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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; |
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use Joomla\Cache\Exception\InvalidArgumentException; |
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use Joomla\Cache\Item\HasExpirationDateInterface; |
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use Psr\Cache\CacheItemInterface; |
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/** |
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* Joomla! Caching Class |
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* |
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* @since 1.0 |
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*/ |
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abstract class AbstractCacheItemPool implements CacheItemPoolInterface |
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{ |
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/** |
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* The options for the cache object. |
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* |
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* @var array|\ArrayAccess |
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* @since 1.0 |
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*/ |
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protected $options; |
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/** |
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* The deferred items to store |
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* |
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* @var \Joomla\Cache\Item\Item[] |
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* @since 1.0 |
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*/ |
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private $deferred = []; |
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/** |
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* Constructor. |
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* |
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* @param array|\ArrayAccess $options An options array, or an object that implements \ArrayAccess |
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* |
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* @since 1.0 |
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* @throws \RuntimeException |
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*/ |
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public function __construct($options = []) |
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{ |
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if (!($options instanceof \ArrayAccess || is_array($options))) |
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{ |
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throw new InvalidArgumentException(sprintf('%s requires an options array or an object that implements \\ArrayAccess', __CLASS__)); |
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} |
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$this->options = $options; |
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} |
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/** |
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* Returns a traversable set of cache items. |
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* |
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* @param array $keys A list of keys that can obtained in a single operation. |
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* |
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* @return CacheItemInterface[] An associative array of CacheItemInterface objects keyed on the cache key. |
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* |
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* @since 1.0 |
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*/ |
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public function getItems(array $keys = []) |
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{ |
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$result = []; |
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foreach ($keys as $key) |
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{ |
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$result[$key] = $this->getItem($key); |
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} |
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return $result; |
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} |
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/** |
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* Get an option from the Cache instance. |
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* |
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* @param string $key The name of the option to get. |
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* |
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* @return mixed The option value. |
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* |
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* @since 1.0 |
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*/ |
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public function getOption($key) |
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{ |
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return isset($this->options[$key]) ? $this->options[$key] : null; |
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} |
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/** |
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* Removes multiple items from the pool. |
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* |
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* @param array $keys An array of keys that should be removed from the pool. |
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* |
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* @return boolean |
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* |
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* @since 1.0 |
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*/ |
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public function deleteItems(array $keys) |
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{ |
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$result = true; |
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foreach ($keys as $key) |
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{ |
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if (!$this->deleteItem($key)) |
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{ |
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$result = false; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Set an option for the Cache instance. |
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* |
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* @param string $key The name of the option to set. |
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* @param mixed $value The option value to set. |
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* |
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* @return $this |
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* |
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* @since 1.0 |
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*/ |
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public function setOption($key, $value) |
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{ |
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$this->options[$key] = $value; |
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return $this; |
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} |
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/** |
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* Sets a cache item to be persisted later. |
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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 False if the item could not be queued or if a commit was attempted and failed. True otherwise. |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public function saveDeferred(CacheItemInterface $item) |
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{ |
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$this->deferred[$item->getKey()] = $item; |
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return true; |
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} |
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/** |
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* Persists any deferred cache items. |
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* |
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* @return boolean True if all not-yet-saved items were successfully saved or there were none. False otherwise. |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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public function commit() |
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{ |
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$result = true; |
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foreach ($this->deferred as $key => $deferred) |
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{ |
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$saveResult = $this->save($deferred); |
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if (true === $saveResult) |
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{ |
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unset($this->deferred[$key]); |
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} |
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$result = $result && $saveResult; |
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} |
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return $result; |
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} |
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/** |
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* Converts a DateTime object from the cache item to the expiry time in seconds from the present |
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* |
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* @param HasExpirationDateInterface $item The cache item |
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* |
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* @return integer The time in seconds until expiry |
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* |
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* @since __DEPLOY_VERSION__ |
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*/ |
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protected function convertItemExpiryToSeconds(HasExpirationDateInterface $item) |
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{ |
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$itemExpiry = $item->getExpiration(); |
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$itemTimezone = $itemExpiry->getTimezone(); |
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$now = new \DateTime('now', $itemTimezone); |
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$interval = $now->diff($itemExpiry); |
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return (int) $interval->format('%s'); |
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} |
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} |
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