<a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSelect">Ns_DbSelect</a> changed to allow propagate errors from low-level drivers instead of returning "Query was not a statement returning rows" all the time.
| 1 | /* |
| 2 | * The contents of this file are subject to the AOLserver Public License |
| 3 | * Version 1.1 (the "License"); you may not use this file except in |
| 4 | * compliance with the License. You may obtain a copy of the License at |
| 5 | * http://aolserver.com/. |
| 6 | * |
| 7 | * Software distributed under the License is distributed on an "AS IS" |
| 8 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See |
| 9 | * the License for the specific language governing rights and limitations |
| 10 | * under the License. |
| 11 | * |
| 12 | * The Original Code is AOLserver Code and related documentation |
| 13 | * distributed by AOL. |
| 14 | * |
| 15 | * The Initial Developer of the Original Code is America Online, |
| 16 | * Inc. Portions created by AOL are Copyright (C) 1999 America Online, |
| 17 | * Inc. All Rights Reserved. |
| 18 | * |
| 19 | * Alternatively, the contents of this file may be used under the terms |
| 20 | * of the GNU General Public License (the "GPL"), in which case the |
| 21 | * provisions of GPL are applicable instead of those above. If you wish |
| 22 | * to allow use of your version of this file only under the terms of the |
| 23 | * GPL and not to allow others to use your version of this file under the |
| 24 | * License, indicate your decision by deleting the provisions above and |
| 25 | * replace them with the notice and other provisions required by the GPL. |
| 26 | * If you do not delete the provisions above, a recipient may use your |
| 27 | * version of this file under either the License or the GPL. |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | /* |
| 32 | * dbdrv.c -- |
| 33 | * |
| 34 | * Routines for handling the loadable db driver interface. |
| 35 | */ |
| 36 | |
| 37 | static const char *RCSID = "@(#) $Header: /cvsroot-fuse/aolserver/aolserver/nsdb/dbdrv.c,v 1.2 2004/06/20 15:54:01 seryakov Exp $, compiled: " __DATE__ " " __TIME__; |
| 38 | |
| 39 | #include "db.h" |
| 40 | |
| 41 | /* |
| 42 | * The following typedefs define the functions provided by |
| 43 | * loadable drivers. |
| 44 | */ |
| 45 | |
| 46 | typedef int (InitProc) (char *server, char *module, char *driver); |
| 47 | typedef char *(NameProc) (Ns_DbHandle *); |
| 48 | typedef char *(TypeProc) (Ns_DbHandle *); |
| 49 | typedef int (OpenProc) (Ns_DbHandle *); |
| 50 | typedef void (CloseProc) (Ns_DbHandle *); |
| 51 | typedef int (DMLProc) (Ns_DbHandle *, char *sql); |
| 52 | typedef Ns_Set *(SelectProc) (Ns_DbHandle *, char *sql); |
| 53 | typedef int (<a href="/cvs/aolserver/aolserver/nsd/exec.c#A_ExecProc">ExecProc</a>) (Ns_DbHandle *, char *sql); |
| 54 | typedef Ns_Set *(BindProc) (Ns_DbHandle *); |
| 55 | typedef int (GetProc) (Ns_DbHandle *, Ns_Set *); |
| 56 | typedef int (FlushProc) (Ns_DbHandle *); |
| 57 | typedef int (CancelProc) (Ns_DbHandle *); |
| 58 | typedef int (ResetProc) (Ns_DbHandle *); |
| 59 | typedef int (SpStartProc) (Ns_DbHandle *handle, char *procname); |
| 60 | typedef int (SpSetParamProc) (Ns_DbHandle *handle, char *args); |
| 61 | typedef int (SpExecProc) (Ns_DbHandle *handle); |
| 62 | typedef int (SpReturnCodeProc) (Ns_DbHandle *dbhandle, char *returnCode, |
| 63 | int bufsize); |
| 64 | typedef Ns_Set *(SpGetParamsProc) (Ns_DbHandle *handle); |
| 65 | |
| 66 | /* |
| 67 | * The following structure specifies the driver-specific functions |
| 68 | * to call for each Ns_Db routine. |
| 69 | */ |
| 70 | |
| 71 | typedef struct DbDriver { |
| 72 | char *name; |
| 73 | int registered; |
| 74 | InitProc *initProc; |
| 75 | NameProc *nameProc; |
| 76 | TypeProc *typeProc; |
| 77 | OpenProc *openProc; |
| 78 | CloseProc *closeProc; |
| 79 | DMLProc *dmlProc; |
| 80 | SelectProc *selectProc; |
| 81 | <a href="/cvs/aolserver/aolserver/nsd/exec.c#A_ExecProc">ExecProc</a> *execProc; |
| 82 | BindProc *bindProc; |
| 83 | GetProc *getProc; |
| 84 | FlushProc *flushProc; |
| 85 | CancelProc *cancelProc; |
| 86 | ResetProc *resetProc; |
| 87 | SpStartProc *spstartProc; |
| 88 | SpSetParamProc *spsetparamProc; |
| 89 | SpExecProc *spexecProc; |
| 90 | SpReturnCodeProc *spreturncodeProc; |
| 91 | SpGetParamsProc *spgetparamsProc; |
| 92 | } DbDriver; |
| 93 | |
| 94 | /* |
| 95 | * Static variables defined in this file |
| 96 | */ |
| 97 | |
| 98 | static Tcl_HashTable driversTable; |
| 99 | |
| 100 | |
| 101 | /* |
| 102 | *---------------------------------------------------------------------- |
| 103 | * |
| 104 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbRegisterDriver">Ns_DbRegisterDriver</a> -- |
| 105 | * |
| 106 | * Register db procs for a driver. This routine is called by |
| 107 | * driver modules when loaded. |
| 108 | * |
| 109 | * Results: |
| 110 | * NS_OK if procs registered, NS_ERROR otherwise. |
| 111 | * |
| 112 | * Side effects: |
| 113 | * Driver structure is allocated and function pointers are set |
| 114 | * to the given array of procs. |
| 115 | * |
| 116 | *---------------------------------------------------------------------- |
| 117 | */ |
| 118 | |
| 119 | static void |
| 120 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_UnsupProcId">UnsupProcId</a>(char *name) |
| 121 | { |
| 122 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Warning, "dbdrv: unsupported function id '%s'", name); |
| 123 | } |
| 124 | |
| 125 | int |
| 126 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbRegisterDriver">Ns_DbRegisterDriver</a>(char *driver, Ns_DbProc *procs) |
| 127 | { |
| 128 | Tcl_HashEntry *hPtr; |
| 129 | DbDriver *driverPtr = NULL; |
| 130 | |
| 131 | hPtr = Tcl_FindHashEntry(&driversTable, driver); |
| 132 | if (hPtr == NULL) { |
| 133 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Error, "dbdrv: no such driver '%s'", driver); |
| 134 | return NS_ERROR; |
| 135 | } |
| 136 | driverPtr = (DbDriver *) Tcl_GetHashValue(hPtr); |
| 137 | if (driverPtr->registered) { |
| 138 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Error, "dbdrv: a driver is already registered as '%s'", |
| 139 | driver); |
| 140 | return NS_ERROR; |
| 141 | } |
| 142 | driverPtr->registered = 1; |
| 143 | |
| 144 | while (procs->func != NULL) { |
| 145 | switch (procs->id) { |
| 146 | case DbFn_ServerInit: |
| 147 | driverPtr->initProc = (InitProc *) procs->func; |
| 148 | break; |
| 149 | case DbFn_Name: |
| 150 | driverPtr->nameProc = (NameProc *) procs->func; |
| 151 | break; |
| 152 | case DbFn_DbType: |
| 153 | driverPtr->typeProc = (TypeProc *) procs->func; |
| 154 | break; |
| 155 | case DbFn_OpenDb: |
| 156 | driverPtr->openProc = (OpenProc *) procs->func; |
| 157 | break; |
| 158 | case DbFn_CloseDb: |
| 159 | driverPtr->closeProc = (CloseProc *) procs->func; |
| 160 | break; |
| 161 | case DbFn_DML: |
| 162 | driverPtr->dmlProc = (DMLProc *) procs->func; |
| 163 | break; |
| 164 | case DbFn_Select: |
| 165 | driverPtr->selectProc = (SelectProc *) procs->func; |
| 166 | break; |
| 167 | case DbFn_GetRow: |
| 168 | driverPtr->getProc = (GetProc *) procs->func; |
| 169 | break; |
| 170 | case DbFn_Flush: |
| 171 | driverPtr->flushProc = (FlushProc *) procs->func; |
| 172 | break; |
| 173 | case DbFn_Cancel: |
| 174 | driverPtr->cancelProc = (CancelProc *) procs->func; |
| 175 | break; |
| 176 | case DbFn_Exec: |
| 177 | driverPtr->execProc = (<a href="/cvs/aolserver/aolserver/nsd/exec.c#A_ExecProc">ExecProc</a> *) procs->func; |
| 178 | break; |
| 179 | case DbFn_BindRow: |
| 180 | driverPtr->bindProc = (BindProc *) procs->func; |
| 181 | break; |
| 182 | case DbFn_ResetHandle: |
| 183 | driverPtr->resetProc = (ResetProc *) procs->func; |
| 184 | break; |
| 185 | |
| 186 | case DbFn_SpStart: |
| 187 | driverPtr->spstartProc = (SpStartProc *) procs->func; |
| 188 | break; |
| 189 | |
| 190 | case DbFn_SpSetParam: |
| 191 | driverPtr->spsetparamProc = (SpSetParamProc *) procs->func; |
| 192 | break; |
| 193 | |
| 194 | case DbFn_SpExec: |
| 195 | driverPtr->spexecProc = (SpExecProc *) procs->func; |
| 196 | break; |
| 197 | |
| 198 | case DbFn_SpReturnCode: |
| 199 | driverPtr->spreturncodeProc = (SpReturnCodeProc *) procs->func; |
| 200 | break; |
| 201 | |
| 202 | case DbFn_SpGetParams: |
| 203 | driverPtr->spgetparamsProc = (SpGetParamsProc *) procs->func; |
| 204 | break; |
| 205 | |
| 206 | /* |
| 207 | * The following functions are no longer supported. |
| 208 | */ |
| 209 | |
| 210 | case DbFn_End: |
| 211 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_UnsupProcId">UnsupProcId</a>("End"); |
| 212 | break; |
| 213 | |
| 214 | case DbFn_GetTableInfo: |
| 215 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_UnsupProcId">UnsupProcId</a>("GetTableInfo"); |
| 216 | break; |
| 217 | |
| 218 | case DbFn_TableList: |
| 219 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_UnsupProcId">UnsupProcId</a>("TableList"); |
| 220 | break; |
| 221 | |
| 222 | case DbFn_BestRowId: |
| 223 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_UnsupProcId">UnsupProcId</a>("BestRowId"); |
| 224 | break; |
| 225 | |
| 226 | default: |
| 227 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Error, "dbdrv: unknown driver id '%d'", procs->id); |
| 228 | return NS_ERROR; |
| 229 | break; |
| 230 | } |
| 231 | ++procs; |
| 232 | } |
| 233 | |
| 234 | return NS_OK; |
| 235 | } |
| 236 | |
| 237 | |
| 238 | /* |
| 239 | *---------------------------------------------------------------------- |
| 240 | * |
| 241 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbDriverName">Ns_DbDriverName</a> -- |
| 242 | * |
| 243 | * Return the string name of the driver. |
| 244 | * |
| 245 | * Results: |
| 246 | * String name. |
| 247 | * |
| 248 | * Side effects: |
| 249 | * None. |
| 250 | * |
| 251 | *---------------------------------------------------------------------- |
| 252 | */ |
| 253 | |
| 254 | char * |
| 255 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbDriverName">Ns_DbDriverName</a>(Ns_DbHandle *handle) |
| 256 | { |
| 257 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 258 | char *name = NULL; |
| 259 | |
| 260 | if (driverPtr != NULL && driverPtr->nameProc != NULL) { |
| 261 | |
| 262 | name = (*driverPtr->nameProc)(handle); |
| 263 | } |
| 264 | |
| 265 | return name; |
| 266 | } |
| 267 | |
| 268 | |
| 269 | /* |
| 270 | *---------------------------------------------------------------------- |
| 271 | * |
| 272 | * Ns_DbDriverType -- |
| 273 | * |
| 274 | * Return the string name of the database type (e.g., "sybase"). |
| 275 | * |
| 276 | * Results: |
| 277 | * String name. |
| 278 | * |
| 279 | * Side effects: |
| 280 | * None. |
| 281 | * |
| 282 | *---------------------------------------------------------------------- |
| 283 | */ |
| 284 | |
| 285 | char * |
| 286 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbDriverDbType">Ns_DbDriverDbType</a>(Ns_DbHandle *handle) |
| 287 | { |
| 288 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 289 | |
| 290 | if (driverPtr == NULL || |
| 291 | driverPtr->typeProc == NULL || |
| 292 | handle->connected == NS_FALSE) { |
| 293 | |
| 294 | return NULL; |
| 295 | } |
| 296 | |
| 297 | return (*driverPtr->typeProc)(handle); |
| 298 | } |
| 299 | |
| 300 | |
| 301 | /* |
| 302 | *---------------------------------------------------------------------- |
| 303 | * |
| 304 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbDML">Ns_DbDML</a> -- |
| 305 | * |
| 306 | * Execute an SQL statement which is expected to be DML. |
| 307 | * |
| 308 | * Results: |
| 309 | * NS_OK or NS_ERROR. |
| 310 | * |
| 311 | * Side effects: |
| 312 | * SQL is sent to database for evaluation. |
| 313 | * |
| 314 | *---------------------------------------------------------------------- |
| 315 | */ |
| 316 | |
| 317 | int |
| 318 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbDML">Ns_DbDML</a>(Ns_DbHandle *handle, char *sql) |
| 319 | { |
| 320 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 321 | int status = NS_ERROR; |
| 322 | |
| 323 | if (driverPtr != NULL && handle->connected) { |
| 324 | |
| 325 | if (driverPtr->execProc != NULL) { |
| 326 | status = <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbExec">Ns_DbExec</a>(handle, sql); |
| 327 | if (status == NS_DML) { |
| 328 | status = NS_OK; |
| 329 | } else { |
| 330 | if (status == NS_ROWS) { |
| 331 | <a href="/cvs/aolserver/aolserver/nsdb/dbutil.c#A_Ns_DbSetException">Ns_DbSetException</a>(handle, "NSDB", |
| 332 | "Query was not a DML or DDL command."); |
| 333 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbFlush">Ns_DbFlush</a>(handle); |
| 334 | } |
| 335 | status = NS_ERROR; |
| 336 | } |
| 337 | } else if (driverPtr->dmlProc != NULL) { |
| 338 | status = (*driverPtr->dmlProc)(handle, sql); |
| 339 | <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbLogSql">NsDbLogSql</a>(handle, sql); |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | return status; |
| 344 | } |
| 345 | |
| 346 | |
| 347 | /* |
| 348 | *---------------------------------------------------------------------- |
| 349 | * |
| 350 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSelect">Ns_DbSelect</a> -- |
| 351 | * |
| 352 | * Execute an SQL statement which is expected to return rows. |
| 353 | * |
| 354 | * Results: |
| 355 | * Pointer to Ns_Set of selected columns or NULL on error. |
| 356 | * |
| 357 | * Side effects: |
| 358 | * SQL is sent to database for evaluation. |
| 359 | * |
| 360 | *---------------------------------------------------------------------- |
| 361 | */ |
| 362 | |
| 363 | Ns_Set * |
| 364 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSelect">Ns_DbSelect</a>(Ns_DbHandle *handle, char *sql) |
| 365 | { |
| 366 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 367 | Ns_Set *setPtr = NULL; |
| 368 | |
| 369 | if (driverPtr != NULL && handle->connected) { |
| 370 | |
| 371 | if (driverPtr->execProc != NULL) { |
| 372 | if (<a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbExec">Ns_DbExec</a>(handle, sql) == NS_ROWS) { |
| 373 | setPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbBindRow">Ns_DbBindRow</a>(handle); |
| 374 | } else { |
| 375 | if(!handle->dsExceptionMsg.length) |
| 376 | <a href="/cvs/aolserver/aolserver/nsdb/dbutil.c#A_Ns_DbSetException">Ns_DbSetException</a>(handle, "NSDB", |
| 377 | "Query was not a statement returning rows."); |
| 378 | } |
| 379 | } else if (driverPtr->selectProc != NULL) { |
| 380 | <a href="/cvs/aolserver/aolserver/nsd/set.c#A_Ns_SetTrunc">Ns_SetTrunc</a>(handle->row, 0); |
| 381 | setPtr = (*driverPtr->selectProc)(handle, sql); |
| 382 | <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbLogSql">NsDbLogSql</a>(handle, sql); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | return setPtr; |
| 387 | } |
| 388 | |
| 389 | |
| 390 | /* |
| 391 | *---------------------------------------------------------------------- |
| 392 | * |
| 393 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbExec">Ns_DbExec</a> -- |
| 394 | * |
| 395 | * Execute an SQL statement. |
| 396 | * |
| 397 | * Results: |
| 398 | * NS_DML, NS_ROWS, or NS_ERROR. |
| 399 | * |
| 400 | * Side effects: |
| 401 | * SQL is sent to database for evaluation. |
| 402 | * |
| 403 | *---------------------------------------------------------------------- |
| 404 | */ |
| 405 | |
| 406 | int |
| 407 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbExec">Ns_DbExec</a>(Ns_DbHandle *handle, char *sql) |
| 408 | { |
| 409 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 410 | int status = NS_ERROR; |
| 411 | |
| 412 | if (handle->connected && |
| 413 | driverPtr != NULL && |
| 414 | driverPtr->execProc != NULL) { |
| 415 | |
| 416 | status = (*driverPtr->execProc)(handle, sql); |
| 417 | <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbLogSql">NsDbLogSql</a>(handle, sql); |
| 418 | } |
| 419 | |
| 420 | return status; |
| 421 | } |
| 422 | |
| 423 | |
| 424 | /* |
| 425 | *---------------------------------------------------------------------- |
| 426 | * |
| 427 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbBindRow">Ns_DbBindRow</a> -- |
| 428 | * |
| 429 | * Bind the column names from a pending result set. This routine |
| 430 | * is normally called right after an <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbExec">Ns_DbExec</a> if the result |
| 431 | * was NS_ROWS. |
| 432 | * |
| 433 | * Results: |
| 434 | * Pointer to Ns_Set. |
| 435 | * |
| 436 | * Side effects: |
| 437 | * Column names of result rows are set in the Ns_Set. |
| 438 | * |
| 439 | *---------------------------------------------------------------------- |
| 440 | */ |
| 441 | |
| 442 | Ns_Set * |
| 443 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbBindRow">Ns_DbBindRow</a>(Ns_DbHandle *handle) |
| 444 | { |
| 445 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 446 | Ns_Set *setPtr = NULL; |
| 447 | |
| 448 | if (handle->connected && |
| 449 | driverPtr != NULL && |
| 450 | driverPtr->bindProc != NULL) { |
| 451 | |
| 452 | <a href="/cvs/aolserver/aolserver/nsd/set.c#A_Ns_SetTrunc">Ns_SetTrunc</a>(handle->row, 0); |
| 453 | setPtr = (*driverPtr->bindProc)(handle); |
| 454 | } |
| 455 | |
| 456 | return setPtr; |
| 457 | } |
| 458 | |
| 459 | |
| 460 | /* |
| 461 | *---------------------------------------------------------------------- |
| 462 | * |
| 463 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbGetRow">Ns_DbGetRow</a> -- |
| 464 | * |
| 465 | * Fetch the next row waiting in a result set. This routine |
| 466 | * is normally called repeatedly after an <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSelect">Ns_DbSelect</a> or |
| 467 | * an <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbExec">Ns_DbExec</a> and <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbBindRow">Ns_DbBindRow</a>. |
| 468 | * |
| 469 | * Results: |
| 470 | * NS_END_DATA if there are no more rows, NS_OK or NS_ERROR |
| 471 | * otherwise. |
| 472 | * |
| 473 | * Side effects: |
| 474 | * The values of the given set are filled in with those of the |
| 475 | * next row. |
| 476 | * |
| 477 | *---------------------------------------------------------------------- |
| 478 | */ |
| 479 | int |
| 480 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbGetRow">Ns_DbGetRow</a>(Ns_DbHandle *handle, Ns_Set *row) |
| 481 | { |
| 482 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 483 | int status = NS_ERROR; |
| 484 | |
| 485 | if (handle->connected && |
| 486 | driverPtr != NULL && |
| 487 | driverPtr->getProc != NULL) { |
| 488 | |
| 489 | status = (*driverPtr->getProc)(handle, row); |
| 490 | } |
| 491 | |
| 492 | return status; |
| 493 | } |
| 494 | |
| 495 | |
| 496 | /* |
| 497 | *---------------------------------------------------------------------- |
| 498 | * |
| 499 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbFlush">Ns_DbFlush</a> -- |
| 500 | * |
| 501 | * Flush rows pending in a result set. |
| 502 | * |
| 503 | * Results: |
| 504 | * NS_OK or NS_ERROR. |
| 505 | * |
| 506 | * Side effects: |
| 507 | * Rows waiting in the result set are dumped, perhaps by simply |
| 508 | * fetching them over one by one. |
| 509 | * |
| 510 | *---------------------------------------------------------------------- |
| 511 | */ |
| 512 | |
| 513 | int |
| 514 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbFlush">Ns_DbFlush</a>(Ns_DbHandle *handle) |
| 515 | { |
| 516 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 517 | int status = NS_ERROR; |
| 518 | |
| 519 | if (handle->connected && |
| 520 | driverPtr != NULL && |
| 521 | driverPtr->flushProc != NULL) { |
| 522 | |
| 523 | status = (*driverPtr->flushProc)(handle); |
| 524 | } |
| 525 | |
| 526 | return status; |
| 527 | } |
| 528 | |
| 529 | |
| 530 | /* |
| 531 | *---------------------------------------------------------------------- |
| 532 | * |
| 533 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbCancel">Ns_DbCancel</a> -- |
| 534 | * |
| 535 | * Cancel the execution of a select and dump pending rows. |
| 536 | * |
| 537 | * Results: |
| 538 | * NS_OK or NS_ERROR. |
| 539 | * |
| 540 | * Side effects: |
| 541 | * Depending on the driver, a running select call which executes |
| 542 | * as rows are fetched may be interrupted. |
| 543 | * |
| 544 | *---------------------------------------------------------------------- |
| 545 | */ |
| 546 | |
| 547 | int |
| 548 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbCancel">Ns_DbCancel</a>(Ns_DbHandle *handle) |
| 549 | { |
| 550 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 551 | int status = NS_ERROR; |
| 552 | |
| 553 | if (handle->connected && |
| 554 | driverPtr != NULL && |
| 555 | driverPtr->cancelProc != NULL) { |
| 556 | |
| 557 | status = (*driverPtr->cancelProc)(handle); |
| 558 | } |
| 559 | |
| 560 | return status; |
| 561 | } |
| 562 | |
| 563 | |
| 564 | /* |
| 565 | *---------------------------------------------------------------------- |
| 566 | * |
| 567 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbResetHandle">Ns_DbResetHandle</a> -- |
| 568 | * |
| 569 | * Reset a handle after a cancel operation. |
| 570 | * |
| 571 | * Results: |
| 572 | * NS_OK or NS_ERROR. |
| 573 | * |
| 574 | * Side effects: |
| 575 | * Handle is available for new commands. |
| 576 | * |
| 577 | *---------------------------------------------------------------------- |
| 578 | */ |
| 579 | |
| 580 | int |
| 581 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbResetHandle">Ns_DbResetHandle</a> (Ns_DbHandle *handle) |
| 582 | { |
| 583 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 584 | int status = NS_ERROR; |
| 585 | |
| 586 | if (handle->connected && |
| 587 | driverPtr != NULL && |
| 588 | driverPtr->resetProc != NULL) { |
| 589 | |
| 590 | status = (*driverPtr->resetProc)(handle); |
| 591 | } |
| 592 | |
| 593 | return status; |
| 594 | } |
| 595 | |
| 596 | |
| 597 | /* |
| 598 | *---------------------------------------------------------------------- |
| 599 | * |
| 600 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbLoadDriver">NsDbLoadDriver</a> -- |
| 601 | * |
| 602 | * Load a database driver for one or more pools. |
| 603 | * |
| 604 | * Results: |
| 605 | * Pointer to driver structure or NULL on error. |
| 606 | * |
| 607 | * Side effects: |
| 608 | * Driver module file may be mapped into the process. |
| 609 | * |
| 610 | *---------------------------------------------------------------------- |
| 611 | */ |
| 612 | |
| 613 | struct DbDriver * |
| 614 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbLoadDriver">NsDbLoadDriver</a>(char *driver) |
| 615 | { |
| 616 | Tcl_HashEntry *hPtr; |
| 617 | char *module, *path; |
| 618 | int new; |
| 619 | DbDriver *driverPtr; |
| 620 | static int initialized = NS_FALSE; |
| 621 | |
| 622 | if (initialized == NS_FALSE) { |
| 623 | Tcl_InitHashTable(&driversTable, TCL_STRING_KEYS); |
| 624 | initialized = NS_TRUE; |
| 625 | } |
| 626 | |
| 627 | hPtr = Tcl_CreateHashEntry(&driversTable, driver, &new); |
| 628 | if (new == 0) { |
| 629 | driverPtr = (DbDriver *) Tcl_GetHashValue(hPtr); |
| 630 | } else { |
| 631 | driverPtr = ns_malloc(sizeof(DbDriver)); |
| 632 | memset(driverPtr, 0, sizeof(DbDriver)); |
| 633 | driverPtr->name = Tcl_GetHashKey(&driversTable, hPtr); |
| 634 | Tcl_SetHashValue(hPtr, driverPtr); |
| 635 | module = <a href="/cvs/aolserver/aolserver/nsd/config.c#A_Ns_ConfigGetValue">Ns_ConfigGetValue</a>("ns/db/drivers", driver); |
| 636 | if (module == NULL) { |
| 637 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Error, "dbdrv: no such driver '%s'", driver); |
| 638 | } else { |
| 639 | path = <a href="/cvs/aolserver/aolserver/nsd/config.c#A_Ns_ConfigGetPath">Ns_ConfigGetPath</a>(NULL, NULL, "db", "driver", driver, NULL); |
| 640 | if (<a href="/cvs/aolserver/aolserver/nsd/modload.c#A_Ns_ModuleLoad">Ns_ModuleLoad</a>(driver, path, module, "<a href="/cvs/aolserver/nsodbc/nsodbc.c#A_Ns_DbDriverInit">Ns_DbDriverInit</a>") |
| 641 | != NS_OK) { |
| 642 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Error, "dbdrv: failed to load driver '%s'", |
| 643 | driver); |
| 644 | } |
| 645 | } |
| 646 | } |
| 647 | if (driverPtr->registered == 0) { |
| 648 | return NULL; |
| 649 | } |
| 650 | |
| 651 | return driverPtr; |
| 652 | } |
| 653 | |
| 654 | |
| 655 | /* |
| 656 | *---------------------------------------------------------------------- |
| 657 | * |
| 658 | * NsDbServerInit -- |
| 659 | * |
| 660 | * Invoke driver provided server init proc (e.g., to add driver |
| 661 | * specific Tcl commands). |
| 662 | * |
| 663 | * Results: |
| 664 | * None. |
| 665 | * |
| 666 | * Side effects: |
| 667 | * None. |
| 668 | * |
| 669 | *---------------------------------------------------------------------- |
| 670 | */ |
| 671 | |
| 672 | void |
| 673 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbDriverInit">NsDbDriverInit</a>(char *server, DbDriver *driverPtr) |
| 674 | { |
| 675 | if (driverPtr->initProc != NULL && |
| 676 | ((*driverPtr->initProc) (server, "db", driverPtr->name)) != NS_OK) { |
| 677 | |
| 678 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Warning, "dbdrv: init proc failed for driver '%s'", |
| 679 | driverPtr->name); |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | |
| 684 | /* |
| 685 | *---------------------------------------------------------------------- |
| 686 | * |
| 687 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbOpen">NsDbOpen</a> -- |
| 688 | * |
| 689 | * Open a connection to the database. This routine is called |
| 690 | * from the pool routines in dbinit.c. |
| 691 | * |
| 692 | * Results: |
| 693 | * NS_OK or NS_ERROR. |
| 694 | * |
| 695 | * Side effects: |
| 696 | * Database may be connected by driver specific routine. |
| 697 | * |
| 698 | *---------------------------------------------------------------------- |
| 699 | */ |
| 700 | |
| 701 | int |
| 702 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbOpen">NsDbOpen</a>(Ns_DbHandle *handle) |
| 703 | { |
| 704 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 705 | |
| 706 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Notice, "dbdrv: opening database '%s:%s'", handle->driver, |
| 707 | handle->datasource); |
| 708 | if (driverPtr == NULL || |
| 709 | driverPtr->openProc == NULL || |
| 710 | (*driverPtr->openProc) (handle) != NS_OK) { |
| 711 | |
| 712 | <a href="/cvs/aolserver/aolserver/nsd/log.c#A_Ns_Log">Ns_Log</a>(Error, "dbdrv: failed to open database '%s:%s'", |
| 713 | handle->driver, handle->datasource); |
| 714 | handle->connected = NS_FALSE; |
| 715 | return NS_ERROR; |
| 716 | } |
| 717 | |
| 718 | return NS_OK; |
| 719 | } |
| 720 | |
| 721 | |
| 722 | /* |
| 723 | *---------------------------------------------------------------------- |
| 724 | * |
| 725 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbClose">NsDbClose</a> -- |
| 726 | * |
| 727 | * Close a connection to the database. This routine is called |
| 728 | * from the pool routines in dbinit.c |
| 729 | * |
| 730 | * Results: |
| 731 | * None. |
| 732 | * |
| 733 | * Side effects: |
| 734 | * None. |
| 735 | * |
| 736 | *---------------------------------------------------------------------- |
| 737 | */ |
| 738 | |
| 739 | void |
| 740 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_NsDbClose">NsDbClose</a>(Ns_DbHandle *handle) |
| 741 | { |
| 742 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 743 | |
| 744 | if (handle->connected && |
| 745 | driverPtr != NULL && |
| 746 | driverPtr->closeProc != NULL) { |
| 747 | |
| 748 | (*driverPtr->closeProc)(handle); |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | |
| 753 | /* |
| 754 | *---------------------------------------------------------------------- |
| 755 | * |
| 756 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpStart">Ns_DbSpStart</a> -- |
| 757 | * |
| 758 | * Start execution of a stored procedure. |
| 759 | * |
| 760 | * Results: |
| 761 | * NS_OK/NS_ERROR. |
| 762 | * |
| 763 | * Side effects: |
| 764 | * Begins an SP; see <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpExec">Ns_DbSpExec</a>. |
| 765 | * |
| 766 | *---------------------------------------------------------------------- |
| 767 | */ |
| 768 | |
| 769 | int |
| 770 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpStart">Ns_DbSpStart</a>(Ns_DbHandle *handle, char *procname) |
| 771 | { |
| 772 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 773 | int status = NS_ERROR; |
| 774 | |
| 775 | if (handle->connected && |
| 776 | driverPtr != NULL && |
| 777 | driverPtr->spstartProc != NULL) { |
| 778 | |
| 779 | status = (*driverPtr->spstartProc)(handle, procname); |
| 780 | } |
| 781 | |
| 782 | return status; |
| 783 | } |
| 784 | |
| 785 | |
| 786 | /* |
| 787 | *---------------------------------------------------------------------- |
| 788 | * |
| 789 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpSetParam">Ns_DbSpSetParam</a> -- |
| 790 | * |
| 791 | * Set a parameter in a store procedure; must have executed |
| 792 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpStart">Ns_DbSpStart</a> first. paramname looks like "@x", paramtype is |
| 793 | * like "int" or "varchar", inout is "in" or "out", value is |
| 794 | * like "123". |
| 795 | * |
| 796 | * Results: |
| 797 | * NS_OK/NS_ERROR |
| 798 | * |
| 799 | * Side effects: |
| 800 | * None. |
| 801 | * |
| 802 | *---------------------------------------------------------------------- |
| 803 | */ |
| 804 | |
| 805 | int |
| 806 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpSetParam">Ns_DbSpSetParam</a>(Ns_DbHandle *handle, char *paramname, char *paramtype, |
| 807 | char *inout, char *value) |
| 808 | { |
| 809 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 810 | int status = NS_ERROR; |
| 811 | Ns_DString args; |
| 812 | |
| 813 | if (handle->connected && |
| 814 | driverPtr != NULL && |
| 815 | driverPtr->spsetparamProc != NULL) { |
| 816 | |
| 817 | <a href="/cvs/aolserver/aolserver/nsd/dstring.c#A_Ns_DStringInit">Ns_DStringInit</a>(&args); |
| 818 | <a href="/cvs/aolserver/aolserver/nsd/dstring.c#A_Ns_DStringVarAppend">Ns_DStringVarAppend</a>(&args, paramname, " ", paramtype, " ", inout, " ", |
| 819 | value, NULL); |
| 820 | status = (*driverPtr->spsetparamProc)(handle, args.string); |
| 821 | <a href="/cvs/aolserver/aolserver/nsd/dstring.c#A_Ns_DStringFree">Ns_DStringFree</a>(&args); |
| 822 | } |
| 823 | |
| 824 | return status; |
| 825 | } |
| 826 | |
| 827 | |
| 828 | /* |
| 829 | *---------------------------------------------------------------------- |
| 830 | * |
| 831 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpExec">Ns_DbSpExec</a> -- |
| 832 | * |
| 833 | * Run an Sp begun with <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpStart">Ns_DbSpStart</a> |
| 834 | * |
| 835 | * Results: |
| 836 | * NS_OK/NS_ERROR |
| 837 | * |
| 838 | * Side effects: |
| 839 | * None. |
| 840 | * |
| 841 | *---------------------------------------------------------------------- |
| 842 | */ |
| 843 | |
| 844 | int |
| 845 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpExec">Ns_DbSpExec</a>(Ns_DbHandle *handle) |
| 846 | { |
| 847 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 848 | int status = NS_ERROR; |
| 849 | |
| 850 | if (handle->connected && |
| 851 | driverPtr != NULL && |
| 852 | driverPtr->spexecProc != NULL) { |
| 853 | |
| 854 | status = (*driverPtr->spexecProc)(handle); |
| 855 | } |
| 856 | |
| 857 | return status; |
| 858 | } |
| 859 | |
| 860 | |
| 861 | /* |
| 862 | *---------------------------------------------------------------------- |
| 863 | * |
| 864 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpReturnCode">Ns_DbSpReturnCode</a> -- |
| 865 | * |
| 866 | * Get the return code from an SP after <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpExec">Ns_DbSpExec</a> |
| 867 | * |
| 868 | * Results: |
| 869 | * NS_OK/NSERROR |
| 870 | * |
| 871 | * Side effects: |
| 872 | * The return code is put into the passed-in buffer, which must |
| 873 | * be at least bufsize in length. |
| 874 | * |
| 875 | *---------------------------------------------------------------------- |
| 876 | */ |
| 877 | |
| 878 | int |
| 879 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpReturnCode">Ns_DbSpReturnCode</a>(Ns_DbHandle *handle, char *returnCode, int bufsize) |
| 880 | { |
| 881 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 882 | int status = NS_ERROR; |
| 883 | |
| 884 | if (handle->connected && |
| 885 | driverPtr != NULL && |
| 886 | driverPtr->spreturncodeProc != NULL) { |
| 887 | |
| 888 | status = (*driverPtr->spreturncodeProc)(handle, returnCode, bufsize); |
| 889 | } |
| 890 | |
| 891 | return status; |
| 892 | } |
| 893 | |
| 894 | |
| 895 | /* |
| 896 | *---------------------------------------------------------------------- |
| 897 | * |
| 898 | * <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpGetParams">Ns_DbSpGetParams</a> -- |
| 899 | * |
| 900 | * Get output parameters after running an SP w/ <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpExec">Ns_DbSpExec</a>. |
| 901 | * |
| 902 | * Results: |
| 903 | * NULL or a newly allocated set with output params in it. |
| 904 | * |
| 905 | * Side effects: |
| 906 | * Allocs its return value and its members. |
| 907 | * |
| 908 | *---------------------------------------------------------------------- |
| 909 | */ |
| 910 | |
| 911 | Ns_Set * |
| 912 | <a href="/cvs/aolserver/aolserver/nsdb/dbdrv.c#A_Ns_DbSpGetParams">Ns_DbSpGetParams</a>(Ns_DbHandle *handle) |
| 913 | { |
| 914 | DbDriver *driverPtr = <a href="/cvs/aolserver/aolserver/nsdb/dbinit.c#A_NsDbGetDriver">NsDbGetDriver</a>(handle); |
| 915 | Ns_Set *aset = NULL; |
| 916 | |
| 917 | <a href="/cvs/aolserver/aolserver/nsd/set.c#A_Ns_SetTrunc">Ns_SetTrunc</a>(handle->row, 0); |
| 918 | if (handle->connected && |
| 919 | driverPtr != NULL && |
| 920 | driverPtr->spgetparamsProc != NULL) { |
| 921 | |
| 922 | aset = (*driverPtr->spgetparamsProc)(handle); |
| 923 | } |
| 924 | |
| 925 | return aset; |
| 926 | } |
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