doctrine2/lib/Doctrine/Connection/Common.php

<?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.org>.
 */

/**
 * standard connection, the parent of pgsql, mysql and sqlite
 *
 * @package     Doctrine
 * @subpackage  Connection
 * @link        www.phpdoctrine.org
 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
 * @since       1.0
 * @version     $Revision$
 * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
 * @TODO Remove this class and move the modifyLimitQuery implementation to Connection.
 */
class Doctrine_Connection_Common extends Doctrine_Connection
{
    /**
     * Adds an driver-specific LIMIT clause to the query
     *
     * @param string $query
     * @param mixed $limit
     * @param mixed $offset
     * @todo 4th parameter not used? Remove?
     */
    public function modifyLimitQuery($query, $limit = false, $offset = false, $isManip = false)
    {
        $limit = (int) $limit;
        $offset = (int) $offset;
        
        if ($limit && $offset) {
            $query .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
        } elseif ($limit && ! $offset) {
            $query .= ' LIMIT ' . $limit;
        } elseif ( ! $limit && $offset) {
            $query .= ' LIMIT 999999999999 OFFSET ' . $offset;
        }

        return $query;
    }
}