@Test
public void testSaveLoad() {
Long id = null;
Session session = SessionUtil.getSession();
Transaction tx = session.beginTransaction();
SimpleObject obj = new SimpleObject();
obj.setKey("sl");
obj.setValue(10L);
session.save(obj);
assertNotNull(obj.getId());
id = obj.getId();
tx.commit();
session.close();
session = SessionUtil.getSession();
tx = session.beginTransaction();
SimpleObject o2 = (SimpleObject) session.load(SimpleObject.class, id);
assertEquals(o2.getKey(), "sl");
assertNotNull(o2.getValue());
assertEquals(o2.getValue().longValue(), 10L);
SimpleObject o3 = (SimpleObject) session.load(SimpleObject.class, id);
// Since o2 and o3 were loaded in the same session, they are not only
// equivalent - as shown by equals() - but equal, as shown by ==
// since obj was loaded from a different session, it is equivalent but not ==
assertEquals(o2, o3);
assertEquals(obj, o2);
assertTrue(o2 == o3);
assertFalse(obj == o2);
tx.commit();
session.close();
}
@Test
public void testSaveOrUpdateEntity() {
Long id;
Session session = SessionUtil.getSession();
Transaction tx = session.beginTransaction();
SimpleObject obj = new SimpleObject();
obj.setKey("osas");
obj.setValue(10L);
session.save(obj);
id = obj.getId();
tx.commit();
session.close();
session = SessionUtil.getSession();
tx = session.beginTransaction();
obj.setValue(2L);
session.saveOrUpdate(obj);
tx.commit();
session.close();
// saveOrUpdate will update a row in the database
// if one matches. This is the correct behavior.
assertEquals(id, obj.getId());
}
@Test
public void testSavingEntitiesTwice() {
Long id;
Session session = SessionUtil.getSession();
Transaction tx = session.beginTransaction();
SimpleObject obj = new SimpleObject();
obj.setKey("osas");
obj.setValue(10L);
session.save(obj);
id = obj.getId();
tx.commit();
session.close();
session = SessionUtil.getSession();
tx = session.beginTransaction();
obj.setValue(2L);
session.save(obj);
tx.commit();
session.close();
// Note that save() creates a new row in the database.
// This is wrong behavior. Do not do this.
assertNotEquals(id, obj.getId());
}