public static SessionFactory wrapSessionFactory(final SessionFactory sessionFactory) {

     return (SessionFactory)Proxy.newInstacne(
          SessionFactory.class.getClassLoader(),
          sessionFactory.getClass().getInterfaces(),
          new InvocationHandler(Object proxy, Method method, Object[] args) throws Throwable {
              Object retval = method.invoke(sessionFactory, args);
              if (retval instanceof Session && method.getName.equals("openSession") {
                    Session session = (Session)retval;
                    session.setFlushMode(FlushMode.COMMIT);
              }
              return retval;
          }
     );
}

public static EntityManagerFactory wrapEntityManagerFactory(final EntiyManagerFactory entityManagerFactory) {

     return (EntityManagerFactory)Proxy.newInstacne(
          EntiyManagerFactory.class.getClassLoader(),
          entityManagerFactory.getClass().getInterfaces(),
          new InvocationHandler(Object proxy, Method method, Object[] args) throws Throwable {
              Object retval = method.invoke(entityManagerFactory, args);
              if (retval instanceof EntiyManager && method.getName.equals("createEntityManager") {
                    EntityManager entityManager = (EntityManager)retval;
                    entityManager.unwrap(Session.class).setFlushMode(FlushMode.COMMIT);
              }
              return retval;
          }
     );
}