@Component
@Transactional
public class TestBean  {

    @PersistenceContext
    private EntityManager entityManager;

    public void init()  {
        // create table orders
        entityManager
                .createNativeQuery("create table orders (id integer not null primary key autoincrement, name text)")
                .executeUpdate();
        // create hibernate_sequence
        entityManager
                .createNativeQuery("create table hibernate_sequence (next_val integer)")
                .executeUpdate();
        // fill up hibernate_sequence
        entityManager
                .createNativeQuery("insert into hibernate_sequence (next_val) values (1)")
                .executeUpdate();
    }

    public void testMethod()    {

        entityManager.persist(createOrder("1"));
        entityManager.persist(createOrder("2"));
        entityManager.persist(createOrder("3"));
        entityManager.createQuery("from Order").getResultList();
        entityManager.persist(createOrder("4"));

        throw new RuntimeException("Managed");
    }

    private Order createOrder(String name)  {
        final Order order = new Order();
        order.setName(name);
        return order;
    }

}