Minor cleanups:

[core.git] / inc / classes / main / cache / class_MemoryCache.php

diff --git a/inc/classes/main/cache/class_MemoryCache.php b/inc/classes/main/cache/class_MemoryCache.php
index da004138ed9f0216082c2a4afea1d9124c13cc3d..61248e0cfddbd89b3f22f29023c2a2b3bd46138e 100644 (file)
--- a/inc/classes/main/cache/class_MemoryCache.php
+++ b/inc/classes/main/cache/class_MemoryCache.php
@@ -4,7 +4,7 @@
  *
  * @author             Roland Haeder <webmaster@ship-simu.org>
  * @version            0.0.0
- * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 Core Developer Team
+ * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2011 Core Developer Team
  * @license            GNU GPL 3.0 or any newer version
  * @link               http://www.ship-simu.org
  *
@@ -25,7 +25,7 @@ class MemoryCache extends BaseFrameworkSystem implements Cacheable {
        /**
         * The "memory cache" is simply a wrapped object array
         */
-       private $dataCache = null;
+       private $dataCache = NULL;
 
        /**
         * Protected constructor
@@ -42,7 +42,7 @@ class MemoryCache extends BaseFrameworkSystem implements Cacheable {
         *
         * @return      $cacheInstance  An instance of this cache class
         */
-       public final static function createMemoryCache () {
+       public static final function createMemoryCache () {
                // Get a new instance
                $cacheInstance = new MemoryCache();
 
@@ -69,7 +69,7 @@ class MemoryCache extends BaseFrameworkSystem implements Cacheable {
         * @param       $offset         The offset we are looking for
         * @return      $exists         Wether the offset exists
         */
-       public final function offsetExists ($offset) {
+       public function offsetExists ($offset) {
                $exists = $this->dataCache->offsetExists($offset);
                return $exists;
        }
@@ -81,7 +81,7 @@ class MemoryCache extends BaseFrameworkSystem implements Cacheable {
         * @param       $data           Data to store in cache
         * @return      void
         */
-       public final function offsetSet ($offset, $data) {
+       public function offsetSet ($offset, $data) {
                $this->dataCache->offsetSet($offset, $data);
        }
 
@@ -91,19 +91,34 @@ class MemoryCache extends BaseFrameworkSystem implements Cacheable {
         * @param       $offset         The offset we shall set
         * @return      $data           Data to store in cache
         */
-       public final function offsetGet ($offset) {
+       public function offsetGet ($offset) {
                // Default is offset not found
-               $data = null;
+               $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: */ $this->debugOutput('CACHE: Unsetting cache ' . $offset);
+                       $this->dataCache->offsetUnset($offset);
+               } // END - if
+       }
 }
 
 // [EOF]