diff --git a/file/lib/data/chat/room/ChatRoom.class.php b/file/lib/data/chat/room/ChatRoom.class.php
new file mode 100644
index 0000000..dc1bc5b
--- /dev/null
+++ b/file/lib/data/chat/room/ChatRoom.class.php
@@ -0,0 +1,52 @@
+<?php
+namespace wcf\data\chat\room;
+
+/**
+ * Represents a chat room.
+ *
+ * @author 	Tim Düsterhus
+ * @copyright	2010-2011 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	timwolla.wcf.chat
+ * @subpackage	data.chat.room
+ */
+class ChatRoom extends \wcf\data\DatabaseObject {
+	/**
+	 * @see	wcf\data\DatabaseObject::$databaseTableName
+	 */
+	protected static $databaseTableName = 'chat_room';
+	
+	/**
+	 * @see	wcf\data\DatabaseObject::$databaseTableIndexName
+	 */
+	protected static $databaseTableIndexName = 'roomID';
+		
+	/**
+	 * Caches rooms.
+	 * 
+	 * @var	array<wcf\data\chat\room\ChatRoom>
+	 */
+	protected static $cache = null;
+	
+	/**
+	 * Loads the room cache.
+	 */
+	protected static function getCache() {
+		if (self::$cache !== null) return;
+		CacheHandler::getInstance()->addResource(
+			'chatrooms',
+			WCF_DIR.'cache/cache.chatrooms.php',
+			'wcf\system\cache\builder\ChatRoomCacheBuilder'
+		);
+		self::$cache = CacheHandler::getInstance()->get('chatrooms');
+	}
+	
+	/**
+	 * Returns the name of this chat-room.
+	 * 
+	 * @return	string
+	 */
+	public function __tostring() {
+		return $this->title;
+	}
+}
diff --git a/file/lib/data/chat/room/ChatRoomList.class.php b/file/lib/data/chat/room/ChatRoomList.class.php
new file mode 100644
index 0000000..0c34470
--- /dev/null
+++ b/file/lib/data/chat/room/ChatRoomList.class.php
@@ -0,0 +1,18 @@
+<?php
+namespace wcf\data\chat\room;
+
+/**
+ * Represents a list of chat rooms.
+ * 
+ * @author 	Tim Düsterhus
+ * @copyright	2010-2011 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	timwolla.wcf.chat
+ * @subpackage	data.chat.room
+ */
+class ChatRoomList extends \wcf\data\DatabaseObjectList {
+	/**
+	 * @see	wcf\data\DatabaseObjectList::$className
+	 */
+	public $className = 'wcf\data\chat\room\ChatRoom';
+}
diff --git a/file/lib/system/cache/builder/ChatRoomCacheBuilder.class.php b/file/lib/system/cache/builder/ChatRoomCacheBuilder.class.php
new file mode 100644
index 0000000..c645d67
--- /dev/null
+++ b/file/lib/system/cache/builder/ChatRoomCacheBuilder.class.php
@@ -0,0 +1,27 @@
+<?php
+namespace wcf\system\cache\builder;
+
+/**
+ * Caches all chat rooms.
+ * 
+ * @author	Tim Düsterhus
+ * @copyright	2010-2011 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	timwolla.wcf.chat
+ * @subpackage	system.cache.builder
+ */
+class ChatRoomCacheBuilder implements ICacheBuilder {
+	/**
+	 * @see wcf\system\cache\ICacheBuilder::getData()
+	 */
+	public function getData(array $cacheResource) {
+		// get all chat rooms
+		$roomList = new \wcf\data\chat\room\ChatRoomList();
+		$roomList->sqlOrderBy = "chat_room.position";
+		$roomList->sqlLimit = 0;
+		$roomList->readObjects();
+		$rooms = $roomList->getObjects();
+		
+		return $rooms;
+	}
+}