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cd5bf2a6 RR |
1 | /* |
2 | * execute.c | |
3 | * | |
4 | * $Id$ | |
5 | * | |
6 | * Invoke a query | |
7 | * | |
8 | * The iODBC driver manager. | |
9 | * | |
10 | * Copyright (C) 1995 by Ke Jin <kejin@empress.com> | |
11 | * | |
12 | * This library is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Library General Public | |
14 | * License as published by the Free Software Foundation; either | |
15 | * version 2 of the License, or (at your option) any later version. | |
16 | * | |
17 | * This library is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * Library General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Library General Public | |
23 | * License along with this library; if not, write to the Free | |
24 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
88ac883a | 27 | #include "config.h" |
cd5bf2a6 | 28 | |
88ac883a VZ |
29 | #include "isql.h" |
30 | #include "isqlext.h" | |
cd5bf2a6 | 31 | |
88ac883a | 32 | #include "dlproc.h" |
cd5bf2a6 | 33 | |
88ac883a VZ |
34 | #include "herr.h" |
35 | #include "henv.h" | |
36 | #include "hdbc.h" | |
37 | #include "hstmt.h" | |
cd5bf2a6 | 38 | |
88ac883a | 39 | #include "itrace.h" |
cd5bf2a6 RR |
40 | |
41 | static void | |
42 | do_cursoropen (STMT_t FAR * pstmt) | |
1a6944fd | 43 | { |
cd5bf2a6 RR |
44 | RETCODE retcode; |
45 | SWORD ncol; | |
46 | ||
47 | pstmt->state = en_stmt_executed; | |
48 | ||
49 | retcode = SQLNumResultCols (pstmt, &ncol); | |
50 | ||
51 | if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO) | |
52 | { | |
53 | if (ncol) | |
54 | { | |
55 | pstmt->state = en_stmt_cursoropen; | |
56 | pstmt->cursor_state = en_stmt_cursor_opened; | |
57 | } | |
58 | else | |
59 | { | |
60 | pstmt->state = en_stmt_executed; | |
61 | pstmt->cursor_state = en_stmt_cursor_no; | |
62 | } | |
63 | } | |
1a6944fd RR |
64 | } |
65 | ||
cd5bf2a6 RR |
66 | |
67 | RETCODE SQL_API | |
68 | SQLExecute (HSTMT hstmt) | |
1a6944fd | 69 | { |
cd5bf2a6 RR |
70 | STMT_t FAR *pstmt = (STMT_t FAR *) hstmt; |
71 | HPROC hproc = SQL_NULL_HPROC; | |
72 | RETCODE retcode; | |
73 | ||
74 | int sqlstat = en_00000; | |
75 | ||
76 | if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC) | |
77 | { | |
78 | return SQL_INVALID_HANDLE; | |
79 | } | |
80 | ||
81 | /* check state */ | |
82 | if (pstmt->asyn_on == en_NullProc) | |
83 | { | |
84 | switch (pstmt->state) | |
85 | { | |
86 | case en_stmt_allocated: | |
87 | sqlstat = en_S1010; | |
88 | break; | |
89 | ||
90 | case en_stmt_executed: | |
91 | if (!pstmt->prep_state) | |
92 | { | |
93 | sqlstat = en_S1010; | |
94 | } | |
95 | break; | |
96 | ||
97 | case en_stmt_cursoropen: | |
98 | if (!pstmt->prep_state) | |
99 | { | |
100 | sqlstat = en_S1010; | |
101 | } | |
102 | break; | |
103 | ||
104 | case en_stmt_fetched: | |
105 | case en_stmt_xfetched: | |
106 | if (!pstmt->prep_state) | |
107 | { | |
108 | sqlstat = en_S1010; | |
109 | } | |
110 | else | |
111 | { | |
112 | sqlstat = en_24000; | |
113 | } | |
114 | break; | |
115 | ||
116 | case en_stmt_needdata: | |
117 | case en_stmt_mustput: | |
118 | case en_stmt_canput: | |
119 | sqlstat = en_S1010; | |
120 | break; | |
121 | ||
122 | default: | |
123 | break; | |
124 | } | |
125 | } | |
126 | else if (pstmt->asyn_on != en_Execute) | |
127 | { | |
128 | sqlstat = en_S1010; | |
129 | } | |
130 | ||
131 | if (sqlstat == en_00000) | |
132 | { | |
133 | hproc = _iodbcdm_getproc (pstmt->hdbc, en_Execute); | |
134 | ||
135 | if (hproc == SQL_NULL_HPROC) | |
136 | { | |
137 | sqlstat = en_IM001; | |
138 | } | |
139 | } | |
140 | ||
141 | if (sqlstat != en_00000) | |
142 | { | |
143 | PUSHSQLERR (pstmt->herr, sqlstat); | |
144 | ||
145 | return SQL_ERROR; | |
146 | } | |
147 | ||
148 | CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_Execute, | |
149 | (pstmt->dhstmt)) | |
150 | ||
151 | /* stmt state transition */ | |
152 | if (pstmt->asyn_on == en_Execute) | |
153 | { | |
154 | switch (retcode) | |
155 | { | |
156 | case SQL_SUCCESS: | |
157 | case SQL_SUCCESS_WITH_INFO: | |
158 | case SQL_NEED_DATA: | |
159 | case SQL_ERROR: | |
160 | pstmt->asyn_on = en_NullProc; | |
161 | break; | |
162 | ||
163 | case SQL_STILL_EXECUTING: | |
164 | default: | |
165 | return retcode; | |
166 | } | |
167 | } | |
168 | ||
169 | switch (pstmt->state) | |
170 | { | |
171 | case en_stmt_prepared: | |
172 | switch (retcode) | |
173 | { | |
174 | case SQL_SUCCESS: | |
175 | case SQL_SUCCESS_WITH_INFO: | |
176 | do_cursoropen (hstmt); | |
177 | break; | |
178 | ||
179 | case SQL_NEED_DATA: | |
180 | pstmt->state = en_stmt_needdata; | |
181 | pstmt->need_on = en_Execute; | |
182 | break; | |
183 | ||
184 | case SQL_STILL_EXECUTING: | |
185 | pstmt->asyn_on = en_Execute; | |
186 | break; | |
187 | ||
188 | default: | |
189 | break; | |
190 | } | |
191 | break; | |
192 | ||
193 | case en_stmt_executed: | |
194 | switch (retcode) | |
195 | { | |
196 | case SQL_ERROR: | |
197 | pstmt->state = en_stmt_allocated; | |
198 | pstmt->cursor_state = en_stmt_cursor_no; | |
199 | pstmt->prep_state = 0; | |
200 | break; | |
201 | ||
202 | case SQL_NEED_DATA: | |
203 | pstmt->state = en_stmt_needdata; | |
204 | pstmt->need_on = en_Execute; | |
205 | break; | |
206 | ||
207 | case SQL_STILL_EXECUTING: | |
208 | pstmt->asyn_on = en_Execute; | |
209 | break; | |
210 | ||
211 | default: | |
212 | break; | |
213 | } | |
214 | break; | |
215 | ||
216 | default: | |
217 | break; | |
218 | } | |
219 | ||
220 | return retcode; | |
1a6944fd RR |
221 | } |
222 | ||
cd5bf2a6 RR |
223 | |
224 | RETCODE SQL_API | |
225 | SQLExecDirect ( | |
226 | HSTMT hstmt, | |
227 | UCHAR FAR * szSqlStr, | |
228 | SDWORD cbSqlStr) | |
1a6944fd | 229 | { |
cd5bf2a6 RR |
230 | STMT_t FAR *pstmt = (STMT_t FAR *) hstmt; |
231 | HPROC hproc = SQL_NULL_HPROC; | |
232 | ||
233 | int sqlstat = en_00000; | |
234 | RETCODE retcode = SQL_SUCCESS; | |
235 | ||
236 | if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC) | |
237 | { | |
238 | return SQL_INVALID_HANDLE; | |
239 | } | |
240 | ||
241 | /* check arguments */ | |
242 | if (szSqlStr == NULL) | |
243 | { | |
244 | sqlstat = en_S1009; | |
245 | } | |
246 | else if (cbSqlStr < 0 && cbSqlStr != SQL_NTS) | |
247 | { | |
248 | sqlstat = en_S1090; | |
249 | } | |
250 | ||
251 | if (sqlstat != en_00000) | |
252 | { | |
253 | PUSHSQLERR (pstmt->herr, sqlstat); | |
254 | ||
255 | return SQL_ERROR; | |
256 | } | |
257 | ||
258 | /* check state */ | |
259 | if (pstmt->asyn_on == en_NullProc) | |
260 | { | |
261 | switch (pstmt->state) | |
262 | { | |
263 | case en_stmt_fetched: | |
264 | case en_stmt_xfetched: | |
265 | sqlstat = en_24000; | |
266 | break; | |
267 | ||
268 | case en_stmt_needdata: | |
269 | case en_stmt_mustput: | |
270 | case en_stmt_canput: | |
271 | sqlstat = en_S1010; | |
272 | break; | |
273 | ||
274 | default: | |
275 | break; | |
276 | } | |
277 | } | |
278 | else if (pstmt->asyn_on != en_ExecDirect) | |
279 | { | |
280 | sqlstat = en_S1010; | |
281 | } | |
282 | ||
283 | if (sqlstat != en_00000) | |
284 | { | |
285 | PUSHSQLERR (pstmt->herr, sqlstat); | |
286 | ||
287 | return SQL_ERROR; | |
288 | } | |
289 | ||
290 | hproc = _iodbcdm_getproc (pstmt->hdbc, en_ExecDirect); | |
291 | ||
292 | if (hproc == SQL_NULL_HPROC) | |
293 | { | |
294 | PUSHSQLERR (pstmt->herr, en_IM001); | |
295 | ||
296 | return SQL_ERROR; | |
297 | } | |
298 | ||
299 | CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_ExecDirect, | |
300 | (pstmt->dhstmt, szSqlStr, cbSqlStr)) | |
301 | ||
302 | /* stmt state transition */ | |
303 | if (pstmt->asyn_on == en_ExecDirect) | |
304 | { | |
305 | switch (retcode) | |
306 | { | |
307 | case SQL_SUCCESS: | |
308 | case SQL_SUCCESS_WITH_INFO: | |
309 | case SQL_NEED_DATA: | |
310 | case SQL_ERROR: | |
311 | pstmt->asyn_on = en_NullProc; | |
312 | break; | |
313 | ||
314 | case SQL_STILL_EXECUTING: | |
315 | default: | |
316 | return retcode; | |
317 | } | |
318 | } | |
319 | ||
320 | if (pstmt->state <= en_stmt_executed) | |
321 | { | |
322 | switch (retcode) | |
323 | { | |
324 | case SQL_SUCCESS: | |
325 | case SQL_SUCCESS_WITH_INFO: | |
326 | do_cursoropen (hstmt); | |
327 | break; | |
328 | ||
329 | case SQL_NEED_DATA: | |
330 | pstmt->state = en_stmt_needdata; | |
331 | pstmt->need_on = en_ExecDirect; | |
332 | break; | |
333 | ||
334 | case SQL_STILL_EXECUTING: | |
335 | pstmt->asyn_on = en_ExecDirect; | |
336 | break; | |
337 | ||
338 | case SQL_ERROR: | |
339 | pstmt->state = en_stmt_allocated; | |
340 | pstmt->cursor_state = en_stmt_cursor_no; | |
341 | pstmt->prep_state = 0; | |
342 | break; | |
343 | ||
344 | default: | |
345 | break; | |
346 | } | |
347 | } | |
348 | ||
349 | return retcode; | |
1a6944fd RR |
350 | } |
351 | ||
cd5bf2a6 RR |
352 | |
353 | RETCODE SQL_API | |
354 | SQLPutData ( | |
355 | HSTMT hstmt, | |
356 | PTR rgbValue, | |
357 | SDWORD cbValue) | |
1a6944fd | 358 | { |
cd5bf2a6 RR |
359 | STMT_t FAR *pstmt = (STMT_t FAR *) hstmt; |
360 | HPROC hproc; | |
361 | RETCODE retcode; | |
362 | ||
363 | if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC) | |
364 | { | |
365 | return SQL_INVALID_HANDLE; | |
366 | } | |
367 | ||
368 | /* check argument value */ | |
369 | if (rgbValue == NULL && | |
370 | (cbValue != SQL_DEFAULT_PARAM && cbValue != SQL_NULL_DATA)) | |
371 | { | |
372 | PUSHSQLERR (pstmt->herr, en_S1009); | |
373 | ||
374 | return SQL_ERROR; | |
375 | } | |
376 | ||
377 | /* check state */ | |
378 | if (pstmt->asyn_on == en_NullProc) | |
379 | { | |
380 | if (pstmt->state <= en_stmt_xfetched) | |
381 | { | |
382 | PUSHSQLERR (pstmt->herr, en_S1010); | |
383 | ||
384 | return SQL_ERROR; | |
385 | } | |
386 | } | |
387 | else if (pstmt->asyn_on != en_PutData) | |
388 | { | |
389 | PUSHSQLERR (pstmt->herr, en_S1010); | |
390 | ||
391 | return SQL_ERROR; | |
392 | } | |
393 | ||
394 | /* call driver */ | |
395 | hproc = _iodbcdm_getproc (pstmt->hdbc, en_PutData); | |
396 | ||
397 | if (hproc == SQL_NULL_HPROC) | |
398 | { | |
399 | PUSHSQLERR (pstmt->herr, en_IM001); | |
400 | ||
401 | return SQL_ERROR; | |
402 | } | |
403 | ||
404 | CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_PutData, | |
405 | (pstmt->dhstmt, rgbValue, cbValue)) | |
406 | ||
407 | /* state transition */ | |
408 | if (pstmt->asyn_on == en_PutData) | |
409 | { | |
410 | switch (retcode) | |
411 | { | |
412 | case SQL_SUCCESS: | |
413 | case SQL_SUCCESS_WITH_INFO: | |
414 | case SQL_ERROR: | |
415 | pstmt->asyn_on = en_NullProc; | |
416 | break; | |
417 | ||
418 | case SQL_STILL_EXECUTING: | |
419 | default: | |
420 | return retcode; | |
421 | } | |
422 | } | |
423 | ||
424 | /* must in mustput or canput states */ | |
425 | switch (retcode) | |
426 | { | |
427 | case SQL_SUCCESS: | |
428 | case SQL_SUCCESS_WITH_INFO: | |
429 | pstmt->state = en_stmt_canput; | |
430 | break; | |
431 | ||
432 | case SQL_ERROR: | |
433 | switch (pstmt->need_on) | |
434 | { | |
435 | case en_ExecDirect: | |
436 | pstmt->state = en_stmt_allocated; | |
437 | pstmt->need_on = en_NullProc; | |
438 | break; | |
439 | ||
440 | case en_Execute: | |
441 | if (pstmt->prep_state) | |
442 | { | |
443 | pstmt->state = en_stmt_prepared; | |
444 | pstmt->need_on = en_NullProc; | |
445 | } | |
446 | break; | |
447 | ||
448 | case en_SetPos: | |
449 | /* Is this possible ???? */ | |
450 | pstmt->state = en_stmt_xfetched; | |
451 | break; | |
452 | ||
453 | default: | |
454 | break; | |
455 | } | |
456 | break; | |
457 | ||
458 | case SQL_STILL_EXECUTING: | |
459 | pstmt->asyn_on = en_PutData; | |
460 | break; | |
461 | ||
462 | default: | |
463 | break; | |
464 | } | |
465 | ||
466 | return retcode; | |
1a6944fd RR |
467 | } |
468 | ||
cd5bf2a6 RR |
469 | |
470 | RETCODE SQL_API | |
471 | SQLParamData ( | |
472 | HSTMT hstmt, | |
473 | PTR FAR * prgbValue) | |
1a6944fd | 474 | { |
cd5bf2a6 RR |
475 | STMT_t FAR *pstmt = (STMT_t FAR *) hstmt; |
476 | HPROC hproc; | |
477 | RETCODE retcode; | |
478 | ||
479 | if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC) | |
480 | { | |
481 | return SQL_INVALID_HANDLE; | |
482 | } | |
483 | ||
484 | /* check argument */ | |
485 | ||
486 | /* check state */ | |
487 | if (pstmt->asyn_on == en_NullProc) | |
488 | { | |
489 | if (pstmt->state <= en_stmt_xfetched) | |
490 | { | |
491 | PUSHSQLERR (pstmt->herr, en_S1010); | |
492 | ||
493 | return SQL_ERROR; | |
494 | } | |
495 | } | |
496 | else if (pstmt->asyn_on != en_ParamData) | |
497 | { | |
498 | PUSHSQLERR (pstmt->herr, en_S1010); | |
499 | ||
500 | return SQL_ERROR; | |
501 | } | |
502 | ||
503 | /* call driver */ | |
504 | hproc = _iodbcdm_getproc (pstmt->hdbc, en_ParamData); | |
505 | ||
506 | if (hproc == SQL_NULL_HPROC) | |
507 | { | |
508 | PUSHSQLERR (pstmt->herr, en_IM001); | |
509 | ||
510 | return SQL_ERROR; | |
511 | } | |
512 | ||
513 | CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_ParamData, | |
514 | (pstmt->dhstmt, prgbValue)) | |
515 | ||
516 | /* state transition */ | |
517 | if (pstmt->asyn_on == en_ParamData) | |
518 | { | |
519 | switch (retcode) | |
520 | { | |
521 | case SQL_SUCCESS: | |
522 | case SQL_SUCCESS_WITH_INFO: | |
523 | case SQL_ERROR: | |
524 | pstmt->asyn_on = en_NullProc; | |
525 | break; | |
526 | ||
527 | case SQL_STILL_EXECUTING: | |
528 | default: | |
529 | return retcode; | |
530 | } | |
531 | } | |
532 | ||
533 | if (pstmt->state < en_stmt_needdata) | |
534 | { | |
535 | return retcode; | |
536 | } | |
537 | ||
538 | switch (retcode) | |
539 | { | |
540 | case SQL_ERROR: | |
541 | switch (pstmt->need_on) | |
542 | { | |
543 | case en_ExecDirect: | |
544 | pstmt->state = en_stmt_allocated; | |
545 | break; | |
546 | ||
547 | case en_Execute: | |
548 | pstmt->state = en_stmt_prepared; | |
549 | break; | |
550 | ||
551 | case en_SetPos: | |
552 | pstmt->state = en_stmt_xfetched; | |
553 | pstmt->cursor_state | |
554 | = en_stmt_cursor_xfetched; | |
555 | break; | |
556 | ||
557 | default: | |
558 | break; | |
559 | } | |
560 | pstmt->need_on = en_NullProc; | |
561 | break; | |
562 | ||
563 | case SQL_SUCCESS: | |
564 | case SQL_SUCCESS_WITH_INFO: | |
565 | switch (pstmt->state) | |
566 | { | |
567 | case en_stmt_needdata: | |
568 | pstmt->state = en_stmt_mustput; | |
569 | break; | |
570 | ||
571 | case en_stmt_canput: | |
572 | switch (pstmt->need_on) | |
573 | { | |
574 | case en_SetPos: | |
575 | pstmt->state | |
576 | = en_stmt_xfetched; | |
577 | pstmt->cursor_state | |
578 | = en_stmt_cursor_xfetched; | |
579 | break; | |
580 | ||
581 | case en_ExecDirect: | |
582 | case en_Execute: | |
583 | do_cursoropen (hstmt); | |
584 | break; | |
585 | ||
586 | default: | |
587 | break; | |
588 | } | |
589 | break; | |
590 | ||
591 | default: | |
592 | break; | |
593 | } | |
594 | pstmt->need_on = en_NullProc; | |
595 | break; | |
596 | ||
597 | case SQL_NEED_DATA: | |
598 | pstmt->state = en_stmt_mustput; | |
599 | break; | |
600 | ||
601 | default: | |
602 | break; | |
603 | } | |
604 | ||
605 | return retcode; | |
1a6944fd RR |
606 | } |
607 | ||
608 | ||
cd5bf2a6 RR |
609 | RETCODE SQL_API |
610 | SQLNumParams ( | |
611 | HSTMT hstmt, | |
612 | SWORD FAR * pcpar) | |
1a6944fd | 613 | { |
cd5bf2a6 RR |
614 | STMT_t FAR *pstmt = (STMT_t FAR *) hstmt; |
615 | HPROC hproc; | |
616 | RETCODE retcode; | |
617 | ||
618 | if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC) | |
619 | { | |
620 | return SQL_INVALID_HANDLE; | |
621 | } | |
622 | ||
623 | /* check argument */ | |
624 | ||
625 | /* check state */ | |
626 | if (pstmt->asyn_on == en_NullProc) | |
627 | { | |
628 | switch (pstmt->state) | |
629 | { | |
630 | case en_stmt_allocated: | |
631 | case en_stmt_needdata: | |
632 | case en_stmt_mustput: | |
633 | case en_stmt_canput: | |
634 | PUSHSQLERR (pstmt->herr, en_S1010); | |
635 | return SQL_ERROR; | |
636 | ||
637 | default: | |
638 | break; | |
639 | } | |
640 | } | |
641 | else if (pstmt->asyn_on != en_NumParams) | |
642 | { | |
643 | PUSHSQLERR (pstmt->herr, en_S1010); | |
644 | ||
645 | return SQL_ERROR; | |
646 | } | |
647 | ||
648 | /* call driver */ | |
649 | hproc = _iodbcdm_getproc (pstmt->hdbc, en_NumParams); | |
650 | ||
651 | if (hproc == SQL_NULL_HPROC) | |
652 | { | |
653 | PUSHSQLERR (pstmt->herr, en_IM001); | |
654 | ||
655 | return SQL_ERROR; | |
656 | } | |
657 | ||
658 | CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_NumParams, | |
659 | (pstmt->dhstmt, pcpar)) | |
660 | ||
661 | /* state transition */ | |
662 | if (pstmt->asyn_on == en_NumParams) | |
663 | { | |
664 | switch (retcode) | |
665 | { | |
666 | case SQL_SUCCESS: | |
667 | case SQL_SUCCESS_WITH_INFO: | |
668 | case SQL_ERROR: | |
669 | break; | |
670 | ||
671 | default: | |
672 | return retcode; | |
673 | } | |
674 | } | |
675 | ||
676 | if (retcode == SQL_STILL_EXECUTING) | |
677 | { | |
678 | pstmt->asyn_on = en_NumParams; | |
679 | } | |
680 | ||
681 | return retcode; | |
1a6944fd RR |
682 | } |
683 | ||
cd5bf2a6 RR |
684 | |
685 | RETCODE SQL_API | |
686 | SQLDescribeParam ( | |
687 | HSTMT hstmt, | |
688 | UWORD ipar, | |
689 | SWORD FAR * pfSqlType, | |
690 | UDWORD FAR * pcbColDef, | |
691 | SWORD FAR * pibScale, | |
692 | SWORD FAR * pfNullable) | |
1a6944fd | 693 | { |
cd5bf2a6 RR |
694 | STMT_t FAR *pstmt = (STMT_t FAR *) hstmt; |
695 | HPROC hproc; | |
696 | RETCODE retcode; | |
697 | ||
698 | if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC) | |
699 | { | |
700 | return SQL_INVALID_HANDLE; | |
701 | } | |
702 | ||
703 | /* check argument */ | |
704 | if (ipar == 0) | |
705 | { | |
706 | PUSHSQLERR (pstmt->herr, en_S1093); | |
707 | ||
708 | return SQL_ERROR; | |
709 | } | |
710 | ||
711 | /* check state */ | |
712 | if (pstmt->asyn_on == en_NullProc) | |
713 | { | |
714 | switch (pstmt->state) | |
715 | { | |
716 | case en_stmt_allocated: | |
717 | case en_stmt_needdata: | |
718 | case en_stmt_mustput: | |
719 | case en_stmt_canput: | |
720 | PUSHSQLERR (pstmt->herr, en_S1010); | |
721 | return SQL_ERROR; | |
722 | ||
723 | default: | |
724 | break; | |
725 | } | |
726 | } | |
727 | else if (pstmt->asyn_on != en_DescribeParam) | |
728 | { | |
729 | PUSHSQLERR (pstmt->herr, en_S1010); | |
730 | ||
731 | return SQL_ERROR; | |
732 | } | |
733 | ||
734 | /* call driver */ | |
735 | hproc = _iodbcdm_getproc (pstmt->hdbc, en_DescribeParam); | |
736 | ||
737 | if (hproc == SQL_NULL_HPROC) | |
738 | { | |
739 | PUSHSQLERR (pstmt->herr, en_IM001); | |
740 | ||
741 | return SQL_ERROR; | |
742 | } | |
743 | ||
744 | CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_DescribeParam, | |
745 | (pstmt->dhstmt, ipar, pfSqlType, pcbColDef, pibScale, pfNullable)) | |
746 | ||
747 | /* state transition */ | |
748 | if (pstmt->asyn_on == en_DescribeParam) | |
749 | { | |
750 | switch (retcode) | |
751 | { | |
752 | case SQL_SUCCESS: | |
753 | case SQL_SUCCESS_WITH_INFO: | |
754 | case SQL_ERROR: | |
755 | break; | |
756 | ||
757 | default: | |
758 | return retcode; | |
759 | } | |
760 | } | |
761 | ||
762 | if (retcode == SQL_STILL_EXECUTING) | |
763 | { | |
764 | pstmt->asyn_on = en_DescribeParam; | |
765 | } | |
766 | ||
767 | return retcode; | |
1a6944fd | 768 | } |