Chris@0: <?php
Chris@0: /*
Chris@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
Chris@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
Chris@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
Chris@0:  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
Chris@0:  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
Chris@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
Chris@0:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Chris@0:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Chris@0:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Chris@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Chris@0:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Chris@0:  *
Chris@0:  * This software consists of voluntary contributions made by many individuals
Chris@0:  * and is licensed under the MIT license. For more information, see
Chris@0:  * <http://www.doctrine-project.org>.
Chris@0:  */
Chris@0: 
Chris@0: namespace Doctrine\Common\Cache;
Chris@0: 
Chris@0: /**
Chris@0:  * Array cache driver.
Chris@0:  *
Chris@0:  * @link   www.doctrine-project.org
Chris@0:  * @since  2.0
Chris@0:  * @author Benjamin Eberlei <kontakt@beberlei.de>
Chris@0:  * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
Chris@0:  * @author Jonathan Wage <jonwage@gmail.com>
Chris@0:  * @author Roman Borschel <roman@code-factory.org>
Chris@0:  * @author David Abdemoulaie <dave@hobodave.com>
Chris@0:  */
Chris@0: class ArrayCache extends CacheProvider
Chris@0: {
Chris@0:     /**
Chris@0:      * @var array[] $data each element being a tuple of [$data, $expiration], where the expiration is int|bool
Chris@0:      */
Chris@0:     private $data = [];
Chris@0: 
Chris@0:     /**
Chris@0:      * @var int
Chris@0:      */
Chris@0:     private $hitsCount = 0;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var int
Chris@0:      */
Chris@0:     private $missesCount = 0;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var int
Chris@0:      */
Chris@0:     private $upTime;
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function __construct()
Chris@0:     {
Chris@0:         $this->upTime = time();
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function doFetch($id)
Chris@0:     {
Chris@0:         if (! $this->doContains($id)) {
Chris@0:             $this->missesCount += 1;
Chris@0: 
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         $this->hitsCount += 1;
Chris@0: 
Chris@0:         return $this->data[$id][0];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function doContains($id)
Chris@0:     {
Chris@0:         if (! isset($this->data[$id])) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         $expiration = $this->data[$id][1];
Chris@0: 
Chris@0:         if ($expiration && $expiration < time()) {
Chris@0:             $this->doDelete($id);
Chris@0: 
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function doSave($id, $data, $lifeTime = 0)
Chris@0:     {
Chris@0:         $this->data[$id] = [$data, $lifeTime ? time() + $lifeTime : false];
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function doDelete($id)
Chris@0:     {
Chris@0:         unset($this->data[$id]);
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function doFlush()
Chris@0:     {
Chris@0:         $this->data = [];
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     protected function doGetStats()
Chris@0:     {
Chris@0:         return [
Chris@0:             Cache::STATS_HITS             => $this->hitsCount,
Chris@0:             Cache::STATS_MISSES           => $this->missesCount,
Chris@0:             Cache::STATS_UPTIME           => $this->upTime,
Chris@0:             Cache::STATS_MEMORY_USAGE     => null,
Chris@0:             Cache::STATS_MEMORY_AVAILABLE => null,
Chris@0:         ];
Chris@0:     }
Chris@0: }