Calling Seam Components (Stateless EJB) outside Seam app. Po

[msteiner]

I have 2 Seam appllications (ears). When I call from one app, EJB method from another app I get NPE in Component class (getApplicationContext() returns null):

 public static Component forName(String name)
 {
 return (Component) Contexts.getApplicationContext().get( name + ".component" );
 }

This method is called by SeamInterceptor (PostConstruct method -> getSeamComponent).

When I first call this EJB in normal Seam way ( with @In and from its own application ) and then call it from other ear with @EJB this sometimes works. In other words: if method PostConstruct from SeamInterceptor is called outside seam application (with @EJB) then NPE is throwed.

It is legal to call EJB's annotated with @name outside Seam app ?

How to deal with such scenario:
I have 2 Seam applications (separeted ears) event in one application should begin jbpm process in second application and pass paramers to its business context. Is this possible ? How ?

[pmuir]

I'm not sure but I'm pretty sure that's not the way Seam is intended to be used. I'm not sure about it from an architectural point of view either - surely you add all sorts of nasty dependencies to your app.

How about using JMS to communicate between the two applications?

[msteiner]

JMS is good idea. Which Seam components I can safely use in MDB ? Will I have access to JBPM process definitions from MDB ?

[msteiner]

With MDB it doesnt work either. I have MDB (with @name annotation). When I send JMS Message I get NPE:

Caused by: java.lang.NullPointerException
 at org.jboss.seam.Component.forName(Component.java:1298)
 at org.jboss.seam.ejb.SeamInterceptor.getSeamComponent(SeamInterceptor.java:166)
 at org.jboss.seam.ejb.SeamInterceptor.postConstruct(SeamInterceptor.java:72)
 at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.ejb3.interceptor.LifecycleInvocationContextImpl.proceed(LifecycleInvocationContextImpl.java:131)
 at org.jboss.ejb3.interceptor.LifecycleInterceptorHandler.postConstruct(LifecycleInterceptorHandler.java:105)
 ... 15 more

Seam version from CVS.

[gavin.king]

This looks like a bug in the CVS version of Seam:

http://jira.jboss.com/jira/browse/JBSEAM-338