| 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, Frank M. Kromann | | |
| 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: Frank M. Kromann <frank@kromann.info> | | |
| 44 | // +----------------------------------------------------------------------+ | |
| 45 | // | |
| 46 | // $Id$ | |
| 47 | // | |
| 48 | // {{{ Class MDB2_Driver_mssql | |
| 49 | /** | |
| 50 | * MDB2 MSSQL Server driver | |
| 51 | * | |
| 52 | * @package MDB2 | |
| 53 | * @category Database | |
| 54 | * @author Frank M. Kromann <frank@kromann.info> | |
| 55 | */ | |
| 56 | class MDB2_Driver_mssql extends MDB2_Driver_Common | |
| 57 | { | |
| 58 | // {{{ properties | |
| 59 | var $escape_quotes = "'"; | |
| 60 | ||
| 61 | // }}} | |
| 62 | // {{{ constructor | |
| 63 | ||
| 64 | /** | |
| 65 | * Constructor | |
| 66 | */ | |
| 67 | function __construct() | |
| 68 | { | |
| 69 | parent::__construct(); | |
| 70 | ||
| 71 | $this->phptype = 'mssql'; | |
| 72 | $this->dbsyntax = 'mssql'; | |
| 73 | ||
| 74 | $this->supported['sequences'] = 'emulated'; | |
| 75 | $this->supported['indexes'] = true; | |
| 76 | $this->supported['affected_rows'] = true; | |
| 77 | $this->supported['transactions'] = true; | |
| 78 | $this->supported['summary_functions'] = true; | |
| 79 | $this->supported['order_by_text'] = true; | |
| 80 | $this->supported['current_id'] = 'emulated'; | |
| 81 | $this->supported['limit_queries'] = 'emulated'; | |
| 82 | $this->supported['LOBs'] = true; | |
| 83 | $this->supported['replace'] = 'emulated'; | |
| 84 | $this->supported['sub_selects'] = true; | |
| 85 | $this->supported['auto_increment'] = true; | |
| 86 | $this->supported['primary_key'] = true; | |
| 87 | ||
| 88 | $this->options['database_device'] = false; | |
| 89 | $this->options['database_size'] = false; | |
| 90 | } | |
| 91 | ||
| 92 | // }}} | |
| 93 | // {{{ errorInfo() | |
| 94 | ||
| 95 | /** | |
| 96 | * This method is used to collect information about an error | |
| 97 | * | |
| 98 | * @param integer $error | |
| 99 | * @return array | |
| 100 | * @access public | |
| 101 | */ | |
| 102 | function errorInfo($error = null) | |
| 103 | { | |
| 104 | $native_code = null; | |
| 105 | if ($this->connection) { | |
| 106 | $result = @mssql_query('select @@ERROR as ErrorCode', $this->connection); | |
| 107 | if ($result) { | |
| 108 | $native_code = @mssql_result($result, 0, 0); | |
| 109 | @mssql_free_result($result); | |
| 110 | } | |
| 111 | } | |
| 112 | $native_msg = @mssql_get_last_message(); | |
| 113 | if (is_null($error)) { | |
| 114 | static $ecode_map; | |
| 115 | if (empty($ecode_map)) { | |
| 116 | $ecode_map = array( | |
| 117 | 110 => MDB2_ERROR_VALUE_COUNT_ON_ROW, | |
| 118 | 155 => MDB2_ERROR_NOSUCHFIELD, | |
| 119 | 170 => MDB2_ERROR_SYNTAX, | |
| 120 | 207 => MDB2_ERROR_NOSUCHFIELD, | |
| 121 | 208 => MDB2_ERROR_NOSUCHTABLE, | |
| 122 | 245 => MDB2_ERROR_INVALID_NUMBER, | |
| 123 | 515 => MDB2_ERROR_CONSTRAINT_NOT_NULL, | |
| 124 | 547 => MDB2_ERROR_CONSTRAINT, | |
| 125 | 1913 => MDB2_ERROR_ALREADY_EXISTS, | |
| 126 | 2627 => MDB2_ERROR_CONSTRAINT, | |
| 127 | 2714 => MDB2_ERROR_ALREADY_EXISTS, | |
| 128 | 3701 => MDB2_ERROR_NOSUCHTABLE, | |
| 129 | 8134 => MDB2_ERROR_DIVZERO, | |
| 130 | ); | |
| 131 | } | |
| 132 | if (isset($ecode_map[$native_code])) { | |
| 133 | if ($native_code == 3701 | |
| 134 | && preg_match('/Cannot drop the index/i', $native_msg) | |
| 135 | ) { | |
| 136 | $error = MDB2_ERROR_NOT_FOUND; | |
| 137 | } else { | |
| 138 | $error = $ecode_map[$native_code]; | |
| 139 | } | |
| 140 | } | |
| 141 | } | |
| 142 | return array($error, $native_code, $native_msg); | |
| 143 | } | |
| 144 | ||
| 145 | // }}} | |
| 146 | // {{{ quoteIdentifier() | |
| 147 | ||
| 148 | /** | |
| 149 | * Quote a string so it can be safely used as a table / column name | |
| 150 | * | |
| 151 | * Quoting style depends on which database driver is being used. | |
| 152 | * | |
| 153 | * @param string $str identifier name to be quoted | |
| 154 | * | |
| 155 | * @return string quoted identifier string | |
| 156 | * | |
| 157 | * @since 1.6.0 | |
| 158 | * @access public | |
| 159 | */ | |
| 160 | function quoteIdentifier($str) | |
| 161 | { | |
| 162 | return '[' . str_replace(']', ']]', $str) . ']'; | |
| 163 | } | |
| 164 | ||
| 165 | // }}} | |
| 166 | // {{{ beginTransaction() | |
| 167 | ||
| 168 | /** | |
| 169 | * Start a transaction. | |
| 170 | * | |
| 171 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 172 | * @access public | |
| 173 | */ | |
| 174 | function beginTransaction() | |
| 175 | { | |
| 176 | $this->debug('starting transaction', 'beginTransaction'); | |
| 177 | if ($this->in_transaction) { | |
| 178 | return MDB2_OK; //nothing to do | |
| 179 | } | |
| 180 | if (!$this->destructor_registered && $this->opened_persistent) { | |
| 181 | $this->destructor_registered = true; | |
| 182 | register_shutdown_function('MDB2_closeOpenTransactions'); | |
| 183 | } | |
| 184 | $result = $this->_doQuery('BEGIN TRANSACTION', true); | |
| 185 | if (PEAR::isError($result)) { | |
| 186 | return $result; | |
| 187 | } | |
| 188 | $this->in_transaction = true; | |
| 189 | return MDB2_OK; | |
| 190 | } | |
| 191 | ||
| 192 | // }}} | |
| 193 | // {{{ commit() | |
| 194 | ||
| 195 | /** | |
| 196 | * Commit the database changes done during a transaction that is in | |
| 197 | * progress. | |
| 198 | * | |
| 199 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 200 | * @access public | |
| 201 | */ | |
| 202 | function commit() | |
| 203 | { | |
| 204 | $this->debug('commit transaction', 'commit'); | |
| 205 | if (!$this->in_transaction) { | |
| 206 | return $this->raiseError(MDB2_ERROR, null, null, | |
| 207 | 'commit: transaction changes are being auto committed'); | |
| 208 | } | |
| 209 | $result = $this->_doQuery('COMMIT TRANSACTION', true); | |
| 210 | if (PEAR::isError($result)) { | |
| 211 | return $result; | |
| 212 | } | |
| 213 | $this->in_transaction = false; | |
| 214 | return MDB2_OK; | |
| 215 | } | |
| 216 | ||
| 217 | // }}} | |
| 218 | // {{{ rollback() | |
| 219 | ||
| 220 | /** | |
| 221 | * Cancel any database changes done during a transaction that is in | |
| 222 | * progress. | |
| 223 | * | |
| 224 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 225 | * @access public | |
| 226 | */ | |
| 227 | function rollback() | |
| 228 | { | |
| 229 | $this->debug('rolling back transaction', 'rollback'); | |
| 230 | if (!$this->in_transaction) { | |
| 231 | return $this->raiseError(MDB2_ERROR, null, null, | |
| 232 | 'rollback: transactions can not be rolled back when changes are auto committed'); | |
| 233 | } | |
| 234 | $result = $this->_doQuery('ROLLBACK TRANSACTION', true); | |
| 235 | if (PEAR::isError($result)) { | |
| 236 | return $result; | |
| 237 | } | |
| 238 | $this->in_transaction = false; | |
| 239 | return MDB2_OK; | |
| 240 | } | |
| 241 | ||
| 242 | // }}} | |
| 243 | // {{{ connect() | |
| 244 | ||
| 245 | /** | |
| 246 | * Connect to the database | |
| 247 | * | |
| 248 | * @return true on success, MDB2 Error Object on failure | |
| 249 | */ | |
| 250 | function connect() | |
| 251 | { | |
| 252 | if (is_resource($this->connection)) { | |
| 253 | if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 | |
| 254 | && $this->opened_persistent == $this->options['persistent'] | |
| 255 | ) { | |
| 256 | return MDB2_OK; | |
| 257 | } | |
| 258 | $this->disconnect(false); | |
| 259 | } | |
| 260 | ||
| 261 | if (!PEAR::loadExtension($this->phptype)) { | |
| 262 | return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, | |
| 263 | 'connect: extension '.$this->phptype.' is not compiled into PHP'); | |
| 264 | } | |
| 265 | ||
| 266 | $params = array( | |
| 267 | $this->dsn['hostspec'] ? $this->dsn['hostspec'] : 'localhost', | |
| 268 | $this->dsn['username'] ? $this->dsn['username'] : null, | |
| 269 | $this->dsn['password'] ? $this->dsn['password'] : null, | |
| 270 | ); | |
| 271 | if ($this->dsn['port']) { | |
| 272 | $params[0].= ((substr(PHP_OS, 0, 3) == 'WIN') ? ',' : ':') | |
| 273 | . $this->dsn['port']; | |
| 274 | } | |
| 275 | ||
| 276 | $connect_function = $this->options['persistent'] ? 'mssql_pconnect' : 'mssql_connect'; | |
| 277 | ||
| 278 | $connection = @call_user_func_array($connect_function, $params); | |
| 279 | if ($connection <= 0) { | |
| 280 | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED); | |
| 281 | } | |
| 282 | ||
| 283 | $this->connection = $connection; | |
| 284 | $this->connected_dsn = $this->dsn; | |
| 285 | $this->connected_database_name = ''; | |
| 286 | $this->opened_persistent = $this->options['persistent']; | |
| 287 | $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype; | |
| 288 | ||
| 289 | if ((bool) ini_get('mssql.datetimeconvert')) { | |
| 290 | ini_set('mssql.datetimeconvert', '0'); | |
| 291 | } | |
| 292 | @mssql_query('SET DATEFORMAT ymd', $this->connection); | |
| 293 | ||
| 294 | return MDB2_OK; | |
| 295 | } | |
| 296 | ||
| 297 | // }}} | |
| 298 | // {{{ disconnect() | |
| 299 | ||
| 300 | /** | |
| 301 | * Log out and disconnect from the database. | |
| 302 | * | |
| 303 | * @return mixed true on success, false if not connected and error | |
| 304 | * object on error | |
| 305 | * @access public | |
| 306 | */ | |
| 307 | function disconnect($force = true) | |
| 308 | { | |
| 309 | if (is_resource($this->connection)) { | |
| 310 | if (!$this->opened_persistent || $force) { | |
| 311 | @mssql_close($this->connection); | |
| 312 | } | |
| 313 | $this->connection = 0; | |
| 314 | } | |
| 315 | return MDB2_OK; | |
| 316 | } | |
| 317 | ||
| 318 | // }}} | |
| 319 | // {{{ _doQuery() | |
| 320 | ||
| 321 | /** | |
| 322 | * Execute a query | |
| 323 | * @param string $query query | |
| 324 | * @param boolean $isManip if the query is a manipulation query | |
| 325 | * @param resource $connection | |
| 326 | * @param string $database_name | |
| 327 | * @return result or error object | |
| 328 | * @access protected | |
| 329 | */ | |
| 330 | function _doQuery($query, $isManip = false, $connection = null, $database_name = null) | |
| 331 | { | |
| 332 | $this->last_query = $query; | |
| 333 | $this->debug($query, 'query'); | |
| 334 | if ($this->getOption('disable_query')) { | |
| 335 | if ($isManip) { | |
| 336 | return 0; | |
| 337 | } | |
| 338 | return null; | |
| 339 | } | |
| 340 | ||
| 341 | if (is_null($connection)) { | |
| 342 | $err = $this->connect(); | |
| 343 | if (PEAR::isError($err)) { | |
| 344 | return $err; | |
| 345 | } | |
| 346 | $connection = $this->connection; | |
| 347 | } | |
| 348 | if (is_null($database_name)) { | |
| 349 | $database_name = $this->database_name; | |
| 350 | } | |
| 351 | ||
| 352 | if ($database_name) { | |
| 353 | if ($database_name != $this->connected_database_name) { | |
| 354 | if (!@mssql_select_db($database_name, $connection)) { | |
| 355 | return $this->raiseError(); | |
| 356 | } | |
| 357 | $this->connected_database_name = $database_name; | |
| 358 | } | |
| 359 | } | |
| 360 | ||
| 361 | $result = @mssql_query($query, $connection); | |
| 362 | if (!$result) { | |
| 363 | return $this->raiseError(); | |
| 364 | } | |
| 365 | ||
| 366 | if ($isManip) { | |
| 367 | return @mssql_rows_affected($connection); | |
| 368 | } | |
| 369 | return $result; | |
| 370 | } | |
| 371 | ||
| 372 | // }}} | |
| 373 | // {{{ _modifyQuery() | |
| 374 | ||
| 375 | /** | |
| 376 | * Changes a query string for various DBMS specific reasons | |
| 377 | * | |
| 378 | * @param string $query query to modify | |
| 379 | * @return the new (modified) query | |
| 380 | * @access protected | |
| 381 | */ | |
| 382 | function _modifyQuery($query, $isManip, $limit, $offset) | |
| 383 | { | |
| 384 | if ($limit > 0) { | |
| 385 | $fetch = $offset + $limit; | |
| 386 | if (!$isManip) { | |
| 387 | return preg_replace('/^([\s(])*SELECT(?!\s*TOP\s*\()/i', | |
| 388 | "\\1SELECT TOP $fetch", $query); | |
| 389 | } | |
| 390 | } | |
| 391 | return $query; | |
| 392 | } | |
| 393 | // }}} | |
| 394 | // {{{ _checkSequence | |
| 395 | /** | |
| 396 | * Checks if there's a sequence that exists. | |
| 397 | * | |
| 398 | * @param string $seq_name The sequence name to verify. | |
| 399 | * @return bool $tableExists The value if the table exists or not | |
| 400 | * @access private | |
| 401 | */ | |
| 402 | function _checkSequence($seq_name) | |
| 403 | { | |
| 404 | $query = "SELECT * FROM $seq_name"; | |
| 405 | $tableExists = $this->_doQuery($query, true); | |
| 406 | if (PEAR::isError($tableExists)) { | |
| 407 | if ($tableExists->getCode() == MDB2_ERROR_NOSUCHTABLE) { | |
| 408 | return 0; | |
| 409 | } | |
| 410 | } else { | |
| 411 | return 1; | |
| 412 | } | |
| 413 | } | |
| 414 | // }}} | |
| 415 | // {{{ nextID() | |
| 416 | ||
| 417 | /** | |
| 418 | * returns the next free id of a sequence | |
| 419 | * | |
| 420 | * @param string $seq_name name of the sequence | |
| 421 | * @param boolean $ondemand when true the seqence is | |
| 422 | * automatic created, if it | |
| 423 | * not exists | |
| 424 | * | |
| 425 | * @return mixed MDB2 Error Object or id | |
| 426 | * @access public | |
| 427 | */ | |
| 428 | function nextID($seq_name, $ondemand = true) | |
| 429 | { | |
| 430 | $sequence_name = $this->getSequenceName($seq_name); | |
| 431 | if (!$this->_checkSequence($sequence_name)) { | |
| 432 | $query = "INSERT INTO $sequence_name (".$this->options['seqcol_name'].") VALUES (0)"; | |
| 433 | } else { | |
| 434 | $query = "SET IDENTITY_INSERT $sequence_name ON ". | |
| 435 | "INSERT INTO $sequence_name (".$this->options['seqcol_name'].") VALUES (0)"; | |
| 436 | } | |
| 437 | $this->expectError(MDB2_ERROR_NOSUCHTABLE); | |
| 438 | $result = $this->_doQuery($query, true); | |
| 439 | $this->popExpect(); | |
| 440 | if (PEAR::isError($result)) { | |
| 441 | if ($ondemand && !$this->_checkSequence($sequence_name)) { | |
| 442 | $this->loadModule('Manager'); | |
| 443 | // Since we are creating the sequence on demand | |
| 444 | // we know the first id = 1 so initialize the | |
| 445 | // sequence at 2 | |
| 446 | $result = $this->manager->createSequence($seq_name, 2); | |
| 447 | if (PEAR::isError($result)) { | |
| 448 | return $this->raiseError(MDB2_ERROR, null, null, | |
| 449 | 'nextID: on demand sequence '.$seq_name.' could not be created'); | |
| 450 | } else { | |
| 451 | // First ID of a newly created sequence is 1 | |
| 452 | return 1; | |
| 453 | } | |
| 454 | } | |
| 455 | return $result; | |
| 456 | } | |
| 457 | ||
| 458 | // TODO: Make sure that this works. | |
| 459 | $value = $this->queryRow("SELECT @@IDENTITY", 'integer'); | |
| 460 | if (is_numeric($value)) { | |
| 461 | $query = "DELETE FROM $sequence_name WHERE ". | |
| 462 | $this->options['seqcol_name']." < $value"; | |
| 463 | $result = $this->_doQuery($query, true); | |
| 464 | ||
| 465 | if (PEAR::isError($result)) { | |
| 466 | $this->warnings[] = 'nextID: could not delete previous sequence table values'; | |
| 467 | } | |
| 468 | } | |
| 469 | return $value; | |
| 470 | } | |
| 471 | // }}} | |
| 472 | // {{{ lastInsertID() | |
| 473 | /** | |
| 474 | * returns the autoincrement ID if supported or $id | |
| 475 | * | |
| 476 | * @param mixed $id value as returned by getBeforeId() | |
| 477 | * @param string $table name of the table into which a new row was inserted | |
| 478 | * @return mixed MDB2 Error Object or id | |
| 479 | * @access public | |
| 480 | */ | |
| 481 | function lastInsertID($table = null, $field = null) | |
| 482 | { | |
| 483 | return $this->queryOne("SELECT @@IDENTITY FROM $table", 'integer'); | |
| 484 | } | |
| 485 | // }}} | |
| 486 | } | |
| 487 | // }}} | |
| 488 | // {{{ Class MDB2_Result_mssql | |
| 489 | ||
| 490 | class MDB2_Result_mssql extends MDB2_Result_Common | |
| 491 | { | |
| 492 | // {{{ _skipLimitOffset() | |
| 493 | ||
| 494 | /** | |
| 495 | * Skip the first row of a result set. | |
| 496 | * | |
| 497 | * @param resource $result | |
| 498 | * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure | |
| 499 | * @access protected | |
| 500 | */ | |
| 501 | function _skipLimitOffset() | |
| 502 | { | |
| 503 | if ($this->limit) { | |
| 504 | if ($this->rownum >= $this->limit) { | |
| 505 | return false; | |
| 506 | } | |
| 507 | } | |
| 508 | if ($this->offset) { | |
| 509 | while ($this->offset_count < $this->offset) { | |
| 510 | ++$this->offset_count; | |
| 511 | if (!is_array(@mysql_fetch_row($this->result))) { | |
| 512 | $this->offset_count = $this->limit; | |
| 513 | return false; | |
| 514 | } | |
| 515 | } | |
| 516 | } | |
| 517 | return MDB2_OK; | |
| 518 | } | |
| 519 | ||
| 520 | // }}} | |
| 521 | // {{{ fetchRow() | |
| 522 | ||
| 523 | /** | |
| 524 | * Fetch a row and insert the data into an existing array. | |
| 525 | * | |
| 526 | * @param int $fetchmode how the array data should be indexed | |
| 527 | * @param int $rownum number of the row where the data can be found | |
| 528 | * @return int data array on success, a MDB2 error on failure | |
| 529 | * @access public | |
| 530 | */ | |
| 531 | function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) | |
| 532 | { | |
| 533 | if (!$this->_skipLimitOffset()) { | |
| 534 | $null = null; | |
| 535 | return $null; | |
| 536 | } | |
| 537 | if (!is_null($rownum)) { | |
| 538 | $seek = $this->seek($rownum); | |
| 539 | if (PEAR::isError($seek)) { | |
| 540 | return $seek; | |
| 541 | } | |
| 542 | } | |
| 543 | if ($fetchmode == MDB2_FETCHMODE_DEFAULT) { | |
| 544 | $fetchmode = $this->db->fetchmode; | |
| 545 | } | |
| 546 | if ($fetchmode & MDB2_FETCHMODE_ASSOC) { | |
| 547 | $row = @mssql_fetch_assoc($this->result); | |
| 548 | if (is_array($row) | |
| 549 | && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE | |
| 550 | ) { | |
| 551 | $row = array_change_key_case($row, $this->db->options['field_case']); | |
| 552 | } | |
| 553 | } else { | |
| 554 | $row = @mssql_fetch_row($this->result); | |
| 555 | } | |
| 556 | if (!$row) { | |
| 557 | if (is_null($this->result)) { | |
| 558 | $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 559 | 'fetchRow: resultset has already been freed'); | |
| 560 | return $err; | |
| 561 | } | |
| 562 | $null = null; | |
| 563 | return $null; | |
| 564 | } | |
| 565 | if ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL) { | |
| 566 | $this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_EMPTY_TO_NULL); | |
| 567 | } | |
| 568 | if (!empty($this->values)) { | |
| 569 | $this->_assignBindColumns($row); | |
| 570 | } | |
| 571 | if (!empty($this->types)) { | |
| 572 | $row = $this->db->datatype->convertResultRow($this->types, $row); | |
| 573 | } | |
| 574 | if ($fetchmode === MDB2_FETCHMODE_OBJECT) { | |
| 575 | $object_class = $this->db->options['fetch_class']; | |
| 576 | if ($object_class == 'stdClass') { | |
| 577 | $row = (object) $row; | |
| 578 | } else { | |
| 579 | $row = &new $object_class($row); | |
| 580 | } | |
| 581 | } | |
| 582 | ++$this->rownum; | |
| 583 | return $row; | |
| 584 | } | |
| 585 | ||
| 586 | // }}} | |
| 587 | // {{{ _getColumnNames() | |
| 588 | ||
| 589 | /** | |
| 590 | * Retrieve the names of columns returned by the DBMS in a query result. | |
| 591 | * | |
| 592 | * @param resource $result result identifier | |
| 593 | * @return mixed an associative array variable | |
| 594 | * that will hold the names of columns. The | |
| 595 | * indexes of the array are the column names | |
| 596 | * mapped to lower case and the values are the | |
| 597 | * respective numbers of the columns starting | |
| 598 | * from 0. Some DBMS may not return any | |
| 599 | * columns when the result set does not | |
| 600 | * contain any rows. | |
| 601 | * | |
| 602 | * a MDB2 error on failure | |
| 603 | * @access private | |
| 604 | */ | |
| 605 | function _getColumnNames() | |
| 606 | { | |
| 607 | $columns = array(); | |
| 608 | $numcols = $this->numCols(); | |
| 609 | if (PEAR::isError($numcols)) { | |
| 610 | return $numcols; | |
| 611 | } | |
| 612 | for ($column = 0; $column < $numcols; $column++) { | |
| 613 | $column_name = @mssql_field_name($this->result, $column); | |
| 614 | $columns[$column_name] = $column; | |
| 615 | } | |
| 616 | if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { | |
| 617 | $columns = array_change_key_case($columns, $this->db->options['field_case']); | |
| 618 | } | |
| 619 | return $columns; | |
| 620 | } | |
| 621 | ||
| 622 | // }}} | |
| 623 | // {{{ numCols() | |
| 624 | ||
| 625 | /** | |
| 626 | * Count the number of columns returned by the DBMS in a query result. | |
| 627 | * | |
| 628 | * @return mixed integer value with the number of columns, a MDB2 error | |
| 629 | * on failure | |
| 630 | * @access public | |
| 631 | */ | |
| 632 | function numCols() | |
| 633 | { | |
| 634 | $cols = @mssql_num_fields($this->result); | |
| 635 | if (is_null($cols)) { | |
| 636 | if (is_null($this->result)) { | |
| 637 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 638 | 'numCols: resultset has already been freed'); | |
| 639 | } | |
| 640 | return $this->db->raiseError(); | |
| 641 | } | |
| 642 | return $cols; | |
| 643 | } | |
| 644 | ||
| 645 | // }}} | |
| 646 | // {{{ nextResult() | |
| 647 | ||
| 648 | /** | |
| 649 | * Move the internal result pointer to the next available result | |
| 650 | * Currently not supported | |
| 651 | * | |
| 652 | * @return true if a result is available otherwise return false | |
| 653 | * @access public | |
| 654 | */ | |
| 655 | function nextResult() | |
| 656 | { | |
| 657 | if (is_null($this->result)) { | |
| 658 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 659 | 'nextResult: resultset has already been freed'); | |
| 660 | } | |
| 661 | return @mssql_next_result($this->result); | |
| 662 | } | |
| 663 | ||
| 664 | // }}} | |
| 665 | // {{{ free() | |
| 666 | ||
| 667 | /** | |
| 668 | * Free the internal resources associated with $result. | |
| 669 | * | |
| 670 | * @return boolean true on success, false if $result is invalid | |
| 671 | * @access public | |
| 672 | */ | |
| 673 | function free() | |
| 674 | { | |
| 675 | $free = @mssql_free_result($this->result); | |
| 676 | if (!$free) { | |
| 677 | if (is_null($this->result)) { | |
| 678 | return MDB2_OK; | |
| 679 | } | |
| 680 | return $this->db->raiseError(); | |
| 681 | } | |
| 682 | $this->result = null; | |
| 683 | return MDB2_OK; | |
| 684 | } | |
| 685 | } | |
| 686 | ||
| 687 | class MDB2_BufferedResult_mssql extends MDB2_Result_mssql | |
| 688 | { | |
| 689 | // }}} | |
| 690 | // {{{ seek() | |
| 691 | ||
| 692 | /** | |
| 693 | * seek to a specific row in a result set | |
| 694 | * | |
| 695 | * @param int $rownum number of the row where the data can be found | |
| 696 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 697 | * @access public | |
| 698 | */ | |
| 699 | function seek($rownum = 0) | |
| 700 | { | |
| 701 | if ($this->rownum != ($rownum - 1) && !@mssql_data_seek($this->result, $rownum)) { | |
| 702 | if (is_null($this->result)) { | |
| 703 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 704 | 'seek: resultset has already been freed'); | |
| 705 | } | |
| 706 | return $this->db->raiseError(MDB2_ERROR_INVALID, null, null, | |
| 707 | 'seek: tried to seek to an invalid row number ('.$rownum.')'); | |
| 708 | } | |
| 709 | $this->rownum = $rownum - 1; | |
| 710 | return MDB2_OK; | |
| 711 | } | |
| 712 | ||
| 713 | // {{{ valid() | |
| 714 | ||
| 715 | /** | |
| 716 | * check if the end of the result set has been reached | |
| 717 | * | |
| 718 | * @return mixed true or false on sucess, a MDB2 error on failure | |
| 719 | * @access public | |
| 720 | */ | |
| 721 | function valid() | |
| 722 | { | |
| 723 | $numrows = $this->numRows(); | |
| 724 | if (PEAR::isError($numrows)) { | |
| 725 | return $numrows; | |
| 726 | } | |
| 727 | return $this->rownum < ($numrows - 1); | |
| 728 | } | |
| 729 | ||
| 730 | // }}} | |
| 731 | // {{{ numRows() | |
| 732 | ||
| 733 | /** | |
| 734 | * returns the number of rows in a result object | |
| 735 | * | |
| 736 | * @return mixed MDB2 Error Object or the number of rows | |
| 737 | * @access public | |
| 738 | */ | |
| 739 | function numRows() | |
| 740 | { | |
| 741 | $rows = @mssql_num_rows($this->result); | |
| 742 | if (is_null($rows)) { | |
| 743 | if (is_null($this->result)) { | |
| 744 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, | |
| 745 | 'numRows: resultset has already been freed'); | |
| 746 | } | |
| 747 | return $this->raiseError(); | |
| 748 | } | |
| 749 | if ($this->limit) { | |
| 750 | $rows -= $this->limit; | |
| 751 | if ($rows < 0) { | |
| 752 | $rows = 0; | |
| 753 | } | |
| 754 | } | |
| 755 | return $rows; | |
| 756 | } | |
| 757 | } | |
| 758 | // }}} | |
| 759 | // {{{ MDB2_Statement_mssql | |
| 760 | class MDB2_Statement_mssql extends MDB2_Statement_Common | |
| 761 | { | |
| 762 | ||
| 763 | } | |
| 764 | // }}} | |
| 765 | ||
| 766 | ?> | |
