javax.naming.NotContextException

[psyllogism]

Help me please! I am getting the following exception when I try to connect my client application to my server:

javax.naming.NotContextException: Reference Class Name: java.lang.Object
Type: FACTORY
Content: MetaAgentImplStatefulProxyFactory
is not a Context
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:692)
 ...

It is happening when I look up my EJB:

Object ref = jndiContext.lookup("MetaAgentImpl/remote");

My jboss.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS//EN" "http://www.jboss.org/j2ee/dtd/jboss.dtd">

<jboss>

 <enterprise-beans>
 <session>
 <ejb-name>MetaAgentImpl</ejb-name>
 <jndi-name>MetaAgentImpl</jndi-name>
 </session>
 </enterprise-beans>

 <resource-managers>
 </resource-managers>
</jboss>

What is going on?? Thanks in advance!

[jaikiran]

<jndi-name>MetaAgentImpl</jndi-name>

So your lookup should be:

Object ref = jndiContext.lookup("MetaAgentImpl");

[psyllogism]

Okay. Then on this line:

m_metaAgent = (MetaAgent) PortableRemoteObject.narrow(ref, MetaAgent.class);

I get the exception:

java.lang.ClassCastException
 at com.sun.corba.se.impl.javax.rmi.PortableRemoteObject.narrow(Unknown Source)
 at javax.rmi.PortableRemoteObject.narrow(Unknown Source)
 ...

The jndiContext.lookup(...) method returned a "MetaAgentImplStatefulProxyFactory" object, which isn't anything in my project!

So I still need help. Thanks.

[jaikiran]

Which version of EJB are you using? Is it EJB2 or EJB3. Since you posted this in EJB3 forum, i guessed it was EJB3, but i am not sure going by your question.

Also, could you post the contents of your ejb-jar.xml (if you have one) and the code where you are doing this lookup and narrow

[psyllogism]

Yes, I am using EJB 3.0. I currently do not have an ejb-jar.xml file. I have not developed with EJBs before but I thought that EJB 3.0 does not need one?

The lookup code:

// Lookup the meta-agent
Properties p = new Properties();
p.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
p.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
p.put(Context.PROVIDER_URL, "jnp://" + m_hostName + ":" + m_serverPortNumber);
Context jndiContext = new InitialContext(p);

Object ref = jndiContext.lookup("MetaAgentImpl");
m_metaAgent = (MetaAgent) PortableRemoteObject.narrow(ref, MetaAgent.class);

The MetaAgent interface:

@Remote
public interface MetaAgent {
...
}

The MetaAgent implementation:

@Stateful
public class MetaAgentImpl
 extends AbstractSessionAgent implements MetaAgent,
 Serializable {
...
}

Thanks for looking!

[jaikiran]

Yes, I am using EJB 3.0. I currently do not have an ejb-jar.xml file. I have not developed with EJBs before but I thought that EJB 3.0 does not need one?

Yes, that's right. I just wanted to confirm you were not using one.

m_metaAgent = (MetaAgent) PortableRemoteObject.narrow(ref, MetaAgent.class);

In EJB3, you no longer need the PortableRemoteObject.narrow. You can directly cast the returned object to the remote interface:

MetaAgent metaAgent = (MetaAgent) jndiContext.lookup("MetaAgentImpl");

[psyllogism]

I solved it!

I needed to add:

jboss-ejb3-client.jar
jboss-aspect-jdk50-client.jar
jboss-aop-jdk50-client.jar

to my build path.

Now I get to move on to my next error(s), which does not seem to be JBoss/EJB3 related.

Thanks for being patient with me!