public void testCreateAssassinWithGun() {
EntityManager em = createEntityManager();
try {
beginTransaction(em);
Assassin assassin = new Assassin();
assassin.setName("Assassin1");
Gun gun = new Gun();
gun.setCaliber(new Integer(50));
gun.setDescription("Sniper rifle");
gun.setModel("9-112");
assassin.setWeapon(gun);
em.persist(assassin);
assassinId = assassin.getId();
gunSerialNumber = gun.getSerialNumber();
commitTransaction(em);
} catch (Exception exception) {
exception.printStackTrace();
fail("Error persisting new assassin: " + exception.getMessage());
} finally {
closeEntityManager(em);
}
}
// Tested for an Assassin and a SpecialAssasin
protected void optimisticLockTestOnAssassin(Integer id) {
// Cannot create parallel entity managers in the server.
if (!isOnServer()) {
EntityManager em1 = createEntityManager();
EntityManager em2 = createEntityManager();
em1.getTransaction().begin();
em2.getTransaction().begin();
RuntimeException caughtException = null;
try {
Assassin assassin1 = em1.find(Assassin.class, id);
Assassin assassin2 = em2.find(Assassin.class, id);
assassin1.setName("Geezer");
assassin2.setName("Guyzer");
em1.getTransaction().commit();
em2.getTransaction().commit();
em1.close();
em2.close();
} catch (RuntimeException e) {
if (em1.getTransaction().isActive()) {
em1.getTransaction().rollback();
}
if (em2.getTransaction().isActive()) {
em2.getTransaction().rollback();
}
if (e.getCause() instanceof javax.persistence.OptimisticLockException) {
caughtException = e;
} else {
throw e;
}
} finally {
em1.close();
em2.close();
}
if (caughtException == null) {
fail("Optimistic lock exception was not thrown.");
}
}
}
public void testAssassinOptimisticLockingUsingEntityManagerAPI() {
// Cannot create parallel entity managers in the server.
if (!isOnServer()) {
EntityManager em = createEntityManager();
beginTransaction(em);
Assassin assassin = null;
try {
assassin = new Assassin();
assassin.setName("OptLockAssassin");
em.persist(assassin);
commitTransaction(em);
} catch (RuntimeException ex) {
if (isTransactionActive(em)) {
rollbackTransaction(em);
}
closeEntityManager(em);
throw ex;
}
EntityManager em2 = createEntityManager();
Exception optimisticLockException = null;
beginTransaction(em);
try {
assassin = em.find(Assassin.class, assassin.getId());
em.lock(assassin, LockModeType.WRITE);
beginTransaction(em2);
try {
Assassin assassin2 = em2.find(Assassin.class, assassin.getId());
assassin2.setName("OptLockAssassin2");
commitTransaction(em2);
em2.close();
} catch (RuntimeException ex) {
if (isTransactionActive(em2)) {
rollbackTransaction(em2);
}
closeEntityManager(em2);
throw ex;
}
try {
em.flush();
} catch (PersistenceException exception) {
if (exception instanceof OptimisticLockException) {
optimisticLockException = exception;
} else {
throw exception;
}
}
rollbackTransaction(em);
} catch (RuntimeException ex) {
if (isTransactionActive(em)) {
rollbackTransaction(em);
}
closeEntityManager(em);
throw ex;
}
try {
beginTransaction(em);
assassin = em.find(Assassin.class, assassin.getId());
em.remove(assassin);
commitTransaction(em);
} catch (RuntimeException ex) {
if (isTransactionActive(em)) {
rollbackTransaction(em);
}
closeEntityManager(em);
throw ex;
}
assertFalse(
"Proper exception not thrown when EntityManager.lock(object, OPTIMISTIC) is used.",
optimisticLockException == null);
}
}