[jboss-user] [JBoss Seam] - Re: @Service / @Management bean injection

[rhomber]

Hey,

  I found a feature request that suggests there is a way of doing it: http://jira.jboss.org/jira/browse/JBSEAM-1498

  I am not stuck with the fact that I cannot inject a stateless bean either. Perhaps my understanding of how Seam works is wrong.

I have a stateless bean:

@Name("utibaServiceGajMediator")
  | @Stateless
  | @Scope(ScopeType.APPLICATION)
  | @AutoCreate
  | public class GAJServiceMediatorBean implements GAJServiceMediator {
  | 
  |     public int nextTransID() throws Exception {
  |         return 1234;
  |     }
  |     
  | }

Implementing interface:

@Local
  | public interface GAJServiceMediator {
  | 
  |     public int nextTransID() throws Exception;
  | 
  | }

And then used by this class:

@Name("utibaTester")
  | @AutoCreate
  | public class UtibaTest {
  | 
  |     @In GAJServiceMediator gajServiceMediator;
  |     @In MyBean myBean;
  | 
  |     public void takeMagicFlight() {
  |         try {
  |             myBean.setText("TransID = " + gajServiceMediator.nextTransID());
  |         } catch (Exception e) {
  |             myBean.setText("Failed");
  |         }
  |     }
  | 
  | }

Then elsewhere I have a commandLink:


  | <h:commandButton type="submit" value="Fly Away" action="#{utibaTester.takeMagicFlight}"/>
  | 

And get the following error message:

Caused by: javax.faces.el.EvaluationException: /ajax.xhtml @22,102 action="#{utibaTester.takeMagicFlight}": org.jboss.seam.RequiredException: In attribute requires non-null value: utibaTester.gajServiceMediator
  |         at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
  |         at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
  |         ... 43 more
  | Caused by: org.jboss.seam.RequiredException: In attribute requires non-null value: utibaTester.gajServiceMediator

Well that is the useful portion anyway. As far as I can tell I have followed the documentation, perhaps my understanding of how all this should work together is wrong? Should I be able to have one stateless bean injected as a resource to another bean?

Any help would be appreciated.

Cheers,

David

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