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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: db.cpp
3 // Purpose: Implementation of the wxDB class. The wxDB class represents a connection
4 // to an ODBC data source. The wxDB class allows operations on the data
5 // source such as opening and closing the data source.
6 // Author: Doug Card
7 // Modified by:
8 // Mods: Dec, 1998:
9 // -Added support for SQL statement logging and database cataloging
10 // Mods: April, 1999
11 // -Added QUERY_ONLY mode support to reduce default number of cursors
12 // -Added additional SQL logging code
13 // -Added DEBUG-ONLY tracking of wxTable objects to detect orphaned DB connections
14 // -Set ODBC option to only read committed writes to the DB so all
15 // databases operate the same in that respect
16 // Created: 9.96
17 // RCS-ID: $Id$
18 // Copyright: (c) 1996 Remstar International, Inc.
19 // Licence: wxWindows licence, plus:
20 // Notice: This class library and its intellectual design are free of charge for use,
21 // modification, enhancement, debugging under the following conditions:
22 // 1) These classes may only be used as part of the implementation of a
23 // wxWindows-based application
24 // 2) All enhancements and bug fixes are to be submitted back to the wxWindows
25 // user groups free of all charges for use with the wxWindows library.
26 // 3) These classes may not be distributed as part of any other class library,
27 // DLL, text (written or electronic), other than a complete distribution of
28 // the wxWindows GUI development toolkit.
29 ///////////////////////////////////////////////////////////////////////////////
30
31 /*
32 // SYNOPSIS START
33 // SYNOPSIS STOP
34 */
35
36 // Use this line for wxWindows v1.x
37 //#include "wx_ver.h"
38 // Use this line for wxWindows v2.x
39 #include "wx/version.h"
40 #include "wx/wxprec.h"
41
42 #if wxMAJOR_VERSION == 2
43 #ifdef __GNUG__
44 #pragma implementation "db.h"
45 #endif
46 #endif
47
48 #ifdef DBDEBUG_CONSOLE
49 #include <iostream.h>
50 #endif
51
52 #ifdef __BORLANDC__
53 #pragma hdrstop
54 #endif //__BORLANDC__
55
56 #if wxMAJOR_VERSION == 2
57 #ifndef WX_PRECOMP
58 #include "wx/string.h"
59 #endif //WX_PRECOMP
60 #endif
61
62 #if wxMAJOR_VERSION == 1
63 # if defined(wx_msw) || defined(wx_x)
64 # ifdef WX_PRECOMP
65 # include "wx_prec.h"
66 # else
67 # include "wx.h"
68 # endif
69 # endif
70 # define wxUSE_ODBC 1
71 #endif
72
73 #if wxUSE_ODBC
74
75 #include <stdio.h>
76 #include <string.h>
77 #include <assert.h>
78 #include <stdlib.h>
79 #include <ctype.h>
80 #if wxMAJOR_VERSION == 1
81 #include "db.h"
82 #elif wxMAJOR_VERSION == 2
83 #include "wx/db.h"
84 #endif
85
86 DbList* WXDLLEXPORT PtrBegDbList = 0;
87
88 #if __WXDEBUG__ > 0
89 #if wxMAJOR_VERSION == 2
90 #include "wx/object.h"
91 #include "wx/list.h"
92 #include "wx/utils.h"
93 #include "wx/msgdlg.h"
94 #endif
95 extern wxList TablesInUse;
96 #endif
97
98 // SQL Log defaults to be used by GetDbConnection
99 enum sqlLog SQLLOGstate = sqlLogOFF;
100
101 char SQLLOGfn[DB_PATH_MAX+1] = "sqllog.txt";
102
103 // The wxDB::errorList is copied to this variable when the wxDB object
104 // is closed. This way, the error list is still available after the
105 // database object is closed. This is necessary if the database
106 // connection fails so the calling application can show the operator
107 // why the connection failed. Note: as each wxDB object is closed, it
108 // will overwrite the errors of the previously destroyed wxDB object in
109 // this variable.
110 char DBerrorList[DB_MAX_ERROR_HISTORY][DB_MAX_ERROR_MSG_LEN];
111
112 /********** wxDB Constructor **********/
113 wxDB::wxDB(HENV &aHenv)
114 {
115 int i;
116
117 fpSqlLog = 0; // Sql Log file pointer
118 sqlLogState = sqlLogOFF; // By default, logging is turned off
119 nTables = 0;
120
121 strcpy(sqlState,"");
122 strcpy(errorMsg,"");
123 nativeError = cbErrorMsg = 0;
124 for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
125 strcpy(errorList[i], "");
126
127 // Init typeInf structures
128 strcpy(typeInfVarchar.TypeName,"");
129 typeInfVarchar.FsqlType = 0;
130 typeInfVarchar.Precision = 0;
131 typeInfVarchar.CaseSensitive = 0;
132 typeInfVarchar.MaximumScale = 0;
133
134 strcpy(typeInfInteger.TypeName,"");
135 typeInfInteger.FsqlType = 0;
136 typeInfInteger.Precision = 0;
137 typeInfInteger.CaseSensitive = 0;
138 typeInfInteger.MaximumScale = 0;
139
140 strcpy(typeInfFloat.TypeName,"");
141 typeInfFloat.FsqlType = 0;
142 typeInfFloat.Precision = 0;
143 typeInfFloat.CaseSensitive = 0;
144 typeInfFloat.MaximumScale = 0;
145
146 strcpy(typeInfDate.TypeName,"");
147 typeInfDate.FsqlType = 0;
148 typeInfDate.Precision = 0;
149 typeInfDate.CaseSensitive = 0;
150 typeInfDate.MaximumScale = 0;
151
152 // Error reporting is turned OFF by default
153 silent = TRUE;
154
155 // Copy the HENV into the db class
156 henv = aHenv;
157
158 // Allocate a data source connection handle
159 if (SQLAllocConnect(henv, &hdbc) != SQL_SUCCESS)
160 DispAllErrors(henv);
161
162 // Initialize the db status flag
163 DB_STATUS = 0;
164
165 // Mark database as not open as of yet
166 dbIsOpen = FALSE;
167
168 } // wxDB::wxDB()
169
170 /********** wxDB::Open() **********/
171 bool wxDB::Open(char *Dsn, char *Uid, char *AuthStr)
172 {
173 assert(Dsn && strlen(Dsn));
174 dsn = Dsn;
175 uid = Uid;
176 authStr = AuthStr;
177
178 RETCODE retcode;
179
180 #ifndef FWD_ONLY_CURSORS
181
182 // Specify that the ODBC cursor library be used, if needed. This must be
183 // specified before the connection is made.
184 retcode = SQLSetConnectOption(hdbc, SQL_ODBC_CURSORS, SQL_CUR_USE_IF_NEEDED);
185
186 #ifdef DBDEBUG_CONSOLE
187 if (retcode == SQL_SUCCESS)
188 cout << "SQLSetConnectOption(CURSOR_LIB) successful" << endl;
189 else
190 cout << "SQLSetConnectOption(CURSOR_LIB) failed" << endl;
191 #endif
192
193 #endif
194
195 // Connect to the data source
196 retcode = SQLConnect(hdbc, (UCHAR FAR *) Dsn, SQL_NTS,
197 (UCHAR FAR *) Uid, SQL_NTS,
198 (UCHAR FAR *) AuthStr,SQL_NTS);
199 if (retcode == SQL_SUCCESS_WITH_INFO)
200 DispAllErrors(henv, hdbc);
201 else if (retcode != SQL_SUCCESS)
202 return(DispAllErrors(henv, hdbc));
203
204 /*
205 If using Intersolv branded ODBC drivers, this is the place where you would substitute
206 your branded driver license information
207
208 SQLSetConnectOption(hdbc, 1041, (UDWORD) "");
209 SQLSetConnectOption(hdbc, 1042, (UDWORD) "");
210 */
211 // Mark database as open
212 dbIsOpen = TRUE;
213
214 // Allocate a statement handle for the database connection
215 if (SQLAllocStmt(hdbc, &hstmt) != SQL_SUCCESS)
216 return(DispAllErrors(henv, hdbc));
217
218 // Set Connection Options
219 if (! setConnectionOptions())
220 return(FALSE);
221
222 // Query the data source for inf. about itself
223 if (! getDbInfo())
224 return(FALSE);
225
226 // Query the data source regarding data type information
227
228 //
229 // The way I determined which SQL data types to use was by calling SQLGetInfo
230 // for all of the possible SQL data types to see which ones were supported. If
231 // a type is not supported, the SQLFetch() that's called from getDataTypeInfo()
232 // fails with SQL_NO_DATA_FOUND. This is ugly because I'm sure the three SQL data
233 // types I've selected below will not alway's be what we want. These are just
234 // what happened to work against an Oracle 7/Intersolv combination. The following is
235 // a complete list of the results I got back against the Oracle 7 database:
236 //
237 // SQL_BIGINT SQL_NO_DATA_FOUND
238 // SQL_BINARY SQL_NO_DATA_FOUND
239 // SQL_BIT SQL_NO_DATA_FOUND
240 // SQL_CHAR type name = 'CHAR', Precision = 255
241 // SQL_DATE SQL_NO_DATA_FOUND
242 // SQL_DECIMAL type name = 'NUMBER', Precision = 38
243 // SQL_DOUBLE type name = 'NUMBER', Precision = 15
244 // SQL_FLOAT SQL_NO_DATA_FOUND
245 // SQL_INTEGER SQL_NO_DATA_FOUND
246 // SQL_LONGVARBINARY type name = 'LONG RAW', Precision = 2 billion
247 // SQL_LONGVARCHAR type name = 'LONG', Precision = 2 billion
248 // SQL_NUMERIC SQL_NO_DATA_FOUND
249 // SQL_REAL SQL_NO_DATA_FOUND
250 // SQL_SMALLINT SQL_NO_DATA_FOUND
251 // SQL_TIME SQL_NO_DATA_FOUND
252 // SQL_TIMESTAMP type name = 'DATE', Precision = 19
253 // SQL_VARBINARY type name = 'RAW', Precision = 255
254 // SQL_VARCHAR type name = 'VARCHAR2', Precision = 2000
255 // =====================================================================
256 // Results from a Microsoft Access 7.0 db, using a driver from Microsoft
257 //
258 // SQL_VARCHAR type name = 'TEXT', Precision = 255
259 // SQL_TIMESTAMP type name = 'DATETIME'
260 // SQL_DECIMAL SQL_NO_DATA_FOUND
261 // SQL_NUMERIC type name = 'CURRENCY', Precision = 19
262 // SQL_FLOAT SQL_NO_DATA_FOUND
263 // SQL_REAL type name = 'SINGLE', Precision = 7
264 // SQL_DOUBLE type name = 'DOUBLE', Precision = 15
265 // SQL_INTEGER type name = 'LONG', Precision = 10
266
267 // VARCHAR = Variable length character string
268 if (! getDataTypeInfo(SQL_VARCHAR, typeInfVarchar))
269 if (! getDataTypeInfo(SQL_CHAR, typeInfVarchar))
270 return(FALSE);
271 else
272 typeInfVarchar.FsqlType = SQL_CHAR;
273 else
274 typeInfVarchar.FsqlType = SQL_VARCHAR;
275
276 // Float
277 if (! getDataTypeInfo(SQL_DOUBLE, typeInfFloat))
278 if (! getDataTypeInfo(SQL_REAL, typeInfFloat))
279 if (! getDataTypeInfo(SQL_FLOAT, typeInfFloat))
280 if (! getDataTypeInfo(SQL_DECIMAL, typeInfFloat))
281 if (! getDataTypeInfo(SQL_NUMERIC, typeInfFloat))
282 return(FALSE);
283 else
284 typeInfFloat.FsqlType = SQL_NUMERIC;
285 else
286 typeInfFloat.FsqlType = SQL_DECIMAL;
287 else
288 typeInfFloat.FsqlType = SQL_FLOAT;
289 else
290 typeInfFloat.FsqlType = SQL_REAL;
291 else
292 typeInfFloat.FsqlType = SQL_DOUBLE;
293
294 // Integer
295 if (! getDataTypeInfo(SQL_INTEGER, typeInfInteger))
296 // If SQL_INTEGER is not supported, use the floating point
297 // data type to store integers as well as floats
298 if (! getDataTypeInfo(typeInfFloat.FsqlType, typeInfInteger))
299 return(FALSE);
300 else
301 typeInfInteger.FsqlType = typeInfFloat.FsqlType;
302 else
303 typeInfInteger.FsqlType = SQL_INTEGER;
304
305 // Date/Time
306 if (Dbms() != dbmsDBASE)
307 {
308 if (! getDataTypeInfo(SQL_TIMESTAMP, typeInfDate))
309 return(FALSE);
310 else
311 typeInfDate.FsqlType = SQL_TIMESTAMP;
312 }
313 else
314 {
315 if (! getDataTypeInfo(SQL_DATE, typeInfDate))
316 return(FALSE);
317 else
318 typeInfDate.FsqlType = SQL_DATE;
319 }
320
321 #ifdef DBDEBUG_CONSOLE
322 cout << "VARCHAR DATA TYPE: " << typeInfVarchar.TypeName << endl;
323 cout << "INTEGER DATA TYPE: " << typeInfInteger.TypeName << endl;
324 cout << "FLOAT DATA TYPE: " << typeInfFloat.TypeName << endl;
325 cout << "DATE DATA TYPE: " << typeInfDate.TypeName << endl;
326 cout << endl;
327 #endif
328
329 // Completed Successfully
330 return(TRUE);
331
332 } // wxDB::Open()
333
334 // The Intersolv/Oracle 7 driver was "Not Capable" of setting the login timeout.
335
336 /********** wxDB::setConnectionOptions() **********/
337 bool wxDB::setConnectionOptions(void)
338 {
339 SQLSetConnectOption(hdbc, SQL_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF);
340 SQLSetConnectOption(hdbc, SQL_OPT_TRACE, SQL_OPT_TRACE_OFF);
341
342 // Display the connection options to verify them
343 #ifdef DBDEBUG_CONSOLE
344 long l;
345 cout << ">>>>> CONNECTION OPTIONS <<<<<<" << endl;
346
347 if (SQLGetConnectOption(hdbc, SQL_AUTOCOMMIT, &l) != SQL_SUCCESS)
348 return(DispAllErrors(henv, hdbc));
349 cout << "AUTOCOMMIT: " << (l == SQL_AUTOCOMMIT_OFF ? "OFF" : "ON") << endl;
350
351 if (SQLGetConnectOption(hdbc, SQL_ODBC_CURSORS, &l) != SQL_SUCCESS)
352 return(DispAllErrors(henv, hdbc));
353 cout << "ODBC CURSORS: ";
354 switch(l)
355 {
356 case(SQL_CUR_USE_IF_NEEDED):
357 cout << "SQL_CUR_USE_IF_NEEDED";
358 break;
359 case(SQL_CUR_USE_ODBC):
360 cout << "SQL_CUR_USE_ODBC";
361 break;
362 case(SQL_CUR_USE_DRIVER):
363 cout << "SQL_CUR_USE_DRIVER";
364 break;
365 }
366 cout << endl;
367
368 if (SQLGetConnectOption(hdbc, SQL_OPT_TRACE, &l) != SQL_SUCCESS)
369 return(DispAllErrors(henv, hdbc));
370 cout << "TRACING: " << (l == SQL_OPT_TRACE_OFF ? "OFF" : "ON") << endl;
371
372 cout << endl;
373 #endif
374
375 // Completed Successfully
376 return(TRUE);
377
378 } // wxDB::setConnectionOptions()
379
380 /********** wxDB::getDbInfo() **********/
381 bool wxDB::getDbInfo(void)
382 {
383 SWORD cb;
384 RETCODE retcode;
385
386 if (SQLGetInfo(hdbc, SQL_SERVER_NAME, (UCHAR*) dbInf.serverName, 80, &cb) != SQL_SUCCESS)
387 return(DispAllErrors(henv, hdbc));
388
389 if (SQLGetInfo(hdbc, SQL_DATABASE_NAME, (UCHAR*) dbInf.databaseName, 128, &cb) != SQL_SUCCESS)
390 return(DispAllErrors(henv, hdbc));
391
392 if (SQLGetInfo(hdbc, SQL_DBMS_NAME, (UCHAR*) dbInf.dbmsName, 40, &cb) != SQL_SUCCESS)
393 return(DispAllErrors(henv, hdbc));
394
395 // 16-Mar-1999
396 // After upgrading to MSVC6, the original 20 char buffer below was insufficient,
397 // causing database connectivity to fail in some cases.
398 retcode = SQLGetInfo(hdbc, SQL_DBMS_VER, (UCHAR*) dbInf.dbmsVer, 64, &cb);
399 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO )
400 return(DispAllErrors(henv, hdbc));
401
402 if (SQLGetInfo(hdbc, SQL_ACTIVE_CONNECTIONS, (UCHAR*) &dbInf.maxConnections, sizeof(dbInf.maxConnections), &cb) != SQL_SUCCESS)
403 return(DispAllErrors(henv, hdbc));
404
405 if (SQLGetInfo(hdbc, SQL_ACTIVE_STATEMENTS, (UCHAR*) &dbInf.maxStmts, sizeof(dbInf.maxStmts), &cb) != SQL_SUCCESS)
406 return(DispAllErrors(henv, hdbc));
407
408 if (SQLGetInfo(hdbc, SQL_DRIVER_NAME, (UCHAR*) dbInf.driverName, 40, &cb) != SQL_SUCCESS)
409 return(DispAllErrors(henv, hdbc));
410
411 if (SQLGetInfo(hdbc, SQL_DRIVER_ODBC_VER, (UCHAR*) dbInf.odbcVer, 60, &cb) == SQL_ERROR)
412 return(DispAllErrors(henv, hdbc));
413
414 retcode = SQLGetInfo(hdbc, SQL_ODBC_VER, (UCHAR*) dbInf.drvMgrOdbcVer, 60, &cb);
415 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
416 return(DispAllErrors(henv, hdbc));
417
418 if (SQLGetInfo(hdbc, SQL_DRIVER_VER, (UCHAR*) dbInf.driverVer, 60, &cb) == SQL_ERROR)
419 return(DispAllErrors(henv, hdbc));
420
421 if (SQLGetInfo(hdbc, SQL_ODBC_API_CONFORMANCE, (UCHAR*) &dbInf.apiConfLvl, sizeof(dbInf.apiConfLvl), &cb) != SQL_SUCCESS)
422 return(DispAllErrors(henv, hdbc));
423
424 if (SQLGetInfo(hdbc, SQL_ODBC_SAG_CLI_CONFORMANCE, (UCHAR*) &dbInf.cliConfLvl, sizeof(dbInf.cliConfLvl), &cb) != SQL_SUCCESS)
425 return(DispAllErrors(henv, hdbc));
426
427 if (SQLGetInfo(hdbc, SQL_ODBC_SQL_CONFORMANCE, (UCHAR*) &dbInf.sqlConfLvl, sizeof(dbInf.sqlConfLvl), &cb) != SQL_SUCCESS)
428 return(DispAllErrors(henv, hdbc));
429
430 if (SQLGetInfo(hdbc, SQL_OUTER_JOINS, (UCHAR*) dbInf.outerJoins, 2, &cb) != SQL_SUCCESS)
431 return(DispAllErrors(henv, hdbc));
432
433 if (SQLGetInfo(hdbc, SQL_PROCEDURES, (UCHAR*) dbInf.procedureSupport, 2, &cb) != SQL_SUCCESS)
434 return(DispAllErrors(henv, hdbc));
435
436 if (SQLGetInfo(hdbc, SQL_CURSOR_COMMIT_BEHAVIOR, (UCHAR*) &dbInf.cursorCommitBehavior, sizeof(dbInf.cursorCommitBehavior), &cb) != SQL_SUCCESS)
437 return(DispAllErrors(henv, hdbc));
438
439 if (SQLGetInfo(hdbc, SQL_CURSOR_ROLLBACK_BEHAVIOR, (UCHAR*) &dbInf.cursorRollbackBehavior, sizeof(dbInf.cursorRollbackBehavior), &cb) != SQL_SUCCESS)
440 return(DispAllErrors(henv, hdbc));
441
442 if (SQLGetInfo(hdbc, SQL_NON_NULLABLE_COLUMNS, (UCHAR*) &dbInf.supportNotNullClause, sizeof(dbInf.supportNotNullClause), &cb) != SQL_SUCCESS)
443 return(DispAllErrors(henv, hdbc));
444
445 if (SQLGetInfo(hdbc, SQL_ODBC_SQL_OPT_IEF, (UCHAR*) dbInf.supportIEF, 2, &cb) != SQL_SUCCESS)
446 return(DispAllErrors(henv, hdbc));
447
448 if (SQLGetInfo(hdbc, SQL_DEFAULT_TXN_ISOLATION, (UCHAR*) &dbInf.txnIsolation, sizeof(dbInf.txnIsolation), &cb) != SQL_SUCCESS)
449 return(DispAllErrors(henv, hdbc));
450
451 if (SQLGetInfo(hdbc, SQL_TXN_ISOLATION_OPTION, (UCHAR*) &dbInf.txnIsolationOptions, sizeof(dbInf.txnIsolationOptions), &cb) != SQL_SUCCESS)
452 return(DispAllErrors(henv, hdbc));
453
454 if (SQLGetInfo(hdbc, SQL_FETCH_DIRECTION, (UCHAR*) &dbInf.fetchDirections, sizeof(dbInf.fetchDirections), &cb) != SQL_SUCCESS)
455 return(DispAllErrors(henv, hdbc));
456
457 if (SQLGetInfo(hdbc, SQL_LOCK_TYPES, (UCHAR*) &dbInf.lockTypes, sizeof(dbInf.lockTypes), &cb) != SQL_SUCCESS)
458 return(DispAllErrors(henv, hdbc));
459
460 if (SQLGetInfo(hdbc, SQL_POS_OPERATIONS, (UCHAR*) &dbInf.posOperations, sizeof(dbInf.posOperations), &cb) != SQL_SUCCESS)
461 return(DispAllErrors(henv, hdbc));
462
463 if (SQLGetInfo(hdbc, SQL_POSITIONED_STATEMENTS, (UCHAR*) &dbInf.posStmts, sizeof(dbInf.posStmts), &cb) != SQL_SUCCESS)
464 return(DispAllErrors(henv, hdbc));
465
466 if (SQLGetInfo(hdbc, SQL_SCROLL_CONCURRENCY, (UCHAR*) &dbInf.scrollConcurrency, sizeof(dbInf.scrollConcurrency), &cb) != SQL_SUCCESS)
467 return(DispAllErrors(henv, hdbc));
468
469 if (SQLGetInfo(hdbc, SQL_SCROLL_OPTIONS, (UCHAR*) &dbInf.scrollOptions, sizeof(dbInf.scrollOptions), &cb) != SQL_SUCCESS)
470 return(DispAllErrors(henv, hdbc));
471
472 if (SQLGetInfo(hdbc, SQL_STATIC_SENSITIVITY, (UCHAR*) &dbInf.staticSensitivity, sizeof(dbInf.staticSensitivity), &cb) != SQL_SUCCESS)
473 return(DispAllErrors(henv, hdbc));
474
475 if (SQLGetInfo(hdbc, SQL_TXN_CAPABLE, (UCHAR*) &dbInf.txnCapable, sizeof(dbInf.txnCapable), &cb) != SQL_SUCCESS)
476 return(DispAllErrors(henv, hdbc));
477
478 if (SQLGetInfo(hdbc, SQL_LOGIN_TIMEOUT, (UCHAR*) &dbInf.loginTimeout, sizeof(dbInf.loginTimeout), &cb) != SQL_SUCCESS)
479 return(DispAllErrors(henv, hdbc));
480
481 #ifdef DBDEBUG_CONSOLE
482 cout << ">>>>> DATA SOURCE INFORMATION <<<<<" << endl;
483 cout << "SERVER Name: " << dbInf.serverName << endl;
484 cout << "DBMS Name: " << dbInf.dbmsName << "; DBMS Version: " << dbInf.dbmsVer << endl;
485 cout << "ODBC Version: " << dbInf.odbcVer << "; Driver Version: " << dbInf.driverVer << endl;
486
487 cout << "API Conf. Level: ";
488 switch(dbInf.apiConfLvl)
489 {
490 case SQL_OAC_NONE: cout << "None"; break;
491 case SQL_OAC_LEVEL1: cout << "Level 1"; break;
492 case SQL_OAC_LEVEL2: cout << "Level 2"; break;
493 }
494 cout << endl;
495
496 cout << "SAG CLI Conf. Level: ";
497 switch(dbInf.cliConfLvl)
498 {
499 case SQL_OSCC_NOT_COMPLIANT: cout << "Not Compliant"; break;
500 case SQL_OSCC_COMPLIANT: cout << "Compliant"; break;
501 }
502 cout << endl;
503
504 cout << "SQL Conf. Level: ";
505 switch(dbInf.sqlConfLvl)
506 {
507 case SQL_OSC_MINIMUM: cout << "Minimum Grammer"; break;
508 case SQL_OSC_CORE: cout << "Core Grammer"; break;
509 case SQL_OSC_EXTENDED: cout << "Extended Grammer"; break;
510 }
511 cout << endl;
512
513 cout << "Max. Connections: " << dbInf.maxConnections << endl;
514 cout << "Outer Joins: " << dbInf.outerJoins << endl;
515 cout << "Support for Procedures: " << dbInf.procedureSupport << endl;
516
517 cout << "Cursor COMMIT Behavior: ";
518 switch(dbInf.cursorCommitBehavior)
519 {
520 case SQL_CB_DELETE: cout << "Delete cursors"; break;
521 case SQL_CB_CLOSE: cout << "Close cursors"; break;
522 case SQL_CB_PRESERVE: cout << "Preserve cursors"; break;
523 }
524 cout << endl;
525
526 cout << "Cursor ROLLBACK Behavior: ";
527 switch(dbInf.cursorRollbackBehavior)
528 {
529 case SQL_CB_DELETE: cout << "Delete cursors"; break;
530 case SQL_CB_CLOSE: cout << "Close cursors"; break;
531 case SQL_CB_PRESERVE: cout << "Preserve cursors"; break;
532 }
533 cout << endl;
534
535 cout << "Support NOT NULL clause: ";
536 switch(dbInf.supportNotNullClause)
537 {
538 case SQL_NNC_NULL: cout << "No"; break;
539 case SQL_NNC_NON_NULL: cout << "Yes"; break;
540 }
541 cout << endl;
542
543 cout << "Support IEF (Ref. Integrity): " << dbInf.supportIEF << endl;
544 cout << "Login Timeout: " << dbInf.loginTimeout << endl;
545
546 cout << endl << endl << "more ..." << endl;
547 getchar();
548
549 cout << "Default Transaction Isolation: ";
550 switch(dbInf.txnIsolation)
551 {
552 case SQL_TXN_READ_UNCOMMITTED: cout << "Read Uncommitted"; break;
553 case SQL_TXN_READ_COMMITTED: cout << "Read Committed"; break;
554 case SQL_TXN_REPEATABLE_READ: cout << "Repeatable Read"; break;
555 case SQL_TXN_SERIALIZABLE: cout << "Serializable"; break;
556 #ifdef ODBC_V20
557 case SQL_TXN_VERSIONING: cout << "Versioning"; break;
558 #endif
559 }
560 cout << endl;
561
562 cout << "Transaction Isolation Options: ";
563 if (dbInf.txnIsolationOptions & SQL_TXN_READ_UNCOMMITTED)
564 cout << "Read Uncommitted, ";
565 if (dbInf.txnIsolationOptions & SQL_TXN_READ_COMMITTED)
566 cout << "Read Committed, ";
567 if (dbInf.txnIsolationOptions & SQL_TXN_REPEATABLE_READ)
568 cout << "Repeatable Read, ";
569 if (dbInf.txnIsolationOptions & SQL_TXN_SERIALIZABLE)
570 cout << "Serializable, ";
571 #ifdef ODBC_V20
572 if (dbInf.txnIsolationOptions & SQL_TXN_VERSIONING)
573 cout << "Versioning";
574 #endif
575 cout << endl;
576
577 cout << "Fetch Directions Supported:" << endl << " ";
578 if (dbInf.fetchDirections & SQL_FD_FETCH_NEXT)
579 cout << "Next, ";
580 if (dbInf.fetchDirections & SQL_FD_FETCH_PRIOR)
581 cout << "Prev, ";
582 if (dbInf.fetchDirections & SQL_FD_FETCH_FIRST)
583 cout << "First, ";
584 if (dbInf.fetchDirections & SQL_FD_FETCH_LAST)
585 cout << "Last, ";
586 if (dbInf.fetchDirections & SQL_FD_FETCH_ABSOLUTE)
587 cout << "Absolute, ";
588 if (dbInf.fetchDirections & SQL_FD_FETCH_RELATIVE)
589 cout << "Relative, ";
590 #ifdef ODBC_V20
591 if (dbInf.fetchDirections & SQL_FD_FETCH_RESUME)
592 cout << "Resume, ";
593 #endif
594 if (dbInf.fetchDirections & SQL_FD_FETCH_BOOKMARK)
595 cout << "Bookmark";
596 cout << endl;
597
598 cout << "Lock Types Supported (SQLSetPos): ";
599 if (dbInf.lockTypes & SQL_LCK_NO_CHANGE)
600 cout << "No Change, ";
601 if (dbInf.lockTypes & SQL_LCK_EXCLUSIVE)
602 cout << "Exclusive, ";
603 if (dbInf.lockTypes & SQL_LCK_UNLOCK)
604 cout << "UnLock";
605 cout << endl;
606
607 cout << "Position Operations Supported (SQLSetPos): ";
608 if (dbInf.posOperations & SQL_POS_POSITION)
609 cout << "Position, ";
610 if (dbInf.posOperations & SQL_POS_REFRESH)
611 cout << "Refresh, ";
612 if (dbInf.posOperations & SQL_POS_UPDATE)
613 cout << "Upd, ";
614 if (dbInf.posOperations & SQL_POS_DELETE)
615 cout << "Del, ";
616 if (dbInf.posOperations & SQL_POS_ADD)
617 cout << "Add";
618 cout << endl;
619
620 cout << "Positioned Statements Supported: ";
621 if (dbInf.posStmts & SQL_PS_POSITIONED_DELETE)
622 cout << "Pos delete, ";
623 if (dbInf.posStmts & SQL_PS_POSITIONED_UPDATE)
624 cout << "Pos update, ";
625 if (dbInf.posStmts & SQL_PS_SELECT_FOR_UPDATE)
626 cout << "Select for update";
627 cout << endl;
628
629 cout << "Scroll Concurrency: ";
630 if (dbInf.scrollConcurrency & SQL_SCCO_READ_ONLY)
631 cout << "Read Only, ";
632 if (dbInf.scrollConcurrency & SQL_SCCO_LOCK)
633 cout << "Lock, ";
634 if (dbInf.scrollConcurrency & SQL_SCCO_OPT_ROWVER)
635 cout << "Opt. Rowver, ";
636 if (dbInf.scrollConcurrency & SQL_SCCO_OPT_VALUES)
637 cout << "Opt. Values";
638 cout << endl;
639
640 cout << "Scroll Options: ";
641 if (dbInf.scrollOptions & SQL_SO_FORWARD_ONLY)
642 cout << "Fwd Only, ";
643 if (dbInf.scrollOptions & SQL_SO_STATIC)
644 cout << "Static, ";
645 if (dbInf.scrollOptions & SQL_SO_KEYSET_DRIVEN)
646 cout << "Keyset Driven, ";
647 if (dbInf.scrollOptions & SQL_SO_DYNAMIC)
648 cout << "Dynamic, ";
649 if (dbInf.scrollOptions & SQL_SO_MIXED)
650 cout << "Mixed";
651 cout << endl;
652
653 cout << "Static Sensitivity: ";
654 if (dbInf.staticSensitivity & SQL_SS_ADDITIONS)
655 cout << "Additions, ";
656 if (dbInf.staticSensitivity & SQL_SS_DELETIONS)
657 cout << "Deletions, ";
658 if (dbInf.staticSensitivity & SQL_SS_UPDATES)
659 cout << "Updates";
660 cout << endl;
661
662 cout << "Transaction Capable?: ";
663 switch(dbInf.txnCapable)
664 {
665 case SQL_TC_NONE: cout << "No"; break;
666 case SQL_TC_DML: cout << "DML Only"; break;
667 case SQL_TC_DDL_COMMIT: cout << "DDL Commit"; break;
668 case SQL_TC_DDL_IGNORE: cout << "DDL Ignore"; break;
669 case SQL_TC_ALL: cout << "DDL & DML"; break;
670 }
671 cout << endl;
672
673 cout << endl;
674
675 #endif
676
677 // Completed Successfully
678 return(TRUE);
679
680 } // wxDB::getDbInfo()
681
682 /********** wxDB::getDataTypeInfo() **********/
683 bool wxDB::getDataTypeInfo(SWORD fSqlType, SqlTypeInfo &structSQLTypeInfo)
684 {
685 // fSqlType will be something like SQL_VARCHAR. This parameter determines
686 // the data type inf. is gathered for.
687 //
688 // SqlTypeInfo is a structure that is filled in with data type information,
689
690 RETCODE retcode;
691 SDWORD cbRet;
692
693 // Get information about the data type specified
694 if (SQLGetTypeInfo(hstmt, fSqlType) != SQL_SUCCESS)
695 return(DispAllErrors(henv, hdbc, hstmt));
696 // Fetch the record
697 if ((retcode = SQLFetch(hstmt)) != SQL_SUCCESS)
698 {
699 #ifdef DBDEBUG_CONSOLE
700 if (retcode == SQL_NO_DATA_FOUND)
701 cout << "SQL_NO_DATA_FOUND fetching inf. about data type." << endl;
702 #endif
703 DispAllErrors(henv, hdbc, hstmt);
704 SQLFreeStmt(hstmt, SQL_CLOSE);
705 return(FALSE);
706 }
707 // Obtain columns from the record
708 if (SQLGetData(hstmt, 1, SQL_C_CHAR, (UCHAR*) structSQLTypeInfo.TypeName, DB_TYPE_NAME_LEN, &cbRet) != SQL_SUCCESS)
709 return(DispAllErrors(henv, hdbc, hstmt));
710 if (SQLGetData(hstmt, 3, SQL_C_LONG, (UCHAR*) &structSQLTypeInfo.Precision, 0, &cbRet) != SQL_SUCCESS)
711 return(DispAllErrors(henv, hdbc, hstmt));
712 if (SQLGetData(hstmt, 8, SQL_C_SHORT, (UCHAR*) &structSQLTypeInfo.CaseSensitive, 0, &cbRet) != SQL_SUCCESS)
713 return(DispAllErrors(henv, hdbc, hstmt));
714 // if (SQLGetData(hstmt, 14, SQL_C_SHORT, (UCHAR*) &structSQLTypeInfo.MinimumScale, 0, &cbRet) != SQL_SUCCESS)
715 // return(DispAllErrors(henv, hdbc, hstmt));
716
717 //#ifdef __UNIX__ // BJO : IODBC knows about 5, not 15...
718 // if (SQLGetData(hstmt, 5, SQL_C_SHORT,(UCHAR*) &structSQLTypeInfo.MaximumScale, 0, &cbRet) != SQL_SUCCESS)
719 // return(DispAllErrors(henv, hdbc, hstmt));
720 //#else
721 if (SQLGetData(hstmt, 15, SQL_C_SHORT,(UCHAR*) &structSQLTypeInfo.MaximumScale, 0, &cbRet) != SQL_SUCCESS)
722 return(DispAllErrors(henv, hdbc, hstmt));
723 //#endif
724
725 if (structSQLTypeInfo.MaximumScale < 0)
726 structSQLTypeInfo.MaximumScale = 0;
727
728 // Close the statement handle which closes open cursors
729 if (SQLFreeStmt(hstmt, SQL_CLOSE) != SQL_SUCCESS)
730 return(DispAllErrors(henv, hdbc, hstmt));
731
732 // Completed Successfully
733 return(TRUE);
734
735 } // wxDB::getDataTypeInfo()
736
737 /********** wxDB::Close() **********/
738 void wxDB::Close(void)
739 {
740 // Close the Sql Log file
741 if (fpSqlLog)
742 {
743 fclose(fpSqlLog);
744 fpSqlLog = 0;
745 }
746
747 // Free statement handle
748 if (dbIsOpen)
749 {
750 if (SQLFreeStmt(hstmt, SQL_DROP) != SQL_SUCCESS)
751 DispAllErrors(henv, hdbc);
752 }
753
754 // Disconnect from the datasource
755 if (SQLDisconnect(hdbc) != SQL_SUCCESS)
756 DispAllErrors(henv, hdbc);
757
758 // Free the connection to the datasource
759 if (SQLFreeConnect(hdbc) != SQL_SUCCESS)
760 DispAllErrors(henv, hdbc);
761
762 // There should be zero Ctable objects still connected to this db object
763 assert(nTables == 0);
764
765 #if __WXDEBUG__ > 0
766 CstructTablesInUse *tiu;
767 wxNode *pNode;
768 pNode = TablesInUse.First();
769 char s[80];
770 char s2[80];
771 while (pNode)
772 {
773 tiu = (CstructTablesInUse *)pNode->Data();
774 if (tiu->pDb == this)
775 {
776 sprintf(s, "(%-20s) tableID:[%6lu] pDb:[%lu]", tiu->tableName,tiu->tableID,tiu->pDb);
777 sprintf(s2,"Orphaned found using pDb:[%lu]",this);
778 wxMessageBox (s,s2);
779 }
780 pNode = pNode->Next();
781 }
782 #endif
783
784 // Copy the error messages to a global variable
785 for (int i = 0; i < DB_MAX_ERROR_HISTORY; i++)
786 strcpy(DBerrorList[i],errorList[i]);
787
788 } // wxDB::Close()
789
790 /********** wxDB::CommitTrans() **********/
791 bool wxDB::CommitTrans(void)
792 {
793 if (this)
794 {
795 // Commit the transaction
796 if (SQLTransact(henv, hdbc, SQL_COMMIT) != SQL_SUCCESS)
797 return(DispAllErrors(henv, hdbc));
798 }
799
800 // Completed successfully
801 return(TRUE);
802
803 } // wxDB::CommitTrans()
804
805 /********** wxDB::RollbackTrans() **********/
806 bool wxDB::RollbackTrans(void)
807 {
808 // Rollback the transaction
809 if (SQLTransact(henv, hdbc, SQL_ROLLBACK) != SQL_SUCCESS)
810 return(DispAllErrors(henv, hdbc));
811
812 // Completed successfully
813 return(TRUE);
814
815 } // wxDB::RollbackTrans()
816
817 /********** wxDB::DispAllErrors() **********/
818 bool wxDB::DispAllErrors(HENV aHenv, HDBC aHdbc, HSTMT aHstmt)
819 {
820 char odbcErrMsg[DB_MAX_ERROR_MSG_LEN];
821
822 while (SQLError(aHenv, aHdbc, aHstmt, (UCHAR FAR *) sqlState, &nativeError, (UCHAR FAR *) errorMsg, SQL_MAX_MESSAGE_LENGTH - 1, &cbErrorMsg) == SQL_SUCCESS)
823 {
824 sprintf(odbcErrMsg, "SQL State = %s\nNative Error Code = %li\nError Message = %s\n", sqlState, nativeError, errorMsg);
825 logError(odbcErrMsg, sqlState);
826 if (!silent)
827 {
828 #ifdef DBDEBUG_CONSOLE
829 // When run in console mode, use standard out to display errors.
830 cout << odbcErrMsg << endl;
831 cout << "Press any key to continue..." << endl;
832 getchar();
833 #endif
834 }
835
836 #ifdef __WXDEBUG__
837 wxMessageBox(odbcErrMsg);
838 #endif
839 }
840
841 return(FALSE); // This function always returns false.
842
843 } // wxDB::DispAllErrors()
844
845 /********** wxDB::GetNextError() **********/
846 bool wxDB::GetNextError(HENV aHenv, HDBC aHdbc, HSTMT aHstmt)
847 {
848 if (SQLError(aHenv, aHdbc, aHstmt, (UCHAR FAR *) sqlState, &nativeError, (UCHAR FAR *) errorMsg, SQL_MAX_MESSAGE_LENGTH - 1, &cbErrorMsg) == SQL_SUCCESS)
849 return(TRUE);
850 else
851 return(FALSE);
852
853 } // wxDB::GetNextError()
854
855 /********** wxDB::DispNextError() **********/
856 void wxDB::DispNextError(void)
857 {
858 char odbcErrMsg[DB_MAX_ERROR_MSG_LEN];
859
860 sprintf(odbcErrMsg, "SQL State = %s\nNative Error Code = %li\nError Message = %s\n", sqlState, nativeError, errorMsg);
861 logError(odbcErrMsg, sqlState);
862
863 if (silent)
864 return;
865
866 #ifdef DBDEBUG_CONSOLE
867 // When run in console mode, use standard out to display errors.
868 cout << odbcErrMsg << endl;
869 cout << "Press any key to continue..." << endl;
870 getchar();
871 #endif
872
873 } // wxDB::DispNextError()
874
875 /********** wxDB::logError() **********/
876 void wxDB::logError(char *errMsg, char *SQLState)
877 {
878 assert(errMsg && strlen(errMsg));
879
880 static int pLast = -1;
881 int dbStatus;
882
883 if (++pLast == DB_MAX_ERROR_HISTORY)
884 {
885 int i;
886 for (i = 0; i < DB_MAX_ERROR_HISTORY; i++)
887 strcpy(errorList[i], errorList[i+1]);
888 pLast--;
889 }
890
891 strcpy(errorList[pLast], errMsg);
892
893 if (SQLState && strlen(SQLState))
894 if ((dbStatus = TranslateSqlState(SQLState)) != DB_ERR_FUNCTION_SEQUENCE_ERROR)
895 DB_STATUS = dbStatus;
896
897 // Add the errmsg to the sql log
898 WriteSqlLog(errMsg);
899
900 } // wxDB::logError()
901
902 /**********wxDB::TranslateSqlState() **********/
903 int wxDB::TranslateSqlState(char *SQLState)
904 {
905 if (!strcmp(SQLState, "01000"))
906 return(DB_ERR_GENERAL_WARNING);
907 if (!strcmp(SQLState, "01002"))
908 return(DB_ERR_DISCONNECT_ERROR);
909 if (!strcmp(SQLState, "01004"))
910 return(DB_ERR_DATA_TRUNCATED);
911 if (!strcmp(SQLState, "01006"))
912 return(DB_ERR_PRIV_NOT_REVOKED);
913 if (!strcmp(SQLState, "01S00"))
914 return(DB_ERR_INVALID_CONN_STR_ATTR);
915 if (!strcmp(SQLState, "01S01"))
916 return(DB_ERR_ERROR_IN_ROW);
917 if (!strcmp(SQLState, "01S02"))
918 return(DB_ERR_OPTION_VALUE_CHANGED);
919 if (!strcmp(SQLState, "01S03"))
920 return(DB_ERR_NO_ROWS_UPD_OR_DEL);
921 if (!strcmp(SQLState, "01S04"))
922 return(DB_ERR_MULTI_ROWS_UPD_OR_DEL);
923 if (!strcmp(SQLState, "07001"))
924 return(DB_ERR_WRONG_NO_OF_PARAMS);
925 if (!strcmp(SQLState, "07006"))
926 return(DB_ERR_DATA_TYPE_ATTR_VIOL);
927 if (!strcmp(SQLState, "08001"))
928 return(DB_ERR_UNABLE_TO_CONNECT);
929 if (!strcmp(SQLState, "08002"))
930 return(DB_ERR_CONNECTION_IN_USE);
931 if (!strcmp(SQLState, "08003"))
932 return(DB_ERR_CONNECTION_NOT_OPEN);
933 if (!strcmp(SQLState, "08004"))
934 return(DB_ERR_REJECTED_CONNECTION);
935 if (!strcmp(SQLState, "08007"))
936 return(DB_ERR_CONN_FAIL_IN_TRANS);
937 if (!strcmp(SQLState, "08S01"))
938 return(DB_ERR_COMM_LINK_FAILURE);
939 if (!strcmp(SQLState, "21S01"))
940 return(DB_ERR_INSERT_VALUE_LIST_MISMATCH);
941 if (!strcmp(SQLState, "21S02"))
942 return(DB_ERR_DERIVED_TABLE_MISMATCH);
943 if (!strcmp(SQLState, "22001"))
944 return(DB_ERR_STRING_RIGHT_TRUNC);
945 if (!strcmp(SQLState, "22003"))
946 return(DB_ERR_NUMERIC_VALUE_OUT_OF_RNG);
947 if (!strcmp(SQLState, "22005"))
948 return(DB_ERR_ERROR_IN_ASSIGNMENT);
949 if (!strcmp(SQLState, "22008"))
950 return(DB_ERR_DATETIME_FLD_OVERFLOW);
951 if (!strcmp(SQLState, "22012"))
952 return(DB_ERR_DIVIDE_BY_ZERO);
953 if (!strcmp(SQLState, "22026"))
954 return(DB_ERR_STR_DATA_LENGTH_MISMATCH);
955 if (!strcmp(SQLState, "23000"))
956 return(DB_ERR_INTEGRITY_CONSTRAINT_VIOL);
957 if (!strcmp(SQLState, "24000"))
958 return(DB_ERR_INVALID_CURSOR_STATE);
959 if (!strcmp(SQLState, "25000"))
960 return(DB_ERR_INVALID_TRANS_STATE);
961 if (!strcmp(SQLState, "28000"))
962 return(DB_ERR_INVALID_AUTH_SPEC);
963 if (!strcmp(SQLState, "34000"))
964 return(DB_ERR_INVALID_CURSOR_NAME);
965 if (!strcmp(SQLState, "37000"))
966 return(DB_ERR_SYNTAX_ERROR_OR_ACCESS_VIOL);
967 if (!strcmp(SQLState, "3C000"))
968 return(DB_ERR_DUPLICATE_CURSOR_NAME);
969 if (!strcmp(SQLState, "40001"))
970 return(DB_ERR_SERIALIZATION_FAILURE);
971 if (!strcmp(SQLState, "42000"))
972 return(DB_ERR_SYNTAX_ERROR_OR_ACCESS_VIOL2);
973 if (!strcmp(SQLState, "70100"))
974 return(DB_ERR_OPERATION_ABORTED);
975 if (!strcmp(SQLState, "IM001"))
976 return(DB_ERR_UNSUPPORTED_FUNCTION);
977 if (!strcmp(SQLState, "IM002"))
978 return(DB_ERR_NO_DATA_SOURCE);
979 if (!strcmp(SQLState, "IM003"))
980 return(DB_ERR_DRIVER_LOAD_ERROR);
981 if (!strcmp(SQLState, "IM004"))
982 return(DB_ERR_SQLALLOCENV_FAILED);
983 if (!strcmp(SQLState, "IM005"))
984 return(DB_ERR_SQLALLOCCONNECT_FAILED);
985 if (!strcmp(SQLState, "IM006"))
986 return(DB_ERR_SQLSETCONNECTOPTION_FAILED);
987 if (!strcmp(SQLState, "IM007"))
988 return(DB_ERR_NO_DATA_SOURCE_DLG_PROHIB);
989 if (!strcmp(SQLState, "IM008"))
990 return(DB_ERR_DIALOG_FAILED);
991 if (!strcmp(SQLState, "IM009"))
992 return(DB_ERR_UNABLE_TO_LOAD_TRANSLATION_DLL);
993 if (!strcmp(SQLState, "IM010"))
994 return(DB_ERR_DATA_SOURCE_NAME_TOO_LONG);
995 if (!strcmp(SQLState, "IM011"))
996 return(DB_ERR_DRIVER_NAME_TOO_LONG);
997 if (!strcmp(SQLState, "IM012"))
998 return(DB_ERR_DRIVER_KEYWORD_SYNTAX_ERROR);
999 if (!strcmp(SQLState, "IM013"))
1000 return(DB_ERR_TRACE_FILE_ERROR);
1001 if (!strcmp(SQLState, "S0001"))
1002 return(DB_ERR_TABLE_OR_VIEW_ALREADY_EXISTS);
1003 if (!strcmp(SQLState, "S0002"))
1004 return(DB_ERR_TABLE_NOT_FOUND);
1005 if (!strcmp(SQLState, "S0011"))
1006 return(DB_ERR_INDEX_ALREADY_EXISTS);
1007 if (!strcmp(SQLState, "S0012"))
1008 return(DB_ERR_INDEX_NOT_FOUND);
1009 if (!strcmp(SQLState, "S0021"))
1010 return(DB_ERR_COLUMN_ALREADY_EXISTS);
1011 if (!strcmp(SQLState, "S0022"))
1012 return(DB_ERR_COLUMN_NOT_FOUND);
1013 if (!strcmp(SQLState, "S0023"))
1014 return(DB_ERR_NO_DEFAULT_FOR_COLUMN);
1015 if (!strcmp(SQLState, "S1000"))
1016 return(DB_ERR_GENERAL_ERROR);
1017 if (!strcmp(SQLState, "S1001"))
1018 return(DB_ERR_MEMORY_ALLOCATION_FAILURE);
1019 if (!strcmp(SQLState, "S1002"))
1020 return(DB_ERR_INVALID_COLUMN_NUMBER);
1021 if (!strcmp(SQLState, "S1003"))
1022 return(DB_ERR_PROGRAM_TYPE_OUT_OF_RANGE);
1023 if (!strcmp(SQLState, "S1004"))
1024 return(DB_ERR_SQL_DATA_TYPE_OUT_OF_RANGE);
1025 if (!strcmp(SQLState, "S1008"))
1026 return(DB_ERR_OPERATION_CANCELLED);
1027 if (!strcmp(SQLState, "S1009"))
1028 return(DB_ERR_INVALID_ARGUMENT_VALUE);
1029 if (!strcmp(SQLState, "S1010"))
1030 return(DB_ERR_FUNCTION_SEQUENCE_ERROR);
1031 if (!strcmp(SQLState, "S1011"))
1032 return(DB_ERR_OPERATION_INVALID_AT_THIS_TIME);
1033 if (!strcmp(SQLState, "S1012"))
1034 return(DB_ERR_INVALID_TRANS_OPERATION_CODE);
1035 if (!strcmp(SQLState, "S1015"))
1036 return(DB_ERR_NO_CURSOR_NAME_AVAIL);
1037 if (!strcmp(SQLState, "S1090"))
1038 return(DB_ERR_INVALID_STR_OR_BUF_LEN);
1039 if (!strcmp(SQLState, "S1091"))
1040 return(DB_ERR_DESCRIPTOR_TYPE_OUT_OF_RANGE);
1041 if (!strcmp(SQLState, "S1092"))
1042 return(DB_ERR_OPTION_TYPE_OUT_OF_RANGE);
1043 if (!strcmp(SQLState, "S1093"))
1044 return(DB_ERR_INVALID_PARAM_NO);
1045 if (!strcmp(SQLState, "S1094"))
1046 return(DB_ERR_INVALID_SCALE_VALUE);
1047 if (!strcmp(SQLState, "S1095"))
1048 return(DB_ERR_FUNCTION_TYPE_OUT_OF_RANGE);
1049 if (!strcmp(SQLState, "S1096"))
1050 return(DB_ERR_INF_TYPE_OUT_OF_RANGE);
1051 if (!strcmp(SQLState, "S1097"))
1052 return(DB_ERR_COLUMN_TYPE_OUT_OF_RANGE);
1053 if (!strcmp(SQLState, "S1098"))
1054 return(DB_ERR_SCOPE_TYPE_OUT_OF_RANGE);
1055 if (!strcmp(SQLState, "S1099"))
1056 return(DB_ERR_NULLABLE_TYPE_OUT_OF_RANGE);
1057 if (!strcmp(SQLState, "S1100"))
1058 return(DB_ERR_UNIQUENESS_OPTION_TYPE_OUT_OF_RANGE);
1059 if (!strcmp(SQLState, "S1101"))
1060 return(DB_ERR_ACCURACY_OPTION_TYPE_OUT_OF_RANGE);
1061 if (!strcmp(SQLState, "S1103"))
1062 return(DB_ERR_DIRECTION_OPTION_OUT_OF_RANGE);
1063 if (!strcmp(SQLState, "S1104"))
1064 return(DB_ERR_INVALID_PRECISION_VALUE);
1065 if (!strcmp(SQLState, "S1105"))
1066 return(DB_ERR_INVALID_PARAM_TYPE);
1067 if (!strcmp(SQLState, "S1106"))
1068 return(DB_ERR_FETCH_TYPE_OUT_OF_RANGE);
1069 if (!strcmp(SQLState, "S1107"))
1070 return(DB_ERR_ROW_VALUE_OUT_OF_RANGE);
1071 if (!strcmp(SQLState, "S1108"))
1072 return(DB_ERR_CONCURRENCY_OPTION_OUT_OF_RANGE);
1073 if (!strcmp(SQLState, "S1109"))
1074 return(DB_ERR_INVALID_CURSOR_POSITION);
1075 if (!strcmp(SQLState, "S1110"))
1076 return(DB_ERR_INVALID_DRIVER_COMPLETION);
1077 if (!strcmp(SQLState, "S1111"))
1078 return(DB_ERR_INVALID_BOOKMARK_VALUE);
1079 if (!strcmp(SQLState, "S1C00"))
1080 return(DB_ERR_DRIVER_NOT_CAPABLE);
1081 if (!strcmp(SQLState, "S1T00"))
1082 return(DB_ERR_TIMEOUT_EXPIRED);
1083
1084 // No match
1085 return(0);
1086
1087 } // wxDB::TranslateSqlState()
1088
1089 /********** wxDB::Grant() **********/
1090 bool wxDB::Grant(int privileges, char *tableName, char *userList)
1091 {
1092 char sqlStmt[DB_MAX_STATEMENT_LEN];
1093
1094 // Build the grant statement
1095 strcpy(sqlStmt, "GRANT ");
1096 if (privileges == DB_GRANT_ALL)
1097 strcat(sqlStmt, "ALL");
1098 else
1099 {
1100 int c = 0;
1101 if (privileges & DB_GRANT_SELECT)
1102 {
1103 strcat(sqlStmt, "SELECT");
1104 c++;
1105 }
1106 if (privileges & DB_GRANT_INSERT)
1107 {
1108 if (c++)
1109 strcat(sqlStmt, ", ");
1110 strcat(sqlStmt, "INSERT");
1111 }
1112 if (privileges & DB_GRANT_UPDATE)
1113 {
1114 if (c++)
1115 strcat(sqlStmt, ", ");
1116 strcat(sqlStmt, "UPDATE");
1117 }
1118 if (privileges & DB_GRANT_DELETE)
1119 {
1120 if (c++)
1121 strcat(sqlStmt, ", ");
1122 strcat(sqlStmt, "DELETE");
1123 }
1124 }
1125
1126 strcat(sqlStmt, " ON ");
1127 strcat(sqlStmt, tableName);
1128 strcat(sqlStmt, " TO ");
1129 strcat(sqlStmt, userList);
1130
1131 #ifdef DBDEBUG_CONSOLE
1132 cout << endl << sqlStmt << endl;
1133 #endif
1134
1135 WriteSqlLog(sqlStmt);
1136
1137 return(ExecSql(sqlStmt));
1138
1139 } // wxDB::Grant()
1140
1141 /********** wxDB::CreateView() **********/
1142 bool wxDB::CreateView(char *viewName, char *colList, char *pSqlStmt, bool attemptDrop)
1143 {
1144 char sqlStmt[DB_MAX_STATEMENT_LEN];
1145
1146 // Drop the view first
1147 if (attemptDrop && !DropView(viewName))
1148 return FALSE;
1149
1150 // Build the create view statement
1151 strcpy(sqlStmt, "CREATE VIEW ");
1152 strcat(sqlStmt, viewName);
1153
1154 if (strlen(colList))
1155 {
1156 strcat(sqlStmt, " (");
1157 strcat(sqlStmt, colList);
1158 strcat(sqlStmt, ")");
1159 }
1160
1161 strcat(sqlStmt, " AS ");
1162 strcat(sqlStmt, pSqlStmt);
1163
1164 WriteSqlLog(sqlStmt);
1165
1166 #ifdef DBDEBUG_CONSOLE
1167 cout << sqlStmt << endl;
1168 #endif
1169
1170 return(ExecSql(sqlStmt));
1171
1172 } // wxDB::CreateView()
1173
1174 /********** wxDB::DropView() **********/
1175 bool wxDB::DropView(char *viewName)
1176 {
1177 // NOTE: This function returns TRUE if the View does not exist, but
1178 // only for identified databases. Code will need to be added
1179 // below for any other databases when those databases are defined
1180 // to handle this situation consistently
1181
1182 char sqlStmt[DB_MAX_STATEMENT_LEN];
1183
1184 sprintf(sqlStmt, "DROP VIEW %s", viewName);
1185
1186 WriteSqlLog(sqlStmt);
1187
1188 #ifdef DBDEBUG_CONSOLE
1189 cout << endl << sqlStmt << endl;
1190 #endif
1191
1192 if (SQLExecDirect(hstmt, (UCHAR FAR *) sqlStmt, SQL_NTS) != SQL_SUCCESS)
1193 {
1194 // Check for "Base table not found" error and ignore
1195 GetNextError(henv, hdbc, hstmt);
1196 if (strcmp(sqlState,"S0002")) // "Base table not found"
1197 {
1198 // Check for product specific error codes
1199 if (!((Dbms() == dbmsSYBASE_ASA && !strcmp(sqlState,"42000")))) // 5.x (and lower?)
1200 {
1201 DispNextError();
1202 DispAllErrors(henv, hdbc, hstmt);
1203 RollbackTrans();
1204 return(FALSE);
1205 }
1206 }
1207 }
1208
1209 // Commit the transaction
1210 if (! CommitTrans())
1211 return(FALSE);
1212
1213 return TRUE;
1214
1215 } // wxDB::DropView()
1216
1217
1218 /********** wxDB::ExecSql() **********/
1219 bool wxDB::ExecSql(char *pSqlStmt)
1220 {
1221 SQLFreeStmt(hstmt, SQL_CLOSE);
1222 if (SQLExecDirect(hstmt, (UCHAR FAR *) pSqlStmt, SQL_NTS) == SQL_SUCCESS)
1223 return(TRUE);
1224 else
1225 {
1226 DispAllErrors(henv, hdbc, hstmt);
1227 return(FALSE);
1228 }
1229
1230 } // wxDB::ExecSql()
1231
1232 /********** wxDB::GetNext() **********/
1233 bool wxDB::GetNext(void)
1234 {
1235 if (SQLFetch(hstmt) == SQL_SUCCESS)
1236 return(TRUE);
1237 else
1238 {
1239 DispAllErrors(henv, hdbc, hstmt);
1240 return(FALSE);
1241 }
1242
1243 } // wxDB::GetNext()
1244
1245 /********** wxDB::GetData() **********/
1246 bool wxDB::GetData(UWORD colNo, SWORD cType, PTR pData, SDWORD maxLen, SDWORD FAR *cbReturned)
1247 {
1248 assert(pData);
1249 assert(cbReturned);
1250
1251 if (SQLGetData(hstmt, colNo, cType, pData, maxLen, cbReturned) == SQL_SUCCESS)
1252 return(TRUE);
1253 else
1254 {
1255 DispAllErrors(henv, hdbc, hstmt);
1256 return(FALSE);
1257 }
1258
1259 } // wxDB::GetData()
1260
1261 /********** wxDB::GetColumns() **********/
1262 /*
1263 * 1) The last array element of the tableName[] argument must be zero (null).
1264 * This is how the end of the array is detected.
1265 * 2) This function returns an array of CcolInf structures. If no columns
1266 * were found, or an error occured, this pointer will be zero (null). THE
1267 * CALLING FUNCTION IS RESPONSIBLE FOR DELETING THE MEMORY RETURNED WHEN IT
1268 * IS FINISHED WITH IT. i.e.
1269 *
1270 * CcolInf *colInf = pDb->GetColumns(tableList, userID);
1271 * if (colInf)
1272 * {
1273 * // Use the column inf
1274 * .......
1275 * // Destroy the memory
1276 * delete [] colInf;
1277 * }
1278 */
1279 CcolInf *wxDB::GetColumns(char *tableName[], char *userID)
1280 {
1281 UINT noCols = 0;
1282 UINT colNo = 0;
1283 CcolInf *colInf = 0;
1284 RETCODE retcode;
1285 SDWORD cb;
1286 char tblName[DB_MAX_TABLE_NAME_LEN+1];
1287 char colName[DB_MAX_COLUMN_NAME_LEN+1];
1288 SWORD sqlDataType;
1289 char userIdUC[80+1];
1290 char tableNameUC[DB_MAX_TABLE_NAME_LEN+1];
1291
1292 if (!userID || !strlen(userID))
1293 userID = uid;
1294
1295 // dBase does not use user names, and some drivers fail if you try to pass one
1296 if (Dbms() == dbmsDBASE)
1297 userID = "";
1298
1299 // Oracle user names may only be in uppercase, so force
1300 // the name to uppercase
1301 if (Dbms() == dbmsORACLE)
1302 {
1303 int i = 0;
1304 for (char *p = userID; *p; p++)
1305 userIdUC[i++] = toupper(*p);
1306 userIdUC[i] = 0;
1307 userID = userIdUC;
1308 }
1309
1310 // Pass 1 - Determine how many columns there are.
1311 // Pass 2 - Allocate the CcolInf array and fill in
1312 // the array with the column information.
1313 int pass;
1314 for (pass = 1; pass <= 2; pass++)
1315 {
1316 if (pass == 2)
1317 {
1318 if (noCols == 0) // Probably a bogus table name(s)
1319 break;
1320 // Allocate n CcolInf objects to hold the column information
1321 colInf = new CcolInf[noCols+1];
1322 if (!colInf)
1323 break;
1324 // Mark the end of the array
1325 strcpy(colInf[noCols].tableName, "");
1326 strcpy(colInf[noCols].colName, "");
1327 colInf[noCols].sqlDataType = 0;
1328 }
1329 // Loop through each table name
1330 int tbl;
1331 for (tbl = 0; tableName[tbl]; tbl++)
1332 {
1333 // Oracle table names are uppercase only, so force
1334 // the name to uppercase just in case programmer forgot to do this
1335 if (Dbms() == dbmsORACLE)
1336 {
1337 int i = 0;
1338 for (char *p = tableName[tbl]; *p; p++)
1339 tableNameUC[i++] = toupper(*p);
1340 tableNameUC[i] = 0;
1341 }
1342 else
1343 sprintf(tableNameUC,tableName[tbl]);
1344
1345 SQLFreeStmt(hstmt, SQL_CLOSE);
1346
1347 // MySQL and Access cannot accept a user name when looking up column names, so we
1348 // use the call below that leaves out the user name
1349 if (strcmp(userID,"") &&
1350 Dbms() != dbmsMY_SQL &&
1351 Dbms() != dbmsACCESS)
1352 {
1353 retcode = SQLColumns(hstmt,
1354 NULL, 0, // All qualifiers
1355 (UCHAR *) userID, SQL_NTS, // Owner
1356 (UCHAR *) tableNameUC, SQL_NTS,
1357 NULL, 0); // All columns
1358 }
1359 else
1360 {
1361 retcode = SQLColumns(hstmt,
1362 NULL, 0, // All qualifiers
1363 NULL, 0, // Owner
1364 (UCHAR *) tableNameUC, SQL_NTS,
1365 NULL, 0); // All columns
1366 }
1367 if (retcode != SQL_SUCCESS)
1368 { // Error occured, abort
1369 DispAllErrors(henv, hdbc, hstmt);
1370 if (colInf)
1371 delete [] colInf;
1372 SQLFreeStmt(hstmt, SQL_UNBIND);
1373 SQLFreeStmt(hstmt, SQL_CLOSE);
1374 return(0);
1375 }
1376 SQLBindCol(hstmt, 3, SQL_C_CHAR, (UCHAR*) tblName, DB_MAX_TABLE_NAME_LEN+1, &cb);
1377 SQLBindCol(hstmt, 4, SQL_C_CHAR, (UCHAR*) colName, DB_MAX_COLUMN_NAME_LEN+1, &cb);
1378 SQLBindCol(hstmt, 5, SQL_C_SSHORT, (UCHAR*) &sqlDataType, 0, &cb);
1379 while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS)
1380 {
1381 if (pass == 1) // First pass, just add up the number of columns
1382 noCols++;
1383 else // Pass 2; Fill in the array of structures
1384 {
1385 if (colNo < noCols) // Some extra error checking to prevent memory overwrites
1386 {
1387 strcpy(colInf[colNo].tableName, tblName);
1388 strcpy(colInf[colNo].colName, colName);
1389 colInf[colNo].sqlDataType = sqlDataType;
1390 colNo++;
1391 }
1392 }
1393 }
1394 if (retcode != SQL_NO_DATA_FOUND)
1395 { // Error occured, abort
1396 DispAllErrors(henv, hdbc, hstmt);
1397 if (colInf)
1398 delete [] colInf;
1399 SQLFreeStmt(hstmt, SQL_UNBIND);
1400 SQLFreeStmt(hstmt, SQL_CLOSE);
1401 return(0);
1402 }
1403 }
1404 }
1405
1406 SQLFreeStmt(hstmt, SQL_UNBIND);
1407 SQLFreeStmt(hstmt, SQL_CLOSE);
1408 return colInf;
1409
1410 } // wxDB::GetColumns()
1411
1412
1413 /********** wxDB::Catalog() **********/
1414 bool wxDB::Catalog(char *userID, char *fileName)
1415 {
1416 assert(fileName && strlen(fileName));
1417
1418 RETCODE retcode;
1419 SDWORD cb;
1420 char tblName[DB_MAX_TABLE_NAME_LEN+1];
1421 char tblNameSave[DB_MAX_TABLE_NAME_LEN+1];
1422 char colName[DB_MAX_COLUMN_NAME_LEN+1];
1423 SWORD sqlDataType;
1424 char typeName[30+1];
1425 SWORD precision, length;
1426
1427 FILE *fp = fopen(fileName,"wt");
1428 if (fp == NULL)
1429 return(FALSE);
1430
1431 SQLFreeStmt(hstmt, SQL_CLOSE);
1432
1433 if (!userID || !strlen(userID))
1434 userID = uid;
1435
1436 char userIdUC[80+1];
1437 // Oracle user names may only be in uppercase, so force
1438 // the name to uppercase
1439 if (Dbms() == dbmsORACLE)
1440 {
1441 int i = 0;
1442 for (char *p = userID; *p; p++)
1443 userIdUC[i++] = toupper(*p);
1444 userIdUC[i] = 0;
1445 userID = userIdUC;
1446 }
1447
1448 if (strcmp(userID,""))
1449 {
1450 retcode = SQLColumns(hstmt,
1451 NULL, 0, // All qualifiers
1452 (UCHAR *) userID, SQL_NTS, // User specified
1453 NULL, 0, // All tables
1454 NULL, 0); // All columns
1455 }
1456 else
1457 {
1458 retcode = SQLColumns(hstmt,
1459 NULL, 0, // All qualifiers
1460 NULL, 0, // User specified
1461 NULL, 0, // All tables
1462 NULL, 0); // All columns
1463 }
1464 if (retcode != SQL_SUCCESS)
1465 {
1466 DispAllErrors(henv, hdbc, hstmt);
1467 fclose(fp);
1468 return(FALSE);
1469 }
1470
1471 SQLBindCol(hstmt, 3, SQL_C_CHAR, (UCHAR*) tblName, DB_MAX_TABLE_NAME_LEN+1, &cb);
1472 SQLBindCol(hstmt, 4, SQL_C_CHAR, (UCHAR*) colName, DB_MAX_COLUMN_NAME_LEN+1, &cb);
1473 SQLBindCol(hstmt, 5, SQL_C_SSHORT, (UCHAR*) &sqlDataType, 0, &cb);
1474 SQLBindCol(hstmt, 6, SQL_C_CHAR, (UCHAR*) typeName, sizeof(typeName), &cb);
1475 SQLBindCol(hstmt, 7, SQL_C_SSHORT, (UCHAR*) &precision, 0, &cb);
1476 SQLBindCol(hstmt, 8, SQL_C_SSHORT, (UCHAR*) &length, 0, &cb);
1477
1478 char outStr[256];
1479 strcpy(tblNameSave,"");
1480 int cnt = 0;
1481
1482 while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS)
1483 {
1484 if (strcmp(tblName,tblNameSave))
1485 {
1486 if (cnt)
1487 fputs("\n", fp);
1488 fputs("================================ ", fp);
1489 fputs("================================ ", fp);
1490 fputs("===================== ", fp);
1491 fputs("========= ", fp);
1492 fputs("=========\n", fp);
1493 sprintf(outStr, "%-32s %-32s %-21s %9s %9s\n",
1494 "TABLE NAME", "COLUMN NAME", "DATA TYPE", "PRECISION", "LENGTH");
1495 fputs(outStr, fp);
1496 fputs("================================ ", fp);
1497 fputs("================================ ", fp);
1498 fputs("===================== ", fp);
1499 fputs("========= ", fp);
1500 fputs("=========\n", fp);
1501 strcpy(tblNameSave,tblName);
1502 }
1503 sprintf(outStr, "%-32s %-32s (%04d)%-15s %9d %9d\n",
1504 tblName, colName, sqlDataType, typeName, precision, length);
1505 if (fputs(outStr, fp) == EOF)
1506 {
1507 SQLFreeStmt(hstmt, SQL_UNBIND);
1508 SQLFreeStmt(hstmt, SQL_CLOSE);
1509 fclose(fp);
1510 return(FALSE);
1511 }
1512 cnt++;
1513 }
1514
1515 if (retcode != SQL_NO_DATA_FOUND)
1516 DispAllErrors(henv, hdbc, hstmt);
1517
1518 SQLFreeStmt(hstmt, SQL_UNBIND);
1519 SQLFreeStmt(hstmt, SQL_CLOSE);
1520
1521 fclose(fp);
1522 return(retcode == SQL_NO_DATA_FOUND);
1523
1524 } // wxDB::Catalog()
1525
1526
1527 // Table name can refer to a table, view, alias or synonym. Returns true
1528 // if the object exists in the database. This function does not indicate
1529 // whether or not the user has privleges to query or perform other functions
1530 // on the table.
1531 bool wxDB::TableExists(char *tableName, char *userID, char *tablePath)
1532 {
1533 assert(tableName && strlen(tableName));
1534
1535 if (Dbms() == dbmsDBASE)
1536 {
1537 wxString dbName;
1538 if (tablePath && strlen(tablePath))
1539 dbName.sprintf("%s/%s.dbf",tablePath,tableName);
1540 else
1541 dbName.sprintf("%s.dbf",tableName);
1542 bool glt;
1543 glt = wxFileExists(dbName.GetData());
1544 return glt;
1545 }
1546
1547 if (!userID || !strlen(userID))
1548 userID = uid;
1549
1550 char userIdUC[80+1];
1551 // Oracle user names may only be in uppercase, so force
1552 // the name to uppercase
1553 if (Dbms() == dbmsORACLE)
1554 {
1555 int i = 0;
1556 for (char *p = userID; *p; p++)
1557 userIdUC[i++] = toupper(*p);
1558 userIdUC[i] = 0;
1559 userID = userIdUC;
1560 }
1561
1562 char tableNameUC[DB_MAX_TABLE_NAME_LEN+1];
1563 // Oracle table names are uppercase only, so force
1564 // the name to uppercase just in case programmer forgot to do this
1565 if (Dbms() == dbmsORACLE)
1566 {
1567 int i = 0;
1568 for (char *p = tableName; *p; p++)
1569 tableNameUC[i++] = toupper(*p);
1570 tableNameUC[i] = 0;
1571 }
1572 else
1573 sprintf(tableNameUC,tableName);
1574
1575 SQLFreeStmt(hstmt, SQL_CLOSE);
1576 RETCODE retcode;
1577
1578 // MySQL and Access cannot accept a user name when looking up table names, so we
1579 // use the call below that leaves out the user name
1580 if (strcmp(userID,"") &&
1581 Dbms() != dbmsMY_SQL &&
1582 Dbms() != dbmsACCESS)
1583 {
1584 retcode = SQLTables(hstmt,
1585 NULL, 0, // All qualifiers
1586 (UCHAR *) userID, SQL_NTS, // All owners
1587 (UCHAR FAR *)tableNameUC, SQL_NTS,
1588 NULL, 0); // All table types
1589 }
1590 else
1591 {
1592 retcode = SQLTables(hstmt,
1593 NULL, 0, // All qualifiers
1594 NULL, 0, // All owners
1595 (UCHAR FAR *)tableNameUC, SQL_NTS,
1596 NULL, 0); // All table types
1597 }
1598 if (retcode != SQL_SUCCESS)
1599 return(DispAllErrors(henv, hdbc, hstmt));
1600
1601 retcode = SQLFetch(hstmt);
1602 if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
1603 {
1604 SQLFreeStmt(hstmt, SQL_CLOSE);
1605 return(DispAllErrors(henv, hdbc, hstmt));
1606 }
1607
1608 SQLFreeStmt(hstmt, SQL_CLOSE);
1609 return(TRUE);
1610
1611 } // wxDB::TableExists()
1612
1613
1614 /********** wxDB::SqlLog() **********/
1615 bool wxDB::SqlLog(enum sqlLog state, char *filename, bool append)
1616 {
1617 assert(state == sqlLogON || state == sqlLogOFF);
1618 assert(state == sqlLogOFF || filename);
1619
1620 if (state == sqlLogON)
1621 {
1622 if (fpSqlLog == 0)
1623 {
1624 fpSqlLog = fopen(filename, (append ? "at" : "wt"));
1625 if (fpSqlLog == NULL)
1626 return(FALSE);
1627 }
1628 }
1629 else // sqlLogOFF
1630 {
1631 if (fpSqlLog)
1632 {
1633 if (fclose(fpSqlLog))
1634 return(FALSE);
1635 fpSqlLog = 0;
1636 }
1637 }
1638
1639 sqlLogState = state;
1640 return(TRUE);
1641
1642 } // wxDB::SqlLog()
1643
1644
1645 /********** wxDB::WriteSqlLog() **********/
1646 bool wxDB::WriteSqlLog(char *logMsg)
1647 {
1648 assert(logMsg);
1649
1650 if (fpSqlLog == 0 || sqlLogState == sqlLogOFF)
1651 return(FALSE);
1652
1653 if (fputs("\n", fpSqlLog) == EOF) return(FALSE);
1654 if (fputs(logMsg, fpSqlLog) == EOF) return(FALSE);
1655 if (fputs("\n", fpSqlLog) == EOF) return(FALSE);
1656
1657 return(TRUE);
1658
1659 } // wxDB::WriteSqlLog()
1660
1661
1662 /********** wxDB::Dbms() **********/
1663 /*
1664 * Be aware that not all database engines use the exact same syntax, and not
1665 * every ODBC compliant database is compliant to the same level of compliancy.
1666 * Some manufacturers support the minimum Level 1 compliancy, and others up
1667 * through Level 3. Others support subsets of features for levels above 1.
1668 *
1669 * If you find an inconsistency between the wxDB class and a specific database
1670 * engine, and an identifier to this section, and special handle the database in
1671 * the area where behavior is non-conforming with the other databases.
1672 *
1673 *
1674 * NOTES ABOUT ISSUES SPECIFIC TO EACH DATABASE ENGINE
1675 * ---------------------------------------------------
1676 *
1677 * ORACLE
1678 * - Currently the only database supported by the class to support VIEWS
1679 *
1680 * DBASE
1681 * - Does not support the SQL_TIMESTAMP structure
1682 * - Supports only one cursor and one connect (apparently? with Microsoft driver only?)
1683 * - Does not automatically create the primary index if the 'keyField' param of SetColDef
1684 * is TRUE. The user must create ALL indexes from their program.
1685 * - Table names can only be 8 characters long
1686 * - Column names can only be 10 characters long
1687 *
1688 * SYBASE (all)
1689 * - To lock a record during QUERY functions, the reserved word 'HOLDLOCK' must be added
1690 * after every table name involved in the query/join if that tables matching record(s)
1691 * are to be locked
1692 * - Ignores the keywords 'FOR UPDATE'. Use the HOLDLOCK functionality described above
1693 *
1694 * SYBASE (Enterprise)
1695 * - If a column is part of the Primary Key, the column cannot be NULL
1696 *
1697 * MY_SQL
1698 * - If a column is part of the Primary Key, the column cannot be NULL
1699 * - Cannot support selecting for update [::CanSelectForUpdate()]. Always returns FALSE
1700 *
1701 * POSTGRES
1702 * - Does not support the keywords 'ASC' or 'DESC' as of release v6.5.0
1703 *
1704 *
1705 */
1706 DBMS wxDB::Dbms(void)
1707 {
1708 if (!strnicmp(dbInf.dbmsName,"Oracle",6))
1709 return(dbmsORACLE);
1710 if (!stricmp(dbInf.dbmsName,"Adaptive Server Anywhere"))
1711 return(dbmsSYBASE_ASA);
1712 if (!stricmp(dbInf.dbmsName,"SQL Server")) // Sybase Adaptive Server Enterprise
1713 return(dbmsSYBASE_ASE);
1714 if (!stricmp(dbInf.dbmsName,"Microsoft SQL Server"))
1715 return(dbmsMS_SQL_SERVER);
1716 if (!stricmp(dbInf.dbmsName,"MySQL"))
1717 return(dbmsMY_SQL);
1718 if (!stricmp(dbInf.dbmsName,"PostgresSQL")) // v6.5.0
1719 return(dbmsPOSTGRES);
1720 if (!stricmp(dbInf.dbmsName,"ACCESS"))
1721 return(dbmsACCESS);
1722 if (!strnicmp(dbInf.dbmsName,"DBASE",5))
1723 return(dbmsDBASE);
1724 return(dbmsUNIDENTIFIED);
1725
1726 } // wxDB::Dbms()
1727
1728
1729 /********** GetDbConnection() **********/
1730 wxDB* WXDLLEXPORT GetDbConnection(DbStuff *pDbStuff)
1731 {
1732 DbList *pList;
1733
1734 // Scan the linked list searching for an available database connection
1735 // that's already been opened but is currently not in use.
1736 for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
1737 {
1738 // The database connection must be for the same datasource
1739 // name and must currently not be in use.
1740 if (pList->Free && (! strcmp(pDbStuff->Dsn, pList->Dsn))) // Found a free connection
1741 {
1742 pList->Free = FALSE;
1743 return(pList->PtrDb);
1744 }
1745 }
1746
1747 // No available connections. A new connection must be made and
1748 // appended to the end of the linked list.
1749 if (PtrBegDbList)
1750 {
1751 // Find the end of the list
1752 for (pList = PtrBegDbList; pList->PtrNext; pList = pList->PtrNext);
1753 // Append a new list item
1754 pList->PtrNext = new DbList;
1755 pList->PtrNext->PtrPrev = pList;
1756 pList = pList->PtrNext;
1757 }
1758 else // Empty list
1759 {
1760 // Create the first node on the list
1761 pList = PtrBegDbList = new DbList;
1762 pList->PtrPrev = 0;
1763 }
1764
1765 // Initialize new node in the linked list
1766 pList->PtrNext = 0;
1767 pList->Free = FALSE;
1768 strcpy(pList->Dsn, pDbStuff->Dsn);
1769 pList->PtrDb = new wxDB(pDbStuff->Henv);
1770
1771 // Connect to the datasource
1772 if (pList->PtrDb->Open(pDbStuff->Dsn, pDbStuff->Uid, pDbStuff->AuthStr))
1773 {
1774 pList->PtrDb->SqlLog(SQLLOGstate,SQLLOGfn,TRUE);
1775 return(pList->PtrDb);
1776 }
1777 else // Unable to connect, destroy list item
1778 {
1779 if (pList->PtrPrev)
1780 pList->PtrPrev->PtrNext = 0;
1781 else
1782 PtrBegDbList = 0; // Empty list again
1783 pList->PtrDb->CommitTrans(); // Commit any open transactions on wxDB object
1784 pList->PtrDb->Close(); // Close the wxDB object
1785 delete pList->PtrDb; // Deletes the wxDB object
1786 delete pList; // Deletes the linked list object
1787 return(0);
1788 }
1789
1790 } // GetDbConnection()
1791
1792 /********** FreeDbConnection() **********/
1793 bool WXDLLEXPORT FreeDbConnection(wxDB *pDb)
1794 {
1795 DbList *pList;
1796
1797 // Scan the linked list searching for the database connection
1798 for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
1799 {
1800 if (pList->PtrDb == pDb) // Found it!!!
1801 return(pList->Free = TRUE);
1802 }
1803
1804 // Never found the database object, return failure
1805 return(FALSE);
1806
1807 } // FreeDbConnection()
1808
1809 /********** CloseDbConnections() **********/
1810 void WXDLLEXPORT CloseDbConnections(void)
1811 {
1812 DbList *pList, *pNext;
1813
1814 // Traverse the linked list closing database connections and freeing memory as I go.
1815 for (pList = PtrBegDbList; pList; pList = pNext)
1816 {
1817 pNext = pList->PtrNext; // Save the pointer to next
1818 pList->PtrDb->CommitTrans(); // Commit any open transactions on wxDB object
1819 pList->PtrDb->Close(); // Close the wxDB object
1820 delete pList->PtrDb; // Deletes the wxDB object
1821 delete pList; // Deletes the linked list object
1822 }
1823
1824 // Mark the list as empty
1825 PtrBegDbList = 0;
1826
1827 } // CloseDbConnections()
1828
1829 /********** NumberDbConnectionsInUse() **********/
1830 int WXDLLEXPORT NumberDbConnectionsInUse(void)
1831 {
1832 DbList *pList;
1833 int cnt = 0;
1834
1835 // Scan the linked list counting db connections that are currently in use
1836 for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
1837 {
1838 if (pList->Free == FALSE)
1839 cnt++;
1840 }
1841
1842 return(cnt);
1843
1844 } // NumberDbConnectionsInUse()
1845
1846 /********** SqlLog() **********/
1847 bool SqlLog(enum sqlLog state, char *filename)
1848 {
1849 bool append = FALSE;
1850 DbList *pList;
1851
1852 for (pList = PtrBegDbList; pList; pList = pList->PtrNext)
1853 {
1854 if (!pList->PtrDb->SqlLog(state,filename,append))
1855 return(FALSE);
1856 append = TRUE;
1857 }
1858
1859 SQLLOGstate = state;
1860 strcpy(SQLLOGfn,filename);
1861
1862 return(TRUE);
1863
1864 } // SqlLog()
1865
1866 /********** GetDataSource() **********/
1867 bool GetDataSource(HENV henv, char *Dsn, SWORD DsnMax, char *DsDesc, SWORD DsDescMax,
1868 UWORD direction)
1869 {
1870 SWORD cb;
1871
1872 if (SQLDataSources(henv, direction, (UCHAR FAR *) Dsn, DsnMax, &cb,
1873 (UCHAR FAR *) DsDesc, DsDescMax, &cb) == SQL_SUCCESS)
1874 return(TRUE);
1875 else
1876 return(FALSE);
1877
1878 } // GetDataSource()
1879
1880 #endif
1881 // wxUSE_ODBC
1882
wxWidgets (Impactor)