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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: */
1.5 ! parser 10: static const char *RCSId="$Id: parser3oracle.C,v 1.4 2001/08/23 11:08:52 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);
1.3 parser 106: void tolower(char *out, const char *in, size_t size);
1.1 parser 107:
108: /**
109: OracleSQL server driver
110: */
111: class OracleSQL_Driver : public SQL_Driver {
112: public:
113:
114: OracleSQL_Driver() : SQL_Driver() {
115: }
116:
117: /// get api version
118: int api_version() { return SQL_DRIVER_API_VERSION; }
119: /// initialize driver by loading sql dynamic link library
120: const char *initialize(const char *dlopen_file_spec) {
121: /* const char *error=dlopen_file_spec?
122: dlink(dlopen_file_spec):"client library column is empty";
123: if(!error) {*/
1.4 parser 124: OCIInitialize((ub4)OCI_THREADED, (dvoid *)0,
1.5 ! parser 125: (dvoid * (*)(void *, unsigned int))0,
! 126: (dvoid * (*)(void*, void*, unsigned int))0,
! 127: (void (*)(void*, void*))0 );
1.1 parser 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))
1.3 parser 151: services._throw("mailformed connect part, must be 'user:pass@service'");
1.2 parser 152:
1.1 parser 153: if(setjmp(cs.mark))
154: services._throw(cs.error);
155:
1.3 parser 156: // Allocate and initialize OCIError handle, attempt #1
157: /*
158: grabbed from sample
159: /server.804/a58234/oci_func.htm#446192
160: but doc
161: /server.804/a58234/oci_func.htm#446100
162: doesnt have this param listed as allowed
163: 8.1.6 client library barks as OCI_INVALID_HANDLE
164: and debugging revealed that OCI_HTYPE_ENV param value is invalid
165: later in doc
166: /server.804/a58234/oci_func.htm#446192
167: on OCIEnvInit thay say
168: "No changes are done to an already initialized handle"
169: think, this is some sort of backward compatibility wonder.
170: leaving as it is, and without check()
171: */
172: OCIHandleAlloc((dvoid *) NULL, (dvoid **) &cs.envhp, (ub4)OCI_HTYPE_ENV, 0, 0);
173: // Initialize an environment handle, attempt #2
1.4 parser 174: check(services, cs, "EnvInit", OCIEnvInit(
1.3 parser 175: &cs.envhp, (ub4)OCI_DEFAULT, 0, 0));
176: // Allocate and initialize OCIError handle
1.4 parser 177: check(services, cs, "HandleAlloc errhp", OCIHandleAlloc(
1.3 parser 178: (dvoid *)cs.envhp, (dvoid **) &cs.errhp, (ub4)OCI_HTYPE_ERROR, 0, 0));
179: // Allocate and initialize OCIServer handle
1.4 parser 180: check(services, cs, "HandleAlloc srvhp", OCIHandleAlloc(
1.3 parser 181: (dvoid *)cs.envhp, (dvoid **) &cs.srvhp, (ub4)OCI_HTYPE_SERVER, 0, 0));
182: // Attach to a 'service'; initialize server context handle
1.4 parser 183: check(services, cs, "ServerAttach", OCIServerAttach(
1.3 parser 184: cs.srvhp, cs.errhp, (text *) service, (sb4) strlen(service), (ub4)OCI_DEFAULT));
185: // Allocate and initialize OCISvcCtx handle
1.4 parser 186: check(services, cs, "HandleAlloc svchp", OCIHandleAlloc(
1.3 parser 187: (dvoid *)cs.envhp, (dvoid **) &cs.svchp, (ub4)OCI_HTYPE_SVCCTX, 0, 0));
188: // set attribute server context in the service context
1.4 parser 189: check(services, cs, "AttrSet server-service", OCIAttrSet(
1.3 parser 190: (dvoid *)cs.svchp, (ub4)OCI_HTYPE_SVCCTX,
1.5 ! parser 191: (dvoid *)cs.srvhp, (ub4)0,
1.3 parser 192: (ub4)OCI_ATTR_SERVER, (OCIError *)cs.errhp));
193: // allocate a user context handle
1.4 parser 194: check(services, cs, "HandleAlloc usrhp", OCIHandleAlloc(
1.3 parser 195: (dvoid *)cs.envhp, (dvoid **)&cs.usrhp, (ub4)OCI_HTYPE_SESSION, 0, 0));
196: // set 'user' name
1.4 parser 197: check(services, cs, "AttrSet user-session", OCIAttrSet(
1.2 parser 198: (dvoid *)cs.usrhp, (ub4)OCI_HTYPE_SESSION,
1.1 parser 199: (dvoid *)user, (ub4)strlen(user),
1.3 parser 200: OCI_ATTR_USERNAME, cs.errhp));
201: // set 'pwd' password
1.4 parser 202: check(services, cs, "AttrSet pwd-session", OCIAttrSet(
1.2 parser 203: (dvoid *)cs.usrhp, (ub4)OCI_HTYPE_SESSION,
1.1 parser 204: (dvoid *)pwd, (ub4)strlen(pwd),
1.2 parser 205: OCI_ATTR_PASSWORD, cs.errhp));
1.3 parser 206: // Authenticate a user
1.4 parser 207: check(services, cs, "SessionBegin", OCISessionBegin(
1.3 parser 208: cs.svchp, cs.errhp, cs.usrhp,
1.1 parser 209: OCI_CRED_RDBMS, OCI_DEFAULT));
1.3 parser 210: // remember connection in session
1.4 parser 211: check(services, cs, "AttrSet service-session", OCIAttrSet(
1.2 parser 212: (dvoid *)cs.svchp, (ub4)OCI_HTYPE_SVCCTX,
1.1 parser 213: (dvoid *)cs.usrhp, (ub4)0,
1.2 parser 214: OCI_ATTR_SESSION, cs.errhp));
1.1 parser 215:
1.3 parser 216: // return created connection
1.1 parser 217: *(OracleSQL_connection_struct **)connection=&cs;
218: }
219: void disconnect(SQL_Driver_services& services, void *connection) {
220: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
1.4 parser 221: if(setjmp(cs.mark))
222: services._throw(cs.error);
1.1 parser 223:
1.3 parser 224: // Terminate a user session
1.4 parser 225: check(services, cs, "SessionEnd", OCISessionEnd(
1.3 parser 226: cs.svchp, cs.errhp, cs.usrhp, (ub4)OCI_DEFAULT));
227: // Detach from a server; uninitialize server context handle
1.4 parser 228: check(services, cs, "ServerDetach", OCIServerDetach(
1.3 parser 229: cs.srvhp, cs.errhp, (ub4)OCI_DEFAULT));
230: // Free a previously allocated handle
1.4 parser 231: check(services, cs, "HandleFree srvhp", OCIHandleFree(
1.3 parser 232: (dvoid *)cs.srvhp, (ub4)OCI_HTYPE_SERVER));
1.4 parser 233: check(services, cs, "HandleFree svchp", OCIHandleFree(
1.3 parser 234: (dvoid *)cs.svchp, (ub4)OCI_HTYPE_SVCCTX));
1.4 parser 235: check(services, cs, "HandleFree errhp", OCIHandleFree(
1.3 parser 236: (dvoid *)cs.errhp, (ub4)OCI_HTYPE_ERROR)); cs.errhp=0;
1.4 parser 237: check(services, cs, "HandleFree envhp", OCIHandleFree(
1.3 parser 238: (dvoid *)cs.envhp, (ub4)OCI_HTYPE_ENV));
1.1 parser 239: }
240: void commit(SQL_Driver_services& services, void *connection) {
241: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
1.4 parser 242: if(setjmp(cs.mark))
243: services._throw(cs.error);
1.1 parser 244:
245: check(services, cs, "commit", OCITransCommit(cs.svchp, cs.errhp, 0));
246: }
247: void rollback(SQL_Driver_services& services, void *connection) {
248: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
1.4 parser 249: if(setjmp(cs.mark))
250: services._throw(cs.error);
1.1 parser 251:
252: check(services, cs, "rollback", OCITransRollback(cs.svchp, cs.errhp, 0));
253: }
254:
255: bool ping(SQL_Driver_services&, void *connection) {
1.4 parser 256: // maybe OCIServerVersion?
257: return true;
1.1 parser 258: }
259:
260: unsigned int quote(
261: SQL_Driver_services&, void *,
262: char *to, const char *from, unsigned int length) {
263: /*
264: it's already UNTAINT_TIMES_BIGGER
265: */
266: unsigned int result=length;
267: while(length--) {
268: switch(*from) {
269: case '\'': // "'" -> "''"
270: *to++='\'';
271: break;
272: case '\\': // "\" -> "\\"
273: *to++='\'';
274: break;
275: }
276: *to++=*from++;
277: }
278: return result;
279: }
280: void query(
281: SQL_Driver_services& services, void *connection,
282: const char *astatement, unsigned long offset, unsigned long limit,
283: SQL_Driver_query_event_handlers& handlers) {
284: // _asm int 3;
285: OracleSQL_connection_struct &cs=*(OracleSQL_connection_struct *)connection;
286: OracleSQL_query_lobs lobs={{0}, 0};
287: OCIStmt *stmthp=0;
288:
289: bool failed=false;
290: if(setjmp(cs.mark)) {
291: failed=true;
292: goto cleanup;
293: }
294: {
295: const char *statement=preprocess_statement(services, cs,
296: astatement, lobs);
297:
1.4 parser 298: check(services, cs, "HandleAlloc STMT", OCIHandleAlloc(
1.3 parser 299: (dvoid *)cs.envhp, (dvoid **) &stmthp, (ub4)OCI_HTYPE_STMT, 0, 0));
1.1 parser 300: check(services, cs, "syntax",
301: OCIStmtPrepare(stmthp, cs.errhp, (unsigned char *)statement,
302: (ub4) strlen((char *) statement),
1.3 parser 303: (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));
1.1 parser 304: {
305: for(int i=0; i<lobs.count; i++) {
306: check(services, cs, "alloc output var desc", OCIDescriptorAlloc(
1.3 parser 307: (dvoid *)cs.envhp, (dvoid **)&lobs.items[i].locator, (ub4)OCI_DTYPE_LOB, 0, 0));
1.1 parser 308:
309: check(services, cs, "bind output", OCIBindByPos(stmthp,
310: &lobs.items[i].bind, cs.errhp,
1.5 ! parser 311: (ub4)1+i,
1.1 parser 312: (dvoid *)&lobs.items[i].locator,
1.5 ! parser 313: (sword)sizeof (lobs.items[i].locator), SQLT_CLOB, (dvoid *)0,
! 314: (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DATA_AT_EXEC));
1.1 parser 315:
316: lobs.items[i].rows.count=0;
317: OracleSQL_query_lobs::cbf_context_struct cbf_context={
318: &services, &cs, &lobs.items[i].rows};
319: check(services, cs, "bind dynamic", OCIBindDynamic(
320: lobs.items[i].bind, cs.errhp,
321: (dvoid *) &cbf_context, cbf_no_data,
322: (dvoid *) &cbf_context, cbf_get_data));
323: }
324: }
325:
326: execute_prepared(services, cs,
327: statement, stmthp, lobs,
328: offset, limit, handlers);
329: }
330: cleanup: // no check call after this point!
331: {
332: for(int i=0; i<lobs.count; i++) {
333: /* free var locator */
1.4 parser 334: OCIDescriptorFree((dvoid *) lobs.items[i].locator, (ub4)OCI_DTYPE_LOB);
1.1 parser 335:
336: OracleSQL_query_lobs::return_rows *rows=&lobs.items[i].rows;
337: for(int r=0; r<rows->count; r++) {
338: /* free var locator */
1.4 parser 339: OCIDescriptorFree((dvoid *) rows->row[r].locator, (ub4)OCI_DTYPE_LOB);
1.1 parser 340: }
341: }
342: }
343: if(stmthp)
1.4 parser 344: OCIHandleFree((dvoid *) stmthp, (ub4)OCI_HTYPE_STMT);
1.1 parser 345:
346: if(failed)
347: services._throw(cs.error);
348: }
349:
350: private: // private funcs
351:
352: const char *preprocess_statement(SQL_Driver_services& services, OracleSQL_connection_struct &cs,
353: const char *astatement, OracleSQL_query_lobs &lobs) {
354: size_t statement_size=strlen(astatement);
355:
356: char *result=(char *)services.malloc(statement_size
357: +MAX_STRING // in case of short 'strings'
358: +11/* returning */+6/* into */+(MAX_LOB_NAME_LENGTH+2/*:, */)*2/*ret into*/*MAX_IN_LOBS
359: +1);
360: const char *o=astatement;
361:
362: // /**xxx**/'literal' -> EMPTY_CLOB_FUNC_CALL
363: char *n=result;
364: while(*o) {
365: if(
366: o[0]=='/' &&
367: o[1]=='*' &&
368: o[2]=='*') { // name start
369: o+=3;
370: const char *name_begin=o;
371: while(*o)
372: if(
373: o[0]=='*' &&
374: o[1]=='*' &&
375: o[2]=='/' &&
376: o[3]=='\'') { // name end
377: const char *name_end=o;
378: o+=4;
379: OracleSQL_query_lobs::Item &item=lobs.items[lobs.count++];
380: item.name_ptr=name_begin; item.name_size=name_end-name_begin;
381: item.data_ptr=(char *)services.malloc(statement_size/*max*/); item.data_size=0;
382:
383: const char *start=o;
384: bool escaped=false;
385: while(*o && !(o[0]=='\'' && o[1]!='\'' && !escaped)) {
386: escaped=*o=='\\' || (o[0]=='\'' && o[1]=='\'');
387: if(escaped) {
388: // write pending, skip "\" or "'"
389: if(size_t size=o-start) {
390: memcpy(item.data_ptr+item.data_size, start, size);
391: item.data_size+=size;
392: }
393: start=++o;
394: } else
395: o++;
396: }
397: if(size_t size=o-start) {
398: memcpy(item.data_ptr+item.data_size, start, size);
399: item.data_size+=size;
400: }
401: if(*o)
402: o++; // skip "'"
403:
404: n+=sprintf(n, EMPTY_CLOB_FUNC_CALL);
405: break;
406: } else
407: o++; // /**skip**/'xxx'
408: } else
409: *n++=*o++;
410: }
411: *n=0;
412:
413: if(lobs.count) {
414: int i;
415: n+=sprintf(n, " returning ");
416: for(i=0; i<lobs.count; i++) {
417: if(i)
418: *n++=',';
419: n+=sprintf(n, "%*s", lobs.items[i].name_size, lobs.items[i].name_ptr);
420: /*memcpy(n, lobs.items[i].name_ptr, lobs.items[i].name_size);
421: n+=lobs.items[i].name_size;*/
422: }
423: n+=sprintf(n, " into ");
424: for(i=0; i<lobs.count; i++) {
425: if(i)
426: *n++='x';
427: n+=sprintf(n, ":%*s", lobs.items[i].name_size, lobs.items[i].name_ptr);
428: /**n++=':';
429: memcpy(n, lobs.items[i].name_ptr, lobs.items[i].name_size);
430: n+=lobs.items[i].name_size;*/
431: }
432: }
433:
434: return result;
435: }
436:
437: void execute_prepared(
438: SQL_Driver_services& services, OracleSQL_connection_struct &cs,
439: const char *statement, OCIStmt *stmthp, OracleSQL_query_lobs &lobs,
440: unsigned long offset, unsigned long limit,
441: SQL_Driver_query_event_handlers& handlers) {
442:
443: ub2 stmt_type=-1; // UNKNOWN // OCI_STMT_SELECT;//
444: /*
445: //gpfs on sun. paf 000818
446: //Zanyway, this is needed before.
447: check(services, cs, "get stmt type", OCIAttrGet(
448: (dvoid *)stmthp, (ub4)OCI_HTYPE_STMT, (ub1 *)&stmt_type,
1.5 ! parser 449: (ub4 *)0, OCI_ATTR_STMT_TYPE, cs.errhp));
1.1 parser 450: */
451: if(strncasecmp(statement, "select", 6)==0)
452: stmt_type=OCI_STMT_SELECT;
1.3 parser 453: else if(strncasecmp(statement, "insert", 6)==0)
1.1 parser 454: stmt_type=OCI_STMT_INSERT;
1.3 parser 455: else if(strncasecmp(statement, "update", 6)==0)
1.1 parser 456: stmt_type=OCI_STMT_UPDATE;
457:
458: int status=OCIStmtExecute(cs.svchp, stmthp, cs.errhp,
1.5 ! parser 459: (ub4) stmt_type==OCI_STMT_SELECT?0:1, (ub4)0,
1.1 parser 460: (OCISnapshot *) NULL,
1.3 parser 461: (OCISnapshot *) NULL, (ub4)OCI_DEFAULT);
1.1 parser 462:
1.3 parser 463: if(status!=OCI_NO_DATA)
1.1 parser 464: check(services, cs, "execute", status);
465:
466: {
467: for(int i=0; i<lobs.count; i++)
468: if(ub4 bytes_to_write=lobs.items[i].data_size) {
469: OracleSQL_query_lobs::return_rows *rows=&lobs.items[i].rows;
470: for(int r=0; r<rows->count; r++) {
471: OCILobLocator *locator=rows->row[r].locator;
472: check(services, cs, "lobwrite", OCILobWrite (
473: cs.svchp, cs.errhp,
474: locator, &bytes_to_write, 1,
475: (dvoid *) lobs.items[i].data_ptr, (ub4)bytes_to_write, OCI_ONE_PIECE,
1.5 ! parser 476: (dvoid *)0, 0, (ub2)0,
1.1 parser 477: (ub1) SQLCS_IMPLICIT));
478: }
479: }
480: }
481:
482: switch(stmt_type) {
483: case OCI_STMT_SELECT:
484: fetch_table(services, cs,
1.3 parser 485: stmthp, offset, limit,
1.1 parser 486: handlers);
487: break;
1.5 ! parser 488: default:/*
1.1 parser 489: case OCI_STMT_INSERT:
490: case OCI_STMT_UPDATE:
491: case OCI_STMT_DELETE:
492: case OCI_STMT_CREATE:
493: case OCI_STMT_DROP:
494: case OCI_STMT_ALTER:
495: case OCI_STMT_BEGIN:
496: case OCI_STMT_DECLARE:*/
497: break;
498: }
499: }
500:
501: void fetch_table(SQL_Driver_services& services, OracleSQL_connection_struct &cs,
1.3 parser 502: OCIStmt *stmthp, unsigned long offset, unsigned long limit,
1.1 parser 503: SQL_Driver_query_event_handlers& handlers) {
1.3 parser 504: // todo another set/longjump
1.1 parser 505: OCIParam *mypard;
506: ub2 dtype;
507: text *col_name;
508:
509: struct {
510: ub2 type;
511: char *str;
512: OCILobLocator *var;
513: OCIDefine *def;
514: sb2 indicator;
1.4 parser 515: } cols[MAX_COLS]={0};
516: int column_count=0;
1.1 parser 517:
1.4 parser 518: bool failed=false;
519: jmp_buf saved_mark; memcpy(saved_mark, cs.mark, sizeof(jmp_buf));
520: if(setjmp(cs.mark)) {
521: failed=true;
522: goto cleanup;
523: }
524: {
525: // idea of preincrementing is that at error time all handles would free up
1.5 ! parser 526: while(++column_count<=MAX_COLS) {
1.4 parser 527: /* get next descriptor, if there is one */
528: if(OCIParamGet(stmthp, OCI_HTYPE_STMT, cs.errhp, (void **)&mypard,
529: (ub4) column_count)!=OCI_SUCCESS)
530: break;
531:
532: /* Retrieve the data type attribute */
533: check(services, cs, "get type", OCIAttrGet(
534: (dvoid*) mypard, (ub4)OCI_DTYPE_PARAM,
1.5 ! parser 535: (dvoid*) &dtype, (ub4 *)0, (ub4)OCI_ATTR_DATA_TYPE,
1.4 parser 536: (OCIError *)cs.errhp));
537:
538: /* Retrieve the column name attribute */
539: ub4 col_name_len;
540: check(services, cs, "get name", OCIAttrGet(
541: (dvoid*) mypard, (ub4)OCI_DTYPE_PARAM,
542: (dvoid**) &col_name, (ub4 *) &col_name_len, (ub4)OCI_ATTR_NAME,
543: (OCIError *)cs.errhp));
544:
1.1 parser 545: {
1.4 parser 546: size_t size=(size_t)col_name_len;
547: char *ptr=(char *)services.malloc(size);
548: tolower(ptr, (char *)col_name, size);
549: handlers.add_column(ptr, size);
550: }
551:
552: ub2 coerce_type=dtype;
553: sb4 size=0;
554: void *ptr;
555:
556: switch(dtype) {
557: case SQLT_CLOB:
558: {
559: check(services, cs, "alloc output var desc", OCIDescriptorAlloc(
560: (dvoid *)cs.envhp, (dvoid **)(ptr=&cols[column_count-1].var),
561: (ub4)OCI_DTYPE_LOB,
1.5 ! parser 562: 0, (dvoid **)0));
1.4 parser 563:
564: size=0;
565: break;
566: }
567: default:
568: coerce_type=SQLT_STR;
569: ptr=cols[column_count-1].str=(char *)services.malloc(MAX_OUT_STRING_LENGTH+1);
570: size=MAX_OUT_STRING_LENGTH;
1.1 parser 571: break;
572: }
1.4 parser 573:
574: cols[column_count-1].type=coerce_type;
575:
576: check(services, cs, "DefineByPos", OCIDefineByPos(
577: stmthp, &cols[column_count-1].def, cs.errhp,
578: column_count, (ub1 *) ptr, size,
579: coerce_type, (dvoid *) &cols[column_count-1].indicator,
1.5 ! parser 580: (ub2 *)0, (ub2 *)0, OCI_DEFAULT));
1.1 parser 581: }
1.4 parser 582:
583: handlers.before_rows();
584:
1.5 ! parser 585: for(unsigned long row=0; !limit||row<limit+offset; row++) {
! 586: sword status=OCIStmtFetch(stmthp, cs.errhp, (ub4)1, (ub4)OCI_FETCH_NEXT,
1.4 parser 587: (ub4)OCI_DEFAULT);
588: if(status!=OCI_SUCCESS) {
589: if(status!=OCI_NO_DATA)
590: check(services, cs, "fetch", status);
591: break;
592: }
593: if(row>=offset) {
594: handlers.add_row();
595: for(int i=0; i<column_count; i++) {
596: size_t size;
597: void *ptr;
598: if(cols[i].indicator) { // NULL?
599: size=0;
600: ptr=0;
601: } else
602: switch(cols[i].type) {
603: case SQLT_CLOB:
604: {
605: ub4 amtp=4096000000UL;
606: ub4 offset=1;
607: ub4 loblen=0;
608: OCILobLocator *var=(OCILobLocator *)cols[i].var;
609: OCILobGetLength(cs.svchp, cs.errhp, var, &loblen);
610: if(loblen) {
611: size=(size_t)loblen;
612: ptr=services.malloc(size);
613: check(services, cs, "lobread", OCILobRead(cs.svchp, cs.errhp,
614: var, &amtp, offset, (dvoid *) ptr,
615: loblen, (dvoid *)0,
616: 0,
1.5 ! parser 617: (ub2)0, (ub1) SQLCS_IMPLICIT));
1.4 parser 618: }
619: break;
620: }
621: default:
622: const char *str=cols[i].str;
623: size=strlen(str);
1.1 parser 624: ptr=services.malloc(size);
1.4 parser 625: memcpy(ptr, str, size);
626: break;
1.1 parser 627: }
1.4 parser 628: handlers.add_row_cell(ptr, size);
1.1 parser 629: }
630: }
631: }
632: }
633:
1.4 parser 634: cleanup: // no check call after this point!
1.3 parser 635: for(int i=0; i<column_count; i++) {
1.1 parser 636: switch(cols[i].type) {
637: case SQLT_CLOB:
638: /* free var locator */
1.4 parser 639: OCIDescriptorFree((dvoid *) cols[i].var, (ub4)OCI_DTYPE_LOB);
1.1 parser 640: break;
641: default:
642: break;
643: }
644: }
1.4 parser 645:
646: if(failed) // need rethrow?
1.5 ! parser 647: longjmp(saved_mark, 1);
1.1 parser 648: }
649:
650: private: // conn client library funcs
651:
652: // typedef void (*t_PQfinish)(PGconn *conn); t_PQfinish PQfinish;
653:
654: private: // conn client library funcs linking
655:
656: const char *dlink(const char *dlopen_file_spec) {
657: lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
658: if(!handle)
659: return "can not open the dynamic link module";
660:
661: #define DSLINK(name, action) \
662: name=(t_##name)lt_dlsym(handle, #name); \
663: if(!name) \
664: action;
665:
666: #define DLINK(name) DSLINK(name, return "function " #name " was not found")
667:
668: // DLINK(PQfinish);
669:
670: return 0;
671: }
672:
673: };
674:
675: void check(
676: SQL_Driver_services& services, OracleSQL_connection_struct &cs,
677: const char *step, sword status) {
678:
1.4 parser 679: const char *msg;
1.2 parser 680: char reason[MAX_STRING/2];
1.1 parser 681:
682: switch (status) {
683: case OCI_SUCCESS:
1.4 parser 684: return; // hurrah
1.1 parser 685: case OCI_ERROR:
686: {
1.4 parser 687: sb4 errcode;
1.5 ! parser 688: if(OCIErrorGet((dvoid *)cs.errhp, (ub4)1, (text *) NULL, &errcode,
1.4 parser 689: (text *) reason, (ub4) sizeof(reason), OCI_HTYPE_ERROR)==OCI_SUCCESS)
690: msg=reason;
691: else
692: msg="[can not get error description]";
1.1 parser 693: }
694: case OCI_SUCCESS_WITH_INFO:
1.4 parser 695: msg="SUCCESS_WITH_INFO"; break;
1.1 parser 696: case OCI_NEED_DATA:
1.4 parser 697: msg="NEED_DATA"; break;
1.1 parser 698: case OCI_NO_DATA:
1.4 parser 699: msg="NODATA"; break;
1.1 parser 700: case OCI_INVALID_HANDLE:
1.4 parser 701: msg="INVALID_HANDLE"; break;
1.1 parser 702: case OCI_STILL_EXECUTING:
1.4 parser 703: msg="STILL_EXECUTE"; break;
1.1 parser 704: case OCI_CONTINUE:
1.4 parser 705: msg="CONTINUE"; break;
706: default:
707: msg="unknown"; break;
1.2 parser 708: }
1.1 parser 709:
1.3 parser 710: snprintf(cs.error, sizeof(cs.error), "%s (%s, %d)",
711: msg, step, (int)status);
1.1 parser 712: longjmp(cs.mark, 1);
713: }
714:
715:
716: /* ----------------------------------------------------------------- */
717: /* Intbind callback that does not do any data input. */
718: /* ----------------------------------------------------------------- */
719: static sb4 cbf_no_data(
720: dvoid *ctxp,
721: OCIBind *bindp,
722: ub4 iter, ub4 index,
723: dvoid **bufpp,
724: ub4 *alenpp,
725: ub1 *piecep,
726: dvoid **indpp) {
1.5 ! parser 727: *bufpp=(dvoid *)0;
1.2 parser 728: *alenpp=0;
729: static sb2 null_ind=-1;
730: *indpp=(dvoid *) &null_ind;
731: *piecep=OCI_ONE_PIECE;
1.1 parser 732:
733: return OCI_CONTINUE;
734: }
735:
736: /* ----------------------------------------------------------------- */
737: /* Outbind callback for returning data. */
738: /* ----------------------------------------------------------------- */
739: static sb4 cbf_get_data(dvoid *ctxp,
740: OCIBind *bindp,
741: ub4 iter, ub4 index,
742: dvoid **bufpp,
743: ub4 **alenp,
744: ub1 *piecep,
745: dvoid **indpp,
746: ub2 **rcodepp) {
747: OracleSQL_query_lobs::cbf_context_struct &context=
748: *(OracleSQL_query_lobs::cbf_context_struct *)ctxp;
749:
1.3 parser 750: if(index==0) {
1.2 parser 751: static ub4 rows=0;
1.4 parser 752: OCIAttrGet((CONST dvoid *) bindp, OCI_HTYPE_BIND, (dvoid *)&rows,
1.1 parser 753: (ub4 *)sizeof(ub2), OCI_ATTR_ROWS_RETURNED, context.cs->errhp);
1.2 parser 754: context.rows->count=(ub2)rows;
755: context.rows->row=(OracleSQL_query_lobs::return_rows::return_row *)
1.1 parser 756: context.services->malloc(sizeof(OracleSQL_query_lobs::return_rows::return_row)*rows);
757: }
758:
759: OracleSQL_query_lobs::return_rows::return_row &var=context.rows->row[index];
760:
761: check(*context.services, *context.cs, "alloc output var desc dynamic", OCIDescriptorAlloc(
762: (dvoid *) context.cs->envhp, (dvoid **)&var.locator,
1.3 parser 763: (ub4)OCI_DTYPE_LOB,
1.5 ! parser 764: 0, (dvoid **)0));
1.1 parser 765:
1.2 parser 766: *bufpp=var.locator;
767: *alenp=&var.len;
768: *indpp=(dvoid *) &var.ind;
769: *piecep=OCI_ONE_PIECE;
770: *rcodepp=&var.rcode;
1.1 parser 771:
772: return OCI_CONTINUE;
773: }
774:
1.3 parser 775: void tolower(char *out, const char *in, size_t size) {
776: while(size--)
777: *out++=tolower(*in++);
778: }
1.1 parser 779:
780: extern "C" SQL_Driver *create() {
781: return new OracleSQL_Driver();
782: }