<?php /* * $Id: Db.php 3931 2008-03-05 11:24:33Z romanb $ * * 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.doctrine-project.org>. */ namespace Doctrine\ORM\Cache; /** * Doctrine_Cache_Db * * @license http://www.opensource.org/licenses/lgpl-license.php LGPL * @link www.doctrine-project.org * @since 1.0 * @version $Revision: 3931 $ * @author Konsta Vesterinen <kvesteri@cc.hut.fi> * @todo Needs some maintenance. Any takers? */ class DbCache implements Cache, \Countable { private $_options = array(); /** * {@inheritdoc} */ public function __construct($options) { if ( ! isset($options['connection']) || ! ($options['connection'] instanceof Doctrine_DBAL_Connection)) { throw \Doctrine\Common\DoctrineException::updateMe('Connection option not set.'); } if ( ! isset($options['tableName']) || ! is_string($options['tableName'])) { throw \Doctrine\Common\DoctrineException::updateMe('Table name option not set.'); } $this->_options = $options; } /** * getConnection * returns the connection object associated with this cache driver * * @return Doctrine_Connection connection object */ public function getConnection() { return $this->_options['connection']; } /** * {@inheritdoc} */ public function fetch($id) { $sql = 'SELECT data, expire FROM ' . $this->_options['tableName'] . ' WHERE id = ?'; if ($testCacheValidity) { $sql .= ' AND (expire=0 OR expire > ' . time() . ')'; } $result = $this->getConnection()->fetchAssoc($sql, array($id)); if ( ! isset($result[0])) { return false; } return unserialize($result[0]['data']); } /** * {@inheritdoc} */ public function contains($id) { $sql = 'SELECT expire FROM ' . $this->_options['tableName'] . ' WHERE id = ? AND (expire=0 OR expire > ' . time() . ')'; return $this->getConnection()->fetchOne($sql, array($id)); } /** * {@inheritdoc} */ public function save($data, $id, $lifeTime = false) { $sql = 'INSERT INTO ' . $this->_options['tableName'] . ' (id, data, expire) VALUES (?, ?, ?)'; if ($lifeTime) { $expire = time() + $lifeTime; } else { $expire = 0; } $params = array($id, serialize($data), $expire); return (bool) $this->getConnection()->exec($sql, $params); } /** * {@inheritdoc} */ public function delete($id) { $sql = 'DELETE FROM ' . $this->_options['tableName'] . ' WHERE id = ?'; return (bool) $this->getConnection()->exec($sql, array($id)); } /** * Removes all cache records * * $return bool true on success, false on failure */ public function deleteAll() { $sql = 'DELETE FROM ' . $this->_options['tableName']; return (bool) $this->getConnection()->exec($sql); } /** * count * returns the number of cached elements * * @return integer */ public function count() { $sql = 'SELECT COUNT(*) FROM ' . $this->_options['tableName']; return (int) $this->getConnection()->fetchOne($sql); } /** * Creates the cache table. */ public function createTable() { $name = $this->_options['tableName']; $fields = array( 'id' => array( 'type' => 'string', 'length' => 255 ), 'data' => array( 'type' => 'blob' ), 'expire' => array( 'type' => 'timestamp' ) ); $options = array( 'primary' => array('id') ); $this->getConnection()->export->createTable($name, $fields, $options); } }