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1.1 parser 1: /** @file
2: Parser Oracle driver.
3:
4: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
5:
6: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
7:
8: 2001.07.30 using Oracle 8.1.6, tested with Oracle 7.x.x
9: */
1.2 ! parser 10: static const char *RCSId="$Id: parser3oracle.C,v 1.1 2001/08/22 14:02:17 parser Exp $";
1.1 parser 11:
12: #include "config_includes.h"
13:
14: #include "pa_sql_driver.h"
15:
16: #include <oci.h>
17:
18: #define MAX_COLS 500
19: #define MAX_IN_LOBS 5
20: #define MAX_LOB_NAME_LENGTH 100
21: #define MAX_OUT_STRING_LENGTH 4000
22:
23: #define EMPTY_CLOB_FUNC_CALL "empty_clob()"
24:
25: #include "ltdl.h"
26:
27: #define MAX_STRING 0x400
28: #define MAX_NUMBER 20
29:
30: #if _MSC_VER
31: # define snprintf _snprintf
32: # define strcasecmp _stricmp
33: # define strncasecmp _strnicmp
34: #endif
35:
36: #ifndef max
37: inline int max(int a, int b) { return a>b?a:b; }
38: inline int min(int a, int b){ return a<b?a:b; }
39: #endif
40:
41: static char *lsplit(char *string, char delim) {
42: if(string) {
43: char *v=strchr(string, delim);
44: if(v) {
45: *v=0;
46: return v+1;
47: }
48: }
49: return 0;
50: }
51:
52: struct OracleSQL_connection_struct {
53: jmp_buf mark; char error[MAX_STRING];
54: OCIEnv *envhp;
55: OCIServer *srvhp;
56: OCIError *errhp;
57: OCISvcCtx *svchp;
58: OCISession *usrhp;
59: };
60:
61: struct OracleSQL_query_lobs {
62: struct return_rows {
63: struct return_row {
64: OCILobLocator *locator; ub4 len;
65: int ind;
66: ub2 rcode;
67: } *row;
68: int count;
69: };
70: struct cbf_context_struct {
71: SQL_Driver_services *services;
72: OracleSQL_connection_struct *cs;
73: return_rows *rows;
74: };
75: struct Item {
76: const char *name_ptr; size_t name_size;
77: char *data_ptr; size_t data_size;
78: OCILobLocator *locator;
79: OCIBind *bind;
80: return_rows rows;
81: } items[MAX_IN_LOBS];
82: int count;
83: };
84:
85:
86: // forwards
87: void check(
88: SQL_Driver_services& services, OracleSQL_connection_struct &cs,
89: const char *step, sword status);
90: static sb4 cbf_no_data(
91: dvoid *ctxp,
92: OCIBind *bindp,
93: ub4 iter, ub4 index,
94: dvoid **bufpp,
95: ub4 *alenpp,
96: ub1 *piecep,
97: dvoid **indpp);
98: static sb4 cbf_get_data(dvoid *ctxp,
99: OCIBind *bindp,
100: ub4 iter, ub4 index,
101: dvoid **bufpp,
102: ub4 **alenp,
103: ub1 *piecep,
104: dvoid **indpp,
105: ub2 **rcodepp);
106:
107: /**
108: OracleSQL server driver
109: */
110: class OracleSQL_Driver : public SQL_Driver {
111: public:
112:
113: OracleSQL_Driver() : SQL_Driver() {
114: }
115:
116: /// get api version
117: int api_version() { return SQL_DRIVER_API_VERSION; }
118: /// initialize driver by loading sql dynamic link library
119: const char *initialize(const char *dlopen_file_spec) {
120: /* const char *error=dlopen_file_spec?
121: dlink(dlopen_file_spec):"client library column is empty";
122: if(!error) {*/
1.2 ! parser 123: _asm int 3;
1.1 parser 124: OCIInitialize((ub4) OCI_THREADED /*| OCI_OBJECT*/, (dvoid *)0,
125: (dvoid * (*)(void *, unsigned int)) 0,
126: (dvoid * (*)(void*, void*, unsigned int)) 0,
127: (void (*)(void*, void*)) 0 );
128: /*}
129:
130: return error;*/
131: return 0;
132: }
133:
134: /** connect
135: @param used_only_in_connect_url
1.2 ! parser 136: format: @b user:pass@service
1.1 parser 137: */
138: void connect(
139: char *used_only_in_connect_url,
140: SQL_Driver_services& services,
141: void **connection ///< output: OracleSQL_connection_struct *
142: ) {
143: char *user=used_only_in_connect_url;
144: char *service=lsplit(user, '@');
145: char *pwd=lsplit(user, ':');
146:
147: OracleSQL_connection_struct &cs=
148: *(OracleSQL_connection_struct *)services.calloc(sizeof(OracleSQL_connection_struct));
149:
1.2 ! parser 150: if(!(user && pwd && service))
! 151: services._throw("mailformed connect part. must be 'user:pass@service'");
! 152:
1.1 parser 153: if(setjmp(cs.mark))
154: services._throw(cs.error);
155:
156: dvoid *tmp;
157:
1.2 ! parser 158: check(services, cs, "OCIHandleAlloc envhp", OCIHandleAlloc(
! 159: (dvoid *) NULL, (dvoid **) &cs.envhp, (ub4) OCI_HTYPE_ENV,
! 160: 52, (dvoid **) &tmp));
! 161:
! 162: check(services, cs, "OCIEnvInit", OCIEnvInit(
! 163: &cs.envhp, (ub4) OCI_DEFAULT, 21, (dvoid **) &tmp));
! 164:
! 165: check(services, cs, "OCIHandleAlloc errhp", OCIHandleAlloc(
! 166: (dvoid *) cs.envhp, (dvoid **) &cs.errhp, (ub4) OCI_HTYPE_ERROR,
! 167: 52, (dvoid **) &tmp));
! 168: check(services, cs, "OCIHandleAlloc srvhp", OCIHandleAlloc(
! 169: (dvoid *) cs.envhp, (dvoid **) &cs.srvhp, (ub4) OCI_HTYPE_SERVER,
! 170: 52, (dvoid **) &tmp));
! 171:
! 172: check(services, cs, "OCIServerAttach", OCIServerAttach(
! 173: cs.srvhp, cs.errhp, (text *) service, (sb4) strlen(service), (ub4) OCI_DEFAULT));
! 174:
! 175: check(services, cs, "OCIHandleAlloc svchp", OCIHandleAlloc(
! 176: (dvoid *) cs.envhp, (dvoid **) &cs.svchp, (ub4) OCI_HTYPE_SVCCTX,
! 177: 52, (dvoid **) &tmp));
1.1 parser 178:
179: /* set attribute server context in the service context */
1.2 ! parser 180: check(services, cs, "OCIAttrSet server-service", OCIAttrSet(
! 181: (dvoid *) cs.svchp, (ub4) OCI_HTYPE_SVCCTX,
1.1 parser 182: (dvoid *) cs.srvhp, (ub4) 0,
1.2 ! parser 183: (ub4) OCI_ATTR_SERVER, (OCIError *) cs.errhp));
1.1 parser 184:
185: /* allocate a user context handle */
1.2 ! parser 186: check(services, cs, "OCIHandleAlloc usrhp", OCIHandleAlloc(
! 187: (dvoid *)cs.envhp, (dvoid **)&cs.usrhp, (ub4) OCI_HTYPE_SESSION,
! 188: (size_t) 0, (dvoid **) 0));
1.1 parser 189:
1.2 ! parser 190: check(services, cs, "OCIAttrSet user-session", OCIAttrSet(
! 191: (dvoid *)cs.usrhp, (ub4)OCI_HTYPE_SESSION,
1.1 parser 192: (dvoid *)user, (ub4)strlen(user),
1.2 ! parser 193: OCI_ATTR_USERNAME, cs.errhp));
1.1 parser 194:
1.2 ! parser 195: check(services, cs, "OCIAttrSet pwd-session", OCIAttrSet(
! 196: (dvoid *)cs.usrhp, (ub4)OCI_HTYPE_SESSION,
1.1 parser 197: (dvoid *)pwd, (ub4)strlen(pwd),
1.2 ! parser 198: OCI_ATTR_PASSWORD, cs.errhp));
1.1 parser 199:
200: check(services, cs, "OCISessionBegin", OCISessionBegin (cs.svchp, cs.errhp, cs.usrhp,
201: OCI_CRED_RDBMS, OCI_DEFAULT));
202:
1.2 ! parser 203: check(services, cs, "OCIAttrSet service-session", OCIAttrSet(
! 204: (dvoid *)cs.svchp, (ub4)OCI_HTYPE_SVCCTX,
1.1 parser 205: (dvoid *)cs.usrhp, (ub4)0,
1.2 ! parser 206: OCI_ATTR_SESSION, cs.errhp));
1.1 parser 207:
208: *(OracleSQL_connection_struct **)connection=&cs;
209: }
210: void disconnect(SQL_Driver_services& services, void *connection) {
211: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
212:
213: OCISessionEnd(cs.svchp, cs.errhp, cs.usrhp, (ub4)OCI_DEFAULT);
214: OCIServerDetach( cs.srvhp, cs.errhp, (ub4) OCI_DEFAULT );
215: check(services, cs, "OCIHandleFree2", OCIHandleFree((dvoid *) cs.srvhp, (ub4) OCI_HTYPE_SERVER));
216: check(services, cs, "OCIHandleFree3", OCIHandleFree((dvoid *) cs.svchp, (ub4) OCI_HTYPE_SVCCTX));
217: check(services, cs, "OCIHandleFree4", OCIHandleFree((dvoid *) cs.errhp, (ub4) OCI_HTYPE_ERROR));
218: }
219: void commit(SQL_Driver_services& services, void *connection) {
220: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
221:
222: check(services, cs, "commit", OCITransCommit(cs.svchp, cs.errhp, 0));
223: }
224: void rollback(SQL_Driver_services& services, void *connection) {
225: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
226:
227: check(services, cs, "rollback", OCITransRollback(cs.svchp, cs.errhp, 0));
228: }
229:
230: bool ping(SQL_Driver_services&, void *connection) {
231: return false;
232: }
233:
234: unsigned int quote(
235: SQL_Driver_services&, void *,
236: char *to, const char *from, unsigned int length) {
237: /*
238: it's already UNTAINT_TIMES_BIGGER
239: */
240: unsigned int result=length;
241: while(length--) {
242: switch(*from) {
243: case '\'': // "'" -> "''"
244: *to++='\'';
245: break;
246: case '\\': // "\" -> "\\"
247: *to++='\'';
248: break;
249: }
250: *to++=*from++;
251: }
252: return result;
253: }
254: void query(
255: SQL_Driver_services& services, void *connection,
256: const char *astatement, unsigned long offset, unsigned long limit,
257: SQL_Driver_query_event_handlers& handlers) {
258: // _asm int 3;
259: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
260: OracleSQL_query_lobs lobs={{0}, 0};
261: OCIStmt *stmthp=0;
262:
263: bool failed=false;
264: if(setjmp(cs.mark)) {
265: failed=true;
266: goto cleanup;
267: }
268: {
269: const char *statement=preprocess_statement(services, cs,
270: astatement, lobs);
271:
272: dvoid *tmp;
273: check(services, cs, "OCIHandleAlloc STMT", OCIHandleAlloc(
274: (dvoid *) cs.envhp, (dvoid **) &stmthp, (ub4) OCI_HTYPE_STMT,
275: 50, (dvoid **) &tmp));
276: check(services, cs, "syntax",
277: OCIStmtPrepare(stmthp, cs.errhp, (unsigned char *)statement,
278: (ub4) strlen((char *) statement),
279: (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT));
280: {
281: for(int i=0; i<lobs.count; i++) {
282: check(services, cs, "alloc output var desc", OCIDescriptorAlloc(
283: (dvoid *) cs.envhp, (dvoid **)&lobs.items[i].locator,
284: (ub4) OCI_DTYPE_LOB,
285: (size_t) 0, (dvoid **) 0));
286:
287: check(services, cs, "bind output", OCIBindByPos(stmthp,
288: &lobs.items[i].bind, cs.errhp,
289: (ub4) 1+i,
290: (dvoid *)&lobs.items[i].locator,
291: (sword)sizeof (lobs.items[i].locator), SQLT_CLOB, (dvoid *) 0,
292: (ub2 *) 0, (ub2 *) 0, (ub4) 0, (ub4 *) 0, OCI_DATA_AT_EXEC));
293:
294: lobs.items[i].rows.count=0;
295: OracleSQL_query_lobs::cbf_context_struct cbf_context={
296: &services, &cs, &lobs.items[i].rows};
297: check(services, cs, "bind dynamic", OCIBindDynamic(
298: lobs.items[i].bind, cs.errhp,
299: (dvoid *) &cbf_context, cbf_no_data,
300: (dvoid *) &cbf_context, cbf_get_data));
301: }
302: }
303:
304: execute_prepared(services, cs,
305: statement, stmthp, lobs,
306: offset, limit, handlers);
307: }
308: cleanup: // no check call after this point!
309: {
310: for(int i=0; i<lobs.count; i++) {
311: /* free var locator */
312: (void) OCIDescriptorFree((dvoid *) lobs.items[i].locator, (ub4) OCI_DTYPE_LOB);
313:
314: OracleSQL_query_lobs::return_rows *rows=&lobs.items[i].rows;
315: for(int r=0; r<rows->count; r++) {
316: /* free var locator */
317: (void) OCIDescriptorFree((dvoid *) rows->row[r].locator, (ub4) OCI_DTYPE_LOB);
318: }
319: }
320: }
321: if(stmthp)
322: (void) OCIHandleFree((dvoid *) stmthp, (ub4) OCI_HTYPE_STMT);
323:
324: if(failed)
325: services._throw(cs.error);
326: }
327:
328: private: // private funcs
329:
330: const char *preprocess_statement(SQL_Driver_services& services, OracleSQL_connection_struct &cs,
331: const char *astatement, OracleSQL_query_lobs &lobs) {
332: size_t statement_size=strlen(astatement);
333:
334: char *result=(char *)services.malloc(statement_size
335: +MAX_STRING // in case of short 'strings'
336: +11/* returning */+6/* into */+(MAX_LOB_NAME_LENGTH+2/*:, */)*2/*ret into*/*MAX_IN_LOBS
337: +1);
338: const char *o=astatement;
339:
340: // /**xxx**/'literal' -> EMPTY_CLOB_FUNC_CALL
341: char *n=result;
342: while(*o) {
343: if(
344: o[0]=='/' &&
345: o[1]=='*' &&
346: o[2]=='*') { // name start
347: o+=3;
348: const char *name_begin=o;
349: while(*o)
350: if(
351: o[0]=='*' &&
352: o[1]=='*' &&
353: o[2]=='/' &&
354: o[3]=='\'') { // name end
355: const char *name_end=o;
356: o+=4;
357: OracleSQL_query_lobs::Item &item=lobs.items[lobs.count++];
358: item.name_ptr=name_begin; item.name_size=name_end-name_begin;
359: item.data_ptr=(char *)services.malloc(statement_size/*max*/); item.data_size=0;
360:
361: const char *start=o;
362: bool escaped=false;
363: while(*o && !(o[0]=='\'' && o[1]!='\'' && !escaped)) {
364: escaped=*o=='\\' || (o[0]=='\'' && o[1]=='\'');
365: if(escaped) {
366: // write pending, skip "\" or "'"
367: if(size_t size=o-start) {
368: memcpy(item.data_ptr+item.data_size, start, size);
369: item.data_size+=size;
370: }
371: start=++o;
372: } else
373: o++;
374: }
375: if(size_t size=o-start) {
376: memcpy(item.data_ptr+item.data_size, start, size);
377: item.data_size+=size;
378: }
379: if(*o)
380: o++; // skip "'"
381:
382: n+=sprintf(n, EMPTY_CLOB_FUNC_CALL);
383: break;
384: } else
385: o++; // /**skip**/'xxx'
386: } else
387: *n++=*o++;
388: }
389: *n=0;
390:
391: if(lobs.count) {
392: int i;
393: n+=sprintf(n, " returning ");
394: for(i=0; i<lobs.count; i++) {
395: if(i)
396: *n++=',';
397: n+=sprintf(n, "%*s", lobs.items[i].name_size, lobs.items[i].name_ptr);
398: /*memcpy(n, lobs.items[i].name_ptr, lobs.items[i].name_size);
399: n+=lobs.items[i].name_size;*/
400: }
401: n+=sprintf(n, " into ");
402: for(i=0; i<lobs.count; i++) {
403: if(i)
404: *n++='x';
405: n+=sprintf(n, ":%*s", lobs.items[i].name_size, lobs.items[i].name_ptr);
406: /**n++=':';
407: memcpy(n, lobs.items[i].name_ptr, lobs.items[i].name_size);
408: n+=lobs.items[i].name_size;*/
409: }
410: }
411:
412: return result;
413: }
414:
415: void execute_prepared(
416: SQL_Driver_services& services, OracleSQL_connection_struct &cs,
417: const char *statement, OCIStmt *stmthp, OracleSQL_query_lobs &lobs,
418: unsigned long offset, unsigned long limit,
419: SQL_Driver_query_event_handlers& handlers) {
420:
421: ub2 stmt_type=-1; // UNKNOWN // OCI_STMT_SELECT;//
422: /*
423: //gpfs on sun. paf 000818
424: //Zanyway, this is needed before.
425: check(services, cs, "get stmt type", OCIAttrGet(
426: (dvoid *)stmthp, (ub4)OCI_HTYPE_STMT, (ub1 *)&stmt_type,
427: (ub4 *) 0, OCI_ATTR_STMT_TYPE, cs.errhp));
428: */
429: if(strncasecmp(statement, "select", 6)==0)
430: stmt_type=OCI_STMT_SELECT;
431: if(strncasecmp(statement, "insert", 6)==0)
432: stmt_type=OCI_STMT_INSERT;
433: if(strncasecmp(statement, "update", 6)==0)
434: stmt_type=OCI_STMT_UPDATE;
435:
436: int status=OCIStmtExecute(cs.svchp, stmthp, cs.errhp,
437: (ub4) stmt_type==OCI_STMT_SELECT?0:1, (ub4) 0,
438: (OCISnapshot *) NULL,
439: (OCISnapshot *) NULL, (ub4) OCI_DEFAULT);
440:
1.2 ! parser 441: if (status!=OCI_NO_DATA)
1.1 parser 442: check(services, cs, "execute", status);
443:
444: {
445: for(int i=0; i<lobs.count; i++)
446: if(ub4 bytes_to_write=lobs.items[i].data_size) {
447: OracleSQL_query_lobs::return_rows *rows=&lobs.items[i].rows;
448: for(int r=0; r<rows->count; r++) {
449: OCILobLocator *locator=rows->row[r].locator;
450: check(services, cs, "lobwrite", OCILobWrite (
451: cs.svchp, cs.errhp,
452: locator, &bytes_to_write, 1,
453: (dvoid *) lobs.items[i].data_ptr, (ub4)bytes_to_write, OCI_ONE_PIECE,
454: (dvoid *)0, 0, (ub2) 0,
455: (ub1) SQLCS_IMPLICIT));
456: }
457: }
458: }
459:
460: switch(stmt_type) {
461: case OCI_STMT_SELECT:
462: fetch_table(services, cs,
463: stmthp, limit, offset,
464: handlers);
465: break;
466: case OCI_STMT_INSERT:
467: break;
468: default:/*
469: case OCI_STMT_UPDATE:
470: case OCI_STMT_DELETE:
471: case OCI_STMT_CREATE:
472: case OCI_STMT_DROP:
473: case OCI_STMT_ALTER:
474: case OCI_STMT_BEGIN:
475: case OCI_STMT_DECLARE:*/
476: break;
477: }
478: }
479:
480: void fetch_table(SQL_Driver_services& services, OracleSQL_connection_struct &cs,
481: OCIStmt *stmthp, int limit, int offset,
482: SQL_Driver_query_event_handlers& handlers) {
483: OCIParam *mypard;
484: ub2 dtype;
485: text *col_name;
486: sb4 parm_status;
487:
488: struct {
489: ub2 type;
490: char *str;
491: OCILobLocator *var;
492: OCIDefine *def;
493: sb2 indicator;
494: } cols[MAX_COLS];
495: int column_count;
496:
497: for(column_count=0; column_count<MAX_COLS; column_count++) {
498: /* get next descriptor, if there is one */
1.2 ! parser 499: parm_status=OCIParamGet(stmthp, OCI_HTYPE_STMT, cs.errhp, (void **)&mypard,
1.1 parser 500: (ub4) 1+column_count);
501: if(parm_status!=OCI_SUCCESS)
502: break;
503:
504: /* Retrieve the data type attribute */
505: check(services, cs, "get type", OCIAttrGet(
506: (dvoid*) mypard, (ub4) OCI_DTYPE_PARAM,
507: (dvoid*) &dtype, (ub4 *) 0, (ub4) OCI_ATTR_DATA_TYPE,
508: (OCIError *) cs.errhp ));
509:
510: /* Retrieve the column name attribute */
511: ub4 col_name_len;
512: check(services, cs, "get name", OCIAttrGet(
513: (dvoid*) mypard, (ub4) OCI_DTYPE_PARAM,
514: (dvoid**) &col_name, (ub4 *) &col_name_len, (ub4) OCI_ATTR_NAME,
515: (OCIError *) cs.errhp ));
516:
517: {
518: size_t size=(size_t)col_name_len;
519: void *ptr=services.malloc(size);
520: memcpy(ptr, col_name, size);
521: handlers.add_column(ptr, size);
522: }
523:
524: ub2 coerce_type=dtype;
525: sb4 size=0;
526: void *ptr;
527:
528: switch(dtype) {
529: case SQLT_CLOB:
530: {
531: check(services, cs, "alloc output var desc", OCIDescriptorAlloc(
532: (dvoid *) cs.envhp, (dvoid **)(ptr=&cols[column_count].var),
533: (ub4) OCI_DTYPE_LOB,
534: (size_t) 0, (dvoid **) 0));
535:
536: size=0;
537: break;
538: }
539: default:
540: coerce_type=SQLT_STR;
541: ptr=cols[column_count].str=(char *)services.malloc(MAX_OUT_STRING_LENGTH+1);
542: size=MAX_OUT_STRING_LENGTH;
543: break;
544: }
545:
546: cols[column_count].type=coerce_type;
547:
548: OCIDefineByPos(stmthp, &cols[column_count].def, cs.errhp,
549: 1+column_count, (ub1 *) ptr, size,
550: coerce_type, (dvoid *) &cols[column_count].indicator,
551: (ub2 *) 0, (ub2 *) 0, OCI_DEFAULT);
552: }
553:
554: handlers.before_rows();
555:
556: int i;
557: int status;
558: for (int row=0;row<limit+offset;row++) {
1.2 ! parser 559: status=OCIStmtFetch(stmthp, cs.errhp, (ub4) 1, (ub4) OCI_FETCH_NEXT,
1.1 parser 560: (ub4) OCI_DEFAULT);
1.2 ! parser 561: if(status!=0) {
! 562: if ( status!=OCI_NO_DATA )
1.1 parser 563: check(services, cs, "fetch", status);
564: break;
565: }
566: if(row>=offset) {
567: handlers.add_row();
568: for(i=0; i<column_count; i++) {
569: size_t size=0;
570: void *ptr=0;
571: if(cols[i].indicator==0) switch(cols[i].type) {
572: case SQLT_CLOB:
573: {
1.2 ! parser 574: ub4 amtp=4096000000UL;
! 575: ub4 offset=1;
! 576: ub4 loblen=0;
1.1 parser 577: OCILobLocator *var=(OCILobLocator *)cols[i].var;
578: (void) OCILobGetLength(cs.svchp, cs.errhp, var, &loblen);
579: if(loblen) {
580: size=(size_t)loblen;
581: ptr=services.malloc(size);
582: check(services, cs, "lobread", OCILobRead(cs.svchp, cs.errhp,
583: var, &amtp, offset, (dvoid *) ptr,
584: loblen, (dvoid *)0,
585: 0,
586: (ub2) 0, (ub1) SQLCS_IMPLICIT));
587: }
588: break;
589: }
590: default:
591: const char *str=cols[i].str;
592: size=strlen(str);
593: ptr=services.malloc(size);
594: memcpy(ptr, str, size);
595: break;
596: }
597: handlers.add_row_cell(ptr, size);
598: }
599: }
600: }
601:
602: for(i=0; i<column_count; i++) {
603: switch(cols[i].type) {
604: case SQLT_CLOB:
605: /* free var locator */
606: (void) OCIDescriptorFree((dvoid *) cols[i].var, (ub4) OCI_DTYPE_LOB);
607: break;
608: default:
609: break;
610: }
611: }
612: }
613:
614: private: // conn client library funcs
615:
616: // typedef void (*t_PQfinish)(PGconn *conn); t_PQfinish PQfinish;
617:
618: private: // conn client library funcs linking
619:
620: const char *dlink(const char *dlopen_file_spec) {
621: lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
622: if(!handle)
623: return "can not open the dynamic link module";
624:
625: #define DSLINK(name, action) \
626: name=(t_##name)lt_dlsym(handle, #name); \
627: if(!name) \
628: action;
629:
630: #define DLINK(name) DSLINK(name, return "function " #name " was not found")
631:
632: // DLINK(PQfinish);
633:
634: return 0;
635: }
636:
637: };
638:
639: void check(
640: SQL_Driver_services& services, OracleSQL_connection_struct &cs,
641: const char *step, sword status) {
642:
1.2 ! parser 643: char reason[MAX_STRING/2];
1.1 parser 644: const char *msg=0;
645:
646: switch (status) {
647: case OCI_SUCCESS:
648: // hurrah
649: return;
650: /*
651: case OCI_ERROR:
652: {
1.2 ! parser 653: sb4 errcode=0;
1.1 parser 654: (void) OCIErrorGet((dvoid *)cs.errhp, (ub4) 1, (text *) NULL, &errcode,
655: reason, (ub4) sizeof(reason), OCI_HTYPE_ERROR);
656: reason[sizeof(reason)-1]=0;
657: msg=reason;
658: break;
659: }
660: case OCI_SUCCESS_WITH_INFO:
661: msg="OCI_SUCCESS_WITH_INFO"; break;
662: case OCI_NEED_DATA:
663: msg="OCI_NEED_DATA"; break;
664: case OCI_NO_DATA:
665: msg="OCI_NODATA"; break;
666: case OCI_INVALID_HANDLE:
667: msg="OCI_INVALID_HANDLE"; break;
668: case OCI_STILL_EXECUTING:
669: msg="OCI_STILL_EXECUTE"; break;
670: case OCI_CONTINUE:
671: msg="OCI_CONTINUE"; break;
672: */
673: }
1.2 ! parser 674: if(!msg) {
! 675: sb4 errcode=0;
! 676: if(OCIErrorGet((dvoid *)cs.errhp, (ub4) 1, (text *) NULL, &errcode,
! 677: (text *) reason, (ub4) sizeof(reason), OCI_HTYPE_ERROR)==OCI_SUCCESS)
! 678: msg=reason;
! 679: else
! 680: msg="UNKNOWN";
! 681: }
1.1 parser 682:
1.2 ! parser 683: snprintf(cs.error, sizeof(cs.error), "%s error - %s (%d)",
1.1 parser 684: step, msg, (int)status);
685: longjmp(cs.mark, 1);
686: }
687:
688:
689: /* ----------------------------------------------------------------- */
690: /* Intbind callback that does not do any data input. */
691: /* ----------------------------------------------------------------- */
692: static sb4 cbf_no_data(
693: dvoid *ctxp,
694: OCIBind *bindp,
695: ub4 iter, ub4 index,
696: dvoid **bufpp,
697: ub4 *alenpp,
698: ub1 *piecep,
699: dvoid **indpp) {
1.2 ! parser 700: *bufpp=(dvoid *) 0;
! 701: *alenpp=0;
! 702: static sb2 null_ind=-1;
! 703: *indpp=(dvoid *) &null_ind;
! 704: *piecep=OCI_ONE_PIECE;
1.1 parser 705:
706: return OCI_CONTINUE;
707: }
708:
709: /* ----------------------------------------------------------------- */
710: /* Outbind callback for returning data. */
711: /* ----------------------------------------------------------------- */
712: static sb4 cbf_get_data(dvoid *ctxp,
713: OCIBind *bindp,
714: ub4 iter, ub4 index,
715: dvoid **bufpp,
716: ub4 **alenp,
717: ub1 *piecep,
718: dvoid **indpp,
719: ub2 **rcodepp) {
720: OracleSQL_query_lobs::cbf_context_struct &context=
721: *(OracleSQL_query_lobs::cbf_context_struct *)ctxp;
722:
1.2 ! parser 723: if (index==0) {
! 724: static ub4 rows=0;
1.1 parser 725: (void) OCIAttrGet((CONST dvoid *) bindp, OCI_HTYPE_BIND, (dvoid *)&rows,
726: (ub4 *)sizeof(ub2), OCI_ATTR_ROWS_RETURNED, context.cs->errhp);
1.2 ! parser 727: context.rows->count=(ub2)rows;
! 728: context.rows->row=(OracleSQL_query_lobs::return_rows::return_row *)
1.1 parser 729: context.services->malloc(sizeof(OracleSQL_query_lobs::return_rows::return_row)*rows);
730: }
731:
732: OracleSQL_query_lobs::return_rows::return_row &var=context.rows->row[index];
733:
734: check(*context.services, *context.cs, "alloc output var desc dynamic", OCIDescriptorAlloc(
735: (dvoid *) context.cs->envhp, (dvoid **)&var.locator,
736: (ub4) OCI_DTYPE_LOB,
737: (size_t) 0, (dvoid **) 0));
738:
1.2 ! parser 739: *bufpp=var.locator;
! 740: *alenp=&var.len;
! 741: *indpp=(dvoid *) &var.ind;
! 742: *piecep=OCI_ONE_PIECE;
! 743: *rcodepp=&var.rcode;
1.1 parser 744:
745: return OCI_CONTINUE;
746: }
747:
748:
749: extern "C" SQL_Driver *create() {
750: return new OracleSQL_Driver();
751: }