAction, True);
1803 > end;
1804 >
1805 > procedure TIBTransaction.RemoveDatabase(Idx: Integer);
1806 > var
1807 >  DB: TIBDatabase;
1808 > begin
1809 >  if ((Idx >= 0) and (FDatabases[Idx] <> nil)) then
1810 >  begin
1811 >    DB := Databases[Idx];
1812 >    FDatabases[Idx] := nil;
1813 >    DB.RemoveTransaction(DB.FindTransaction(Self));
1814 >    if DB = FDefaultDatabase then
1815 >      FDefaultDatabase := nil;
1816 >  end;
1817 > end;
1818 >
1819 > procedure TIBTransaction.RemoveDatabases;
1820 > var
1821 >  i: Integer;
1822 > begin
1823 >  for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
1824 >    RemoveDatabase(i);
1825 > end;
1826 >
1827 > procedure TIBTransaction.RemoveSQLObject(Idx: Integer);
1828 > var
1829 >  ds: TIBBase;
1830 > begin
1831 >  if ((Idx >= 0) and (FSQLObjects[Idx] <> nil)) then
1832 >  begin
1833 >    ds := SQLObjects[Idx];
1834 >    FSQLObjects[Idx] := nil;
1835 >    ds.Transaction := nil;
1836 >  end;
1837 > end;
1838 >
1839 > procedure TIBTransaction.RemoveSQLObjects;
1840 > var
1841 >  i: Integer;
1842 > begin
1843 >  for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
1844 >    RemoveSQLObject(i);
1845 > end;
1846 >
1847 > procedure TIBTransaction.Rollback;
1848 > begin
1849 >  EndTransaction(TARollback, False);
1850 > end;
1851 >
1852 > procedure TIBTransaction.RollbackRetaining;
1853 > begin
1854 >  EndTransaction(TARollbackRetaining, False);
1855 > end;
1856 >
1857 > procedure TIBTransaction.SetActive(Value: Boolean);
1858 > begin
1859 >  if csReading in ComponentState then
1860 >    FStreamedActive := Value
1861 >  else
1862 >    if Value and not InTransaction then
1863 >      StartTransaction
1864 >    else
1865 >      if not Value and InTransaction then
1866 >        Rollback;
1867 > end;
1868 >
1869 > procedure TIBTransaction.SetDefaultAction(Value: TTransactionAction);
1870 > begin
1871 > (*  if (Value = taRollbackRetaining) and (GetIBClientVersion < 6) then
1872 >    IBError(ibxeIB60feature, [nil]);*)
1873 >  FDefaultAction := Value;
1874 > end;
1875 >
1876 > procedure TIBTransaction.SetDefaultDatabase(Value: TIBDatabase);
1877 > var
1878 >  i: integer;
1879 > begin
1880 >  if (FDefaultDatabase <> nil) and (FDefaultDatabase <> Value) then
1881 >  begin
1882 >    i := FDefaultDatabase.FindTransaction(self);
1883 >    if (i <> -1) then
1884 >      FDefaultDatabase.RemoveTransaction(i);
1885 >  end;
1886 >  if (Value <> nil) and (FDefaultDatabase <> Value) then
1887 >  begin
1888 >    Value.AddTransaction(Self);
1889 >    AddDatabase(Value);
1890 >    for i := 0 to FSQLObjects.Count - 1 do
1891 >      if (FSQLObjects[i] <> nil) and
1892 >         (TIBBase(FSQLObjects[i]).Database = nil) then
1893 >         SetObjectProp(TIBBase(FSQLObjects[i]).Owner, 'Database', Value);
1894 >  end;
1895 >  FDefaultDatabase := Value;
1896 > end;
1897 >
1898 > procedure TIBTransaction.SetHandle(Value: TISC_TR_HANDLE);
1899 > begin
1900 >  if (HandleIsShared) then
1901 >    EndTransaction(DefaultAction, True)
1902 >  else
1903 >    CheckNotInTransaction;
1904 >  FHandle := Value;
1905 >  FHandleIsShared := (Value <> nil);
1906 > end;
1907 >
1908 > procedure TIBTransaction.Notification( AComponent: TComponent;
1909 >                                        Operation: TOperation);
1910 > var
1911 >  i: Integer;
1912 > begin
1913 >  inherited Notification( AComponent, Operation);
1914 >  if (Operation = opRemove) and (AComponent = FDefaultDatabase) then
1915 >  begin
1916 >    i := FindDatabase(FDefaultDatabase);
1917 >    if (i <> -1) then
1918 >      RemoveDatabase(i);
1919 >    FDefaultDatabase := nil;
1920 >  end;
1921 > end;
1922 >
1923 > procedure TIBTransaction.SetIdleTimer(Value: Integer);
1924 > begin
1925 >  if Value < 0 then
1926 >    IBError(ibxeTimeoutNegative, [nil])
1927 >  else
1928 >    if (Value = 0) then
1929 >    begin
1930 >      FTimer.Enabled := False;
1931 >      FTimer.Interval := 0;
1932 >    end
1933 >    else
1934 >      if (Value > 0) then
1935 >      begin
1936 >        FTimer.Interval := Value;
1937 >        if not (csDesigning in ComponentState) then
1938 >          FTimer.Enabled := True;
1939 >      end;
1940 > end;
1941 >
1942 > procedure TIBTransaction.SetTRParams(Value: TStrings);
1943 > begin
1944 >  FTRParams.Assign(Value);
1945 > end;
1946 >
1947 > procedure TIBTransaction.StartTransaction;
1948 > var
1949 >  pteb: PISC_TEB_ARRAY;
1950 >  TPB: String;
1951 >  i: Integer;
1952 > begin
1953 >  CheckNotInTransaction;
1954 >  CheckDatabasesInList;
1955 >  for i := 0 to FDatabases.Count - 1 do
1956 >   if  FDatabases[i] <> nil then
1957 >   begin
1958 >     with TIBDatabase(FDatabases[i]) do
1959 >     if not Connected then
1960 >       if FStreamedConnected then
1961 >       begin
1962 >         Open;
1963 >         FStreamedConnected := False;
1964 >       end
1965 >       else
1966 >         IBError(ibxeDatabaseClosed, [nil]);
1967 >   end;
1968 >  if FTRParamsChanged then
1969 >  begin
1970 >    FTRParamsChanged := False;
1971 >    GenerateTPB(FTRParams, TPB, FTPBLength);
1972 >    if FTPBLength > 0 then
1973 >    begin
1974 >      IBAlloc(FTPB, 0, FTPBLength);
1975 >      Move(TPB[1], FTPB[0], FTPBLength);
1976 >    end;
1977 >  end;
1978 >
1979 >  pteb := nil;
1980 >  IBAlloc(pteb, 0, DatabaseCount * SizeOf(TISC_TEB));
1981 >  try
1982 >    for i := 0 to DatabaseCount - 1 do if Databases[i] <> nil then
1983 >    begin
1984 >      pteb^[i].db_handle := @(Databases[i].Handle);
1985 >      pteb^[i].tpb_length := FTPBLength;
1986 >      pteb^[i].tpb_address := FTPB;
1987 >    end;
1988 >    if Call(isc_start_multiple(StatusVector, @FHandle,
1989 >                               DatabaseCount, PISC_TEB(pteb)), False) > 0 then
1990 >    begin
1991 >      FHandle := nil;
1992 >      IBDataBaseError;
1993 >    end;
1994 >    if not (csDesigning in ComponentState) then
1995 >      MonitorHook.TRStart(Self);
1996 >  finally
1997 >    FreeMem(pteb);
1998 >  end;
1999 >  DoOnStartTransaction;
2000 > end;
2001 >
2002 > procedure TIBTransaction.TimeoutTransaction(Sender: TObject);
2003 > begin
2004 >  if InTransaction then
2005 >  begin
2006 >    if FCanTimeout then
2007 >    begin
2008 >      EndTransaction(FDefaultAction, True);
2009 >      if Assigned(FOnIdleTimer) then
2010 >        FOnIdleTimer(Self);
2011 >    end
2012 >    else
2013 >      FCanTimeout := True;
2014 >  end;
2015 > end;
2016 >
2017 > procedure TIBTransaction.TRParamsChange(Sender: TObject);
2018 > begin
2019 >  FTRParamsChanged := True;
2020 > end;
2021 >
2022 > procedure TIBTransaction.TRParamsChanging(Sender: TObject);
2023 > begin
2024 >  EnsureNotInTransaction;
2025 >  CheckNotInTransaction;
2026 > end;
2027 >
2028 > { TIBBase }
2029 > constructor TIBBase.Create(AOwner: TObject);
2030 > begin
2031 >  FOwner := AOwner;
2032 > end;
2033 >
2034 > destructor TIBBase.Destroy;
2035 > begin
2036 >  SetDatabase(nil);
2037 >  SetTransaction(nil);
2038 >  inherited Destroy;
2039 > end;
2040 >
2041 > function TIBBase.GetDefaultCharSetName: RawByteString;
2042 > begin
2043 >  Result := Database.FDefaultCharSetName;
2044 > end;
2045 >
2046 > function TIBBase.GetDefaultCharSetID: cardinal;
2047 > begin
2048 >  Result := Database.DefaultCharSetID;
2049 > end;
2050 >
2051 > procedure TIBBase.HandleException(Sender: TObject);
2052 > begin
2053 >  if assigned(Database) then
2054 >     Database.HandleException(Sender)
2055 >  else
2056 >     SysUtils.ShowException(ExceptObject,ExceptAddr);
2057 > end;
2058 >
2059 > procedure TIBBase.SetCursor;
2060 > begin
2061 >  if Assigned(Database) and not Database.SQLHourGlass then
2062 >     Exit;
2063 >  if assigned(IBGUIInterface) then
2064 >     IBGUIInterface.SetCursor;
2065 > end;
2066 >
2067 > procedure TIBBase.RestoreCursor;
2068 > begin
2069 >  if Assigned(Database) and not Database.SQLHourGlass then
2070 >     Exit;
2071 >  if assigned(IBGUIInterface) then
2072 >     IBGUIInterface.RestoreCursor;
2073 > end;
2074 >
2075 > procedure TIBBase.CheckDatabase;
2076 > begin
2077 >  if (FDatabase = nil) then
2078 >    IBError(ibxeDatabaseNotAssigned, [nil]);
2079 >  FDatabase.CheckActive;
2080 > end;
2081 >
2082 > procedure TIBBase.CheckTransaction;
2083 > begin
2084 >  if FTransaction = nil then
2085 >    IBError(ibxeTransactionNotAssigned, [nil]);
2086 >  FTransaction.CheckInTransaction;
2087 > end;
2088 >
2089 > function TIBBase.GetDBHandle: PISC_DB_HANDLE;
2090 > begin
2091 >  CheckDatabase;
2092 >  result := @FDatabase.Handle;
2093 > end;
2094 >
2095 > function TIBBase.GetTRHandle: PISC_TR_HANDLE;
2096 > begin
2097 >  CheckTransaction;
2098 >  result := @FTransaction.Handle;
2099 > end;
2100 >
2101 > procedure TIBBase.DoBeforeDatabaseConnect(DBParams: TStrings; var DBName: string
2102 >  );
2103 > begin
2104 >  if assigned(FBeforeDatabaseConnect) then
2105 >    BeforeDatabaseConnect(self,DBParams,DBName);
2106 > end;
2107 >
2108 > procedure TIBBase.DoAfterDatabaseConnect;
2109 > begin
2110 >  if assigned(FAfterDatabaseConnect) then
2111 >    AfterDatabaseConnect(self);
2112 > end;
2113 >
2114 > procedure TIBBase.DoBeforeDatabaseDisconnect;
2115 > begin
2116 >  if Assigned(BeforeDatabaseDisconnect) then
2117 >    BeforeDatabaseDisconnect(Self);
2118 > end;
2119 >
2120 > procedure TIBBase.DoAfterDatabaseDisconnect;
2121 > begin
2122 >  if Assigned(AfterDatabaseDisconnect) then
2123 >    AfterDatabaseDisconnect(Self);
2124 > end;
2125 >
2126 > procedure TIBBase.DoDatabaseFree;
2127 > begin
2128 >  if Assigned(OnDatabaseFree) then
2129 >    OnDatabaseFree(Self);
2130 >  SetDatabase(nil);
2131 >  SetTransaction(nil);
2132 > end;
2133 >
2134 > procedure TIBBase.DoBeforeTransactionEnd(Action: TTransactionAction);
2135 > begin
2136 >  if Assigned(BeforeTransactionEnd) then
2137 >    BeforeTransactionEnd(Self,Action);
2138 > end;
2139 >
2140 > procedure TIBBase.DoAfterTransactionEnd;
2141 > begin
2142 >  if Assigned(AfterTransactionEnd) then
2143 >    AfterTransactionEnd(Self);
2144 > end;
2145 >
2146 > procedure TIBBase.DoTransactionFree;
2147 > begin
2148 >  if Assigned(OnTransactionFree) then
2149 >    OnTransactionFree(Self);
2150 >  FTransaction := nil;
2151 > end;
2152 >
2153 > procedure TIBBase.DoAfterExecQuery(Sender: TObject);
2154 > begin
2155 >  if FTransaction <> nil then
2156 >    FTransaction.DoAfterExecQuery(Sender);
2157 > end;
2158 >
2159 > procedure TIBBase.DoAfterEdit(Sender: TObject);
2160 > begin
2161 >  if FTransaction <> nil then
2162 >    FTransaction.DoAfterEdit(Sender);
2163 > end;
2164 >
2165 > procedure TIBBase.DoAfterDelete(Sender: TObject);
2166 > begin
2167 >  if FTransaction <> nil then
2168 >    FTransaction.DoAfterDelete(Sender);
2169 > end;
2170 >
2171 > procedure TIBBase.DoAfterInsert(Sender: TObject);
2172 > begin
2173 >  if FTransaction <> nil then
2174 >    FTransaction.DoAfterInsert(Sender);
2175 > end;
2176 >
2177 > procedure TIBBase.DoAfterPost(Sender: TObject);
2178 > begin
2179 >  if FTransaction <> nil then
2180 >    FTransaction.DoAfterPost(Sender);
2181 > end;
2182 >
2183 > procedure TIBBase.SetDatabase(Value: TIBDatabase);
2184 > begin
2185 >  if (FDatabase <> nil) then
2186 >    FDatabase.RemoveSQLObject(FIndexInDatabase);
2187 >  FDatabase := Value;
2188 >  if (FDatabase <> nil) then
2189 >  begin
2190 >    FIndexInDatabase := FDatabase.AddSQLObject(Self);
2191 >    if (FTransaction = nil) then
2192 >      Transaction := FDatabase.FindDefaultTransaction;
2193 >  end;
2194 > end;
2195 >
2196 > procedure TIBBase.SetTransaction(Value: TIBTransaction);
2197 > begin
2198 >  if (FTransaction <> nil) then
2199 >    FTransaction.RemoveSQLObject(FIndexInTransaction);
2200 >  FTransaction := Value;
2201 >  if (FTransaction <> nil) then
2202 >  begin
2203 >    FIndexInTransaction := FTransaction.AddSQLObject(Self);
2204 >    if (FDatabase = nil) then
2205 >      Database := FTransaction.FindDefaultDatabase;
2206 >  end;
2207 > end;
2208 >
2209 > { GenerateDPB -
2210 >  Given a string containing a textual representation
2211 >  of the database parameters, generate a database
2212 >  parameter buffer, and return it and its length
2213 >  in DPB and DPBLength, respectively. }
2214 >
2215 > procedure GenerateDPB(sl: TStrings; var DPB: string; var DPBLength: Short);
2216 > var
2217 >  i, j, pval: Integer;
2218 >  DPBVal: UShort;
2219 >  ParamName, ParamValue: string;
2220 > begin
2221 >  { The DPB is initially empty, with the exception that
2222 >    the DPB version must be the first byte of the string. }
2223 >  DPBLength := 1;
2224 >  DPB := Char(isc_dpb_version1);
2225 >
2226 >  {Iterate through the textual database parameters, constructing
2227 >   a DPB on-the-fly }
2228 >  for i := 0 to sl.Count - 1 do
2229 >  begin
2230 >    { Get the parameter's name and value from the list,
2231 >      and make sure that the name is all lowercase with
2232 >      no leading 'isc_dpb_' prefix
2233 >    }
2234 >    if (Trim(sl.Names[i]) = '') then
2235 >      continue;
2236 >    ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2237 >    ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2238 >    if (Pos(DPBPrefix, ParamName) = 1) then {mbcs ok}
2239 >      Delete(ParamName, 1, Length(DPBPrefix));
2240 >     { We want to translate the parameter name to some Integer
2241 >       value. We do this by scanning through a list of known
2242 >       database parameter names (DPBConstantNames, defined above) }
2243 >    DPBVal := 0;
2244 >    { Find the parameter }
2245 >    for j := 1 to isc_dpb_last_dpb_constant do
2246 >      if (ParamName = DPBConstantNames[j]) then
2247 >      begin
2248 >        DPBVal := j;
2249 >        break;
2250 >      end;
2251 >     {  A database parameter either contains a string value (case 1)
2252 >       or an Integer value (case 2)
2253 >       or no value at all (case 3)
2254 >       or an error needs to be generated (case else)  }
2255 >    case DPBVal of
2256 >      isc_dpb_user_name, isc_dpb_password, isc_dpb_password_enc,
2257 >      isc_dpb_sys_user_name, isc_dpb_license, isc_dpb_encrypt_key,
2258 >      isc_dpb_lc_messages, isc_dpb_lc_ctype,
2259 >      isc_dpb_sql_role_name, isc_dpb_sql_dialect:
2260 >      begin
2261 >        if DPBVal = isc_dpb_sql_dialect then
2262 >          ParamValue[1] := Char(Ord(ParamValue[1]) - 48);
2263 >        DPB := DPB +
2264 >               Char(DPBVal) +
2265 >               Char(Length(ParamValue)) +
2266 >               ParamValue;
2267 >        Inc(DPBLength, 2 + Length(ParamValue));
2268 >      end;
2269 >      isc_dpb_num_buffers, isc_dpb_dbkey_scope, isc_dpb_force_write,
2270 >      isc_dpb_no_reserve, isc_dpb_damaged, isc_dpb_verify:
2271 >      begin
2272 >        DPB := DPB +
2273 >               Char(DPBVal) +
2274 >               #1 +
2275 >               Char(StrToInt(ParamValue));
2276 >        Inc(DPBLength, 3);
2277 >      end;
2278 >      isc_dpb_sweep:
2279 >      begin
2280 >        DPB := DPB +
2281 >               Char(DPBVal) +
2282 >               #1 +
2283 >               Char(isc_dpb_records);
2284 >        Inc(DPBLength, 3);
2285 >      end;
2286 >      isc_dpb_sweep_interval:
2287 >      begin
2288 >        pval := StrToInt(ParamValue);
2289 >        DPB := DPB +
2290 >               Char(DPBVal) +
2291 >               #4 +
2292 >               PChar(@pval)[0] +
2293 >               PChar(@pval)[1] +
2294 >               PChar(@pval)[2] +
2295 >               PChar(@pval)[3];
2296 >        Inc(DPBLength, 6);
2297 >      end;
2298 >      isc_dpb_activate_shadow, isc_dpb_delete_shadow, isc_dpb_begin_log,
2299 >      isc_dpb_quit_log:
2300 >      begin
2301 >        DPB := DPB +
2302 >               Char(DPBVal) +
2303 >               #1 + #0;
2304 >        Inc(DPBLength, 3);
2305 >      end;
2306 >      else
2307 >      begin
2308 >        if (DPBVal > 0) and
2309 >           (DPBVal <= isc_dpb_last_dpb_constant) then
2310 >          IBError(ibxeDPBConstantNotSupported, [DPBConstantNames[DPBVal]])
2311 >        else
2312 >          IBError(ibxeDPBConstantUnknownEx, [sl.Names[i]]);
2313 >      end;
2314 >    end;
2315 >  end;
2316 > end;
2317 >
2318 > { GenerateTPB -
2319 >  Given a string containing a textual representation
2320 >  of the transaction parameters, generate a transaction
2321 >  parameter buffer, and return it and its length in
2322 >  TPB and TPBLength, respectively. }
2323 > procedure GenerateTPB(sl: TStrings; var TPB: string; var TPBLength: Short);
2324 > var
2325 >  i, j, TPBVal, ParamLength: Integer;
2326 >  ParamName, ParamValue: string;
2327 > begin
2328 >  TPB := '';
2329 >  if (sl.Count = 0) then
2330 >    TPBLength := 0
2331 >  else
2332 >  begin
2333 >    TPBLength := sl.Count + 1;
2334 >    TPB := TPB + Char(isc_tpb_version3);
2335 >  end;
2336 >  for i := 0 to sl.Count - 1 do
2337 >  begin
2338 >    if (Trim(sl[i]) =  '') then
2339 >    begin
2340 >      Dec(TPBLength);
2341 >      Continue;
2342 >    end;
2343 >    if (Pos('=', sl[i]) = 0) then {mbcs ok}
2344 >      ParamName := LowerCase(sl[i]) {mbcs ok}
2345 >    else
2346 >    begin
2347 >      ParamName := LowerCase(sl.Names[i]); {mbcs ok}
2348 >      ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
2349 >    end;
2350 >    if (Pos(TPBPrefix, ParamName) = 1) then {mbcs ok}
2351 >      Delete(ParamName, 1, Length(TPBPrefix));
2352 >    TPBVal := 0;
2353 >    { Find the parameter }
2354 >    for j := 1 to isc_tpb_last_tpb_constant do
2355 >      if (ParamName = TPBConstantNames[j]) then
2356 >      begin
2357 >        TPBVal := j;
2358 >        break;
2359 >      end;
2360 >    { Now act on it }
2361 >    case TPBVal of
2362 >      isc_tpb_consistency, isc_tpb_exclusive, isc_tpb_protected,
2363 >      isc_tpb_concurrency, isc_tpb_shared, isc_tpb_wait, isc_tpb_nowait,
2364 >      isc_tpb_read, isc_tpb_write, isc_tpb_ignore_limbo,
2365 >      isc_tpb_read_committed, isc_tpb_rec_version, isc_tpb_no_rec_version:
2366 >        TPB := TPB + Char(TPBVal);
2367 >      isc_tpb_lock_read, isc_tpb_lock_write:
2368 >      begin
2369 >        TPB := TPB + Char(TPBVal);
2370 >        { Now set the string parameter }
2371 >        ParamLength := Length(ParamValue);
2372 >        Inc(TPBLength, ParamLength + 1);
2373 >        TPB := TPB + Char(ParamLength) + ParamValue;
2374 >      end;
2375 >      else
2376 >      begin
2377 >        if (TPBVal > 0) and
2378 >           (TPBVal <= isc_tpb_last_tpb_constant) then
2379 >          IBError(ibxeTPBConstantNotSupported, [TPBConstantNames[TPBVal]])
2380 >        else
2381 >          IBError(ibxeTPBConstantUnknownEx, [sl.Names[i]]);
2382 >      end;
2383 >    end;
2384 >  end;
2385 > end;
2386 >
2387 > end.
2388 >
2389 >
2390 >
2391 >
2392 >

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines