Mercurial > hg > isophonics-drupal-site
diff vendor/doctrine/cache/lib/Doctrine/Common/Cache/Cache.php @ 0:4c8ae668cc8c
Initial import (non-working)
author | Chris Cannam |
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date | Wed, 29 Nov 2017 16:09:58 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/vendor/doctrine/cache/lib/Doctrine/Common/Cache/Cache.php Wed Nov 29 16:09:58 2017 +0000 @@ -0,0 +1,116 @@ +<?php +/* + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This software consists of voluntary contributions made by many individuals + * and is licensed under the MIT license. For more information, see + * <http://www.doctrine-project.org>. + */ + +namespace Doctrine\Common\Cache; + +/** + * Interface for cache drivers. + * + * @link www.doctrine-project.org + * @since 2.0 + * @author Benjamin Eberlei <kontakt@beberlei.de> + * @author Guilherme Blanco <guilhermeblanco@hotmail.com> + * @author Jonathan Wage <jonwage@gmail.com> + * @author Roman Borschel <roman@code-factory.org> + * @author Fabio B. Silva <fabio.bat.silva@gmail.com> + * @author Kévin Dunglas <dunglas@gmail.com> + */ +interface Cache +{ + const STATS_HITS = 'hits'; + const STATS_MISSES = 'misses'; + const STATS_UPTIME = 'uptime'; + const STATS_MEMORY_USAGE = 'memory_usage'; + const STATS_MEMORY_AVAILABLE = 'memory_available'; + /** + * Only for backward compatibility (may be removed in next major release) + * + * @deprecated + */ + const STATS_MEMORY_AVAILIABLE = 'memory_available'; + + /** + * Fetches an entry from the cache. + * + * @param string $id The id of the cache entry to fetch. + * + * @return mixed The cached data or FALSE, if no cache entry exists for the given id. + */ + public function fetch($id); + + /** + * Tests if an entry exists in the cache. + * + * @param string $id The cache id of the entry to check for. + * + * @return bool TRUE if a cache entry exists for the given cache id, FALSE otherwise. + */ + public function contains($id); + + /** + * Puts data into the cache. + * + * If a cache entry with the given id already exists, its data will be replaced. + * + * @param string $id The cache id. + * @param mixed $data The cache entry/data. + * @param int $lifeTime The lifetime in number of seconds for this cache entry. + * If zero (the default), the entry never expires (although it may be deleted from the cache + * to make place for other entries). + * + * @return bool TRUE if the entry was successfully stored in the cache, FALSE otherwise. + */ + public function save($id, $data, $lifeTime = 0); + + /** + * Deletes a cache entry. + * + * @param string $id The cache id. + * + * @return bool TRUE if the cache entry was successfully deleted, FALSE otherwise. + * Deleting a non-existing entry is considered successful. + */ + public function delete($id); + + /** + * Retrieves cached information from the data store. + * + * The server's statistics array has the following values: + * + * - <b>hits</b> + * Number of keys that have been requested and found present. + * + * - <b>misses</b> + * Number of items that have been requested and not found. + * + * - <b>uptime</b> + * Time that the server is running. + * + * - <b>memory_usage</b> + * Memory used by this server to store items. + * + * - <b>memory_available</b> + * Memory allowed to use for storage. + * + * @since 2.2 + * + * @return array|null An associative array with server's statistics if available, NULL otherwise. + */ + public function getStats(); +}