private static final SessionFactory ourSessionFactory;
    final Session session;
    static {
        try {
            Configuration configuration = new Configuration();
            configuration.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
            configuration.configure();
            ourSessionFactory = configuration.buildSessionFactory();
        } catch (Throwable ex) {
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static Session getSession() throws HibernateException {
        return ourSessionFactory.openSession();
    }

    public DataModule() {
        session = getSession();
    }