+<?php
+/**
+ * A simple memory cache (similar to a registry)
+ *
+ * @author Roland Haeder <webmaster@ship-simu.org>
+ * @version 0.3.0
+ * @copyright Copyright(c) 2007, 2008 Roland Haeder, this is free software
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.mxchange.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;
+
+ /**
+ * Private constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+
+ // Set part description
+ $this->setObjectDescription("Memory cache");
+
+ // Create unique ID number
+ $this->createUniqueID();
+
+ // Clean up a little
+ $this->removeNumberFormaters();
+ $this->removeSystemArray();
+ }
+
+ /**
+ * Creates an instance of this class
+ *
+ * @return $cacheInstance An instance of this cache class
+ */
+ public final static 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();
+ }
+
+ /**
+ * Does the specified offset exist in cache?
+ *
+ * @param $offset The offsrt we are looking for
+ * @return $exists Wether the offset exists
+ */
+ public final function offsetExists ($offset) {
+ $exists = $this->dataCache->offsetExists($offset);
+ return $exists;
+ }
+}
+
+// [EOF]
+?>
projects / shipsimu.git / commitdiff