/
SQLConnection.prg
2395 lines (1729 loc) · 52.1 KB
/
SQLConnection.prg
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
USING System.Collections.Generic
/// <include file="SQL.xml" path="doc/SQLConnection/*" />
CLASS SQLConnection
HIDDEN cSourceName AS STRING
HIDDEN cUser AS STRING
HIDDEN cAuthString AS STRING
HIDDEN cConnectString AS STRING
HIDDEN hEnv AS PTR
HIDDEN hDbc AS PTR
HIDDEN oErrInfo AS SQLErrorInfo
HIDDEN lConnFlag AS LOGIC
HIDDEN lScrollCsr AS LOGIC
HIDDEN lPositionOps AS LOGIC
HIDDEN nConcurrency AS INT
HIDDEN lConnOverride AS LOGIC
HIDDEN lEnvOverride AS LOGIC
HIDDEN aStmts AS ARRAY
HIDDEN cIdentifierQuoteChar AS STRING
EXPORT nActiveStmts AS INT
EXPORT lSelect4Update AS LOGIC
EXPORT lUseSingleConnection AS LOGIC
PROTECT nODBCCursors AS INT
PROTECT nAccessMode AS INT
PROTECT nIsolationOption AS INT
STATIC saInfoString AS IList<INT>
STATIC saInfoWord AS IList<INT>
STATIC saInfoDWord AS IList<INT>
STATIC CONSTRUCTOR
InitGlobals()
/// <exclude />
METHOD __AllocConnect() AS LOGIC STRICT
LOCAL hDbcNew AS PTR
LOCAL nRetCode AS INT
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__AllocConnect()" )
#ENDIF
IF ( hDbc = SQL_NULL_HDBC )
//RvdH 050413 This should be replaced with SqlAllocHandle
nRetCode := SQLAllocConnect( hEnv, @hDbcNew )
IF nRetCode = SQL_SUCCESS
oErrInfo:ErrorFlag := FALSE
SELF:hDbc := hDbcNew
#IFDEF __DEBUG__
__SQLOutputDebug( "** hDbc="+AsString( hDbc ) )
#ENDIF
lRet := TRUE
ELSE
oErrInfo := SQLErrorInfo{ SELF, ;
#AllocConnect, ;
hEnv, ;
SQL_NULL_HDBC, ;
SQL_NULL_HSTMT }
oErrInfo:ReturnCode := nRetCode
ENDIF
ELSE
SELF:__GenerateSqlError( __CavoStr( __CAVOSTR_SQLCLASS__CON_ALLOC ), #AllocConnect )
ENDIF
RETURN lRet
/// <exclude />
METHOD __AllocEnv() AS LOGIC STRICT
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__AllocEnv()" )
#ENDIF
IF hEnv = SQL_NULL_HENV
SELF:hEnv := __GetMyEnv()
IF hEnv == SQL_NULL_HENV
oErrInfo := SQLErrorInfo{ SELF, ;
#AllocEnv, ;
SQL_NULL_HENV, ;
SQL_NULL_HDBC, ;
SQL_NULL_HSTMT }
ELSE
oErrInfo:ErrorFlag := FALSE
lRet := TRUE
ENDIF
ELSE
SELF:__GenerateSqlError( __CavoStr( __CAVOSTR_SQLCLASS__ENV_ALLOC ), #AllocEnv )
ENDIF
RETURN lRet
/// <exclude />
METHOD __CheckActiveStmts() AS LOGIC STRICT
LOCAL nBytes AS SHORTINT // dcaton 070206 was INT
LOCAL nActStmts AS INT
LOCAL nRetCode AS INT
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__CheckActiveStmts()" )
#ENDIF
SELF:nActiveStmts := 0
IF ( !SELF:lUseSingleConnection )
nRetCode := SQLGetInfo( hDbc, ;
SQL_ACTIVE_STATEMENTS, ;
@nActStmts, ;
_SIZEOF( INT ), ;
@nBytes )
IF nRetCode = SQL_SUCCESS
SELF:nActiveStmts := nActStmts
oErrInfo:ErrorFlag := FALSE
#IFDEF __DEBUG__
__SQLOutputDebug( " __CheckActiveStmts()="+AsString( nActiveStmts ) )
#ENDIF
lRet := TRUE
ENDIF
ENDIF
RETURN lRet
/// <exclude />
METHOD __CheckIdentQuoteChar() AS LOGIC STRICT
LOCAL nBytes AS SHORTINT // dcaton 070206 was INT
LOCAL nRetCode AS INT
LOCAL lRet AS LOGIC
LOCAL DIM bData[10] AS BYTE
SELF:cIdentifierQuoteChar := NULL_STRING
IF hDbc != SQL_NULL_HDBC
nRetCode := SQLGetInfo( hDbc, ;
SQL_IDENTIFIER_QUOTE_CHAR, ;
@bData, ;
10, ;
@nBytes )
IF nRetCode = SQL_SUCCESS
IF nBytes != 0
SELF:cIdentifierQuoteChar := Psz2String( @bData )
ENDIF
lRet := TRUE
ENDIF
ENDIF
oErrInfo:ErrorFlag := FALSE
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__CheckIdentQuoteChar()="+AsString( cIdentifierQuoteChar ) )
#ENDIF
RETURN lRet
/// <exclude />
METHOD __CheckPositionOps() AS LOGIC STRICT
LOCAL nPosition AS INT
LOCAL nRetCode AS INT
LOCAL lRet AS LOGIC
LOCAL nBytes AS SHORTINT // dcaton 070206 was INT
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__CheckPositionOps()" )
#ENDIF
lPositionOps := TRUE
lSelect4Update := FALSE
nRetCode := SQLGetInfo( hDbc, ;
SQL_POSITIONED_STATEMENTS, ;
@nPosition, ;
_SIZEOF( LONGINT ), ;
@nBytes )
IF nRetCode = SQL_SUCCESS
//
// Can we do update or delete 'where current of'?
//
IF _AND ( nPosition, SQL_PS_POSITIONED_DELETE ) = 0 .OR. ;
_AND( nPosition, SQL_PS_POSITIONED_UPDATE ) = 0
lPositionOps := FALSE
ENDIF
//
// Can we select 'for update of'?
//
IF _AND( nPosition, SQL_PS_SELECT_FOR_UPDATE ) != 0
lSelect4Update := TRUE
ENDIF
oErrInfo:ErrorFlag := FALSE
lRet := TRUE
ENDIF
RETURN lRet
/// <exclude />
METHOD __CheckQE() AS LOGIC STRICT
//
// Check Q+E driver ( say we're CA )
//
LOCAL ptrValue AS PTR
LOCAL nValue AS DWORD
LOCAL nOption AS WORD
LOCAL nRet AS INT
#ifdef __VULCAN__ // bug, Vulcan can't resolve typed func ptrs in locals, fix this
LOCAL pFunc AS PTR
#else
LOCAL pFunc AS __SQLSetConnectAttr PTR
#endif
LOCAL hInst AS PTR
LOCAL nSize AS DWORD
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__CheckQE()" )
#ENDIF
hInst := LoadLibrary( PSZ( _CAST,"ODBC32.DLL" ) )
IF hInst != 0
pFunc := GetProcAddress( hInst, PSZ( _CAST, "SQLSetConnectAttr" ) )
ENDIF
IF pFunc = NULL
nOption := 1041
ptrValue := String2Psz( __CAVOSTR_SQLCLASS__QE_LIC )
nValue := DWORD( _CAST, ptrValue )
//RvdH 050413 This should be replaced with a Call to SQLSetConnectAttr()
SQLSetConnectOption( hDbc, nOption, nValue )
nOption := 1042
ptrValue := String2Psz( __CAVOSTR_SQLCLASS__QE_PSWD )
nValue := DWORD( _CAST, ptrValue )
//RvdH 050413 This should be replaced with a Call to SQLSetConnectAttr()
SQLSetConnectOption( hDbc, nOption, nValue )
ELSE
nOption := 1041
ptrValue := String2Psz( __CAVOSTR_SQLCLASS__QE_LIC )
nSize := SLen( __CAVOSTR_SQLCLASS__QE_LIC )
#ifdef __VULCAN__
nRet := PCallNative<SHORT>( pFunc, hDbc, WORD( _CAST,nOption ), ptrValue, WORD( _CAST,nSize + 1 ) )
#else
nRet := PCALL( pFunc, hDbc, WORD( _CAST,nOption ), ptrValue, WORD( _CAST,nSize + 1 ) )
#endif
IF nRet == SQL_SUCCESS
nOption := 1042
ptrValue := String2Psz( __CAVOSTR_SQLCLASS__QE_PSWD )
nSize := SLen( __CAVOSTR_SQLCLASS__QE_PSWD )
#ifdef __VULCAN__
nRet := PCallNative<SHORT>( pFunc, hDbc, WORD( _CAST,nOption ), ptrValue, WORD( _CAST,nSize + 1 ) )
#else
nRet := PCALL( pFunc, hDbc, WORD( _CAST,nOption ), ptrValue, WORD( _CAST,nSize + 1 ) )
#endif
ENDIF
ENDIF
IF hInst != NULL
FreeLibrary( hInst )
ENDIF
RETURN TRUE
/// <exclude />
METHOD __CheckScrollable() AS LOGIC STRICT
//
// Check if a driver supports scrollable cursors; sets lScrollCsr flag
// Driver must: 1. Support the SQLExtendedFetch function
// 2. SQLGetInfo( FETCH_DIRECTION ) supports backwards
// Also check & save the Concurrency type supported
//
LOCAL nExists AS WORD // dcaton 070206 was INT
LOCAL nDirection AS INT
LOCAL nConcur AS INT
LOCAL nBytes AS SHORTINT // dcaton 070206 was INT
LOCAL nRetCode AS INT
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__CheckScrollable()" )
#ENDIF
IF SELF:lScrollCsr = FALSE
RETURN FALSE
ENDIF
nConcurrency := SQL_CONCUR_READ_ONLY
IF SQLGetFunctions( hDbc, SQL_API_SQLEXTENDEDFETCH, @nExists ) != SQL_SUCCESS
RETURN FALSE
ENDIF
IF nExists != 1
RETURN FALSE
ENDIF
nRetCode := SQLGetInfo( hDbc, SQL_FETCH_DIRECTION, @nDirection, _SIZEOF( LONGINT ), @nBytes )
IF nRetCode != SQL_SUCCESS
RETURN FALSE
ENDIF
IF _AND( nDirection, SQL_FD_FETCH_NEXT ) = SQL_FD_FETCH_NEXT .AND. ;
_AND( nDirection, SQL_FD_FETCH_FIRST ) = SQL_FD_FETCH_FIRST .AND. ;
_AND( nDirection, SQL_FD_FETCH_LAST ) = SQL_FD_FETCH_LAST .AND. ;
_AND( nDirection, SQL_FD_FETCH_PRIOR ) = SQL_FD_FETCH_PRIOR .AND. ;
_AND( nDirection, SQL_FD_FETCH_ABSOLUTE )= SQL_FD_FETCH_ABSOLUTE .AND. ;
_AND( nDirection, SQL_FD_FETCH_RELATIVE )= SQL_FD_FETCH_RELATIVE
SELF:lScrollCsr := TRUE // OK, use the driver!
nRetCode := SQLGetInfo( hDbc, ;
SQL_SCROLL_CONCURRENCY, ;
@nConcur, ;
_SIZEOF( LONGINT ), ;
@nBytes )
IF nRetCode == SQL_SUCCESS
IF _AND( nConcur,SQL_SCCO_OPT_VALUES ) = SQL_SCCO_OPT_VALUES
nConcurrency := SQL_CONCUR_VALUES
ELSEIF _AND( nConcur,SQL_SCCO_OPT_TIMESTAMP )=SQL_SCCO_OPT_TIMESTAMP
nConcurrency := SQL_CONCUR_TIMESTAMP
ELSEIF _AND( nConcur,SQL_SCCO_LOCK ) = SQL_SCCO_LOCK
nConcurrency := SQL_CONCUR_LOCK
ELSEIF _AND( nConcur,SQL_SCCO_READ_ONLY ) = SQL_SCCO_READ_ONLY
nConcurrency := SQL_CONCUR_READ_ONLY
ENDIF
#IFDEF __DEBUG__
__SQLOutputDebug( " nConcur=" + AsString( nConcurrency ) )
__SQLOutputDebug( " lScrollCsr=" + AsString( lScrollCsr ) )
#ENDIF
ENDIF
ENDIF
RETURN SELF:lScrollCsr
/// <exclude />
METHOD __CloseExtraStmt(oStmt AS SQLStatement) AS VOID STRICT
LOCAL oNewStmt AS SQLStatement
oNewStmt := oStmt
oNewStmt:FreeStmt(SQL_DROP)
IF oNewStmt:Connection != SELF
oNewStmt:__Connection:__Free()
ENDIF
RETURN
/// <exclude />
METHOD __Free() AS LOGIC STRICT
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__Free()" )
#ENDIF
SELF:Disconnect()
SELF:__FreeConnect()
RETURN SELF:__FreeEnv()
/// <exclude />
METHOD __FreeConnect() AS LOGIC STRICT
LOCAL nRetCode AS INT
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__FreeConnect() hDbc="+AsString( hDbc ) )
#ENDIF
IF hDbc = SQL_NULL_HDBC
SELF:__GenerateSqlError( __CavoStr( __CAVOSTR_SQLCLASS__CON_FREE ), #FreeConnect )
ELSE
nRetCode := SQLFreeConnect( hDbc )
IF nRetCode = SQL_SUCCESS
SELF:hDbc := SQL_NULL_HDBC
oErrInfo:ErrorFlag := FALSE
lRet := TRUE
ELSE
oErrInfo := SQLErrorInfo{ SELF, #FreeConnect, hEnv, ;
SQL_NULL_HDBC, SQL_NULL_HSTMT }
oErrInfo:ReturnCode := nRetCode
ENDIF
ENDIF
RETURN lRet
/// <exclude />
METHOD __FreeEnv () AS LOGIC STRICT
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__FreeEnv hEnv="+AsString( hEnv ) )
#ENDIF
IF hEnv = SQL_NULL_HENV
SELF:__GenerateSqlError( __CavoStr( __CAVOSTR_SQLCLASS__ENV_FREE ), #FreeEnv )
ELSE
IF __DropMyEnv( hEnv )
SELF:hEnv := SQL_NULL_HENV
oErrInfo:ErrorFlag := FALSE
lRet := TRUE
ELSE
oErrInfo := SQLErrorInfo{ SELF, ;
#FreeEnv, ;
SQL_NULL_HENV, ;
SQL_NULL_HDBC, ;
SQL_NULL_HSTMT }
ENDIF
ENDIF
RETURN lRet
/// <exclude />
METHOD __GenerateSqlError( cErrorString AS STRING, symMethod AS SYMBOL) AS SQLErrorInfo
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:__GenerateSQLError( "+ ;
AsString( cErrorString )+","+AsString( symMethod )+" )" )
#ENDIF
SELF:oErrInfo:ErrorMessage := __CavoStr( __CAVOSTR_SQLCLASS__ODBC_VO ) + ;
Symbol2String( ClassName( SELF ) ) + ;
":" + Symbol2String( symMethod ) + ;
" " + cErrorString
SELF:oErrInfo:NativeError := 0
SELF:oErrInfo:SQLState := __CavoStr( __CAVOSTR_SQLCLASS__GENERAL_ERR )
SELF:oErrInfo:ErrorFlag := TRUE
SELF:oErrInfo:SubSystem := __CavoStr( __CAVOSTR_SQLCLASS_SUBSYS )
SELF:oErrInfo:MethodSelf := SELF
SELF:oErrInfo:FuncSym := symMethod
SELF:oErrInfo:CallFuncSym := symMethod
SELF:oErrInfo:Severity := ES_ERROR
SELF:oErrInfo:ReturnCode := SQL_SUCCESS
RETURN oErrInfo
/// <exclude />
METHOD __GetExtraStmt(cStmtText AS STRING) AS SqlStatement STRICT
LOCAL oNewConn AS SQLConnection
LOCAL oNewStmt AS SQLStatement
IF SELF:nActiveStmts = 1
oNewConn := SQLConnection{ SELF:cSourceName, ;
SELF:cUser, ;
SELF:cAuthString }
IF !oNewConn:Connected
RETURN NULL_OBJECT
ENDIF
ELSE
oNewConn := SELF
ENDIF
oNewStmt := SQLStatement{ cStmtText, oNewConn }
RETURN oNewStmt
/// <exclude />
METHOD __RegisterStmt( oStmt AS SQLStatement ) AS LOGIC STRICT
LOCAL nIndex AS DWORD
LOCAL nCount AS DWORD
LOCAL lFound AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** __RegisterStmt( "+AsString( oStmt:StatementHandle )+" )" )
#ENDIF
nCount := ALen( aStmts )
//
// Check if already registered...
//
FOR nIndex := 1 TO nCount
IF aStmts[nIndex] != NIL .AND. ;
aStmts[nIndex] = oStmt
#IFDEF __DEBUG__
__SQLOutputDebug( "** already registered, index="+AsString( nIndex ) )
#ENDIF
lFound := TRUE
EXIT
ENDIF
NEXT
IF !lFound
AAdd( aStmts, oStmt )
ENDIF
RETURN TRUE
/// <exclude />
METHOD __Transact( nType AS WORD) AS LOGIC STRICT
//
// Commit/Rollback transaction; returns TRUE if successful
//
LOCAL nRetCode AS INT
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:Transact()" )
#ENDIF
nRetCode := SQLTransact( SQL_NULL_HENV, SELF:ConnHandle, nType )
IF nRetCode = SQL_SUCCESS
SELF:oErrInfo:ErrorFlag := FALSE
lRet := TRUE
ELSE
oErrInfo := SQLErrorInfo{ SELF, ;
#Transact, ;
SELF:EnvHandle, ;
SELF:ConnHandle, ;
SQL_NULL_HSTMT }
oErrInfo:ReturnCode := nRetCode
ENDIF
RETURN lRet
/// <exclude />
METHOD __UnregisterStmt( oStmt AS SQLStatement ) AS LOGIC STRICT
LOCAL nIndex AS DWORD
LOCAL nCount AS DWORD
LOCAL lRet AS LOGIC
#IFDEF __DEBUG__
__SQLOutputDebug( "** __UnRegisterStmt( "+AsString( oStmt:StatementHandle )+" )" )
#ENDIF
nCount := ALen( aStmts )
FOR nIndex := 1 TO nCount
IF aStmts[nIndex] != NIL .AND. ;
aStmts[nIndex] = oStmt
#IFDEF __DEBUG__
__SQLOutputDebug( "** found oStmt, index="+AsString( nIndex ) )
#ENDIF
ADel( aStmts, nIndex )
ASize( aStmts, nCount - 1 )
lRet := TRUE
EXIT
ENDIF
NEXT
RETURN lRet
/// <include file="SQL.xml" path="doc/SQLConnection.AccessMode/*" />
ACCESS AccessMode
RETURN SELF:nAccessMode
/// <include file="SQL.xml" path="doc/SQLConnection.AccessMode/*" />
ASSIGN AccessMode( nVal )
IF IsNumeric( nVal ) .AND. ;
( nVal == SQL_MODE_READ_ONLY .OR. ;
nVal == SQL_MODE_READ_WRITE )
SELF:SetConnectOption( SQL_ACCESS_MODE, nVal )
RETURN SELF:nAccessMode := nVal
ELSE
RETURN SELF:nAccessMode
ENDIF
//RETURN
/// <include file="SQL.xml" path="doc/SQLConnection.dtor/*" />
DESTRUCTOR()
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:Axit() hEnv="+ AsString( hEnv ) + ;
", hDbc="+ AsString( hDbc ) )
#ENDIF
RETURN SELF:Disconnect()
/// <include file="SQL.xml" path="doc/SQLConnection.BeginTransaction/*" />
METHOD BeginTransaction()
RETURN SELF:SetConnectOption( SQL_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF )
/// <include file="SQL.xml" path="doc/SQLConnection.Commit/*" />
METHOD Commit()
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:Commit()" )
#ENDIF
RETURN SELF:__Transact( SQL_COMMIT )
/// <include file="SQL.xml" path="doc/SQLConnection.Connect/*" />
METHOD Connect( cDataSource, cUserID, cPassword )
LOCAL nRetCode AS SHORTINT
LOCAL nTemp AS DWORD
LOCAL lRet AS LOGIC
LOCAL pUser AS PSZ
LOCAL pPassword AS PSZ
LOCAL pSource AS PSZ
// UH 11/13/2001
DEFAULT( @cDataSource, "" )
DEFAULT( @cUserID, "" )
DEFAULT( @cPassword, "" )
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:Connect( "+AsString( cDataSource )+","+ ;
AsString( cUserID )+","+AsString( cPassword )+" )" )
#ENDIF
IF !SELF:lConnFlag
SELF:cSourceName := cDataSource
SELF:cUser := cUserID
SELF:cAuthString := cPassword
nTemp := SLen( cDataSource )
pSource := MemAlloc( nTemp+1 )
IF pSource == NULL_PSZ
SQLThrowOutOfMemoryError()
RETURN FALSE
ENDIF
//RvdH 030925 Fixes for BUG # 60
//RvdH 030925 Changed to nTemp > 0
//RvdH 030925 Changed to use MemCopyString
IF nTemp > 0
//MemCopy( pSource, PTR( _CAST, cDataSource ), nTemp )
MemCopyString( pSource, cDataSource , nTemp )
ELSE
MemSet( pSource, 0, 1 )
ENDIF
nTemp := SLen( SELF:cUser )
pUser := MemAlloc( nTemp+1 )
IF pUser == NULL_PSZ
MemFree( pSource )
SQLThrowOutOfMemoryError()
RETURN FALSE
ENDIF
//RvdH 030925 Changed to nTemp > 0
//RvdH 030925 Changed to use MemCopyString
IF nTemp > 0
//MemCopy( pUser, PTR( _CAST, SELF:cUser ), nTemp )
MemCopyString( pUser, SELF:cUser , nTemp )
ELSE
MemSet( pUser, 0, 1 )
ENDIF
nTemp := SLen( SELF:cAuthString )
pPassword := MemAlloc( nTemp+1 )
IF pPassword == NULL_PSZ
MemFree( pUser )
MemFree( pSource )
SQLThrowOutOfMemoryError()
RETURN FALSE
ENDIF
//RvdH 030925 Changed to nTemp > 0
//RvdH 030925 Changed to use MemCopyString
IF nTemp > 0
//MemCopy( pPassword, PTR( _CAST, SELF:cAuthString ), nTemp )
MemCopyString(pPassword, SELF:cAuthString , nTemp )
ELSE
MemSet( pPassword, 0, 1 )
ENDIF
nRetCode := SQLConnect( SELF:hDbc, ;
pSource, ;
SQL_NTS, ;
pUser, ;
SQL_NTS, ;
pPassword, ;
SQL_NTS )
MemFree( pSource )
MemFree( pUser )
MemFree( pPassword )
IF nRetCode != SQL_SUCCESS .AND. nRetCode != SQL_SUCCESS_WITH_INFO
oErrInfo := SQLErrorInfo{ SELF, ;
#Connect,;
hEnv, ;
hDbc, ;
SQL_NULL_HSTMT }
oErrInfo:ReturnCode := nRetCode
lConnFlag := FALSE
IF lConnErrMsg
oErrInfo:ShowErrorMsg()
ENDIF
ELSE
lConnFlag := TRUE
SELF:__CheckScrollable()
SELF:__CheckPositionOps()
SELF:__CheckQE()
SELF:__CheckIdentQuoteChar()
SELF:__CheckActiveStmts()
SELF:cConnectString := __CAVOSTR_SQLCLASS__DSN + cSourceName
IF SLen( cUser ) != 0
cConnectString += Chr( 59 ) + __CAVOSTR_SQLCLASS__UID + cUser
ENDIF
IF SLen( cAuthString ) != 0
cConnectString += Chr( 59 ) + __CAVOSTR_SQLCLASS__PWD + cAuthString
ENDIF
oErrInfo:ErrorFlag := FALSE
lRet := TRUE
ENDIF
ELSE
SELF:__GenerateSqlError( __CavoStr( __CAVOSTR_SQLCLASS__CONNECTED ), #connect )
ENDIF
RETURN lRet
/// <include file="SQL.xml" path="doc/SQLConnection.Connected/*" />
ACCESS Connected
RETURN SELF:lConnFlag
/// <include file="SQL.xml" path="doc/SQLConnection.ConnectString/*" />
ACCESS ConnectString
RETURN SELF:cConnectString
/// <include file="SQL.xml" path="doc/SQLConnection.ConnHandle/*" />
ACCESS ConnHandle
RETURN SELF:hDbc
/// <include file="SQL.xml" path="doc/SQLConnection.ConnHandle/*" />
ASSIGN ConnHandle( uVal )
IF SELF:hDbc = SQL_NULL_HDBC
SELF:hDbc := uVal
ELSE
IF lConnFlag
IF !SELF:Disconnect()
oErrInfo:Throw()
ENDIF
ENDIF
IF !SELF:__FreeConnect()
oErrInfo:Throw()
ENDIF
SELF:hDbc := uVal
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:ConnHandle reassign hDbc="+AsString( hDbc ) )
#ENDIF
lConnOverride := TRUE
ENDIF
RETURN SELF:hDbc
/// <include file="SQL.xml" path="doc/SQLConnection.DataSource/*" />
ACCESS DataSource
RETURN cSourceName
/// <include file="SQL.xml" path="doc/SQLConnection.DataSource/*" />
ASSIGN DataSource( uVal )
IF !lConnFlag
SELF:cSourceName := uVal
ELSE
SELF:__GenerateSqlError( __CavoStr( __CAVOSTR_SQLCLASS__CONNECTED ), #DataSource )
oErrInfo:Throw()
ENDIF
RETURN SELF:cSourceName
/// <include file="SQL.xml" path="doc/SQLConnection.Disconnect/*" />
METHOD Disconnect()
LOCAL nRetCode AS SHORTINT
LOCAL lRet AS LOGIC
LOCAL nIndex AS DWORD
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:Disconnect(), hDbc="+ AsString( hDbc ) )
#ENDIF
FOR nIndex := 1 TO ALen( aStmts )
IF aStmts[nIndex] != NIL
((SqlStatement)aStmts[nIndex]):Destroy()
ENDIF
NEXT
IF lConnFlag .AND. !lConnOverride
IF hDbc = SQL_NULL_HDBC
lRet := TRUE
ELSE
#IFDEF __DEBUG__
__SQLOutputDebug( "** Disconnect, hDbc="+ AsString( hDbc ) )
#ENDIF
SELF:Rollback()
nRetCode := SQLDisconnect( hDbc )
IF nRetCode = SQL_SUCCESS
#IFDEF __DEBUG__
__SQLOutputDebug( "** Freeconnect, hDbc="+ AsString( hDbc ) )
#ENDIF
//RvdH 050413 This should be replaced with a Call to SQLFreeHandle()
SQLFreeConnect( hDbc )
__RemoveConnection( hDbc )
lRet := TRUE
ELSE
oErrInfo := SQLErrorInfo{SELF, ;
#Disconnect, ;
hEnv, ;
hDbc, SQL_NULL_HSTMT }
oErrInfo:ReturnCode := nRetCode
ENDIF
ENDIF
IF lRet
lConnFlag := FALSE
lScrollCsr := FALSE
nConcurrency := SQL_CONCUR_READ_ONLY
lPositionOps := TRUE
oErrInfo:ErrorFlag := FALSE
ENDIF
ELSE
lRet := TRUE
ENDIF
UnregisterAxit( SELF )
IF hEnv != SQL_NULL_HENV .AND. !lEnvOverride
__DropMyEnv( hEnv )
ENDIF
RETURN lRet
/// <include file="SQL.xml" path="doc/SQLConnection.DriverConnect/*" />
METHOD DriverConnect( hWindow, nDriverCompletion, cConnStrIn )
LOCAL nBytes AS SHORTINT // dcaton 070206 was INT
LOCAL nRetCode AS INT
LOCAL nStart AS DWORD
LOCAL nEnd AS DWORD
LOCAL pszConnect AS PSZ
LOCAL pszConStr AS PSZ
LOCAL nCompletion AS DWORD
LOCAL nSize AS SHORTINT
LOCAL lRet AS LOGIC
LOCAL hWnd AS PTR
#IFDEF __DEBUG__
__SQLOutputDebug( "** SQLConnection:DriverConnect( "+;
AsString( hWindow )+","+;
AsString( nDriverCompletion )+","+ ;
AsString( cConnStrIn )+" )" )
#ENDIF
IF IsNumeric( nDriverCompletion )
nCompletion := nDriverCompletion
ELSE
nCompletion := SQL_DRIVER_PROMPT
ENDIF
IF !lConnFlag
IF IsPtr( hWindow )
hWnd := hWindow
ENDIF
IF hWnd = NULL_PTR
hWnd := GetActiveWindow()
ENDIF