public static userentity getUser(String userName, String password){
        userentity user = null;
        Session session = getSessionFactory().openSession();
        Query query = session.createQuery("from userentity where userName=:u and password=:p");
        query.setParameter("u", userName);
        query.setParameter("p", password);
        List<userentity> users = query.getResultList();
        session.close();
        if (!users.isEmpty())
            user = users.get(0);
        return user;
    }