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doctrine2/lib/Doctrine/Transaction/Firebird.php

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<?php
/*
* $Id$
*
* 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 COPYRIGHT
* OWNER 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.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
Doctrine::autoload('Doctrine_Transaction');
/**
*
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @package Doctrine
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
*/
class Doctrine_Transaction_Firebird extends Doctrine_Transaction {
/**
* createSavepoint
* creates a new savepoint
*
* @param string $savepoint name of a savepoint to set
* @return void
*/
public function createSavePoint($savepoint) {
$query = 'SAVEPOINT '.$savepoint;
return $this->conn->getDbh()->query($query);
}
/**
* releaseSavePoint
* releases given savepoint
*
* @param string $savepoint name of a savepoint to release
* @return void
*/
public function releaseSavePoint($savepoint) {
$query = 'RELEASE SAVEPOINT '.$savepoint;
return $this->conn->getDbh()->query($query);
}
/**
* rollbackSavePoint
* releases given savepoint
*
* @param string $savepoint name of a savepoint to rollback to
* @return void
*/
public function rollbackSavePoint($savepoint) {
$query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
return $this->conn->getDbh()->query($query);
}
/**
* Set the transacton isolation level.
*
* @param string standard isolation level (SQL-92)
* READ UNCOMMITTED (allows dirty reads)
* READ COMMITTED (prevents dirty reads)
* REPEATABLE READ (prevents nonrepeatable reads)
* SERIALIZABLE (prevents phantom reads)
*
* @param array some transaction options:
* 'wait' => 'WAIT' | 'NO WAIT'
* 'rw' => 'READ WRITE' | 'READ ONLY'
*
* @throws PDOException if something fails at the PDO level
* @throws Doctrine_Transaction_Exception if using unknown isolation level or unknown wait option
* @return void
*/
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public function setIsolation($isolation, $options = array()) {
switch ($isolation) {
case 'READ UNCOMMITTED':
$nativeIsolation = 'READ COMMITTED RECORD_VERSION';
break;
case 'READ COMMITTED':
$nativeIsolation = 'READ COMMITTED NO RECORD_VERSION';
break;
case 'REPEATABLE READ':
$nativeIsolation = 'SNAPSHOT';
break;
case 'SERIALIZABLE':
$nativeIsolation = 'SNAPSHOT TABLE STABILITY';
break;
default:
throw new Doctrine_Transaction_Exception('isolation level is not supported: ' . $isolation);
}
if( ! empty($options['wait'])) {
switch ($options['wait']) {
case 'WAIT':
case 'NO WAIT':
$wait = $options['wait'];
break;
default:
throw new Doctrine_Transaction_Exception('wait option is not supported: ' . $options['wait']);
}
}
if( ! empty($options['rw'])) {
switch ($options['rw']) {
case 'READ ONLY':
case 'READ WRITE':
$rw = $options['wait'];
break;
default:
throw new Doctrine_Transaction_Exception('wait option is not supported: ' . $options['rw']);
}
}
$query = 'SET TRANSACTION ' . $rw . ' ' . $wait .' ISOLATION LEVEL ' . $nativeIsolation;
$this->conn->getDbh()->query($query);
}
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}