[appengine-java] Cursor support with JPA

[fvisticot]

I do not see any documentation regarding cursor support with JPA.

Is the following code the correct way to use cursors ?
In this sample code, i will retrieve users from 300 to 320
(query.setMaxResults(20);       query.setFirstResult(300);)

The test is OK with the Local Eclipse GAE plugin

@Test
        public void getUsersCursorTest() {
                EntityManagerFactory emf = null;
                EntityManager em = null;
                emf = AppEntityManagerFactory.get();
                try {
                        em = emf.createEntityManager();
                        Query query = em.createNamedQuery("User.findAll");
                        query.setMaxResults(20);
                        query.setFirstResult(300);
                        List<User> users = query.getResultList();
                        _logger.info("UsersWithMax: " + users.size());
                        for (User user: users) {
                                _logger.info("User: " + user);
                        }
                } finally {
                        if (em != null)
                                em.close();
                }
        }

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