[+] Classes: add local cache system

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@10729 b9a71923-0436-4b27-9f14-aed3839534dd

classes/cache/Cache.php

@@ -70,6 +70,11 @@ abstract class CacheCore
 		'page_viewed',
 	);
 
+	/**
+	 * @var array Store local cache
+	 */
+	protected static $local = array();
+
 	/**
 	 * Cache a data
 	 *
@@ -291,4 +296,24 @@ abstract class CacheCore
 				return true;
 		return false;
 	}
+
+	public static function store($key, $value)
+	{
+		Cache::$local[$key] = $value;
+	}
+
+	public static function retrieve($key)
+	{
+		return isset(Cache::$local[$key]) ? Cache::$local[$key] : null;
+	}
+
+	public static function isStored($key)
+	{
+		return isset(Cache::$local[$key]);
+	}
+
+	public static function clean($key)
+	{
+		unset(Cache::$local[$key]);
+	}
 }