125 lines
4.9 KiB
PHP
125 lines
4.9 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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Doctrine::autoload('Doctrine_Connection_Common');
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/**
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* Doctrine_Connection_Mysql
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*
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* @package Doctrine ORM
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* @url www.phpdoctrine.com
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* @license LGPL
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*/
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class Doctrine_Connection_Mysql extends Doctrine_Connection_Common {
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/**
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* @var string $driverName the name of this connection driver
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*/
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protected $driverName = 'Mysql';
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/**
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* the constructor
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*
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* @param Doctrine_Manager $manager
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* @param PDO $pdo database handle
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*/
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public function __construct(Doctrine_Manager $manager,PDO $pdo) {
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$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, true);
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$this->setAttribute(Doctrine::ATTR_QUERY_LIMIT, Doctrine::LIMIT_ROWS);
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$this->supported = array(
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'sequences' => 'emulated',
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'indexes' => true,
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'affected_rows' => true,
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'transactions' => true,
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'savepoints' => false,
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'summary_functions' => true,
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'order_by_text' => true,
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'current_id' => 'emulated',
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'limit_queries' => true,
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'LOBs' => true,
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'replace' => true,
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'sub_selects' => true,
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'auto_increment' => true,
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'primary_key' => true,
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'result_introspection' => true,
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'prepared_statements' => 'emulated',
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'identifier_quoting' => true,
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'pattern_escaping' => true
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);
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parent::__construct($manager,$pdo);
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}
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/**
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* getTransactionIsolation
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*
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* @return string returns the current session transaction isolation level
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*/
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public function getTransactionIsolation() {
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$ret = $this->dbh->query('SELECT @@tx_isolation')->fetch(PDO::FETCH_NUM);
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return $ret[0];
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}
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/**
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* Set the transacton isolation level.
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*
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* example :
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*
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* <code>
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* $conn->setTransactionIsolation('READ UNCOMMITTED');
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* </code>
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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*
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* @throws Doctrine_Connection_Mysql_Exception if using unknown isolation level
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* @throws PDOException if something fails at the PDO level
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* @return void
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*/
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public function setTransactionIsolation($isolation) {
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switch ($isolation) {
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case 'READ UNCOMMITTED':
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case 'READ COMMITTED':
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case 'REPEATABLE READ':
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case 'SERIALIZABLE':
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break;
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default:
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throw new Doctrine_Connection_Mysql_Exception('Isolation level ' . $isolation . ' is not supported.');
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}
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$query = "SET SESSION TRANSACTION ISOLATION LEVEL $isolation";
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return $this->dbh->query($query);
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}
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/**
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* Returns string to concatenate two or more string parameters
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*
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* @param string $value1
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* @param string $value2
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* @param string $values...
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* @return string a concatenation of two or more strings
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*/
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public function concat($value1, $value2) {
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$args = func_get_args();
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return "CONCAT(".implode(', ', $args).")";
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}
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}
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