// try updating
final UpdateOperations<Hotel> mods = hotelDAO.createUpdateOperations().inc("stars", 1);
hotelDAO.update(hotelDAO.createQuery().filter("stars", 4), mods);
assertEquals(2, hotelDAO.count(hotelDAO.createQuery().filter("stars", 5)));
hotelDAO.deleteById(borg.getId());
assertEquals(1, hotelDAO.count());
hotelDAO.getCollection().drop();
assertEquals(0, hotelDAO.count());
}