[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5703) EJB3PostLoadEventListener, as created by EventListenerConfigurator, throws NullPointerException.

[Eduardo Born (JIRA)]

EJB3PostLoadEventListener, as created by EventListenerConfigurator, throws NullPointerException.
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                 Key: HHH-5703
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5703
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
    Affects Versions: 3.5.6
            Reporter: Eduardo Born


EJB3PostLoadEventListener is created by EventListenerConfigurator with its default constructor:

	listenerConfig.setPostLoadEventListeners(
		new PostLoadEventListener[] { new EJB3PostLoadEventListener(), new DefaultPostLoadEventListener() }
	);

The problem is that it has a callbackHandler field called which remains null, and there is no check in the postLoad method before invoking callbackHandler.postLoad( entity );. This causes a NullPointerException to be thrown there in a few situations.

The fix is simple. H+In the EJB3PostLoadEventListener's postLoad() method, replace:

	public void onPostLoad(PostLoadEvent event) {
		Object entity = event.getEntity();
		callbackHandler.postLoad( entity );
	}
by:

	public void onPostLoad(PostLoadEvent event) {
                if (callbackHandler == null) return;
		Object entity = event.getEntity();
		callbackHandler.postLoad( entity );
	}



This would prevent the NullPointerException to be thrown when there is no callbackHandler.


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