Object is not of remote type error in GlassFish v3

[Stu Quinn]

Good day,

After using GlassFish v2 and JEE 5 I have decided to give GlassFish V3 and JEE 6 a go. I am using Eclipse V3.4 and have configured the GlassFish v3 JEE 6 Server Adapter. My server and client side apps are referencing the new libraries and I am ready to go. I have deployed my EJB 3 application successfully to the server, however I will be a son-of-a-gun if my client is having problems connecting via JNDI. The stacktrace indicates I am trying to grab an object that is not Remote, but that seems rather odd to me as this has not changed and it is in fact my @Remote interface to my session bean.

Quick view of the implementation code:

 
@Stateless(name = "UB3Session", mappedName = "ejb/UB3Session")
public class UB3Session implements IUB3Session {

Now the remote interface:

 
@Remote
public interface IUB3Session {

Now the client (this is JUnit)

 
	IUB3Session svc;

	protected void setUp() throws Exception {
		super.setUp();		
		InitialContext ctx = new InitialContext();
		svc = (IUB3Session) ctx.lookup("ejb/UB3Session");
	}

And here is the error I get when attempting to run the JUnit (again, this same code worked find under GlassFish v2)

javax.naming.CommunicationException: Can't find SerialContextProvider [Root exception is java.lang.ClassCastException]
at com.sun.enterprise.naming.SerialContext.getProvider(SerialContext.java:164)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:409)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at com.quintessential.ub3.bam.IUB3Session_Physical_MeterReadPostingTest.setUp(IUB3Session_Physical_MeterReadPostingTest.java:46)
at junit.framework.TestCase.runBare(TestCase.java:128)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:120)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.ClassCastException
at com.sun.corba.ee.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:258)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)
at com.sun.enterprise.naming.SerialContext.narrowProvider(SerialContext.java:136)
at com.sun.enterprise.naming.SerialContext.getCachedProvider(SerialContext.java:259)
at com.sun.enterprise.naming.SerialContext.getRemoteProvider(SerialContext.java:204)
at com.sun.enterprise.naming.SerialContext.getProvider(SerialContext.java:159)
... 14 more
Caused by: java.lang.ClassCastException: Object is not of remote type com.sun.enterprise.naming.SerialContextProvider
at com.sun.corba.ee.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:250)
... 19 more


Thanks for any clues here,
Stu

[Prasad Kumbhare]

If I understood your client correctly, you are trying to access EJB via JNDI looktup thorough JUnit test case. But JUnit runs out of container. Are you using Cactus or something or is this plain out of container JUnit client ?
If this is out of container JUnit you will not be able to access EJB vis JNDI lookup. No Initial context would be available in that case.

[Stu Quinn]

Prasad,

I regularly test this way from JUnit running in Eclipse. Below are samples that are working just fine in JBOSS and GlassFish V2. The problem seems to be when attempting to narrow the remote object, but I am away from the laptop where I am having the problem at the moment. I need to see what it is trying to return.

Samples that work:

	@Before
	public void setUp() throws Exception {
		try {

			Properties properties = new Properties();

			// JBOSS 
			properties.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
			properties.put("java.naming.factory.url.pkgs","=org.jboss.naming:org.jnp.interfaces");
			properties.put("java.naming.provider.url", "localhost:1099");			
			
			// GLASSFISH (V2)
//			properties.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY,"com.sun.enterprise.naming.SerialInitContextFactory");
//			properties.put(javax.naming.Context.PROVIDER_URL, "iiop://localhost:3920/");
			
			Context context = new InitialContext(properties);
			System.out.println("Looking up the remote object " + Demo2Session.JNDIName);
			svc = (Demo2SessionRemote) context.lookup(Demo2Session.JNDIName);
		} catch (NamingException e) {		
			e.printStackTrace();
		}
		
	}
    

Thanks,
Stu

[Tony Paul]

Hi Stu-
I know its been a old post.
But just wanted to check if you were able to find a solution for the issue?

Because I just migrated application from Glassfish 2.1 to Glassfish 3.1.1 and am facing the exact same issue where the remote ejb invocation fails with the exception:

Caused by: java.lang.ClassCastException
at com.sun.corba.ee.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:258)
at javax.rmi.PortableRemoteObject.narrow(Unknown Source)
at com.sun.enterprise.naming.SerialContext.narrowProvider(SerialContext.java:136)
at com.sun.enterprise.naming.SerialContext.getRemoteProvider(SerialContext.java:220)
at com.sun.enterprise.naming.SerialContext.getProvider(SerialContext.java:159)
... 17 more
Caused by: java.lang.ClassCastException: Object is not of remote type com.sun.enterprise.naming.SerialContextProvider
at com.sun.corba.ee.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:250)
... 21 more

Any help on this is appreciated