Hi,

I think, it's not possible with the Observes annotation but you can use MessageBus subscribe/unsubscribe instead. Look at the JBoss Errai reference (e.g. 2.2.4) here http://docs.jboss.org/errai/2.1.1.Final/errai/reference/html_single/#sid-5931280

Regards,

Ivo

That's not exactly true. It is possible to unsubcribe an observer by destroying the bean of which it is a member.

For instance: if you have a dependent bean called ObserveBean

@Dependent
public class ObserverBean {
   public void observes(@Observes Foo foo) { 
  }
}

You then create this bean dynamically from another bean:

ObserverBean bean = beanManager.lookupBean(ObserverBean.class).newInstance();

The observer is now listening.

beanManager.destroyBean(bean);

Now it is not.