ClassCastException while outside IDE, works fine in IDE.

[jcowgar]

I use Eclipse, have developed about 15 CMP Beans and Session beans to go along, now I am trying to use my client application that accesses these beans outside of the IDE, however whenever I keep getting ClassCastException and cannot figure out why.

The code that it's occuring in is code in the XDoclet Utility class, here it is (however, this is just a sample, it happens on all beans in the same place, this is just one):

cachedRemoteHome = (ejbs.interfaces.ClaimEntityHome) PortableRemoteObject.narrow(objRef, ejbs.interfaces.ClaimEntityHome.class);

The weird thing is that it is working fantastic inside my IDE. Outside the IDE is the only time I am getting this message error.

Thank you,

Jeremy Cowgar
[e-mail]

[prabhakar]

Can you post the stack trace?

-prabhakar

[jcowgar]

java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java
:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at com.eldoserv.ejbs.interfaces.PatientSessionUtil.getHome(PatientSessionUtil.java:34)
at com.eldoserv.knopro.eclipse.views.PatientSearchResultsView.search(PatientSearchResultsVie
w.java:506)
at com.eldoserv.knopro.eclipse.views.PatientSearchView$1.widgetSelected(PatientSearchView.ja
va:116)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:87)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:833)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1622)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1368)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1420)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:1403)
at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:775)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:462)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.eclipse.core.launcher.Main.basicRun(Main.java:247)
at org.eclipse.core.launcher.Main.run(Main.java:703)
at org.eclipse.core.launcher.Main.main(Main.java:539)



Sorry. Thanks for looking at the problem.

Jeremy Cowgar
[e-mail]

[jcowgar]

That was kinda silly. I have quite a few beans and when I read my original message, I saw that I was quering the ClaimEntity bean, not the Provider or Patient bean that I gave the stack trace for.

Here is the stack trace that the code in the first message creates.

java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java
:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at com.eldoserv.ejbs.interfaces.ClaimSessionUtil.getHome(ClaimSessionUtil.java:34)
at com.eldoserv.knopro.eclipse.views.ClaimSearchResultsView.search(ClaimSearchResultsView.ja
va:409)
at com.eldoserv.knopro.eclipse.views.ClaimSearchView$1.widgetSelected(ClaimSearchView.java:1
01)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:87)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:833)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1622)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1368)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1420)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:1403)
at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:775)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:462)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.eclipse.core.launcher.Main.basicRun(Main.java:247)
at org.eclipse.core.launcher.Main.run(Main.java:703)
at org.eclipse.core.launcher.Main.main(Main.java:539)

Jeremy Cowgar
[e-mail]

[jcowgar]

I'm sorry, I need to stop posting as quick. That stack trace is not right either, wrong example again, but here is the code that created the above error message, ClaimSessionUtil.java, Lines: 28-38

public static com.eldoserv.ejbs.interfaces.ClaimSessionHome getHome() throws NamingException
{
// Obtain initial context
InitialContext initialContext = new InitialContext();
try {
java.lang.Object objRef = initialContext.lookup(com.eldoserv.ejbs.interfaces.ClaimSessionHome.JNDI_NAME);
return (com.eldoserv.ejbs.interfaces.ClaimSessionHome) PortableRemoteObject.narrow(objRef, com.eldoserv.ejbs.interfaces.ClaimSessionHome.class);
} finally {
initialContext.close();
}
}


Jeremy Cowgar
[e-mail]

[jcowgar]

Oh, in case you didn't see, the whole ClaimSessionUtil.java file is attached.

Jeremy

[prabhakar]

When you use the client outside eclipse, are you adding the jars in $jboss/client/lib to your classpath.

-prabhakar

[jcowgar]

Yes. I have no problems with finding classes.

Jeremy Cowgar
[e-mail]

[prabhakar]

Check out this thread:
http://jboss.org/forums/thread.jsp?forum=47&thread=23141&message=3748393&q=com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow#3748393

-prabhakar

[jcowgar]

Yeah, I saw that one before. I have never had anything but 3.0.3 on my system, so that one does not apply :(

The thing that is strange is that it works great in the IDE and does not outside.

Jeremy Cowgar
[e-mail]

[juha]

Does your IDE run a different version of the JDK (rt.jar specifically)?

[jcowgar]

No, it's eclipse and when installs asks which RT you wish to use. I think it has to do something with Eclipse using class loaders.

Jeremy