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<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Memcache;
abstract class Cache implements \ArrayAccess, \OCP\ICache {
/**
* @var string $prefix
*/
protected $prefix;
/**
* @param string $prefix
*/
public function __construct($prefix = '') {
$this->prefix = $prefix;
}
/**
* @return string Prefix used for caching purposes
*/
public function getPrefix() {
return $this->prefix;
}
/**
* @param string $key
* @return mixed
*/
abstract public function get($key);
/**
* @param string $key
* @param mixed $value
* @param int $ttl
* @return mixed
*/
abstract public function set($key, $value, $ttl = 0);
/**
* @param string $key
* @return mixed
*/
abstract public function hasKey($key);
/**
* @param string $key
* @return mixed
*/
abstract public function remove($key);
/**
* @param string $prefix
* @return mixed
*/
abstract public function clear($prefix = '');
//implement the ArrayAccess interface
public function offsetExists($offset) {
return $this->hasKey($offset);
}
public function offsetSet($offset, $value) {
$this->set($offset, $value);
}
public function offsetGet($offset) {
return $this->get($offset);
}
public function offsetUnset($offset) {
$this->remove($offset);
}
}
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