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<?php |
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namespace Psr6NullCache; |
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use Psr\Cache\CacheItemInterface; |
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final class CacheItem implements CacheItemInterface |
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{ |
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/** |
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* |
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* @var string |
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*/ |
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private $key; |
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/** |
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* |
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* @var mixed |
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*/ |
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private $value; |
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/** |
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* |
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* @var boolean |
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*/ |
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private $isHit; |
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public function __construct($key, $value, $isHit) |
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{ |
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$this->key = $key; |
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$this->value = $value; |
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$this->isHit = (bool) $isHit; |
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} |
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/** |
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* Returns the key for the current cache item. |
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* |
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* The key is loaded by the Implementing Library, but should be available to |
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* the higher level callers when needed. |
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* |
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* @return string The key string for this cache item. |
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*/ |
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public function getKey() |
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{ |
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return $this->key; |
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} |
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/** |
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* Retrieves the value of the item from the cache associated with this object's key. |
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* |
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* The value returned must be identical to the value originally stored by set(). |
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* |
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* If isHit() returns false, this method MUST return null. Note that null |
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* is a legitimate cached value, so the isHit() method SHOULD be used to |
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* differentiate between "null value was found" and "no value was found." |
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* |
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* @return mixed The value corresponding to this cache item's key, or null if not found. |
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*/ |
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public function get() |
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{ |
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return $this->value; |
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} |
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/** |
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* Confirms if the cache item lookup resulted in a cache hit. |
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* |
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* Note: This method MUST NOT have a race condition between calling isHit() |
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* and calling get(). |
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* |
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* @return bool True if the request resulted in a cache hit. False otherwise. |
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*/ |
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public function isHit() |
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{ |
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return $this->isHit; |
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} |
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/** |
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* Sets the value represented by this cache item. |
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* |
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* The $value argument may be any item that can be serialized by PHP, |
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* although the method of serialization is left up to the Implementing |
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* Library. |
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* |
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* @param mixed $value |
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* The serializable value to be stored. |
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* |
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* @return static The invoked object. |
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*/ |
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public function set($value) |
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{ |
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$this->value = $value; |
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return $this; |
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} |
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/** |
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* Sets the expiration time for this cache item. |
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* |
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* @param \DateTimeInterface $expiration |
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* The point in time after which the item MUST be considered expired. |
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* If null is passed explicitly, a default value MAY be used. If none is set, |
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* the value should be stored permanently or for as long as the |
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* implementation allows. |
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* |
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* @return static The called object. |
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*/ |
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public function expiresAt($expiration) |
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{ |
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return $this; |
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} |
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/** |
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* Sets the expiration time for this cache item. |
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* |
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* @param int|\DateInterval $time |
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* The period of time from the present after which the item MUST be considered |
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* expired. An integer parameter is understood to be the time in seconds until |
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* expiration. If null is passed explicitly, a default value MAY be used. |
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* If none is set, the value should be stored permanently or for as long as the |
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* implementation allows. |
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* |
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* @return static The called object. |
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*/ |
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public function expiresAfter($time) |
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{ |
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return $this; |
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} |
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} |
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ThaDafinser /
psr6-null-cache
