Hello,

I'm stuck with the following problem and am starting to doubt my understanding of bijection and the component model.

For some reason I am unable to access a stateful session bean AT STARTUP from within component.

Here is the scenario:

At the startup of the (web-)session I want to store an ActorConfig object in the session scope. In order to create the object, I need to call a method at an stateful session bean. This returns a null-pointer exception.

Is there a conceptual misunderstanding of mine?

Many thanks for help,

Jan

As Code:

@Scope(ScopeType.SESSION)
@Startup(depends = { "clientManager", "clientList" })
@Name("internetInit")
public class InternetInitialization implements Serializable {

     @Out(scope = ScopeType.SESSION, value = ActorConfig.CONTEXT_ID, required = true)
     private ActorConfig                         actorConfig;

     @In(create = true)
     private ClientManagerLocal     clientManager;

     @Create
     public void initInternet() {
          Client client = clientManager.getClientByClientcode("SFDE");
          actorConfig = new ActorConfig(client);
     }

     
...

@Stateful
@Name("clientManager")
public class ClientManager implements ClientManagerLocal {

     @In(create = true)
     private ClientList     clientList;

     public Client getClientByClientcode(String clientcode) {
[line 36]     return clientList.getClientByClientcode(clientcode); 
     }

...

@Name("clientList")
public class ClientList extends EntityQuery<Client> {

And here is the exception:

09:32:17,154 ERROR [[/myProject]] Session event listener threw exception
org.jboss.seam.InstantiationException: Could not instantiate Seam component: internetInit
     at org.jboss.seam.Component.newInstance(Component.java:1986)
     at org.jboss.seam.contexts.Contexts.startup(Contexts.java:304)
     at org.jboss.seam.contexts.Contexts.startup(Contexts.java:278)
     at org.jboss.seam.contexts.Lifecycle.beginSession(Lifecycle.java:191)
...
Caused by: javax.ejb.EJBException: java.lang.NullPointerException
     at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:63)
     at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
     at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
     at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
...
Caused by: java.lang.NullPointerException
     at com.myProject.client.ClientManager.getClientByClientcode(ClientManager.java:36)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)