@SuppressWarnings({"unchecked"})
private void cleanup() {
Session s = openSession();
s.beginTransaction();
s.createQuery("delete from SubItem").executeUpdate();
for (Hoarder hoarder : (List<Hoarder>) s.createQuery("from Hoarder").list()) {
hoarder.getItems().clear();
s.delete(hoarder);
}
for (Category category : (List<Category>) s.createQuery("from Category").list()) {
if (category.getExampleItem() != null) {
category.setExampleItem(null);
s.delete(category);
}
}
for (Item item : (List<Item>) s.createQuery("from Item").list()) {
item.setCategory(null);
s.delete(item);
}
s.createQuery("delete from Item").executeUpdate();
s.getTransaction().commit();
s.close();
}
@SuppressWarnings({"unchecked"})
private void cleanup() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
for (Hoarder hoarder : (List<Hoarder>) em.createQuery("from Hoarder").getResultList()) {
hoarder.getItems().clear();
em.remove(hoarder);
}
for (Category category : (List<Category>) em.createQuery("from Category").getResultList()) {
if (category.getExampleItem() != null) {
category.setExampleItem(null);
em.remove(category);
}
}
for (Item item : (List<Item>) em.createQuery("from Item").getResultList()) {
item.setCategory(null);
em.remove(item);
}
em.createQuery("delete from Item").executeUpdate();
em.getTransaction().commit();
em.close();
}
@Test
public void testMergeMultipleEntityCopiesAllowed() {
Item item1 = new Item();
item1.setName("item1");
Hoarder hoarder = new Hoarder();
hoarder.setName("joe");
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist(item1);
em.persist(hoarder);
em.getTransaction().commit();
em.close();
// Get another representation of the same Item from a different EntityManager.
em = getOrCreateEntityManager();
Item item1_1 = em.find(Item.class, item1.getId());
em.close();
// item1_1 and item1_2 are unmodified representations of the same persistent entity.
assertFalse(item1 == item1_1);
assertTrue(item1.equals(item1_1));
// Update hoarder (detached) to references both representations.
hoarder.getItems().add(item1);
hoarder.setFavoriteItem(item1_1);
em = getOrCreateEntityManager();
em.getTransaction().begin();
// the merge should succeed because it does not have Category copies.
// (CustomEntityCopyObserver does not allow Category copies; it does allow Item copies)
hoarder = em.merge(hoarder);
assertEquals(1, hoarder.getItems().size());
assertSame(hoarder.getFavoriteItem(), hoarder.getItems().iterator().next());
assertEquals(item1.getId(), hoarder.getFavoriteItem().getId());
assertEquals(item1.getCategory(), hoarder.getFavoriteItem().getCategory());
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
hoarder = em.find(Hoarder.class, hoarder.getId());
assertEquals(1, hoarder.getItems().size());
assertSame(hoarder.getFavoriteItem(), hoarder.getItems().iterator().next());
assertEquals(item1.getId(), hoarder.getFavoriteItem().getId());
assertEquals(item1.getCategory(), hoarder.getFavoriteItem().getCategory());
em.getTransaction().commit();
em.close();
cleanup();
}
@Test
public void testCascadeFromDetachedToGT2DirtyRepresentations() {
Item item1 = new Item();
item1.setName("item1");
Category category1 = new Category();
category1.setName("category1");
item1.setCategory(category1);
Hoarder hoarder = new Hoarder();
hoarder.setName("joe");
Session s = openSession();
Transaction tx = session.beginTransaction();
s.persist(item1);
s.persist(hoarder);
tx.commit();
s.close();
// Get another representation of the same Item from a different session.
s = openSession();
Item item1_1 = (Item) s.get(Item.class, item1.getId());
s.close();
// item1 and item1_1 are unmodified representations of the same persistent entity.
assertFalse(item1 == item1_1);
assertTrue(item1.equals(item1_1));
// Get another representation of the same Item from a different session.
s = openSession();
Item item1_2 = (Item) s.get(Item.class, item1.getId());
s.close();
// item1_1 and item1_2 are unmodified representations of the same persistent entity.
assertFalse(item1 == item1_2);
assertTrue(item1.equals(item1_2));
item1_1.setName("item1_1");
item1_2.setName("item1_2");
// Update hoarder (detached) to references both representations.
item1.getCategory().setExampleItem(item1_2);
hoarder.getItems().add(item1);
hoarder.setFavoriteItem(item1_1);
hoarder.getFavoriteItem().getCategory();
s = openSession();
tx = s.beginTransaction();
hoarder = (Hoarder) s.merge(hoarder);
assertEquals(1, hoarder.getItems().size());
assertSame(hoarder.getFavoriteItem(), hoarder.getItems().iterator().next());
assertSame(hoarder.getFavoriteItem(), hoarder.getFavoriteItem().getCategory().getExampleItem());
assertEquals(item1.getId(), hoarder.getFavoriteItem().getId());
assertEquals(item1.getCategory(), hoarder.getFavoriteItem().getCategory());
assertEquals(item1.getName(), hoarder.getFavoriteItem().getName());
tx.commit();
s.close();
s = openSession();
tx = s.beginTransaction();
hoarder = (Hoarder) s.merge(hoarder);
assertEquals(1, hoarder.getItems().size());
assertSame(hoarder.getFavoriteItem(), hoarder.getItems().iterator().next());
assertSame(hoarder.getFavoriteItem(), hoarder.getFavoriteItem().getCategory().getExampleItem());
assertEquals(item1.getId(), hoarder.getFavoriteItem().getId());
assertEquals(item1.getCategory(), hoarder.getFavoriteItem().getCategory());
tx.commit();
s.close();
cleanup();
}
