BC4J ServerModul in JBoss 3.2.3 throws a ClassCastException in SwingClient

Question

Hi Everyone,
in the last days i start crying very often, because i think i make a simple mistake with a hugh result -> nothing works ;(
Whats going wrong?
I deployed my BC4J ApplicationModule in JBoss, without any problems.
But when i try to access my ApplicationModule from a SwingClient i get headache. I did it like the HowTos explained. okay they are a bit out of date but it seems
that there are no points, where i could do something really wrong.
So i copied all libs and created a sample client explained in: http://otn.oracle.com/products/jdev/howtos/appservers/deploy_bc4j_to_jboss.html
And here is the problem:
The first problem i found is, that i can not lookup the
ApplicationModul via: ctx.lookup("de.orb.server.ServerModule")
This always results in a exception saying that this JNDI Name is not bound... okay.. i changed it to the EJB Name provided by JBoss: ctx.lookup("ServerModuleBMBean") and the Bean is found. Everything is fine.
When i try to access a ViewObject i got a reference which is looking fine, BUT doing operations on this reference always result in a very strange ClassCastException;
oracle.jbo.common.JboExMsgCarrier: java.lang.ClassCastException: org.jboss.resource.adapter.jdbc.WrappedPreparedStatement
     void oracle.jbo.common.PiggybackExceptionEntry.readObject(java.io.ObjectInputStream)
          PiggybackExceptionEntry.java:135
     java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[])
          native code
     boolean java.io.ObjectInputStream.invokeObjectReader(java.lang.Object)
          ObjectInputStream.java:2214
     int java.io.ObjectInputStream.inputObject(boolean)
          ObjectInputStream.java:1411
     java.lang.Object java.io.ObjectInputStream.readObject(boolean)
          ObjectInputStream.java:386
     java.lang.Object java.io.ObjectInputStream.readObject()
          ObjectInputStream.java:236
     void oracle.jbo.common.PiggybackInput.<init>(oracle.jbo.common.ObjectMarshaller, byte[])
          PiggybackInput.java:63
     void oracle.jbo.common.PiggybackInput.<init>(byte[])
          PiggybackInput.java:38
     void oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.processRemoteJboException(oracle.jbo.common.remote.ejb.RemoteJboException)
          RootApplicationModuleImpl.java:2925
     oracle.svcmsg.ServiceMessage oracle.jbo.client.remote.ejb.RootApplicationModuleImpl.riExecuteQuery(int, boolean, oracle.svcmsg.ServiceMessage)
          RootApplicationModuleImpl.java:735
     oracle.svcmsg.ServiceMessage oracle.jbo.client.remote.ejb.EJBApplicationModuleImpl.riExecuteQuery(int, boolean, oracle.svcmsg.ServiceMessage)
          EJBApplicationModuleImpl.java:314
     void oracle.jbo.client.remote.ApplicationModuleImpl.executeQuery(int, boolean)
          ApplicationModuleImpl.java:5982
     void oracle.jbo.client.remote.RowSetImpl.executeQuery()
          RowSetImpl.java:950
     void oracle.jbo.client.remote.ViewUsageImpl.executeQuery()
          ViewUsageImpl.java:556
other Operations like:
System.err.println( vo.getApplicationModule().getName() );
System.err.println( vo.getName() );
System.err.println( vo.getFullName() );
System.err.println( vo.getQuery() );
System.err.println( ""+vo );
are working fine....
Please can anyone help me to solve this very strange problem. I need some advice, because i do not know what
happen et al.
I do not need to know how BC4J works with JSP Pages, i need to know how i can get it working with my SwingApplication and JBoss.
Regards Mirko
PS: Happy Easter!
i am using:
Jboss 3.2.3
Oracle 8i Database
JDeveloper 9.0.3.1035

Answer 1

I passed through this problem by adding the following property to the hashtable used to create InitialContext
env.put
(oracle.jbo.common.PropertyConstants.PN_SQLBUILDERIMPL,
oracle.jbo.common.PropertyConstants.SQL92);
Context ctx = new InitialContext(env);
Best regards,
Eduardo.