Examples of javax.persistence.EntityManager.detach()

javax.persistence.EntityManager.detach()
Remove the given entity from the persistence context, causing a managed entity to become detached. Unflushed changes made to the entity if any (including removal of the entity), will not be synchronized to the database. Entities which previously referenced the detached entity will continue to reference it. @param entity @throws IllegalArgumentException if the instance is not anentity

      cq.orderBy(order);
    }


    List<EventSource> eventSources = em.createQuery(cq).getResultList();
    for (EventSource source : eventSources) {
      em.detach(source);
    }
    return eventSources;
  }


  public EventSource find(String uri) {

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    if (list != null) {
      if (list.size() == 0) {
        return null;
      } else if (list.size() == 1) {
        EventSource source = list.get(0);
        em.detach(source);
        return source;
      } else {
        throw new RuntimeException("One result was expected, got " + list.size());
      }
    }

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        assertTrue(data.size() > 0);
        
        // Cycle through all PCs, verifying detach state
        for (int i = 0; i < size; i++) {
            Object entity = data.get(i);
            em.detach(entity);
            for (int j = 0; j < size; j++ ) {
                if (j == i) {
                    // Base entity should always be detached
                    assertFalse(em.contains(entity));
                } else {

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  {
    EntityManager em = getPersistenceContext(false);
    //The detatched manager auto-detaches everything, so only
    //detach from a "real" entity manager
    if(em != detachedManager)
      em.detach(arg0);
  }


  public <T> T find(Class<T> arg0, Object arg1, Map<String, Object> arg2)
  {
    EntityManager em = getPersistenceContext(false);

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      separateTx.begin();
      UserAccount user = separateTxEm.find(UserAccount.class, userId);
      separateTxEm.flush();
      Assert.assertTrue("entity is part of separate em", separateTxEm.contains(user));
      separateTx.commit();
      separateTxEm.detach(user);
      Assert.assertFalse("entity is no longer part of separate em", separateTxEm.contains(user));
      Assert.assertFalse("entity is not part of main em", em.contains(user));
      user.setLastName("Hendrix");
      UserAccount mergedUser = repo.merge(user);
      em.flush();

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  public void detach(Object entity)
  {
    EntityManager em = getCurrent();
    
    if (em != null) {
      em.detach(entity);
      return;
    }
    
    em = createEntityManager();

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    }
    
    em = createEntityManager();
    
    try {
      em.detach(entity);
    } finally {
      freeEntityManager(em);
    }
  }

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      separateTx.begin();
      UserAccount user = separateTxEm.find(UserAccount.class, userId);
      separateTxEm.flush();
      Assert.assertTrue("entity is part of separate em", separateTxEm.contains(user));
      separateTx.commit();
      separateTxEm.detach(user);
      Assert.assertFalse("entity is no longer part of separate em", separateTxEm.contains(user));
      Assert.assertFalse("entity is not part of main em", em.contains(user));
      user.setLastName("Hendrix");
      UserAccount mergedUser = repo.merge(user);
      em.flush();

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