<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Plume Framework, a simple PHP Application Framework.
# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.
#
# Plume Framework is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Plume Framework is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# ***** END LICENSE BLOCK ***** */
/**
* Cache class.
*
* You should not use this class directly, but one of the subclasses
* implementing a given engine.
*
* Default timeout in seconds is defined by the 'cache_timeout'
* configuration variable.
*
* <code>
* $cache = new Pluf_Cache_File();
* if (null === ($foo=$cache->get('my-key'))) {
* $foo = run_complex_operation();
* $cache->set('my-key', $foo);
* }
* return $foo;
* </code>
*
* The value to be stored in the cache must be serializable.
*
* @see http://www.php.net/serialize
*/
class Pluf_Cache
{
/**
* Set a value in the cache.
*
* @param string Key to store the information
* @param mixed Value to store
* @param int Timeout in seconds (null)
* @return bool Success
*/
public function set($key, $value, $timeout=null)
{
throw new Pluf_Exception_NotImplemented();
}
/**
* Get value from the cache.
*
* @param string Key to get the information
* @param mixed Default value to return if cache miss (null)
* @param mixed Stored value or default
*/
public function get($key, $default=null)
{
throw new Pluf_Exception_NotImplemented();
}
}