| commit | author | age | ||
| c9462d | 1 | <?php |
| S | 2 | // vim: set et ts=4 sw=4 fdm=marker: |
| 3 | // +----------------------------------------------------------------------+ | |
| 4 | // | PHP versions 4 and 5 | | |
| 5 | // +----------------------------------------------------------------------+ | |
| 6 | // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, | | |
| 7 | // | Stig. S. Bakken, Lukas Smith | | |
| 8 | // | All rights reserved. | | |
| 9 | // +----------------------------------------------------------------------+ | |
| 10 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | | |
| 11 | // | API as well as database abstraction for PHP applications. | | |
| 12 | // | This LICENSE is in the BSD license style. | | |
| 13 | // | | | |
| 14 | // | Redistribution and use in source and binary forms, with or without | | |
| 15 | // | modification, are permitted provided that the following conditions | | |
| 16 | // | are met: | | |
| 17 | // | | | |
| 18 | // | Redistributions of source code must retain the above copyright | | |
| 19 | // | notice, this list of conditions and the following disclaimer. | | |
| 20 | // | | | |
| 21 | // | Redistributions in binary form must reproduce the above copyright | | |
| 22 | // | notice, this list of conditions and the following disclaimer in the | | |
| 23 | // | documentation and/or other materials provided with the distribution. | | |
| 24 | // | | | |
| 25 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | | |
| 26 | // | Lukas Smith nor the names of his contributors may be used to endorse | | |
| 27 | // | or promote products derived from this software without specific prior| | |
| 28 | // | written permission. | | |
| 29 | // | | | |
| 30 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | | |
| 31 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | | |
| 32 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | | |
| 33 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | | |
| 34 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | | |
| 35 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | | |
| 36 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| | |
| 37 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | | |
| 38 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | | |
| 39 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| | |
| 40 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | |
| 41 | // | POSSIBILITY OF SUCH DAMAGE. | | |
| 42 | // +----------------------------------------------------------------------+ | |
| 43 | // | Author: Paul Cooper <pgc@ucecom.com> | | |
| 44 | // +----------------------------------------------------------------------+ | |
| 45 | // | |
| 46 | // $Id$ | |
| 47 | ||
| 48 | /** | |
| 49 | * MDB2 PostGreSQL driver | |
| 50 | * | |
| 51 | * @package MDB2 | |
| 52 | * @category Database | |
| 53 | * @author Paul Cooper <pgc@ucecom.com> | |
| 54 | */ | |
| 55 | class MDB2_Driver_pgsql extends MDB2_Driver_Common | |
| 56 | { | |
| 57 | // {{{ properties | |
| 58 | var $escape_quotes = "\\"; | |
| 59 | ||
| 60 | // }}} | |
| 61 | // {{{ constructor | |
| 62 | ||
| 63 | /** | |
| 64 | * Constructor | |
| 65 | */ | |
| 66 | function __construct() | |
| 67 | { | |
| 68 | parent::__construct(); | |
| 69 | ||
| 70 | $this->phptype = 'pgsql'; | |
| 71 | $this->dbsyntax = 'pgsql'; | |
| 72 | ||
| 73 | $this->supported['sequences'] = true; | |
| 74 | $this->supported['indexes'] = true; | |
| 75 | $this->supported['affected_rows'] = true; | |
| 76 | $this->supported['summary_functions'] = true; | |
| 77 | $this->supported['order_by_text'] = true; | |
| 78 | $this->supported['transactions'] = true; | |
| 79 | $this->supported['current_id'] = true; | |
| 80 | $this->supported['limit_queries'] = true; | |
| 81 | $this->supported['LOBs'] = true; | |
| 82 | $this->supported['replace'] = 'emulated'; | |
| 83 | $this->supported['sub_selects'] = true; | |
| 84 | $this->supported['auto_increment'] = 'emulated'; | |
| 85 | $this->supported['primary_key'] = true; | |
| 86 | } | |
| 87 | ||
| 88 | // }}} | |
| 89 | // {{{ errorInfo() | |
| 90 | ||
| 91 | /** | |
| 92 | * This method is used to collect information about an error | |
| 93 | * | |
| 94 | * @param integer $error | |
| 95 | * @return array | |
| 96 | * @access public | |
| 97 | */ | |
| 98 | function errorInfo($error = null) | |
| 99 | { | |
| 100 | // Fall back to MDB2_ERROR if there was no mapping. | |
| 101 | $error_code = MDB2_ERROR; | |
| 102 | ||
| 103 | $native_msg = ''; | |
| 104 | if (is_resource($error)) { | |
| 105 | $native_msg = @pg_result_error($error); | |
| 106 | } elseif ($this->connection) { | |
| 107 | $native_msg = @pg_last_error($this->connection); | |
| 108 | if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) { | |
| 109 | $native_msg = 'Database connection has been lost.'; | |
| 110 | $error_code = MDB2_ERROR_CONNECT_FAILED; | |
| 111 | } | |
| 112 | } | |
| 113 | ||
| 114 | static $error_regexps; | |
| 115 | if (empty($error_regexps)) { | |
| 116 | $error_regexps = array( | |
| 117 | '/column .* (of relation .*)?does not exist/i' | |
| 118 | => MDB2_ERROR_NOSUCHFIELD, | |
| 119 | '/(relation|sequence|table).*does not exist|class .* not found/i' | |
| 120 | => MDB2_ERROR_NOSUCHTABLE, | |
| 121 | '/index .* does not exist/' | |
| 122 | => MDB2_ERROR_NOT_FOUND, | |
| 123 | '/relation .* already exists/i' | |
| 124 | => MDB2_ERROR_ALREADY_EXISTS, | |
| 125 | '/(divide|division) by zero$/i' | |
| 126 | => MDB2_ERROR_DIVZERO, | |
| 127 | '/pg_atoi: error in .*: can\'t parse /i' | |
| 128 | => MDB2_ERROR_INVALID_NUMBER, | |
| 129 | '/invalid input syntax for( type)? (integer|numeric)/i' | |
| 130 | => MDB2_ERROR_INVALID_NUMBER, | |
| 131 | '/value .* is out of range for type \w*int/i' | |
| 132 | => MDB2_ERROR_INVALID_NUMBER, | |
| 133 | '/integer out of range/i' | |
| 134 | => MDB2_ERROR_INVALID_NUMBER, | |
| 135 | '/value too long for type character/i' | |
| 136 | => MDB2_ERROR_INVALID, | |
| 137 | '/attribute .* not found|relation .* does not have attribute/i' | |
| 138 | => MDB2_ERROR_NOSUCHFIELD, | |
| 139 | '/column .* specified in USING clause does not exist in (left|right) table/i' | |
| 140 | => MDB2_ERROR_NOSUCHFIELD, | |
| 141 | '/parser: parse error at or near/i' | |
| 142 | => MDB2_ERROR_SYNTAX, | |
| 143 | '/syntax error at/' | |
| 144 | => MDB2_ERROR_SYNTAX, | |
| 145 | '/column reference .* is ambiguous/i' | |
| 146 | => MDB2_ERROR_SYNTAX, | |
| 147 | '/permission denied/' | |
| 148 | => MDB2_ERROR_ACCESS_VIOLATION, | |
| 149 | '/violates not-null constraint/' | |
| 150 | => MDB2_ERROR_CONSTRAINT_NOT_NULL, | |
| 151 | '/violates [\w ]+ constraint/' | |
| 152 | => MDB2_ERROR_CONSTRAINT, | |
| 153 | '/referential integrity violation/' | |
| 154 | => MDB2_ERROR_CONSTRAINT, | |
| 155 | '/more expressions than target columns/i' | |
| 156 | => MDB2_ERROR_VALUE_COUNT_ON_ROW, | |
| 157 | ); | |
| 158 | } | |
| 159 | foreach ($error_regexps as $regexp => $code) { | |
| 160 | if (preg_match($regexp, $native_msg)) { | |
| 161 | $error_code = $code; | |
| 162 | break; | |
| 163 | } | |
| 164 | } | |
| 165 | ||
| 166 | return array($error_code, null, $native_msg); | |
| 167 | } | |
| 168 | ||
| 169 | // }}} | |
| 170 | // {{{ beginTransaction() | |
| 171 | ||
| 172 | /** | |
| 173 | * Start a transaction. | |
| 174 | * | |
| 175 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 176 | * @access public | |
| 177 | */ | |
| 178 | function beginTransaction() | |
| 179 | { | |
| 180 | $this->debug('starting transaction', 'beginTransaction'); | |
| 181 | if ($this->in_transaction) { | |
| 182 | return MDB2_OK; //nothing to do | |
| 183 | } | |
| 184 | if (!$this->destructor_registered && $this->opened_persistent) { | |
| 185 | $this->destructor_registered = true; | |
| 186 | register_shutdown_function('MDB2_closeOpenTransactions'); | |
| 187 | } | |
| 188 | $result = $this->_doQuery('BEGIN', true); | |
| 189 | if (PEAR::isError($result)) { | |
| 190 | return $result; | |
| 191 | } | |
| 192 | $this->in_transaction = true; | |
| 193 | return MDB2_OK; | |
| 194 | } | |
| 195 | ||
| 196 | // }}} | |
| 197 | // {{{ commit() | |
| 198 | ||
| 199 | /** | |
| 200 | * Commit the database changes done during a transaction that is in | |
| 201 | * progress. | |
| 202 | * | |
| 203 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 204 | * @access public | |
| 205 | */ | |
| 206 | function commit() | |
| 207 | { | |
| 208 | $this->debug('commit transaction', 'commit'); | |
| 209 | if (!$this->in_transaction) { | |
| 210 | return $this->raiseError(MDB2_ERROR, null, null, | |
| 211 | 'commit: transaction changes are being auto committed'); | |
| 212 | } | |
| 213 | $result = $this->_doQuery('COMMIT', true); | |
| 214 | if (PEAR::isError($result)) { | |
| 215 | return $result; | |
| 216 | } | |
| 217 | $this->in_transaction = false; | |
| 218 | return MDB2_OK; | |
| 219 | } | |
| 220 | ||
| 221 | // }}} | |
| 222 | // {{{ rollback() | |
| 223 | ||
| 224 | /** | |
| 225 | * Cancel any database changes done during a transaction that is in | |
| 226 | * progress. | |
| 227 | * | |
| 228 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 229 | * @access public | |
| 230 | */ | |
| 231 | function rollback() | |
| 232 | { | |
| 233 | $this->debug('rolling back transaction', 'rollback'); | |
| 234 | if (!$this->in_transaction) { | |
| 235 | return $this->raiseError(MDB2_ERROR, null, null, | |
| 236 | 'rollback: transactions can not be rolled back when changes are auto committed'); | |
| 237 | } | |
| 238 | $result = $this->_doQuery('ROLLBACK', true); | |
| 239 | if (PEAR::isError($result)) { | |
| 240 | return $result; | |
| 241 | } | |
| 242 | $this->in_transaction = false; | |
| 243 | return MDB2_OK; | |
| 244 | } | |
| 245 | ||
| 246 | // }}} | |
| 247 | // {{{ _doConnect() | |
| 248 | ||
| 249 | /** | |
| 250 | * Does the grunt work of connecting to the database | |
| 251 | * | |
| 252 | * @return mixed connection resource on success, MDB2 Error Object on failure | |
| 253 | * @access protected | |
| 254 | **/ | |
| 255 | function _doConnect($database_name, $persistent = false) | |
| 256 | { | |
| 257 | if ($database_name == '') { | |
| 258 | $database_name = 'template1'; | |
| 259 | } | |
| 260 | ||
| 261 | $protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp'; | |
| 262 | ||
| 263 | $params = array(''); | |
| 264 | if ($protocol == 'tcp') { | |
| 265 | if ($this->dsn['hostspec']) { | |
| 266 | $params[0].= 'host=' . $this->dsn['hostspec']; | |
| 267 | } | |
| 268 | if ($this->dsn['port']) { | |
| 269 | $params[0].= ' port=' . $this->dsn['port']; | |
| 270 | } | |
| 271 | } elseif ($protocol == 'unix') { | |
| 272 | // Allow for pg socket in non-standard locations. | |
| 273 | if ($this->dsn['socket']) { | |
| 274 | $params[0].= 'host=' . $this->dsn['socket']; | |
| 275 | } | |
| 276 | if ($this->dsn['port']) { | |
| 277 | $params[0].= ' port=' . $this->dsn['port']; | |
| 278 | } | |
| 279 | } | |
| 280 | if ($database_name) { | |
| 281 | $params[0].= ' dbname=\'' . addslashes($database_name) . '\''; | |
| 282 | } | |
| 283 | if ($this->dsn['username']) { | |
| 284 | $params[0].= ' user=\'' . addslashes($this->dsn['username']) . '\''; | |
| 285 | } | |
| 286 | if ($this->dsn['password']) { | |
| 287 | $params[0].= ' password=\'' . addslashes($this->dsn['password']) . '\''; | |
| 288 | } | |
| 289 | if (!empty($this->dsn['options'])) { | |
| 290 | $params[0].= ' options=' . $this->dsn['options']; | |
| 291 | } | |
| 292 | if (!empty($this->dsn['tty'])) { | |
| 293 | $params[0].= ' tty=' . $this->dsn['tty']; | |
| 294 | } | |
| 295 | if (!empty($this->dsn['connect_timeout'])) { | |
| 296 | $params[0].= ' connect_timeout=' . $this->dsn['connect_timeout']; | |
| 297 | } | |
| 298 | if (!empty($this->dsn['sslmode'])) { | |
| 299 | $params[0].= ' sslmode=' . $this->dsn['sslmode']; | |
| 300 | } | |
| 301 | if (!empty($this->dsn['service'])) { | |
| 302 | $params[0].= ' service=' . $this->dsn['service']; | |
| 303 | } | |
| 304 | ||
| 305 | if (isset($this->dsn['new_link']) | |
| 306 | && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true)) | |
| 307 | { | |
| 308 | if (version_compare(phpversion(), '4.3.0', '>=')) { | |
| 309 | $params[] = PGSQL_CONNECT_FORCE_NEW; | |
| 310 | } | |
| 311 | } | |
| 312 | ||
| 313 | $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect'; | |
| 314 | ||
| 315 | putenv('PGDATESTYLE=ISO'); | |
| 316 | ||
| 317 | @ini_set('track_errors', true); | |
| 318 | $php_errormsg = ''; | |
| 319 | $connection = @call_user_func_array($connect_function, $params); | |
| 320 | @ini_restore('track_errors'); | |
| 321 | if (!$connection) { | |
| 322 | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, | |
| 323 | null, null, strip_tags($php_errormsg)); | |
| 324 | } | |
| 325 | return $connection; | |
| 326 | } | |
| 327 | ||
| 328 | // }}} | |
| 329 | // {{{ connect() | |
| 330 | ||
| 331 | /** | |
| 332 | * Connect to the database | |
| 333 | * | |
| 334 | * @return true on success, MDB2 Error Object on failure | |
| 335 | * @access public | |
| 336 | **/ | |
| 337 | function connect() | |
| 338 | { | |
| 339 | if (is_resource($this->connection)) { | |
| 340 | if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 | |
| 341 | && $this->connected_database_name == $this->database_name | |
| 342 | && ($this->opened_persistent == $this->options['persistent']) | |
| 343 | ) { | |
| 344 | return MDB2_OK; | |
| 345 | } | |
| 346 | $this->disconnect(false); | |
| 347 | } | |
| 348 | ||
| 349 | if (!PEAR::loadExtension($this->phptype)) { | |
| 350 | return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, | |
| 351 | 'connect: extension '.$this->phptype.' is not compiled into PHP'); | |
| 352 | } | |
| 353 | ||
| 354 | if ($this->database_name) { | |
| 355 | $connection = $this->_doConnect($this->database_name, $this->options['persistent']); | |
| 356 | if (PEAR::isError($connection)) { | |
| 357 | return $connection; | |
| 358 | } | |
| 359 | $this->connection = $connection; | |
| 360 | $this->connected_dsn = $this->dsn; | |
| 361 | $this->connected_database_name = $this->database_name; | |
| 362 | $this->opened_persistent = $this->options['persistent']; | |
| 363 | $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype; | |
| 364 | } | |
| 365 | return MDB2_OK; | |
| 366 | } | |
| 367 | ||
| 368 | // }}} | |
| 369 | // {{{ disconnect() | |
| 370 | ||
| 371 | /** | |
| 372 | * Log out and disconnect from the database. | |
| 373 | * | |
| 374 | * @return mixed true on success, false if not connected and error | |
| 375 | * object on error | |
| 376 | * @access public | |
| 377 | */ | |
| 378 | function disconnect($force = true) | |
| 379 | { | |
| 380 | if (is_resource($this->connection)) { | |
| 381 | if (!$this->opened_persistent || $force) { | |
| 382 | @pg_close($this->connection); | |
| 383 | } | |
| 384 | $this->connection = 0; | |
| 385 | } | |
| 386 | return MDB2_OK; | |
| 387 | } | |
| 388 | ||
| 389 | // }}} | |
| 390 | // {{{ standaloneQuery() | |
| 391 | ||
| 392 | /** | |
| 393 | * execute a query as DBA | |
| 394 | * | |
| 395 | * @param string $query the SQL query | |
| 396 | * @param mixed $types array that contains the types of the columns in | |
| 397 | * the result set | |
| 398 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 399 | * @access public | |
| 400 | */ | |
| 401 | function &standaloneQuery($query, $types = null) | |
| 402 | { | |
| 403 | $connection = $this->_doConnect('template1', false); | |
| 404 | if (PEAR::isError($connection)) { | |
| 405 | $err =& $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, | |
| 406 | 'Cannot connect to template1'); | |
| 407 | return $err; | |
| 408 | } | |
| 409 | ||
| 410 | $isManip = MDB2::isManip($query); | |
| 411 | $offset = $this->row_offset; | |
| 412 | $limit = $this->row_limit; | |
| 413 | $this->row_offset = $this->row_limit = 0; | |
| 414 | $query = $this->_modifyQuery($query, $isManip, $limit, $offset); | |
| 415 | ||
| 416 | $result = $this->_doQuery($query, $isManip, $connection, false); | |
| 417 | @pg_close($connection); | |
| 418 | if (PEAR::isError($result)) { | |
| 419 | return $result; | |
| 420 | } | |
| 421 | ||
| 422 | if ($isManip) { | |
| 423 | return $result; | |
| 424 | } | |
| 425 | ||
| 426 | $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset); | |
| 427 | return $result; | |
| 428 | } | |
| 429 | ||
| 430 | // }}} | |
| 431 | // {{{ _doQuery() | |
| 432 | ||
| 433 | /** | |
| 434 | * Execute a query | |
| 435 | * @param string $query query | |
| 436 | * @param boolean $isManip if the query is a manipulation query | |
| 437 | * @param resource $connection | |
| 438 | * @param string $database_name | |
| 439 | * @return result or error object | |
| 440 | * @access protected | |
| 441 | */ | |
| 442 | function _doQuery($query, $isManip = false, $connection = null, $database_name = null) | |
| 443 | { | |
| 444 | $this->last_query = $query; | |
| 445 | $this->debug($query, 'query'); | |
| 446 | if ($this->options['disable_query']) { | |
| 447 | if ($isManip) { | |
| 448 | return 0; | |
| 449 | } | |
| 450 | return null; | |
| 451 | } | |
| 452 | ||
| 453 | if (is_null($connection)) { | |
| 454 | $err = $this->connect(); | |
| 455 | if (PEAR::isError($err)) { | |
| 456 | return $err; | |
| 457 | } | |
| 458 | $connection = $this->connection; | |
| 459 | } | |
| 460 | ||
| 461 | $result = @pg_query($connection, $query); | |
| 462 | if (!$result) { | |
| 463 | return $this->raiseError(); | |
| 464 | } | |
| 465 | ||
| 466 | if ($isManip) { | |
| 467 | return @pg_affected_rows($result); | |
| 468 | } elseif (!preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|FETCH|SHOW)\s/si', $query)) { | |
| 469 | return 0; | |
| 470 | } | |
| 471 | return $result; | |
| 472 | } | |
| 473 | ||
| 474 | // }}} | |
| 475 | // {{{ _modifyQuery() | |
| 476 | ||
| 477 | /** | |
| 478 | * Changes a query string for various DBMS specific reasons | |
| 479 | * | |
| 480 | * @param string $query query to modify | |
| 481 | * @return the new (modified) query | |
| 482 | * @access protected | |
| 483 | */ | |
| 484 | function _modifyQuery($query, $isManip, $limit, $offset) | |
| 485 | { | |
| 486 | if ($limit > 0 | |
| 487 | && !preg_match('/LIMIT\s*\d(\s*(,|OFFSET)\s*\d+)?/i', $query) | |
| 488 | ) { | |
| 489 | $query = rtrim($query); | |
| 490 | if (substr($query, -1) == ';') { | |
| 491 | $query = substr($query, 0, -1); | |
| 492 | } | |
| 493 | if ($isManip) { | |
| 494 | $manip = preg_replace('/^(DELETE FROM|UPDATE).*$/', '\\1', $query); | |
| 495 | $from = $match[2]; | |
| 496 | $where = $match[3]; | |
| 497 | $query = $manip.' '.$from.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')'; | |
| 498 | } else { | |
| 499 | $query.= " LIMIT $limit OFFSET $offset"; | |
| 500 | } | |
| 501 | } | |
| 502 | return $query; | |
| 503 | } | |
| 504 | ||
| 505 | // }}} | |
| 506 | // {{{ nextID() | |
| 507 | ||
| 508 | /** | |
| 509 | * returns the next free id of a sequence | |
| 510 | * | |
| 511 | * @param string $seq_name name of the sequence | |
| 512 | * @param boolean $ondemand when true the seqence is | |
| 513 | * automatic created, if it | |
| 514 | * not exists | |
| 515 | * @return mixed MDB2 Error Object or id | |
| 516 | * @access public | |
| 517 | */ | |
| 518 | function nextID($seq_name, $ondemand = true) | |
| 519 | { | |
| 520 | $sequence_name = $this->getSequenceName($seq_name); | |
| 521 | $query = "SELECT NEXTVAL('$sequence_name')"; | |
| 522 | $this->expectError(MDB2_ERROR_NOSUCHTABLE); | |
| 523 | $result = $this->queryOne($query, 'integer'); | |
| 524 | $this->popExpect(); | |
| 525 | if (PEAR::isError($result)) { | |
| 526 | if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) { | |
| 527 | $this->loadModule('Manager'); | |
| 528 | $result = $this->manager->createSequence($seq_name, 1); | |
| 529 | if (PEAR::isError($result)) { | |
| 530 | return $this->raiseError(MDB2_ERROR, null, null, | |
| 531 | 'nextID: on demand sequence could not be created'); | |
| 532 | } | |
| 533 | return $this->nextId($seq_name, false); | |
| 534 | } | |
| 535 | } | |
| 536 | return $result; | |
| 537 | } | |
| 538 | ||
| 539 | // }}} | |
| 540 | // {{{ currID() | |
| 541 | ||
| 542 | /** | |
| 543 | * returns the current id of a sequence | |
| 544 | * | |
| 545 | * @param string $seq_name name of the sequence | |
| 546 | * @return mixed MDB2 Error Object or id | |
| 547 | * @access public | |
| 548 | */ | |
| 549 | function currID($seq_name) | |
| 550 | { | |
| 551 | $sequence_name = $this->getSequenceName($seq_name); | |
| 552 | return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer'); | |
| 553 | } | |
| 554 | } | |
| 555 | ||
| 556 | class MDB2_Result_pgsql extends MDB2_Result_Common | |
| 557 | { | |
| 558 | // }}} | |
| 559 | // {{{ fetchRow() | |
| 560 | ||
| 561 | /** | |
| 562 | * Fetch a row and insert the data into an existing array. | |
| 563 | * | |
| 564 | * @param int $fetchmode how the array data should be indexed | |
| 565 | * @param int $rownum number of the row where the data can be found | |
| 566 | * @return int data array on success, a MDB2 error on failure | |
| 567 | * @access public | |
| 568 | */ | |
| 569 | function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) | |
| 570 | { | |
| 571 | if (!is_null($rownum)) { | |
| 572 | $seek = $this->seek($rownum); | |
| 573 | if (PEAR::isError($seek)) { | |
| 574 | return $seek; | |
| 575 | } | |
| 576 | } | |
| 577 | if ($fetchmode == MDB2_FETCHMODE_DEFAULT) { | |
| 578 | $fetchmode = $this->db->fetchmode; | |
| 579 | } | |
| 580 | if ($fetchmode & MDB2_FETCHMODE_ASSOC) { | |
| 581 | $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC); | |
| 582 | if (is_array($row) | |
| 583 | && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE | |
| 584 | ) { | |
| 585 | $row = array_change_key_case($row, $this->db->options['field_case']); | |
| 586 | } | |
| 587 | } else { | |
| 588 | $row = @pg_fetch_row($this->result); | |
| 589 | } | |
| 590 | if (!$row) { | |
| 591 | if (is_null($this->result)) { | |
| 592 | $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 593 | 'fetchRow: resultset has already been freed'); | |
| 594 | return $err; | |
| 595 | } | |
| 596 | $null = null; | |
| 597 | return $null; | |
| 598 | } | |
| 599 | if ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL) { | |
| 600 | $this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_EMPTY_TO_NULL); | |
| 601 | } | |
| 602 | if (!empty($this->values)) { | |
| 603 | $this->_assignBindColumns($row); | |
| 604 | } | |
| 605 | if (!empty($this->types)) { | |
| 606 | $row = $this->db->datatype->convertResultRow($this->types, $row); | |
| 607 | } | |
| 608 | if ($fetchmode === MDB2_FETCHMODE_OBJECT) { | |
| 609 | $object_class = $this->db->options['fetch_class']; | |
| 610 | if ($object_class == 'stdClass') { | |
| 611 | $row = (object) $row; | |
| 612 | } else { | |
| 613 | $row = &new $object_class($row); | |
| 614 | } | |
| 615 | } | |
| 616 | ++$this->rownum; | |
| 617 | return $row; | |
| 618 | } | |
| 619 | ||
| 620 | // }}} | |
| 621 | // {{{ _getColumnNames() | |
| 622 | ||
| 623 | /** | |
| 624 | * Retrieve the names of columns returned by the DBMS in a query result. | |
| 625 | * | |
| 626 | * @return mixed an associative array variable | |
| 627 | * that will hold the names of columns. The | |
| 628 | * indexes of the array are the column names | |
| 629 | * mapped to lower case and the values are the | |
| 630 | * respective numbers of the columns starting | |
| 631 | * from 0. Some DBMS may not return any | |
| 632 | * columns when the result set does not | |
| 633 | * contain any rows. | |
| 634 | * | |
| 635 | * a MDB2 error on failure | |
| 636 | * @access private | |
| 637 | */ | |
| 638 | function _getColumnNames() | |
| 639 | { | |
| 640 | $columns = array(); | |
| 641 | $numcols = $this->numCols(); | |
| 642 | if (PEAR::isError($numcols)) { | |
| 643 | return $numcols; | |
| 644 | } | |
| 645 | for ($column = 0; $column < $numcols; $column++) { | |
| 646 | $column_name = @pg_field_name($this->result, $column); | |
| 647 | $columns[$column_name] = $column; | |
| 648 | } | |
| 649 | if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | |
| 650 | $columns = array_change_key_case($columns, $this->db->options['field_case']); | |
| 651 | } | |
| 652 | return $columns; | |
| 653 | } | |
| 654 | ||
| 655 | // }}} | |
| 656 | // {{{ numCols() | |
| 657 | ||
| 658 | /** | |
| 659 | * Count the number of columns returned by the DBMS in a query result. | |
| 660 | * | |
| 661 | * @access public | |
| 662 | * @return mixed integer value with the number of columns, a MDB2 error | |
| 663 | * on failure | |
| 664 | */ | |
| 665 | function numCols() | |
| 666 | { | |
| 667 | $cols = @pg_num_fields($this->result); | |
| 668 | if (is_null($cols)) { | |
| 669 | if (is_null($this->result)) { | |
| 670 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 671 | 'numCols: resultset has already been freed'); | |
| 672 | } | |
| 673 | return $this->db->raiseError(); | |
| 674 | } | |
| 675 | return $cols; | |
| 676 | } | |
| 677 | ||
| 678 | // }}} | |
| 679 | // {{{ free() | |
| 680 | ||
| 681 | /** | |
| 682 | * Free the internal resources associated with result. | |
| 683 | * | |
| 684 | * @return boolean true on success, false if result is invalid | |
| 685 | * @access public | |
| 686 | */ | |
| 687 | function free() | |
| 688 | { | |
| 689 | $free = @pg_free_result($this->result); | |
| 690 | if (!$free) { | |
| 691 | if (is_null($this->result)) { | |
| 692 | return MDB2_OK; | |
| 693 | } | |
| 694 | return $this->db->raiseError(); | |
| 695 | } | |
| 696 | $this->result = null; | |
| 697 | return MDB2_OK; | |
| 698 | } | |
| 699 | } | |
| 700 | ||
| 701 | class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql | |
| 702 | { | |
| 703 | // {{{ seek() | |
| 704 | ||
| 705 | /** | |
| 706 | * seek to a specific row in a result set | |
| 707 | * | |
| 708 | * @param int $rownum number of the row where the data can be found | |
| 709 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 710 | * @access public | |
| 711 | */ | |
| 712 | function seek($rownum = 0) | |
| 713 | { | |
| 714 | if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) { | |
| 715 | if (is_null($this->result)) { | |
| 716 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 717 | 'seek: resultset has already been freed'); | |
| 718 | } | |
| 719 | return $this->db->raiseError(MDB2_ERROR_INVALID, null, null, | |
| 720 | 'seek: tried to seek to an invalid row number ('.$rownum.')'); | |
| 721 | } | |
| 722 | $this->rownum = $rownum - 1; | |
| 723 | return MDB2_OK; | |
| 724 | } | |
| 725 | ||
| 726 | // }}} | |
| 727 | // {{{ valid() | |
| 728 | ||
| 729 | /** | |
| 730 | * check if the end of the result set has been reached | |
| 731 | * | |
| 732 | * @return mixed true or false on sucess, a MDB2 error on failure | |
| 733 | * @access public | |
| 734 | */ | |
| 735 | function valid() | |
| 736 | { | |
| 737 | $numrows = $this->numRows(); | |
| 738 | if (PEAR::isError($numrows)) { | |
| 739 | return $numrows; | |
| 740 | } | |
| 741 | return $this->rownum < ($numrows - 1); | |
| 742 | } | |
| 743 | ||
| 744 | // }}} | |
| 745 | // {{{ numRows() | |
| 746 | ||
| 747 | /** | |
| 748 | * returns the number of rows in a result object | |
| 749 | * | |
| 750 | * @return mixed MDB2 Error Object or the number of rows | |
| 751 | * @access public | |
| 752 | */ | |
| 753 | function numRows() | |
| 754 | { | |
| 755 | $rows = @pg_num_rows($this->result); | |
| 756 | if (is_null($rows)) { | |
| 757 | if (is_null($this->result)) { | |
| 758 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 759 | 'numRows: resultset has already been freed'); | |
| 760 | } | |
| 761 | return $this->raiseError(); | |
| 762 | } | |
| 763 | return $rows; | |
| 764 | } | |
| 765 | } | |
| 766 | ||
| 767 | class MDB2_Statement_pgsql extends MDB2_Statement_Common | |
| 768 | { | |
| 769 | ||
| 770 | } | |
| 771 | ?> | |
