[hibernate-dev] Immutable entities

Hi there, I am trying to figure out what should happen if I modify an entity marked as @Immutable. Somehow I expected an exception to be raised, but nothing seem to happen. I wrote this test case (the Country entity is marked as @Immutable): public void testImmutableEntity() throws Exception { Session s = openSession(); Transaction tx = s.beginTransaction(); Country country = new Country(); country.setName("Germany"); s.persist(country); tx.commit(); s.close(); try { s = openSession(); tx = s.beginTransaction(); Country germany = (Country) s.get(Country.class, country.getId()); assertNotNull(germany); germany.setName("France"); s.save(germany); // s.delete(germany); tx.commit(); s.close(); fail(); } catch (Exception e) { log.debug("success"); } } The exception is never raised. The core documentation only says "Immutable classes may not be updated or deleted by the application". It does not say anything about what happens if one tries to do so. Should the above testcase work or not? Thanks, Hardy