FacesContext.getCurrentInstance() returns null in @Observer

[shin0135]

Hi,

I have an @Observer method in an application scoped POJO bean and another conversation scoped SFSB like below:

mySFSB:

@Stateful
@Name("mySFSB")
@Scope(ScopeType.CONVERSATION)
public class MyBean implements MyBeanInterface {
...

  public void methodA() {
    
    doSomeWork();

    Events.instance().raiseAsynchronousEvent("eventToObserve", param1, param2);

  }
...
}

Another component listenerPojo:

@Name("listenerPojo")
@Scope(ScopeType.Application)
public class MyListenerPojo {
...

  @Observer("eventToObserve")
  public void process(String param1, String param2) {

    FacesMessage msg = someMessage;   
    doSomethingWithParams(param1, param2);

    FacesContext fc = FacesContext.getCurrentInstance();

    fc.addMessage(null, msg);

  }

...
}

The problem I'm facing here is that FacesContext.getCurrentInstance() returns null. Why is that? Is it because FacesContext is tied to the methodA request and the asynchronous method is running in a new thread? So, how can I access FacesContext?

I'm just trying to implement something like what Leo had as an example in this post.

Can someone please explain me?

Thanks for your help in advance!

-James

[lvdberg]

Hi,

The facescontext is available when you make a request and not in Asynchronous methods. The trick I use is to create the Facesmessage within the asynchronous method and save it in an application scoped ocmponent unitil the user makes a request. At that moment the facescontext is available, you retrieve all messages and add them to the FacesContext.

Leo

[shin0135]

Yes, you are right, Leo. Looking at your post again, I've noticed that FacesContext is not being used in the asynchronous method. Thanks for your clarification.