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1.1 parser 1: /** @file
2: Parser Oracle driver.
3:
1.29 paf 4: Copyright(c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.1 parser 5:
1.19 paf 6: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 parser 7:
8: 2001.07.30 using Oracle 8.1.6 [@test tested with Oracle 7.x.x]
9: */
1.60 ! paf 10: static const char *RCSId="$Id: parser3oracle.C,v 1.59 2004/06/18 11:29:55 paf 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:
1.45 paf 41: #if _MSC_VER
42: // interaction between '_setjmp' and C++ object destruction is non-portable
43: // but we forced to do that under HPUX
44: #pragma warning(disable:4611)
45: #endif
46:
1.33 paf 47: /// @todo small memory leaks here
1.10 paf 48: static int pa_setenv(const char *name, const char *value, bool do_append) {
49: const char *prev_value=0;
50: if(do_append)
51: prev_value=getenv(name);
1.4 paf 52: #ifdef HAVE_PUTENV
53: // MEM_LEAK_HERE. refer to EOF man putenv
1.10 paf 54: char *buf=(char *)::malloc(strlen(name)
55: +1
56: +(prev_value?strlen(prev_value):0)
57: +strlen(value)
58: +1);
1.4 paf 59: strcpy(buf, name);
60: strcat(buf, "=");
1.10 paf 61: if(prev_value)
62: strcat(buf, prev_value);
1.4 paf 63: strcat(buf, value);
1.5 paf 64: /*
65: if(FILE *f=fopen("f", "at")) {
66: fprintf(f, "****************************%s\n", buf);
67: // for (char **env = environ; env != NULL && *env != NULL; env++)
68: // fputs(*env, f);
69:
70: fclose(f);
71: }
72: */
1.4 paf 73: return putenv(buf);
74: #else
75: //#ifdef HAVE_SETENV
1.10 paf 76: if(value) {
77: if(prev_value) {
78: // MEM_LEAK_HERE
1.33 paf 79: char *buf=(char *)::malloc(strlen(prev_value)
1.10 paf 80: +strlen(value)
81: +1);
82: strcpy(buf, prev_value);
83: strcat(buf, value);
1.24 paf 84: value=buf;
85: }
86: return setenv(name, value, 1/*overwrite*/);
1.10 paf 87: } else {
1.4 paf 88: unsetenv(name);
89: return 0;
90: }
91: #endif
92: }
93:
1.1 parser 94: static char *lsplit(char *string, char delim) {
95: if(string) {
96: char *v=strchr(string, delim);
97: if(v) {
98: *v=0;
99: return v+1;
100: }
101: }
102: return 0;
103: }
104:
1.4 paf 105: static char *lsplit(char **string_ref, char delim) {
106: char *result=*string_ref;
107: char *next=lsplit(*string_ref, delim);
108: *string_ref=next;
109: return result;
110: }
111:
1.1 parser 112: #ifndef DOXYGEN
1.49 paf 113: struct Connection {
1.42 paf 114: SQL_Driver_services *services;
115:
1.1 parser 116: jmp_buf mark; char error[MAX_STRING];
1.27 paf 117: SQL_Error sql_error;
1.1 parser 118: OCIEnv *envhp;
119: OCIServer *srvhp;
120: OCIError *errhp;
121: OCISvcCtx *svchp;
122: OCISession *usrhp;
1.39 paf 123:
1.46 paf 124: char* fetch_buffers[MAX_COLS];
125:
1.42 paf 126: struct Options {
127: bool bLowerCaseColumnNames;
128: const char* cstrClientCharset;
129: } options;
1.1 parser 130: };
131:
1.60 ! paf 132: struct Query_lobs {
1.1 parser 133: struct return_rows {
134: struct return_row {
135: OCILobLocator *locator; ub4 len;
136: int ind;
137: ub2 rcode;
138: } *row;
139: int count;
140: };
141: struct Item {
142: const char *name_ptr; size_t name_size;
143: char *data_ptr; size_t data_size;
144: OCILobLocator *locator;
145: OCIBind *bind;
146: return_rows rows;
1.57 paf 147: Connection *connection;
1.1 parser 148: } items[MAX_IN_LOBS];
149: int count;
150: };
1.60 ! paf 151:
1.1 parser 152: #endif
153:
154: // forwards
1.60 ! paf 155: static void faile(Connection& connection, const char *msg);
! 156: static void check(Connection& connection, const char *step, sword status);
! 157: static void check(Connection& connection, bool error);
1.1 parser 158: static sb4 cbf_no_data(
159: dvoid *ctxp,
160: OCIBind *bindp,
161: ub4 iter, ub4 index,
162: dvoid **bufpp,
163: ub4 *alenpp,
164: ub1 *piecep,
165: dvoid **indpp);
166: static sb4 cbf_get_data(dvoid *ctxp,
167: OCIBind *bindp,
168: ub4 iter, ub4 index,
169: dvoid **bufpp,
170: ub4 **alenp,
171: ub1 *piecep,
172: dvoid **indpp,
173: ub2 **rcodepp);
1.55 paf 174: static void tolower_str(char *out, const char *in, size_t size);
175: static void toupper_str(char *out, const char *in, size_t size);
1.1 parser 176:
1.49 paf 177: static const char *options2env(char *s, Connection::Options* options) {
1.42 paf 178: while(s) {
179: if(char *key=lsplit(&s, '&')) {
180: if(*key) {
181: if(char *value=lsplit(key, '=')) {
182: if( strcmp( key, "ClientCharset" ) == 0 ) {
1.44 paf 183: if(options) {
1.55 paf 184: toupper_str(value, value, strlen(value));
1.42 paf 185: options->cstrClientCharset = value;
1.44 paf 186: }
1.42 paf 187: continue;
188: }
189:
190: if( strcmp( key, "LowerCaseColumnNames" ) == 0 ) {
191: if(options)
192: options->bLowerCaseColumnNames = atoi(value)!=0;
193: continue;
194: }
195:
196: bool do_append=key[strlen(key)-1]=='+'; // PATH+=
197: if(do_append)
198: key[strlen(key)-1]=0; // remove trailing +
199: if(strncmp(key, "ORACLE_", 7)==0 // ORACLE_HOME & co
200: || strncmp(key, "ORA_", 4)==0 // ORA_ENCRYPT_LOGIN & co
201: || strncmp(key, "NLS_", 4)==0 // NLS_LANG & co
202: || do_append
203: ) {
204: if(pa_setenv(key, value, do_append)!=0)
205: return "problem changing process environment" /*key*/;
206: } else
207: return "unknown option" /*key*/;
208: } else
209: return "option without =value" /*key*/;
210: }
211: }
212: }
213: return 0;
214: }
215:
1.1 parser 216: /**
217: OracleSQL server driver
218: */
219: class OracleSQL_Driver : public SQL_Driver {
220: public:
221:
222: OracleSQL_Driver() : SQL_Driver() {
223: }
224:
225: /// get api version
226: int api_version() { return SQL_DRIVER_API_VERSION; }
1.6 paf 227: /** initialize driver by loading sql dynamic link library
228: @todo ?objects=1 which would turn on OCI_OBJECT init flag
229: */
1.5 paf 230: const char *initialize(char *dlopen_file_spec) {
231: char *options=lsplit(dlopen_file_spec, '?');
1.1 parser 232:
233: const char *error=dlopen_file_spec?
234: dlink(dlopen_file_spec):"client library column is empty";
235: if(!error) {
1.39 paf 236: error=options2env(options, 0);
1.1 parser 237:
1.5 paf 238: if(!error)
239: OCIInitialize((ub4)OCI_THREADED/*| OCI_OBJECT*/, (dvoid *)0,
240: (dvoid * (*)(void *, unsigned int))0,
241: (dvoid * (*)(void*, void*, unsigned int))0,
242: (void (*)(void*, void*))0
243: );
1.1 parser 244: }
245:
246: return error;
247: }
248:
249: /** connect
1.58 paf 250: @param url
1.4 paf 251: format: @b user:pass@service?
252: ORACLE_HOME=/u01/app/oracle/product/8.1.5&
1.5 paf 253: ORA_NLS33=/u01/app/oracle/product/8.1.5/ocommon/nls/admin/data&
1.4 paf 254: NLS_LANG=RUSSIAN_AMERICA.CL8MSWIN1251&
255: ORA_ENCRYPT_LOGIN=TRUE
256:
257: @todo environment manupulation doesnt look thread safe
1.58 paf 258: @todo allocate 'aused_only_in_connect_url' on gc heap, so it can be manipulated directly
1.1 parser 259: */
260: void connect(
1.58 paf 261: char *url,
1.1 parser 262: SQL_Driver_services& services,
1.50 paf 263: void **connection_ref ///< output: Connection *
1.56 paf 264: )
265: {
266: // connections are cross-request, do not use services._alloc [linked with request]
1.58 paf 267: Connection& connection=*(Connection *)services.malloc(sizeof(Connection));
1.49 paf 268: connection.services=&services;
269: connection.options.bLowerCaseColumnNames = true;
1.50 paf 270: *connection_ref=&connection;
1.1 parser 271:
1.58 paf 272: char *user=url;
1.1 parser 273: char *service=lsplit(user, '@');
274: char *pwd=lsplit(user, ':');
1.4 paf 275: char *options=lsplit(service, '?');
1.1 parser 276:
277: if(!(user && pwd && service))
278: services._throw("mailformed connect part, must be 'user:pass@service'");
279:
1.49 paf 280: if(const char *error=options2env(options, &connection.options))
1.5 paf 281: services._throw(error);
1.4 paf 282:
1.49 paf 283: if(setjmp(connection.mark))
284: services._throw(connection.error);
1.1 parser 285:
286: // Allocate and initialize OCIError handle, attempt #1
287: /*
288: grabbed from sample
289: /server.804/a58234/oci_func.htm#446192
290: but doc
291: /server.804/a58234/oci_func.htm#446100
292: doesnt have this param listed as allowed
293: 8.1.6 client library barks as OCI_INVALID_HANDLE
294: and debugging revealed that OCI_HTYPE_ENV param value is invalid
295: later in doc
296: /server.804/a58234/oci_func.htm#446192
297: on OCIEnvInit thay say
298: "No changes are done to an already initialized handle"
299: think, this is some sort of backward compatibility wonder.
300: leaving as it is, and without check()
301: */
1.49 paf 302: OCIHandleAlloc((dvoid *)NULL, (dvoid **) &connection.envhp, (ub4)OCI_HTYPE_ENV, 0, 0);
1.1 parser 303: // Initialize an environment handle, attempt #2
1.49 paf 304: check(connection, "EnvInit", OCIEnvInit(
305: &connection.envhp, (ub4)OCI_DEFAULT, 0, 0));
1.1 parser 306: // Allocate and initialize OCIError handle
1.49 paf 307: check(connection, "HandleAlloc errhp", OCIHandleAlloc(
308: (dvoid *)connection.envhp, (dvoid **) &connection.errhp, (ub4)OCI_HTYPE_ERROR, 0, 0));
1.1 parser 309: // Allocate and initialize OCIServer handle
1.49 paf 310: check(connection, "HandleAlloc srvhp", OCIHandleAlloc(
311: (dvoid *)connection.envhp, (dvoid **) &connection.srvhp, (ub4)OCI_HTYPE_SERVER, 0, 0));
1.1 parser 312: // Attach to a 'service'; initialize server context handle
1.49 paf 313: check(connection, "ServerAttach", OCIServerAttach(
314: connection.srvhp, connection.errhp, (text *)service, (sb4)strlen(service), (ub4)OCI_DEFAULT));
1.1 parser 315: // Allocate and initialize OCISvcCtx handle
1.49 paf 316: check(connection, "HandleAlloc svchp", OCIHandleAlloc(
317: (dvoid *)connection.envhp, (dvoid **) &connection.svchp, (ub4)OCI_HTYPE_SVCCTX, 0, 0));
1.1 parser 318: // set attribute server context in the service context
1.49 paf 319: check(connection, "AttrSet server-service", OCIAttrSet(
320: (dvoid *)connection.svchp, (ub4)OCI_HTYPE_SVCCTX,
321: (dvoid *)connection.srvhp, (ub4)0,
322: (ub4)OCI_ATTR_SERVER, (OCIError *)connection.errhp));
1.1 parser 323: // allocate a user context handle
1.49 paf 324: check(connection, "HandleAlloc usrhp", OCIHandleAlloc(
325: (dvoid *)connection.envhp, (dvoid **)&connection.usrhp, (ub4)OCI_HTYPE_SESSION, 0, 0));
1.1 parser 326: // set 'user' name
1.49 paf 327: check(connection, "AttrSet user-session", OCIAttrSet(
328: (dvoid *)connection.usrhp, (ub4)OCI_HTYPE_SESSION,
1.1 parser 329: (dvoid *)user, (ub4)strlen(user),
1.49 paf 330: OCI_ATTR_USERNAME, connection.errhp));
1.1 parser 331: // set 'pwd' password
1.49 paf 332: check(connection, "AttrSet pwd-session", OCIAttrSet(
333: (dvoid *)connection.usrhp, (ub4)OCI_HTYPE_SESSION,
1.1 parser 334: (dvoid *)pwd, (ub4)strlen(pwd),
1.49 paf 335: OCI_ATTR_PASSWORD, connection.errhp));
1.1 parser 336: // Authenticate a user
1.49 paf 337: check(connection, "SessionBegin", OCISessionBegin(
338: connection.svchp, connection.errhp, connection.usrhp,
1.1 parser 339: OCI_CRED_RDBMS, OCI_DEFAULT));
340: // remember connection in session
1.49 paf 341: check(connection, "AttrSet service-session", OCIAttrSet(
342: (dvoid *)connection.svchp, (ub4)OCI_HTYPE_SVCCTX,
343: (dvoid *)connection.usrhp, (ub4)0,
344: OCI_ATTR_SESSION, connection.errhp));
1.1 parser 345: }
1.49 paf 346: void disconnect(void *aconnection) {
347: Connection& connection=*static_cast<Connection *>(aconnection);
1.47 paf 348:
1.58 paf 349: // free fetch buffers. leave that to GC [no such services func. yet?]
350: /*
1.47 paf 351: for(int i=0; i<MAX_COLS; i++) {
1.49 paf 352: if(void* fetch_buffer=connection.fetch_buffers[i])
1.58 paf 353: connection.services->free(fetch_buffer);
1.47 paf 354: else
355: break;
1.58 paf 356: }
357: */
1.47 paf 358:
1.1 parser 359: // Terminate a user session
360: OCISessionEnd(
1.49 paf 361: connection.svchp, connection.errhp, connection.usrhp, (ub4)OCI_DEFAULT);
1.1 parser 362: // Detach from a server; uninitialize server context handle
363: OCIServerDetach(
1.49 paf 364: connection.srvhp, connection.errhp, (ub4)OCI_DEFAULT);
1.1 parser 365: // Free a previously allocated handles
366: /*
367: oci will free them up as belonging to env
368: OCIHandleFree(
1.49 paf 369: (dvoid *)connection.srvhp, (ub4)OCI_HTYPE_SERVER);
1.1 parser 370: OCIHandleFree(
1.49 paf 371: (dvoid *)connection.svchp, (ub4)OCI_HTYPE_SVCCTX);
1.1 parser 372: OCIHandleFree(
1.49 paf 373: (dvoid *)connection.errhp, (ub4)OCI_HTYPE_ERROR);
1.1 parser 374: */
375: OCIHandleFree(
1.49 paf 376: (dvoid *)connection.envhp, (ub4)OCI_HTYPE_ENV);
1.1 parser 377:
1.58 paf 378: // free connection. leave that to GC [no such services func. yet?]
379: // connection.services->free(&connection);
1.1 parser 380: }
1.49 paf 381: void commit(void *aconnection) {
382: Connection& connection=*static_cast<Connection *>(aconnection);
383: if(setjmp(connection.mark))
384: connection.services->_throw(connection.error);
1.1 parser 385:
1.49 paf 386: check(connection, "commit", OCITransCommit(connection.svchp, connection.errhp, 0));
1.1 parser 387: }
1.49 paf 388: void rollback(void *aconnection) {
389: Connection& connection=*static_cast<Connection *>(aconnection);
390: if(setjmp(connection.mark))
391: connection.services->_throw(connection.error);
1.1 parser 392:
1.42 paf 393: // sometimes rollback is done in context when this yields error which masks previous error
394: // consider consequent errors not very important to report, reporting first one
1.49 paf 395: /*check(connection, "rollback", */OCITransRollback(connection.svchp, connection.errhp, 0)/*)*/;
1.1 parser 396: }
397:
1.45 paf 398: bool ping(void* /*connection*/) {
1.1 parser 399: // maybe OCIServerVersion?
1.4 paf 400: // select 0 from dual
1.1 parser 401: return true;
402: }
403:
1.49 paf 404: const char* quote(void *aconnection,
1.42 paf 405: const char *from, unsigned int length)
406: {
1.49 paf 407: Connection& connection=*static_cast<Connection *>(aconnection);
408: char *result=(char*)connection.services->malloc_atomic(length*2+1);
1.32 paf 409: char *to=result;
410: while(length--) {
411: switch(*from) {
412: case '\'': // "'" -> "''"
1.35 paf 413: *to++='\'';
1.32 paf 414: break;
1.1 parser 415: }
1.32 paf 416: *to++=*from++;
417: }
418: *to=0;
419: return result;
1.1 parser 420: }
1.60 ! paf 421: void query(void* aconnection,
! 422: const char* astatement,
! 423: size_t placeholders_count, Placeholder* placeholders,
! 424: unsigned long offset, unsigned long limit,
1.42 paf 425: SQL_Driver_query_event_handlers& handlers)
426: {
1.49 paf 427: Connection& connection=*static_cast<Connection *>(aconnection);
1.54 paf 428: const char* cstrClientCharset=connection.options.cstrClientCharset;
1.60 ! paf 429: Query_lobs lobs={{0}, 0};
1.1 parser 430: OCIStmt *stmthp=0;
431:
1.49 paf 432: SQL_Driver_services& services=*connection.services;
1.42 paf 433:
434: // transcode from $request:charset to connect-string?client_charset
1.54 paf 435: if(cstrClientCharset) {
1.60 ! paf 436: size_t transcoded_xxx_size;
1.42 paf 437: services.transcode(astatement, strlen(astatement),
1.60 ! paf 438: astatement, transcoded_xxx_size,
1.42 paf 439: services.request_charset(),
440: cstrClientCharset);
1.53 paf 441: }
1.42 paf 442:
1.1 parser 443: bool failed=false;
1.49 paf 444: if(setjmp(connection.mark)) {
1.1 parser 445: failed=true;
446: goto cleanup;
447: } else {
1.49 paf 448: const char *statement=preprocess_statement(connection, astatement, lobs);
1.1 parser 449:
1.49 paf 450: check(connection, "HandleAlloc STMT", OCIHandleAlloc(
451: (dvoid *)connection.envhp, (dvoid **) &stmthp, (ub4)OCI_HTYPE_STMT, 0, 0));
452: check(connection, "syntax",
453: OCIStmtPrepare(stmthp, connection.errhp, (unsigned char *)statement,
1.1 parser 454: (ub4)strlen((char *)statement),
455: (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));
1.60 ! paf 456:
! 457: struct Bind_info {
! 458: OCIBind *bind;
! 459: sb2 indicator;
! 460: };
! 461:
! 462: int binds_size=sizeof(Bind_info) * placeholders_count;
! 463: Bind_info* binds=static_cast<Bind_info*>(services.malloc_atomic(binds_size));
1.1 parser 464: {
1.60 ! paf 465: for(size_t i=0; i<placeholders_count; i++) {
! 466: Placeholder& ph=placeholders[i];
! 467: Bind_info& bi=binds[i];
! 468: bi.bind=0;
! 469: bi.indicator=ph.is_null? -1: 0/*9999*/;
! 470:
! 471: size_t value_length;
! 472:
! 473: if(cstrClientCharset) {
! 474: size_t name_length;
! 475: services.transcode(ph.name, strlen(ph.name),
! 476: ph.name, name_length,
! 477: services.request_charset(),
! 478: cstrClientCharset);
! 479:
! 480: if(ph.value)
! 481: services.transcode(ph.value, strlen(ph.value),
! 482: ph.value, value_length,
! 483: services.request_charset(),
! 484: cstrClientCharset);
! 485: } else {
! 486: value_length=ph.value? strlen(ph.value): 0;
! 487: }
! 488:
! 489: char placeholder_buf[MAX_STRING];
! 490: sb4 placeh_len=snprintf(placeholder_buf, sizeof(placeholder_buf), ":%s", ph.name);
! 491: check(connection, "bind name", OCIBindByName(stmthp,
! 492: &bi.bind, connection.errhp,
! 493: (text*)placeholder_buf, placeh_len,
! 494: (dvoid *)ph.value, (sword)value_length, SQLT_CHR/*SQLT_STR*/, (dvoid *)&bi.indicator,
! 495: (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DEFAULT));
! 496: }
! 497:
1.1 parser 498: for(int i=0; i<lobs.count; i++) {
1.60 ! paf 499: Query_lobs::Item &item=lobs.items[i];
1.49 paf 500: check(connection, "alloc output var desc", OCIDescriptorAlloc(
1.57 paf 501: (dvoid *)connection.envhp, (dvoid **)&item.locator, (ub4)OCI_DTYPE_LOB, 0, 0));
1.1 parser 502:
1.59 paf 503: char placeholder_buf[MAX_STRING];
504: sb4 placeh_len=snprintf(placeholder_buf, sizeof(placeholder_buf),
505: ":%.*s", item.name_size, item.name_ptr);
506: check(connection, "bind lob", OCIBindByName(stmthp,
1.57 paf 507: &item.bind, connection.errhp,
1.59 paf 508: (text*)placeholder_buf, placeh_len,
1.57 paf 509: (dvoid *)&item.locator,
510: (sword)sizeof (item.locator), SQLT_CLOB, (dvoid *)0,
1.1 parser 511: (ub2 *)0, (ub2 *)0, (ub4)0, (ub4 *)0, OCI_DATA_AT_EXEC));
512:
1.57 paf 513: item.rows.count=0;
514: item.connection=&connection;
1.49 paf 515: check(connection, "bind dynamic", OCIBindDynamic(
1.57 paf 516: item.bind, connection.errhp,
517: (dvoid *) &item, cbf_no_data,
518: (dvoid *) &item, cbf_get_data));
1.1 parser 519: }
520: }
521:
1.49 paf 522: execute_prepared(connection,
1.26 paf 523: statement, stmthp, lobs,
524: offset, limit, handlers);
1.60 ! paf 525:
! 526: {
! 527: for(size_t i=0; i<placeholders_count; i++) {
! 528: Placeholder& ph=placeholders[i];
! 529: Bind_info& bi=binds[i];
! 530:
! 531: if(bi.indicator==9999 /*unchanged*/)
! 532: continue;
! 533:
! 534: if(bi.indicator==-1)
! 535: ph.is_null=true;
! 536: else
! 537: if(bi.indicator==0)
! 538: ph.is_null=false;
! 539: else
! 540: fail(connection, bi.indicator<0?
! 541: "column return buffer overflow, additionally size too big to be returned in 'indicator'"
! 542: : "column return buffer overflow");
! 543:
! 544: ph.were_updated=true;
! 545:
! 546: if(cstrClientCharset) {
! 547: if(ph.value) {
! 548: size_t value_length;
! 549: services.transcode(ph.value, strlen(ph.value),
! 550: ph.value, value_length,
! 551: cstrClientCharset,
! 552: services.request_charset());
! 553: }
! 554: }
! 555: }
! 556: }
1.1 parser 557: }
558: cleanup: // no check call after this point!
559: {
560: for(int i=0; i<lobs.count; i++) {
561: /* free var locator */
562: if(OCILobLocator *locator=lobs.items[i].locator)
563: OCIDescriptorFree((dvoid *)locator, (ub4)OCI_DTYPE_LOB);
564:
565: /* free rows descriptors */
1.60 ! paf 566: Query_lobs::return_rows &rows=lobs.items[i].rows;
1.1 parser 567: for(int r=0; r<rows.count; r++)
568: OCIDescriptorFree((dvoid *)rows.row[r].locator, (ub4)OCI_DTYPE_LOB);
569: }
570: }
571: if(stmthp)
572: OCIHandleFree((dvoid *)stmthp, (ub4)OCI_HTYPE_STMT);
573:
1.26 paf 574: if(failed) {
1.49 paf 575: if(connection.sql_error.defined())
576: services._throw(connection.sql_error);
577: services._throw(connection.error);
1.26 paf 578: }
1.1 parser 579: }
580:
581: private: // private funcs
582:
1.49 paf 583: const char *preprocess_statement(Connection& connection,
1.60 ! paf 584: const char *astatement, Query_lobs &lobs) {
1.1 parser 585: size_t statement_size=strlen(astatement);
1.49 paf 586: SQL_Driver_services& services=*connection.services;
1.1 parser 587:
1.32 paf 588: char *result=(char *)services.malloc_atomic(statement_size
1.1 parser 589: +MAX_STRING // in case of short 'strings'
590: +11/* returning */+6/* into */+(MAX_LOB_NAME_LENGTH+2/*:, */)*2/*ret into*/*MAX_IN_LOBS
591: +1);
592: const char *o=astatement;
593:
594: // /**xxx**/'literal' -> EMPTY_CLOB_FUNC_CALL
595: char *n=result;
596: while(*o) {
597: if(
598: o[0]=='/' &&
599: o[1]=='*' &&
600: o[2]=='*') { // name start
1.34 paf 601: const char* saved_o=o;
1.1 parser 602: o+=3;
603: const char *name_begin=o;
604: while(*o)
605: if(
606: o[0]=='*' &&
607: o[1]=='*' &&
608: o[2]=='/' &&
609: o[3]=='\'') { // name end
1.34 paf 610: saved_o=0; // found, marking that
1.1 parser 611: const char *name_end=o;
612: o+=4;
1.60 ! paf 613: Query_lobs::Item &item=lobs.items[lobs.count++];
1.1 parser 614: item.name_ptr=name_begin; item.name_size=name_end-name_begin;
1.32 paf 615: item.data_ptr=(char *)services.malloc_atomic(statement_size/*max*/); item.data_size=0;
1.1 parser 616:
617: const char *start=o;
618: bool escaped=false;
619: while(*o && !(o[0]=='\'' && o[1]!='\'' && !escaped)) {
1.14 paf 620: escaped=o[0]=='\'' && o[1]=='\'';
1.1 parser 621: if(escaped) {
622: // write pending, skip "\" or "'"
623: if(size_t size=o-start) {
624: memcpy(item.data_ptr+item.data_size, start, size);
625: item.data_size+=size;
626: }
627: start=++o;
628: } else
629: o++;
630: }
631: if(size_t size=o-start) {
632: memcpy(item.data_ptr+item.data_size, start, size);
633: item.data_size+=size;
634: }
635: if(*o)
636: o++; // skip "'"
637:
638: n+=sprintf(n, EMPTY_CLOB_FUNC_CALL);
639: break;
640: } else
641: o++; // /**skip**/'xxx'
1.34 paf 642: if(saved_o) {
643: o=saved_o;
644: *n++=*o++;
645: }
1.1 parser 646: } else
647: *n++=*o++;
648: }
649: *n=0;
650:
651: if(lobs.count) {
652: int i;
653: n+=sprintf(n, " returning ");
654: for(i=0; i<lobs.count; i++) {
655: if(i)
656: *n++=',';
657: n+=sprintf(n, "%.*s", lobs.items[i].name_size, lobs.items[i].name_ptr);
658: }
659: n+=sprintf(n, " into ");
660: for(i=0; i<lobs.count; i++) {
661: if(i)
1.41 paf 662: *n++=',';
1.1 parser 663: n+=sprintf(n, ":%.*s", lobs.items[i].name_size, lobs.items[i].name_ptr);
664: }
665: }
666:
667: return result;
668: }
669:
670: void execute_prepared(
1.49 paf 671: Connection& connection,
1.60 ! paf 672: const char *statement, OCIStmt *stmthp, Query_lobs &lobs,
1.1 parser 673: unsigned long offset, unsigned long limit,
674: SQL_Driver_query_event_handlers& handlers) {
675:
676: ub2 stmt_type=0; // UNKNOWN
677: /*
678: //gpfs on sun. paf 000818
679: //Zanyway, this is needed before.
1.49 paf 680: check(connection, "get stmt type", OCIAttrGet(
1.1 parser 681: (dvoid *)stmthp, (ub4)OCI_HTYPE_STMT, (ub1 *)&stmt_type,
1.49 paf 682: (ub4 *)0, OCI_ATTR_STMT_TYPE, connection.errhp));
1.1 parser 683: */
1.16 paf 684:
1.17 paf 685: while(isspace(*statement))
1.16 paf 686: statement++;
1.1 parser 687: if(strncasecmp(statement, "select", 6)==0)
688: stmt_type=OCI_STMT_SELECT;
689: else if(strncasecmp(statement, "insert", 6)==0)
690: stmt_type=OCI_STMT_INSERT;
691: else if(strncasecmp(statement, "update", 6)==0)
692: stmt_type=OCI_STMT_UPDATE;
693:
1.49 paf 694: sword status=OCIStmtExecute(connection.svchp, stmthp, connection.errhp,
1.1 parser 695: (ub4)stmt_type==OCI_STMT_SELECT?0:1, (ub4)0,
696: (OCISnapshot *)NULL,
697: (OCISnapshot *)NULL, (ub4)OCI_DEFAULT);
698:
699: if(status!=OCI_NO_DATA)
1.49 paf 700: check(connection, "execute", status);
1.1 parser 701:
702: {
703: for(int i=0; i<lobs.count; i++)
704: if(ub4 bytes_to_write=lobs.items[i].data_size) {
1.60 ! paf 705: Query_lobs::return_rows *rows=&lobs.items[i].rows;
1.1 parser 706: for(int r=0; r<rows->count; r++) {
707: OCILobLocator *locator=rows->row[r].locator;
1.49 paf 708: check(connection, "lobwrite", OCILobWrite (
709: connection.svchp, connection.errhp,
1.1 parser 710: locator, &bytes_to_write, 1,
711: (dvoid *)lobs.items[i].data_ptr, (ub4)bytes_to_write, OCI_ONE_PIECE,
712: (dvoid *)0, 0, (ub2)0,
713: (ub1) SQLCS_IMPLICIT));
714: }
715: }
716: }
717:
718: switch(stmt_type) {
719: case OCI_STMT_SELECT:
1.49 paf 720: fetch_table(connection,
1.1 parser 721: stmthp, offset, limit,
722: handlers);
723: break;
724: default:
725: /*
726: case OCI_STMT_INSERT:
727: case OCI_STMT_UPDATE:
728: */
729: break;
730: }
731: }
732:
1.49 paf 733: void fetch_table(Connection& connection,
1.1 parser 734: OCIStmt *stmthp, unsigned long offset, unsigned long limit,
1.42 paf 735: SQL_Driver_query_event_handlers& handlers)
736: {
1.54 paf 737: const char* cstrClientCharset=connection.options.cstrClientCharset;
1.49 paf 738: SQL_Driver_services& services=*connection.services;
1.12 paf 739:
1.10 paf 740: ub4 prefetch_rows=100;
1.49 paf 741: check(connection, "AttrSet prefetch-rows", OCIAttrSet(
1.9 paf 742: (dvoid *)stmthp, (ub4)OCI_HTYPE_STMT,
743: (dvoid *)&prefetch_rows, (ub4)0,
1.49 paf 744: (ub4)OCI_ATTR_PREFETCH_ROWS, (OCIError *)connection.errhp));
1.9 paf 745:
1.20 paf 746: ub4 prefetch_mem_size=100*0x400;
1.49 paf 747: check(connection, "AttrSet prefetch-memory", OCIAttrSet(
1.9 paf 748: (dvoid *)stmthp, (ub4)OCI_HTYPE_STMT,
749: (dvoid *)&prefetch_mem_size, (ub4)0,
1.49 paf 750: (ub4)OCI_ATTR_PREFETCH_MEMORY, (OCIError *)connection.errhp));
1.1 parser 751:
752: OCIParam *mypard;
753: ub2 dtype;
1.51 paf 754: const char* col_name;
1.1 parser 755:
1.40 paf 756: struct Col {
1.1 parser 757: ub2 type;
758: char *str;
759: OCILobLocator *var;
760: OCIDefine *def;
761: sb2 indicator;
762: } cols[MAX_COLS]={0};
763: int column_count=0;
764:
765: bool failed=false;
1.49 paf 766: jmp_buf saved_mark; memcpy(saved_mark, connection.mark, sizeof(jmp_buf));
767: if(setjmp(connection.mark)) {
1.1 parser 768: failed=true;
769: goto cleanup;
770: } else {
1.27 paf 771: // idea of preincrementing is that at error time all handles would free up
772: while(++column_count<=MAX_COLS) {
773: /* get next descriptor, if there is one */
1.49 paf 774: if(OCIParamGet(stmthp, OCI_HTYPE_STMT, connection.errhp, (void **)&mypard,
1.27 paf 775: (ub4) column_count)!=OCI_SUCCESS) {
776: --column_count;
777: break;
778: }
779:
780: /* Retrieve the data type attribute */
1.49 paf 781: check(connection, "get type", OCIAttrGet(
1.27 paf 782: (dvoid*) mypard, (ub4)OCI_DTYPE_PARAM,
783: (dvoid*) &dtype, (ub4 *)0, (ub4)OCI_ATTR_DATA_TYPE,
1.49 paf 784: (OCIError *)connection.errhp));
1.27 paf 785:
786: /* Retrieve the column name attribute */
787: ub4 col_name_len;
1.49 paf 788: check(connection, "get name", OCIAttrGet(
1.27 paf 789: (dvoid*) mypard, (ub4)OCI_DTYPE_PARAM,
790: (dvoid**) &col_name, (ub4 *) &col_name_len, (ub4)OCI_ATTR_NAME,
1.49 paf 791: (OCIError *)connection.errhp));
1.51 paf 792: // transcode to $request:charset from connect-string?client_charset
1.54 paf 793: if(cstrClientCharset) {
1.51 paf 794: services.transcode(col_name, col_name_len,
795: col_name, col_name_len,
796: cstrClientCharset,
797: services.request_charset());
798: }
799:
1.40 paf 800: Col& col=cols[column_count-1];
1.27 paf 801: {
1.38 paf 802: size_t length=(size_t)col_name_len;
803: char *ptr=(char *)services.malloc_atomic(length+1);
1.49 paf 804: if( connection.options.bLowerCaseColumnNames )
1.55 paf 805: tolower_str(ptr, col_name, length);
1.39 paf 806: else
807: memcpy(ptr, col_name, length);
1.38 paf 808: ptr[length]=0;
1.49 paf 809: check(connection, handlers.add_column(connection.sql_error, ptr, length));
1.27 paf 810: }
811:
812: ub2 coerce_type=dtype;
813: sb4 size=0;
814: void *ptr;
815:
816: switch(dtype) {
817: case SQLT_CLOB:
1.1 parser 818: {
1.49 paf 819: check(connection, "alloc output var desc", OCIDescriptorAlloc(
820: (dvoid *)connection.envhp, (dvoid **)(ptr=&col.var),
1.27 paf 821: (ub4)OCI_DTYPE_LOB,
822: 0, (dvoid **)0));
823:
824: size=0;
1.1 parser 825: break;
826: }
1.27 paf 827: default:
828: coerce_type=SQLT_STR;
1.49 paf 829: char*& buf=connection.fetch_buffers[column_count-1];
1.46 paf 830: ptr=buf; // get cached buffer
831: if(!ptr) // allocate if needed, caching it
1.58 paf 832: ptr=buf=(char *)services.malloc_atomic(MAX_OUT_STRING_LENGTH+1/*terminator*/);
1.46 paf 833: col.str=(char*)ptr;
1.27 paf 834: size=MAX_OUT_STRING_LENGTH;
835: break;
1.1 parser 836: }
837:
1.40 paf 838: col.type=coerce_type;
1.1 parser 839:
1.48 paf 840: // http://i/docs/oracle/server.804/a58234/oci_func.htm#449680
841: // this call implicitly allocates the define handle
842: // http://sunsite.eunnet.net/documentation/oracle.8.0.4/server.804/a58234/basics.htm
843: // when a statement handle is freed, any bind and define handles associated with it
844: // are also freed
1.49 paf 845: col.def=0; check(connection, "DefineByPos", OCIDefineByPos(
846: stmthp, &col.def, connection.errhp,
1.27 paf 847: column_count, (ub1 *) ptr, size,
1.40 paf 848: coerce_type, (dvoid *) &col.indicator,
1.27 paf 849: (ub2 *)0, (ub2 *)0, OCI_DEFAULT));
850: }
851:
1.49 paf 852: check(connection, handlers.before_rows(connection.sql_error));
1.27 paf 853:
854: for(unsigned long row=0; !limit||row<offset+limit; row++) {
1.49 paf 855: sword status=OCIStmtFetch(stmthp, connection.errhp, (ub4)1, (ub4)OCI_FETCH_NEXT,
1.27 paf 856: (ub4)OCI_DEFAULT);
857: if(status==OCI_NO_DATA)
858: break;
1.49 paf 859: check(connection, "fetch", status);
1.3 paf 860:
1.27 paf 861: if(row>=offset) {
1.49 paf 862: check(connection, handlers.add_row(connection.sql_error));
1.27 paf 863: for(int i=0; i<column_count; i++) {
1.37 paf 864: size_t length=0;
1.42 paf 865: char* strm=0;
1.60 ! paf 866:
! 867: sb2 indicator=cols[i].indicator;
! 868: if(indicator!=-1) { // not NULL
! 869: if(indicator!=0)
! 870: fail(connection, indicator<0?
! 871: "column return buffer overflow, additionally size too big to be returned in 'indicator'"
! 872: : "column return buffer overflow");
! 873:
1.27 paf 874: switch(cols[i].type) {
875: case SQLT_CLOB:
876: {
877: ub4 offset=1;
878: OCILobLocator *var=(OCILobLocator *)cols[i].var;
1.42 paf 879: size_t read_size=0;
1.45 paf 880: strm=(char*)services.malloc_atomic(1/*for terminator*/); // set type of memory block
1.42 paf 881: do {
882: char buf[MAX_STRING*10];
1.45 paf 883: ub4 amtp=0/*to be read in stream mode*/;
884: // http://i/docs/oracle/server.804/a58234/oci_func.htm#427818
1.49 paf 885: status=OCILobRead(connection.svchp, connection.errhp,
1.42 paf 886: var, &amtp, offset, (dvoid *)buf,
887: sizeof(buf),
888: (dvoid *)0, 0,
889: (ub2)0, (ub1)SQLCS_IMPLICIT);
890: if(status!=OCI_SUCCESS && status!=OCI_NEED_DATA)
1.49 paf 891: check(connection, "lobread", status);
1.42 paf 892:
1.45 paf 893: strm=(char*)services.realloc(strm, read_size+amtp+1/*for termintator*/);
1.42 paf 894: memcpy(strm+read_size, buf, amtp);
895: read_size+=amtp;
896: offset+=amtp;
897: } while(status==OCI_NEED_DATA);
898:
899: length=(size_t)read_size;
900: strm[length]=0;
1.1 parser 901: break;
902: }
1.27 paf 903: default:
1.32 paf 904: if(const char *value=cols[i].str) {
1.37 paf 905: length=strlen(value);
1.42 paf 906: strm=(char*)services.malloc_atomic(length+1);
907: memcpy(strm, value, length+1);
1.27 paf 908: } else {
1.37 paf 909: length=0;
1.42 paf 910: strm=0;
1.27 paf 911: }
912: break;
913: }
1.60 ! paf 914: }
1.42 paf 915:
916: const char* str=strm;
917: if(str && length)
918: {
919: // transcode to $request:charset from connect-string?client_charset
1.54 paf 920: if(cstrClientCharset)
1.42 paf 921: services.transcode(str, length,
1.53 paf 922: str, length,
1.42 paf 923: cstrClientCharset,
924: services.request_charset());
925: }
926:
1.49 paf 927: check(connection, handlers.add_row_cell(connection.sql_error, str, length));
1.1 parser 928: }
929: }
930: }
931: }
932:
933: cleanup: // no check call after this point!
934: for(int i=0; i<column_count; i++) {
935: switch(cols[i].type) {
936: case SQLT_CLOB:
937: /* free var locator */
938: OCIDescriptorFree((dvoid *) cols[i].var, (ub4)OCI_DTYPE_LOB);
939: break;
940: default:
941: break;
942: }
943: }
944:
945: if(failed) // need rethrow?
946: longjmp(saved_mark, 1);
947: }
948:
949: private: // conn client library funcs
950:
1.60 ! paf 951: friend void fail(Connection& connection, const char *msg);
1.49 paf 952: friend void check(Connection& connection, const char *step, sword status);
1.1 parser 953: friend sb4 cbf_get_data(dvoid *ctxp,
954: OCIBind *bindp,
955: ub4 iter, ub4 index,
956: dvoid **bufpp,
957: ub4 **alenp,
958: ub1 *piecep,
959: dvoid **indpp,
960: ub2 **rcodepp);
961:
962:
963: #define OCI_DECL(name, params) \
964: typedef sword (*t_OCI##name)params; t_OCI##name OCI##name
965:
966: OCI_DECL(Initialize, (ub4 mode, dvoid *ctxp,
967: dvoid * (*malocfp)(dvoid *ctxp, size_t size),
968: dvoid * (*ralocfp)(dvoid *ctxp, dvoid *memptr, size_t newsize),
969: void (*mfreefp)(dvoid *ctxp, dvoid *memptr) ));
970:
971: OCI_DECL(EnvInit, (OCIEnv **envp, ub4 mode,
972: size_t xtramem_sz, dvoid **usrmempp));
973:
974: OCI_DECL(AttrGet, (CONST dvoid *trgthndlp, ub4 trghndltyp,
975: dvoid *attributep, ub4 *sizep, ub4 attrtype,
976: OCIError *errhp));
977:
978: OCI_DECL(AttrSet, (dvoid *trgthndlp, ub4 trghndltyp, dvoid *attributep,
979: ub4 size, ub4 attrtype, OCIError *errhp));
980:
981: OCI_DECL(BindByPos, (OCIStmt *stmtp, OCIBind **bindp, OCIError *errhp,
982: ub4 position, dvoid *valuep, sb4 value_sz,
983: ub2 dty, dvoid *indp, ub2 *alenp, ub2 *rcodep,
984: ub4 maxarr_len, ub4 *curelep, ub4 mode));
985:
1.59 paf 986: OCI_DECL(BindByName, (OCIStmt *stmtp, OCIBind **bindp, OCIError *errhp,
987: text* placeholder, sb4 placeh_len, dvoid *valuep, sb4 value_sz,
988: ub2 dty, dvoid *indp, ub2 *alenp, ub2 *rcodep,
989: ub4 maxarr_len, ub4 *curelep, ub4 mode));
990:
1.1 parser 991: OCI_DECL(BindDynamic, (OCIBind *bindp, OCIError *errhp, dvoid *ictxp,
992: OCICallbackInBind icbfp, dvoid *octxp,
993: OCICallbackOutBind ocbfp));
994:
995: OCI_DECL(DefineByPos, (OCIStmt *stmtp, OCIDefine **defnp, OCIError *errhp,
996: ub4 position, dvoid *valuep, sb4 value_sz, ub2 dty,
997: dvoid *indp, ub2 *rlenp, ub2 *rcodep, ub4 mode));
998:
999: OCI_DECL(DescriptorAlloc, (CONST dvoid *parenth, dvoid **descpp,
1000: CONST ub4 type, CONST size_t xtramem_sz,
1001: dvoid **usrmempp));
1002:
1003: OCI_DECL(DescriptorFree, (dvoid *descp, CONST ub4 type));
1004:
1005:
1006: OCI_DECL(ErrorGet, (dvoid *hndlp, ub4 recordno, OraText *sqlstate,
1007: sb4 *errcodep, OraText *bufp, ub4 bufsiz, ub4 type));
1008:
1009: OCI_DECL(HandleAlloc, (CONST dvoid *parenth, dvoid **hndlpp, CONST ub4 type,
1010: CONST size_t xtramem_sz, dvoid **usrmempp));
1011:
1012: OCI_DECL(HandleFree, (dvoid *hndlp, CONST ub4 type));
1013:
1014: OCI_DECL(LobGetLength, (OCISvcCtx *svchp, OCIError *errhp,
1015: OCILobLocator *locp,
1016: ub4 *lenp));
1017:
1018: OCI_DECL(LobRead, (OCISvcCtx *svchp, OCIError *errhp, OCILobLocator *locp,
1019: ub4 *amtp, ub4 offset, dvoid *bufp, ub4 bufl,
1020: dvoid *ctxp, sb4 (*cbfp)(dvoid *ctxp,
1021: CONST dvoid *bufp,
1022: ub4 len,
1023: ub1 piece),
1024: ub2 csid, ub1 csfrm));
1025:
1026: OCI_DECL(LobWrite, (OCISvcCtx *svchp, OCIError *errhp, OCILobLocator *locp,
1027: ub4 *amtp, ub4 offset, dvoid *bufp, ub4 buflen,
1028: ub1 piece, dvoid *ctxp,
1029: sb4 (*cbfp)(dvoid *ctxp,
1030: dvoid *bufp,
1031: ub4 *len,
1032: ub1 *piece),
1033: ub2 csid, ub1 csfrm));
1034:
1035: OCI_DECL(ParamGet, (CONST dvoid *hndlp, ub4 htype, OCIError *errhp,
1036: dvoid **parmdpp, ub4 pos));
1037:
1038: OCI_DECL(ServerAttach, (OCIServer *srvhp, OCIError *errhp,
1039: CONST OraText *dblink, sb4 dblink_len, ub4 mode));
1040:
1041: OCI_DECL(ServerDetach, (OCIServer *srvhp, OCIError *errhp, ub4 mode));
1042:
1043: OCI_DECL(SessionBegin, (OCISvcCtx *svchp, OCIError *errhp, OCISession *usrhp,
1044: ub4 credt, ub4 mode));
1045:
1046: OCI_DECL(SessionEnd, (OCISvcCtx *svchp, OCIError *errhp, OCISession *usrhp,
1047: ub4 mode));
1048:
1049: OCI_DECL(StmtExecute, (OCISvcCtx *svchp, OCIStmt *stmtp, OCIError *errhp,
1050: ub4 iters, ub4 rowoff, CONST OCISnapshot *snap_in,
1051: OCISnapshot *snap_out, ub4 mode));
1052:
1053: OCI_DECL(StmtFetch, (OCIStmt *stmtp, OCIError *errhp, ub4 nrows,
1054: ub2 orientation, ub4 mode));
1055:
1056: OCI_DECL(StmtPrepare, (OCIStmt *stmtp, OCIError *errhp, CONST OraText *stmt,
1057: ub4 stmt_len, ub4 language, ub4 mode));
1058:
1059: OCI_DECL(TransCommit, (OCISvcCtx *svchp, OCIError *errhp, ub4 flags));
1060:
1061: OCI_DECL(TransRollback, (OCISvcCtx *svchp, OCIError *errhp, ub4 flags));
1062:
1063: private: // conn client library funcs linking
1064:
1065: const char *dlink(const char *dlopen_file_spec) {
1066: if(lt_dlinit())
1067: return lt_dlerror();
1068: lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
1069: if(!handle)
1070: return lt_dlerror(); //"can not open the dynamic link module";
1071:
1072: #define DSLINK(name, action) \
1073: name=(t_##name)lt_dlsym(handle, #name); \
1074: if(!name) \
1075: action;
1076:
1077: #define OCI_LINK(name) DSLINK(OCI##name, return "function OCI" #name " was not found")
1078:
1079: OCI_LINK(Initialize);
1080: OCI_LINK(EnvInit);
1081: OCI_LINK(AttrGet); OCI_LINK(AttrSet);
1.59 paf 1082: OCI_LINK(BindByPos); OCI_LINK(BindByName); OCI_LINK(BindDynamic);
1.1 parser 1083: OCI_LINK(DefineByPos);
1084: OCI_LINK(DescriptorAlloc); OCI_LINK(DescriptorFree);
1085: OCI_LINK(ErrorGet);
1086: OCI_LINK(HandleAlloc); OCI_LINK(HandleFree);
1087: OCI_LINK(LobGetLength);
1088: OCI_LINK(LobRead); OCI_LINK(LobWrite);
1089: OCI_LINK(ParamGet);
1090: OCI_LINK(ServerAttach); OCI_LINK(ServerDetach);
1091: OCI_LINK(SessionBegin); OCI_LINK(SessionEnd);
1092: OCI_LINK(StmtExecute); OCI_LINK(StmtFetch); OCI_LINK(StmtPrepare);
1093: OCI_LINK(TransCommit); OCI_LINK(TransRollback);
1094:
1095: return 0;
1096: }
1097:
1098: } *OracleSQL_driver;
1099:
1.49 paf 1100: void check(Connection& connection, const char *step, sword status) {
1.1 parser 1101:
1102: const char *msg;
1103: char reason[MAX_STRING/2];
1104:
1105: switch (status) {
1.22 paf 1106: case OCI_SUCCESS: // hurrah
1107: case OCI_SUCCESS_WITH_INFO: // ignoring. example: count(column) when column contains NULLs,
1108: // count() not counting them and gives that status
1109: return;
1.1 parser 1110: case OCI_ERROR:
1111: {
1.45 paf 1112: sb4 errcode;
1.49 paf 1113: if(OracleSQL_driver->OCIErrorGet((dvoid *)connection.errhp, (ub4)1, (text *)NULL, &errcode,
1.45 paf 1114: (text *)reason, (ub4)sizeof(reason), OCI_HTYPE_ERROR)==OCI_SUCCESS) {
1115: msg=reason;
1116:
1117: // transcode to $request:charset from connect-string?client_charset
1.49 paf 1118: if(const char* cstrClientCharset=connection.options.cstrClientCharset) {
1.45 paf 1119: if(msg) {
1120: if(size_t msg_length=strlen(msg)) {
1.49 paf 1121: connection.services->transcode(msg, msg_length,
1.45 paf 1122: msg, msg_length,
1123: cstrClientCharset,
1.49 paf 1124: connection.services->request_charset());
1.45 paf 1125: }
1.42 paf 1126: }
1127: }
1.45 paf 1128: } else
1129: msg="[can not get error description]";
1130: break;
1.1 parser 1131: }
1132: case OCI_NEED_DATA:
1133: msg="NEED_DATA"; break;
1134: case OCI_NO_DATA:
1135: msg="NODATA"; break;
1136: case OCI_INVALID_HANDLE:
1137: msg="INVALID_HANDLE"; break;
1138: case OCI_STILL_EXECUTING:
1139: msg="STILL_EXECUTE"; break;
1140: case OCI_CONTINUE:
1141: msg="CONTINUE"; break;
1142: default:
1143: msg="unknown"; break;
1144: }
1145:
1.49 paf 1146: snprintf(connection.error, sizeof(connection.error), "%s (%s, %d)",
1.22 paf 1147: msg, step, (int)status);
1.49 paf 1148: longjmp(connection.mark, 1);
1.1 parser 1149: }
1150:
1.60 ! paf 1151: void fail(Connection& connection, const char* msg) {
! 1152: snprintf(connection.error, sizeof(connection.error), "%s", msg);
! 1153: longjmp(connection.mark, 1);
! 1154: }
! 1155:
1.49 paf 1156: void check(Connection& connection, bool error) {
1.27 paf 1157: if(error)
1.49 paf 1158: longjmp(connection.mark, 1);
1.27 paf 1159: }
1.1 parser 1160:
1161: /* ----------------------------------------------------------------- */
1162: /* Intbind callback that does not do any data input. */
1163: /* ----------------------------------------------------------------- */
1.60 ! paf 1164: sb4 cbf_no_data(
1.45 paf 1165: dvoid* /*ctxp*/,
1166: OCIBind* /*bindp*/,
1167: ub4 /*iter*/, ub4 /*index*/,
1.1 parser 1168: dvoid **bufpp,
1169: ub4 *alenpp,
1170: ub1 *piecep,
1171: dvoid **indpp) {
1172: *bufpp=(dvoid *)0;
1173: *alenpp=0;
1174: static sb2 null_ind=-1;
1175: *indpp=(dvoid *) &null_ind;
1176: *piecep=OCI_ONE_PIECE;
1177:
1178: return OCI_CONTINUE;
1179: }
1180:
1181: /* ----------------------------------------------------------------- */
1182: /* Outbind callback for returning data. */
1183: /* ----------------------------------------------------------------- */
1184: static sb4 cbf_get_data(dvoid *ctxp,
1185: OCIBind *bindp,
1.45 paf 1186: ub4 /*iter*/, ub4 index,
1.1 parser 1187: dvoid **bufpp,
1188: ub4 **alenp,
1189: ub1 *piecep,
1190: dvoid **indpp,
1191: ub2 **rcodepp) {
1.60 ! paf 1192: Query_lobs::Item& context=*static_cast<Query_lobs::Item*>(ctxp);
1.1 parser 1193:
1194: if(index==0) {
1195: static ub4 rows;
1.49 paf 1196: check(*context.connection, "AttrGet cbf_get_data ROWS_RETURNED",
1.1 parser 1197: OracleSQL_driver->OCIAttrGet(
1198: (CONST dvoid *) bindp, OCI_HTYPE_BIND, (dvoid *)&rows,
1.49 paf 1199: (ub4 *)sizeof(ub2), OCI_ATTR_ROWS_RETURNED, context.connection->errhp)) ;
1.57 paf 1200: context.rows.count=(ub2)rows;
1.60 ! paf 1201: context.rows.row=(Query_lobs::return_rows::return_row *)
! 1202: context.connection->services->malloc_atomic(sizeof(Query_lobs::return_rows::return_row)*rows);
1.1 parser 1203: }
1204:
1.60 ! paf 1205: Query_lobs::return_rows::return_row &var=context.rows.row[index];
1.1 parser 1206:
1.49 paf 1207: check(*context.connection, "alloc output var desc dynamic", OracleSQL_driver->OCIDescriptorAlloc(
1208: (dvoid *) context.connection->envhp, (dvoid **)&var.locator,
1.1 parser 1209: (ub4)OCI_DTYPE_LOB,
1210: 0, (dvoid **)0));
1211:
1212: *bufpp=var.locator;
1213: *alenp=&var.len;
1214: *indpp=(dvoid *) &var.ind;
1215: *piecep=OCI_ONE_PIECE;
1216: *rcodepp=&var.rcode;
1217:
1218: return OCI_CONTINUE;
1219: }
1220:
1.55 paf 1221: static void tolower_str(char *out, const char *in, size_t size) {
1.38 paf 1222: while(size--)
1.45 paf 1223: *out++=(char)tolower(*in++);
1.1 parser 1224: }
1.55 paf 1225: static void toupper_str(char *out, const char *in, size_t size) {
1.44 paf 1226: while(size--)
1.45 paf 1227: *out++=(char)toupper(*in++);
1.44 paf 1228: }
1229:
1.1 parser 1230:
1231: extern "C" SQL_Driver *SQL_DRIVER_CREATE() {
1232: return OracleSQL_driver=new OracleSQL_Driver();
1233: }