[jboss-user] [EJB 3.0] - Trouble accessing local EJB from webapp

[mjremijan]

It's been a while since I've worked in the EJB world (been doing a lot of just webapp development lately) so please bear with me.

I am using jboss-4.2.1.GA and java version "1.5.0_11"

I am working on a simple EJB project.  I have 1 local session bean an 1 entity bean which is managed by the Java Persistence API.  I pack this all up into an ear file and deploy it to jboss.  I can see in the JNDIList the ejb is deployed:


  | +- oak.oths.domain (class: org.jnp.interfaces.NamingContext)
  |   |   +- AlumniEjb (class: org.jnp.interfaces.NamingContext)
  |   |   |   +- local (proxy: $Proxy172 implements interface org.oak.oths.domain.alumni.AlumniLocal,interface org.jboss.ejb3.JBossProxy,interface javax.ejb.EJBLocalObject)
  | 

Now I have a webapp.  This webapp is deployed as a seperate war file.  Inside the webapp I do a JNDI lookup, find the object, but get a java.lang.ClassCastException when I try to typecast or PortableRemoteObject.narrow() it to the EJB's local interface, AlumniLocal.


  | // This causes a ClassCastException!
  | AlumniLocal local 
  |   = (AlumniLocal)ctx.lookup("oak.oths.domain/AlumniEjb/local");
  | 

I can loop over the interfaces which the class implements and it does indeed implement the AdminLocal interface so my question is why am I getting this ClassCastException?  If the EJB is in an EAR file and the webapp is deployed as a seperate WAR file can the two not use Local interfaces?



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