[wildfly-dev] Seeing NPE in org.jboss.as.weld.ejb.StatefulSessionObjectReferenceImpl.isRemoved() during NoSQL testing, how to fix?

[Scott Marlow]

On 07/07/2016 01:13 PM, James Perkins wrote:
> I think you need to look at why the cache is null. In
> the org.jboss.as.ejb3.component.stateful.StatefulSessionComponent it's
> only null if the start of the component hasn't been invoked or the done
> method was invoked.

 From the call stack, we must of called "done" already, as the cache 
would of been used previously during the test (implying that it was 
non-null previously).


[1] 
https://gist.github.com/scottmarlow/9f9822e9d4609850d49099c3c5234ed9#file-gistfile1-txt-L41
>
> On Thu, Jul 7, 2016 at 9:23 AM, Scott Marlow <smarlow at redhat.com
> <mailto:smarlow at redhat.com>> wrote:
>
>     Often when running a NoSQL unit test, I'm seeing a NPE in
>     org.jboss.as.weld.ejb.StatefulSessionObjectReferenceImpl.isRemoved().  I
>     understand that we should never allow a NullPointerException to be
>     thrown, however, does anyone know what the correct course of action
>     should be?  Ensuring that ejbComponent.getCache() never returns null
>     could be one approach.  Or perhaps callers to ejbComponent.getCache()
>     should check for null being returned.  Could there be a missing
>     application dependency on the cache?
>
>     StatefulSessionObjectReferenceImpl currently contains:
>
>     @Override
>     public boolean isRemoved() {
>        if (!removed) {
>          return !ejbComponent.getCache().contains(id);
>        }
>        return true;
>     }
>
>     Thanks,
>     Scott
>
>     [1] https://gist.github.com/scottmarlow/9f9822e9d4609850d49099c3c5234ed9
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>
>
> --
> James R. Perkins
> JBoss by Red Hat