ClassCastException when calling findBy method

[Srinivas Vadlamani]

Hi
We are having a peculiar problem. When we call the findBy method. It returns an enum. After typecasting to the right object, we get a ClassCastException when doing an enum.nextelement().
Please help us.
Regards
Srinivas

The code snippet and the error is given below.

Code snippet
=============================================================================================================================
Enumeration itemsEnum = myItemsEnumeration;
HashMap colorItemMap = new HashMap();
ArrayList distributionLotList = new ArrayList();
long quanityToAllocate = 0;
while (itemsEnum.hasMoreElements()) {
System.out.println("Before line 345...");
ItemInformation itemInfo = (ItemInformation) itemsEnum.nextElement();
ItemC itemObj = new ItemC();
itemObj
.initItem_withClassCode_vendorCode_styleCode_colorCode_sizeCode_prepackCode(
itemInfo.getClassCode(),
itemInfo.getVendorCode(),
itemInfo.getStyleCode(),
itemInfo.getColorCode(),
0,
null);
if (colorItemMap.containsKey(itemObj)) {
((Vector) colorItemMap.get(itemObj)).add(itemInfo);
} else {
Vector colorVector = new Vector();
colorVector.add(itemInfo);
colorItemMap.put(itemObj, colorVector);
// contains a list of vectors and the vectors contain same type of Colors.
}
}

=============================================================================================================================
java.lang.ClassCastException: org.omg.stub.javax.ejb._EJBObject_Stub
at com.i3j.prodapt.group.AllocatorC.buildComponent(AllocatorC.java:345)
at com.i3j.prodapt.group.AllocatorC.doAllocation_ForAllocationSessionIndex_storeWeightSessionIndex(AllocatorC.java:552)
at allocator_jsp_7._jspService(allocator_jsp_7.java:90)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:139)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:286)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:415)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:544)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:159)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:286)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:106)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:499)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:278)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:105)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:67)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:123)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:106)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:125)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:315)
at com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnection.java:60)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:313)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:242)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:122)
com.i3j.prodapt.AllocationException: In Color loop buildComponent() java.lang.ClassCastException: org.omg.stub.javax.ejb._EJBObject_Stub
at com.i3j.prodapt.group.AllocatorC.buildComponent(AllocatorC.java:424)
at com.i3j.prodapt.group.AllocatorC.doAllocation_ForAllocationSessionIndex_storeWeightSessionIndex(AllocatorC.java:552)
at allocator_jsp_7._jspService(allocator_jsp_7.java:90)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:139)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:286)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:415)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:544)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:159)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:286)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:106)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:499)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:278)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:105)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:67)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:123)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:106)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:125)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:315)
at com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnection.java:60)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:313)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:242)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:122)

[Kyle Brown]

Do a PortableRemoteObject.narrow() on the objects returned back from the Enumeration prior to the cast. That will fix your problem.
Kyle

[Kiran Kumar]

Hi
I am also getting ClassCastException
Error :
java.lang.ClassCastException: org.omg.stub.javax.ejb._EJBObject_Stub
--------------------------------------------------
My code:
Context con = new InitialContext();
Object oHeader=con.lookup("UsersHome");
System.out.println("After Looked up");
java.math.BigDecimal attrFilterID = new java.math.BigDecimal("1140");
com.attrdefault.UsersHome home=(com.attrdefault.UsersHome)PortableRemoteObject.narrow(oHeader,UsersHome.class);
System.out.println(">>>>>>>>>>>>>>>>>>>>>>> got home :");
java.util.Enumeration enAccount = home.findUsersByAft_attr_filter(attrFilterID);
System.out.println(">>>>>>>>>>>>>>>>>>>>>>> got remote :");
System.out.println(">>>>>>>>>>>>>>>>>>>>>>> enum :"+(enAccount == null));
System.out.println(">>>>>>>>>>>>>>>>>>>>>>> enum hasmoreelements:"+(enAccount.hasMoreElements()));
if((enAccount.hasMoreElements()))
{
System.out.println(">>>>>>>>>>>>>>>>>>>>>>> Object Found :");
//Object o=enAccount.nextElement();
//System.out.println(">>>>>>>>>>>>>>>>>>>>>>> Class Name :"+o.getClass().getName());
//com.attrdefault.Users u = (com.attrdefault.Users)o;
com.attrdefault.Users u = (com.attrdefault.Users)PortableRemoteObject.narrow(enAccount.nextElement(),com.attrdefault.Users.class);
System.out.println(">>>>>>>>>>>>>>>>>>>>>>> User Name :"+u.getUser_name());

}
--------------------------------------------------
Eventhough I did PortableRemoteObject.narrow()
It is givving the Error.
Kyle pl help me.
regards
venkat