java.lang.ClassCastException
I am writing a JUnit test to test the CMP CD EJB example project for JBoss 2.2.4. Everytime I run it I get the runtime exception “java.lang.ClassCastException” at the line “CDCollectionHome home = (CDCollectionHome)PortableRemoteObject.narrow (ref, CDCollectionHome.class);” I have tried to get around it but have not found a solution. Any ideas?
Roger
//--------------------------------- TestCD -----------------------------------------------------------------
package org.jboss.docs.cmp.cd;
import org.jboss.docs.cmp.cd.interfaces.CDCollectionHome;
import org.jboss.docs.cmp.cd.interfaces.CDCollection;
import org.jboss.docs.cmp.cd.interfaces.CD;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import java.util.Hashtable;
import java.util.Properties;
import java.io.FileInputStream;
import junit.framework.*;
public class TestCD extends TestCase {
public TestCD(String name) {
super(name);
}
protected void setUp() {
}
public static Test suite() {
return new TestSuite(TestCD.class);
}
public void testSingleQuery() {
String text= "Time further";
int theLen = 0;
try
{
// Get a naming context
InitialContext jndiContext = new InitialContext();
if (jndiContext == null)
{
Exception e1 = new Exception("jndiContext is null");
throw (e1);
}
// Get a reference to a CD Bean
Object ref = jndiContext.lookup("cd/CDCollection");
if (ref == null)
{
Exception e1 = new Exception("ref is null");
throw (e1);
}
System.out.println("The class of " + ref +
" is " + ref.getClass().getName());
// Get a reference from this to the Bean's Home interface
CDCollectionHome home = (CDCollectionHome)PortableRemoteObject.narrow (ref, CDCollectionHome.class);
//Object home = PortableRemoteObject.narrow(ref, CDCollectionHome.class);
System.out.println("The class of " + home +
" is " + home.getClass().getName());
/**************
CDCollection cdCollection = home.create();
if (cdCollection == null)
{
Exception e1 = new Exception("cdCollection is null");
throw (e1);
}
CD[] cds = cdCollection.lookupInAnyField(text);
theLen = cds.length;
*******/
}
catch(Exception e)
{
System.out.println("home NULL?... "+e.toString()+ "\r");
e.printStackTrace();
}
//assertTrue(theLen == 1);
assertEquals(1,theLen);
/************
for (int i = 0; i < cds.length; i++)
{
System.out.println (cds.getId() + "\t" + cds.getTitle() + "\t" +
cds.getArtist() + "\t" + cds.getType());
}
// forced failure result == 5
assertTrue(result == 6);
*************/
}
}
