]> git.saurik.com Git - wxWidgets.git/blob - src/common/dbtable.cpp
projects / wxWidgets.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
fingers crossed..
[wxWidgets.git] / src / common / dbtable.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: dbtable.cpp
3 // Purpose: Implementation of the wxDbTable class.
4 // Author: Doug Card
5 // Modified by: George Tasker
6 // Bart Jourquin
7 // Mark Johnson
8 // Created: 9.96
9 // RCS-ID: $Id$
10 // Copyright: (c) 1996 Remstar International, Inc.
11 // Licence: wxWindows licence, plus:
12 // Notice: This class library and its intellectual design are free of charge for use,
13 // modification, enhancement, debugging under the following conditions:
14 // 1) These classes may only be used as part of the implementation of a
15 // wxWindows-based application
16 // 2) All enhancements and bug fixes are to be submitted back to the wxWindows
17 // user groups free of all charges for use with the wxWindows library.
18 // 3) These classes may not be distributed as part of any other class library,
19 // DLL, text (written or electronic), other than a complete distribution of
20 // the wxWindows GUI development toolkit.
21 ///////////////////////////////////////////////////////////////////////////////
22
23 /*
24 // SYNOPSIS START
25 // SYNOPSIS STOP
26 */
27 #ifdef __GNUG__
28 #pragma implementation "dbtable.h"
29 #endif
30
31 #include "wx/wxprec.h"
32
33 #ifdef __BORLANDC__
34 #pragma hdrstop
35 #endif
36
37 #ifdef DBDEBUG_CONSOLE
38 #include "iostream.h"
39 #include "wx/ioswrap.h"
40 #endif
41
42 #ifndef WX_PRECOMP
43 #include "wx/string.h"
44 #include "wx/object.h"
45 #include "wx/list.h"
46 #include "wx/utils.h"
47 #include "wx/msgdlg.h"
48 #include "wx/log.h"
49 #endif
50 #include "wx/filefn.h"
51
52 #if wxUSE_ODBC
53
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 //#include <assert.h>
58
59 #include "wx/dbtable.h"
60
61 #ifdef __UNIX__
62 // The HPUX preprocessor lines below were commented out on 8/20/97
63 // because macros.h currently redefines DEBUG and is unneeded.
64 // # ifdef HPUX
65 // # include <macros.h>
66 // # endif
67 # ifdef LINUX
68 # include <sys/minmax.h>
69 # endif
70 #endif
71
72 ULONG lastTableID = 0;
73
74
75 #ifdef __WXDEBUG__
76 wxList TablesInUse;
77 #endif
78
79
80 /********** wxDbColDef::wxDbColDef() Constructor **********/
81 wxDbColDef::wxDbColDef()
82 {
83 Initialize();
84 } // Constructor
85
86
87 bool wxDbColDef::Initialize()
88 {
89 ColName[0] = 0;
90 DbDataType = DB_DATA_TYPE_INTEGER;
91 SqlCtype = SQL_C_LONG;
92 PtrDataObj = NULL;
93 SzDataObj = 0;
94 KeyField = false;
95 Updateable = false;
96 InsertAllowed = false;
97 DerivedCol = false;
98 CbValue = 0;
99 Null = false;
100
101 return true;
102 } // wxDbColDef::Initialize()
103
104
105 /********** wxDbTable::wxDbTable() Constructor **********/
106 wxDbTable::wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
107 const wxString &qryTblName, bool qryOnly, const wxString &tblPath)
108 {
109 if (!initialize(pwxDb, tblName, numColumns, qryTblName, qryOnly, tblPath))
110 cleanup();
111 } // wxDbTable::wxDbTable()
112
113
114 /***** DEPRECATED: use wxDbTable::wxDbTable() format above *****/
115 wxDbTable::wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
116 const wxChar *qryTblName, bool qryOnly, const wxString &tblPath)
117 {
118 wxString tempQryTblName;
119 tempQryTblName = qryTblName;
120 if (!initialize(pwxDb, tblName, numColumns, tempQryTblName, qryOnly, tblPath))
121 cleanup();
122 } // wxDbTable::wxDbTable()
123
124
125 /********** wxDbTable::~wxDbTable() **********/
126 wxDbTable::~wxDbTable()
127 {
128 this->cleanup();
129 } // wxDbTable::~wxDbTable()
130
131
132 bool wxDbTable::initialize(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
133 const wxString &qryTblName, bool qryOnly, const wxString &tblPath)
134 {
135 // Initializing member variables
136 pDb = pwxDb; // Pointer to the wxDb object
137 henv = 0;
138 hdbc = 0;
139 hstmt = 0;
140 m_hstmtGridQuery = 0;
141 hstmtDefault = 0; // Initialized below
142 hstmtCount = 0; // Initialized first time it is needed
143 hstmtInsert = 0;
144 hstmtDelete = 0;
145 hstmtUpdate = 0;
146 hstmtInternal = 0;
147 colDefs = 0;
148 tableID = 0;
149 noCols = numColumns; // Number of cols in the table
150 where.Empty(); // Where clause
151 orderBy.Empty(); // Order By clause
152 from.Empty(); // From clause
153 selectForUpdate = false; // SELECT ... FOR UPDATE; Indicates whether to include the FOR UPDATE phrase
154 queryOnly = qryOnly;
155 insertable = true;
156 tablePath.Empty();
157 tableName.Empty();
158 queryTableName.Empty();
159
160 wxASSERT(tblName.Length());
161 wxASSERT(pDb);
162
163 if (!pDb)
164 return false;
165
166 tableName = tblName; // Table Name
167 if (tblPath.Length())
168 tablePath = tblPath; // Table Path - used for dBase files
169 else
170 tablePath.Empty();
171
172 if (qryTblName.Length()) // Name of the table/view to query
173 queryTableName = qryTblName;
174 else
175 queryTableName = tblName;
176
177 pDb->incrementTableCount();
178
179 wxString s;
180 tableID = ++lastTableID;
181 s.Printf(wxT("wxDbTable constructor (%-20s) tableID:[%6lu] pDb:[%p]"), tblName.c_str(), tableID, pDb);
182
183 #ifdef __WXDEBUG__
184 wxTablesInUse *tableInUse;
185 tableInUse = new wxTablesInUse();
186 tableInUse->tableName = tblName;
187 tableInUse->tableID = tableID;
188 tableInUse->pDb = pDb;
189 TablesInUse.Append(tableInUse);
190 #endif
191
192 pDb->WriteSqlLog(s);
193
194 // Grab the HENV and HDBC from the wxDb object
195 henv = pDb->GetHENV();
196 hdbc = pDb->GetHDBC();
197
198 // Allocate space for column definitions
199 if (noCols)
200 colDefs = new wxDbColDef[noCols]; // Points to the first column definition
201
202 // Allocate statement handles for the table
203 if (!queryOnly)
204 {
205 // Allocate a separate statement handle for performing inserts
206 if (SQLAllocStmt(hdbc, &hstmtInsert) != SQL_SUCCESS)
207 pDb->DispAllErrors(henv, hdbc);
208 // Allocate a separate statement handle for performing deletes
209 if (SQLAllocStmt(hdbc, &hstmtDelete) != SQL_SUCCESS)
210 pDb->DispAllErrors(henv, hdbc);
211 // Allocate a separate statement handle for performing updates
212 if (SQLAllocStmt(hdbc, &hstmtUpdate) != SQL_SUCCESS)
213 pDb->DispAllErrors(henv, hdbc);
214 }
215 // Allocate a separate statement handle for internal use
216 if (SQLAllocStmt(hdbc, &hstmtInternal) != SQL_SUCCESS)
217 pDb->DispAllErrors(henv, hdbc);
218
219 // Set the cursor type for the statement handles
220 cursorType = SQL_CURSOR_STATIC;
221
222 if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
223 {
224 // Check to see if cursor type is supported
225 pDb->GetNextError(henv, hdbc, hstmtInternal);
226 if (! wxStrcmp(pDb->sqlState, wxT("01S02"))) // Option Value Changed
227 {
228 // Datasource does not support static cursors. Driver
229 // will substitute a cursor type. Call SQLGetStmtOption()
230 // to determine which cursor type was selected.
231 if (SQLGetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, &cursorType) != SQL_SUCCESS)
232 pDb->DispAllErrors(henv, hdbc, hstmtInternal);
233 #ifdef DBDEBUG_CONSOLE
234 cout << wxT("Static cursor changed to: ");
235 switch(cursorType)
236 {
237 case SQL_CURSOR_FORWARD_ONLY:
238 cout << wxT("Forward Only");
239 break;
240 case SQL_CURSOR_STATIC:
241 cout << wxT("Static");
242 break;
243 case SQL_CURSOR_KEYSET_DRIVEN:
244 cout << wxT("Keyset Driven");
245 break;
246 case SQL_CURSOR_DYNAMIC:
247 cout << wxT("Dynamic");
248 break;
249 }
250 cout << endl << endl;
251 #endif
252 // BJO20000425
253 if (pDb->FwdOnlyCursors() && cursorType != SQL_CURSOR_FORWARD_ONLY)
254 {
255 // Force the use of a forward only cursor...
256 cursorType = SQL_CURSOR_FORWARD_ONLY;
257 if (SQLSetStmtOption(hstmtInternal, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
258 {
259 // Should never happen
260 pDb->GetNextError(henv, hdbc, hstmtInternal);
261 return false;
262 }
263 }
264 }
265 else
266 {
267 pDb->DispNextError();
268 pDb->DispAllErrors(henv, hdbc, hstmtInternal);
269 }
270 }
271 #ifdef DBDEBUG_CONSOLE
272 else
273 cout << wxT("Cursor Type set to STATIC") << endl << endl;
274 #endif
275
276 if (!queryOnly)
277 {
278 // Set the cursor type for the INSERT statement handle
279 if (SQLSetStmtOption(hstmtInsert, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
280 pDb->DispAllErrors(henv, hdbc, hstmtInsert);
281 // Set the cursor type for the DELETE statement handle
282 if (SQLSetStmtOption(hstmtDelete, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
283 pDb->DispAllErrors(henv, hdbc, hstmtDelete);
284 // Set the cursor type for the UPDATE statement handle
285 if (SQLSetStmtOption(hstmtUpdate, SQL_CURSOR_TYPE, SQL_CURSOR_FORWARD_ONLY) != SQL_SUCCESS)
286 pDb->DispAllErrors(henv, hdbc, hstmtUpdate);
287 }
288
289 // Make the default cursor the active cursor
290 hstmtDefault = GetNewCursor(false,false);
291 wxASSERT(hstmtDefault);
292 hstmt = *hstmtDefault;
293
294 return true;
295
296 } // wxDbTable::initialize()
297
298
299 void wxDbTable::cleanup()
300 {
301 wxString s;
302 if (pDb)
303 {
304 s.Printf(wxT("wxDbTable destructor (%-20s) tableID:[%6lu] pDb:[%p]"), tableName.c_str(), tableID, pDb);
305 pDb->WriteSqlLog(s);
306 }
307
308 #ifdef __WXDEBUG__
309 if (tableID)
310 {
311 TablesInUse.DeleteContents(true);
312 bool found = false;
313
314 wxNode *pNode;
315 pNode = TablesInUse.First();
316 while (pNode && !found)
317 {
318 if (((wxTablesInUse *)pNode->Data())->tableID == tableID)
319 {
320 found = true;
321 if (!TablesInUse.DeleteNode(pNode))
322 wxLogDebug (s,wxT("Unable to delete node!"));
323 }
324 else
325 pNode = pNode->Next();
326 }
327 if (!found)
328 {
329 wxString msg;
330 msg.Printf(wxT("Unable to find the tableID in the linked\nlist of tables in use.\n\n%s"),s.c_str());
331 wxLogDebug (msg,wxT("NOTICE..."));
332 }
333 }
334 #endif
335
336 // Decrement the wxDb table count
337 if (pDb)
338 pDb->decrementTableCount();
339
340 // Delete memory allocated for column definitions
341 if (colDefs)
342 delete [] colDefs;
343
344 // Free statement handles
345 if (!queryOnly)
346 {
347 if (hstmtInsert)
348 {
349 /*
350 ODBC 3.0 says to use this form
351 if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
352 */
353 if (SQLFreeStmt(hstmtInsert, SQL_DROP) != SQL_SUCCESS)
354 pDb->DispAllErrors(henv, hdbc);
355 }
356
357 if (hstmtDelete)
358 {
359 /*
360 ODBC 3.0 says to use this form
361 if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
362 */
363 if (SQLFreeStmt(hstmtDelete, SQL_DROP) != SQL_SUCCESS)
364 pDb->DispAllErrors(henv, hdbc);
365 }
366
367 if (hstmtUpdate)
368 {
369 /*
370 ODBC 3.0 says to use this form
371 if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
372 */
373 if (SQLFreeStmt(hstmtUpdate, SQL_DROP) != SQL_SUCCESS)
374 pDb->DispAllErrors(henv, hdbc);
375 }
376 }
377
378 if (hstmtInternal)
379 {
380 if (SQLFreeStmt(hstmtInternal, SQL_DROP) != SQL_SUCCESS)
381 pDb->DispAllErrors(henv, hdbc);
382 }
383
384 // Delete dynamically allocated cursors
385 if (hstmtDefault)
386 DeleteCursor(hstmtDefault);
387
388 if (hstmtCount)
389 DeleteCursor(hstmtCount);
390
391 if (m_hstmtGridQuery)
392 DeleteCursor(m_hstmtGridQuery);
393
394 } // wxDbTable::cleanup()
395
396
397 /***************************** PRIVATE FUNCTIONS *****************************/
398
399
400 /********** wxDbTable::bindParams() **********/
401 bool wxDbTable::bindParams(bool forUpdate)
402 {
403 wxASSERT(!queryOnly);
404 if (queryOnly)
405 return(false);
406
407 SWORD fSqlType = 0;
408 UDWORD precision = 0;
409 SWORD scale = 0;
410
411 // Bind each column of the table that should be bound
412 // to a parameter marker
413 int i;
414 UWORD colNo;
415
416 for (i=0, colNo=1; i < noCols; i++)
417 {
418 if (forUpdate)
419 {
420 if (!colDefs[i].Updateable)
421 continue;
422 }
423 else
424 {
425 if (!colDefs[i].InsertAllowed)
426 continue;
427 }
428
429 switch(colDefs[i].DbDataType)
430 {
431 case DB_DATA_TYPE_VARCHAR:
432 fSqlType = pDb->GetTypeInfVarchar().FsqlType;
433 precision = colDefs[i].SzDataObj;
434 scale = 0;
435 if (colDefs[i].Null)
436 colDefs[i].CbValue = SQL_NULL_DATA;
437 else
438 colDefs[i].CbValue = SQL_NTS;
439 break;
440 case DB_DATA_TYPE_INTEGER:
441 fSqlType = pDb->GetTypeInfInteger().FsqlType;
442 precision = pDb->GetTypeInfInteger().Precision;
443 scale = 0;
444 if (colDefs[i].Null)
445 colDefs[i].CbValue = SQL_NULL_DATA;
446 else
447 colDefs[i].CbValue = 0;
448 break;
449 case DB_DATA_TYPE_FLOAT:
450 fSqlType = pDb->GetTypeInfFloat().FsqlType;
451 precision = pDb->GetTypeInfFloat().Precision;
452 scale = pDb->GetTypeInfFloat().MaximumScale;
453 // SQL Sybase Anywhere v5.5 returned a negative number for the
454 // MaxScale. This caused ODBC to kick out an error on ibscale.
455 // I check for this here and set the scale = precision.
456 //if (scale < 0)
457 // scale = (short) precision;
458 if (colDefs[i].Null)
459 colDefs[i].CbValue = SQL_NULL_DATA;
460 else
461 colDefs[i].CbValue = 0;
462 break;
463 case DB_DATA_TYPE_DATE:
464 fSqlType = pDb->GetTypeInfDate().FsqlType;
465 precision = pDb->GetTypeInfDate().Precision;
466 scale = 0;
467 if (colDefs[i].Null)
468 colDefs[i].CbValue = SQL_NULL_DATA;
469 else
470 colDefs[i].CbValue = 0;
471 break;
472 case DB_DATA_TYPE_BLOB:
473 fSqlType = pDb->GetTypeInfBlob().FsqlType;
474 precision = 50000;
475 scale = 0;
476 if (colDefs[i].Null)
477 colDefs[i].CbValue = SQL_NULL_DATA;
478 else
479 colDefs[i].CbValue = SQL_LEN_DATA_AT_EXEC(colDefs[i].SzDataObj);
480 break;
481 }
482 if (forUpdate)
483 {
484 if (SQLBindParameter(hstmtUpdate, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
485 fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj,
486 precision+1, &colDefs[i].CbValue) != SQL_SUCCESS)
487 {
488 return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
489 }
490 }
491 else
492 {
493 if (SQLBindParameter(hstmtInsert, colNo++, SQL_PARAM_INPUT, colDefs[i].SqlCtype,
494 fSqlType, precision, scale, (UCHAR*) colDefs[i].PtrDataObj,
495 precision+1,&colDefs[i].CbValue) != SQL_SUCCESS)
496 {
497 return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
498 }
499 }
500 }
501
502 // Completed successfully
503 return(true);
504
505 } // wxDbTable::bindParams()
506
507
508 /********** wxDbTable::bindInsertParams() **********/
509 bool wxDbTable::bindInsertParams(void)
510 {
511 return bindParams(false);
512 } // wxDbTable::bindInsertParams()
513
514
515 /********** wxDbTable::bindUpdateParams() **********/
516 bool wxDbTable::bindUpdateParams(void)
517 {
518 return bindParams(true);
519 } // wxDbTable::bindUpdateParams()
520
521
522 /********** wxDbTable::bindCols() **********/
523 bool wxDbTable::bindCols(HSTMT cursor)
524 {
525 // Bind each column of the table to a memory address for fetching data
526 UWORD i;
527 for (i = 0; i < noCols; i++)
528 {
529 if (SQLBindCol(cursor, (UWORD)(i+1), colDefs[i].SqlCtype, (UCHAR*) colDefs[i].PtrDataObj,
530 colDefs[i].SzDataObj, &colDefs[i].CbValue ) != SQL_SUCCESS)
531 {
532 return (pDb->DispAllErrors(henv, hdbc, cursor));
533 }
534 }
535
536 // Completed successfully
537 return(true);
538
539 } // wxDbTable::bindCols()
540
541
542 /********** wxDbTable::getRec() **********/
543 bool wxDbTable::getRec(UWORD fetchType)
544 {
545 RETCODE retcode;
546
547 if (!pDb->FwdOnlyCursors())
548 {
549 // Fetch the NEXT, PREV, FIRST or LAST record, depending on fetchType
550 UDWORD cRowsFetched;
551 UWORD rowStatus;
552
553 retcode = SQLExtendedFetch(hstmt, fetchType, 0, &cRowsFetched, &rowStatus);
554 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
555 {
556 if (retcode == SQL_NO_DATA_FOUND)
557 return(false);
558 else
559 return(pDb->DispAllErrors(henv, hdbc, hstmt));
560 }
561 else
562 {
563 // Set the Null member variable to indicate the Null state
564 // of each column just read in.
565 int i;
566 for (i = 0; i < noCols; i++)
567 colDefs[i].Null = (colDefs[i].CbValue == SQL_NULL_DATA);
568 }
569 }
570 else
571 {
572 // Fetch the next record from the record set
573 retcode = SQLFetch(hstmt);
574 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
575 {
576 if (retcode == SQL_NO_DATA_FOUND)
577 return(false);
578 else
579 return(pDb->DispAllErrors(henv, hdbc, hstmt));
580 }
581 else
582 {
583 // Set the Null member variable to indicate the Null state
584 // of each column just read in.
585 int i;
586 for (i = 0; i < noCols; i++)
587 colDefs[i].Null = (colDefs[i].CbValue == SQL_NULL_DATA);
588 }
589 }
590
591 // Completed successfully
592 return(true);
593
594 } // wxDbTable::getRec()
595
596
597 /********** wxDbTable::execDelete() **********/
598 bool wxDbTable::execDelete(const wxString &pSqlStmt)
599 {
600 RETCODE retcode;
601
602 // Execute the DELETE statement
603 retcode = SQLExecDirect(hstmtDelete, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
604
605 if (retcode == SQL_SUCCESS ||
606 retcode == SQL_NO_DATA_FOUND ||
607 retcode == SQL_SUCCESS_WITH_INFO)
608 {
609 // Record deleted successfully
610 return(true);
611 }
612
613 // Problem deleting record
614 return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
615
616 } // wxDbTable::execDelete()
617
618
619 /********** wxDbTable::execUpdate() **********/
620 bool wxDbTable::execUpdate(const wxString &pSqlStmt)
621 {
622 RETCODE retcode;
623
624 // Execute the UPDATE statement
625 retcode = SQLExecDirect(hstmtUpdate, (UCHAR FAR *) pSqlStmt.c_str(), SQL_NTS);
626
627 if (retcode == SQL_SUCCESS ||
628 retcode == SQL_NO_DATA_FOUND ||
629 retcode == SQL_SUCCESS_WITH_INFO)
630 {
631 // Record updated successfully
632 return(true);
633 }
634
635 // Problem updating record
636 return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
637
638 } // wxDbTable::execUpdate()
639
640
641 /********** wxDbTable::query() **********/
642 bool wxDbTable::query(int queryType, bool forUpdate, bool distinct, const wxString &pSqlStmt)
643 {
644 wxString sqlStmt;
645
646 if (forUpdate)
647 // The user may wish to select for update, but the DBMS may not be capable
648 selectForUpdate = CanSelectForUpdate();
649 else
650 selectForUpdate = false;
651
652 // Set the SQL SELECT string
653 if (queryType != DB_SELECT_STATEMENT) // A select statement was not passed in,
654 { // so generate a select statement.
655 BuildSelectStmt(sqlStmt, queryType, distinct);
656 pDb->WriteSqlLog(sqlStmt);
657 }
658
659 // Make sure the cursor is closed first
660 if (!CloseCursor(hstmt))
661 return(false);
662
663 // Execute the SQL SELECT statement
664 int retcode;
665 retcode = SQLExecDirect(hstmt, (UCHAR FAR *) (queryType == DB_SELECT_STATEMENT ? pSqlStmt.c_str() : sqlStmt.c_str()), SQL_NTS);
666 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
667 return(pDb->DispAllErrors(henv, hdbc, hstmt));
668
669 // Completed successfully
670 return(true);
671
672 } // wxDbTable::query()
673
674
675 /***************************** PUBLIC FUNCTIONS *****************************/
676
677
678 /********** wxDbTable::Open() **********/
679 bool wxDbTable::Open(bool checkPrivileges, bool checkTableExists)
680 {
681 if (!pDb)
682 return false;
683
684 int i;
685 wxString sqlStmt;
686 wxString s;
687 // int NumKeyCols=0;
688
689 // Calculate the maximum size of the concatenated
690 // keys for use with wxDbGrid
691 m_keysize = 0;
692 for (i=0; i < noCols; i++)
693 {
694 if (colDefs[i].KeyField)
695 {
696 // NumKeyCols++;
697 m_keysize += colDefs[i].SzDataObj;
698 }
699 }
700
701 s.Empty();
702 // Verify that the table exists in the database
703 if (checkTableExists && !pDb->TableExists(tableName, pDb->GetUsername(), tablePath))
704 {
705 s = wxT("Table/view does not exist in the database");
706 if ( *(pDb->dbInf.accessibleTables) == wxT('Y'))
707 s += wxT(", or you have no permissions.\n");
708 else
709 s += wxT(".\n");
710 }
711 else if (checkPrivileges)
712 {
713 // Verify the user has rights to access the table.
714 // Shortcut boolean evaluation to optimize out call to
715 // TablePrivileges
716 //
717 // Unfortunately this optimization doesn't seem to be
718 // reliable!
719 if (// *(pDb->dbInf.accessibleTables) == 'N' &&
720 !pDb->TablePrivileges(tableName,wxT("SELECT"), pDb->GetUsername(), pDb->GetUsername(), tablePath))
721 s = wxT("Current logged in user does not have sufficient privileges to access this table.\n");
722 }
723
724 if (!s.IsEmpty())
725 {
726 wxString p;
727
728 if (!tablePath.IsEmpty())
729 p.Printf(wxT("Error opening '%s/%s'.\n"),tablePath.c_str(),tableName.c_str());
730 else
731 p.Printf(wxT("Error opening '%s'.\n"), tableName.c_str());
732
733 p += s;
734 pDb->LogError(p.GetData());
735
736 return(false);
737 }
738
739 // Bind the member variables for field exchange between
740 // the wxDbTable object and the ODBC record.
741 if (!queryOnly)
742 {
743 if (!bindInsertParams()) // Inserts
744 return(false);
745
746 if (!bindUpdateParams()) // Updates
747 return(false);
748 }
749
750 if (!bindCols(*hstmtDefault)) // Selects
751 return(false);
752
753 if (!bindCols(hstmtInternal)) // Internal use only
754 return(false);
755
756 /*
757 * Do NOT bind the hstmtCount cursor!!!
758 */
759
760 // Build an insert statement using parameter markers
761 if (!queryOnly && noCols > 0)
762 {
763 bool needComma = false;
764 sqlStmt.Printf(wxT("INSERT INTO %s ("), tableName.c_str());
765 for (i = 0; i < noCols; i++)
766 {
767 if (! colDefs[i].InsertAllowed)
768 continue;
769 if (needComma)
770 sqlStmt += wxT(",");
771 sqlStmt += colDefs[i].ColName;
772 needComma = true;
773 }
774 needComma = false;
775 sqlStmt += wxT(") VALUES (");
776
777 int insertableCount = 0;
778
779 for (i = 0; i < noCols; i++)
780 {
781 if (! colDefs[i].InsertAllowed)
782 continue;
783 if (needComma)
784 sqlStmt += wxT(",");
785 sqlStmt += wxT("?");
786 needComma = true;
787 insertableCount++;
788 }
789 sqlStmt += wxT(")");
790
791 // Prepare the insert statement for execution
792 if (insertableCount)
793 {
794 if (SQLPrepare(hstmtInsert, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
795 return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
796 }
797 else
798 insertable= false;
799 }
800
801 // Completed successfully
802 return(true);
803
804 } // wxDbTable::Open()
805
806
807 /********** wxDbTable::Query() **********/
808 bool wxDbTable::Query(bool forUpdate, bool distinct)
809 {
810
811 return(query(DB_SELECT_WHERE, forUpdate, distinct));
812
813 } // wxDbTable::Query()
814
815
816 /********** wxDbTable::QueryBySqlStmt() **********/
817 bool wxDbTable::QueryBySqlStmt(const wxString &pSqlStmt)
818 {
819 pDb->WriteSqlLog(pSqlStmt);
820
821 return(query(DB_SELECT_STATEMENT, false, false, pSqlStmt));
822
823 } // wxDbTable::QueryBySqlStmt()
824
825
826 /********** wxDbTable::QueryMatching() **********/
827 bool wxDbTable::QueryMatching(bool forUpdate, bool distinct)
828 {
829
830 return(query(DB_SELECT_MATCHING, forUpdate, distinct));
831
832 } // wxDbTable::QueryMatching()
833
834
835 /********** wxDbTable::QueryOnKeyFields() **********/
836 bool wxDbTable::QueryOnKeyFields(bool forUpdate, bool distinct)
837 {
838
839 return(query(DB_SELECT_KEYFIELDS, forUpdate, distinct));
840
841 } // wxDbTable::QueryOnKeyFields()
842
843
844 /********** wxDbTable::GetPrev() **********/
845 bool wxDbTable::GetPrev(void)
846 {
847 if (pDb->FwdOnlyCursors())
848 {
849 wxFAIL_MSG(wxT("GetPrev()::Backward scrolling cursors are not enabled for this instance of wxDbTable"));
850 return false;
851 }
852 else
853 return(getRec(SQL_FETCH_PRIOR));
854
855 } // wxDbTable::GetPrev()
856
857
858 /********** wxDbTable::operator-- **********/
859 bool wxDbTable::operator--(int)
860 {
861 if (pDb->FwdOnlyCursors())
862 {
863 wxFAIL_MSG(wxT("operator--:Backward scrolling cursors are not enabled for this instance of wxDbTable"));
864 return false;
865 }
866 else
867 return(getRec(SQL_FETCH_PRIOR));
868
869 } // wxDbTable::operator--
870
871
872 /********** wxDbTable::GetFirst() **********/
873 bool wxDbTable::GetFirst(void)
874 {
875 if (pDb->FwdOnlyCursors())
876 {
877 wxFAIL_MSG(wxT("GetFirst():Backward scrolling cursors are not enabled for this instance of wxDbTable"));
878 return false;
879 }
880 else
881 return(getRec(SQL_FETCH_FIRST));
882
883 } // wxDbTable::GetFirst()
884
885
886 /********** wxDbTable::GetLast() **********/
887 bool wxDbTable::GetLast(void)
888 {
889 if (pDb->FwdOnlyCursors())
890 {
891 wxFAIL_MSG(wxT("GetLast()::Backward scrolling cursors are not enabled for this instance of wxDbTable"));
892 return false;
893 }
894 else
895 return(getRec(SQL_FETCH_LAST));
896
897 } // wxDbTable::GetLast()
898
899
900 /********** wxDbTable::BuildDeleteStmt() **********/
901 void wxDbTable::BuildDeleteStmt(wxString &pSqlStmt, int typeOfDel, const wxString &pWhereClause)
902 {
903 wxASSERT(!queryOnly);
904 if (queryOnly)
905 return;
906
907 wxString whereClause;
908
909 whereClause.Empty();
910
911 // Handle the case of DeleteWhere() and the where clause is blank. It should
912 // delete all records from the database in this case.
913 if (typeOfDel == DB_DEL_WHERE && (pWhereClause.Length() == 0))
914 {
915 pSqlStmt.Printf(wxT("DELETE FROM %s"), tableName.c_str());
916 return;
917 }
918
919 pSqlStmt.Printf(wxT("DELETE FROM %s WHERE "), tableName.c_str());
920
921 // Append the WHERE clause to the SQL DELETE statement
922 switch(typeOfDel)
923 {
924 case DB_DEL_KEYFIELDS:
925 // If the datasource supports the ROWID column, build
926 // the where on ROWID for efficiency purposes.
927 // e.g. DELETE FROM PARTS WHERE ROWID = '111.222.333'
928 if (CanUpdByROWID())
929 {
930 SDWORD cb;
931 wxChar rowid[wxDB_ROWID_LEN+1];
932
933 // Get the ROWID value. If not successful retreiving the ROWID,
934 // simply fall down through the code and build the WHERE clause
935 // based on the key fields.
936 if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
937 {
938 pSqlStmt += wxT("ROWID = '");
939 pSqlStmt += rowid;
940 pSqlStmt += wxT("'");
941 break;
942 }
943 }
944 // Unable to delete by ROWID, so build a WHERE
945 // clause based on the keyfields.
946 BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
947 pSqlStmt += whereClause;
948 break;
949 case DB_DEL_WHERE:
950 pSqlStmt += pWhereClause;
951 break;
952 case DB_DEL_MATCHING:
953 BuildWhereClause(whereClause, DB_WHERE_MATCHING);
954 pSqlStmt += whereClause;
955 break;
956 }
957
958 } // BuildDeleteStmt()
959
960
961 /***** DEPRECATED: use wxDbTable::BuildDeleteStmt(wxString &....) form *****/
962 void wxDbTable::BuildDeleteStmt(wxChar *pSqlStmt, int typeOfDel, const wxString &pWhereClause)
963 {
964 wxString tempSqlStmt;
965 BuildDeleteStmt(tempSqlStmt, typeOfDel, pWhereClause);
966 wxStrcpy(pSqlStmt, tempSqlStmt);
967 } // wxDbTable::BuildDeleteStmt()
968
969
970 /********** wxDbTable::BuildSelectStmt() **********/
971 void wxDbTable::BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool distinct)
972 {
973 wxString whereClause;
974 whereClause.Empty();
975
976 // Build a select statement to query the database
977 pSqlStmt = wxT("SELECT ");
978
979 // SELECT DISTINCT values only?
980 if (distinct)
981 pSqlStmt += wxT("DISTINCT ");
982
983 // Was a FROM clause specified to join tables to the base table?
984 // Available for ::Query() only!!!
985 bool appendFromClause = false;
986 #if wxODBC_BACKWARD_COMPATABILITY
987 if (typeOfSelect == DB_SELECT_WHERE && from && wxStrlen(from))
988 appendFromClause = true;
989 #else
990 if (typeOfSelect == DB_SELECT_WHERE && from.Length())
991 appendFromClause = true;
992 #endif
993
994 // Add the column list
995 int i;
996 for (i = 0; i < noCols; i++)
997 {
998 // If joining tables, the base table column names must be qualified to avoid ambiguity
999 if (appendFromClause || pDb->Dbms() == dbmsACCESS)
1000 {
1001 pSqlStmt += queryTableName;
1002 pSqlStmt += wxT(".");
1003 }
1004 pSqlStmt += colDefs[i].ColName;
1005 if (i + 1 < noCols)
1006 pSqlStmt += wxT(",");
1007 }
1008
1009 // If the datasource supports ROWID, get this column as well. Exception: Don't retrieve
1010 // the ROWID if querying distinct records. The rowid will always be unique.
1011 if (!distinct && CanUpdByROWID())
1012 {
1013 // If joining tables, the base table column names must be qualified to avoid ambiguity
1014 if (appendFromClause || pDb->Dbms() == dbmsACCESS)
1015 {
1016 pSqlStmt += wxT(",");
1017 pSqlStmt += queryTableName;
1018 pSqlStmt += wxT(".ROWID");
1019 }
1020 else
1021 pSqlStmt += wxT(",ROWID");
1022 }
1023
1024 // Append the FROM tablename portion
1025 pSqlStmt += wxT(" FROM ");
1026 pSqlStmt += queryTableName;
1027
1028 // Sybase uses the HOLDLOCK keyword to lock a record during query.
1029 // The HOLDLOCK keyword follows the table name in the from clause.
1030 // Each table in the from clause must specify HOLDLOCK or
1031 // NOHOLDLOCK (the default). Note: The "FOR UPDATE" clause
1032 // is parsed but ignored in SYBASE Transact-SQL.
1033 if (selectForUpdate && (pDb->Dbms() == dbmsSYBASE_ASA || pDb->Dbms() == dbmsSYBASE_ASE))
1034 pSqlStmt += wxT(" HOLDLOCK");
1035
1036 if (appendFromClause)
1037 pSqlStmt += from;
1038
1039 // Append the WHERE clause. Either append the where clause for the class
1040 // or build a where clause. The typeOfSelect determines this.
1041 switch(typeOfSelect)
1042 {
1043 case DB_SELECT_WHERE:
1044 #if wxODBC_BACKWARD_COMPATABILITY
1045 if (where && wxStrlen(where)) // May not want a where clause!!!
1046 #else
1047 if (where.Length()) // May not want a where clause!!!
1048 #endif
1049 {
1050 pSqlStmt += wxT(" WHERE ");
1051 pSqlStmt += where;
1052 }
1053 break;
1054 case DB_SELECT_KEYFIELDS:
1055 BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
1056 if (whereClause.Length())
1057 {
1058 pSqlStmt += wxT(" WHERE ");
1059 pSqlStmt += whereClause;
1060 }
1061 break;
1062 case DB_SELECT_MATCHING:
1063 BuildWhereClause(whereClause, DB_WHERE_MATCHING);
1064 if (whereClause.Length())
1065 {
1066 pSqlStmt += wxT(" WHERE ");
1067 pSqlStmt += whereClause;
1068 }
1069 break;
1070 }
1071
1072 // Append the ORDER BY clause
1073 #if wxODBC_BACKWARD_COMPATABILITY
1074 if (orderBy && wxStrlen(orderBy))
1075 #else
1076 if (orderBy.Length())
1077 #endif
1078 {
1079 pSqlStmt += wxT(" ORDER BY ");
1080 pSqlStmt += orderBy;
1081 }
1082
1083 // SELECT FOR UPDATE if told to do so and the datasource is capable. Sybase
1084 // parses the FOR UPDATE clause but ignores it. See the comment above on the
1085 // HOLDLOCK for Sybase.
1086 if (selectForUpdate && CanSelectForUpdate())
1087 pSqlStmt += wxT(" FOR UPDATE");
1088
1089 } // wxDbTable::BuildSelectStmt()
1090
1091
1092 /***** DEPRECATED: use wxDbTable::BuildSelectStmt(wxString &....) form *****/
1093 void wxDbTable::BuildSelectStmt(wxChar *pSqlStmt, int typeOfSelect, bool distinct)
1094 {
1095 wxString tempSqlStmt;
1096 BuildSelectStmt(tempSqlStmt, typeOfSelect, distinct);
1097 wxStrcpy(pSqlStmt, tempSqlStmt);
1098 } // wxDbTable::BuildSelectStmt()
1099
1100
1101 /********** wxDbTable::BuildUpdateStmt() **********/
1102 void wxDbTable::BuildUpdateStmt(wxString &pSqlStmt, int typeOfUpd, const wxString &pWhereClause)
1103 {
1104 wxASSERT(!queryOnly);
1105 if (queryOnly)
1106 return;
1107
1108 wxString whereClause;
1109 whereClause.Empty();
1110
1111 bool firstColumn = true;
1112
1113 pSqlStmt.Printf(wxT("UPDATE %s SET "), tableName.Upper().c_str());
1114
1115 // Append a list of columns to be updated
1116 int i;
1117 for (i = 0; i < noCols; i++)
1118 {
1119 // Only append Updateable columns
1120 if (colDefs[i].Updateable)
1121 {
1122 if (!firstColumn)
1123 pSqlStmt += wxT(",");
1124 else
1125 firstColumn = false;
1126 pSqlStmt += colDefs[i].ColName;
1127 pSqlStmt += wxT(" = ?");
1128 }
1129 }
1130
1131 // Append the WHERE clause to the SQL UPDATE statement
1132 pSqlStmt += wxT(" WHERE ");
1133 switch(typeOfUpd)
1134 {
1135 case DB_UPD_KEYFIELDS:
1136 // If the datasource supports the ROWID column, build
1137 // the where on ROWID for efficiency purposes.
1138 // e.g. UPDATE PARTS SET Col1 = ?, Col2 = ? WHERE ROWID = '111.222.333'
1139 if (CanUpdByROWID())
1140 {
1141 SDWORD cb;
1142 wxChar rowid[wxDB_ROWID_LEN+1];
1143
1144 // Get the ROWID value. If not successful retreiving the ROWID,
1145 // simply fall down through the code and build the WHERE clause
1146 // based on the key fields.
1147 if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
1148 {
1149 pSqlStmt += wxT("ROWID = '");
1150 pSqlStmt += rowid;
1151 pSqlStmt += wxT("'");
1152 break;
1153 }
1154 }
1155 // Unable to delete by ROWID, so build a WHERE
1156 // clause based on the keyfields.
1157 BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS);
1158 pSqlStmt += whereClause;
1159 break;
1160 case DB_UPD_WHERE:
1161 pSqlStmt += pWhereClause;
1162 break;
1163 }
1164 } // BuildUpdateStmt()
1165
1166
1167 /***** DEPRECATED: use wxDbTable::BuildUpdateStmt(wxString &....) form *****/
1168 void wxDbTable::BuildUpdateStmt(wxChar *pSqlStmt, int typeOfUpd, const wxString &pWhereClause)
1169 {
1170 wxString tempSqlStmt;
1171 BuildUpdateStmt(tempSqlStmt, typeOfUpd, pWhereClause);
1172 wxStrcpy(pSqlStmt, tempSqlStmt);
1173 } // BuildUpdateStmt()
1174
1175
1176 /********** wxDbTable::BuildWhereClause() **********/
1177 void wxDbTable::BuildWhereClause(wxString &pWhereClause, int typeOfWhere,
1178 const wxString &qualTableName, bool useLikeComparison)
1179 /*
1180 * Note: BuildWhereClause() currently ignores timestamp columns.
1181 * They are not included as part of the where clause.
1182 */
1183 {
1184 bool moreThanOneColumn = false;
1185 wxString colValue;
1186
1187 // Loop through the columns building a where clause as you go
1188 int i;
1189 for (i = 0; i < noCols; i++)
1190 {
1191 // Determine if this column should be included in the WHERE clause
1192 if ((typeOfWhere == DB_WHERE_KEYFIELDS && colDefs[i].KeyField) ||
1193 (typeOfWhere == DB_WHERE_MATCHING && (!IsColNull(i))))
1194 {
1195 // Skip over timestamp columns
1196 if (colDefs[i].SqlCtype == SQL_C_TIMESTAMP)
1197 continue;
1198 // If there is more than 1 column, join them with the keyword "AND"
1199 if (moreThanOneColumn)
1200 pWhereClause += wxT(" AND ");
1201 else
1202 moreThanOneColumn = true;
1203 // Concatenate where phrase for the column
1204 if (qualTableName.Length())
1205 {
1206 pWhereClause += qualTableName;
1207 pWhereClause += wxT(".");
1208 }
1209 pWhereClause += colDefs[i].ColName;
1210 if (useLikeComparison && (colDefs[i].SqlCtype == SQL_C_CHAR))
1211 pWhereClause += wxT(" LIKE ");
1212 else
1213 pWhereClause += wxT(" = ");
1214 switch(colDefs[i].SqlCtype)
1215 {
1216 case SQL_C_CHAR:
1217 colValue.Printf(wxT("'%s'"), (UCHAR FAR *) colDefs[i].PtrDataObj);
1218 break;
1219 case SQL_C_SSHORT:
1220 colValue.Printf(wxT("%hi"), *((SWORD *) colDefs[i].PtrDataObj));
1221 break;
1222 case SQL_C_USHORT:
1223 colValue.Printf(wxT("%hu"), *((UWORD *) colDefs[i].PtrDataObj));
1224 break;
1225 case SQL_C_SLONG:
1226 colValue.Printf(wxT("%li"), *((SDWORD *) colDefs[i].PtrDataObj));
1227 break;
1228 case SQL_C_ULONG:
1229 colValue.Printf(wxT("%lu"), *((UDWORD *) colDefs[i].PtrDataObj));
1230 break;
1231 case SQL_C_FLOAT:
1232 colValue.Printf(wxT("%.6f"), *((SFLOAT *) colDefs[i].PtrDataObj));
1233 break;
1234 case SQL_C_DOUBLE:
1235 colValue.Printf(wxT("%.6f"), *((SDOUBLE *) colDefs[i].PtrDataObj));
1236 break;
1237 }
1238 pWhereClause += colValue;
1239 }
1240 }
1241 } // wxDbTable::BuildWhereClause()
1242
1243
1244 /***** DEPRECATED: use wxDbTable::BuildWhereClause(wxString &....) form *****/
1245 void wxDbTable::BuildWhereClause(wxChar *pWhereClause, int typeOfWhere,
1246 const wxString &qualTableName, bool useLikeComparison)
1247 {
1248 wxString tempSqlStmt;
1249 BuildWhereClause(tempSqlStmt, typeOfWhere, qualTableName, useLikeComparison);
1250 wxStrcpy(pWhereClause, tempSqlStmt);
1251 } // wxDbTable::BuildWhereClause()
1252
1253
1254 /********** wxDbTable::GetRowNum() **********/
1255 UWORD wxDbTable::GetRowNum(void)
1256 {
1257 UDWORD rowNum;
1258
1259 if (SQLGetStmtOption(hstmt, SQL_ROW_NUMBER, (UCHAR*) &rowNum) != SQL_SUCCESS)
1260 {
1261 pDb->DispAllErrors(henv, hdbc, hstmt);
1262 return(0);
1263 }
1264
1265 // Completed successfully
1266 return((UWORD) rowNum);
1267
1268 } // wxDbTable::GetRowNum()
1269
1270
1271 /********** wxDbTable::CloseCursor() **********/
1272 bool wxDbTable::CloseCursor(HSTMT cursor)
1273 {
1274 if (SQLFreeStmt(cursor, SQL_CLOSE) != SQL_SUCCESS)
1275 return(pDb->DispAllErrors(henv, hdbc, cursor));
1276
1277 // Completed successfully
1278 return(true);
1279
1280 } // wxDbTable::CloseCursor()
1281
1282
1283 /********** wxDbTable::CreateTable() **********/
1284 bool wxDbTable::CreateTable(bool attemptDrop)
1285 {
1286 if (!pDb)
1287 return false;
1288
1289 int i, j;
1290 wxString sqlStmt;
1291
1292 #ifdef DBDEBUG_CONSOLE
1293 cout << wxT("Creating Table ") << tableName << wxT("...") << endl;
1294 #endif
1295
1296 // Drop table first
1297 if (attemptDrop && !DropTable())
1298 return false;
1299
1300 // Create the table
1301 #ifdef DBDEBUG_CONSOLE
1302 for (i = 0; i < noCols; i++)
1303 {
1304 // Exclude derived columns since they are NOT part of the base table
1305 if (colDefs[i].DerivedCol)
1306 continue;
1307 cout << i + 1 << wxT(": ") << colDefs[i].ColName << wxT("; ");
1308 switch(colDefs[i].DbDataType)
1309 {
1310 case DB_DATA_TYPE_VARCHAR:
1311 cout << pDb->GetTypeInfVarchar().TypeName << wxT("(") << colDefs[i].SzDataObj << wxT(")");
1312 break;
1313 case DB_DATA_TYPE_INTEGER:
1314 cout << pDb->GetTypeInfInteger().TypeName;
1315 break;
1316 case DB_DATA_TYPE_FLOAT:
1317 cout << pDb->GetTypeInfFloat().TypeName;
1318 break;
1319 case DB_DATA_TYPE_DATE:
1320 cout << pDb->GetTypeInfDate().TypeName;
1321 break;
1322 case DB_DATA_TYPE_BLOB:
1323 cout << pDb->GetTypeInfBlob().TypeName;
1324 break;
1325 }
1326 cout << endl;
1327 }
1328 #endif
1329
1330 // Build a CREATE TABLE string from the colDefs structure.
1331 bool needComma = false;
1332 sqlStmt.Printf(wxT("CREATE TABLE %s ("), tableName.c_str());
1333
1334 for (i = 0; i < noCols; i++)
1335 {
1336 // Exclude derived columns since they are NOT part of the base table
1337 if (colDefs[i].DerivedCol)
1338 continue;
1339 // Comma Delimiter
1340 if (needComma)
1341 sqlStmt += wxT(",");
1342 // Column Name
1343 sqlStmt += colDefs[i].ColName;
1344 sqlStmt += wxT(" ");
1345 // Column Type
1346 switch(colDefs[i].DbDataType)
1347 {
1348 case DB_DATA_TYPE_VARCHAR:
1349 sqlStmt += pDb->GetTypeInfVarchar().TypeName;
1350 break;
1351 case DB_DATA_TYPE_INTEGER:
1352 sqlStmt += pDb->GetTypeInfInteger().TypeName;
1353 break;
1354 case DB_DATA_TYPE_FLOAT:
1355 sqlStmt += pDb->GetTypeInfFloat().TypeName;
1356 break;
1357 case DB_DATA_TYPE_DATE:
1358 sqlStmt += pDb->GetTypeInfDate().TypeName;
1359 break;
1360 case DB_DATA_TYPE_BLOB:
1361 sqlStmt += pDb->GetTypeInfBlob().TypeName;
1362 break;
1363 }
1364 // For varchars, append the size of the string
1365 if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)// ||
1366 // colDefs[i].DbDataType == DB_DATA_TYPE_BLOB)
1367 {
1368 wxString s;
1369 s.Printf(wxT("(%d)"), colDefs[i].SzDataObj);
1370 sqlStmt += s;
1371 }
1372
1373 if (pDb->Dbms() == dbmsDB2 ||
1374 pDb->Dbms() == dbmsMY_SQL ||
1375 pDb->Dbms() == dbmsSYBASE_ASE ||
1376 pDb->Dbms() == dbmsINTERBASE ||
1377 pDb->Dbms() == dbmsMS_SQL_SERVER)
1378 {
1379 if (colDefs[i].KeyField)
1380 {
1381 sqlStmt += wxT(" NOT NULL");
1382 }
1383 }
1384
1385 needComma = true;
1386 }
1387 // If there is a primary key defined, include it in the create statement
1388 for (i = j = 0; i < noCols; i++)
1389 {
1390 if (colDefs[i].KeyField)
1391 {
1392 j++;
1393 break;
1394 }
1395 }
1396 if (j && pDb->Dbms() != dbmsDBASE) // Found a keyfield
1397 {
1398 switch (pDb->Dbms())
1399 {
1400 case dbmsINFORMIX:
1401 case dbmsSYBASE_ASA:
1402 case dbmsSYBASE_ASE:
1403 case dbmsMY_SQL:
1404 {
1405 // MySQL goes out on this one. We also declare the relevant key NON NULL above
1406 sqlStmt += wxT(",PRIMARY KEY (");
1407 break;
1408 }
1409 default:
1410 {
1411 sqlStmt += wxT(",CONSTRAINT ");
1412 // DB2 is limited to 18 characters for index names
1413 if (pDb->Dbms() == dbmsDB2)
1414 {
1415 wxASSERT_MSG((tableName && wxStrlen(tableName) <= 13), wxT("DB2 table/index names must be no longer than 13 characters in length.\n\nTruncating table name to 13 characters."));
1416 sqlStmt += tableName.substr(0, 13);
1417 }
1418 else
1419 sqlStmt += tableName;
1420
1421 sqlStmt += wxT("_PIDX PRIMARY KEY (");
1422 break;
1423 }
1424 }
1425
1426 // List column name(s) of column(s) comprising the primary key
1427 for (i = j = 0; i < noCols; i++)
1428 {
1429 if (colDefs[i].KeyField)
1430 {
1431 if (j++) // Multi part key, comma separate names
1432 sqlStmt += wxT(",");
1433 sqlStmt += colDefs[i].ColName;
1434 }
1435 }
1436 sqlStmt += wxT(")");
1437
1438 if (pDb->Dbms() == dbmsINFORMIX ||
1439 pDb->Dbms() == dbmsSYBASE_ASA ||
1440 pDb->Dbms() == dbmsSYBASE_ASE)
1441 {
1442 sqlStmt += wxT(" CONSTRAINT ");
1443 sqlStmt += tableName;
1444 sqlStmt += wxT("_PIDX");
1445 }
1446 }
1447 // Append the closing parentheses for the create table statement
1448 sqlStmt += wxT(")");
1449
1450 pDb->WriteSqlLog(sqlStmt);
1451
1452 #ifdef DBDEBUG_CONSOLE
1453 cout << endl << sqlStmt.c_str() << endl;
1454 #endif
1455
1456 // Execute the CREATE TABLE statement
1457 RETCODE retcode = SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
1458 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
1459 {
1460 pDb->DispAllErrors(henv, hdbc, hstmt);
1461 pDb->RollbackTrans();
1462 CloseCursor(hstmt);
1463 return(false);
1464 }
1465
1466 // Commit the transaction and close the cursor
1467 if (!pDb->CommitTrans())
1468 return(false);
1469 if (!CloseCursor(hstmt))
1470 return(false);
1471
1472 // Database table created successfully
1473 return(true);
1474
1475 } // wxDbTable::CreateTable()
1476
1477
1478 /********** wxDbTable::DropTable() **********/
1479 bool wxDbTable::DropTable()
1480 {
1481 // NOTE: This function returns true if the Table does not exist, but
1482 // only for identified databases. Code will need to be added
1483 // below for any other databases when those databases are defined
1484 // to handle this situation consistently
1485
1486 wxString sqlStmt;
1487
1488 sqlStmt.Printf(wxT("DROP TABLE %s"), tableName.c_str());
1489
1490 pDb->WriteSqlLog(sqlStmt);
1491
1492 #ifdef DBDEBUG_CONSOLE
1493 cout << endl << sqlStmt.c_str() << endl;
1494 #endif
1495
1496
1497
1498
1499 RETCODE retcode = SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS);
1500 if (retcode != SQL_SUCCESS)
1501 {
1502 // Check for "Base table not found" error and ignore
1503 pDb->GetNextError(henv, hdbc, hstmt);
1504 if (wxStrcmp(pDb->sqlState, wxT("S0002")) /*&&
1505 wxStrcmp(pDb->sqlState, wxT("S1000"))*/) // "Base table not found"
1506 {
1507 // Check for product specific error codes
1508 if (!((pDb->Dbms() == dbmsSYBASE_ASA && !wxStrcmp(pDb->sqlState,wxT("42000"))) || // 5.x (and lower?)
1509 (pDb->Dbms() == dbmsSYBASE_ASE && !wxStrcmp(pDb->sqlState,wxT("37000"))) ||
1510 (pDb->Dbms() == dbmsPERVASIVE_SQL && !wxStrcmp(pDb->sqlState,wxT("S1000"))) || // Returns an S1000 then an S0002
1511 (pDb->Dbms() == dbmsPOSTGRES && !wxStrcmp(pDb->sqlState,wxT("08S01")))))
1512 {
1513 pDb->DispNextError();
1514 pDb->DispAllErrors(henv, hdbc, hstmt);
1515 pDb->RollbackTrans();
1516 // CloseCursor(hstmt);
1517 return(false);
1518 }
1519 }
1520 }
1521
1522 // Commit the transaction and close the cursor
1523 if (! pDb->CommitTrans())
1524 return(false);
1525 if (! CloseCursor(hstmt))
1526 return(false);
1527
1528 return(true);
1529 } // wxDbTable::DropTable()
1530
1531
1532 /********** wxDbTable::CreateIndex() **********/
1533 bool wxDbTable::CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCols,
1534 wxDbIdxDef *pIdxDefs, bool attemptDrop)
1535 {
1536 wxString sqlStmt;
1537
1538 // Drop the index first
1539 if (attemptDrop && !DropIndex(idxName))
1540 return (false);
1541
1542 // MySQL (and possibly Sybase ASE?? - gt) require that any columns which are used as portions
1543 // of an index have the columns defined as "NOT NULL". During initial table creation though,
1544 // it may not be known which columns are necessarily going to be part of an index (e.g. the
1545 // table was created, then months later you determine that an additional index while
1546 // give better performance, so you want to add an index).
1547 //
1548 // The following block of code will modify the column definition to make the column be
1549 // defined with the "NOT NULL" qualifier.
1550 if (pDb->Dbms() == dbmsMY_SQL)
1551 {
1552 wxString sqlStmt;
1553 int i;
1554 bool ok = true;
1555 for (i = 0; i < noIdxCols && ok; i++)
1556 {
1557 int j = 0;
1558 bool found = false;
1559 // Find the column definition that has the ColName that matches the
1560 // index column name. We need to do this to get the DB_DATA_TYPE of
1561 // the index column, as MySQL's syntax for the ALTER column requires
1562 // this information
1563 while (!found && (j < this->noCols))
1564 {
1565 if (wxStrcmp(colDefs[j].ColName,pIdxDefs[i].ColName) == 0)
1566 found = true;
1567 if (!found)
1568 j++;
1569 }
1570
1571 if (found)
1572 {
1573 ok = pDb->ModifyColumn(tableName, pIdxDefs[i].ColName,
1574 colDefs[j].DbDataType, colDefs[j].SzDataObj,
1575 wxT("NOT NULL"));
1576
1577 if (!ok)
1578 {
1579 wxODBC_ERRORS retcode;
1580 // Oracle returns a DB_ERR_GENERAL_ERROR if the column is already
1581 // defined to be NOT NULL, but reportedly MySQL doesn't mind.
1582 // This line is just here for debug checking of the value
1583 retcode = (wxODBC_ERRORS)pDb->DB_STATUS;
1584 }
1585 }
1586 else
1587 ok = false;
1588 }
1589 if (ok)
1590 pDb->CommitTrans();
1591 else
1592 {
1593 pDb->RollbackTrans();
1594 return(false);
1595 }
1596 }
1597
1598 // Build a CREATE INDEX statement
1599 sqlStmt = wxT("CREATE ");
1600 if (unique)
1601 sqlStmt += wxT("UNIQUE ");
1602
1603 sqlStmt += wxT("INDEX ");
1604 sqlStmt += idxName;
1605 sqlStmt += wxT(" ON ");
1606 sqlStmt += tableName;
1607 sqlStmt += wxT(" (");
1608
1609 // Append list of columns making up index
1610 int i;
1611 for (i = 0; i < noIdxCols; i++)
1612 {
1613 sqlStmt += pIdxDefs[i].ColName;
1614
1615 // Postgres and SQL Server 7 do not support the ASC/DESC keywords for index columns
1616 if (!((pDb->Dbms() == dbmsMS_SQL_SERVER) && (strncmp(pDb->dbInf.dbmsVer,"07",2)==0)) &&
1617 !(pDb->Dbms() == dbmsPOSTGRES))
1618 {
1619 if (pIdxDefs[i].Ascending)
1620 sqlStmt += wxT(" ASC");
1621 else
1622 sqlStmt += wxT(" DESC");
1623 }
1624 else
1625 wxASSERT_MSG(pIdxDefs[i].Ascending, "Datasource does not support DESCending index columns");
1626
1627 if ((i + 1) < noIdxCols)
1628 sqlStmt += wxT(",");
1629 }
1630
1631 // Append closing parentheses
1632 sqlStmt += wxT(")");
1633
1634 pDb->WriteSqlLog(sqlStmt);
1635
1636 #ifdef DBDEBUG_CONSOLE
1637 cout << endl << sqlStmt.c_str() << endl << endl;
1638 #endif
1639
1640 // Execute the CREATE INDEX statement
1641 if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
1642 {
1643 pDb->DispAllErrors(henv, hdbc, hstmt);
1644 pDb->RollbackTrans();
1645 CloseCursor(hstmt);
1646 return(false);
1647 }
1648
1649 // Commit the transaction and close the cursor
1650 if (! pDb->CommitTrans())
1651 return(false);
1652 if (! CloseCursor(hstmt))
1653 return(false);
1654
1655 // Index Created Successfully
1656 return(true);
1657
1658 } // wxDbTable::CreateIndex()
1659
1660
1661 /********** wxDbTable::DropIndex() **********/
1662 bool wxDbTable::DropIndex(const wxString &idxName)
1663 {
1664 // NOTE: This function returns true if the Index does not exist, but
1665 // only for identified databases. Code will need to be added
1666 // below for any other databases when those databases are defined
1667 // to handle this situation consistently
1668
1669 wxString sqlStmt;
1670
1671 if (pDb->Dbms() == dbmsACCESS || pDb->Dbms() == dbmsMY_SQL ||
1672 pDb->Dbms() == dbmsDBASE /*|| Paradox needs this syntax too when we add support*/)
1673 sqlStmt.Printf(wxT("DROP INDEX %s ON %s"),idxName.c_str(), tableName.c_str());
1674 else if ((pDb->Dbms() == dbmsMS_SQL_SERVER) ||
1675 (pDb->Dbms() == dbmsSYBASE_ASE))
1676 sqlStmt.Printf(wxT("DROP INDEX %s.%s"),tableName.c_str(), idxName.c_str());
1677 else
1678 sqlStmt.Printf(wxT("DROP INDEX %s"),idxName.c_str());
1679
1680 pDb->WriteSqlLog(sqlStmt);
1681
1682 #ifdef DBDEBUG_CONSOLE
1683 cout << endl << sqlStmt.c_str() << endl;
1684 #endif
1685
1686 if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
1687 {
1688 // Check for "Index not found" error and ignore
1689 pDb->GetNextError(henv, hdbc, hstmt);
1690 if (wxStrcmp(pDb->sqlState,wxT("S0012"))) // "Index not found"
1691 {
1692 // Check for product specific error codes
1693 if (!((pDb->Dbms() == dbmsSYBASE_ASA && !wxStrcmp(pDb->sqlState,wxT("42000"))) || // v5.x (and lower?)
1694 (pDb->Dbms() == dbmsSYBASE_ASE && !wxStrcmp(pDb->sqlState,wxT("37000"))) ||
1695 (pDb->Dbms() == dbmsMS_SQL_SERVER && !wxStrcmp(pDb->sqlState,wxT("S1000"))) ||
1696 (pDb->Dbms() == dbmsINTERBASE && !wxStrcmp(pDb->sqlState,wxT("S1000"))) ||
1697 (pDb->Dbms() == dbmsSYBASE_ASE && !wxStrcmp(pDb->sqlState,wxT("S0002"))) || // Base table not found
1698 (pDb->Dbms() == dbmsMY_SQL && !wxStrcmp(pDb->sqlState,wxT("42S12"))) || // tested by Christopher Ludwik Marino-Cebulski using v3.23.21beta
1699 (pDb->Dbms() == dbmsPOSTGRES && !wxStrcmp(pDb->sqlState,wxT("08S01")))
1700 ))
1701 {
1702 pDb->DispNextError();
1703 pDb->DispAllErrors(henv, hdbc, hstmt);
1704 pDb->RollbackTrans();
1705 CloseCursor(hstmt);
1706 return(false);
1707 }
1708 }
1709 }
1710
1711 // Commit the transaction and close the cursor
1712 if (! pDb->CommitTrans())
1713 return(false);
1714 if (! CloseCursor(hstmt))
1715 return(false);
1716
1717 return(true);
1718 } // wxDbTable::DropIndex()
1719
1720
1721 /********** wxDbTable::SetOrderByColNums() **********/
1722 bool wxDbTable::SetOrderByColNums(UWORD first, ... )
1723 {
1724 int colNo = first; // using 'int' to be able to look for wxDB_NO_MORE_COLUN_NUMBERS
1725 va_list argptr;
1726
1727 bool abort = false;
1728 wxString tempStr;
1729
1730 va_start(argptr, first); /* Initialize variable arguments. */
1731 while (!abort && (colNo != wxDB_NO_MORE_COLUMN_NUMBERS))
1732 {
1733 // Make sure the passed in column number
1734 // is within the valid range of columns
1735 //
1736 // Valid columns are 0 thru noCols-1
1737 if (colNo >= noCols || colNo < 0)
1738 {
1739 abort = true;
1740 continue;
1741 }
1742
1743 if (colNo != first)
1744 tempStr += wxT(",");
1745
1746 tempStr += colDefs[colNo].ColName;
1747 colNo = va_arg (argptr, int);
1748 }
1749 va_end (argptr); /* Reset variable arguments. */
1750
1751 SetOrderByClause(tempStr);
1752
1753 return (!abort);
1754 } // wxDbTable::SetOrderByColNums()
1755
1756
1757 /********** wxDbTable::Insert() **********/
1758 int wxDbTable::Insert(void)
1759 {
1760 wxASSERT(!queryOnly);
1761 if (queryOnly || !insertable)
1762 return(DB_FAILURE);
1763
1764 bindInsertParams();
1765
1766 // Insert the record by executing the already prepared insert statement
1767 RETCODE retcode;
1768 retcode=SQLExecute(hstmtInsert);
1769 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
1770 {
1771 // Check to see if integrity constraint was violated
1772 pDb->GetNextError(henv, hdbc, hstmtInsert);
1773 if (! wxStrcmp(pDb->sqlState, wxT("23000"))) // Integrity constraint violated
1774 return(DB_ERR_INTEGRITY_CONSTRAINT_VIOL);
1775 else
1776 {
1777 pDb->DispNextError();
1778 pDb->DispAllErrors(henv, hdbc, hstmtInsert);
1779 return(DB_FAILURE);
1780 }
1781 }
1782
1783 // Record inserted into the datasource successfully
1784 return(DB_SUCCESS);
1785
1786 } // wxDbTable::Insert()
1787
1788
1789 /********** wxDbTable::Update() **********/
1790 bool wxDbTable::Update(void)
1791 {
1792 wxASSERT(!queryOnly);
1793 if (queryOnly)
1794 return(false);
1795
1796 wxString sqlStmt;
1797
1798 // Build the SQL UPDATE statement
1799 BuildUpdateStmt(sqlStmt, DB_UPD_KEYFIELDS);
1800
1801 pDb->WriteSqlLog(sqlStmt);
1802
1803 #ifdef DBDEBUG_CONSOLE
1804 cout << endl << sqlStmt.c_str() << endl << endl;
1805 #endif
1806
1807 // Execute the SQL UPDATE statement
1808 return(execUpdate(sqlStmt));
1809
1810 } // wxDbTable::Update()
1811
1812
1813 /********** wxDbTable::Update(pSqlStmt) **********/
1814 bool wxDbTable::Update(const wxString &pSqlStmt)
1815 {
1816 wxASSERT(!queryOnly);
1817 if (queryOnly)
1818 return(false);
1819
1820 pDb->WriteSqlLog(pSqlStmt);
1821
1822 return(execUpdate(pSqlStmt));
1823
1824 } // wxDbTable::Update(pSqlStmt)
1825
1826
1827 /********** wxDbTable::UpdateWhere() **********/
1828 bool wxDbTable::UpdateWhere(const wxString &pWhereClause)
1829 {
1830 wxASSERT(!queryOnly);
1831 if (queryOnly)
1832 return(false);
1833
1834 wxString sqlStmt;
1835
1836 // Build the SQL UPDATE statement
1837 BuildUpdateStmt(sqlStmt, DB_UPD_WHERE, pWhereClause);
1838
1839 pDb->WriteSqlLog(sqlStmt);
1840
1841 #ifdef DBDEBUG_CONSOLE
1842 cout << endl << sqlStmt.c_str() << endl << endl;
1843 #endif
1844
1845 // Execute the SQL UPDATE statement
1846 return(execUpdate(sqlStmt));
1847
1848 } // wxDbTable::UpdateWhere()
1849
1850
1851 /********** wxDbTable::Delete() **********/
1852 bool wxDbTable::Delete(void)
1853 {
1854 wxASSERT(!queryOnly);
1855 if (queryOnly)
1856 return(false);
1857
1858 wxString sqlStmt;
1859 sqlStmt.Empty();
1860
1861 // Build the SQL DELETE statement
1862 BuildDeleteStmt(sqlStmt, DB_DEL_KEYFIELDS);
1863
1864 pDb->WriteSqlLog(sqlStmt);
1865
1866 // Execute the SQL DELETE statement
1867 return(execDelete(sqlStmt));
1868
1869 } // wxDbTable::Delete()
1870
1871
1872 /********** wxDbTable::DeleteWhere() **********/
1873 bool wxDbTable::DeleteWhere(const wxString &pWhereClause)
1874 {
1875 wxASSERT(!queryOnly);
1876 if (queryOnly)
1877 return(false);
1878
1879 wxString sqlStmt;
1880 sqlStmt.Empty();
1881
1882 // Build the SQL DELETE statement
1883 BuildDeleteStmt(sqlStmt, DB_DEL_WHERE, pWhereClause);
1884
1885 pDb->WriteSqlLog(sqlStmt);
1886
1887 // Execute the SQL DELETE statement
1888 return(execDelete(sqlStmt));
1889
1890 } // wxDbTable::DeleteWhere()
1891
1892
1893 /********** wxDbTable::DeleteMatching() **********/
1894 bool wxDbTable::DeleteMatching(void)
1895 {
1896 wxASSERT(!queryOnly);
1897 if (queryOnly)
1898 return(false);
1899
1900 wxString sqlStmt;
1901 sqlStmt.Empty();
1902
1903 // Build the SQL DELETE statement
1904 BuildDeleteStmt(sqlStmt, DB_DEL_MATCHING);
1905
1906 pDb->WriteSqlLog(sqlStmt);
1907
1908 // Execute the SQL DELETE statement
1909 return(execDelete(sqlStmt));
1910
1911 } // wxDbTable::DeleteMatching()
1912
1913
1914 /********** wxDbTable::IsColNull() **********/
1915 bool wxDbTable::IsColNull(UWORD colNo) const
1916 {
1917 /*
1918 This logic is just not right. It would indicate true
1919 if a numeric field were set to a value of 0.
1920
1921 switch(colDefs[colNo].SqlCtype)
1922 {
1923 case SQL_C_CHAR:
1924 return(((UCHAR FAR *) colDefs[colNo].PtrDataObj)[0] == 0);
1925 case SQL_C_SSHORT:
1926 return(( *((SWORD *) colDefs[colNo].PtrDataObj)) == 0);
1927 case SQL_C_USHORT:
1928 return(( *((UWORD*) colDefs[colNo].PtrDataObj)) == 0);
1929 case SQL_C_SLONG:
1930 return(( *((SDWORD *) colDefs[colNo].PtrDataObj)) == 0);
1931 case SQL_C_ULONG:
1932 return(( *((UDWORD *) colDefs[colNo].PtrDataObj)) == 0);
1933 case SQL_C_FLOAT:
1934 return(( *((SFLOAT *) colDefs[colNo].PtrDataObj)) == 0);
1935 case SQL_C_DOUBLE:
1936 return((*((SDOUBLE *) colDefs[colNo].PtrDataObj)) == 0);
1937 case SQL_C_TIMESTAMP:
1938 TIMESTAMP_STRUCT *pDt;
1939 pDt = (TIMESTAMP_STRUCT *) colDefs[colNo].PtrDataObj;
1940 if (pDt->year == 0 && pDt->month == 0 && pDt->day == 0)
1941 return(true);
1942 else
1943 return(false);
1944 default:
1945 return(true);
1946 }
1947 */
1948 return (colDefs[colNo].Null);
1949 } // wxDbTable::IsColNull()
1950
1951
1952 /********** wxDbTable::CanSelectForUpdate() **********/
1953 bool wxDbTable::CanSelectForUpdate(void)
1954 {
1955 if (queryOnly)
1956 return false;
1957
1958 if (pDb->Dbms() == dbmsMY_SQL)
1959 return false;
1960
1961 if ((pDb->Dbms() == dbmsORACLE) ||
1962 (pDb->dbInf.posStmts & SQL_PS_SELECT_FOR_UPDATE))
1963 return(true);
1964 else
1965 return(false);
1966
1967 } // wxDbTable::CanSelectForUpdate()
1968
1969
1970 /********** wxDbTable::CanUpdByROWID() **********/
1971 bool wxDbTable::CanUpdByROWID(void)
1972 {
1973 /*
1974 * NOTE: Returning false for now until this can be debugged,
1975 * as the ROWID is not getting updated correctly
1976 */
1977 return false;
1978 /*
1979 if (pDb->Dbms() == dbmsORACLE)
1980 return(true);
1981 else
1982 return(false);
1983 */
1984 } // wxDbTable::CanUpdByROWID()
1985
1986
1987 /********** wxDbTable::IsCursorClosedOnCommit() **********/
1988 bool wxDbTable::IsCursorClosedOnCommit(void)
1989 {
1990 if (pDb->dbInf.cursorCommitBehavior == SQL_CB_PRESERVE)
1991 return(false);
1992 else
1993 return(true);
1994
1995 } // wxDbTable::IsCursorClosedOnCommit()
1996
1997
1998
1999 /********** wxDbTable::ClearMemberVar() **********/
2000 void wxDbTable::ClearMemberVar(UWORD colNo, bool setToNull)
2001 {
2002 wxASSERT(colNo < noCols);
2003
2004 switch(colDefs[colNo].SqlCtype)
2005 {
2006 case SQL_C_CHAR:
2007 ((UCHAR FAR *) colDefs[colNo].PtrDataObj)[0] = 0;
2008 break;
2009 case SQL_C_SSHORT:
2010 *((SWORD *) colDefs[colNo].PtrDataObj) = 0;
2011 break;
2012 case SQL_C_USHORT:
2013 *((UWORD*) colDefs[colNo].PtrDataObj) = 0;
2014 break;
2015 case SQL_C_SLONG:
2016 *((SDWORD *) colDefs[colNo].PtrDataObj) = 0;
2017 break;
2018 case SQL_C_ULONG:
2019 *((UDWORD *) colDefs[colNo].PtrDataObj) = 0;
2020 break;
2021 case SQL_C_FLOAT:
2022 *((SFLOAT *) colDefs[colNo].PtrDataObj) = 0.0f;
2023 break;
2024 case SQL_C_DOUBLE:
2025 *((SDOUBLE *) colDefs[colNo].PtrDataObj) = 0.0f;
2026 break;
2027 case SQL_C_TIMESTAMP:
2028 TIMESTAMP_STRUCT *pDt;
2029 pDt = (TIMESTAMP_STRUCT *) colDefs[colNo].PtrDataObj;
2030 pDt->year = 0;
2031 pDt->month = 0;
2032 pDt->day = 0;
2033 pDt->hour = 0;
2034 pDt->minute = 0;
2035 pDt->second = 0;
2036 pDt->fraction = 0;
2037 break;
2038 }
2039
2040 if (setToNull)
2041 SetColNull(colNo);
2042 } // wxDbTable::ClearMemberVar()
2043
2044
2045 /********** wxDbTable::ClearMemberVars() **********/
2046 void wxDbTable::ClearMemberVars(bool setToNull)
2047 {
2048 int i;
2049
2050 // Loop through the columns setting each member variable to zero
2051 for (i=0; i < noCols; i++)
2052 ClearMemberVar(i,setToNull);
2053
2054 } // wxDbTable::ClearMemberVars()
2055
2056
2057 /********** wxDbTable::SetQueryTimeout() **********/
2058 bool wxDbTable::SetQueryTimeout(UDWORD nSeconds)
2059 {
2060 if (SQLSetStmtOption(hstmtInsert, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
2061 return(pDb->DispAllErrors(henv, hdbc, hstmtInsert));
2062 if (SQLSetStmtOption(hstmtUpdate, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
2063 return(pDb->DispAllErrors(henv, hdbc, hstmtUpdate));
2064 if (SQLSetStmtOption(hstmtDelete, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
2065 return(pDb->DispAllErrors(henv, hdbc, hstmtDelete));
2066 if (SQLSetStmtOption(hstmtInternal, SQL_QUERY_TIMEOUT, nSeconds) != SQL_SUCCESS)
2067 return(pDb->DispAllErrors(henv, hdbc, hstmtInternal));
2068
2069 // Completed Successfully
2070 return(true);
2071
2072 } // wxDbTable::SetQueryTimeout()
2073
2074
2075 /********** wxDbTable::SetColDefs() **********/
2076 void wxDbTable::SetColDefs(UWORD index, const wxString &fieldName, int dataType, void *pData,
2077 SWORD cType, int size, bool keyField, bool upd,
2078 bool insAllow, bool derivedCol)
2079 {
2080 if (!colDefs) // May happen if the database connection fails
2081 return;
2082
2083 if (fieldName.Length() > (unsigned int) DB_MAX_COLUMN_NAME_LEN)
2084 {
2085 int assertColumnNameTooLong = 0;
2086 wxStrncpy(colDefs[index].ColName, fieldName, DB_MAX_COLUMN_NAME_LEN);
2087 colDefs[index].ColName[DB_MAX_COLUMN_NAME_LEN] = 0;
2088 wxString tmpMsg;
2089 tmpMsg.Printf("Column name '%s' is too long. Truncated to '%s'.",fieldName.c_str(),colDefs[index].ColName);
2090 wxASSERT_MSG(assertColumnNameTooLong,tmpMsg.c_str());
2091 }
2092 else
2093 wxStrcpy(colDefs[index].ColName, fieldName);
2094
2095 colDefs[index].DbDataType = dataType;
2096 colDefs[index].PtrDataObj = pData;
2097 colDefs[index].SqlCtype = cType;
2098 colDefs[index].SzDataObj = size;
2099 colDefs[index].KeyField = keyField;
2100 colDefs[index].DerivedCol = derivedCol;
2101 // Derived columns by definition would NOT be "Insertable" or "Updateable"
2102 if (derivedCol)
2103 {
2104 colDefs[index].Updateable = false;
2105 colDefs[index].InsertAllowed = false;
2106 }
2107 else
2108 {
2109 colDefs[index].Updateable = upd;
2110 colDefs[index].InsertAllowed = insAllow;
2111 }
2112
2113 colDefs[index].Null = false;
2114
2115 } // wxDbTable::SetColDefs()
2116
2117
2118 /********** wxDbTable::SetColDefs() **********/
2119 wxDbColDataPtr* wxDbTable::SetColDefs(wxDbColInf *pColInfs, UWORD numCols)
2120 {
2121 wxASSERT(pColInfs);
2122 wxDbColDataPtr *pColDataPtrs = NULL;
2123
2124 if (pColInfs)
2125 {
2126 UWORD index;
2127
2128 pColDataPtrs = new wxDbColDataPtr[numCols+1];
2129
2130 for (index = 0; index < numCols; index++)
2131 {
2132 // Process the fields
2133 switch (pColInfs[index].dbDataType)
2134 {
2135 case DB_DATA_TYPE_VARCHAR:
2136 pColDataPtrs[index].PtrDataObj = new wxChar[pColInfs[index].bufferLength+1];
2137 pColDataPtrs[index].SzDataObj = pColInfs[index].columnSize;
2138 pColDataPtrs[index].SqlCtype = SQL_C_CHAR;
2139 break;
2140 case DB_DATA_TYPE_INTEGER:
2141 // Can be long or short
2142 if (pColInfs[index].bufferLength == sizeof(long))
2143 {
2144 pColDataPtrs[index].PtrDataObj = new long;
2145 pColDataPtrs[index].SzDataObj = sizeof(long);
2146 pColDataPtrs[index].SqlCtype = SQL_C_SLONG;
2147 }
2148 else
2149 {
2150 pColDataPtrs[index].PtrDataObj = new short;
2151 pColDataPtrs[index].SzDataObj = sizeof(short);
2152 pColDataPtrs[index].SqlCtype = SQL_C_SSHORT;
2153 }
2154 break;
2155 case DB_DATA_TYPE_FLOAT:
2156 // Can be float or double
2157 if (pColInfs[index].bufferLength == sizeof(float))
2158 {
2159 pColDataPtrs[index].PtrDataObj = new float;
2160 pColDataPtrs[index].SzDataObj = sizeof(float);
2161 pColDataPtrs[index].SqlCtype = SQL_C_FLOAT;
2162 }
2163 else
2164 {
2165 pColDataPtrs[index].PtrDataObj = new double;
2166 pColDataPtrs[index].SzDataObj = sizeof(double);
2167 pColDataPtrs[index].SqlCtype = SQL_C_DOUBLE;
2168 }
2169 break;
2170 case DB_DATA_TYPE_DATE:
2171 pColDataPtrs[index].PtrDataObj = new TIMESTAMP_STRUCT;
2172 pColDataPtrs[index].SzDataObj = sizeof(TIMESTAMP_STRUCT);
2173 pColDataPtrs[index].SqlCtype = SQL_C_TIMESTAMP;
2174 break;
2175 case DB_DATA_TYPE_BLOB:
2176 int notSupportedYet = 0;
2177 wxASSERT_MSG(notSupportedYet, wxT("This form of ::SetColDefs() cannot be used with BLOB columns"));
2178 pColDataPtrs[index].PtrDataObj = /*BLOB ADDITION NEEDED*/NULL;
2179 pColDataPtrs[index].SzDataObj = /*BLOB ADDITION NEEDED*/sizeof(void *);
2180 pColDataPtrs[index].SqlCtype = SQL_VARBINARY;
2181 break;
2182 }
2183 if (pColDataPtrs[index].PtrDataObj != NULL)
2184 SetColDefs (index,pColInfs[index].colName,pColInfs[index].dbDataType, pColDataPtrs[index].PtrDataObj, pColDataPtrs[index].SqlCtype, pColDataPtrs[index].SzDataObj);
2185 else
2186 {
2187 // Unable to build all the column definitions, as either one of
2188 // the calls to "new" failed above, or there was a BLOB field
2189 // to have a column definition for. If BLOBs are to be used,
2190 // the other form of ::SetColDefs() must be used, as it is impossible
2191 // to know the maximum size to create the PtrDataObj to be.
2192 delete [] pColDataPtrs;
2193 return NULL;
2194 }
2195 }
2196 }
2197
2198 return (pColDataPtrs);
2199
2200 } // wxDbTable::SetColDefs()
2201
2202
2203 /********** wxDbTable::SetCursor() **********/
2204 void wxDbTable::SetCursor(HSTMT *hstmtActivate)
2205 {
2206 if (hstmtActivate == wxDB_DEFAULT_CURSOR)
2207 hstmt = *hstmtDefault;
2208 else
2209 hstmt = *hstmtActivate;
2210
2211 } // wxDbTable::SetCursor()
2212
2213
2214 /********** wxDbTable::Count(const wxString &) **********/
2215 ULONG wxDbTable::Count(const wxString &args)
2216 {
2217 ULONG count;
2218 wxString sqlStmt;
2219 SDWORD cb;
2220
2221 // Build a "SELECT COUNT(*) FROM queryTableName [WHERE whereClause]" SQL Statement
2222 sqlStmt = wxT("SELECT COUNT(");
2223 sqlStmt += args;
2224 sqlStmt += wxT(") FROM ");
2225 sqlStmt += queryTableName;
2226 #if wxODBC_BACKWARD_COMPATABILITY
2227 if (from && wxStrlen(from))
2228 #else
2229 if (from.Length())
2230 #endif
2231 sqlStmt += from;
2232
2233 // Add the where clause if one is provided
2234 #if wxODBC_BACKWARD_COMPATABILITY
2235 if (where && wxStrlen(where))
2236 #else
2237 if (where.Length())
2238 #endif
2239 {
2240 sqlStmt += wxT(" WHERE ");
2241 sqlStmt += where;
2242 }
2243
2244 pDb->WriteSqlLog(sqlStmt);
2245
2246 // Initialize the Count cursor if it's not already initialized
2247 if (!hstmtCount)
2248 {
2249 hstmtCount = GetNewCursor(false,false);
2250 wxASSERT(hstmtCount);
2251 if (!hstmtCount)
2252 return(0);
2253 }
2254
2255 // Execute the SQL statement
2256 if (SQLExecDirect(*hstmtCount, (UCHAR FAR *) sqlStmt.c_str(), SQL_NTS) != SQL_SUCCESS)
2257 {
2258 pDb->DispAllErrors(henv, hdbc, *hstmtCount);
2259 return(0);
2260 }
2261
2262 // Fetch the record
2263 if (SQLFetch(*hstmtCount) != SQL_SUCCESS)
2264 {
2265 pDb->DispAllErrors(henv, hdbc, *hstmtCount);
2266 return(0);
2267 }
2268
2269 // Obtain the result
2270 if (SQLGetData(*hstmtCount, (UWORD)1, SQL_C_ULONG, &count, sizeof(count), &cb) != SQL_SUCCESS)
2271 {
2272 pDb->DispAllErrors(henv, hdbc, *hstmtCount);
2273 return(0);
2274 }
2275
2276 // Free the cursor
2277 if (SQLFreeStmt(*hstmtCount, SQL_CLOSE) != SQL_SUCCESS)
2278 pDb->DispAllErrors(henv, hdbc, *hstmtCount);
2279
2280 // Return the record count
2281 return(count);
2282
2283 } // wxDbTable::Count()
2284
2285
2286 /********** wxDbTable::Refresh() **********/
2287 bool wxDbTable::Refresh(void)
2288 {
2289 bool result = true;
2290
2291 // Switch to the internal cursor so any active cursors are not corrupted
2292 HSTMT currCursor = GetCursor();
2293 hstmt = hstmtInternal;
2294 #if wxODBC_BACKWARD_COMPATABILITY
2295 // Save the where and order by clauses
2296 char *saveWhere = where;
2297 char *saveOrderBy = orderBy;
2298 #else
2299 wxString saveWhere = where;
2300 wxString saveOrderBy = orderBy;
2301 #endif
2302 // Build a where clause to refetch the record with. Try and use the
2303 // ROWID if it's available, ow use the key fields.
2304 wxString whereClause;
2305 whereClause.Empty();
2306
2307 if (CanUpdByROWID())
2308 {
2309 SDWORD cb;
2310 wxChar rowid[wxDB_ROWID_LEN+1];
2311
2312 // Get the ROWID value. If not successful retreiving the ROWID,
2313 // simply fall down through the code and build the WHERE clause
2314 // based on the key fields.
2315 if (SQLGetData(hstmt, (UWORD)(noCols+1), SQL_C_CHAR, (UCHAR*) rowid, wxDB_ROWID_LEN, &cb) == SQL_SUCCESS)
2316 {
2317 whereClause += queryTableName;
2318 whereClause += wxT(".ROWID = '");
2319 whereClause += rowid;
2320 whereClause += wxT("'");
2321 }
2322 }
2323
2324 // If unable to use the ROWID, build a where clause from the keyfields
2325 if (wxStrlen(whereClause) == 0)
2326 BuildWhereClause(whereClause, DB_WHERE_KEYFIELDS, queryTableName);
2327
2328 // Requery the record
2329 where = whereClause;
2330 orderBy.Empty();
2331 if (!Query())
2332 result = false;
2333
2334 if (result && !GetNext())
2335 result = false;
2336
2337 // Switch back to original cursor
2338 SetCursor(&currCursor);
2339
2340 // Free the internal cursor
2341 if (SQLFreeStmt(hstmtInternal, SQL_CLOSE) != SQL_SUCCESS)
2342 pDb->DispAllErrors(henv, hdbc, hstmtInternal);
2343
2344 // Restore the original where and order by clauses
2345 where = saveWhere;
2346 orderBy = saveOrderBy;
2347
2348 return(result);
2349
2350 } // wxDbTable::Refresh()
2351
2352
2353 /********** wxDbTable::SetColNull() **********/
2354 bool wxDbTable::SetColNull(UWORD colNo, bool set)
2355 {
2356 if (colNo < noCols)
2357 {
2358 colDefs[colNo].Null = set;
2359 if (set) // Blank out the values in the member variable
2360 ClearMemberVar(colNo,false); // Must call with false, or infinite recursion will happen
2361 return(true);
2362 }
2363 else
2364 return(false);
2365
2366 } // wxDbTable::SetColNull()
2367
2368
2369 /********** wxDbTable::SetColNull() **********/
2370 bool wxDbTable::SetColNull(const wxString &colName, bool set)
2371 {
2372 int i;
2373 for (i = 0; i < noCols; i++)
2374 {
2375 if (!wxStricmp(colName, colDefs[i].ColName))
2376 break;
2377 }
2378
2379 if (i < noCols)
2380 {
2381 colDefs[i].Null = set;
2382 if (set) // Blank out the values in the member variable
2383 ClearMemberVar(i,false); // Must call with false, or infinite recursion will happen
2384 return(true);
2385 }
2386 else
2387 return(false);
2388
2389 } // wxDbTable::SetColNull()
2390
2391
2392 /********** wxDbTable::GetNewCursor() **********/
2393 HSTMT *wxDbTable::GetNewCursor(bool setCursor, bool bindColumns)
2394 {
2395 HSTMT *newHSTMT = new HSTMT;
2396 wxASSERT(newHSTMT);
2397 if (!newHSTMT)
2398 return(0);
2399
2400 if (SQLAllocStmt(hdbc, newHSTMT) != SQL_SUCCESS)
2401 {
2402 pDb->DispAllErrors(henv, hdbc);
2403 delete newHSTMT;
2404 return(0);
2405 }
2406
2407 if (SQLSetStmtOption(*newHSTMT, SQL_CURSOR_TYPE, cursorType) != SQL_SUCCESS)
2408 {
2409 pDb->DispAllErrors(henv, hdbc, *newHSTMT);
2410 delete newHSTMT;
2411 return(0);
2412 }
2413
2414 if (bindColumns)
2415 {
2416 if (!bindCols(*newHSTMT))
2417 {
2418 delete newHSTMT;
2419 return(0);
2420 }
2421 }
2422
2423 if (setCursor)
2424 SetCursor(newHSTMT);
2425
2426 return(newHSTMT);
2427
2428 } // wxDbTable::GetNewCursor()
2429
2430
2431 /********** wxDbTable::DeleteCursor() **********/
2432 bool wxDbTable::DeleteCursor(HSTMT *hstmtDel)
2433 {
2434 bool result = true;
2435
2436 if (!hstmtDel) // Cursor already deleted
2437 return(result);
2438
2439 /*
2440 ODBC 3.0 says to use this form
2441 if (SQLFreeHandle(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
2442
2443 */
2444 if (SQLFreeStmt(*hstmtDel, SQL_DROP) != SQL_SUCCESS)
2445 {
2446 pDb->DispAllErrors(henv, hdbc);
2447 result = false;
2448 }
2449
2450 delete hstmtDel;
2451
2452 return(result);
2453
2454 } // wxDbTable::DeleteCursor()
2455
2456 //////////////////////////////////////////////////////////////
2457 // wxDbGrid support functions
2458 //////////////////////////////////////////////////////////////
2459
2460 void wxDbTable::SetRowMode(const rowmode_t rowmode)
2461 {
2462 if (!m_hstmtGridQuery)
2463 {
2464 m_hstmtGridQuery = GetNewCursor(false,false);
2465 if (!bindCols(*m_hstmtGridQuery))
2466 return;
2467 }
2468
2469 m_rowmode = rowmode;
2470 switch (m_rowmode)
2471 {
2472 case WX_ROW_MODE_QUERY:
2473 SetCursor(m_hstmtGridQuery);
2474 break;
2475 case WX_ROW_MODE_INDIVIDUAL:
2476 SetCursor(hstmtDefault);
2477 break;
2478 default:
2479 assert(0);
2480 }
2481 } // wxDbTable::SetRowMode()
2482
2483
2484 wxVariant wxDbTable::GetCol(const int col) const
2485 {
2486 wxVariant val;
2487 if ((col < noCols) && (!IsColNull(col)))
2488 {
2489 switch (colDefs[col].SqlCtype)
2490 {
2491 case SQL_CHAR:
2492 case SQL_VARCHAR:
2493 val = (char *)(colDefs[col].PtrDataObj);
2494 break;
2495 case SQL_C_LONG:
2496 case SQL_C_SLONG:
2497 val = *(long *)(colDefs[col].PtrDataObj);
2498 break;
2499 case SQL_C_SHORT:
2500 case SQL_C_SSHORT:
2501 val = (long int )(*(short *)(colDefs[col].PtrDataObj));
2502 break;
2503 case SQL_C_ULONG:
2504 val = (long)(*(unsigned long *)(colDefs[col].PtrDataObj));
2505 break;
2506 case SQL_C_TINYINT:
2507 val = (long)(*(char *)(colDefs[col].PtrDataObj));
2508 break;
2509 case SQL_C_UTINYINT:
2510 val = (long)(*(unsigned char *)(colDefs[col].PtrDataObj));
2511 break;
2512 case SQL_C_USHORT:
2513 val = (long)(*(UWORD *)(colDefs[col].PtrDataObj));
2514 break;
2515 case SQL_C_DATE:
2516 val = (DATE_STRUCT *)(colDefs[col].PtrDataObj);
2517 break;
2518 case SQL_C_TIME:
2519 val = (TIME_STRUCT *)(colDefs[col].PtrDataObj);
2520 break;
2521 case SQL_C_TIMESTAMP:
2522 val = (TIMESTAMP_STRUCT *)(colDefs[col].PtrDataObj);
2523 break;
2524 case SQL_C_DOUBLE:
2525 val = *(double *)(colDefs[col].PtrDataObj);
2526 break;
2527 default:
2528 assert(0);
2529 }
2530 }
2531 return val;
2532 } // wxDbTable::GetCol()
2533
2534
2535 void csstrncpyt(char *s, const char *t, int n)
2536 {
2537 while ((*s++ = *t++) && --n)
2538 {};
2539
2540 *s = '\0';
2541 }
2542
2543 void wxDbTable::SetCol(const int col, const wxVariant val)
2544 {
2545 //FIXME: Add proper wxDateTime support to wxVariant..
2546 wxDateTime dateval;
2547
2548 SetColNull(col, val.IsNull());
2549
2550 if (!val.IsNull())
2551 {
2552 if ((colDefs[col].SqlCtype == SQL_C_DATE)
2553 || (colDefs[col].SqlCtype == SQL_C_TIME)
2554 || (colDefs[col].SqlCtype == SQL_C_TIMESTAMP))
2555 {
2556 //Returns null if invalid!
2557 if (!dateval.ParseDate(val.GetString()))
2558 SetColNull(col,true);
2559 }
2560
2561 switch (colDefs[col].SqlCtype)
2562 {
2563 case SQL_CHAR:
2564 case SQL_VARCHAR:
2565 csstrncpyt((char *)(colDefs[col].PtrDataObj),
2566 val.GetString().c_str(),
2567 colDefs[col].SzDataObj-1);
2568 break;
2569 case SQL_C_LONG:
2570 case SQL_C_SLONG:
2571 *(long *)(colDefs[col].PtrDataObj) = val;
2572 break;
2573 case SQL_C_SHORT:
2574 case SQL_C_SSHORT:
2575 *(short *)(colDefs[col].PtrDataObj) = val.GetLong();
2576 break;
2577 case SQL_C_ULONG:
2578 *(unsigned long *)(colDefs[col].PtrDataObj) = val.GetLong();
2579 break;
2580 case SQL_C_TINYINT:
2581 *(char *)(colDefs[col].PtrDataObj) = val.GetChar();
2582 break;
2583 case SQL_C_UTINYINT:
2584 *(unsigned char *)(colDefs[col].PtrDataObj) = val.GetChar();
2585 break;
2586 case SQL_C_USHORT:
2587 *(unsigned short *)(colDefs[col].PtrDataObj) = val.GetLong();
2588 break;
2589 //FIXME: Add proper wxDateTime support to wxVariant..
2590 case SQL_C_DATE:
2591 {
2592 DATE_STRUCT *dataptr =
2593 (DATE_STRUCT *)colDefs[col].PtrDataObj;
2594
2595 dataptr->year = dateval.GetYear();
2596 dataptr->month = dateval.GetMonth()+1;
2597 dataptr->day = dateval.GetDay();
2598 }
2599 break;
2600 case SQL_C_TIME:
2601 {
2602 TIME_STRUCT *dataptr =
2603 (TIME_STRUCT *)colDefs[col].PtrDataObj;
2604
2605 dataptr->hour = dateval.GetHour();
2606 dataptr->minute = dateval.GetMinute();
2607 dataptr->second = dateval.GetSecond();
2608 }
2609 break;
2610 case SQL_C_TIMESTAMP:
2611 {
2612 TIMESTAMP_STRUCT *dataptr =
2613 (TIMESTAMP_STRUCT *)colDefs[col].PtrDataObj;
2614 dataptr->year = dateval.GetYear();
2615 dataptr->month = dateval.GetMonth()+1;
2616 dataptr->day = dateval.GetDay();
2617
2618 dataptr->hour = dateval.GetHour();
2619 dataptr->minute = dateval.GetMinute();
2620 dataptr->second = dateval.GetSecond();
2621 }
2622 break;
2623 case SQL_C_DOUBLE:
2624 *(double *)(colDefs[col].PtrDataObj) = val;
2625 break;
2626 default:
2627 assert(0);
2628 } // switch
2629 } // if (!val.IsNull())
2630 } // wxDbTable::SetCol()
2631
2632
2633 GenericKey wxDbTable::GetKey()
2634 {
2635 void *blk;
2636 char *blkptr;
2637
2638 blk = malloc(m_keysize);
2639 blkptr = (char *) blk;
2640
2641 int i;
2642 for (i=0; i < noCols; i++)
2643 {
2644 if (colDefs[i].KeyField)
2645 {
2646 memcpy(blkptr,colDefs[i].PtrDataObj, colDefs[i].SzDataObj);
2647 blkptr += colDefs[i].SzDataObj;
2648 }
2649 }
2650
2651 GenericKey k = GenericKey(blk, m_keysize);
2652 free(blk);
2653
2654 return k;
2655 } // wxDbTable::GetKey()
2656
2657
2658 void wxDbTable::SetKey(const GenericKey& k)
2659 {
2660 void *blk;
2661 char *blkptr;
2662
2663 blk = k.GetBlk();
2664 blkptr = (char *)blk;
2665
2666 int i;
2667 for (i=0; i < noCols; i++)
2668 {
2669 if (colDefs[i].KeyField)
2670 {
2671 SetColNull(i, false);
2672 memcpy(colDefs[i].PtrDataObj, blkptr, colDefs[i].SzDataObj);
2673 blkptr += colDefs[i].SzDataObj;
2674 }
2675 }
2676 } // wxDbTable::SetKey()
2677
2678
2679 #endif // wxUSE_ODBC
2680
wxWidgets (Impactor)