private static final ThreadLocal threadSession = new ThreadLocal();
private static final ThreadLocal threadTransaction = new ThreadLocal();

public GenericDao(final Class<T> objectClass) {
    this.objectClass = objectClass;
}

public Class<T> getObjectClass() {
    return this.objectClass;
}

public T save(final T object) throws HibernateException {
    try {
        final Session s = this.getSessionHibernate();
        s.beginTransaction();
        s.save(object);
        s.getTransaction().commit();
        s.flush();

        return object;
    } catch (final HibernateException ex) {
        GenericDao.logger.error(ex);

        Session s = this.getSessionHibernate();
        s.getTransaction().rollback();
        s.clear();

        throw new HibernateException(ex);
    }
}

public void update(final T object) throws HibernateException {
    try {
        final Session s = this.getSessionHibernate();
        s.update(object);

    } catch (final HibernateException ex) {
        GenericDao.logger.error(ex);

        Session s = this.getSessionHibernate();
        s.getTransaction().rollback();
        s.clear();

        throw new HibernateException(ex);
    }
}