Hi Marc,
Your problem is strange.
Are you sure it is about finder methods. The error message is:
"Failed to CREATE a new instance" ??
Are the given JOnAS examples works fine ?
(It will be interesting to run the example/eb)
Kind regards.
Hélène.
[EMAIL PROTECTED] wrote:
>
> Hi folks,
>
> following problem occurs when using a finder-method other than the
> findByPrimaryKey():
>
> Exception caught: RemoteException occurred in server thread; nested
> exception is:
> java.rmi.RemoteException: Failed to create a new instance of the bean
> class Test.TestEJBBean; nested exception is:
> java.lang.ClassCastException: Test.TestEJBBean
> java.rmi.ServerException: RemoteException occurred in server thread;
> nested exception is:
> java.rmi.RemoteException: Failed to create a new instance of the bean
> class Test.TestEJBBean; nested exception is:
> java.lang.ClassCastException: Test.TestEJBBean
> java.rmi.RemoteException: Failed to create a new instance of the bean
> class Test.TestEJBBean; nested exception is:
> java.lang.ClassCastException: Test.TestEJBBean
> java.lang.ClassCastException: Test.TestEJBBean
> at
>
>sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:245)
> at
> sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:220)
> at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:354)
> at org.objectweb.jonas.rmifilters.RemoteStub.invoke(RemoteStub.java:88)
> at
>
>Test.JOnASTestEJBBeanTestEJBHome_Stub.findByField1(JOnASTestEJBBeanTestEJBHome_Stub.java:74)
> at Test.TestEJBClient.main(TestEJBClient.java:72)
>
> I had a look at the code in the stub and was able to isolate the problem
> to one statement that fails.
> It's in the implementation class of the Home-interface
> (JOnASTestEJBBeanTestEJBHome).
> In the specific finder-method is a call to the inherited method
> getAvailable() which returns an instance of the Bean.
> The return value is casted to the bean's type and assigned to variable of
> the bean's type.
> Here's a snippet:
>
> Test.TestEJB eb = null;
> try {
> eb = (Test.TestEJB)getAvailable(); //!!!!!!!!!!!
> }
> catch (Exception e)
> {
> Trace.errln("Failed to create a new instance of the bean class
> Test.TestEJB");
> Trace.errln(e);
> throw new RemoteException("Failed to create a new instance of
> the bean class Test.TestEJB", e);
> }
>
> I altered the code to so I got the name of the class that is returned so I
> stored getAvailable() in an Object variable and did a
> object.getClass().getName() which returned me exactly the name "Test.TestEJB" which
>is the
> correct type, but nevertheless, a class cast occured.
> So I checked the object variable with the instanceof operator and la
> voila, this check said it wasn't of the type that it should be casted to.
> So I started the VM of the EJBServer with verbose mode and found out that
> the class Test.TestEJB was loaded twice?
> Why?
>
> Ah, I'm running JOnAS 2.0 on WinNT 4.0 using the normal RMI version. Java
> version is JDK1.3 (client + server).
>
> Does anyone has an idea???
>
> BR,
> Marc
>
> --
> Marc Eilens
> mailto: [EMAIL PROTECTED]
>
> Sent through GMX FreeMail - http://www.gmx.net
>
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