Serializer serializer = new Persister(strategy, matcher);
matcher.bind(Long.class, LongTransform.class);
matcher.bind(Integer.class, IntegerTransform.class);
registry.bind(User.class, new UserConverter(usersDao, usersMap));
registry.bind(RoomType.class, new RoomTypeConverter(roomManager));
List<Room> list = readList(serializer, f, "rooms.xml", "rooms", Room.class);
for (Room r : list) {
Long roomId = r.getRooms_id();