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<?php
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/*
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* Copyright 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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require_once "Google_FileCache.php";
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require_once "Google_MemcacheCache.php";
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/**
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* Abstract storage class
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*
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* @author Chris Chabot <chabotc@google.com>
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*/
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abstract class Google_Cache {
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/**
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* Retrieves the data for the given key, or false if they
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* key is unknown or expired
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*
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* @param String $key The key who's data to retrieve
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* @param boolean|int $expiration Expiration time in seconds
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*
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*/
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abstract function get($key, $expiration = false);
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/**
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* Store the key => $value set. The $value is serialized
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* by this function so can be of any type
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*
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* @param string $key Key of the data
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* @param string $value data
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*/
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abstract function set($key, $value);
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/**
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* Removes the key/data pair for the given $key
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*
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* @param String $key
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*/
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abstract function delete($key);
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}
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