Read only cache peer

core/Cache/ReadOnlyPeer.class.php

@@ -0,0 +1,89 @@
+<?php
+	/***************************************************************************
+	 *   Copyright (C) 2011 by Alexander A. Klestov                            *
+	 *                                                                         *
+	 *   This program is free software; you can redistribute it and/or modify  *
+	 *   it under the terms of the GNU Lesser General Public License as        *
+	 *   published by the Free Software Foundation; either version 3 of the    *
+	 *   License, or (at your option) any later version.                       *
+	 *                                                                         *
+	 ***************************************************************************/
+
+	/**
+	 * Cache with read-only access.
+	 *
+	 * @ingroup Cache
+	**/
+	final class ReadOnlyPeer extends CachePeer
+	{
+		/**
+		 * @var CachePeer
+		 */
+		private $innerPeer = null;
+
+		/**
+		 * @return ReadOnlyPeer
+		 */
+		public static function create(CachePeer $peer)
+		{
+			return new ReadOnlyPeer($peer);
+		}
+
+		public function __construct(CachePeer $peer)
+		{
+			$this->innerPeer = $peer;
+		}
+
+		public function isAlive()
+		{
+			return $this->innerPeer->isAlive();
+		}
+
+		public function mark($className)
+		{
+			return $this->innerPeer->mark($className);
+		}
+
+		public function get($key)
+		{
+			return $this->innerPeer->get($key);
+		}
+
+		public function getList($indexes)
+		{
+			return $this->innerPeer->getList($indexes);
+		}
+
+		public function clean()
+		{
+			throw new UnsupportedMethodException();
+		}
+
+		public function increment($key, $value)
+		{
+			throw new UnsupportedMethodException();
+		}
+
+		public function decrement($key, $value)
+		{
+			throw new UnsupportedMethodException();
+		}
+
+		public function delete($index, $time = null)
+		{
+			throw new UnsupportedMethodException();
+		}
+
+		public function append($key, $data)
+		{
+			throw new UnsupportedMethodException();
+		}
+
+		protected function store(
+			$method, $index, $value, $expires = Cache::EXPIRES_MINIMUM
+		)
+		{
+			throw new UnsupportedMethodException();
+		}
+	}
+?>