1 |
{************************************************************************}
|
2 |
{ }
|
3 |
{ Borland Delphi Visual Component Library }
|
4 |
{ InterBase Express core components }
|
5 |
{ }
|
6 |
{ Copyright (c) 1998-2000 Inprise Corporation }
|
7 |
{ }
|
8 |
{ InterBase Express is based in part on the product }
|
9 |
{ Free IB Components, written by Gregory H. Deatz for }
|
10 |
{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
|
11 |
{ Free IB Components is used under license. }
|
12 |
{ }
|
13 |
{ The contents of this file are subject to the InterBase }
|
14 |
{ Public License Version 1.0 (the "License"); you may not }
|
15 |
{ use this file except in compliance with the License. You }
|
16 |
{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
|
17 |
{ Software distributed under the License is distributed on }
|
18 |
{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
|
19 |
{ express or implied. See the License for the specific language }
|
20 |
{ governing rights and limitations under the License. }
|
21 |
{ The Original Code was created by InterBase Software Corporation }
|
22 |
{ and its successors. }
|
23 |
{ Portions created by Inprise Corporation are Copyright (C) Inprise }
|
24 |
{ Corporation. All Rights Reserved. }
|
25 |
{ Contributor(s): Jeff Overcash }
|
26 |
{ }
|
27 |
{ IBX For Lazarus (Firebird Express) }
|
28 |
{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
|
29 |
{ Portions created by MWA Software are copyright McCallum Whyman }
|
30 |
{ Associates Ltd 2011 }
|
31 |
{ }
|
32 |
{************************************************************************}
|
33 |
|
34 |
unit IBDatabase;
|
35 |
|
36 |
{$Mode Delphi}
|
37 |
|
38 |
{$codepage UTF8}
|
39 |
|
40 |
interface
|
41 |
|
42 |
uses
|
43 |
{$IFDEF WINDOWS }
|
44 |
Windows,
|
45 |
{$ELSE}
|
46 |
unix,
|
47 |
{$ENDIF}
|
48 |
SysUtils, Classes, FPTimer, IBExternals, DB, IB, CustApp, IBTypes;
|
49 |
|
50 |
const
|
51 |
DPBPrefix = 'isc_dpb_';
|
52 |
DPBConstantNames: array[1..isc_dpb_last_dpb_constant] of string = (
|
53 |
'cdd_pathname',
|
54 |
'allocation',
|
55 |
'journal',
|
56 |
'page_size',
|
57 |
'num_buffers',
|
58 |
'buffer_length',
|
59 |
'debug',
|
60 |
'garbage_collect',
|
61 |
'verify',
|
62 |
'sweep',
|
63 |
'enable_journal',
|
64 |
'disable_journal',
|
65 |
'dbkey_scope',
|
66 |
'number_of_users',
|
67 |
'trace',
|
68 |
'no_garbage_collect',
|
69 |
'damaged',
|
70 |
'license',
|
71 |
'sys_user_name',
|
72 |
'encrypt_key',
|
73 |
'activate_shadow',
|
74 |
'sweep_interval',
|
75 |
'delete_shadow',
|
76 |
'force_write',
|
77 |
'begin_log',
|
78 |
'quit_log',
|
79 |
'no_reserve',
|
80 |
'user_name',
|
81 |
'password',
|
82 |
'password_enc',
|
83 |
'sys_user_name_enc',
|
84 |
'interp',
|
85 |
'online_dump',
|
86 |
'old_file_size',
|
87 |
'old_num_files',
|
88 |
'old_file',
|
89 |
'old_start_page',
|
90 |
'old_start_seqno',
|
91 |
'old_start_file',
|
92 |
'drop_walfile',
|
93 |
'old_dump_id',
|
94 |
'wal_backup_dir',
|
95 |
'wal_chkptlen',
|
96 |
'wal_numbufs',
|
97 |
'wal_bufsize',
|
98 |
'wal_grp_cmt_wait',
|
99 |
'lc_messages',
|
100 |
'lc_ctype',
|
101 |
'cache_manager',
|
102 |
'shutdown',
|
103 |
'online',
|
104 |
'shutdown_delay',
|
105 |
'reserved',
|
106 |
'overwrite',
|
107 |
'sec_attach',
|
108 |
'disable_wal',
|
109 |
'connect_timeout',
|
110 |
'dummy_packet_interval',
|
111 |
'gbak_attach',
|
112 |
'sql_role_name',
|
113 |
'set_page_buffers',
|
114 |
'working_directory',
|
115 |
'sql_dialect',
|
116 |
'set_db_readonly',
|
117 |
'set_db_sql_dialect',
|
118 |
'gfix_attach',
|
119 |
'gstat_attach',
|
120 |
'set_db_charset',
|
121 |
'gsec_attach',
|
122 |
'address_path' ,
|
123 |
'process_id',
|
124 |
'no_db_triggers',
|
125 |
'trusted_auth',
|
126 |
'process_name',
|
127 |
'trusted_role',
|
128 |
'org_filename',
|
129 |
'utf8_ilename',
|
130 |
'ext_call_depth'
|
131 |
);
|
132 |
|
133 |
TPBPrefix = 'isc_tpb_';
|
134 |
TPBConstantNames: array[1..isc_tpb_last_tpb_constant] of string = (
|
135 |
'consistency',
|
136 |
'concurrency',
|
137 |
'shared',
|
138 |
'protected',
|
139 |
'exclusive',
|
140 |
'wait',
|
141 |
'nowait',
|
142 |
'read',
|
143 |
'write',
|
144 |
'lock_read',
|
145 |
'lock_write',
|
146 |
'verb_time',
|
147 |
'commit_time',
|
148 |
'ignore_limbo',
|
149 |
'read_committed',
|
150 |
'autocommit',
|
151 |
'rec_version',
|
152 |
'no_rec_version',
|
153 |
'restart_requests',
|
154 |
'no_auto_undo',
|
155 |
'lock_timeout'
|
156 |
);
|
157 |
|
158 |
type
|
159 |
|
160 |
TIBDatabase = class;
|
161 |
TIBTransaction = class;
|
162 |
TIBBase = class;
|
163 |
|
164 |
TIBDatabaseLoginEvent = procedure(Database: TIBDatabase;
|
165 |
LoginParams: TStrings) of object;
|
166 |
|
167 |
TIBFileName = type string;
|
168 |
{ TIBDatabase }
|
169 |
TIBDataBase = class(TCustomConnection)
|
170 |
private
|
171 |
FAttachment: IAttachment;
|
172 |
FCreateDatabase: boolean;
|
173 |
FCreateIfNotExists: boolean;
|
174 |
FDefaultCharSetID: integer;
|
175 |
FDefaultCharSetName: RawByteString;
|
176 |
FDefaultCodePage: TSystemCodePage;
|
177 |
FDPB: IDPB;
|
178 |
FAllowStreamedConnected: boolean;
|
179 |
FHiddenPassword: string;
|
180 |
FOnCreateDatabase: TNotifyEvent;
|
181 |
FOnLogin: TIBDatabaseLoginEvent;
|
182 |
FSQLHourGlass: Boolean;
|
183 |
FTraceFlags: TTraceFlags;
|
184 |
FDBSQLDialect: Integer;
|
185 |
FSQLDialect: Integer;
|
186 |
FOnDialectDowngradeWarning: TNotifyEvent;
|
187 |
FSQLObjects: TList;
|
188 |
FTransactions: TList;
|
189 |
FDBName: TIBFileName;
|
190 |
FDBParams: TStrings;
|
191 |
FDBParamsChanged: Boolean;
|
192 |
FOnIdleTimer: TNotifyEvent;
|
193 |
FDefaultTransaction: TIBTransaction;
|
194 |
FInternalTransaction: TIBTransaction;
|
195 |
FTimer: TFPTimer;
|
196 |
FUserNames: TStringList;
|
197 |
FDataSets: TList;
|
198 |
FLoginCalled: boolean;
|
199 |
FUseDefaultSystemCodePage: boolean;
|
200 |
procedure EnsureInactive;
|
201 |
function GetDBSQLDialect: Integer;
|
202 |
function GetSQLDialect: Integer;
|
203 |
procedure SetSQLDialect(const Value: Integer);
|
204 |
procedure ValidateClientSQLDialect;
|
205 |
procedure DBParamsChange(Sender: TObject);
|
206 |
procedure DBParamsChanging(Sender: TObject);
|
207 |
function GetSQLObject(Index: Integer): TIBBase;
|
208 |
function GetSQLObjectCount: Integer;
|
209 |
function GetIdleTimer: Integer;
|
210 |
function GetTransaction(Index: Integer): TIBTransaction;
|
211 |
function GetTransactionCount: Integer;
|
212 |
function Login(var aDatabaseName: string): Boolean;
|
213 |
procedure SetDatabaseName(const Value: TIBFileName);
|
214 |
procedure SetDBParamByDPB(const Idx: Integer; Value: String);
|
215 |
procedure SetDBParams(Value: TStrings);
|
216 |
procedure SetDefaultTransaction(Value: TIBTransaction);
|
217 |
procedure SetIdleTimer(Value: Integer);
|
218 |
procedure TimeoutConnection(Sender: TObject);
|
219 |
function GetIsReadOnly: Boolean;
|
220 |
function AddSQLObject(ds: TIBBase): Integer;
|
221 |
procedure RemoveSQLObject(Idx: Integer);
|
222 |
procedure RemoveSQLObjects;
|
223 |
procedure InternalClose(Force: Boolean);
|
224 |
|
225 |
protected
|
226 |
procedure DoConnect; override;
|
227 |
procedure DoDisconnect; override;
|
228 |
function GetConnected: Boolean; override;
|
229 |
procedure CheckStreamConnect;
|
230 |
procedure HandleException(Sender: TObject);
|
231 |
procedure Notification( AComponent: TComponent; Operation: TOperation); override;
|
232 |
function GetDataset(Index : longint) : TDataset; override;
|
233 |
function GetDataSetCount : Longint; override;
|
234 |
procedure ReadState(Reader: TReader); override;
|
235 |
procedure SetConnected (Value : boolean); override;
|
236 |
public
|
237 |
constructor Create(AOwner: TComponent); override;
|
238 |
destructor Destroy; override;
|
239 |
procedure ApplyUpdates(const DataSets: array of TDataSet);
|
240 |
procedure CloseDataSets;
|
241 |
procedure CheckActive;
|
242 |
procedure CheckInactive;
|
243 |
procedure CreateDatabase; overload;
|
244 |
procedure CreateDatabase(createDatabaseSQL: string); overload;
|
245 |
procedure DropDatabase;
|
246 |
procedure ForceClose;
|
247 |
procedure GetFieldNames(const TableName: string; List: TStrings);
|
248 |
procedure GetTableNames(List: TStrings; SystemTables: Boolean = False);
|
249 |
function IndexOfDBConst(st: String): Integer;
|
250 |
function TestConnected: Boolean;
|
251 |
procedure CheckDatabaseName;
|
252 |
function AddTransaction(TR: TIBTransaction): Integer;
|
253 |
function FindTransaction(TR: TIBTransaction): Integer;
|
254 |
function FindDefaultTransaction(): TIBTransaction;
|
255 |
procedure RemoveTransaction(Idx: Integer);
|
256 |
procedure RemoveTransactions;
|
257 |
|
258 |
property Attachment: IAttachment read FAttachment;
|
259 |
property DBSQLDialect : Integer read FDBSQLDialect;
|
260 |
property IsReadOnly: Boolean read GetIsReadOnly;
|
261 |
property SQLObjectCount: Integer read GetSQLObjectCount;
|
262 |
property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
|
263 |
property TransactionCount: Integer read GetTransactionCount;
|
264 |
property Transactions[Index: Integer]: TIBTransaction read GetTransaction;
|
265 |
property InternalTransaction: TIBTransaction read FInternalTransaction;
|
266 |
property DefaultCharSetName: RawByteString read FDefaultCharSetName;
|
267 |
property DefaultCharSetID: integer read FDefaultCharSetID;
|
268 |
property DefaultCodePage: TSystemCodePage read FDefaultCodePage;
|
269 |
|
270 |
published
|
271 |
property Connected;
|
272 |
property CreateIfNotExists: boolean read FCreateIfNotExists write FCreateIfNotExists;
|
273 |
property AllowStreamedConnected: boolean read FAllowStreamedConnected
|
274 |
write FAllowStreamedConnected;
|
275 |
property DatabaseName: TIBFileName read FDBName write SetDatabaseName;
|
276 |
property Params: TStrings read FDBParams write SetDBParams;
|
277 |
property LoginPrompt default True;
|
278 |
property DefaultTransaction: TIBTransaction read FDefaultTransaction
|
279 |
write SetDefaultTransaction;
|
280 |
property IdleTimer: Integer read GetIdleTimer write SetIdleTimer;
|
281 |
property SQLDialect : Integer read GetSQLDialect write SetSQLDialect default 3;
|
282 |
property SQLHourGlass: Boolean read FSQLHourGlass write FSQLHourGlass default true;
|
283 |
property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
|
284 |
property UseDefaultSystemCodePage: boolean read FUseDefaultSystemCodePage
|
285 |
write FUseDefaultSystemCodePage;
|
286 |
property AfterConnect;
|
287 |
property AfterDisconnect;
|
288 |
property BeforeConnect;
|
289 |
property BeforeDisconnect;
|
290 |
property OnCreateDatabase: TNotifyEvent read FOnCreateDatabase write FOnCreateDatabase;
|
291 |
property OnLogin: TIBDatabaseLoginEvent read FOnLogin write FOnLogin;
|
292 |
property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
|
293 |
property OnDialectDowngradeWarning: TNotifyEvent read FOnDialectDowngradeWarning write FOnDialectDowngradeWarning;
|
294 |
end;
|
295 |
|
296 |
TDefaultEndAction = TARollback..TACommit;
|
297 |
|
298 |
{ TIBTransaction }
|
299 |
|
300 |
TIBTransaction = class(TComponent)
|
301 |
private
|
302 |
FTransactionIntf: ITransaction;
|
303 |
FAfterDelete: TNotifyEvent;
|
304 |
FAfterEdit: TNotifyEvent;
|
305 |
FAfterExecQuery: TNotifyEvent;
|
306 |
FAfterInsert: TNotifyEvent;
|
307 |
FAfterPost: TNotifyEvent;
|
308 |
FAfterTransactionEnd: TNotifyEvent;
|
309 |
FBeforeTransactionEnd: TNotifyEvent;
|
310 |
FDatabases : TList;
|
311 |
FOnStartTransaction: TNotifyEvent;
|
312 |
FSQLObjects : TList;
|
313 |
FDefaultDatabase : TIBDatabase;
|
314 |
FOnIdleTimer : TNotifyEvent;
|
315 |
FStreamedActive : Boolean;
|
316 |
FTPB : ITPB;
|
317 |
FTimer : TFPTimer;
|
318 |
FDefaultAction : TDefaultEndAction;
|
319 |
FTRParams : TStrings;
|
320 |
FTRParamsChanged : Boolean;
|
321 |
FInEndTransaction : boolean;
|
322 |
FEndAction : TTransactionAction;
|
323 |
procedure DoBeforeTransactionEnd;
|
324 |
procedure DoAfterTransactionEnd;
|
325 |
procedure DoOnStartTransaction;
|
326 |
procedure DoAfterExecQuery(Sender: TObject);
|
327 |
procedure DoAfterEdit(Sender: TObject);
|
328 |
procedure DoAfterDelete(Sender: TObject);
|
329 |
procedure DoAfterInsert(Sender: TObject);
|
330 |
procedure DoAfterPost(Sender: TObject);
|
331 |
procedure EnsureNotInTransaction;
|
332 |
procedure EndTransaction(Action: TTransactionAction; Force: Boolean);
|
333 |
function GetDatabase(Index: Integer): TIBDatabase;
|
334 |
function GetDatabaseCount: Integer;
|
335 |
function GetSQLObject(Index: Integer): TIBBase;
|
336 |
function GetSQLObjectCount: Integer;
|
337 |
function GetInTransaction: Boolean;
|
338 |
function GetIdleTimer: Integer;
|
339 |
procedure BeforeDatabaseDisconnect(DB: TIBDatabase);
|
340 |
procedure SetActive(Value: Boolean);
|
341 |
procedure SetDefaultDatabase(Value: TIBDatabase);
|
342 |
procedure SetIdleTimer(Value: Integer);
|
343 |
procedure SetTRParams(Value: TStrings);
|
344 |
procedure TimeoutTransaction(Sender: TObject);
|
345 |
procedure TRParamsChange(Sender: TObject);
|
346 |
procedure TRParamsChanging(Sender: TObject);
|
347 |
function AddSQLObject(ds: TIBBase): Integer;
|
348 |
procedure RemoveSQLObject(Idx: Integer);
|
349 |
procedure RemoveSQLObjects;
|
350 |
|
351 |
protected
|
352 |
procedure Loaded; override;
|
353 |
procedure Notification( AComponent: TComponent; Operation: TOperation); override;
|
354 |
|
355 |
public
|
356 |
constructor Create(AOwner: TComponent); override;
|
357 |
destructor Destroy; override;
|
358 |
procedure Commit;
|
359 |
procedure CommitRetaining;
|
360 |
procedure Rollback;
|
361 |
procedure RollbackRetaining;
|
362 |
procedure StartTransaction;
|
363 |
procedure CheckInTransaction;
|
364 |
procedure CheckNotInTransaction;
|
365 |
|
366 |
function AddDatabase(db: TIBDatabase): Integer;
|
367 |
function FindDatabase(db: TIBDatabase): Integer;
|
368 |
function FindDefaultDatabase: TIBDatabase;
|
369 |
function GetEndAction: TTransactionAction;
|
370 |
procedure RemoveDatabase(Idx: Integer);
|
371 |
procedure RemoveDatabases;
|
372 |
procedure CheckDatabasesInList;
|
373 |
|
374 |
property DatabaseCount: Integer read GetDatabaseCount;
|
375 |
property Databases[Index: Integer]: TIBDatabase read GetDatabase;
|
376 |
property SQLObjectCount: Integer read GetSQLObjectCount;
|
377 |
property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
|
378 |
property InTransaction: Boolean read GetInTransaction;
|
379 |
property TransactionIntf: ITransaction read FTransactionIntf;
|
380 |
property TPB: ITPB read FTPB;
|
381 |
published
|
382 |
property Active: Boolean read GetInTransaction write SetActive;
|
383 |
property DefaultDatabase: TIBDatabase read FDefaultDatabase
|
384 |
write SetDefaultDatabase;
|
385 |
property IdleTimer: Integer read GetIdleTimer write SetIdleTimer default 0;
|
386 |
property DefaultAction: TDefaultEndAction read FDefaultAction write FDefaultAction default taCommit;
|
387 |
property Params: TStrings read FTRParams write SetTRParams;
|
388 |
property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
|
389 |
property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd
|
390 |
write FBeforeTransactionEnd;
|
391 |
property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd
|
392 |
write FAfterTransactionEnd;
|
393 |
property OnStartTransaction: TNotifyEvent read FOnStartTransaction
|
394 |
write FOnStartTransaction;
|
395 |
property AfterExecQuery: TNotifyEvent read FAfterExecQuery
|
396 |
write FAfterExecQuery;
|
397 |
property AfterEdit: TNotifyEvent read FAfterEdit write FAfterEdit;
|
398 |
property AfterDelete: TNotifyEvent read FAfterDelete write FAfterDelete;
|
399 |
property AfterInsert: TNotifyEvent read FAfterInsert write FAfterInsert;
|
400 |
property AfterPost: TNotifyEvent read FAfterPost write FAfterPost;
|
401 |
end;
|
402 |
|
403 |
TTransactionEndEvent = procedure(Sender:TObject; Action: TTransactionAction) of object;
|
404 |
TBeforeDatabaseConnectEvent = procedure (Sender: TObject; DBParams: TStrings;
|
405 |
var DBName: string) of object;
|
406 |
|
407 |
{ TIBBase }
|
408 |
|
409 |
{ Virtually all components in IB are "descendents" of TIBBase.
|
410 |
It is to more easily manage the database and transaction
|
411 |
connections. }
|
412 |
TIBBase = class(TObject)
|
413 |
protected
|
414 |
FBeforeDatabaseConnect: TBeforeDatabaseConnectEvent;
|
415 |
FDatabase: TIBDatabase;
|
416 |
FIndexInDatabase: Integer;
|
417 |
FTransaction: TIBTransaction;
|
418 |
FIndexInTransaction: Integer;
|
419 |
FOwner: TObject;
|
420 |
FBeforeDatabaseDisconnect: TNotifyEvent;
|
421 |
FAfterDatabaseDisconnect: TNotifyEvent;
|
422 |
FAfterDatabaseConnect: TNotifyEvent;
|
423 |
FOnDatabaseFree: TNotifyEvent;
|
424 |
FBeforeTransactionEnd: TTransactionEndEvent;
|
425 |
FAfterTransactionEnd: TNotifyEvent;
|
426 |
FOnTransactionFree: TNotifyEvent;
|
427 |
|
428 |
procedure DoBeforeDatabaseConnect(DBParams: TStrings;
|
429 |
var DBName: string); virtual;
|
430 |
procedure DoAfterDatabaseConnect; virtual;
|
431 |
procedure DoBeforeDatabaseDisconnect; virtual;
|
432 |
procedure DoAfterDatabaseDisconnect; virtual;
|
433 |
procedure DoDatabaseFree; virtual;
|
434 |
procedure DoBeforeTransactionEnd(Action: TTransactionAction); virtual;
|
435 |
procedure DoAfterTransactionEnd; virtual;
|
436 |
procedure DoTransactionFree; virtual;
|
437 |
procedure SetDatabase(Value: TIBDatabase); virtual;
|
438 |
procedure SetTransaction(Value: TIBTransaction); virtual;
|
439 |
public
|
440 |
constructor Create(AOwner: TObject);
|
441 |
destructor Destroy; override;
|
442 |
procedure CheckDatabase; virtual;
|
443 |
procedure CheckTransaction; virtual;
|
444 |
procedure DoAfterExecQuery(Sender: TObject); virtual;
|
445 |
procedure DoAfterEdit(Sender: TObject); virtual;
|
446 |
procedure DoAfterDelete(Sender: TObject); virtual;
|
447 |
procedure DoAfterInsert(Sender: TObject); virtual;
|
448 |
procedure DoAfterPost(Sender: TObject); virtual;
|
449 |
procedure HandleException(Sender: TObject);
|
450 |
procedure SetCursor;
|
451 |
procedure RestoreCursor;
|
452 |
public
|
453 |
property BeforeDatabaseConnect: TBeforeDatabaseConnectEvent read FBeforeDatabaseConnect
|
454 |
write FBeforeDatabaseConnect;
|
455 |
property AfterDatabaseConnect: TNotifyEvent read FAfterDatabaseConnect
|
456 |
write FAfterDatabaseConnect;
|
457 |
property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect
|
458 |
write FBeforeDatabaseDisconnect;
|
459 |
property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect
|
460 |
write FAfterDatabaseDisconnect;
|
461 |
property OnDatabaseFree: TNotifyEvent read FOnDatabaseFree write FOnDatabaseFree;
|
462 |
property BeforeTransactionEnd: TTransactionEndEvent read FBeforeTransactionEnd write FBeforeTransactionEnd;
|
463 |
property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd write FAfterTransactionEnd;
|
464 |
property OnTransactionFree: TNotifyEvent read FOnTransactionFree write FOnTransactionFree;
|
465 |
property Database: TIBDatabase read FDatabase
|
466 |
write SetDatabase;
|
467 |
property Owner: TObject read FOwner;
|
468 |
property Transaction: TIBTransaction read FTransaction
|
469 |
write SetTransaction;
|
470 |
end;
|
471 |
|
472 |
function GenerateDPB(sl: TStrings): IDPB;
|
473 |
function GenerateTPB(sl: TStrings): ITPB;
|
474 |
|
475 |
|
476 |
implementation
|
477 |
|
478 |
uses IBSQLMonitor, IBCustomDataSet, IBDatabaseInfo, IBSQL, IBUtils,
|
479 |
typInfo, FBMessages, IBErrorCodes, RegExpr;
|
480 |
|
481 |
{ TIBDatabase }
|
482 |
|
483 |
constructor TIBDataBase.Create(AOwner: TComponent);
|
484 |
begin
|
485 |
inherited Create(AOwner);
|
486 |
LoginPrompt := True;
|
487 |
FSQLObjects := TList.Create;
|
488 |
FTransactions := TList.Create;
|
489 |
FDBName := '';
|
490 |
FDBParams := TStringList.Create;
|
491 |
FSQLHourGlass := true;
|
492 |
if (AOwner <> nil) and
|
493 |
(AOwner is TCustomApplication) and
|
494 |
TCustomApplication(AOWner).ConsoleApplication then
|
495 |
LoginPrompt := false;
|
496 |
FDBParamsChanged := True;
|
497 |
TStringList(FDBParams).OnChange := DBParamsChange;
|
498 |
TStringList(FDBParams).OnChanging := DBParamsChanging;
|
499 |
FDPB := nil;
|
500 |
FUserNames := nil;
|
501 |
FInternalTransaction := TIBTransaction.Create(self);
|
502 |
FInternalTransaction.DefaultDatabase := Self;
|
503 |
FTimer := TFPTimer.Create(Self);
|
504 |
FTimer.Enabled := False;
|
505 |
FTimer.Interval := 0;
|
506 |
FTimer.OnTimer := TimeoutConnection;
|
507 |
FDBSQLDialect := 1;
|
508 |
FSQLDialect := 3;
|
509 |
FTraceFlags := [];
|
510 |
FDataSets := TList.Create;
|
511 |
CheckStreamConnect;
|
512 |
end;
|
513 |
|
514 |
destructor TIBDataBase.Destroy;
|
515 |
var
|
516 |
i: Integer;
|
517 |
begin
|
518 |
IdleTimer := 0;
|
519 |
if FAttachment <> nil then
|
520 |
ForceClose;
|
521 |
for i := 0 to FSQLObjects.Count - 1 do
|
522 |
if FSQLObjects[i] <> nil then
|
523 |
SQLObjects[i].DoDatabaseFree;
|
524 |
RemoveSQLObjects;
|
525 |
RemoveTransactions;
|
526 |
FInternalTransaction.Free;
|
527 |
FDPB := nil;
|
528 |
FDBParams.Free;
|
529 |
FSQLObjects.Free;
|
530 |
FUserNames.Free;
|
531 |
FTransactions.Free;
|
532 |
FDataSets.Free;
|
533 |
inherited Destroy;
|
534 |
end;
|
535 |
|
536 |
procedure TIBDataBase.CheckActive;
|
537 |
begin
|
538 |
if StreamedConnected and (not Connected) then
|
539 |
Loaded;
|
540 |
if FAttachment = nil then
|
541 |
IBError(ibxeDatabaseClosed, [nil]);
|
542 |
end;
|
543 |
|
544 |
procedure TIBDataBase.EnsureInactive;
|
545 |
begin
|
546 |
if csDesigning in ComponentState then
|
547 |
begin
|
548 |
if FAttachment <> nil then
|
549 |
Close;
|
550 |
end
|
551 |
end;
|
552 |
|
553 |
procedure TIBDataBase.CheckInactive;
|
554 |
begin
|
555 |
if FAttachment <> nil then
|
556 |
IBError(ibxeDatabaseOpen, [nil]);
|
557 |
end;
|
558 |
|
559 |
procedure TIBDataBase.CheckDatabaseName;
|
560 |
begin
|
561 |
if (Trim(FDBName) = '') then
|
562 |
IBError(ibxeDatabaseNameMissing, [nil]);
|
563 |
end;
|
564 |
|
565 |
function TIBDataBase.AddSQLObject(ds: TIBBase): Integer;
|
566 |
begin
|
567 |
result := 0;
|
568 |
if (ds.Owner is TIBCustomDataSet) then
|
569 |
FDataSets.Add(ds.Owner);
|
570 |
while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
|
571 |
Inc(result);
|
572 |
if (result = FSQLObjects.Count) then
|
573 |
FSQLObjects.Add(ds)
|
574 |
else
|
575 |
FSQLObjects[result] := ds;
|
576 |
end;
|
577 |
|
578 |
function TIBDataBase.AddTransaction(TR: TIBTransaction): Integer;
|
579 |
begin
|
580 |
result := FindTransaction(TR);
|
581 |
if result <> -1 then
|
582 |
begin
|
583 |
result := -1;
|
584 |
exit;
|
585 |
end;
|
586 |
result := 0;
|
587 |
while (result < FTransactions.Count) and (FTransactions[result] <> nil) do
|
588 |
Inc(result);
|
589 |
if (result = FTransactions.Count) then
|
590 |
FTransactions.Add(TR)
|
591 |
else
|
592 |
FTransactions[result] := TR;
|
593 |
end;
|
594 |
|
595 |
procedure TIBDataBase.DoDisconnect;
|
596 |
begin
|
597 |
if Connected then
|
598 |
InternalClose(False);
|
599 |
FDBSQLDialect := 1;
|
600 |
FDefaultCharSetName := '';
|
601 |
FDefaultCharSetID := 0;
|
602 |
FDefaultCodePage := CP_NONE;
|
603 |
end;
|
604 |
|
605 |
procedure TIBDataBase.CreateDatabase;
|
606 |
begin
|
607 |
CheckInactive;
|
608 |
CheckDatabaseName;
|
609 |
FCreateDatabase := true;
|
610 |
Connected := true;
|
611 |
end;
|
612 |
|
613 |
procedure TIBDataBase.CreateDatabase(createDatabaseSQL: string);
|
614 |
var RegexObj: TRegExpr;
|
615 |
begin
|
616 |
CheckInactive;
|
617 |
FAttachment := FirebirdAPI.CreateDatabase(createDatabaseSQL,FSQLDialect);
|
618 |
RegexObj := TRegExpr.Create;
|
619 |
try
|
620 |
{extact database file spec}
|
621 |
RegexObj.ModifierG := false; {turn off greedy matches}
|
622 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''(.*)''';
|
623 |
if RegexObj.Exec(AnsiUpperCase(createDatabaseSQL)) then
|
624 |
FDBName := system.copy(createDatabaseSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
|
625 |
finally
|
626 |
RegexObj.Free;
|
627 |
end;
|
628 |
if assigned(FOnCreateDatabase) and (FAttachment <> nil) then
|
629 |
OnCreateDatabase(self);
|
630 |
end;
|
631 |
|
632 |
procedure TIBDataBase.DropDatabase;
|
633 |
begin
|
634 |
CheckActive;
|
635 |
FAttachment.DropDatabase;
|
636 |
FAttachment := nil;
|
637 |
end;
|
638 |
|
639 |
procedure TIBDataBase.DBParamsChange(Sender: TObject);
|
640 |
begin
|
641 |
FDBParamsChanged := True;
|
642 |
end;
|
643 |
|
644 |
procedure TIBDataBase.DBParamsChanging(Sender: TObject);
|
645 |
begin
|
646 |
EnsureInactive;
|
647 |
CheckInactive;
|
648 |
end;
|
649 |
|
650 |
function TIBDataBase.FindTransaction(TR: TIBTransaction): Integer;
|
651 |
var
|
652 |
i: Integer;
|
653 |
begin
|
654 |
result := -1;
|
655 |
for i := 0 to FTransactions.Count - 1 do
|
656 |
if TR = Transactions[i] then
|
657 |
begin
|
658 |
result := i;
|
659 |
break;
|
660 |
end;
|
661 |
end;
|
662 |
|
663 |
function TIBDataBase.FindDefaultTransaction: TIBTransaction;
|
664 |
var
|
665 |
i: Integer;
|
666 |
begin
|
667 |
result := FDefaultTransaction;
|
668 |
if result = nil then
|
669 |
begin
|
670 |
for i := 0 to FTransactions.Count - 1 do
|
671 |
if (Transactions[i] <> nil) and
|
672 |
(TIBTransaction(Transactions[i]).DefaultDatabase = self) and
|
673 |
(TIBTransaction(Transactions[i]) <> FInternalTransaction) then
|
674 |
begin
|
675 |
result := TIBTransaction(Transactions[i]);
|
676 |
break;
|
677 |
end;
|
678 |
end;
|
679 |
end;
|
680 |
|
681 |
procedure TIBDataBase.ForceClose;
|
682 |
begin
|
683 |
if Connected then
|
684 |
InternalClose(True);
|
685 |
end;
|
686 |
|
687 |
function TIBDataBase.GetConnected: Boolean;
|
688 |
begin
|
689 |
result := (FAttachment <> nil) and FAttachment.IsConnected;
|
690 |
end;
|
691 |
|
692 |
function TIBDataBase.GetSQLObject(Index: Integer): TIBBase;
|
693 |
begin
|
694 |
result := FSQLObjects[Index];
|
695 |
end;
|
696 |
|
697 |
function TIBDataBase.GetSQLObjectCount: Integer;
|
698 |
var
|
699 |
i: Integer;
|
700 |
begin
|
701 |
result := 0;
|
702 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
703 |
Inc(result);
|
704 |
end;
|
705 |
|
706 |
function TIBDataBase.GetIdleTimer: Integer;
|
707 |
begin
|
708 |
result := FTimer.Interval;
|
709 |
end;
|
710 |
|
711 |
function TIBDataBase.GetTransaction(Index: Integer): TIBTransaction;
|
712 |
begin
|
713 |
result := FTransactions[Index];
|
714 |
end;
|
715 |
|
716 |
function TIBDataBase.GetTransactionCount: Integer;
|
717 |
var
|
718 |
i: Integer;
|
719 |
begin
|
720 |
result := 0;
|
721 |
for i := 0 to FTransactions.Count - 1 do
|
722 |
if FTransactions[i] <> nil then
|
723 |
Inc(result);
|
724 |
end;
|
725 |
|
726 |
function TIBDataBase.IndexOfDBConst(st: String): Integer;
|
727 |
var
|
728 |
i, pos_of_str: Integer;
|
729 |
begin
|
730 |
result := -1;
|
731 |
for i := 0 to Params.Count - 1 do
|
732 |
begin
|
733 |
pos_of_str := Pos(st, AnsiLowerCase(Params[i])); {mbcs ok}
|
734 |
if (pos_of_str = 1) or (pos_of_str = Length(DPBPrefix) + 1) then
|
735 |
begin
|
736 |
result := i;
|
737 |
break;
|
738 |
end;
|
739 |
end;
|
740 |
end;
|
741 |
|
742 |
procedure TIBDataBase.InternalClose(Force: Boolean);
|
743 |
var
|
744 |
i: Integer;
|
745 |
begin
|
746 |
CheckActive;
|
747 |
{ Tell all connected transactions that we're disconnecting.
|
748 |
This is so transactions can commit/rollback, accordingly
|
749 |
}
|
750 |
for i := 0 to FTransactions.Count - 1 do
|
751 |
begin
|
752 |
try
|
753 |
if FTransactions[i] <> nil then
|
754 |
Transactions[i].BeforeDatabaseDisconnect(Self);
|
755 |
except
|
756 |
if not Force then
|
757 |
raise;
|
758 |
end;
|
759 |
end;
|
760 |
for i := 0 to FSQLObjects.Count - 1 do
|
761 |
begin
|
762 |
try
|
763 |
if FSQLObjects[i] <> nil then
|
764 |
SQLObjects[i].DoBeforeDatabaseDisconnect;
|
765 |
except
|
766 |
if not Force then
|
767 |
raise;
|
768 |
end;
|
769 |
end;
|
770 |
|
771 |
FAttachment.Disconnect(Force);
|
772 |
FAttachment := nil;
|
773 |
|
774 |
if not (csDesigning in ComponentState) then
|
775 |
MonitorHook.DBDisconnect(Self);
|
776 |
|
777 |
for i := 0 to FSQLObjects.Count - 1 do
|
778 |
if FSQLObjects[i] <> nil then
|
779 |
SQLObjects[i].DoAfterDatabaseDisconnect;
|
780 |
end;
|
781 |
|
782 |
procedure TIBDataBase.CheckStreamConnect;
|
783 |
var
|
784 |
i: integer;
|
785 |
begin
|
786 |
try
|
787 |
if not (csDesigning in ComponentState) and StreamedConnected and (not Connected) then
|
788 |
begin
|
789 |
for i := 0 to FTransactions.Count - 1 do
|
790 |
if FTransactions[i] <> nil then
|
791 |
begin
|
792 |
with TIBTransaction(FTransactions[i]) do
|
793 |
if not Active then
|
794 |
if FStreamedActive and not InTransaction then
|
795 |
begin
|
796 |
StartTransaction;
|
797 |
FStreamedActive := False;
|
798 |
end;
|
799 |
end;
|
800 |
if (FDefaultTransaction <> nil) and
|
801 |
(FDefaultTransaction.FStreamedActive) and
|
802 |
(not FDefaultTransaction.InTransaction) then
|
803 |
FDefaultTransaction.StartTransaction;
|
804 |
StreamedConnected := False;
|
805 |
end;
|
806 |
except
|
807 |
if csDesigning in ComponentState then
|
808 |
HandleException(Self)
|
809 |
else
|
810 |
raise;
|
811 |
end;
|
812 |
end;
|
813 |
|
814 |
procedure TIBDataBase.HandleException(Sender: TObject);
|
815 |
var aParent: TComponent;
|
816 |
begin
|
817 |
aParent := Owner;
|
818 |
while aParent <> nil do
|
819 |
begin
|
820 |
if aParent is TCustomApplication then
|
821 |
begin
|
822 |
TCustomApplication(aParent).HandleException(Sender);
|
823 |
Exit;
|
824 |
end;
|
825 |
aParent := aParent.Owner;
|
826 |
end;
|
827 |
SysUtils.ShowException(ExceptObject,ExceptAddr);
|
828 |
end;
|
829 |
|
830 |
procedure TIBDataBase.Notification(AComponent: TComponent;
|
831 |
Operation: TOperation);
|
832 |
var
|
833 |
i: Integer;
|
834 |
begin
|
835 |
inherited Notification( AComponent, Operation);
|
836 |
if (Operation = opRemove) and (AComponent = FDefaultTransaction) then
|
837 |
begin
|
838 |
i := FindTransaction(FDefaultTransaction);
|
839 |
if (i <> -1) then
|
840 |
RemoveTransaction(i);
|
841 |
FDefaultTransaction := nil;
|
842 |
end;
|
843 |
end;
|
844 |
|
845 |
function TIBDataBase.Login(var aDatabaseName: string): Boolean;
|
846 |
var
|
847 |
IndexOfUser, IndexOfPassword: Integer;
|
848 |
Username, Password, OldPassword: String;
|
849 |
LoginParams: TStrings;
|
850 |
|
851 |
procedure HidePassword;
|
852 |
var
|
853 |
I: Integer;
|
854 |
IndexAt: Integer;
|
855 |
begin
|
856 |
IndexAt := 0;
|
857 |
for I := 0 to Params.Count -1 do
|
858 |
if Pos('password', LowerCase(Trim(Params.Names[i]))) = 1 then {mbcs ok}
|
859 |
begin
|
860 |
FHiddenPassword := Params.Values[Params.Names[i]];
|
861 |
IndexAt := I;
|
862 |
break;
|
863 |
end;
|
864 |
if IndexAt <> 0 then
|
865 |
Params.Delete(IndexAt);
|
866 |
end;
|
867 |
|
868 |
begin
|
869 |
Result := false;
|
870 |
if FLoginCalled then Exit;
|
871 |
FLoginCalled := true;
|
872 |
try
|
873 |
if Assigned(FOnLogin) and not (csDesigning in ComponentState) then
|
874 |
begin
|
875 |
result := True;
|
876 |
LoginParams := TStringList.Create;
|
877 |
try
|
878 |
LoginParams.Assign(Params);
|
879 |
FOnLogin(Self, LoginParams);
|
880 |
Params.Assign (LoginParams);
|
881 |
aDatabaseName := FDBName;
|
882 |
HidePassword;
|
883 |
finally
|
884 |
LoginParams.Free;
|
885 |
end;
|
886 |
end
|
887 |
else
|
888 |
if assigned(IBGUIInterface) then
|
889 |
begin
|
890 |
IndexOfUser := IndexOfDBConst(DPBConstantNames[isc_dpb_user_name]);
|
891 |
if IndexOfUser <> -1 then
|
892 |
Username := Copy(Params[IndexOfUser],
|
893 |
Pos('=', Params[IndexOfUser]) + 1, {mbcs ok}
|
894 |
Length(Params[IndexOfUser]));
|
895 |
IndexOfPassword := IndexOfDBConst(DPBConstantNames[isc_dpb_password]);
|
896 |
if IndexOfPassword <> -1 then
|
897 |
begin
|
898 |
Password := Copy(Params[IndexOfPassword],
|
899 |
Pos('=', Params[IndexOfPassword]) + 1, {mbcs ok}
|
900 |
Length(Params[IndexOfPassword]));
|
901 |
OldPassword := password;
|
902 |
end;
|
903 |
|
904 |
result := IBGUIInterface.LoginDialogEx(aDatabaseName, Username, Password, False);
|
905 |
if result then
|
906 |
begin
|
907 |
if Username <> '' then
|
908 |
begin
|
909 |
if IndexOfUser = -1 then
|
910 |
Params.Add(DPBConstantNames[isc_dpb_user_name] + '=' + Username)
|
911 |
else
|
912 |
Params[IndexOfUser] := DPBConstantNames[isc_dpb_user_name] +
|
913 |
'=' + Username;
|
914 |
end
|
915 |
else
|
916 |
if IndexOfUser <> -1 then
|
917 |
Params.Delete(IndexOfUser);
|
918 |
if (Password = OldPassword) then
|
919 |
FHiddenPassword := ''
|
920 |
else
|
921 |
begin
|
922 |
FHiddenPassword := Password;
|
923 |
if OldPassword <> '' then
|
924 |
HidePassword;
|
925 |
end;
|
926 |
end;
|
927 |
end
|
928 |
else
|
929 |
if LoginPrompt then
|
930 |
IBError(ibxeNoLoginDialog,[]);
|
931 |
finally
|
932 |
FLoginCalled := false
|
933 |
end;
|
934 |
end;
|
935 |
|
936 |
procedure TIBDataBase.DoConnect;
|
937 |
var
|
938 |
TempDBParams: TStrings;
|
939 |
I: integer;
|
940 |
aDBName: string;
|
941 |
Status: IStatus;
|
942 |
CharSetID: integer;
|
943 |
begin
|
944 |
CheckInactive;
|
945 |
CheckDatabaseName;
|
946 |
if (not LoginPrompt) and (FHiddenPassword <> '') then
|
947 |
begin
|
948 |
FHiddenPassword := '';
|
949 |
FDBParamsChanged := True;
|
950 |
end;
|
951 |
{ Use builtin login prompt if requested }
|
952 |
aDBName := FDBName;
|
953 |
if (LoginPrompt or (csDesigning in ComponentState)) and not Login(aDBName) then
|
954 |
IBError(ibxeOperationCancelled, [nil]);
|
955 |
|
956 |
TempDBParams := TStringList.Create;
|
957 |
try
|
958 |
TempDBParams.Assign(FDBParams);
|
959 |
if UseDefaultSystemCodePage then
|
960 |
begin
|
961 |
{$ifdef WINDOWS}
|
962 |
if FirebirdAPI.CodePage2CharSetID(GetACP,CharSetID) then
|
963 |
TempDBParams.Values['lc_ctype'] := FirebirdAPI.GetCharsetName(CharSetID)
|
964 |
{$else}
|
965 |
if FirebirdAPI.CodePage2CharSetID(DefaultSystemCodePage,CharSetID) then
|
966 |
TempDBParams.Values['lc_ctype'] := FirebirdAPI.GetCharsetName(CharSetID)
|
967 |
{$endif}
|
968 |
else
|
969 |
TempDBParams.Values['lc_ctype'] :='UTF8';
|
970 |
end;
|
971 |
{Opportunity to override defaults}
|
972 |
for i := 0 to FSQLObjects.Count - 1 do
|
973 |
begin
|
974 |
if FSQLObjects[i] <> nil then
|
975 |
SQLObjects[i].DoBeforeDatabaseConnect(TempDBParams,aDBName);
|
976 |
end;
|
977 |
|
978 |
FDefaultCharSetName := AnsiUpperCase(TempDBParams.Values['lc_ctype']);
|
979 |
if FDefaultCharSetName <> '' then
|
980 |
FirebirdAPI.CharSetName2CharSetID(FDefaultCharSetName,FDefaultCharSetID);
|
981 |
FirebirdAPI.CharSetID2CodePage(FDefaultCharSetID,FDefaultCodePage);
|
982 |
{ Generate a new DPB if necessary }
|
983 |
if (FDBParamsChanged or (TempDBParams.Text <> FDBParams.Text)) then
|
984 |
begin
|
985 |
FDBParamsChanged := False;
|
986 |
if (not LoginPrompt and not (csDesigning in ComponentState)) or (FHiddenPassword = '') then
|
987 |
FDPB := GenerateDPB(TempDBParams)
|
988 |
else
|
989 |
begin
|
990 |
TempDBParams.Add('password=' + FHiddenPassword);
|
991 |
FDPB := GenerateDPB(TempDBParams);
|
992 |
end;
|
993 |
end;
|
994 |
finally
|
995 |
TempDBParams.Free;
|
996 |
end;
|
997 |
|
998 |
repeat
|
999 |
if FCreateDatabase then
|
1000 |
begin
|
1001 |
FCreateDatabase := false;
|
1002 |
FAttachment := FirebirdAPI.CreateDatabase(aDBName,FDPB, false);
|
1003 |
if assigned(FOnCreateDatabase) and (FAttachment <> nil) then
|
1004 |
OnCreateDatabase(self);
|
1005 |
end
|
1006 |
else
|
1007 |
FAttachment := FirebirdAPI.OpenDatabase(aDBName,FDPB,false);
|
1008 |
if FAttachment = nil then
|
1009 |
begin
|
1010 |
Status := FirebirdAPI.GetStatus;
|
1011 |
{$IFDEF UNIX}
|
1012 |
if Pos(':',aDBName) = 0 then
|
1013 |
begin
|
1014 |
if ((Status.GetSQLCode = -901) and (Status.GetIBErrorCode = isc_random)) {Access permissions on firebird temp}
|
1015 |
or
|
1016 |
((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_sys_request)) {Security DB Problem}
|
1017 |
or
|
1018 |
((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_psw_attach)) {Security DB Problem}
|
1019 |
or
|
1020 |
((Status.GetSQLCode = -904) and (Status.GetIBErrorCode = isc_lock_dir_access)) {Lock File Problem}
|
1021 |
then
|
1022 |
begin
|
1023 |
aDBName := 'localhost:' + aDBName;
|
1024 |
Continue;
|
1025 |
end
|
1026 |
end;
|
1027 |
{$ENDIF}
|
1028 |
if ((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_io_error)) {Database not found}
|
1029 |
and CreateIfNotExists and not (csDesigning in ComponentState) then
|
1030 |
FCreateDatabase := true
|
1031 |
else
|
1032 |
raise EIBInterBaseError.Create(Status);
|
1033 |
end;
|
1034 |
until FAttachment <> nil;
|
1035 |
if not (csDesigning in ComponentState) then
|
1036 |
FDBName := aDBName; {Synchronise at run time}
|
1037 |
FDBSQLDialect := GetDBSQLDialect;
|
1038 |
ValidateClientSQLDialect;
|
1039 |
for i := 0 to FSQLObjects.Count - 1 do
|
1040 |
begin
|
1041 |
if FSQLObjects[i] <> nil then
|
1042 |
SQLObjects[i].DoAfterDatabaseConnect;
|
1043 |
end;
|
1044 |
if not (csDesigning in ComponentState) then
|
1045 |
MonitorHook.DBConnect(Self);
|
1046 |
end;
|
1047 |
|
1048 |
procedure TIBDataBase.RemoveSQLObject(Idx: Integer);
|
1049 |
var
|
1050 |
ds: TIBBase;
|
1051 |
begin
|
1052 |
if (Idx >= 0) and (FSQLObjects[Idx] <> nil) then
|
1053 |
begin
|
1054 |
ds := SQLObjects[Idx];
|
1055 |
FSQLObjects[Idx] := nil;
|
1056 |
ds.Database := nil;
|
1057 |
if (ds.owner is TDataSet) then
|
1058 |
FDataSets.Remove(TDataSet(ds.Owner));
|
1059 |
end;
|
1060 |
end;
|
1061 |
|
1062 |
procedure TIBDataBase.RemoveSQLObjects;
|
1063 |
var
|
1064 |
i: Integer;
|
1065 |
begin
|
1066 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1067 |
begin
|
1068 |
RemoveSQLObject(i);
|
1069 |
if (TIBBase(FSQLObjects[i]).owner is TDataSet) then
|
1070 |
FDataSets.Remove(TDataSet(TIBBase(FSQLObjects[i]).owner));
|
1071 |
end;
|
1072 |
end;
|
1073 |
|
1074 |
procedure TIBDataBase.RemoveTransaction(Idx: Integer);
|
1075 |
var
|
1076 |
TR: TIBTransaction;
|
1077 |
begin
|
1078 |
if ((Idx >= 0) and (FTransactions[Idx] <> nil)) then
|
1079 |
begin
|
1080 |
TR := Transactions[Idx];
|
1081 |
FTransactions[Idx] := nil;
|
1082 |
TR.RemoveDatabase(TR.FindDatabase(Self));
|
1083 |
if TR = FDefaultTransaction then
|
1084 |
FDefaultTransaction := nil;
|
1085 |
end;
|
1086 |
end;
|
1087 |
|
1088 |
procedure TIBDataBase.RemoveTransactions;
|
1089 |
var
|
1090 |
i: Integer;
|
1091 |
begin
|
1092 |
for i := 0 to FTransactions.Count - 1 do if FTransactions[i] <> nil then
|
1093 |
RemoveTransaction(i);
|
1094 |
end;
|
1095 |
|
1096 |
procedure TIBDataBase.SetDatabaseName( const Value: TIBFileName);
|
1097 |
begin
|
1098 |
if FDBName <> Value then
|
1099 |
begin
|
1100 |
EnsureInactive;
|
1101 |
CheckInactive;
|
1102 |
FDBName := Value;
|
1103 |
end;
|
1104 |
end;
|
1105 |
|
1106 |
procedure TIBDataBase.SetDBParamByDPB( const Idx: Integer; Value: String);
|
1107 |
var
|
1108 |
ConstIdx: Integer;
|
1109 |
begin
|
1110 |
ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
|
1111 |
if (Value = '') then
|
1112 |
begin
|
1113 |
if ConstIdx <> -1 then
|
1114 |
Params.Delete(ConstIdx);
|
1115 |
end
|
1116 |
else
|
1117 |
begin
|
1118 |
if (ConstIdx = -1) then
|
1119 |
Params.Add(DPBConstantNames[Idx] + '=' + Value)
|
1120 |
else
|
1121 |
Params[ConstIdx] := DPBConstantNames[Idx] + '=' + Value;
|
1122 |
end;
|
1123 |
end;
|
1124 |
|
1125 |
procedure TIBDataBase.SetDBParams(Value: TStrings);
|
1126 |
begin
|
1127 |
FDBParams.Assign(Value);
|
1128 |
end;
|
1129 |
|
1130 |
procedure TIBDataBase.SetDefaultTransaction(Value: TIBTransaction);
|
1131 |
var
|
1132 |
i: Integer;
|
1133 |
begin
|
1134 |
if (FDefaultTransaction <> nil) and (FDefaultTransaction <> Value) then
|
1135 |
begin
|
1136 |
i := FindTransaction(FDefaultTransaction);
|
1137 |
if (i <> -1) and (FDefaultTransaction.DefaultDatabase <> self) then
|
1138 |
RemoveTransaction(i);
|
1139 |
end;
|
1140 |
if (Value <> nil) and (FDefaultTransaction <> Value) then
|
1141 |
begin
|
1142 |
Value.AddDatabase(Self);
|
1143 |
AddTransaction(Value);
|
1144 |
end;
|
1145 |
FDefaultTransaction := Value;
|
1146 |
end;
|
1147 |
|
1148 |
procedure TIBDataBase.SetIdleTimer(Value: Integer);
|
1149 |
begin
|
1150 |
if Value < 0 then
|
1151 |
IBError(ibxeTimeoutNegative, [nil])
|
1152 |
else
|
1153 |
if (Value = 0) then
|
1154 |
begin
|
1155 |
FTimer.Enabled := False;
|
1156 |
FTimer.Interval := 0;
|
1157 |
end
|
1158 |
else
|
1159 |
if (Value > 0) then
|
1160 |
begin
|
1161 |
FTimer.Interval := Value;
|
1162 |
if not (csDesigning in ComponentState) then
|
1163 |
FTimer.Enabled := True;
|
1164 |
end;
|
1165 |
end;
|
1166 |
|
1167 |
function TIBDataBase.TestConnected: Boolean;
|
1168 |
var
|
1169 |
DatabaseInfo: TIBDatabaseInfo;
|
1170 |
begin
|
1171 |
result := Connected;
|
1172 |
if result then
|
1173 |
begin
|
1174 |
DatabaseInfo := TIBDatabaseInfo.Create(self);
|
1175 |
try
|
1176 |
DatabaseInfo.Database := self;
|
1177 |
{ poke the server to see if connected }
|
1178 |
if DatabaseInfo.BaseLevel = 0 then ;
|
1179 |
DatabaseInfo.Free;
|
1180 |
except
|
1181 |
ForceClose;
|
1182 |
result := False;
|
1183 |
DatabaseInfo.Free;
|
1184 |
end;
|
1185 |
end;
|
1186 |
end;
|
1187 |
|
1188 |
procedure TIBDataBase.TimeoutConnection(Sender: TObject);
|
1189 |
begin
|
1190 |
if Connected then
|
1191 |
begin
|
1192 |
if not FAttachment.HasActivity then
|
1193 |
begin
|
1194 |
ForceClose;
|
1195 |
if Assigned(FOnIdleTimer) then
|
1196 |
FOnIdleTimer(Self);
|
1197 |
end
|
1198 |
end;
|
1199 |
end;
|
1200 |
|
1201 |
function TIBDataBase.GetIsReadOnly: Boolean;
|
1202 |
var
|
1203 |
DatabaseInfo: TIBDatabaseInfo;
|
1204 |
begin
|
1205 |
DatabaseInfo := TIBDatabaseInfo.Create(self);
|
1206 |
DatabaseInfo.Database := self;
|
1207 |
if (DatabaseInfo.ODSMajorVersion < 10) then
|
1208 |
result := false
|
1209 |
else
|
1210 |
begin
|
1211 |
if (DatabaseInfo.ReadOnly = 0) then
|
1212 |
result := false
|
1213 |
else
|
1214 |
result := true;
|
1215 |
end;
|
1216 |
DatabaseInfo.Free;
|
1217 |
end;
|
1218 |
|
1219 |
function TIBDataBase.GetSQLDialect: Integer;
|
1220 |
begin
|
1221 |
Result := FSQLDialect;
|
1222 |
end;
|
1223 |
|
1224 |
|
1225 |
procedure TIBDataBase.SetSQLDialect( const Value: Integer);
|
1226 |
begin
|
1227 |
if (Value < 1) then IBError(ibxeSQLDialectInvalid, [nil]);
|
1228 |
if ((FAttachment = nil) or (Value <= FDBSQLDialect)) then
|
1229 |
FSQLDialect := Value
|
1230 |
else
|
1231 |
IBError(ibxeSQLDialectInvalid, [nil]);
|
1232 |
end;
|
1233 |
|
1234 |
function TIBDataBase.GetDBSQLDialect: Integer;
|
1235 |
var
|
1236 |
DatabaseInfo: TIBDatabaseInfo;
|
1237 |
begin
|
1238 |
DatabaseInfo := TIBDatabaseInfo.Create(self);
|
1239 |
DatabaseInfo.Database := self;
|
1240 |
result := DatabaseInfo.DBSQLDialect;
|
1241 |
DatabaseInfo.Free;
|
1242 |
end;
|
1243 |
|
1244 |
procedure TIBDataBase.ValidateClientSQLDialect;
|
1245 |
begin
|
1246 |
if (FDBSQLDialect < FSQLDialect) then
|
1247 |
begin
|
1248 |
FSQLDialect := FDBSQLDialect;
|
1249 |
if Assigned (FOnDialectDowngradeWarning) then
|
1250 |
FOnDialectDowngradeWarning(self);
|
1251 |
end;
|
1252 |
end;
|
1253 |
|
1254 |
procedure TIBDataBase.ApplyUpdates( const DataSets: array of TDataSet);
|
1255 |
var
|
1256 |
I: Integer;
|
1257 |
DS: TIBCustomDataSet;
|
1258 |
TR: TIBTransaction;
|
1259 |
begin
|
1260 |
TR := nil;
|
1261 |
for I := 0 to High(DataSets) do
|
1262 |
begin
|
1263 |
DS := TIBCustomDataSet(DataSets[I]);
|
1264 |
if DS.Database <> Self then
|
1265 |
IBError(ibxeUpdateWrongDB, [nil]);
|
1266 |
if TR = nil then
|
1267 |
TR := DS.Transaction;
|
1268 |
if (DS.Transaction <> TR) or (TR = nil) then
|
1269 |
IBError(ibxeUpdateWrongTR, [nil]);
|
1270 |
end;
|
1271 |
TR.CheckInTransaction;
|
1272 |
for I := 0 to High(DataSets) do
|
1273 |
begin
|
1274 |
DS := TIBCustomDataSet(DataSets[I]);
|
1275 |
DS.ApplyUpdates;
|
1276 |
end;
|
1277 |
TR.CommitRetaining;
|
1278 |
end;
|
1279 |
|
1280 |
procedure TIBDataBase.CloseDataSets;
|
1281 |
var
|
1282 |
i: Integer;
|
1283 |
begin
|
1284 |
for i := 0 to DataSetCount - 1 do
|
1285 |
if (DataSets[i] <> nil) then
|
1286 |
DataSets[i].close;
|
1287 |
end;
|
1288 |
|
1289 |
function TIBDataBase.GetDataset(Index: longint): TDataset;
|
1290 |
begin
|
1291 |
if (Index >= 0) and (Index < FDataSets.Count) then
|
1292 |
Result := TDataSet(FDataSets[Index])
|
1293 |
else
|
1294 |
raise Exception.Create('Invalid Index to DataSets');
|
1295 |
end;
|
1296 |
|
1297 |
function TIBDataBase.GetDataSetCount: Longint;
|
1298 |
begin
|
1299 |
Result := FDataSets.Count;
|
1300 |
end;
|
1301 |
|
1302 |
procedure TIBDataBase.ReadState(Reader: TReader);
|
1303 |
begin
|
1304 |
FDBParams.Clear;
|
1305 |
inherited ReadState(Reader);
|
1306 |
end;
|
1307 |
|
1308 |
procedure TIBDataBase.SetConnected(Value: boolean);
|
1309 |
begin
|
1310 |
if StreamedConnected and not AllowStreamedConnected then
|
1311 |
begin
|
1312 |
StreamedConnected := false;
|
1313 |
Value := false
|
1314 |
end;
|
1315 |
inherited SetConnected(Value);
|
1316 |
end;
|
1317 |
|
1318 |
procedure TIBDataBase.GetFieldNames( const TableName: string; List: TStrings);
|
1319 |
var
|
1320 |
Query: TIBSQL;
|
1321 |
begin
|
1322 |
if TableName = '' then
|
1323 |
IBError(ibxeNoTableName, [nil]);
|
1324 |
if not Connected then
|
1325 |
Open;
|
1326 |
if not FInternalTransaction.Active then
|
1327 |
FInternalTransaction.StartTransaction;
|
1328 |
Query := TIBSQL.Create(self);
|
1329 |
try
|
1330 |
Query.GoToFirstRecordOnExecute := False;
|
1331 |
Query.Database := Self;
|
1332 |
Query.Transaction := FInternalTransaction;
|
1333 |
Query.SQL.Text := 'Select R.RDB$FIELD_NAME ' + {do not localize}
|
1334 |
'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
|
1335 |
'where R.RDB$RELATION_NAME = ' + {do not localize}
|
1336 |
'''' +
|
1337 |
FormatIdentifierValue(SQLDialect, TableName) +
|
1338 |
''' ' +
|
1339 |
'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '; {do not localize}
|
1340 |
Query.Prepare;
|
1341 |
Query.ExecQuery;
|
1342 |
with List do
|
1343 |
begin
|
1344 |
BeginUpdate;
|
1345 |
try
|
1346 |
Clear;
|
1347 |
while (not Query.EOF) and Query.Next do
|
1348 |
List.Add(TrimRight(Query.FieldByName('RDB$FIELD_NAME').AsString)); {do not localize}
|
1349 |
finally
|
1350 |
EndUpdate;
|
1351 |
end;
|
1352 |
end;
|
1353 |
finally
|
1354 |
Query.free;
|
1355 |
FInternalTransaction.Commit;
|
1356 |
end;
|
1357 |
end;
|
1358 |
|
1359 |
procedure TIBDataBase.GetTableNames(List: TStrings; SystemTables: Boolean);
|
1360 |
var
|
1361 |
Query : TIBSQL;
|
1362 |
begin
|
1363 |
if not (csReading in ComponentState) then
|
1364 |
begin
|
1365 |
if not Connected then
|
1366 |
Open;
|
1367 |
if not FInternalTransaction.Active then
|
1368 |
FInternalTransaction.StartTransaction;
|
1369 |
Query := TIBSQL.Create(self);
|
1370 |
try
|
1371 |
Query.GoToFirstRecordOnExecute := False;
|
1372 |
Query.Database := Self;
|
1373 |
Query.Transaction := FInternalTransaction;
|
1374 |
if SystemTables then
|
1375 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1376 |
' where RDB$VIEW_BLR is NULL' {do not localize}
|
1377 |
else
|
1378 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1379 |
' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
|
1380 |
Query.Prepare;
|
1381 |
Query.ExecQuery;
|
1382 |
with List do
|
1383 |
begin
|
1384 |
BeginUpdate;
|
1385 |
try
|
1386 |
Clear;
|
1387 |
while (not Query.EOF) and Query.Next do
|
1388 |
List.Add(TrimRight(Query.Fields[0].AsString));
|
1389 |
finally
|
1390 |
EndUpdate;
|
1391 |
end;
|
1392 |
end;
|
1393 |
finally
|
1394 |
Query.Free;
|
1395 |
FInternalTransaction.Commit;
|
1396 |
end;
|
1397 |
end;
|
1398 |
end;
|
1399 |
|
1400 |
{ TIBTransaction }
|
1401 |
|
1402 |
constructor TIBTransaction.Create(AOwner: TComponent);
|
1403 |
begin
|
1404 |
inherited Create(AOwner);
|
1405 |
FDatabases := TList.Create;
|
1406 |
FSQLObjects := TList.Create;
|
1407 |
FTPB := nil;
|
1408 |
FTRParams := TStringList.Create;
|
1409 |
FTRParamsChanged := True;
|
1410 |
TStringList(FTRParams).OnChange := TRParamsChange;
|
1411 |
TStringList(FTRParams).OnChanging := TRParamsChanging;
|
1412 |
FTimer := TFPTimer.Create(Self);
|
1413 |
FTimer.Enabled := False;
|
1414 |
FTimer.Interval := 0;
|
1415 |
FTimer.OnTimer := TimeoutTransaction;
|
1416 |
FDefaultAction := taCommit;
|
1417 |
end;
|
1418 |
|
1419 |
destructor TIBTransaction.Destroy;
|
1420 |
var
|
1421 |
i: Integer;
|
1422 |
begin
|
1423 |
if InTransaction then
|
1424 |
EndTransaction(FDefaultAction, True);
|
1425 |
for i := 0 to FSQLObjects.Count - 1 do
|
1426 |
if FSQLObjects[i] <> nil then
|
1427 |
SQLObjects[i].DoTransactionFree;
|
1428 |
RemoveSQLObjects;
|
1429 |
RemoveDatabases;
|
1430 |
FTPB := nil;
|
1431 |
FTRParams.Free;
|
1432 |
FSQLObjects.Free;
|
1433 |
FDatabases.Free;
|
1434 |
inherited Destroy;
|
1435 |
end;
|
1436 |
|
1437 |
procedure TIBTransaction.CheckDatabasesInList;
|
1438 |
begin
|
1439 |
if GetDatabaseCount = 0 then
|
1440 |
IBError(ibxeNoDatabasesInTransaction, [nil]);
|
1441 |
end;
|
1442 |
|
1443 |
procedure TIBTransaction.CheckInTransaction;
|
1444 |
begin
|
1445 |
if FStreamedActive and (not InTransaction) then
|
1446 |
Loaded;
|
1447 |
if (TransactionIntf = nil) then
|
1448 |
IBError(ibxeNotInTransaction, [nil]);
|
1449 |
end;
|
1450 |
|
1451 |
procedure TIBTransaction.DoBeforeTransactionEnd;
|
1452 |
begin
|
1453 |
if Assigned(FBeforeTransactionEnd) then
|
1454 |
FBeforeTransactionEnd(self);
|
1455 |
end;
|
1456 |
|
1457 |
procedure TIBTransaction.DoAfterTransactionEnd;
|
1458 |
begin
|
1459 |
if Assigned(FAfterTransactionEnd) then
|
1460 |
FAfterTransactionEnd(self);
|
1461 |
end;
|
1462 |
|
1463 |
procedure TIBTransaction.DoOnStartTransaction;
|
1464 |
begin
|
1465 |
if assigned(FOnStartTransaction) then
|
1466 |
OnStartTransaction(self);
|
1467 |
end;
|
1468 |
|
1469 |
procedure TIBTransaction.DoAfterExecQuery(Sender: TObject);
|
1470 |
begin
|
1471 |
if assigned(FAfterExecQuery) then
|
1472 |
AfterExecQuery(Sender);
|
1473 |
end;
|
1474 |
|
1475 |
procedure TIBTransaction.DoAfterEdit(Sender: TObject);
|
1476 |
begin
|
1477 |
if assigned(FAfterEdit) then
|
1478 |
AfterEdit(Sender);
|
1479 |
end;
|
1480 |
|
1481 |
procedure TIBTransaction.DoAfterDelete(Sender: TObject);
|
1482 |
begin
|
1483 |
if assigned(FAfterDelete) then
|
1484 |
AfterDelete(Sender);
|
1485 |
end;
|
1486 |
|
1487 |
procedure TIBTransaction.DoAfterInsert(Sender: TObject);
|
1488 |
begin
|
1489 |
if assigned(FAfterInsert) then
|
1490 |
AfterInsert(Sender);
|
1491 |
end;
|
1492 |
|
1493 |
procedure TIBTransaction.DoAfterPost(Sender: TObject);
|
1494 |
begin
|
1495 |
if assigned(FAfterPost) then
|
1496 |
AfterPost(Sender);
|
1497 |
end;
|
1498 |
|
1499 |
procedure TIBTransaction.EnsureNotInTransaction;
|
1500 |
begin
|
1501 |
if csDesigning in ComponentState then
|
1502 |
begin
|
1503 |
if TransactionIntf <> nil then
|
1504 |
Rollback;
|
1505 |
end;
|
1506 |
end;
|
1507 |
|
1508 |
procedure TIBTransaction.CheckNotInTransaction;
|
1509 |
begin
|
1510 |
if (TransactionIntf <> nil) and TransactionIntf.InTransaction then
|
1511 |
IBError(ibxeInTransaction, [nil]);
|
1512 |
end;
|
1513 |
|
1514 |
function TIBTransaction.AddDatabase(db: TIBDatabase): Integer;
|
1515 |
var
|
1516 |
i: Integer;
|
1517 |
NilFound: Boolean;
|
1518 |
begin
|
1519 |
EnsureNotInTransaction;
|
1520 |
CheckNotInTransaction;
|
1521 |
FTransactionIntf := nil;
|
1522 |
|
1523 |
i := FindDatabase(db);
|
1524 |
if i <> -1 then
|
1525 |
begin
|
1526 |
result := i;
|
1527 |
exit;
|
1528 |
end;
|
1529 |
NilFound := False;
|
1530 |
i := 0;
|
1531 |
while (not NilFound) and (i < FDatabases.Count) do
|
1532 |
begin
|
1533 |
NilFound := (FDatabases[i] = nil);
|
1534 |
if (not NilFound) then
|
1535 |
Inc(i);
|
1536 |
end;
|
1537 |
if (NilFound) then
|
1538 |
begin
|
1539 |
FDatabases[i] := db;
|
1540 |
result := i;
|
1541 |
end
|
1542 |
else
|
1543 |
begin
|
1544 |
result := FDatabases.Count;
|
1545 |
FDatabases.Add(db);
|
1546 |
end;
|
1547 |
end;
|
1548 |
|
1549 |
function TIBTransaction.AddSQLObject(ds: TIBBase): Integer;
|
1550 |
begin
|
1551 |
result := 0;
|
1552 |
while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
|
1553 |
Inc(result);
|
1554 |
if (result = FSQLObjects.Count) then
|
1555 |
FSQLObjects.Add(ds)
|
1556 |
else
|
1557 |
FSQLObjects[result] := ds;
|
1558 |
end;
|
1559 |
|
1560 |
procedure TIBTransaction.Commit;
|
1561 |
begin
|
1562 |
EndTransaction(TACommit, False);
|
1563 |
end;
|
1564 |
|
1565 |
procedure TIBTransaction.CommitRetaining;
|
1566 |
begin
|
1567 |
EndTransaction(TACommitRetaining, False);
|
1568 |
end;
|
1569 |
|
1570 |
procedure TIBTransaction.EndTransaction(Action: TTransactionAction;
|
1571 |
Force: Boolean);
|
1572 |
var
|
1573 |
i: Integer;
|
1574 |
begin
|
1575 |
CheckInTransaction;
|
1576 |
if FInEndTransaction then Exit;
|
1577 |
FInEndTransaction := true;
|
1578 |
FEndAction := Action;
|
1579 |
try
|
1580 |
case Action of
|
1581 |
TARollback, TACommit:
|
1582 |
begin
|
1583 |
DoBeforeTransactionEnd;
|
1584 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1585 |
SQLObjects[i].DoBeforeTransactionEnd(Action);
|
1586 |
if InTransaction then
|
1587 |
begin
|
1588 |
if (Action = TARollback) then
|
1589 |
FTransactionIntf.Rollback(Force)
|
1590 |
else
|
1591 |
try
|
1592 |
FTransactionIntf.Commit;
|
1593 |
except on E: EIBInterBaseError do
|
1594 |
begin
|
1595 |
if Force then
|
1596 |
FTransactionIntf.Rollback(Force)
|
1597 |
else
|
1598 |
raise;
|
1599 |
end;
|
1600 |
end;
|
1601 |
|
1602 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1603 |
SQLObjects[i].DoAfterTransactionEnd;
|
1604 |
DoAfterTransactionEnd;
|
1605 |
end;
|
1606 |
end;
|
1607 |
TACommitRetaining:
|
1608 |
FTransactionIntf.CommitRetaining;
|
1609 |
|
1610 |
TARollbackRetaining:
|
1611 |
FTransactionIntf.RollbackRetaining;
|
1612 |
end;
|
1613 |
if not (csDesigning in ComponentState) then
|
1614 |
begin
|
1615 |
case Action of
|
1616 |
TACommit:
|
1617 |
MonitorHook.TRCommit(Self);
|
1618 |
TARollback:
|
1619 |
MonitorHook.TRRollback(Self);
|
1620 |
TACommitRetaining:
|
1621 |
MonitorHook.TRCommitRetaining(Self);
|
1622 |
TARollbackRetaining:
|
1623 |
MonitorHook.TRRollbackRetaining(Self);
|
1624 |
end;
|
1625 |
end;
|
1626 |
finally
|
1627 |
FInEndTransaction := false
|
1628 |
end;
|
1629 |
end;
|
1630 |
|
1631 |
function TIBTransaction.GetDatabase(Index: Integer): TIBDatabase;
|
1632 |
begin
|
1633 |
result := FDatabases[Index];
|
1634 |
end;
|
1635 |
|
1636 |
function TIBTransaction.GetDatabaseCount: Integer;
|
1637 |
var
|
1638 |
i, Cnt: Integer;
|
1639 |
begin
|
1640 |
result := 0;
|
1641 |
Cnt := FDatabases.Count - 1;
|
1642 |
for i := 0 to Cnt do if FDatabases[i] <> nil then
|
1643 |
Inc(result);
|
1644 |
end;
|
1645 |
|
1646 |
function TIBTransaction.GetSQLObject(Index: Integer): TIBBase;
|
1647 |
begin
|
1648 |
result := FSQLObjects[Index];
|
1649 |
end;
|
1650 |
|
1651 |
function TIBTransaction.GetSQLObjectCount: Integer;
|
1652 |
var
|
1653 |
i, Cnt: Integer;
|
1654 |
begin
|
1655 |
result := 0;
|
1656 |
Cnt := FSQLObjects.Count - 1;
|
1657 |
for i := 0 to Cnt do if FSQLObjects[i] <> nil then
|
1658 |
Inc(result);
|
1659 |
end;
|
1660 |
|
1661 |
function TIBTransaction.GetInTransaction: Boolean;
|
1662 |
begin
|
1663 |
result := (TransactionIntf <> nil) and TransactionIntf.InTransaction;
|
1664 |
end;
|
1665 |
|
1666 |
function TIBTransaction.FindDatabase(db: TIBDatabase): Integer;
|
1667 |
var
|
1668 |
i: Integer;
|
1669 |
begin
|
1670 |
result := -1;
|
1671 |
for i := 0 to FDatabases.Count - 1 do
|
1672 |
if db = TIBDatabase(FDatabases[i]) then
|
1673 |
begin
|
1674 |
result := i;
|
1675 |
break;
|
1676 |
end;
|
1677 |
end;
|
1678 |
|
1679 |
function TIBTransaction.FindDefaultDatabase: TIBDatabase;
|
1680 |
var
|
1681 |
i: Integer;
|
1682 |
begin
|
1683 |
result := FDefaultDatabase;
|
1684 |
if result = nil then
|
1685 |
begin
|
1686 |
for i := 0 to FDatabases.Count - 1 do
|
1687 |
if (TIBDatabase(FDatabases[i]) <> nil) and
|
1688 |
(TIBDatabase(FDatabases[i]).DefaultTransaction = self) then
|
1689 |
begin
|
1690 |
result := TIBDatabase(FDatabases[i]);
|
1691 |
break;
|
1692 |
end;
|
1693 |
end;
|
1694 |
end;
|
1695 |
|
1696 |
function TIBTransaction.GetEndAction: TTransactionAction;
|
1697 |
begin
|
1698 |
if FInEndTransaction then
|
1699 |
Result := FEndAction
|
1700 |
else
|
1701 |
IBError(ibxeIB60feature, [nil])
|
1702 |
end;
|
1703 |
|
1704 |
|
1705 |
function TIBTransaction.GetIdleTimer: Integer;
|
1706 |
begin
|
1707 |
result := FTimer.Interval;
|
1708 |
end;
|
1709 |
|
1710 |
procedure TIBTransaction.Loaded;
|
1711 |
begin
|
1712 |
inherited Loaded;
|
1713 |
end;
|
1714 |
|
1715 |
procedure TIBTransaction.BeforeDatabaseDisconnect(DB: TIBDatabase);
|
1716 |
begin
|
1717 |
if InTransaction then
|
1718 |
EndTransaction(FDefaultAction, True);
|
1719 |
FTransactionIntf := nil;
|
1720 |
end;
|
1721 |
|
1722 |
procedure TIBTransaction.RemoveDatabase(Idx: Integer);
|
1723 |
var
|
1724 |
DB: TIBDatabase;
|
1725 |
begin
|
1726 |
if ((Idx >= 0) and (FDatabases[Idx] <> nil)) then
|
1727 |
begin
|
1728 |
EnsureNotInTransaction;
|
1729 |
CheckNotInTransaction;
|
1730 |
FTransactionIntf := nil;
|
1731 |
|
1732 |
DB := Databases[Idx];
|
1733 |
FDatabases[Idx] := nil;
|
1734 |
DB.RemoveTransaction(DB.FindTransaction(Self));
|
1735 |
if DB = FDefaultDatabase then
|
1736 |
FDefaultDatabase := nil;
|
1737 |
end;
|
1738 |
end;
|
1739 |
|
1740 |
procedure TIBTransaction.RemoveDatabases;
|
1741 |
var
|
1742 |
i: Integer;
|
1743 |
begin
|
1744 |
EnsureNotInTransaction;
|
1745 |
CheckNotInTransaction;
|
1746 |
FTransactionIntf := nil;
|
1747 |
|
1748 |
for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
|
1749 |
RemoveDatabase(i);
|
1750 |
end;
|
1751 |
|
1752 |
procedure TIBTransaction.RemoveSQLObject(Idx: Integer);
|
1753 |
var
|
1754 |
ds: TIBBase;
|
1755 |
begin
|
1756 |
if ((Idx >= 0) and (FSQLObjects[Idx] <> nil)) then
|
1757 |
begin
|
1758 |
ds := SQLObjects[Idx];
|
1759 |
FSQLObjects[Idx] := nil;
|
1760 |
ds.Transaction := nil;
|
1761 |
end;
|
1762 |
end;
|
1763 |
|
1764 |
procedure TIBTransaction.RemoveSQLObjects;
|
1765 |
var
|
1766 |
i: Integer;
|
1767 |
begin
|
1768 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1769 |
RemoveSQLObject(i);
|
1770 |
end;
|
1771 |
|
1772 |
procedure TIBTransaction.Rollback;
|
1773 |
begin
|
1774 |
EndTransaction(TARollback, False);
|
1775 |
end;
|
1776 |
|
1777 |
procedure TIBTransaction.RollbackRetaining;
|
1778 |
begin
|
1779 |
EndTransaction(TARollbackRetaining, False);
|
1780 |
end;
|
1781 |
|
1782 |
procedure TIBTransaction.SetActive(Value: Boolean);
|
1783 |
begin
|
1784 |
if csReading in ComponentState then
|
1785 |
FStreamedActive := Value
|
1786 |
else
|
1787 |
if Value and not InTransaction then
|
1788 |
StartTransaction
|
1789 |
else
|
1790 |
if not Value and InTransaction then
|
1791 |
Rollback;
|
1792 |
end;
|
1793 |
|
1794 |
procedure TIBTransaction.SetDefaultDatabase(Value: TIBDatabase);
|
1795 |
var
|
1796 |
i: integer;
|
1797 |
begin
|
1798 |
if (FDefaultDatabase <> nil) and (FDefaultDatabase <> Value) then
|
1799 |
begin
|
1800 |
i := FDefaultDatabase.FindTransaction(self);
|
1801 |
if (i <> -1) then
|
1802 |
FDefaultDatabase.RemoveTransaction(i);
|
1803 |
end;
|
1804 |
if (Value <> nil) and (FDefaultDatabase <> Value) then
|
1805 |
begin
|
1806 |
Value.AddTransaction(Self);
|
1807 |
AddDatabase(Value);
|
1808 |
for i := 0 to FSQLObjects.Count - 1 do
|
1809 |
if (FSQLObjects[i] <> nil) and
|
1810 |
(TIBBase(FSQLObjects[i]).Database = nil) then
|
1811 |
SetObjectProp(TIBBase(FSQLObjects[i]).Owner, 'Database', Value);
|
1812 |
end;
|
1813 |
FDefaultDatabase := Value;
|
1814 |
end;
|
1815 |
|
1816 |
procedure TIBTransaction.Notification( AComponent: TComponent;
|
1817 |
Operation: TOperation);
|
1818 |
var
|
1819 |
i: Integer;
|
1820 |
begin
|
1821 |
inherited Notification( AComponent, Operation);
|
1822 |
if (Operation = opRemove) and (AComponent = FDefaultDatabase) then
|
1823 |
begin
|
1824 |
i := FindDatabase(FDefaultDatabase);
|
1825 |
if (i <> -1) then
|
1826 |
RemoveDatabase(i);
|
1827 |
FDefaultDatabase := nil;
|
1828 |
end;
|
1829 |
end;
|
1830 |
|
1831 |
procedure TIBTransaction.SetIdleTimer(Value: Integer);
|
1832 |
begin
|
1833 |
if Value < 0 then
|
1834 |
IBError(ibxeTimeoutNegative, [nil])
|
1835 |
else
|
1836 |
if (Value = 0) then
|
1837 |
begin
|
1838 |
FTimer.Enabled := False;
|
1839 |
FTimer.Interval := 0;
|
1840 |
end
|
1841 |
else
|
1842 |
if (Value > 0) then
|
1843 |
begin
|
1844 |
FTimer.Interval := Value;
|
1845 |
if not (csDesigning in ComponentState) then
|
1846 |
FTimer.Enabled := True;
|
1847 |
end;
|
1848 |
end;
|
1849 |
|
1850 |
procedure TIBTransaction.SetTRParams(Value: TStrings);
|
1851 |
begin
|
1852 |
FTRParams.Assign(Value);
|
1853 |
end;
|
1854 |
|
1855 |
procedure TIBTransaction.StartTransaction;
|
1856 |
var
|
1857 |
i: Integer;
|
1858 |
Attachments: array of IAttachment;
|
1859 |
ValidDatabaseCount: integer;
|
1860 |
begin
|
1861 |
CheckNotInTransaction;
|
1862 |
CheckDatabasesInList;
|
1863 |
if TransactionIntf <> nil then
|
1864 |
begin
|
1865 |
TransactionIntf.Start(DefaultAction);
|
1866 |
Exit;
|
1867 |
end;
|
1868 |
|
1869 |
for i := 0 to FDatabases.Count - 1 do
|
1870 |
if FDatabases[i] <> nil then
|
1871 |
begin
|
1872 |
with TIBDatabase(FDatabases[i]) do
|
1873 |
if not Connected then
|
1874 |
if StreamedConnected then
|
1875 |
begin
|
1876 |
Open;
|
1877 |
StreamedConnected := False;
|
1878 |
end
|
1879 |
else
|
1880 |
IBError(ibxeDatabaseClosed, [nil]);
|
1881 |
end;
|
1882 |
if FTRParamsChanged then
|
1883 |
begin
|
1884 |
FTRParamsChanged := False;
|
1885 |
FTPB := GenerateTPB(FTRParams);
|
1886 |
end;
|
1887 |
|
1888 |
ValidDatabaseCount := 0;
|
1889 |
for i := 0 to DatabaseCount - 1 do
|
1890 |
if Databases[i] <> nil then Inc(ValidDatabaseCount);
|
1891 |
|
1892 |
if ValidDatabaseCount = 1 then
|
1893 |
FTransactionIntf := Databases[0].Attachment.StartTransaction(FTPB,DefaultAction)
|
1894 |
else
|
1895 |
begin
|
1896 |
SetLength(Attachments,ValidDatabaseCount);
|
1897 |
for i := 0 to DatabaseCount - 1 do
|
1898 |
if Databases[i] <> nil then
|
1899 |
Attachments[i] := Databases[i].Attachment;
|
1900 |
|
1901 |
FTransactionIntf := FirebirdAPI.StartTransaction(Attachments,FTPB,DefaultAction);
|
1902 |
end;
|
1903 |
|
1904 |
if not (csDesigning in ComponentState) then
|
1905 |
MonitorHook.TRStart(Self);
|
1906 |
DoOnStartTransaction;
|
1907 |
end;
|
1908 |
|
1909 |
procedure TIBTransaction.TimeoutTransaction(Sender: TObject);
|
1910 |
begin
|
1911 |
if InTransaction then
|
1912 |
begin
|
1913 |
if not TransactionIntf.HasActivity then
|
1914 |
begin
|
1915 |
EndTransaction(FDefaultAction, True);
|
1916 |
if Assigned(FOnIdleTimer) then
|
1917 |
FOnIdleTimer(Self);
|
1918 |
end
|
1919 |
end;
|
1920 |
end;
|
1921 |
|
1922 |
procedure TIBTransaction.TRParamsChange(Sender: TObject);
|
1923 |
begin
|
1924 |
FTRParamsChanged := True;
|
1925 |
end;
|
1926 |
|
1927 |
procedure TIBTransaction.TRParamsChanging(Sender: TObject);
|
1928 |
begin
|
1929 |
EnsureNotInTransaction;
|
1930 |
CheckNotInTransaction;
|
1931 |
FTransactionIntf := nil;
|
1932 |
end;
|
1933 |
|
1934 |
{ TIBBase }
|
1935 |
constructor TIBBase.Create(AOwner: TObject);
|
1936 |
begin
|
1937 |
FOwner := AOwner;
|
1938 |
end;
|
1939 |
|
1940 |
destructor TIBBase.Destroy;
|
1941 |
begin
|
1942 |
SetDatabase(nil);
|
1943 |
SetTransaction(nil);
|
1944 |
inherited Destroy;
|
1945 |
end;
|
1946 |
|
1947 |
procedure TIBBase.HandleException(Sender: TObject);
|
1948 |
begin
|
1949 |
if assigned(Database) then
|
1950 |
Database.HandleException(Sender)
|
1951 |
else
|
1952 |
SysUtils.ShowException(ExceptObject,ExceptAddr);
|
1953 |
end;
|
1954 |
|
1955 |
procedure TIBBase.SetCursor;
|
1956 |
begin
|
1957 |
if Assigned(Database) and not Database.SQLHourGlass then
|
1958 |
Exit;
|
1959 |
if assigned(IBGUIInterface) then
|
1960 |
IBGUIInterface.SetCursor;
|
1961 |
end;
|
1962 |
|
1963 |
procedure TIBBase.RestoreCursor;
|
1964 |
begin
|
1965 |
if Assigned(Database) and not Database.SQLHourGlass then
|
1966 |
Exit;
|
1967 |
if assigned(IBGUIInterface) then
|
1968 |
IBGUIInterface.RestoreCursor;
|
1969 |
end;
|
1970 |
|
1971 |
procedure TIBBase.CheckDatabase;
|
1972 |
begin
|
1973 |
if (FDatabase = nil) then
|
1974 |
IBError(ibxeDatabaseNotAssigned, [nil]);
|
1975 |
FDatabase.CheckActive;
|
1976 |
end;
|
1977 |
|
1978 |
procedure TIBBase.CheckTransaction;
|
1979 |
begin
|
1980 |
if FTransaction = nil then
|
1981 |
IBError(ibxeTransactionNotAssigned, [nil]);
|
1982 |
FTransaction.CheckInTransaction;
|
1983 |
end;
|
1984 |
|
1985 |
procedure TIBBase.DoBeforeDatabaseConnect(DBParams: TStrings; var DBName: string
|
1986 |
);
|
1987 |
begin
|
1988 |
if assigned(FBeforeDatabaseConnect) then
|
1989 |
BeforeDatabaseConnect(self,DBParams,DBName);
|
1990 |
end;
|
1991 |
|
1992 |
procedure TIBBase.DoAfterDatabaseConnect;
|
1993 |
begin
|
1994 |
if assigned(FAfterDatabaseConnect) then
|
1995 |
AfterDatabaseConnect(self);
|
1996 |
end;
|
1997 |
|
1998 |
procedure TIBBase.DoBeforeDatabaseDisconnect;
|
1999 |
begin
|
2000 |
if Assigned(BeforeDatabaseDisconnect) then
|
2001 |
BeforeDatabaseDisconnect(Self);
|
2002 |
end;
|
2003 |
|
2004 |
procedure TIBBase.DoAfterDatabaseDisconnect;
|
2005 |
begin
|
2006 |
if Assigned(AfterDatabaseDisconnect) then
|
2007 |
AfterDatabaseDisconnect(Self);
|
2008 |
end;
|
2009 |
|
2010 |
procedure TIBBase.DoDatabaseFree;
|
2011 |
begin
|
2012 |
if Assigned(OnDatabaseFree) then
|
2013 |
OnDatabaseFree(Self);
|
2014 |
SetDatabase(nil);
|
2015 |
SetTransaction(nil);
|
2016 |
end;
|
2017 |
|
2018 |
procedure TIBBase.DoBeforeTransactionEnd(Action: TTransactionAction);
|
2019 |
begin
|
2020 |
if Assigned(BeforeTransactionEnd) then
|
2021 |
BeforeTransactionEnd(Self,Action);
|
2022 |
end;
|
2023 |
|
2024 |
procedure TIBBase.DoAfterTransactionEnd;
|
2025 |
begin
|
2026 |
if Assigned(AfterTransactionEnd) then
|
2027 |
AfterTransactionEnd(Self);
|
2028 |
end;
|
2029 |
|
2030 |
procedure TIBBase.DoTransactionFree;
|
2031 |
begin
|
2032 |
if Assigned(OnTransactionFree) then
|
2033 |
OnTransactionFree(Self);
|
2034 |
FTransaction := nil;
|
2035 |
end;
|
2036 |
|
2037 |
procedure TIBBase.DoAfterExecQuery(Sender: TObject);
|
2038 |
begin
|
2039 |
if FTransaction <> nil then
|
2040 |
FTransaction.DoAfterExecQuery(Sender);
|
2041 |
end;
|
2042 |
|
2043 |
procedure TIBBase.DoAfterEdit(Sender: TObject);
|
2044 |
begin
|
2045 |
if FTransaction <> nil then
|
2046 |
FTransaction.DoAfterEdit(Sender);
|
2047 |
end;
|
2048 |
|
2049 |
procedure TIBBase.DoAfterDelete(Sender: TObject);
|
2050 |
begin
|
2051 |
if FTransaction <> nil then
|
2052 |
FTransaction.DoAfterDelete(Sender);
|
2053 |
end;
|
2054 |
|
2055 |
procedure TIBBase.DoAfterInsert(Sender: TObject);
|
2056 |
begin
|
2057 |
if FTransaction <> nil then
|
2058 |
FTransaction.DoAfterInsert(Sender);
|
2059 |
end;
|
2060 |
|
2061 |
procedure TIBBase.DoAfterPost(Sender: TObject);
|
2062 |
begin
|
2063 |
if FTransaction <> nil then
|
2064 |
FTransaction.DoAfterPost(Sender);
|
2065 |
end;
|
2066 |
|
2067 |
procedure TIBBase.SetDatabase(Value: TIBDatabase);
|
2068 |
begin
|
2069 |
if (FDatabase <> nil) then
|
2070 |
FDatabase.RemoveSQLObject(FIndexInDatabase);
|
2071 |
FDatabase := Value;
|
2072 |
if (FDatabase <> nil) then
|
2073 |
begin
|
2074 |
FIndexInDatabase := FDatabase.AddSQLObject(Self);
|
2075 |
if (FTransaction = nil) then
|
2076 |
Transaction := FDatabase.FindDefaultTransaction;
|
2077 |
end;
|
2078 |
end;
|
2079 |
|
2080 |
procedure TIBBase.SetTransaction(Value: TIBTransaction);
|
2081 |
begin
|
2082 |
if (FTransaction <> nil) then
|
2083 |
FTransaction.RemoveSQLObject(FIndexInTransaction);
|
2084 |
FTransaction := Value;
|
2085 |
if (FTransaction <> nil) then
|
2086 |
begin
|
2087 |
FIndexInTransaction := FTransaction.AddSQLObject(Self);
|
2088 |
if (FDatabase = nil) then
|
2089 |
Database := FTransaction.FindDefaultDatabase;
|
2090 |
end;
|
2091 |
end;
|
2092 |
|
2093 |
{ GenerateDPB -
|
2094 |
Given a string containing a textual representation
|
2095 |
of the database parameters, generate a database
|
2096 |
parameter buffer, and return it and its length
|
2097 |
in DPB and DPBLength, respectively. }
|
2098 |
|
2099 |
function GenerateDPB(sl: TStrings): IDPB;
|
2100 |
var
|
2101 |
i, j: Integer;
|
2102 |
DPBVal: UShort;
|
2103 |
ParamName, ParamValue: string;
|
2104 |
begin
|
2105 |
Result := FirebirdAPI.AllocateDPB;
|
2106 |
|
2107 |
{Iterate through the textual database parameters, constructing
|
2108 |
a DPB on-the-fly }
|
2109 |
for i := 0 to sl.Count - 1 do
|
2110 |
begin
|
2111 |
{ Get the parameter's name and value from the list,
|
2112 |
and make sure that the name is all lowercase with
|
2113 |
no leading 'isc_dpb_' prefix
|
2114 |
}
|
2115 |
if (Trim(sl.Names[i]) = '') then
|
2116 |
continue;
|
2117 |
ParamName := LowerCase(sl.Names[i]); {mbcs ok}
|
2118 |
ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
|
2119 |
if (Pos(DPBPrefix, ParamName) = 1) then {mbcs ok}
|
2120 |
Delete(ParamName, 1, Length(DPBPrefix));
|
2121 |
{ We want to translate the parameter name to some Integer
|
2122 |
value. We do this by scanning through a list of known
|
2123 |
database parameter names (DPBConstantNames, defined above) }
|
2124 |
DPBVal := 0;
|
2125 |
{ Find the parameter }
|
2126 |
for j := 1 to isc_dpb_last_dpb_constant do
|
2127 |
if (ParamName = DPBConstantNames[j]) then
|
2128 |
begin
|
2129 |
DPBVal := j;
|
2130 |
break;
|
2131 |
end;
|
2132 |
{ A database parameter either contains a string value (case 1)
|
2133 |
or an Integer value (case 2)
|
2134 |
or no value at all (case 3)
|
2135 |
or an error needs to be generated (case else) }
|
2136 |
case DPBVal of
|
2137 |
isc_dpb_user_name, isc_dpb_password, isc_dpb_password_enc,
|
2138 |
isc_dpb_sys_user_name, isc_dpb_license, isc_dpb_encrypt_key,
|
2139 |
isc_dpb_lc_messages, isc_dpb_lc_ctype,
|
2140 |
isc_dpb_sql_role_name, isc_dpb_sql_dialect:
|
2141 |
begin
|
2142 |
if DPBVal = isc_dpb_sql_dialect then
|
2143 |
ParamValue[1] := Char(Ord(ParamValue[1]) - 48);
|
2144 |
Result.Add(DPBVal).SetAsString(ParamValue);
|
2145 |
end;
|
2146 |
|
2147 |
isc_dpb_num_buffers, isc_dpb_dbkey_scope, isc_dpb_force_write,
|
2148 |
isc_dpb_no_reserve, isc_dpb_damaged, isc_dpb_verify:
|
2149 |
Result.Add(DPBVal).SetAsByte(byte(ParamValue[1]));
|
2150 |
|
2151 |
isc_dpb_sweep:
|
2152 |
Result.Add(DPBVal).SetAsByte(isc_dpb_records);
|
2153 |
|
2154 |
isc_dpb_sweep_interval:
|
2155 |
Result.Add(DPBVal).SetAsInteger(StrToInt(ParamValue));
|
2156 |
|
2157 |
isc_dpb_activate_shadow, isc_dpb_delete_shadow, isc_dpb_begin_log,
|
2158 |
isc_dpb_quit_log:
|
2159 |
Result.Add(DPBVal).SetAsByte(0);
|
2160 |
else
|
2161 |
begin
|
2162 |
if (DPBVal > 0) and
|
2163 |
(DPBVal <= isc_dpb_last_dpb_constant) then
|
2164 |
IBError(ibxeDPBConstantNotSupported, [DPBConstantNames[DPBVal]])
|
2165 |
else
|
2166 |
IBError(ibxeDPBConstantUnknownEx, [sl.Names[i]]);
|
2167 |
end;
|
2168 |
end;
|
2169 |
end;
|
2170 |
end;
|
2171 |
|
2172 |
{ GenerateTPB -
|
2173 |
Given a string containing a textual representation
|
2174 |
of the transaction parameters, generate a transaction
|
2175 |
parameter buffer, and return it and its length in
|
2176 |
TPB and TPBLength, respectively. }
|
2177 |
function GenerateTPB(sl: TStrings): ITPB;
|
2178 |
var
|
2179 |
i, j, TPBVal: Integer;
|
2180 |
ParamName, ParamValue: string;
|
2181 |
begin
|
2182 |
Result := FirebirdAPI.AllocateTPB;
|
2183 |
for i := 0 to sl.Count - 1 do
|
2184 |
begin
|
2185 |
if (Trim(sl[i]) = '') then
|
2186 |
Continue;
|
2187 |
|
2188 |
if (Pos('=', sl[i]) = 0) then {mbcs ok}
|
2189 |
ParamName := LowerCase(sl[i]) {mbcs ok}
|
2190 |
else
|
2191 |
begin
|
2192 |
ParamName := LowerCase(sl.Names[i]); {mbcs ok}
|
2193 |
ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
|
2194 |
end;
|
2195 |
if (Pos(TPBPrefix, ParamName) = 1) then {mbcs ok}
|
2196 |
Delete(ParamName, 1, Length(TPBPrefix));
|
2197 |
TPBVal := 0;
|
2198 |
{ Find the parameter }
|
2199 |
for j := 1 to isc_tpb_last_tpb_constant do
|
2200 |
if (ParamName = TPBConstantNames[j]) then
|
2201 |
begin
|
2202 |
TPBVal := j;
|
2203 |
break;
|
2204 |
end;
|
2205 |
{ Now act on it }
|
2206 |
case TPBVal of
|
2207 |
isc_tpb_consistency, isc_tpb_exclusive, isc_tpb_protected,
|
2208 |
isc_tpb_concurrency, isc_tpb_shared, isc_tpb_wait, isc_tpb_nowait,
|
2209 |
isc_tpb_read, isc_tpb_write, isc_tpb_ignore_limbo,
|
2210 |
isc_tpb_read_committed, isc_tpb_rec_version, isc_tpb_no_rec_version:
|
2211 |
Result.Add(TPBVal);
|
2212 |
|
2213 |
isc_tpb_lock_read, isc_tpb_lock_write:
|
2214 |
Result.Add(TPBVal).SetAsString(ParamValue);
|
2215 |
|
2216 |
else
|
2217 |
begin
|
2218 |
if (TPBVal > 0) and
|
2219 |
(TPBVal <= isc_tpb_last_tpb_constant) then
|
2220 |
IBError(ibxeTPBConstantNotSupported, [TPBConstantNames[TPBVal]])
|
2221 |
else
|
2222 |
IBError(ibxeTPBConstantUnknownEx, [sl.Names[i]]);
|
2223 |
end;
|
2224 |
end;
|
2225 |
end;
|
2226 |
end;
|
2227 |
|
2228 |
end.
|
2229 |
|
2230 |
|
2231 |
|
2232 |
|
2233 |
|