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doctrine2/lib/Doctrine/Connection/Pgsql.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_Connection_Common");
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/**
* Doctrine_Connection_Pgsql
*
* @package Doctrine ORM
* @url www.phpdoctrine.com
* @license LGPL
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*/
class Doctrine_Connection_Pgsql extends Doctrine_Connection_Common {
/**
* @var string $driverName the name of this connection driver
*/
protected $driverName = 'Pgsql';
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/**
* returns the next value in the given sequence
* @param string $sequence
* @return integer
*/
public function getNextID($sequence) {
$stmt = $this->query("SELECT NEXTVAL('$sequence')");
$data = $stmt->fetch(PDO::FETCH_NUM);
return $data[0];
}
/**
* Set the transacton isolation level.
*
* @param string standard isolation level
* READ UNCOMMITTED (allows dirty reads)
* READ COMMITTED (prevents dirty reads)
* REPEATABLE READ (prevents nonrepeatable reads)
* SERIALIZABLE (prevents phantom reads)
* @return void
*/
function setTransactionIsolation($isolation) {
switch ($isolation) {
case 'READ UNCOMMITTED':
case 'READ COMMITTED':
case 'REPEATABLE READ':
case 'SERIALIZABLE':
break;
throw new Doctrine_Connection_Pgsql_Exception('Isolation level '.$isolation.' is not supported.');
}
$query = 'SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL ' . $isolation;
return $this->dbh->query($query);
}
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}