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<?php |
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/** |
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* Part of the Joomla Framework Cache Package |
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* |
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* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved. |
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* @license GNU General Public License version 2 or later; see LICENSE |
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*/ |
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namespace Joomla\Cache\Adapter; |
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use Joomla\Cache\AbstractCacheItemPool; |
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use Joomla\Cache\Item\Item; |
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use Psr\Cache\CacheItemInterface; |
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/** |
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* Runtime cache only driver for the Joomla Framework. |
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* |
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* @since 1.0 |
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*/ |
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class None extends AbstractCacheItemPool |
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{ |
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/** |
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* This will wipe out the entire cache's keys |
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* |
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* @return boolean True if the pool was successfully cleared. False if there was an error. |
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* |
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* @since 1.0 |
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*/ |
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public function clear() |
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{ |
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return true; |
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} |
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/** |
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* Returns a Cache Item representing the specified key. |
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* |
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* @param string $key The key for which to return the corresponding Cache Item. |
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* |
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* @return CacheItemInterface The corresponding Cache Item. |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public function getItem($key) |
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{ |
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return new Item($key); |
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} |
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/** |
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* Removes the item from the pool. |
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* |
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* @param string $key The key to delete. |
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* |
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* @return boolean True if the item was successfully removed. False if there was an error. |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public function deleteItem($key) |
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{ |
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return true; |
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} |
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/** |
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* Persists a cache item immediately. |
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* |
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* @param CacheItemInterface $item The cache item to save. |
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* |
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* @return boolean True if the item was successfully persisted. False if there was an error. |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public function save(CacheItemInterface $item) |
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{ |
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return true; |
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} |
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/** |
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* Confirms if the cache contains specified cache item. |
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* |
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* @param string $key The key for which to check existence. |
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* |
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* @return boolean True if item exists in the cache, false otherwise. |
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* |
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* @since 1.0 |
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*/ |
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public function hasItem($key) |
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{ |
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return false; |
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} |
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/** |
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* Fetches a value from the cache. |
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* |
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* @param string $key The unique key of this item in the cache. |
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* @param mixed $default Default value to return if the key does not exist. |
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* |
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* @return mixed The value of the item from the cache, or $default in case of cache miss. |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public function get($key, $default = null) |
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{ |
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return $default; |
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} |
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/** |
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* Test to see if the CacheItemPoolInterface is available |
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* |
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* @return boolean True on success, false otherwise |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public static function isSupported() |
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{ |
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return true; |
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} |
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} |
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joomla-framework /
cache
