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 - 2018 }
|
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 |
'auth_block',
|
132 |
'client_version',
|
133 |
'remote_protocol',
|
134 |
'host_name',
|
135 |
'os_user',
|
136 |
'specific_auth_data',
|
137 |
'auth_plugin_list',
|
138 |
'auth_plugin_name',
|
139 |
'config',
|
140 |
'nolinger',
|
141 |
'reset_icu',
|
142 |
'map_attach'
|
143 |
);
|
144 |
|
145 |
TPBPrefix = 'isc_tpb_';
|
146 |
TPBConstantNames: array[1..isc_tpb_last_tpb_constant] of string = (
|
147 |
'consistency',
|
148 |
'concurrency',
|
149 |
'shared',
|
150 |
'protected',
|
151 |
'exclusive',
|
152 |
'wait',
|
153 |
'nowait',
|
154 |
'read',
|
155 |
'write',
|
156 |
'lock_read',
|
157 |
'lock_write',
|
158 |
'verb_time',
|
159 |
'commit_time',
|
160 |
'ignore_limbo',
|
161 |
'read_committed',
|
162 |
'autocommit',
|
163 |
'rec_version',
|
164 |
'no_rec_version',
|
165 |
'restart_requests',
|
166 |
'no_auto_undo',
|
167 |
'lock_timeout'
|
168 |
);
|
169 |
|
170 |
type
|
171 |
|
172 |
TIBDatabase = class;
|
173 |
TIBTransaction = class;
|
174 |
TIBBase = class;
|
175 |
|
176 |
TIBDatabaseLoginEvent = procedure(Database: TIBDatabase;
|
177 |
LoginParams: TStrings) of object;
|
178 |
|
179 |
|
180 |
TIBFileName = type string;
|
181 |
{ TIBDatabase }
|
182 |
TIBDataBase = class(TCustomConnection)
|
183 |
private
|
184 |
type TIBDatabaseCloseActions = (caNormal,caForce, caDropDatabase);
|
185 |
private
|
186 |
FCloseAction: TIBDatabaseCloseActions;
|
187 |
FAttachment: IAttachment;
|
188 |
FConfigOverrides: TStrings;
|
189 |
FCreateDatabase: boolean;
|
190 |
FCreateIfNotExists: boolean;
|
191 |
FAllowStreamedConnected: boolean;
|
192 |
FFirebirdLibraryPathName: TIBFileName;
|
193 |
FHiddenPassword: string;
|
194 |
FOnCreateDatabase: TNotifyEvent;
|
195 |
FOnLogin: TIBDatabaseLoginEvent;
|
196 |
FSQLHourGlass: Boolean;
|
197 |
FTraceFlags: TTraceFlags;
|
198 |
FSQLDialect: Integer;
|
199 |
FOnDialectDowngradeWarning: TNotifyEvent;
|
200 |
FSQLObjects: TList;
|
201 |
FTransactions: TList;
|
202 |
FDBName: TIBFileName;
|
203 |
FDBParams: TStrings;
|
204 |
FDBParamsChanged: Boolean;
|
205 |
FOnIdleTimer: TNotifyEvent;
|
206 |
FDefaultTransaction: TIBTransaction;
|
207 |
FInternalTransaction: TIBTransaction;
|
208 |
FTimer: TFPTimer;
|
209 |
FDataSets: TList;
|
210 |
FLoginCalled: boolean;
|
211 |
FUseDefaultSystemCodePage: boolean;
|
212 |
FUseHiddenPassword: boolean;
|
213 |
FFirebirdAPI: IFirebirdAPI;
|
214 |
procedure EnsureInactive;
|
215 |
function GetAuthenticationMethod: string;
|
216 |
function GetDBSQLDialect: Integer;
|
217 |
function GetDefaultCharSetID: integer;
|
218 |
function GetDefaultCharSetName: AnsiString;
|
219 |
function GetDefaultCodePage: TSystemCodePage;
|
220 |
function GetFirebirdAPI: IFirebirdAPI;
|
221 |
function GetRemoteProtocol: string;
|
222 |
function GetSQLObjectsCount: Integer;
|
223 |
function GetWireCompression: boolean;
|
224 |
procedure SetAttachment(AValue: IAttachment);
|
225 |
procedure SetConfigOverrides(AValue: TStrings);
|
226 |
procedure SetFirebirdLibraryPathName(AValue: TIBFileName);
|
227 |
procedure SetSQLDialect(const Value: Integer);
|
228 |
procedure SetWireCompression(AValue: boolean);
|
229 |
procedure ValidateClientSQLDialect;
|
230 |
procedure DBParamsChange(Sender: TObject);
|
231 |
procedure DBParamsChanging(Sender: TObject);
|
232 |
function GenerateDPB(FirebirdAPI: IFirebirdAPI; sl: TStrings): IDPB;
|
233 |
function GetSQLObject(Index: Integer): TIBBase;
|
234 |
function GetSQLObjectCount: Integer;
|
235 |
function GetIdleTimer: Integer;
|
236 |
function GetTransaction(Index: Integer): TIBTransaction;
|
237 |
function GetTransactionCount: Integer;
|
238 |
function Login(var aDatabaseName: string): Boolean;
|
239 |
procedure SetDatabaseName(const Value: TIBFileName);
|
240 |
procedure SetDBParamByDPB(const Idx: Integer; Value: String);
|
241 |
procedure SetDBParams(Value: TStrings);
|
242 |
procedure SetDefaultTransaction(Value: TIBTransaction);
|
243 |
procedure SetIdleTimer(Value: Integer);
|
244 |
procedure TimeoutConnection(Sender: TObject);
|
245 |
function GetIsReadOnly: Boolean;
|
246 |
function AddSQLObject(ds: TIBBase): Integer;
|
247 |
procedure RemoveSQLObject(Idx: Integer);
|
248 |
procedure RemoveSQLObjects;
|
249 |
procedure InternalClose;
|
250 |
procedure InternalBeforeClose;
|
251 |
procedure InternalAfterClose;
|
252 |
procedure InternalBeforeConnect(aDBParams: TStrings; var aDBName: string;
|
253 |
var aCreateIfNotExists: boolean);
|
254 |
procedure InternalAfterConnect;
|
255 |
procedure DoOnCreateDatabase;
|
256 |
|
257 |
protected
|
258 |
procedure DoConnect; override;
|
259 |
procedure DoDisconnect; override;
|
260 |
function GetConnected: Boolean; override;
|
261 |
procedure CheckStreamConnect;
|
262 |
procedure HandleException(Sender: TObject);
|
263 |
procedure Notification( AComponent: TComponent; Operation: TOperation); override;
|
264 |
function GetDataset(Index : longint) : TDataset; override;
|
265 |
function GetDataSetCount : Longint; override;
|
266 |
procedure ReadState(Reader: TReader); override;
|
267 |
procedure SetConnected (Value : boolean); override;
|
268 |
public
|
269 |
constructor Create(AOwner: TComponent); override;
|
270 |
destructor Destroy; override;
|
271 |
procedure ApplyUpdates(const DataSets: array of TDataSet);
|
272 |
procedure CloseDataSets;
|
273 |
procedure CheckActive;
|
274 |
procedure CheckInactive;
|
275 |
procedure CreateDatabase; overload;
|
276 |
procedure CreateDatabase(createDatabaseSQL: string); overload;
|
277 |
procedure DropDatabase;
|
278 |
procedure ForceClose;
|
279 |
procedure GetFieldNames(const TableName: string; List: TStrings);
|
280 |
procedure GetTableNames(List: TStrings; SystemTables: Boolean = False);
|
281 |
function IndexOfDBConst(st: String): Integer;
|
282 |
function TestConnected: Boolean;
|
283 |
procedure CheckDatabaseName;
|
284 |
function AddTransaction(TR: TIBTransaction): Integer;
|
285 |
function FindTransaction(TR: TIBTransaction): Integer;
|
286 |
function FindDefaultTransaction(): TIBTransaction;
|
287 |
procedure ReConnect;
|
288 |
procedure RemoveTransaction(Idx: Integer);
|
289 |
procedure RemoveTransactions;
|
290 |
|
291 |
property Attachment: IAttachment read FAttachment write SetAttachment;
|
292 |
property FirebirdAPI: IFirebirdAPI read GetFirebirdAPI;
|
293 |
property DBSQLDialect : Integer read GetDBSQLDialect;
|
294 |
property IsReadOnly: Boolean read GetIsReadOnly;
|
295 |
property SQLObjectCount: Integer read GetSQLObjectCount; {ignores nil objects}
|
296 |
property SQLObjectsCount: Integer read GetSQLObjectsCount;
|
297 |
property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
|
298 |
property TransactionCount: Integer read GetTransactionCount;
|
299 |
property Transactions[Index: Integer]: TIBTransaction read GetTransaction;
|
300 |
property InternalTransaction: TIBTransaction read FInternalTransaction;
|
301 |
property DefaultCharSetName: AnsiString read GetDefaultCharSetName;
|
302 |
property DefaultCharSetID: integer read GetDefaultCharSetID;
|
303 |
property DefaultCodePage: TSystemCodePage read GetDefaultCodePage;
|
304 |
property AuthenticationMethod: string read GetAuthenticationMethod;
|
305 |
property RemoteProtocol: string read GetRemoteProtocol;
|
306 |
|
307 |
published
|
308 |
property Connected;
|
309 |
property CreateIfNotExists: boolean read FCreateIfNotExists write FCreateIfNotExists;
|
310 |
property AllowStreamedConnected: boolean read FAllowStreamedConnected
|
311 |
write FAllowStreamedConnected;
|
312 |
property DatabaseName: TIBFileName read FDBName write SetDatabaseName;
|
313 |
property FirebirdLibraryPathName: TIBFileName read FFirebirdLibraryPathName
|
314 |
write SetFirebirdLibraryPathName;
|
315 |
property Params: TStrings read FDBParams write SetDBParams;
|
316 |
property ConfigOverrides: TStrings read FConfigOverrides write SetConfigOverrides;
|
317 |
property LoginPrompt default True;
|
318 |
property DefaultTransaction: TIBTransaction read FDefaultTransaction
|
319 |
write SetDefaultTransaction;
|
320 |
property IdleTimer: Integer read GetIdleTimer write SetIdleTimer;
|
321 |
property SQLDialect : Integer read FSQLDialect write SetSQLDialect default 3;
|
322 |
property SQLHourGlass: Boolean read FSQLHourGlass write FSQLHourGlass default true;
|
323 |
property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
|
324 |
property UseDefaultSystemCodePage: boolean read FUseDefaultSystemCodePage
|
325 |
write FUseDefaultSystemCodePage;
|
326 |
property WireCompression: boolean read GetWireCompression write SetWireCompression
|
327 |
stored false;
|
328 |
property AfterConnect;
|
329 |
property AfterDisconnect;
|
330 |
property BeforeConnect;
|
331 |
property BeforeDisconnect;
|
332 |
property OnCreateDatabase: TNotifyEvent read FOnCreateDatabase write FOnCreateDatabase;
|
333 |
property OnLogin: TIBDatabaseLoginEvent read FOnLogin write FOnLogin;
|
334 |
property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
|
335 |
property OnDialectDowngradeWarning: TNotifyEvent read FOnDialectDowngradeWarning
|
336 |
write FOnDialectDowngradeWarning;
|
337 |
end;
|
338 |
|
339 |
TDefaultEndAction = TARollback..TACommit;
|
340 |
|
341 |
{ TIBTransaction }
|
342 |
|
343 |
TIBTransaction = class(TComponent)
|
344 |
private
|
345 |
FTransactionIntf: ITransaction;
|
346 |
FAfterDelete: TNotifyEvent;
|
347 |
FAfterEdit: TNotifyEvent;
|
348 |
FAfterExecQuery: TNotifyEvent;
|
349 |
FAfterInsert: TNotifyEvent;
|
350 |
FAfterPost: TNotifyEvent;
|
351 |
FAfterTransactionEnd: TNotifyEvent;
|
352 |
FBeforeTransactionEnd: TNotifyEvent;
|
353 |
FDatabases : TList;
|
354 |
FOnStartTransaction: TNotifyEvent;
|
355 |
FSQLObjects : TList;
|
356 |
FDefaultDatabase : TIBDatabase;
|
357 |
FOnIdleTimer : TNotifyEvent;
|
358 |
FStreamedActive : Boolean;
|
359 |
FTPB : ITPB;
|
360 |
FTimer : TFPTimer;
|
361 |
FDefaultAction : TDefaultEndAction;
|
362 |
FTRParams : TStrings;
|
363 |
FTRParamsChanged : Boolean;
|
364 |
FInEndTransaction : boolean;
|
365 |
FEndAction : TTransactionAction;
|
366 |
procedure DoBeforeTransactionEnd;
|
367 |
procedure DoAfterTransactionEnd;
|
368 |
procedure DoOnStartTransaction;
|
369 |
procedure DoAfterExecQuery(Sender: TObject);
|
370 |
procedure DoAfterEdit(Sender: TObject);
|
371 |
procedure DoAfterDelete(Sender: TObject);
|
372 |
procedure DoAfterInsert(Sender: TObject);
|
373 |
procedure DoAfterPost(Sender: TObject);
|
374 |
procedure EnsureNotInTransaction;
|
375 |
procedure EndTransaction(Action: TTransactionAction; Force: Boolean);
|
376 |
function GetDatabase(Index: Integer): TIBDatabase;
|
377 |
function GetDatabaseCount: Integer;
|
378 |
function GetSQLObject(Index: Integer): TIBBase;
|
379 |
function GetSQLObjectCount: Integer;
|
380 |
function GetInTransaction: Boolean;
|
381 |
function GetIdleTimer: Integer;
|
382 |
procedure BeforeDatabaseDisconnect(DB: TIBDatabase);
|
383 |
procedure SetActive(Value: Boolean);
|
384 |
procedure SetDefaultDatabase(Value: TIBDatabase);
|
385 |
procedure SetIdleTimer(Value: Integer);
|
386 |
procedure SetTRParams(Value: TStrings);
|
387 |
procedure TimeoutTransaction(Sender: TObject);
|
388 |
procedure TRParamsChange(Sender: TObject);
|
389 |
procedure TRParamsChanging(Sender: TObject);
|
390 |
function AddSQLObject(ds: TIBBase): Integer;
|
391 |
procedure RemoveSQLObject(Idx: Integer);
|
392 |
procedure RemoveSQLObjects;
|
393 |
function GenerateTPB(FirebirdAPI: IFirebirdAPI; sl: TStrings): ITPB;
|
394 |
|
395 |
protected
|
396 |
procedure Loaded; override;
|
397 |
procedure Notification( AComponent: TComponent; Operation: TOperation); override;
|
398 |
|
399 |
public
|
400 |
constructor Create(AOwner: TComponent); override;
|
401 |
destructor Destroy; override;
|
402 |
procedure Commit;
|
403 |
procedure CommitRetaining;
|
404 |
procedure Rollback;
|
405 |
procedure RollbackRetaining;
|
406 |
procedure StartTransaction;
|
407 |
procedure CheckInTransaction;
|
408 |
procedure CheckNotInTransaction;
|
409 |
|
410 |
function AddDatabase(db: TIBDatabase): Integer;
|
411 |
function FindDatabase(db: TIBDatabase): Integer;
|
412 |
function FindDefaultDatabase: TIBDatabase;
|
413 |
function GetEndAction: TTransactionAction;
|
414 |
procedure RemoveDatabase(Idx: Integer);
|
415 |
procedure RemoveDatabases;
|
416 |
procedure CheckDatabasesInList;
|
417 |
|
418 |
property DatabaseCount: Integer read GetDatabaseCount;
|
419 |
property Databases[Index: Integer]: TIBDatabase read GetDatabase;
|
420 |
property SQLObjectCount: Integer read GetSQLObjectCount;
|
421 |
property SQLObjects[Index: Integer]: TIBBase read GetSQLObject;
|
422 |
property InTransaction: Boolean read GetInTransaction;
|
423 |
property TransactionIntf: ITransaction read FTransactionIntf;
|
424 |
property TPB: ITPB read FTPB;
|
425 |
published
|
426 |
property Active: Boolean read GetInTransaction write SetActive;
|
427 |
property DefaultDatabase: TIBDatabase read FDefaultDatabase
|
428 |
write SetDefaultDatabase;
|
429 |
property IdleTimer: Integer read GetIdleTimer write SetIdleTimer default 0;
|
430 |
property DefaultAction: TDefaultEndAction read FDefaultAction write FDefaultAction default taCommit;
|
431 |
property Params: TStrings read FTRParams write SetTRParams;
|
432 |
property OnIdleTimer: TNotifyEvent read FOnIdleTimer write FOnIdleTimer;
|
433 |
property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd
|
434 |
write FBeforeTransactionEnd;
|
435 |
property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd
|
436 |
write FAfterTransactionEnd;
|
437 |
property OnStartTransaction: TNotifyEvent read FOnStartTransaction
|
438 |
write FOnStartTransaction;
|
439 |
property AfterExecQuery: TNotifyEvent read FAfterExecQuery
|
440 |
write FAfterExecQuery;
|
441 |
property AfterEdit: TNotifyEvent read FAfterEdit write FAfterEdit;
|
442 |
property AfterDelete: TNotifyEvent read FAfterDelete write FAfterDelete;
|
443 |
property AfterInsert: TNotifyEvent read FAfterInsert write FAfterInsert;
|
444 |
property AfterPost: TNotifyEvent read FAfterPost write FAfterPost;
|
445 |
end;
|
446 |
|
447 |
TTransactionEndEvent = procedure(Sender:TObject; Action: TTransactionAction) of object;
|
448 |
TBeforeDatabaseConnectEvent = procedure (Sender: TObject; DBParams: TStrings;
|
449 |
var DBName: string; var CreateIfNotExists: boolean) of object;
|
450 |
|
451 |
{ TIBBase }
|
452 |
|
453 |
{ Virtually all components in IB are "descendents" of TIBBase.
|
454 |
It is to more easily manage the database and transaction
|
455 |
connections. }
|
456 |
TIBBase = class(TObject)
|
457 |
private
|
458 |
FOnCreateDatabase: TNotifyEvent;
|
459 |
protected
|
460 |
FBeforeDatabaseConnect: TBeforeDatabaseConnectEvent;
|
461 |
FDatabase: TIBDatabase;
|
462 |
FIndexInDatabase: Integer;
|
463 |
FTransaction: TIBTransaction;
|
464 |
FIndexInTransaction: Integer;
|
465 |
FOwner: TObject;
|
466 |
FBeforeDatabaseDisconnect: TNotifyEvent;
|
467 |
FAfterDatabaseDisconnect: TNotifyEvent;
|
468 |
FAfterDatabaseConnect: TNotifyEvent;
|
469 |
FOnDatabaseFree: TNotifyEvent;
|
470 |
FBeforeTransactionEnd: TTransactionEndEvent;
|
471 |
FAfterTransactionEnd: TNotifyEvent;
|
472 |
FOnTransactionFree: TNotifyEvent;
|
473 |
|
474 |
procedure DoBeforeDatabaseConnect(DBParams: TStrings;
|
475 |
var DBName: string; var CreateIfNotExists: boolean); virtual;
|
476 |
procedure DoAfterDatabaseConnect; virtual;
|
477 |
procedure DoBeforeDatabaseDisconnect; virtual;
|
478 |
procedure DoAfterDatabaseDisconnect; virtual;
|
479 |
procedure DoOnCreateDatabase; virtual;
|
480 |
procedure DoDatabaseFree; virtual;
|
481 |
procedure DoBeforeTransactionEnd(Action: TTransactionAction); virtual;
|
482 |
procedure DoAfterTransactionEnd; virtual;
|
483 |
procedure DoTransactionFree; virtual;
|
484 |
procedure SetDatabase(Value: TIBDatabase); virtual;
|
485 |
procedure SetTransaction(Value: TIBTransaction); virtual;
|
486 |
public
|
487 |
constructor Create(AOwner: TObject);
|
488 |
destructor Destroy; override;
|
489 |
procedure CheckDatabase; virtual;
|
490 |
procedure CheckTransaction; virtual;
|
491 |
procedure DoAfterExecQuery(Sender: TObject); virtual;
|
492 |
procedure DoAfterEdit(Sender: TObject); virtual;
|
493 |
procedure DoAfterDelete(Sender: TObject); virtual;
|
494 |
procedure DoAfterInsert(Sender: TObject); virtual;
|
495 |
procedure DoAfterPost(Sender: TObject); virtual;
|
496 |
procedure HandleException(Sender: TObject);
|
497 |
procedure SetCursor;
|
498 |
procedure RestoreCursor;
|
499 |
public
|
500 |
property BeforeDatabaseConnect: TBeforeDatabaseConnectEvent read FBeforeDatabaseConnect
|
501 |
write FBeforeDatabaseConnect;
|
502 |
property AfterDatabaseConnect: TNotifyEvent read FAfterDatabaseConnect
|
503 |
write FAfterDatabaseConnect;
|
504 |
property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect
|
505 |
write FBeforeDatabaseDisconnect;
|
506 |
property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect
|
507 |
write FAfterDatabaseDisconnect;
|
508 |
property OnCreateDatabase: TNotifyEvent read FOnCreateDatabase
|
509 |
write FOnCreateDatabase;
|
510 |
property OnDatabaseFree: TNotifyEvent read FOnDatabaseFree write FOnDatabaseFree;
|
511 |
property BeforeTransactionEnd: TTransactionEndEvent read FBeforeTransactionEnd write FBeforeTransactionEnd;
|
512 |
property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd write FAfterTransactionEnd;
|
513 |
property OnTransactionFree: TNotifyEvent read FOnTransactionFree write FOnTransactionFree;
|
514 |
property Database: TIBDatabase read FDatabase
|
515 |
write SetDatabase;
|
516 |
property Owner: TObject read FOwner;
|
517 |
property Transaction: TIBTransaction read FTransaction
|
518 |
write SetTransaction;
|
519 |
end;
|
520 |
|
521 |
|
522 |
implementation
|
523 |
|
524 |
uses IBSQLMonitor, IBCustomDataSet, IBDatabaseInfo, IBSQL, IBUtils,
|
525 |
typInfo, FBMessages, IBErrorCodes {$IFDEF WINDOWS}, Windirs {$ENDIF};
|
526 |
|
527 |
{ TIBDatabase }
|
528 |
|
529 |
constructor TIBDataBase.Create(AOwner: TComponent);
|
530 |
begin
|
531 |
inherited Create(AOwner);
|
532 |
LoginPrompt := True;
|
533 |
FSQLObjects := TList.Create;
|
534 |
FTransactions := TList.Create;
|
535 |
FConfigOverrides := TStringList.Create;
|
536 |
FDBName := '';
|
537 |
FDBParams := TStringList.Create;
|
538 |
FSQLHourGlass := true;
|
539 |
if (AOwner <> nil) and
|
540 |
(AOwner is TCustomApplication) and
|
541 |
TCustomApplication(AOWner).ConsoleApplication then
|
542 |
LoginPrompt := false;
|
543 |
FDBParamsChanged := True;
|
544 |
TStringList(FDBParams).OnChange := DBParamsChange;
|
545 |
TStringList(FDBParams).OnChanging := DBParamsChanging;
|
546 |
FInternalTransaction := TIBTransaction.Create(self);
|
547 |
FInternalTransaction.DefaultDatabase := Self;
|
548 |
FTimer := TFPTimer.Create(Self);
|
549 |
FTimer.Enabled := False;
|
550 |
FTimer.Interval := 0;
|
551 |
FTimer.OnTimer := TimeoutConnection;
|
552 |
FSQLDialect := 3;
|
553 |
FTraceFlags := [];
|
554 |
FDataSets := TList.Create;
|
555 |
CheckStreamConnect;
|
556 |
FCloseAction := caNormal;
|
557 |
end;
|
558 |
|
559 |
destructor TIBDataBase.Destroy;
|
560 |
var
|
561 |
i: Integer;
|
562 |
begin
|
563 |
IdleTimer := 0;
|
564 |
if FAttachment <> nil then
|
565 |
ForceClose;
|
566 |
for i := 0 to FSQLObjects.Count - 1 do
|
567 |
if FSQLObjects[i] <> nil then
|
568 |
SQLObjects[i].DoDatabaseFree;
|
569 |
RemoveSQLObjects;
|
570 |
RemoveTransactions;
|
571 |
FInternalTransaction.Free;
|
572 |
FConfigOverrides.Free;
|
573 |
FDBParams.Free;
|
574 |
FSQLObjects.Free;
|
575 |
FTransactions.Free;
|
576 |
FDataSets.Free;
|
577 |
FFirebirdAPI := nil;
|
578 |
inherited Destroy;
|
579 |
end;
|
580 |
|
581 |
procedure TIBDataBase.CheckActive;
|
582 |
begin
|
583 |
if StreamedConnected and (not Connected) then
|
584 |
Loaded;
|
585 |
if FAttachment = nil then
|
586 |
IBError(ibxeDatabaseClosed, [nil]);
|
587 |
end;
|
588 |
|
589 |
procedure TIBDataBase.EnsureInactive;
|
590 |
begin
|
591 |
if csDesigning in ComponentState then
|
592 |
begin
|
593 |
if FAttachment <> nil then
|
594 |
Close;
|
595 |
end
|
596 |
end;
|
597 |
|
598 |
function TIBDataBase.GetAuthenticationMethod: string;
|
599 |
begin
|
600 |
CheckActive;
|
601 |
Result := Attachment.GetAuthenticationMethod;
|
602 |
end;
|
603 |
|
604 |
procedure TIBDataBase.CheckInactive;
|
605 |
begin
|
606 |
if FAttachment <> nil then
|
607 |
IBError(ibxeDatabaseOpen, [nil]);
|
608 |
end;
|
609 |
|
610 |
procedure TIBDataBase.CheckDatabaseName;
|
611 |
begin
|
612 |
if (Trim(FDBName) = '') then
|
613 |
IBError(ibxeDatabaseNameMissing, [nil]);
|
614 |
end;
|
615 |
|
616 |
function TIBDataBase.AddSQLObject(ds: TIBBase): Integer;
|
617 |
begin
|
618 |
result := 0;
|
619 |
if (ds.Owner is TIBCustomDataSet) then
|
620 |
FDataSets.Add(ds.Owner);
|
621 |
while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
|
622 |
Inc(result);
|
623 |
if (result = FSQLObjects.Count) then
|
624 |
FSQLObjects.Add(ds)
|
625 |
else
|
626 |
FSQLObjects[result] := ds;
|
627 |
end;
|
628 |
|
629 |
function TIBDataBase.AddTransaction(TR: TIBTransaction): Integer;
|
630 |
begin
|
631 |
result := FindTransaction(TR);
|
632 |
if result <> -1 then
|
633 |
begin
|
634 |
result := -1;
|
635 |
exit;
|
636 |
end;
|
637 |
result := 0;
|
638 |
while (result < FTransactions.Count) and (FTransactions[result] <> nil) do
|
639 |
Inc(result);
|
640 |
if (result = FTransactions.Count) then
|
641 |
FTransactions.Add(TR)
|
642 |
else
|
643 |
FTransactions[result] := TR;
|
644 |
end;
|
645 |
|
646 |
procedure TIBDataBase.DoDisconnect;
|
647 |
begin
|
648 |
if Connected then
|
649 |
InternalClose;
|
650 |
end;
|
651 |
|
652 |
procedure TIBDataBase.CreateDatabase;
|
653 |
begin
|
654 |
CheckInactive;
|
655 |
CheckDatabaseName;
|
656 |
FCreateDatabase := true;
|
657 |
Connected := true;
|
658 |
end;
|
659 |
|
660 |
procedure TIBDataBase.CreateDatabase(createDatabaseSQL: string);
|
661 |
begin
|
662 |
CheckInactive;
|
663 |
FAttachment := FirebirdAPI.CreateDatabase(createDatabaseSQL,SQLDialect);
|
664 |
FDBName := Attachment.GetConnectString;
|
665 |
DoOnCreateDatabase;
|
666 |
end;
|
667 |
|
668 |
procedure TIBDataBase.DropDatabase;
|
669 |
begin
|
670 |
if Connected then
|
671 |
begin
|
672 |
FCloseAction := caDropDatabase;
|
673 |
try
|
674 |
Connected := false;
|
675 |
finally
|
676 |
FCloseAction := caNormal;
|
677 |
end;
|
678 |
end;
|
679 |
end;
|
680 |
|
681 |
procedure TIBDataBase.DBParamsChange(Sender: TObject);
|
682 |
begin
|
683 |
FDBParamsChanged := True;
|
684 |
end;
|
685 |
|
686 |
procedure TIBDataBase.DBParamsChanging(Sender: TObject);
|
687 |
begin
|
688 |
EnsureInactive;
|
689 |
CheckInactive;
|
690 |
end;
|
691 |
|
692 |
function TIBDataBase.FindTransaction(TR: TIBTransaction): Integer;
|
693 |
var
|
694 |
i: Integer;
|
695 |
begin
|
696 |
result := -1;
|
697 |
for i := 0 to FTransactions.Count - 1 do
|
698 |
if TR = Transactions[i] then
|
699 |
begin
|
700 |
result := i;
|
701 |
break;
|
702 |
end;
|
703 |
end;
|
704 |
|
705 |
function TIBDataBase.FindDefaultTransaction(): TIBTransaction;
|
706 |
var
|
707 |
i: Integer;
|
708 |
begin
|
709 |
result := FDefaultTransaction;
|
710 |
if result = nil then
|
711 |
begin
|
712 |
for i := 0 to FTransactions.Count - 1 do
|
713 |
if (Transactions[i] <> nil) and
|
714 |
(TIBTransaction(Transactions[i]).DefaultDatabase = self) and
|
715 |
(TIBTransaction(Transactions[i]) <> FInternalTransaction) then
|
716 |
begin
|
717 |
result := TIBTransaction(Transactions[i]);
|
718 |
break;
|
719 |
end;
|
720 |
end;
|
721 |
end;
|
722 |
|
723 |
procedure TIBDataBase.ReConnect;
|
724 |
var OldLoginPrompt: boolean;
|
725 |
OldPassword: string;
|
726 |
begin
|
727 |
CheckActive;
|
728 |
if FHiddenPassword <> '' then
|
729 |
begin
|
730 |
OldLoginPrompt := LoginPrompt;
|
731 |
OldPassword := FHiddenPassword;
|
732 |
LoginPrompt := false;
|
733 |
FUseHiddenPassword := true;
|
734 |
try
|
735 |
Connected := false;
|
736 |
FHiddenPassword := OldPassword;
|
737 |
Connected := true;
|
738 |
finally
|
739 |
LoginPrompt := OldLoginPrompt;
|
740 |
FUseHiddenPassword := false;
|
741 |
end;
|
742 |
end
|
743 |
else
|
744 |
begin
|
745 |
Connected := false;
|
746 |
Connected := true;
|
747 |
end;
|
748 |
end;
|
749 |
|
750 |
procedure TIBDataBase.ForceClose;
|
751 |
begin
|
752 |
if Connected then
|
753 |
begin
|
754 |
FCloseAction := caForce;
|
755 |
try
|
756 |
Connected := false;
|
757 |
finally
|
758 |
FCloseAction := caNormal;
|
759 |
end;
|
760 |
end;
|
761 |
end;
|
762 |
|
763 |
function TIBDataBase.GetConnected: Boolean;
|
764 |
begin
|
765 |
result := (FAttachment <> nil) and FAttachment.IsConnected;
|
766 |
end;
|
767 |
|
768 |
function TIBDataBase.GetSQLObject(Index: Integer): TIBBase;
|
769 |
begin
|
770 |
result := FSQLObjects[Index];
|
771 |
end;
|
772 |
|
773 |
function TIBDataBase.GetSQLObjectCount: Integer;
|
774 |
var
|
775 |
i: Integer;
|
776 |
begin
|
777 |
result := 0;
|
778 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
779 |
Inc(result);
|
780 |
end;
|
781 |
|
782 |
function TIBDataBase.GetIdleTimer: Integer;
|
783 |
begin
|
784 |
result := FTimer.Interval;
|
785 |
end;
|
786 |
|
787 |
function TIBDataBase.GetTransaction(Index: Integer): TIBTransaction;
|
788 |
begin
|
789 |
result := FTransactions[Index];
|
790 |
end;
|
791 |
|
792 |
function TIBDataBase.GetTransactionCount: Integer;
|
793 |
var
|
794 |
i: Integer;
|
795 |
begin
|
796 |
result := 0;
|
797 |
for i := 0 to FTransactions.Count - 1 do
|
798 |
if FTransactions[i] <> nil then
|
799 |
Inc(result);
|
800 |
end;
|
801 |
|
802 |
function TIBDataBase.IndexOfDBConst(st: String): Integer;
|
803 |
var
|
804 |
i, pos_of_str: Integer;
|
805 |
begin
|
806 |
result := -1;
|
807 |
for i := 0 to Params.Count - 1 do
|
808 |
begin
|
809 |
pos_of_str := Pos(st, AnsiLowerCase(Params[i])); {mbcs ok}
|
810 |
if (pos_of_str = 1) or (pos_of_str = Length(DPBPrefix) + 1) then
|
811 |
begin
|
812 |
result := i;
|
813 |
break;
|
814 |
end;
|
815 |
end;
|
816 |
end;
|
817 |
|
818 |
procedure TIBDataBase.InternalClose;
|
819 |
begin
|
820 |
CheckActive;
|
821 |
InternalBeforeClose;
|
822 |
case FCloseAction of
|
823 |
caNormal:
|
824 |
FAttachment.Disconnect(false);
|
825 |
caForce:
|
826 |
FAttachment.Disconnect(true);
|
827 |
caDropDatabase:
|
828 |
FAttachment.DropDatabase;
|
829 |
end;
|
830 |
FAttachment := nil;
|
831 |
FHiddenPassword := '';
|
832 |
FCloseAction := caNormal;
|
833 |
|
834 |
if not (csDesigning in ComponentState) then
|
835 |
MonitorHook.DBDisconnect(Self);
|
836 |
|
837 |
InternalAfterClose;
|
838 |
end;
|
839 |
|
840 |
procedure TIBDataBase.InternalBeforeClose;
|
841 |
var
|
842 |
i: Integer;
|
843 |
begin
|
844 |
{ Tell all connected transactions that we're disconnecting.
|
845 |
This is so transactions can commit/rollback, accordingly
|
846 |
}
|
847 |
for i := 0 to FTransactions.Count - 1 do
|
848 |
begin
|
849 |
try
|
850 |
if FTransactions[i] <> nil then
|
851 |
Transactions[i].BeforeDatabaseDisconnect(Self);
|
852 |
except
|
853 |
if FCloseAction <> caForce then
|
854 |
raise;
|
855 |
end;
|
856 |
end;
|
857 |
for i := 0 to FSQLObjects.Count - 1 do
|
858 |
begin
|
859 |
try
|
860 |
if FSQLObjects[i] <> nil then
|
861 |
SQLObjects[i].DoBeforeDatabaseDisconnect;
|
862 |
except
|
863 |
if FCloseAction <> caForce then
|
864 |
raise;
|
865 |
end;
|
866 |
end;
|
867 |
|
868 |
end;
|
869 |
|
870 |
procedure TIBDataBase.InternalAfterClose;
|
871 |
var
|
872 |
i: Integer;
|
873 |
begin
|
874 |
for i := 0 to FSQLObjects.Count - 1 do
|
875 |
if FSQLObjects[i] <> nil then
|
876 |
SQLObjects[i].DoAfterDatabaseDisconnect;
|
877 |
end;
|
878 |
|
879 |
procedure TIBDataBase.InternalBeforeConnect(aDBParams: TStrings; var aDBName: string;
|
880 |
var aCreateIfNotExists: boolean);
|
881 |
var i: integer;
|
882 |
begin
|
883 |
{Opportunity to override defaults}
|
884 |
for i := 0 to FSQLObjects.Count - 1 do
|
885 |
begin
|
886 |
if FSQLObjects[i] <> nil then
|
887 |
SQLObjects[i].DoBeforeDatabaseConnect(aDBParams,aDBName, aCreateIfNotExists);
|
888 |
end;
|
889 |
end;
|
890 |
|
891 |
procedure TIBDataBase.InternalAfterConnect;
|
892 |
var i: integer;
|
893 |
begin
|
894 |
for i := 0 to FSQLObjects.Count - 1 do
|
895 |
begin
|
896 |
if FSQLObjects[i] <> nil then
|
897 |
SQLObjects[i].DoAfterDatabaseConnect;
|
898 |
end;
|
899 |
end;
|
900 |
|
901 |
procedure TIBDataBase.DoOnCreateDatabase;
|
902 |
var i: integer;
|
903 |
begin
|
904 |
for i := 0 to FSQLObjects.Count - 1 do
|
905 |
begin
|
906 |
if FSQLObjects[i] <> nil then
|
907 |
SQLObjects[i].DoOnCreateDatabase;
|
908 |
end;
|
909 |
if assigned(FOnCreateDatabase) and (FAttachment <> nil) then
|
910 |
OnCreateDatabase(self);
|
911 |
end;
|
912 |
|
913 |
procedure TIBDataBase.CheckStreamConnect;
|
914 |
var
|
915 |
i: integer;
|
916 |
begin
|
917 |
try
|
918 |
if not (csDesigning in ComponentState) and StreamedConnected and (not Connected) then
|
919 |
begin
|
920 |
for i := 0 to FTransactions.Count - 1 do
|
921 |
if FTransactions[i] <> nil then
|
922 |
begin
|
923 |
with TIBTransaction(FTransactions[i]) do
|
924 |
if not Active then
|
925 |
if FStreamedActive and not InTransaction then
|
926 |
begin
|
927 |
StartTransaction;
|
928 |
FStreamedActive := False;
|
929 |
end;
|
930 |
end;
|
931 |
if (FDefaultTransaction <> nil) and
|
932 |
(FDefaultTransaction.FStreamedActive) and
|
933 |
(not FDefaultTransaction.InTransaction) then
|
934 |
FDefaultTransaction.StartTransaction;
|
935 |
StreamedConnected := False;
|
936 |
end;
|
937 |
except
|
938 |
if csDesigning in ComponentState then
|
939 |
HandleException(Self)
|
940 |
else
|
941 |
raise;
|
942 |
end;
|
943 |
end;
|
944 |
|
945 |
procedure TIBDataBase.HandleException(Sender: TObject);
|
946 |
var aParent: TComponent;
|
947 |
begin
|
948 |
aParent := Owner;
|
949 |
while aParent <> nil do
|
950 |
begin
|
951 |
if aParent is TCustomApplication then
|
952 |
begin
|
953 |
TCustomApplication(aParent).HandleException(Sender);
|
954 |
Exit;
|
955 |
end;
|
956 |
aParent := aParent.Owner;
|
957 |
end;
|
958 |
SysUtils.ShowException(ExceptObject,ExceptAddr);
|
959 |
end;
|
960 |
|
961 |
procedure TIBDataBase.Notification(AComponent: TComponent;
|
962 |
Operation: TOperation);
|
963 |
var
|
964 |
i: Integer;
|
965 |
begin
|
966 |
inherited Notification( AComponent, Operation);
|
967 |
if (Operation = opRemove) and (AComponent = FDefaultTransaction) then
|
968 |
begin
|
969 |
i := FindTransaction(FDefaultTransaction);
|
970 |
if (i <> -1) then
|
971 |
RemoveTransaction(i);
|
972 |
FDefaultTransaction := nil;
|
973 |
end;
|
974 |
end;
|
975 |
|
976 |
function TIBDataBase.Login(var aDatabaseName: string): Boolean;
|
977 |
var
|
978 |
IndexOfUser, IndexOfPassword: Integer;
|
979 |
Username, Password, OldPassword: String;
|
980 |
LoginParams: TStrings;
|
981 |
|
982 |
procedure HidePassword;
|
983 |
var
|
984 |
IndexAt: Integer;
|
985 |
begin
|
986 |
IndexAt := Params.IndexOfName('password');
|
987 |
if IndexAt <> -1 then
|
988 |
begin
|
989 |
FHiddenPassword := Params.ValueFromIndex[IndexAt];
|
990 |
Params.Delete(IndexAt);
|
991 |
end;
|
992 |
end;
|
993 |
|
994 |
begin
|
995 |
Result := false;
|
996 |
if FLoginCalled then Exit;
|
997 |
FLoginCalled := true;
|
998 |
try
|
999 |
if Assigned(FOnLogin) and not (csDesigning in ComponentState) then
|
1000 |
begin
|
1001 |
result := True;
|
1002 |
LoginParams := TStringList.Create;
|
1003 |
try
|
1004 |
LoginParams.Assign(Params);
|
1005 |
FOnLogin(Self, LoginParams);
|
1006 |
Params.Assign (LoginParams);
|
1007 |
aDatabaseName := aDatabaseName;
|
1008 |
HidePassword;
|
1009 |
finally
|
1010 |
LoginParams.Free;
|
1011 |
end;
|
1012 |
end
|
1013 |
else
|
1014 |
if assigned(IBGUIInterface) then
|
1015 |
begin
|
1016 |
IndexOfUser := IndexOfDBConst(DPBConstantNames[isc_dpb_user_name]);
|
1017 |
if IndexOfUser <> -1 then
|
1018 |
Username := Params.ValueFromIndex[IndexOfUser];
|
1019 |
IndexOfPassword := IndexOfDBConst(DPBConstantNames[isc_dpb_password]);
|
1020 |
if IndexOfPassword <> -1 then
|
1021 |
begin
|
1022 |
Password := Params.ValueFromIndex[IndexOfPassword];
|
1023 |
OldPassword := password;
|
1024 |
end;
|
1025 |
|
1026 |
result := IBGUIInterface.LoginDialogEx(aDatabaseName, Username, Password, False);
|
1027 |
if result then
|
1028 |
begin
|
1029 |
if Username <> '' then
|
1030 |
begin
|
1031 |
if IndexOfUser = -1 then
|
1032 |
Params.Values[DPBConstantNames[isc_dpb_user_name]] := Username
|
1033 |
else
|
1034 |
Params.ValueFromIndex[IndexOfUser] := Username;
|
1035 |
end
|
1036 |
else
|
1037 |
if IndexOfUser <> -1 then
|
1038 |
Params.Delete(IndexOfUser);
|
1039 |
if (Password = OldPassword) then
|
1040 |
FHiddenPassword := ''
|
1041 |
else
|
1042 |
begin
|
1043 |
FHiddenPassword := Password;
|
1044 |
if OldPassword <> '' then
|
1045 |
HidePassword;
|
1046 |
end;
|
1047 |
end;
|
1048 |
end
|
1049 |
else
|
1050 |
if LoginPrompt then
|
1051 |
IBError(ibxeNoLoginDialog,[]);
|
1052 |
finally
|
1053 |
FLoginCalled := false
|
1054 |
end;
|
1055 |
end;
|
1056 |
|
1057 |
procedure TIBDataBase.DoConnect;
|
1058 |
|
1059 |
function ExpandDBName(aDBName: string): string;
|
1060 |
const
|
1061 |
TmpPrefix = '$TEMP$';
|
1062 |
DataPrefix = '$DATADIR$';
|
1063 |
var
|
1064 |
LocalDirName: string;
|
1065 |
begin
|
1066 |
if Pos(TmpPrefix,aDBName) = 1 then
|
1067 |
begin
|
1068 |
system.Delete(aDBName,1,Length(TmpPrefix));
|
1069 |
Result := GetTempDir + aDBName
|
1070 |
end
|
1071 |
else
|
1072 |
if Pos(DataPrefix,aDBName) = 1 then
|
1073 |
begin
|
1074 |
system.Delete(aDBName,1,Length(DataPrefix));
|
1075 |
if Sysutils.VendorName <> '' then
|
1076 |
LocalDirName := Sysutils.VendorName
|
1077 |
else
|
1078 |
LocalDirName := 'IBX';
|
1079 |
{$IFDEF UNIX}
|
1080 |
LocalDirName := GetUserDir + '.' + LocalDirName;
|
1081 |
{$ENDIF}
|
1082 |
{$IFDEF WINDOWS}
|
1083 |
LocalDirName := GetWindowsSpecialDir(CSIDL_LOCAL_APPDATA) + LocalDirName;
|
1084 |
{$ENDIF}
|
1085 |
CreateDir(LocalDirName);
|
1086 |
Result := LocalDirName + DirectorySeparator + aDBName;
|
1087 |
end
|
1088 |
else
|
1089 |
Result := aDBName;
|
1090 |
end;
|
1091 |
|
1092 |
var
|
1093 |
TempDBParams: TStrings;
|
1094 |
aDBName, oldDBName: string;
|
1095 |
Status: IStatus;
|
1096 |
CharSetID: integer;
|
1097 |
CharSetName: AnsiString;
|
1098 |
DPB: IDPB;
|
1099 |
PW: IDPBItem;
|
1100 |
aCreateIfNotExists: boolean;
|
1101 |
begin
|
1102 |
DPB := nil;
|
1103 |
FCloseAction := caNormal;
|
1104 |
CheckInactive;
|
1105 |
CheckDatabaseName;
|
1106 |
if (not LoginPrompt) and (FHiddenPassword <> '') and not FUseHiddenPassword then
|
1107 |
begin
|
1108 |
FHiddenPassword := '';
|
1109 |
FDBParamsChanged := True;
|
1110 |
end;
|
1111 |
{ Use builtin login prompt if requested }
|
1112 |
aDBName := ExpandDBName(FDBName);
|
1113 |
|
1114 |
oldDBName := FDBName;
|
1115 |
if (LoginPrompt or (csDesigning in ComponentState)) and not Login(aDBName) then
|
1116 |
IBError(ibxeOperationCancelled, [nil]);
|
1117 |
if oldDBName <> FDBName then {user login dialog changed DatabaseName}
|
1118 |
aDBName := ExpandDBName(FDBName)
|
1119 |
else
|
1120 |
aDBName := ExpandDBName(aDBName); {in case built-in dialog changed aDBName}
|
1121 |
|
1122 |
aCreateIfNotExists := CreateIfNotExists;
|
1123 |
TempDBParams := TStringList.Create;
|
1124 |
try
|
1125 |
TempDBParams.Assign(FDBParams);
|
1126 |
{$ifdef UNIX}
|
1127 |
{See below for WINDOWS UseDefaultSystemCodePage}
|
1128 |
if UseDefaultSystemCodePage then
|
1129 |
TempDBParams.Values['lc_ctype'] :='UTF8';
|
1130 |
{$endif}
|
1131 |
InternalBeforeConnect(TempDBParams,aDBName,aCreateIfNotExists);
|
1132 |
|
1133 |
repeat
|
1134 |
{ Generate a new DPB if necessary }
|
1135 |
if (DPB = nil) or FDBParamsChanged or (TempDBParams.Text <> FDBParams.Text) then
|
1136 |
begin
|
1137 |
FDBParamsChanged := False;
|
1138 |
if not FUseHiddenPassword and (not LoginPrompt and not (csDesigning in ComponentState)) or (FHiddenPassword = '') then
|
1139 |
DPB := GenerateDPB(FirebirdAPI,TempDBParams)
|
1140 |
else
|
1141 |
begin
|
1142 |
TempDBParams.Values['password'] := FHiddenPassword;
|
1143 |
DPB := GenerateDPB(FirebirdAPI,TempDBParams);
|
1144 |
end;
|
1145 |
end;
|
1146 |
|
1147 |
if FCreateDatabase then
|
1148 |
begin
|
1149 |
FCreateDatabase := false;
|
1150 |
DPB.Add(isc_dpb_set_db_SQL_dialect).AsByte := SQLDialect; {create with this SQL Dialect}
|
1151 |
FAttachment := FirebirdAPI.CreateDatabase(aDBName,DPB, false);
|
1152 |
if FAttachment = nil then
|
1153 |
DPB := nil
|
1154 |
else
|
1155 |
DoOnCreateDatabase;
|
1156 |
end
|
1157 |
else
|
1158 |
FAttachment := FirebirdAPI.OpenDatabase(aDBName,DPB,false);
|
1159 |
|
1160 |
if FAttachment = nil then
|
1161 |
begin
|
1162 |
Status := FirebirdAPI.GetStatus;
|
1163 |
{$IFDEF UNIX}
|
1164 |
if GetProtocol(aDBName) = Local then
|
1165 |
begin
|
1166 |
if ((Status.GetSQLCode = -901) and (Status.GetIBErrorCode = isc_random)) {Access permissions on firebird temp}
|
1167 |
or
|
1168 |
((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_sys_request)) {Security DB Problem}
|
1169 |
or
|
1170 |
((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_psw_attach)) {Security DB Problem}
|
1171 |
or
|
1172 |
((Status.GetSQLCode = -904) and (Status.GetIBErrorCode = isc_lock_dir_access)) {Lock File Problem}
|
1173 |
then
|
1174 |
begin
|
1175 |
aDBName := 'localhost:' + aDBName;
|
1176 |
Continue;
|
1177 |
end
|
1178 |
end;
|
1179 |
{$ENDIF}
|
1180 |
if ((Status.GetSQLCode = -902) and (Status.GetIBErrorCode = isc_io_error)) {Database not found}
|
1181 |
and aCreateIfNotExists and not (csDesigning in ComponentState) then
|
1182 |
FCreateDatabase := true
|
1183 |
else
|
1184 |
raise EIBInterBaseError.Create(Status);
|
1185 |
end;
|
1186 |
|
1187 |
if UseDefaultSystemCodePage and (FAttachment <> nil) then
|
1188 |
{Only now can we check the codepage in use by the Attachment.
|
1189 |
If not that required then re-open with required LCLType.}
|
1190 |
begin
|
1191 |
{$ifdef WINDOWS}
|
1192 |
if Attachment.CodePage2CharSetID(GetACP,CharSetID) then
|
1193 |
{$else}
|
1194 |
if Attachment.CodePage2CharSetID(DefaultSystemCodePage,CharSetID) then
|
1195 |
{$endif}
|
1196 |
begin
|
1197 |
CharSetName := Attachment.GetCharsetName(CharSetID);
|
1198 |
if CharSetName <> AnsiUpperCase(TempDBParams.Values['lc_ctype']) then
|
1199 |
begin
|
1200 |
TempDBParams.Values['lc_ctype'] := CharSetName;
|
1201 |
FDBParamsChanged := True;
|
1202 |
FAttachment := nil;
|
1203 |
end
|
1204 |
end
|
1205 |
end;
|
1206 |
|
1207 |
until FAttachment <> nil;
|
1208 |
|
1209 |
finally
|
1210 |
TempDBParams.Free;
|
1211 |
end;
|
1212 |
PW := Attachment.getDPB.Find(isc_dpb_password);
|
1213 |
if PW <> nil then PW.AsString := 'xxxxxxxx'; {Hide password}
|
1214 |
|
1215 |
if not (csDesigning in ComponentState) then
|
1216 |
FDBName := aDBName; {Synchronise at run time}
|
1217 |
ValidateClientSQLDialect;
|
1218 |
InternalAfterConnect;
|
1219 |
if not (csDesigning in ComponentState) then
|
1220 |
MonitorHook.DBConnect(Self);
|
1221 |
end;
|
1222 |
|
1223 |
procedure TIBDataBase.RemoveSQLObject(Idx: Integer);
|
1224 |
var
|
1225 |
ds: TIBBase;
|
1226 |
begin
|
1227 |
if (Idx >= 0) and (FSQLObjects[Idx] <> nil) then
|
1228 |
begin
|
1229 |
ds := SQLObjects[Idx];
|
1230 |
FSQLObjects[Idx] := nil;
|
1231 |
ds.Database := nil;
|
1232 |
if (ds.owner is TDataSet) then
|
1233 |
FDataSets.Remove(TDataSet(ds.Owner));
|
1234 |
end;
|
1235 |
end;
|
1236 |
|
1237 |
procedure TIBDataBase.RemoveSQLObjects;
|
1238 |
var
|
1239 |
i: Integer;
|
1240 |
begin
|
1241 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1242 |
begin
|
1243 |
RemoveSQLObject(i);
|
1244 |
if (TIBBase(FSQLObjects[i]).owner is TDataSet) then
|
1245 |
FDataSets.Remove(TDataSet(TIBBase(FSQLObjects[i]).owner));
|
1246 |
end;
|
1247 |
end;
|
1248 |
|
1249 |
procedure TIBDataBase.RemoveTransaction(Idx: Integer);
|
1250 |
var
|
1251 |
TR: TIBTransaction;
|
1252 |
begin
|
1253 |
if ((Idx >= 0) and (FTransactions[Idx] <> nil)) then
|
1254 |
begin
|
1255 |
TR := Transactions[Idx];
|
1256 |
FTransactions[Idx] := nil;
|
1257 |
TR.RemoveDatabase(TR.FindDatabase(Self));
|
1258 |
if TR = FDefaultTransaction then
|
1259 |
FDefaultTransaction := nil;
|
1260 |
end;
|
1261 |
end;
|
1262 |
|
1263 |
procedure TIBDataBase.RemoveTransactions;
|
1264 |
var
|
1265 |
i: Integer;
|
1266 |
begin
|
1267 |
for i := 0 to FTransactions.Count - 1 do if FTransactions[i] <> nil then
|
1268 |
RemoveTransaction(i);
|
1269 |
end;
|
1270 |
|
1271 |
procedure TIBDataBase.SetDatabaseName( const Value: TIBFileName);
|
1272 |
begin
|
1273 |
if FDBName <> Value then
|
1274 |
begin
|
1275 |
EnsureInactive;
|
1276 |
CheckInactive;
|
1277 |
FDBName := Value;
|
1278 |
end;
|
1279 |
end;
|
1280 |
|
1281 |
procedure TIBDataBase.SetDBParamByDPB( const Idx: Integer; Value: String);
|
1282 |
var
|
1283 |
ConstIdx: Integer;
|
1284 |
begin
|
1285 |
ConstIdx := IndexOfDBConst(DPBConstantNames[Idx]);
|
1286 |
if (Value = '') then
|
1287 |
begin
|
1288 |
if ConstIdx <> -1 then
|
1289 |
Params.Delete(ConstIdx);
|
1290 |
end
|
1291 |
else
|
1292 |
begin
|
1293 |
if (ConstIdx = -1) then
|
1294 |
Params.Add(DPBConstantNames[Idx] + '=' + Value)
|
1295 |
else
|
1296 |
Params[ConstIdx] := DPBConstantNames[Idx] + '=' + Value;
|
1297 |
end;
|
1298 |
end;
|
1299 |
|
1300 |
procedure TIBDataBase.SetDBParams(Value: TStrings);
|
1301 |
begin
|
1302 |
FDBParams.Assign(Value);
|
1303 |
end;
|
1304 |
|
1305 |
procedure TIBDataBase.SetDefaultTransaction(Value: TIBTransaction);
|
1306 |
var
|
1307 |
i: Integer;
|
1308 |
begin
|
1309 |
if (FDefaultTransaction <> nil) and (FDefaultTransaction <> Value) then
|
1310 |
begin
|
1311 |
i := FindTransaction(FDefaultTransaction);
|
1312 |
if (i <> -1) and (FDefaultTransaction.DefaultDatabase <> self) then
|
1313 |
RemoveTransaction(i);
|
1314 |
end;
|
1315 |
if (Value <> nil) and (FDefaultTransaction <> Value) then
|
1316 |
begin
|
1317 |
Value.AddDatabase(Self);
|
1318 |
AddTransaction(Value);
|
1319 |
end;
|
1320 |
FDefaultTransaction := Value;
|
1321 |
end;
|
1322 |
|
1323 |
procedure TIBDataBase.SetIdleTimer(Value: Integer);
|
1324 |
begin
|
1325 |
if Value < 0 then
|
1326 |
IBError(ibxeTimeoutNegative, [nil])
|
1327 |
else
|
1328 |
if (Value = 0) then
|
1329 |
begin
|
1330 |
FTimer.Enabled := False;
|
1331 |
FTimer.Interval := 0;
|
1332 |
end
|
1333 |
else
|
1334 |
if (Value > 0) then
|
1335 |
begin
|
1336 |
FTimer.Interval := Value;
|
1337 |
if not (csDesigning in ComponentState) then
|
1338 |
FTimer.Enabled := True;
|
1339 |
end;
|
1340 |
end;
|
1341 |
|
1342 |
function TIBDataBase.TestConnected: Boolean;
|
1343 |
var
|
1344 |
DatabaseInfo: TIBDatabaseInfo;
|
1345 |
begin
|
1346 |
result := Connected;
|
1347 |
if result then
|
1348 |
begin
|
1349 |
DatabaseInfo := TIBDatabaseInfo.Create(self);
|
1350 |
try
|
1351 |
DatabaseInfo.Database := self;
|
1352 |
{ poke the server to see if connected }
|
1353 |
if DatabaseInfo.BaseLevel = 0 then ;
|
1354 |
DatabaseInfo.Free;
|
1355 |
except
|
1356 |
ForceClose;
|
1357 |
result := False;
|
1358 |
DatabaseInfo.Free;
|
1359 |
end;
|
1360 |
end;
|
1361 |
end;
|
1362 |
|
1363 |
procedure TIBDataBase.TimeoutConnection(Sender: TObject);
|
1364 |
begin
|
1365 |
if Connected then
|
1366 |
begin
|
1367 |
if not FAttachment.HasActivity then
|
1368 |
begin
|
1369 |
ForceClose;
|
1370 |
if Assigned(FOnIdleTimer) then
|
1371 |
FOnIdleTimer(Self);
|
1372 |
end
|
1373 |
end;
|
1374 |
end;
|
1375 |
|
1376 |
function TIBDataBase.GetIsReadOnly: Boolean;
|
1377 |
var
|
1378 |
DatabaseInfo: TIBDatabaseInfo;
|
1379 |
begin
|
1380 |
DatabaseInfo := TIBDatabaseInfo.Create(self);
|
1381 |
DatabaseInfo.Database := self;
|
1382 |
if (DatabaseInfo.ODSMajorVersion < 10) then
|
1383 |
result := false
|
1384 |
else
|
1385 |
begin
|
1386 |
if (DatabaseInfo.ReadOnly = 0) then
|
1387 |
result := false
|
1388 |
else
|
1389 |
result := true;
|
1390 |
end;
|
1391 |
DatabaseInfo.Free;
|
1392 |
end;
|
1393 |
|
1394 |
|
1395 |
procedure TIBDataBase.SetSQLDialect( const Value: Integer);
|
1396 |
begin
|
1397 |
if (Value < 1) then IBError(ibxeSQLDialectInvalid, [nil]);
|
1398 |
if (Attachment = nil) or (Value <= DBSQLDialect) then
|
1399 |
FSQLDialect := Value
|
1400 |
else
|
1401 |
IBError(ibxeSQLDialectInvalid, [nil]);
|
1402 |
end;
|
1403 |
|
1404 |
procedure TIBDataBase.SetWireCompression(AValue: boolean);
|
1405 |
var Index: integer;
|
1406 |
begin
|
1407 |
if AValue then
|
1408 |
FConfigOverrides.Values['WireCompression'] := 'true'
|
1409 |
else
|
1410 |
begin
|
1411 |
Index := FConfigOverrides.IndexOfName('WireCompression');
|
1412 |
if Index <> -1 then
|
1413 |
FConfigOverrides.Delete(Index);
|
1414 |
end;
|
1415 |
end;
|
1416 |
|
1417 |
function TIBDataBase.GetDBSQLDialect: Integer;
|
1418 |
begin
|
1419 |
CheckActive;
|
1420 |
Result := Attachment.GetSQLDialect;
|
1421 |
end;
|
1422 |
|
1423 |
function TIBDataBase.GetDefaultCharSetID: integer;
|
1424 |
begin
|
1425 |
if (Attachment <> nil) and Attachment.HasDefaultCharSet then
|
1426 |
Result := Attachment.GetDefaultCharSetID
|
1427 |
else
|
1428 |
Result := 0;
|
1429 |
end;
|
1430 |
|
1431 |
function TIBDataBase.GetDefaultCharSetName: AnsiString;
|
1432 |
begin
|
1433 |
if Attachment <> nil then
|
1434 |
Result := Attachment.GetCharsetName(DefaultCharSetID)
|
1435 |
else
|
1436 |
Result := '';
|
1437 |
end;
|
1438 |
|
1439 |
function TIBDataBase.GetDefaultCodePage: TSystemCodePage;
|
1440 |
begin
|
1441 |
if Attachment <> nil then
|
1442 |
Attachment.CharSetID2CodePage(DefaultCharSetID,Result)
|
1443 |
else
|
1444 |
Result := CP_NONE;
|
1445 |
end;
|
1446 |
|
1447 |
function TIBDataBase.GetFirebirdAPI: IFirebirdAPI;
|
1448 |
var fblib: IFirebirdLibrary;
|
1449 |
begin
|
1450 |
if FFirebirdAPI = nil then
|
1451 |
begin
|
1452 |
if (csDesigning in ComponentState) or (Trim(FFirebirdLibraryPathName) = '') then
|
1453 |
FFirebirdAPI := IB.FirebirdAPI
|
1454 |
else
|
1455 |
begin
|
1456 |
fblib := IB.LoadFBLibrary(FFirebirdLibraryPathName);
|
1457 |
if assigned(fblib) then
|
1458 |
FFirebirdAPI := fblib.GetFirebirdAPI;
|
1459 |
end;
|
1460 |
end;
|
1461 |
Result := FFirebirdAPI;
|
1462 |
end;
|
1463 |
|
1464 |
function TIBDataBase.GetRemoteProtocol: string;
|
1465 |
begin
|
1466 |
CheckActive;
|
1467 |
Result := Attachment.GetRemoteProtocol;
|
1468 |
end;
|
1469 |
|
1470 |
function TIBDataBase.GetSQLObjectsCount: Integer;
|
1471 |
begin
|
1472 |
Result := FSQLObjects.Count;
|
1473 |
end;
|
1474 |
|
1475 |
function TIBDataBase.GetWireCompression: boolean;
|
1476 |
begin
|
1477 |
Result := CompareText(FConfigOverrides.Values['WireCompression'],'true') = 0;
|
1478 |
end;
|
1479 |
|
1480 |
procedure TIBDataBase.SetAttachment(AValue: IAttachment);
|
1481 |
begin
|
1482 |
if FAttachment = AValue then Exit;
|
1483 |
if FAttachment <> nil then
|
1484 |
begin
|
1485 |
if Assigned(BeforeDisconnect) then
|
1486 |
BeforeDisconnect(self);
|
1487 |
InternalBeforeClose;
|
1488 |
FAttachment := nil;
|
1489 |
FFirebirdAPI := nil;
|
1490 |
InternalAfterClose;
|
1491 |
if Assigned(AfterDisconnect) then
|
1492 |
AfterDisconnect(self);
|
1493 |
end;
|
1494 |
if Assigned(BeforeConnect) then
|
1495 |
BeforeConnect(self);
|
1496 |
FAttachment := AValue;
|
1497 |
if FAttachment <> nil then
|
1498 |
begin
|
1499 |
ValidateClientSQLDialect;
|
1500 |
FDBName := FAttachment.GetConnectString;
|
1501 |
if FFirebirdLibraryPathName <> '' then
|
1502 |
FFirebirdLibraryPathName := FAttachment.getFirebirdAPI.GetFBLibrary.GetLibraryFilePath;
|
1503 |
InternalAfterConnect;
|
1504 |
if Assigned(AfterConnect) then
|
1505 |
AfterConnect(self);
|
1506 |
end;
|
1507 |
end;
|
1508 |
|
1509 |
procedure TIBDataBase.SetConfigOverrides(AValue: TStrings);
|
1510 |
begin
|
1511 |
if FConfigOverrides = AValue then Exit;
|
1512 |
FConfigOverrides.Assign(AValue);
|
1513 |
end;
|
1514 |
|
1515 |
procedure TIBDataBase.SetFirebirdLibraryPathName(AValue: TIBFileName);
|
1516 |
begin
|
1517 |
if FFirebirdLibraryPathName = AValue then Exit;
|
1518 |
FFirebirdLibraryPathName := AValue;
|
1519 |
ForceClose;
|
1520 |
FFirebirdAPI := nil;
|
1521 |
end;
|
1522 |
|
1523 |
procedure TIBDataBase.ValidateClientSQLDialect;
|
1524 |
begin
|
1525 |
if (DBSQLDialect < FSQLDialect) then
|
1526 |
begin
|
1527 |
FSQLDialect := DBSQLDialect;
|
1528 |
if Assigned (FOnDialectDowngradeWarning) then
|
1529 |
FOnDialectDowngradeWarning(self);
|
1530 |
end;
|
1531 |
end;
|
1532 |
|
1533 |
procedure TIBDataBase.ApplyUpdates( const DataSets: array of TDataSet);
|
1534 |
var
|
1535 |
I: Integer;
|
1536 |
DS: TIBCustomDataSet;
|
1537 |
TR: TIBTransaction;
|
1538 |
begin
|
1539 |
TR := nil;
|
1540 |
for I := 0 to High(DataSets) do
|
1541 |
begin
|
1542 |
DS := TIBCustomDataSet(DataSets[I]);
|
1543 |
if DS.Database <> Self then
|
1544 |
IBError(ibxeUpdateWrongDB, [nil]);
|
1545 |
if TR = nil then
|
1546 |
TR := DS.Transaction;
|
1547 |
if (DS.Transaction <> TR) or (TR = nil) then
|
1548 |
IBError(ibxeUpdateWrongTR, [nil]);
|
1549 |
end;
|
1550 |
TR.CheckInTransaction;
|
1551 |
for I := 0 to High(DataSets) do
|
1552 |
begin
|
1553 |
DS := TIBCustomDataSet(DataSets[I]);
|
1554 |
DS.ApplyUpdates;
|
1555 |
end;
|
1556 |
TR.CommitRetaining;
|
1557 |
end;
|
1558 |
|
1559 |
procedure TIBDataBase.CloseDataSets;
|
1560 |
var
|
1561 |
i: Integer;
|
1562 |
begin
|
1563 |
for i := 0 to DataSetCount - 1 do
|
1564 |
if (DataSets[i] <> nil) then
|
1565 |
DataSets[i].close;
|
1566 |
end;
|
1567 |
|
1568 |
function TIBDataBase.GetDataset(Index: longint): TDataset;
|
1569 |
begin
|
1570 |
if (Index >= 0) and (Index < FDataSets.Count) then
|
1571 |
Result := TDataSet(FDataSets[Index])
|
1572 |
else
|
1573 |
raise Exception.Create('Invalid Index to DataSets');
|
1574 |
end;
|
1575 |
|
1576 |
function TIBDataBase.GetDataSetCount: Longint;
|
1577 |
begin
|
1578 |
Result := FDataSets.Count;
|
1579 |
end;
|
1580 |
|
1581 |
procedure TIBDataBase.ReadState(Reader: TReader);
|
1582 |
begin
|
1583 |
FDBParams.Clear;
|
1584 |
inherited ReadState(Reader);
|
1585 |
end;
|
1586 |
|
1587 |
procedure TIBDataBase.SetConnected(Value: boolean);
|
1588 |
begin
|
1589 |
if StreamedConnected and not AllowStreamedConnected then
|
1590 |
begin
|
1591 |
StreamedConnected := false;
|
1592 |
Value := false
|
1593 |
end;
|
1594 |
inherited SetConnected(Value);
|
1595 |
end;
|
1596 |
|
1597 |
procedure TIBDataBase.GetFieldNames( const TableName: string; List: TStrings);
|
1598 |
var
|
1599 |
Query: TIBSQL;
|
1600 |
begin
|
1601 |
if TableName = '' then
|
1602 |
IBError(ibxeNoTableName, [nil]);
|
1603 |
if not Connected then
|
1604 |
Open;
|
1605 |
if not FInternalTransaction.Active then
|
1606 |
FInternalTransaction.StartTransaction;
|
1607 |
Query := TIBSQL.Create(self);
|
1608 |
try
|
1609 |
Query.GoToFirstRecordOnExecute := False;
|
1610 |
Query.Database := Self;
|
1611 |
Query.Transaction := FInternalTransaction;
|
1612 |
Query.SQL.Text := 'Select R.RDB$FIELD_NAME ' + {do not localize}
|
1613 |
'from RDB$RELATION_FIELDS R ' + {do not localize}
|
1614 |
'where R.RDB$RELATION_NAME = ' + {do not localize}
|
1615 |
'''' + ExtractIdentifier(DBSQLDialect, TableName) +
|
1616 |
''' and Exists(Select * From RDB$FIELDS F Where R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME)' ; {do not localize}
|
1617 |
Query.Prepare;
|
1618 |
Query.ExecQuery;
|
1619 |
with List do
|
1620 |
begin
|
1621 |
BeginUpdate;
|
1622 |
try
|
1623 |
Clear;
|
1624 |
while (not Query.EOF) and Query.Next do
|
1625 |
List.Add(TrimRight(Query.FieldByName('RDB$FIELD_NAME').AsString)); {do not localize}
|
1626 |
finally
|
1627 |
EndUpdate;
|
1628 |
end;
|
1629 |
end;
|
1630 |
finally
|
1631 |
Query.free;
|
1632 |
FInternalTransaction.Commit;
|
1633 |
end;
|
1634 |
end;
|
1635 |
|
1636 |
procedure TIBDataBase.GetTableNames(List: TStrings; SystemTables: Boolean);
|
1637 |
var
|
1638 |
Query : TIBSQL;
|
1639 |
begin
|
1640 |
if not (csReading in ComponentState) then
|
1641 |
begin
|
1642 |
if not Connected then
|
1643 |
Open;
|
1644 |
if not FInternalTransaction.Active then
|
1645 |
FInternalTransaction.StartTransaction;
|
1646 |
Query := TIBSQL.Create(self);
|
1647 |
try
|
1648 |
Query.GoToFirstRecordOnExecute := False;
|
1649 |
Query.Database := Self;
|
1650 |
Query.Transaction := FInternalTransaction;
|
1651 |
if SystemTables then
|
1652 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1653 |
' where RDB$VIEW_BLR is NULL' {do not localize}
|
1654 |
else
|
1655 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1656 |
' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
|
1657 |
Query.Prepare;
|
1658 |
Query.ExecQuery;
|
1659 |
with List do
|
1660 |
begin
|
1661 |
BeginUpdate;
|
1662 |
try
|
1663 |
Clear;
|
1664 |
while (not Query.EOF) and Query.Next do
|
1665 |
List.Add(TrimRight(Query.Fields[0].AsString));
|
1666 |
finally
|
1667 |
EndUpdate;
|
1668 |
end;
|
1669 |
end;
|
1670 |
finally
|
1671 |
Query.Free;
|
1672 |
FInternalTransaction.Commit;
|
1673 |
end;
|
1674 |
end;
|
1675 |
end;
|
1676 |
|
1677 |
{ TIBTransaction }
|
1678 |
|
1679 |
constructor TIBTransaction.Create(AOwner: TComponent);
|
1680 |
begin
|
1681 |
inherited Create(AOwner);
|
1682 |
FDatabases := TList.Create;
|
1683 |
FSQLObjects := TList.Create;
|
1684 |
FTPB := nil;
|
1685 |
FTRParams := TStringList.Create;
|
1686 |
FTRParamsChanged := True;
|
1687 |
TStringList(FTRParams).OnChange := TRParamsChange;
|
1688 |
TStringList(FTRParams).OnChanging := TRParamsChanging;
|
1689 |
FTimer := TFPTimer.Create(Self);
|
1690 |
FTimer.Enabled := False;
|
1691 |
FTimer.Interval := 0;
|
1692 |
FTimer.OnTimer := TimeoutTransaction;
|
1693 |
FDefaultAction := taCommit;
|
1694 |
end;
|
1695 |
|
1696 |
destructor TIBTransaction.Destroy;
|
1697 |
var
|
1698 |
i: Integer;
|
1699 |
begin
|
1700 |
if InTransaction then
|
1701 |
EndTransaction(FDefaultAction, True);
|
1702 |
for i := 0 to FSQLObjects.Count - 1 do
|
1703 |
if FSQLObjects[i] <> nil then
|
1704 |
SQLObjects[i].DoTransactionFree;
|
1705 |
RemoveSQLObjects;
|
1706 |
RemoveDatabases;
|
1707 |
FTPB := nil;
|
1708 |
FTRParams.Free;
|
1709 |
FSQLObjects.Free;
|
1710 |
FDatabases.Free;
|
1711 |
inherited Destroy;
|
1712 |
end;
|
1713 |
|
1714 |
procedure TIBTransaction.CheckDatabasesInList;
|
1715 |
begin
|
1716 |
if GetDatabaseCount = 0 then
|
1717 |
IBError(ibxeNoDatabasesInTransaction, [nil]);
|
1718 |
end;
|
1719 |
|
1720 |
procedure TIBTransaction.CheckInTransaction;
|
1721 |
begin
|
1722 |
if FStreamedActive and (not InTransaction) then
|
1723 |
Loaded;
|
1724 |
if (TransactionIntf = nil) then
|
1725 |
IBError(ibxeNotInTransaction, [nil]);
|
1726 |
end;
|
1727 |
|
1728 |
procedure TIBTransaction.DoBeforeTransactionEnd;
|
1729 |
begin
|
1730 |
if Assigned(FBeforeTransactionEnd) then
|
1731 |
FBeforeTransactionEnd(self);
|
1732 |
end;
|
1733 |
|
1734 |
procedure TIBTransaction.DoAfterTransactionEnd;
|
1735 |
begin
|
1736 |
if Assigned(FAfterTransactionEnd) then
|
1737 |
FAfterTransactionEnd(self);
|
1738 |
end;
|
1739 |
|
1740 |
procedure TIBTransaction.DoOnStartTransaction;
|
1741 |
begin
|
1742 |
if assigned(FOnStartTransaction) then
|
1743 |
OnStartTransaction(self);
|
1744 |
end;
|
1745 |
|
1746 |
procedure TIBTransaction.DoAfterExecQuery(Sender: TObject);
|
1747 |
begin
|
1748 |
if assigned(FAfterExecQuery) then
|
1749 |
AfterExecQuery(Sender);
|
1750 |
end;
|
1751 |
|
1752 |
procedure TIBTransaction.DoAfterEdit(Sender: TObject);
|
1753 |
begin
|
1754 |
if assigned(FAfterEdit) then
|
1755 |
AfterEdit(Sender);
|
1756 |
end;
|
1757 |
|
1758 |
procedure TIBTransaction.DoAfterDelete(Sender: TObject);
|
1759 |
begin
|
1760 |
if assigned(FAfterDelete) then
|
1761 |
AfterDelete(Sender);
|
1762 |
end;
|
1763 |
|
1764 |
procedure TIBTransaction.DoAfterInsert(Sender: TObject);
|
1765 |
begin
|
1766 |
if assigned(FAfterInsert) then
|
1767 |
AfterInsert(Sender);
|
1768 |
end;
|
1769 |
|
1770 |
procedure TIBTransaction.DoAfterPost(Sender: TObject);
|
1771 |
begin
|
1772 |
if assigned(FAfterPost) then
|
1773 |
AfterPost(Sender);
|
1774 |
end;
|
1775 |
|
1776 |
procedure TIBTransaction.EnsureNotInTransaction;
|
1777 |
begin
|
1778 |
if csDesigning in ComponentState then
|
1779 |
begin
|
1780 |
if TransactionIntf <> nil then
|
1781 |
Rollback;
|
1782 |
end;
|
1783 |
end;
|
1784 |
|
1785 |
procedure TIBTransaction.CheckNotInTransaction;
|
1786 |
begin
|
1787 |
if (TransactionIntf <> nil) and TransactionIntf.InTransaction then
|
1788 |
IBError(ibxeInTransaction, [nil]);
|
1789 |
end;
|
1790 |
|
1791 |
function TIBTransaction.AddDatabase(db: TIBDatabase): Integer;
|
1792 |
var
|
1793 |
i: Integer;
|
1794 |
NilFound: Boolean;
|
1795 |
begin
|
1796 |
EnsureNotInTransaction;
|
1797 |
CheckNotInTransaction;
|
1798 |
FTransactionIntf := nil;
|
1799 |
|
1800 |
i := FindDatabase(db);
|
1801 |
if i <> -1 then
|
1802 |
begin
|
1803 |
result := i;
|
1804 |
exit;
|
1805 |
end;
|
1806 |
NilFound := False;
|
1807 |
i := 0;
|
1808 |
while (not NilFound) and (i < FDatabases.Count) do
|
1809 |
begin
|
1810 |
NilFound := (FDatabases[i] = nil);
|
1811 |
if (not NilFound) then
|
1812 |
Inc(i);
|
1813 |
end;
|
1814 |
if (NilFound) then
|
1815 |
begin
|
1816 |
FDatabases[i] := db;
|
1817 |
result := i;
|
1818 |
end
|
1819 |
else
|
1820 |
begin
|
1821 |
result := FDatabases.Count;
|
1822 |
FDatabases.Add(db);
|
1823 |
end;
|
1824 |
end;
|
1825 |
|
1826 |
function TIBTransaction.AddSQLObject(ds: TIBBase): Integer;
|
1827 |
begin
|
1828 |
result := 0;
|
1829 |
while (result < FSQLObjects.Count) and (FSQLObjects[result] <> nil) do
|
1830 |
Inc(result);
|
1831 |
if (result = FSQLObjects.Count) then
|
1832 |
FSQLObjects.Add(ds)
|
1833 |
else
|
1834 |
FSQLObjects[result] := ds;
|
1835 |
end;
|
1836 |
|
1837 |
procedure TIBTransaction.Commit;
|
1838 |
begin
|
1839 |
EndTransaction(TACommit, False);
|
1840 |
end;
|
1841 |
|
1842 |
procedure TIBTransaction.CommitRetaining;
|
1843 |
begin
|
1844 |
EndTransaction(TACommitRetaining, False);
|
1845 |
end;
|
1846 |
|
1847 |
procedure TIBTransaction.EndTransaction(Action: TTransactionAction;
|
1848 |
Force: Boolean);
|
1849 |
var
|
1850 |
i: Integer;
|
1851 |
begin
|
1852 |
CheckInTransaction;
|
1853 |
if FInEndTransaction then Exit;
|
1854 |
FInEndTransaction := true;
|
1855 |
FEndAction := Action;
|
1856 |
try
|
1857 |
case Action of
|
1858 |
TARollback, TACommit:
|
1859 |
begin
|
1860 |
try
|
1861 |
DoBeforeTransactionEnd;
|
1862 |
except on E: EIBInterBaseError do
|
1863 |
begin
|
1864 |
if not Force then
|
1865 |
raise;
|
1866 |
end;
|
1867 |
end;
|
1868 |
|
1869 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1870 |
try
|
1871 |
SQLObjects[i].DoBeforeTransactionEnd(Action);
|
1872 |
except on E: EIBInterBaseError do
|
1873 |
begin
|
1874 |
if not Force then
|
1875 |
raise;
|
1876 |
end;
|
1877 |
end;
|
1878 |
|
1879 |
if InTransaction then
|
1880 |
begin
|
1881 |
if (Action = TARollback) then
|
1882 |
FTransactionIntf.Rollback(Force)
|
1883 |
else
|
1884 |
try
|
1885 |
FTransactionIntf.Commit;
|
1886 |
except on E: EIBInterBaseError do
|
1887 |
begin
|
1888 |
if Force then
|
1889 |
FTransactionIntf.Rollback(Force)
|
1890 |
else
|
1891 |
raise;
|
1892 |
end;
|
1893 |
end;
|
1894 |
|
1895 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
1896 |
try
|
1897 |
SQLObjects[i].DoAfterTransactionEnd;
|
1898 |
except on E: EIBInterBaseError do
|
1899 |
begin
|
1900 |
if not Force then
|
1901 |
raise;
|
1902 |
end;
|
1903 |
end;
|
1904 |
try
|
1905 |
DoAfterTransactionEnd;
|
1906 |
except on E: EIBInterBaseError do
|
1907 |
begin
|
1908 |
if not Force then
|
1909 |
raise;
|
1910 |
end;
|
1911 |
end;
|
1912 |
end;
|
1913 |
end;
|
1914 |
TACommitRetaining:
|
1915 |
FTransactionIntf.CommitRetaining;
|
1916 |
|
1917 |
TARollbackRetaining:
|
1918 |
FTransactionIntf.RollbackRetaining;
|
1919 |
end;
|
1920 |
if not (csDesigning in ComponentState) then
|
1921 |
begin
|
1922 |
case Action of
|
1923 |
TACommit:
|
1924 |
MonitorHook.TRCommit(Self);
|
1925 |
TARollback:
|
1926 |
MonitorHook.TRRollback(Self);
|
1927 |
TACommitRetaining:
|
1928 |
MonitorHook.TRCommitRetaining(Self);
|
1929 |
TARollbackRetaining:
|
1930 |
MonitorHook.TRRollbackRetaining(Self);
|
1931 |
end;
|
1932 |
end;
|
1933 |
finally
|
1934 |
FInEndTransaction := false
|
1935 |
end;
|
1936 |
end;
|
1937 |
|
1938 |
function TIBTransaction.GetDatabase(Index: Integer): TIBDatabase;
|
1939 |
begin
|
1940 |
result := FDatabases[Index];
|
1941 |
end;
|
1942 |
|
1943 |
function TIBTransaction.GetDatabaseCount: Integer;
|
1944 |
var
|
1945 |
i, Cnt: Integer;
|
1946 |
begin
|
1947 |
result := 0;
|
1948 |
Cnt := FDatabases.Count - 1;
|
1949 |
for i := 0 to Cnt do if FDatabases[i] <> nil then
|
1950 |
Inc(result);
|
1951 |
end;
|
1952 |
|
1953 |
function TIBTransaction.GetSQLObject(Index: Integer): TIBBase;
|
1954 |
begin
|
1955 |
result := FSQLObjects[Index];
|
1956 |
end;
|
1957 |
|
1958 |
function TIBTransaction.GetSQLObjectCount: Integer;
|
1959 |
var
|
1960 |
i, Cnt: Integer;
|
1961 |
begin
|
1962 |
result := 0;
|
1963 |
Cnt := FSQLObjects.Count - 1;
|
1964 |
for i := 0 to Cnt do if FSQLObjects[i] <> nil then
|
1965 |
Inc(result);
|
1966 |
end;
|
1967 |
|
1968 |
function TIBTransaction.GetInTransaction: Boolean;
|
1969 |
begin
|
1970 |
result := (TransactionIntf <> nil) and TransactionIntf.InTransaction;
|
1971 |
end;
|
1972 |
|
1973 |
function TIBTransaction.FindDatabase(db: TIBDatabase): Integer;
|
1974 |
var
|
1975 |
i: Integer;
|
1976 |
begin
|
1977 |
result := -1;
|
1978 |
for i := 0 to FDatabases.Count - 1 do
|
1979 |
if db = TIBDatabase(FDatabases[i]) then
|
1980 |
begin
|
1981 |
result := i;
|
1982 |
break;
|
1983 |
end;
|
1984 |
end;
|
1985 |
|
1986 |
function TIBTransaction.FindDefaultDatabase: TIBDatabase;
|
1987 |
var
|
1988 |
i: Integer;
|
1989 |
begin
|
1990 |
result := FDefaultDatabase;
|
1991 |
if result = nil then
|
1992 |
begin
|
1993 |
for i := 0 to FDatabases.Count - 1 do
|
1994 |
if (TIBDatabase(FDatabases[i]) <> nil) and
|
1995 |
(TIBDatabase(FDatabases[i]).DefaultTransaction = self) then
|
1996 |
begin
|
1997 |
result := TIBDatabase(FDatabases[i]);
|
1998 |
break;
|
1999 |
end;
|
2000 |
end;
|
2001 |
end;
|
2002 |
|
2003 |
function TIBTransaction.GetEndAction: TTransactionAction;
|
2004 |
begin
|
2005 |
if FInEndTransaction then
|
2006 |
Result := FEndAction
|
2007 |
else
|
2008 |
IBError(ibxeIB60feature, [nil])
|
2009 |
end;
|
2010 |
|
2011 |
|
2012 |
function TIBTransaction.GetIdleTimer: Integer;
|
2013 |
begin
|
2014 |
result := FTimer.Interval;
|
2015 |
end;
|
2016 |
|
2017 |
procedure TIBTransaction.Loaded;
|
2018 |
begin
|
2019 |
inherited Loaded;
|
2020 |
end;
|
2021 |
|
2022 |
procedure TIBTransaction.BeforeDatabaseDisconnect(DB: TIBDatabase);
|
2023 |
begin
|
2024 |
if InTransaction then
|
2025 |
EndTransaction(FDefaultAction, True);
|
2026 |
FTransactionIntf := nil;
|
2027 |
end;
|
2028 |
|
2029 |
procedure TIBTransaction.RemoveDatabase(Idx: Integer);
|
2030 |
var
|
2031 |
DB: TIBDatabase;
|
2032 |
begin
|
2033 |
if ((Idx >= 0) and (FDatabases[Idx] <> nil)) then
|
2034 |
begin
|
2035 |
EnsureNotInTransaction;
|
2036 |
CheckNotInTransaction;
|
2037 |
FTransactionIntf := nil;
|
2038 |
|
2039 |
DB := Databases[Idx];
|
2040 |
FDatabases[Idx] := nil;
|
2041 |
DB.RemoveTransaction(DB.FindTransaction(Self));
|
2042 |
if DB = FDefaultDatabase then
|
2043 |
FDefaultDatabase := nil;
|
2044 |
end;
|
2045 |
end;
|
2046 |
|
2047 |
procedure TIBTransaction.RemoveDatabases;
|
2048 |
var
|
2049 |
i: Integer;
|
2050 |
begin
|
2051 |
EnsureNotInTransaction;
|
2052 |
CheckNotInTransaction;
|
2053 |
FTransactionIntf := nil;
|
2054 |
|
2055 |
for i := 0 to FDatabases.Count - 1 do if FDatabases[i] <> nil then
|
2056 |
RemoveDatabase(i);
|
2057 |
end;
|
2058 |
|
2059 |
procedure TIBTransaction.RemoveSQLObject(Idx: Integer);
|
2060 |
var
|
2061 |
ds: TIBBase;
|
2062 |
begin
|
2063 |
if ((Idx >= 0) and (FSQLObjects[Idx] <> nil)) then
|
2064 |
begin
|
2065 |
ds := SQLObjects[Idx];
|
2066 |
FSQLObjects[Idx] := nil;
|
2067 |
ds.Transaction := nil;
|
2068 |
end;
|
2069 |
end;
|
2070 |
|
2071 |
procedure TIBTransaction.RemoveSQLObjects;
|
2072 |
var
|
2073 |
i: Integer;
|
2074 |
begin
|
2075 |
for i := 0 to FSQLObjects.Count - 1 do if FSQLObjects[i] <> nil then
|
2076 |
RemoveSQLObject(i);
|
2077 |
end;
|
2078 |
|
2079 |
procedure TIBTransaction.Rollback;
|
2080 |
begin
|
2081 |
EndTransaction(TARollback, False);
|
2082 |
end;
|
2083 |
|
2084 |
procedure TIBTransaction.RollbackRetaining;
|
2085 |
begin
|
2086 |
EndTransaction(TARollbackRetaining, False);
|
2087 |
end;
|
2088 |
|
2089 |
procedure TIBTransaction.SetActive(Value: Boolean);
|
2090 |
begin
|
2091 |
if csReading in ComponentState then
|
2092 |
FStreamedActive := Value
|
2093 |
else
|
2094 |
if Value and not InTransaction then
|
2095 |
StartTransaction
|
2096 |
else
|
2097 |
if not Value and InTransaction then
|
2098 |
Rollback;
|
2099 |
end;
|
2100 |
|
2101 |
procedure TIBTransaction.SetDefaultDatabase(Value: TIBDatabase);
|
2102 |
var
|
2103 |
i: integer;
|
2104 |
begin
|
2105 |
if (FDefaultDatabase <> nil) and (FDefaultDatabase <> Value) then
|
2106 |
begin
|
2107 |
i := FDefaultDatabase.FindTransaction(self);
|
2108 |
if (i <> -1) then
|
2109 |
FDefaultDatabase.RemoveTransaction(i);
|
2110 |
end;
|
2111 |
if (Value <> nil) and (FDefaultDatabase <> Value) then
|
2112 |
begin
|
2113 |
Value.AddTransaction(Self);
|
2114 |
AddDatabase(Value);
|
2115 |
for i := 0 to FSQLObjects.Count - 1 do
|
2116 |
if (FSQLObjects[i] <> nil) and
|
2117 |
(TIBBase(FSQLObjects[i]).Database = nil) then
|
2118 |
SetObjectProp(TIBBase(FSQLObjects[i]).Owner, 'Database', Value);
|
2119 |
end;
|
2120 |
FDefaultDatabase := Value;
|
2121 |
end;
|
2122 |
|
2123 |
procedure TIBTransaction.Notification( AComponent: TComponent;
|
2124 |
Operation: TOperation);
|
2125 |
var
|
2126 |
i: Integer;
|
2127 |
begin
|
2128 |
inherited Notification( AComponent, Operation);
|
2129 |
if (Operation = opRemove) and (AComponent = FDefaultDatabase) then
|
2130 |
begin
|
2131 |
i := FindDatabase(FDefaultDatabase);
|
2132 |
if (i <> -1) then
|
2133 |
RemoveDatabase(i);
|
2134 |
FDefaultDatabase := nil;
|
2135 |
end;
|
2136 |
end;
|
2137 |
|
2138 |
procedure TIBTransaction.SetIdleTimer(Value: Integer);
|
2139 |
begin
|
2140 |
if Value < 0 then
|
2141 |
IBError(ibxeTimeoutNegative, [nil])
|
2142 |
else
|
2143 |
if (Value = 0) then
|
2144 |
begin
|
2145 |
FTimer.Enabled := False;
|
2146 |
FTimer.Interval := 0;
|
2147 |
end
|
2148 |
else
|
2149 |
if (Value > 0) then
|
2150 |
begin
|
2151 |
FTimer.Interval := Value;
|
2152 |
if not (csDesigning in ComponentState) then
|
2153 |
FTimer.Enabled := True;
|
2154 |
end;
|
2155 |
end;
|
2156 |
|
2157 |
procedure TIBTransaction.SetTRParams(Value: TStrings);
|
2158 |
begin
|
2159 |
FTRParams.Assign(Value);
|
2160 |
end;
|
2161 |
|
2162 |
procedure TIBTransaction.StartTransaction;
|
2163 |
var
|
2164 |
i: Integer;
|
2165 |
Attachments: array of IAttachment;
|
2166 |
ValidDatabaseCount: integer;
|
2167 |
begin
|
2168 |
CheckNotInTransaction;
|
2169 |
CheckDatabasesInList;
|
2170 |
if TransactionIntf <> nil then
|
2171 |
TransactionIntf.Start(DefaultAction)
|
2172 |
else
|
2173 |
begin
|
2174 |
for i := 0 to FDatabases.Count - 1 do
|
2175 |
if FDatabases[i] <> nil then
|
2176 |
begin
|
2177 |
with TIBDatabase(FDatabases[i]) do
|
2178 |
if not Connected then
|
2179 |
if StreamedConnected then
|
2180 |
begin
|
2181 |
Open;
|
2182 |
StreamedConnected := False;
|
2183 |
end
|
2184 |
else
|
2185 |
IBError(ibxeDatabaseClosed, [nil]);
|
2186 |
end;
|
2187 |
if FTRParamsChanged then
|
2188 |
begin
|
2189 |
FTRParamsChanged := False;
|
2190 |
FTPB := GenerateTPB(Databases[0].FirebirdAPI,FTRParams);
|
2191 |
end;
|
2192 |
|
2193 |
ValidDatabaseCount := 0;
|
2194 |
for i := 0 to DatabaseCount - 1 do
|
2195 |
if Databases[i] <> nil then Inc(ValidDatabaseCount);
|
2196 |
|
2197 |
if ValidDatabaseCount = 1 then
|
2198 |
FTransactionIntf := Databases[0].Attachment.StartTransaction(FTPB,DefaultAction)
|
2199 |
else
|
2200 |
begin
|
2201 |
SetLength(Attachments,ValidDatabaseCount);
|
2202 |
for i := 0 to DatabaseCount - 1 do
|
2203 |
if Databases[i] <> nil then
|
2204 |
Attachments[i] := Databases[i].Attachment;
|
2205 |
|
2206 |
FTransactionIntf := Databases[0].FirebirdAPI.StartTransaction(Attachments,FTPB,DefaultAction);
|
2207 |
end;
|
2208 |
end;
|
2209 |
|
2210 |
if not (csDesigning in ComponentState) then
|
2211 |
MonitorHook.TRStart(Self);
|
2212 |
DoOnStartTransaction;
|
2213 |
end;
|
2214 |
|
2215 |
procedure TIBTransaction.TimeoutTransaction(Sender: TObject);
|
2216 |
begin
|
2217 |
if InTransaction then
|
2218 |
begin
|
2219 |
if not TransactionIntf.HasActivity then
|
2220 |
begin
|
2221 |
EndTransaction(FDefaultAction, True);
|
2222 |
if Assigned(FOnIdleTimer) then
|
2223 |
FOnIdleTimer(Self);
|
2224 |
end
|
2225 |
end;
|
2226 |
end;
|
2227 |
|
2228 |
procedure TIBTransaction.TRParamsChange(Sender: TObject);
|
2229 |
begin
|
2230 |
FTRParamsChanged := True;
|
2231 |
end;
|
2232 |
|
2233 |
procedure TIBTransaction.TRParamsChanging(Sender: TObject);
|
2234 |
begin
|
2235 |
EnsureNotInTransaction;
|
2236 |
CheckNotInTransaction;
|
2237 |
FTransactionIntf := nil;
|
2238 |
end;
|
2239 |
|
2240 |
{ TIBBase }
|
2241 |
constructor TIBBase.Create(AOwner: TObject);
|
2242 |
begin
|
2243 |
FOwner := AOwner;
|
2244 |
end;
|
2245 |
|
2246 |
destructor TIBBase.Destroy;
|
2247 |
begin
|
2248 |
SetDatabase(nil);
|
2249 |
SetTransaction(nil);
|
2250 |
inherited Destroy;
|
2251 |
end;
|
2252 |
|
2253 |
procedure TIBBase.HandleException(Sender: TObject);
|
2254 |
begin
|
2255 |
if assigned(Database) then
|
2256 |
Database.HandleException(Sender)
|
2257 |
else
|
2258 |
SysUtils.ShowException(ExceptObject,ExceptAddr);
|
2259 |
end;
|
2260 |
|
2261 |
procedure TIBBase.SetCursor;
|
2262 |
begin
|
2263 |
if Assigned(Database) and not Database.SQLHourGlass then
|
2264 |
Exit;
|
2265 |
if assigned(IBGUIInterface) then
|
2266 |
IBGUIInterface.SetCursor;
|
2267 |
end;
|
2268 |
|
2269 |
procedure TIBBase.RestoreCursor;
|
2270 |
begin
|
2271 |
if Assigned(Database) and not Database.SQLHourGlass then
|
2272 |
Exit;
|
2273 |
if assigned(IBGUIInterface) then
|
2274 |
IBGUIInterface.RestoreCursor;
|
2275 |
end;
|
2276 |
|
2277 |
procedure TIBBase.CheckDatabase;
|
2278 |
begin
|
2279 |
if (FDatabase = nil) then
|
2280 |
IBError(ibxeDatabaseNotAssigned, [nil]);
|
2281 |
FDatabase.CheckActive;
|
2282 |
end;
|
2283 |
|
2284 |
procedure TIBBase.CheckTransaction;
|
2285 |
begin
|
2286 |
if FTransaction = nil then
|
2287 |
IBError(ibxeTransactionNotAssigned, [nil]);
|
2288 |
FTransaction.CheckInTransaction;
|
2289 |
end;
|
2290 |
|
2291 |
procedure TIBBase.DoBeforeDatabaseConnect(DBParams: TStrings;
|
2292 |
var DBName: string; var CreateIfNotExists: boolean);
|
2293 |
begin
|
2294 |
if assigned(FBeforeDatabaseConnect) then
|
2295 |
BeforeDatabaseConnect(self,DBParams,DBName,CreateIfNotExists);
|
2296 |
end;
|
2297 |
|
2298 |
procedure TIBBase.DoAfterDatabaseConnect;
|
2299 |
begin
|
2300 |
if assigned(FAfterDatabaseConnect) then
|
2301 |
AfterDatabaseConnect(self);
|
2302 |
end;
|
2303 |
|
2304 |
procedure TIBBase.DoBeforeDatabaseDisconnect;
|
2305 |
begin
|
2306 |
if Assigned(BeforeDatabaseDisconnect) then
|
2307 |
BeforeDatabaseDisconnect(Self);
|
2308 |
end;
|
2309 |
|
2310 |
procedure TIBBase.DoAfterDatabaseDisconnect;
|
2311 |
begin
|
2312 |
if Assigned(AfterDatabaseDisconnect) then
|
2313 |
AfterDatabaseDisconnect(Self);
|
2314 |
end;
|
2315 |
|
2316 |
procedure TIBBase.DoDatabaseFree;
|
2317 |
begin
|
2318 |
if Assigned(OnDatabaseFree) then
|
2319 |
OnDatabaseFree(Self);
|
2320 |
SetDatabase(nil);
|
2321 |
SetTransaction(nil);
|
2322 |
end;
|
2323 |
|
2324 |
procedure TIBBase.DoBeforeTransactionEnd(Action: TTransactionAction);
|
2325 |
begin
|
2326 |
if Assigned(BeforeTransactionEnd) then
|
2327 |
BeforeTransactionEnd(Self,Action);
|
2328 |
end;
|
2329 |
|
2330 |
procedure TIBBase.DoAfterTransactionEnd;
|
2331 |
begin
|
2332 |
if Assigned(AfterTransactionEnd) then
|
2333 |
AfterTransactionEnd(Self);
|
2334 |
end;
|
2335 |
|
2336 |
procedure TIBBase.DoTransactionFree;
|
2337 |
begin
|
2338 |
if Assigned(OnTransactionFree) then
|
2339 |
OnTransactionFree(Self);
|
2340 |
FTransaction := nil;
|
2341 |
end;
|
2342 |
|
2343 |
procedure TIBBase.DoAfterExecQuery(Sender: TObject);
|
2344 |
begin
|
2345 |
if FTransaction <> nil then
|
2346 |
FTransaction.DoAfterExecQuery(Sender);
|
2347 |
end;
|
2348 |
|
2349 |
procedure TIBBase.DoAfterEdit(Sender: TObject);
|
2350 |
begin
|
2351 |
if FTransaction <> nil then
|
2352 |
FTransaction.DoAfterEdit(Sender);
|
2353 |
end;
|
2354 |
|
2355 |
procedure TIBBase.DoAfterDelete(Sender: TObject);
|
2356 |
begin
|
2357 |
if FTransaction <> nil then
|
2358 |
FTransaction.DoAfterDelete(Sender);
|
2359 |
end;
|
2360 |
|
2361 |
procedure TIBBase.DoAfterInsert(Sender: TObject);
|
2362 |
begin
|
2363 |
if FTransaction <> nil then
|
2364 |
FTransaction.DoAfterInsert(Sender);
|
2365 |
end;
|
2366 |
|
2367 |
procedure TIBBase.DoAfterPost(Sender: TObject);
|
2368 |
begin
|
2369 |
if FTransaction <> nil then
|
2370 |
FTransaction.DoAfterPost(Sender);
|
2371 |
end;
|
2372 |
|
2373 |
procedure TIBBase.DoOnCreateDatabase;
|
2374 |
begin
|
2375 |
if assigned(FOnCreateDatabase) then
|
2376 |
OnCreateDatabase(self);
|
2377 |
end;
|
2378 |
|
2379 |
procedure TIBBase.SetDatabase(Value: TIBDatabase);
|
2380 |
begin
|
2381 |
if (FDatabase <> nil) then
|
2382 |
FDatabase.RemoveSQLObject(FIndexInDatabase);
|
2383 |
FDatabase := Value;
|
2384 |
if (FDatabase <> nil) then
|
2385 |
begin
|
2386 |
FIndexInDatabase := FDatabase.AddSQLObject(Self);
|
2387 |
if (FTransaction = nil) then
|
2388 |
Transaction := FDatabase.FindDefaultTransaction;
|
2389 |
end;
|
2390 |
end;
|
2391 |
|
2392 |
procedure TIBBase.SetTransaction(Value: TIBTransaction);
|
2393 |
begin
|
2394 |
if (FTransaction <> nil) then
|
2395 |
FTransaction.RemoveSQLObject(FIndexInTransaction);
|
2396 |
FTransaction := Value;
|
2397 |
if (FTransaction <> nil) then
|
2398 |
begin
|
2399 |
FIndexInTransaction := FTransaction.AddSQLObject(Self);
|
2400 |
if (FDatabase = nil) then
|
2401 |
Database := FTransaction.FindDefaultDatabase;
|
2402 |
end;
|
2403 |
end;
|
2404 |
|
2405 |
{ GenerateDPB -
|
2406 |
Given a string containing a textual representation
|
2407 |
of the database parameters, generate a database
|
2408 |
parameter buffer, and return it and its length
|
2409 |
in DPB and DPBLength, respectively. }
|
2410 |
|
2411 |
function TIBDataBase.GenerateDPB(FirebirdAPI: IFirebirdAPI; sl: TStrings): IDPB;
|
2412 |
var
|
2413 |
i, j: Integer;
|
2414 |
DPBVal: UShort;
|
2415 |
ParamName, ParamValue: string;
|
2416 |
begin
|
2417 |
Result := FirebirdAPI.AllocateDPB;
|
2418 |
|
2419 |
{Iterate through the textual database parameters, constructing
|
2420 |
a DPB on-the-fly }
|
2421 |
for i := 0 to sl.Count - 1 do
|
2422 |
begin
|
2423 |
{ Get the parameter's name and value from the list,
|
2424 |
and make sure that the name is all lowercase with
|
2425 |
no leading 'isc_dpb_' prefix
|
2426 |
}
|
2427 |
if (Trim(sl.Names[i]) = '') then
|
2428 |
continue;
|
2429 |
ParamName := LowerCase(sl.Names[i]); {mbcs ok}
|
2430 |
ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
|
2431 |
if (Pos(DPBPrefix, ParamName) = 1) then {mbcs ok}
|
2432 |
Delete(ParamName, 1, Length(DPBPrefix));
|
2433 |
{ We want to translate the parameter name to some Integer
|
2434 |
value. We do this by scanning through a list of known
|
2435 |
database parameter names (DPBConstantNames, defined above) }
|
2436 |
DPBVal := 0;
|
2437 |
{ Find the parameter }
|
2438 |
for j := 1 to isc_dpb_last_dpb_constant do
|
2439 |
if (ParamName = DPBConstantNames[j]) then
|
2440 |
begin
|
2441 |
DPBVal := j;
|
2442 |
break;
|
2443 |
end;
|
2444 |
{ A database parameter either contains a string value (case 1)
|
2445 |
or an Integer value (case 2)
|
2446 |
or no value at all (case 3)
|
2447 |
or an error needs to be generated (case else) }
|
2448 |
case DPBVal of
|
2449 |
isc_dpb_user_name, isc_dpb_password, isc_dpb_password_enc,
|
2450 |
isc_dpb_sys_user_name, isc_dpb_license, isc_dpb_encrypt_key,
|
2451 |
isc_dpb_lc_messages, isc_dpb_lc_ctype, isc_dpb_page_size,
|
2452 |
isc_dpb_sql_role_name, isc_dpb_sql_dialect:
|
2453 |
begin
|
2454 |
if DPBVal = isc_dpb_sql_dialect then
|
2455 |
ParamValue[1] := Char(Ord(ParamValue[1]) - 48);
|
2456 |
Result.Add(DPBVal).SetAsString(ParamValue);
|
2457 |
end;
|
2458 |
|
2459 |
isc_dpb_num_buffers, isc_dpb_dbkey_scope, isc_dpb_force_write,
|
2460 |
isc_dpb_no_reserve, isc_dpb_damaged, isc_dpb_verify:
|
2461 |
Result.Add(DPBVal).SetAsByte(byte(ParamValue[1]));
|
2462 |
|
2463 |
isc_dpb_sweep:
|
2464 |
Result.Add(DPBVal).SetAsByte(isc_dpb_records);
|
2465 |
|
2466 |
isc_dpb_sweep_interval:
|
2467 |
Result.Add(DPBVal).SetAsInteger(StrToInt(ParamValue));
|
2468 |
|
2469 |
isc_dpb_activate_shadow, isc_dpb_delete_shadow, isc_dpb_begin_log,
|
2470 |
isc_dpb_map_attach, isc_dpb_quit_log:
|
2471 |
Result.Add(DPBVal).SetAsByte(0);
|
2472 |
else
|
2473 |
begin
|
2474 |
if (DPBVal > 0) and
|
2475 |
(DPBVal <= isc_dpb_last_dpb_constant) then
|
2476 |
IBError(ibxeDPBConstantNotSupported, [DPBConstantNames[DPBVal]])
|
2477 |
else
|
2478 |
IBError(ibxeDPBConstantUnknownEx, [sl.Names[i]]);
|
2479 |
end;
|
2480 |
end;
|
2481 |
end;
|
2482 |
if FConfigOverrides.Count > 0 then
|
2483 |
Result.Add(isc_dpb_config).SetAsString(FConfigOverrides.Text);
|
2484 |
end;
|
2485 |
|
2486 |
{ GenerateTPB -
|
2487 |
Given a string containing a textual representation
|
2488 |
of the transaction parameters, generate a transaction
|
2489 |
parameter buffer, and return it and its length in
|
2490 |
TPB and TPBLength, respectively. }
|
2491 |
function TIBTransaction.GenerateTPB(FirebirdAPI: IFirebirdAPI; sl: TStrings): ITPB;
|
2492 |
var
|
2493 |
i, j, TPBVal: Integer;
|
2494 |
ParamName, ParamValue: string;
|
2495 |
begin
|
2496 |
Result := FirebirdAPI.AllocateTPB;
|
2497 |
for i := 0 to sl.Count - 1 do
|
2498 |
begin
|
2499 |
if (Trim(sl[i]) = '') then
|
2500 |
Continue;
|
2501 |
|
2502 |
if (Pos('=', sl[i]) = 0) then {mbcs ok}
|
2503 |
ParamName := LowerCase(sl[i]) {mbcs ok}
|
2504 |
else
|
2505 |
begin
|
2506 |
ParamName := LowerCase(sl.Names[i]); {mbcs ok}
|
2507 |
ParamValue := Copy(sl[i], Pos('=', sl[i]) + 1, Length(sl[i])); {mbcs ok}
|
2508 |
end;
|
2509 |
if (Pos(TPBPrefix, ParamName) = 1) then {mbcs ok}
|
2510 |
Delete(ParamName, 1, Length(TPBPrefix));
|
2511 |
TPBVal := 0;
|
2512 |
{ Find the parameter }
|
2513 |
for j := 1 to isc_tpb_last_tpb_constant do
|
2514 |
if (ParamName = TPBConstantNames[j]) then
|
2515 |
begin
|
2516 |
TPBVal := j;
|
2517 |
break;
|
2518 |
end;
|
2519 |
{ Now act on it }
|
2520 |
case TPBVal of
|
2521 |
isc_tpb_consistency, isc_tpb_exclusive, isc_tpb_protected,
|
2522 |
isc_tpb_concurrency, isc_tpb_shared, isc_tpb_wait, isc_tpb_nowait,
|
2523 |
isc_tpb_read, isc_tpb_write, isc_tpb_ignore_limbo,
|
2524 |
isc_tpb_read_committed, isc_tpb_rec_version, isc_tpb_no_rec_version:
|
2525 |
Result.Add(TPBVal);
|
2526 |
|
2527 |
isc_tpb_lock_read, isc_tpb_lock_write:
|
2528 |
Result.Add(TPBVal).SetAsString(ParamValue);
|
2529 |
|
2530 |
else
|
2531 |
begin
|
2532 |
if (TPBVal > 0) and
|
2533 |
(TPBVal <= isc_tpb_last_tpb_constant) then
|
2534 |
IBError(ibxeTPBConstantNotSupported, [TPBConstantNames[TPBVal]])
|
2535 |
else
|
2536 |
IBError(ibxeTPBConstantUnknownEx, [sl.Names[i]]);
|
2537 |
end;
|
2538 |
end;
|
2539 |
end;
|
2540 |
end;
|
2541 |
|
2542 |
end.
|
2543 |
|
2544 |
|
2545 |
|
2546 |
|
2547 |
|