+++ /dev/null
-<?php
-/**
- * A simple memory cache (similar to a registry)
- *
- * @author Roland Haeder <webmaster@shipsimu.org>
- * @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
- * @license GNU GPL 3.0 or any newer version
- * @link http://www.shipsimu.org
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-class MemoryCache extends BaseFrameworkSystem implements Cacheable {
- /**
- * The "memory cache" is simply a wrapped object array
- */
- private $dataCache = NULL;
-
- /**
- * Protected constructor
- *
- * @return void
- */
- protected function __construct () {
- // Call parent constructor
- parent::__construct(__CLASS__);
- }
-
- /**
- * Creates an instance of this class
- *
- * @return $cacheInstance An instance of this cache class
- */
- public static final function createMemoryCache () {
- // Get a new instance
- $cacheInstance = new MemoryCache();
-
- // Initialize the cache
- $cacheInstance->initCache();
-
- // Return the prepared instance
- return $cacheInstance;
- }
-
- /**
- * Initialize this cache by creating an object array
- *
- * @return void
- */
- protected function initCache () {
- // Now create the "data cache"
- $this->dataCache = new FrameworkArrayObject('FakedDataCache');
- }
-
- /**
- * Does the specified offset exist in cache?
- *
- * @param $offset The offset we are looking for
- * @param $arrayElement If type is array, then this element must be found
- * @param $minimumCount If array element is found then this count must at least match
- * @return $exists Whether the offset exists
- */
- public function offsetExists ($offset, $arrayElement = NULL, $minimumCount = 0) {
- // Is it there?
- $exists = $this->dataCache->offsetExists($offset);
-
- // So look for array element?
- if (($exists === TRUE) && (!is_null($arrayElement))) {
- // Get it
- $array = $this->offsetGet($offset);
-
- // Is it an array and element is found?
- if ((is_array($array)) && (isset($array[$arrayElement]))) {
- // Is an array and element is found, so check count
- $exists = (count($array[$arrayElement]) >= $minimumCount);
- } else {
- // Not found
- $exists = FALSE;
- }
- } // END - if
-
- // Return status
- return $exists;
- }
-
- /**
- * Setter for cache offset
- *
- * @param $offset The offset we shall set
- * @param $data Data to store in cache
- * @return void
- */
- public function offsetSet ($offset, $data) {
- $this->dataCache->offsetSet($offset, $data);
- }
-
- /**
- * Getter for cache offset or "null" if not found
- *
- * @param $offset The offset we shall set
- * @return $data Data to store in cache
- */
- public function offsetGet ($offset) {
- // Default is offset not found
- $data = NULL;
-
- // Is the offset there?
- if ($this->offsetExists($offset)) {
- // Then get the data from it
- $data = $this->dataCache->offsetGet($offset);
- } // END - if
-
- // Return data
- return $data;
- }
-
- /**
- * Purges the given cache entry
- *
- * @param $offset The offset we shall set
- * @return void
- */
- public function purgeOffset ($offset) {
- // Is the offset there?
- if ($this->offsetExists($offset)) {
- // Purge only existing keys
- //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('CACHE: Unsetting cache ' . $offset);
- $this->dataCache->offsetUnset($offset);
- } // END - if
- }
-}
-
-// [EOF]
-?>