CHIEFSOFT\ameye
94 lines
2.2 KiB
PHP
94 lines
2.2 KiB
PHP
<?php
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/**
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* @file classes/cache/APCCache.php
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*
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* Copyright (c) 2014-2021 Simon Fraser University
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* Copyright (c) 2000-2021 John Willinsky
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* Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
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*
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* @class apc_false
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*
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* @ingroup cache
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*
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* @see GenericCache
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*
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* @brief Provides caching based on APC's variable store.
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*/
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namespace PKP\cache;
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class apc_false
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{
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};
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class APCCache extends GenericCache
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{
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/**
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* Flush the cache.
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*/
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public function flush()
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{
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$prefix = INDEX_FILE_LOCATION . ':' . $this->getContext() . ':' . $this->getCacheId();
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$info = apc_cache_info('user');
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foreach ($info['cache_list'] as $entry) {
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if (substr($entry['info'], 0, strlen($prefix)) == $prefix) {
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apc_delete($entry['info']);
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}
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}
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}
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/**
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* Get an object from the cache.
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*
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*/
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public function getCache($id)
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{
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$key = INDEX_FILE_LOCATION . ':' . $this->getContext() . ':' . $this->getCacheId() . ':' . $id;
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$returner = unserialize(apc_fetch($key));
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if ($returner === false) {
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return $this->cacheMiss;
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}
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if ($returner instanceof apc_false) {
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$returner = false;
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}
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return $returner;
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}
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/**
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* Set an object in the cache. This function should be overridden
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* by subclasses.
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*
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*/
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public function setCache($id, $value)
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{
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$key = INDEX_FILE_LOCATION . ':' . $this->getContext() . ':' . $this->getCacheId() . ':' . $id;
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if ($value === false) {
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$value = new apc_false();
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}
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apc_store($key, serialize($value));
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}
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/**
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* Get the time at which the data was cached.
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* Not implemented in this type of cache.
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*/
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public function getCacheTime()
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{
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return null;
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}
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/**
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* Set the entire contents of the cache.
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* WARNING: THIS DOES NOT FLUSH THE CACHE FIRST!
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*
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* @param array $contents Complete cache contents.
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*/
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public function setEntireCache($contents)
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{
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foreach ($contents as $id => $value) {
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$this->setCache($id, $value);
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}
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}
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}
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