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Diffstat (limited to 'program/lib/MDB2/Driver/mssql.php')
| -rw-r--r-- | program/lib/MDB2/Driver/mssql.php | 1172 |
1 files changed, 0 insertions, 1172 deletions
diff --git a/program/lib/MDB2/Driver/mssql.php b/program/lib/MDB2/Driver/mssql.php deleted file mode 100644 index 88d326b7a..000000000 --- a/program/lib/MDB2/Driver/mssql.php +++ /dev/null @@ -1,1172 +0,0 @@ -<?php -// vim: set et ts=4 sw=4 fdm=marker: -// +----------------------------------------------------------------------+ -// | PHP versions 4 and 5 | -// +----------------------------------------------------------------------+ -// | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, | -// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann | -// | All rights reserved. | -// +----------------------------------------------------------------------+ -// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | -// | API as well as database abstraction for PHP applications. | -// | This LICENSE is in the BSD license style. | -// | | -// | Redistribution and use in source and binary forms, with or without | -// | modification, are permitted provided that the following conditions | -// | are met: | -// | | -// | Redistributions of source code must retain the above copyright | -// | notice, this list of conditions and the following disclaimer. | -// | | -// | Redistributions in binary form must reproduce the above copyright | -// | notice, this list of conditions and the following disclaimer in the | -// | documentation and/or other materials provided with the distribution. | -// | | -// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | -// | Lukas Smith nor the names of his contributors may be used to endorse | -// | or promote products derived from this software without specific prior| -// | written permission. | -// | | -// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | -// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | -// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | -// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | -// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | -// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | -// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| -// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | -// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | -// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| -// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | -// | POSSIBILITY OF SUCH DAMAGE. | -// +----------------------------------------------------------------------+ -// | Author: Frank M. Kromann <frank@kromann.info> | -// +----------------------------------------------------------------------+ -// -// $Id: mssql.php 295587 2010-02-28 17:16:38Z quipo $ -// -// {{{ Class MDB2_Driver_mssql -/** - * MDB2 MSSQL Server driver - * - * @package MDB2 - * @category Database - * @author Frank M. Kromann <frank@kromann.info> - */ -class MDB2_Driver_mssql extends MDB2_Driver_Common -{ - // {{{ properties - - var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false); - - var $identifier_quoting = array('start' => '[', 'end' => ']', 'escape' => ']'); - - // }}} - // {{{ constructor - - /** - * Constructor - */ - function __construct() - { - parent::__construct(); - - $this->phptype = 'mssql'; - $this->dbsyntax = 'mssql'; - - $this->supported['sequences'] = 'emulated'; - $this->supported['indexes'] = true; - $this->supported['affected_rows'] = true; - $this->supported['transactions'] = true; - $this->supported['savepoints'] = false; - $this->supported['summary_functions'] = true; - $this->supported['order_by_text'] = true; - $this->supported['current_id'] = 'emulated'; - $this->supported['limit_queries'] = 'emulated'; - $this->supported['LOBs'] = true; - $this->supported['replace'] = 'emulated'; - $this->supported['sub_selects'] = true; - $this->supported['triggers'] = true; - $this->supported['auto_increment'] = true; - $this->supported['primary_key'] = true; - $this->supported['result_introspection'] = true; - $this->supported['prepared_statements'] = 'emulated'; - $this->supported['pattern_escaping'] = true; - $this->supported['new_link'] = true; - - $this->options['DBA_username'] = false; - $this->options['DBA_password'] = false; - $this->options['database_device'] = false; - $this->options['database_size'] = false; - $this->options['max_identifiers_length'] = 128; // MS Access: 64 - } - - // }}} - // {{{ errorInfo() - - /** - * This method is used to collect information about an error - * - * @param integer $error - * @return array - * @access public - */ - function errorInfo($error = null, $connection = null) - { - if (null === $connection) { - $connection = $this->connection; - } - - $native_code = null; - if ($connection) { - $result = @mssql_query('select @@ERROR as ErrorCode', $connection); - if ($result) { - $native_code = @mssql_result($result, 0, 0); - @mssql_free_result($result); - } - } - $native_msg = @mssql_get_last_message(); - if (null === $error) { - static $ecode_map; - if (empty($ecode_map)) { - $ecode_map = array( - 102 => MDB2_ERROR_SYNTAX, - 110 => MDB2_ERROR_VALUE_COUNT_ON_ROW, - 155 => MDB2_ERROR_NOSUCHFIELD, - 156 => MDB2_ERROR_SYNTAX, - 170 => MDB2_ERROR_SYNTAX, - 207 => MDB2_ERROR_NOSUCHFIELD, - 208 => MDB2_ERROR_NOSUCHTABLE, - 245 => MDB2_ERROR_INVALID_NUMBER, - 319 => MDB2_ERROR_SYNTAX, - 321 => MDB2_ERROR_NOSUCHFIELD, - 325 => MDB2_ERROR_SYNTAX, - 336 => MDB2_ERROR_SYNTAX, - 515 => MDB2_ERROR_CONSTRAINT_NOT_NULL, - 547 => MDB2_ERROR_CONSTRAINT, - 911 => MDB2_ERROR_NOT_FOUND, - 1018 => MDB2_ERROR_SYNTAX, - 1035 => MDB2_ERROR_SYNTAX, - 1801 => MDB2_ERROR_ALREADY_EXISTS, - 1913 => MDB2_ERROR_ALREADY_EXISTS, - 2209 => MDB2_ERROR_SYNTAX, - 2223 => MDB2_ERROR_SYNTAX, - 2248 => MDB2_ERROR_SYNTAX, - 2256 => MDB2_ERROR_SYNTAX, - 2257 => MDB2_ERROR_SYNTAX, - 2627 => MDB2_ERROR_CONSTRAINT, - 2714 => MDB2_ERROR_ALREADY_EXISTS, - 3607 => MDB2_ERROR_DIVZERO, - 3701 => MDB2_ERROR_NOSUCHTABLE, - 7630 => MDB2_ERROR_SYNTAX, - 8134 => MDB2_ERROR_DIVZERO, - 9303 => MDB2_ERROR_SYNTAX, - 9317 => MDB2_ERROR_SYNTAX, - 9318 => MDB2_ERROR_SYNTAX, - 9331 => MDB2_ERROR_SYNTAX, - 9332 => MDB2_ERROR_SYNTAX, - 15253 => MDB2_ERROR_SYNTAX, - ); - } - if (isset($ecode_map[$native_code])) { - if ($native_code == 3701 - && preg_match('/Cannot drop the index/i', $native_msg) - ) { - $error = MDB2_ERROR_NOT_FOUND; - } else { - $error = $ecode_map[$native_code]; - } - } - } - return array($error, $native_code, $native_msg); - } - - // }}} - // {{{ function escapePattern($text) - - /** - * Quotes pattern (% and _) characters in a string) - * - * @param string the input string to quote - * - * @return string quoted string - * - * @access public - */ - function escapePattern($text) - { - $text = str_replace("[", "[ [ ]", $text); - foreach ($this->wildcards as $wildcard) { - $text = str_replace($wildcard, '[' . $wildcard . ']', $text); - } - return $text; - } - - // }}} - // {{{ escape() - - /** - * Quotes a string so it can be safely used in a query. It will quote - * the text so it can safely be used within a query. - * - * @param string $text the input string to quote - * @param bool $escape_wildcards flag - * - * @return string quoted string - * @access public - */ - function escape($text, $escape_wildcards = false) - { - $text = parent::escape($text, $escape_wildcards); - // http://pear.php.net/bugs/bug.php?id=16118 - // http://support.microsoft.com/kb/164291 - return preg_replace("/\\\\(\r\n|\r|\n)/", '\\\\$1', $text); - } - - // }}} - // {{{ beginTransaction() - - /** - * Start a transaction or set a savepoint. - * - * @param string $savepoint name of a savepoint to set - * - * @return mixed MDB2_OK on success, a MDB2 error on failure - * @access public - */ - function beginTransaction($savepoint = null) - { - $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); - if (null !== $savepoint) { - if (!$this->in_transaction) { - return $this->raiseError(MDB2_ERROR_INVALID, null, null, - 'savepoint cannot be released when changes are auto committed', __FUNCTION__); - } - $query = 'SAVE TRANSACTION '.$savepoint; - return $this->_doQuery($query, true); - } - if ($this->in_transaction) { - return MDB2_OK; //nothing to do - } - if (!$this->destructor_registered && $this->opened_persistent) { - $this->destructor_registered = true; - register_shutdown_function('MDB2_closeOpenTransactions'); - } - $result =& $this->_doQuery('BEGIN TRANSACTION', true); - if (PEAR::isError($result)) { - return $result; - } - $this->in_transaction = true; - return MDB2_OK; - } - - // }}} - // {{{ commit() - - /** - * Commit the database changes done during a transaction that is in - * progress or release a savepoint. This function may only be called when - * auto-committing is disabled, otherwise it will fail. Therefore, a new - * transaction is implicitly started after committing the pending changes. - * - * @param string $savepoint name of a savepoint to release - * - * @return mixed MDB2_OK on success, a MDB2 error on failure - * @access public - */ - function commit($savepoint = null) - { - $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); - if (!$this->in_transaction) { - return $this->raiseError(MDB2_ERROR_INVALID, null, null, - 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__); - } - if (null !== $savepoint) { - return MDB2_OK; - } - - $result =& $this->_doQuery('COMMIT TRANSACTION', true); - if (PEAR::isError($result)) { - return $result; - } - $this->in_transaction = false; - return MDB2_OK; - } - - // }}} - // {{{ rollback() - - /** - * Cancel any database changes done during a transaction or since a specific - * savepoint that is in progress. This function may only be called when - * auto-committing is disabled, otherwise it will fail. Therefore, a new - * transaction is implicitly started after canceling the pending changes. - * - * @param string $savepoint name of a savepoint to rollback to - * - * @return mixed MDB2_OK on success, a MDB2 error on failure - * @access public - */ - function rollback($savepoint = null) - { - $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); - if (!$this->in_transaction) { - return $this->raiseError(MDB2_ERROR_INVALID, null, null, - 'rollback cannot be done changes are auto committed', __FUNCTION__); - } - if (null !== $savepoint) { - $query = 'ROLLBACK TRANSACTION '.$savepoint; - return $this->_doQuery($query, true); - } - - $result =& $this->_doQuery('ROLLBACK TRANSACTION', true); - if (PEAR::isError($result)) { - return $result; - } - $this->in_transaction = false; - return MDB2_OK; - } - - // }}} - // {{{ _doConnect() - - /** - * do the grunt work of the connect - * - * @param string $username - * @param string $password - * @param boolean $persistent - * - * @return connection on success or MDB2 Error Object on failure - * @access protected - */ - function _doConnect($username, $password, $persistent = false) - { - if ( !PEAR::loadExtension($this->phptype) - && !PEAR::loadExtension('sybase_ct') - && !PEAR::loadExtension('odbtp') - && !function_exists('mssql_connect') - ) { - return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, - 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__); - } - - $params = array( - $this->dsn['hostspec'] ? $this->dsn['hostspec'] : 'localhost', - $username ? $username : null, - $password ? $password : null, - ); - if ($this->dsn['port']) { - $params[0].= ((substr(PHP_OS, 0, 3) == 'WIN') ? ',' : ':').$this->dsn['port']; - } - if (!$persistent) { - if ($this->_isNewLinkSet()) { - $params[] = true; - } else { - $params[] = false; - } - } - - $connect_function = $persistent ? 'mssql_pconnect' : 'mssql_connect'; - - $connection = @call_user_func_array($connect_function, $params); - if ($connection <= 0) { - return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, - 'unable to establish a connection', __FUNCTION__, __FUNCTION__); - } - - @mssql_query('SET ANSI_NULL_DFLT_ON ON', $connection); - - /* - if (!empty($this->dsn['charset'])) { - $result = $this->setCharset($this->dsn['charset'], $connection); - if (PEAR::isError($result)) { - return $result; - } - } - */ - - if ((bool)ini_get('mssql.datetimeconvert')) { - // his isn't the most elegant way of doing it but it prevents from - // breaking anything thus preserves BC. Bug #11849 - if (isset($this->options['datetimeconvert']) && (bool)$this->options['datetimeconvert'] !== false) { - @ini_set('mssql.datetimeconvert', '1'); - } else { - @ini_set('mssql.datetimeconvert', '0'); - } - } - - if (empty($this->dsn['disable_iso_date'])) { - @mssql_query('SET DATEFORMAT ymd', $connection); - } - - return $connection; - } - - // }}} - // {{{ connect() - - /** - * Connect to the database - * - * @return true on success, MDB2 Error Object on failure - */ - function connect() - { - if (is_resource($this->connection)) { - //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 - if (MDB2::areEquals($this->connected_dsn, $this->dsn) - && $this->opened_persistent == $this->options['persistent'] - ) { - return MDB2_OK; - } - $this->disconnect(false); - } - - $connection = $this->_doConnect( - $this->dsn['username'], - $this->dsn['password'], - $this->options['persistent'] - ); - if (PEAR::isError($connection)) { - return $connection; - } - - $this->connection = $connection; - $this->connected_dsn = $this->dsn; - $this->connected_database_name = ''; - $this->opened_persistent = $this->options['persistent']; - $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype; - - if ($this->database_name) { - if ($this->database_name != $this->connected_database_name) { - if (!@mssql_select_db($this->database_name, $connection)) { - $err = $this->raiseError(null, null, null, - 'Could not select the database: '.$this->database_name, __FUNCTION__); - return $err; - } - $this->connected_database_name = $this->database_name; - } - } - - return MDB2_OK; - } - - // }}} - // {{{ databaseExists() - - /** - * check if given database name is exists? - * - * @param string $name name of the database that should be checked - * - * @return mixed true/false on success, a MDB2 error on failure - * @access public - */ - function databaseExists($name) - { - $connection = $this->_doConnect($this->dsn['username'], - $this->dsn['password'], - $this->options['persistent']); - if (PEAR::isError($connection)) { - return $connection; - } - - $result = @mssql_select_db($name, $connection); - $errorInfo = $this->errorInfo(null, $connection); - @mssql_close($connection); - if (!$result) { - if ($errorInfo[0] != MDB2_ERROR_NOT_FOUND) { - exit; - $result = $this->raiseError($errorInfo[0], null, null, $errorInfo[2], __FUNCTION__); - return $result; - } - $result = false; - } - - return $result; - } - - // }}} - // {{{ disconnect() - - /** - * Log out and disconnect from the database. - * - * @param boolean $force if the disconnect should be forced even if the - * connection is opened persistently - * @return mixed true on success, false if not connected and error - * object on error - * @access public - */ - function disconnect($force = true) - { - if (is_resource($this->connection)) { - if ($this->in_transaction) { - $dsn = $this->dsn; - $database_name = $this->database_name; - $persistent = $this->options['persistent']; - $this->dsn = $this->connected_dsn; - $this->database_name = $this->connected_database_name; - $this->options['persistent'] = $this->opened_persistent; - $this->rollback(); - $this->dsn = $dsn; - $this->database_name = $database_name; - $this->options['persistent'] = $persistent; - } - - if (!$this->opened_persistent || $force) { - $ok = @mssql_close($this->connection); - if (!$ok) { - return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED, - null, null, null, __FUNCTION__); - } - } - } else { - return false; - } - return parent::disconnect($force); - } - - // }}} - // {{{ standaloneQuery() - - /** - * execute a query as DBA - * - * @param string $query the SQL query - * @param mixed $types array that contains the types of the columns in - * the result set - * @param boolean $is_manip if the query is a manipulation query - * @return mixed MDB2_OK on success, a MDB2 error on failure - * @access public - */ - function standaloneQuery($query, $types = null, $is_manip = false) - { - $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username']; - $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password']; - $connection = $this->_doConnect($user, $pass, $this->options['persistent']); - if (PEAR::isError($connection)) { - return $connection; - } - - $offset = $this->offset; - $limit = $this->limit; - $this->offset = $this->limit = 0; - $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); - - $result = $this->_doQuery($query, $is_manip, $connection, $this->database_name); - if (!PEAR::isError($result)) { - $result = $this->_affectedRows($connection, $result); - } - - @mssql_close($connection); - return $result; - } - - // }}} - // {{{ _doQuery() - - /** - * Execute a query - * @param string $query query - * @param boolean $is_manip if the query is a manipulation query - * @param resource $connection - * @param string $database_name - * @return result or error object - * @access protected - */ - function _doQuery($query, $is_manip = false, $connection = null, $database_name = null) - { - $this->last_query = $query; - $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre')); - if ($result) { - if (PEAR::isError($result)) { - return $result; - } - $query = $result; - } - if ($this->options['disable_query']) { - $result = $is_manip ? 0 : null; - return $result; - } - - if (null === $connection) { - $connection = $this->getConnection(); - if (PEAR::isError($connection)) { - return $connection; - } - } - if (null === $database_name) { - $database_name = $this->database_name; - } - - if ($database_name) { - if ($database_name != $this->connected_database_name) { - if (!@mssql_select_db($database_name, $connection)) { - $err = $this->raiseError(null, null, null, - 'Could not select the database: '.$database_name, __FUNCTION__); - return $err; - } - $this->connected_database_name = $database_name; - } - } - - $result = @mssql_query($query, $connection); - if (!$result) { - $err = $this->raiseError(null, null, null, - 'Could not execute statement', __FUNCTION__); - return $err; - } - - $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result)); - return $result; - } - - // }}} - // {{{ _affectedRows() - - /** - * Returns the number of rows affected - * - * @param resource $result - * @param resource $connection - * @return mixed MDB2 Error Object or the number of rows affected - * @access private - */ - function _affectedRows($connection, $result = null) - { - if (null === $connection) { - $connection = $this->getConnection(); - if (PEAR::isError($connection)) { - return $connection; - } - } - return @mssql_rows_affected($connection); - } - - // }}} - // {{{ _modifyQuery() - - /** - * Changes a query string for various DBMS specific reasons - * - * @param string $query query to modify - * @param boolean $is_manip if it is a DML query - * @param integer $limit limit the number of rows - * @param integer $offset start reading from given offset - * @return string modified query - * @access protected - */ - function _modifyQuery($query, $is_manip, $limit, $offset) - { - if ($limit > 0) { - $fetch = $offset + $limit; - if (!$is_manip) { - return preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i', - "\\1SELECT\\2 TOP $fetch", $query); - } - } - return $query; - } - - // }}} - // {{{ getServerVersion() - - /** - * return version information about the server - * - * @param bool $native determines if the raw version string should be returned - * @return mixed array/string with version information or MDB2 error object - * @access public - */ - function getServerVersion($native = false) - { - if ($this->connected_server_info) { - $server_info = $this->connected_server_info; - } else { - $query = 'SELECT @@VERSION'; - $server_info = $this->queryOne($query, 'text'); - if (PEAR::isError($server_info)) { - return $server_info; - } - } - // cache server_info - $this->connected_server_info = $server_info; - if (!$native && !PEAR::isError($server_info)) { - if (preg_match('/(\d+)\.(\d+)\.(\d+)/', $server_info, $tmp)) { - $server_info = array( - 'major' => $tmp[1], - 'minor' => $tmp[2], - 'patch' => $tmp[3], - 'extra' => null, - 'native' => $server_info, - ); - } else { - $server_info = array( - 'major' => null, - 'minor' => null, - 'patch' => null, - 'extra' => null, - 'native' => $server_info, - ); - } - } - return $server_info; - } - - // }}} - // {{{ _checkSequence - - /** - * Checks if there's a sequence that exists. - * - * @param string $seq_name The sequence name to verify. - * @return bool $tableExists The value if the table exists or not - * @access private - */ - function _checkSequence($seq_name) - { - $query = "SELECT * FROM $seq_name"; - $tableExists = $this->_doQuery($query, true); - if (PEAR::isError($tableExists)) { - if ($tableExists->getCode() == MDB2_ERROR_NOSUCHTABLE) { - return false; - } - //return $tableExists; - return false; - } - return mssql_result($tableExists, 0, 0); - } - - // }}} - // {{{ nextID() - - /** - * Returns the next free id of a sequence - * - * @param string $seq_name name of the sequence - * @param boolean $ondemand when true the sequence is - * automatic created, if it - * not exists - * - * @return mixed MDB2 Error Object or id - * @access public - */ - function nextID($seq_name, $ondemand = true) - { - $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); - $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true); - $this->pushErrorHandling(PEAR_ERROR_RETURN); - $this->expectError(MDB2_ERROR_NOSUCHTABLE); - - $seq_val = $this->_checkSequence($sequence_name); - - if ($seq_val) { - $query = "SET IDENTITY_INSERT $sequence_name OFF ". - "INSERT INTO $sequence_name DEFAULT VALUES"; - } else { - $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (0)"; - } - $result = $this->_doQuery($query, true); - $this->popExpect(); - $this->popErrorHandling(); - if (PEAR::isError($result)) { - if ($ondemand && !$this->_checkSequence($sequence_name)) { - $this->loadModule('Manager', null, true); - $result = $this->manager->createSequence($seq_name); - if (PEAR::isError($result)) { - return $this->raiseError($result, null, null, - 'on demand sequence '.$seq_name.' could not be created', __FUNCTION__); - } else { - /** - * Little off-by-one problem with the sequence emulation - * here being fixed, that instead of re-calling nextID - * and forcing an increment by one, we simply check if it - * exists, then we get the last inserted id if it does. - * - * In theory, $seq_name should be created otherwise there would - * have been an error thrown somewhere up there.. - * - * @todo confirm - */ - if ($this->_checkSequence($seq_name)) { - return $this->lastInsertID($seq_name); - } - - return $this->nextID($seq_name, false); - } - } - return $result; - } - $value = $this->lastInsertID($sequence_name); - if (is_numeric($value)) { - $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value"; - $result = $this->_doQuery($query, true); - if (PEAR::isError($result)) { - $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name; - } - } - return $value; - } - - // }}} - // {{{ lastInsertID() - - /** - * Returns the autoincrement ID if supported or $id or fetches the current - * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field) - * - * @param string $table name of the table into which a new row was inserted - * @param string $field name of the field into which a new row was inserted - * - * @return mixed MDB2 Error Object or id - * @access public - */ - function lastInsertID($table = null, $field = null) - { - $server_info = $this->getServerVersion(); - if (is_array($server_info) && (null !== $server_info['major']) - && $server_info['major'] >= 8 - ) { - $query = "SELECT IDENT_CURRENT('$table')"; - } else { - $query = "SELECT @@IDENTITY"; - if (null !== $table) { - $query .= ' FROM '.$this->quoteIdentifier($table, true); - } - } - - return $this->queryOne($query, 'integer'); - } - - // }}} -} - -// }}} -// {{{ Class MDB2_Result_mssql - -/** - * MDB2 MSSQL Server result driver - * - * @package MDB2 - * @category Database - * @author Frank M. Kromann <frank@kromann.info> - */ -class MDB2_Result_mssql extends MDB2_Result_Common -{ - // {{{ _skipLimitOffset() - - /** - * Skip the first row of a result set. - * - * @param resource $result - * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure - * @access protected - */ - function _skipLimitOffset() - { - if ($this->limit) { - if ($this->rownum >= $this->limit) { - return false; - } - } - if ($this->offset) { - while ($this->offset_count < $this->offset) { - ++$this->offset_count; - if (!is_array(@mssql_fetch_row($this->result))) { - $this->offset_count = $this->limit; - return false; - } - } - } - return MDB2_OK; - } - - // }}} - // {{{ fetchRow() - - /** - * Fetch a row and insert the data into an existing array. - * - * @param int $fetchmode how the array data should be indexed - * @param int $rownum number of the row where the data can be found - * - * @return int data array on success, a MDB2 error on failure - * @access public - */ - function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) - { - if (!$this->_skipLimitOffset()) { - return null; - } - if (null !== $rownum) { - $seek = $this->seek($rownum); - if (PEAR::isError($seek)) { - return $seek; - } - } - if ($fetchmode == MDB2_FETCHMODE_DEFAULT) { - $fetchmode = $this->db->fetchmode; - } - if ($fetchmode & MDB2_FETCHMODE_ASSOC) { - $row = @mssql_fetch_assoc($this->result); - if (is_array($row) - && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE - ) { - $row = array_change_key_case($row, $this->db->options['field_case']); - } - } else { - $row = @mssql_fetch_row($this->result); - } - if (!$row) { - if (false === $this->result) { - $err = $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, - 'resultset has already been freed', __FUNCTION__); - return $err; - } - return null; - } - $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL; - $rtrim = false; - if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) { - if (empty($this->types)) { - $mode += MDB2_PORTABILITY_RTRIM; - } else { - $rtrim = true; - } - } - if ($mode) { - $this->db->_fixResultArrayValues($row, $mode); - } - if (!empty($this->types)) { - $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim); - } - if (!empty($this->values)) { - $this->_assignBindColumns($row); - } - if ($fetchmode === MDB2_FETCHMODE_OBJECT) { - $object_class = $this->db->options['fetch_class']; - if ($object_class == 'stdClass') { - $row = (object) $row; - } else { - $rowObj = new $object_class($row); - $row = $rowObj; - } - } - ++$this->rownum; - return $row; - } - - // }}} - // {{{ _getColumnNames() - - /** - * Retrieve the names of columns returned by the DBMS in a query result. - * - * @return mixed Array variable that holds the names of columns as keys - * or an MDB2 error on failure. - * Some DBMS may not return any columns when the result set - * does not contain any rows. - * @access private - */ - function _getColumnNames() - { - $columns = array(); - $numcols = $this->numCols(); - if (PEAR::isError($numcols)) { - return $numcols; - } - for ($column = 0; $column < $numcols; $column++) { - $column_name = @mssql_field_name($this->result, $column); - $columns[$column_name] = $column; - } - if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { - $columns = array_change_key_case($columns, $this->db->options['field_case']); - } - return $columns; - } - - // }}} - // {{{ numCols() - - /** - * Count the number of columns returned by the DBMS in a query result. - * - * @return mixed integer value with the number of columns, a MDB2 error - * on failure - * @access public - */ - function numCols() - { - $cols = @mssql_num_fields($this->result); - if (null === $cols) { - if (false === $this->result) { - return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, - 'resultset has already been freed', __FUNCTION__); - } - if (null === $this->result) { - return count($this->types); - } - return $this->db->raiseError(null, null, null, - 'Could not get column count', __FUNCTION__); - } - return $cols; - } - - // }}} - // {{{ nextResult() - - /** - * Move the internal result pointer to the next available result - * - * @return true on success, false if there is no more result set or an error object on failure - * @access public - */ - function nextResult() - { - if (false === $this->result) { - return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, - 'resultset has already been freed', __FUNCTION__); - } - if (null === $this->result) { - return false; - } - return @mssql_next_result($this->result); - } - - // }}} - // {{{ free() - - /** - * Free the internal resources associated with $result. - * - * @return boolean true on success, false if $result is invalid - * @access public - */ - function free() - { - if (is_resource($this->result) && $this->db->connection) { - $free = @mssql_free_result($this->result); - if (false === $free) { - return $this->db->raiseError(null, null, null, - 'Could not free result', __FUNCTION__); - } - } - $this->result = false; - return MDB2_OK; - } - - // }}} -} - -// }}} -// {{{ class MDB2_BufferedResult_mssql - -/** - * MDB2 MSSQL Server buffered result driver - * - * @package MDB2 - * @category Database - * @author Frank M. Kromann <frank@kromann.info> - */ -class MDB2_BufferedResult_mssql extends MDB2_Result_mssql -{ - // {{{ seek() - - /** - * Seek to a specific row in a result set - * - * @param int $rownum number of the row where the data can be found - * - * @return mixed MDB2_OK on success, a MDB2 error on failure - * @access public - */ - function seek($rownum = 0) - { - if ($this->rownum != ($rownum - 1) && !@mssql_data_seek($this->result, $rownum)) { - if (false === $this->result) { - return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, - 'resultset has already been freed', __FUNCTION__); - } - if (null === $this->result) { - return MDB2_OK; - } - return $this->db->raiseError(MDB2_ERROR_INVALID, null, null, - 'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__); - } - $this->rownum = $rownum - 1; - return MDB2_OK; - } - - // }}} - // {{{ valid() - - /** - * Check if the end of the result set has been reached - * - * @return mixed true or false on sucess, a MDB2 error on failure - * @access public - */ - function valid() - { - $numrows = $this->numRows(); - if (PEAR::isError($numrows)) { - return $numrows; - } - return $this->rownum < ($numrows - 1); - } - - // }}} - // {{{ numRows() - - /** - * Returns the number of rows in a result object - * - * @return mixed MDB2 Error Object or the number of rows - * @access public - */ - function numRows() - { - $rows = @mssql_num_rows($this->result); - if (null === $rows) { - if (false === $this->result) { - return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, - 'resultset has already been freed', __FUNCTION__); - } - if (null === $this->result) { - return 0; - } - return $this->db->raiseError(null, null, null, - 'Could not get row count', __FUNCTION__); - } - if ($this->limit) { - $rows -= $this->offset; - if ($rows > $this->limit + 1) { - $rows = $this->limit + 1; - } - if ($rows < 0) { - $rows = 0; - } - } - return $rows; - } -} - -// }}} -// {{{ MDB2_Statement_mssql - -/** - * MDB2 MSSQL Server statement driver - * - * @package MDB2 - * @category Database - * @author Frank M. Kromann <frank@kromann.info> - */ -class MDB2_Statement_mssql extends MDB2_Statement_Common -{ - -} - -// }}} -?>
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