ClassCastException While Narrowing

Hi,
I have my application deployed as EAR file, with a WAR and two JAR for the statelesss session beans. On Server start up I call a servlet (in the WAR), which invokes the EJB deployed in one of the JAR file. At that instance it is giving the following Error:
Exception :Cannot narrow remote object to au.com.three.hutchison.hss.ejb.staticinfo.StaticInfoHome
java.lang.ClassCastException: Cannot narrow remote object to au.com.three.hutchison.hss.ejb.staticinfo.StaticInfoHome
     at weblogic.iiop.PortableRemoteObjectDelegateImpl.narrow(PortableRemoteObjectDelegateImpl.java:242)
     at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
     at au.com.three.hutchison.hss.service.HSSServiceFactory.narrow(Unknown Source)
     at au.com.three.hutchison.hss.service.HSSServiceFactory.lookupHome(Unknown Source)
     at au.com.three.hutchison.hss.service.HSSServiceFactory.getRemote(Unknown Source)
     at au.com.three.hutchison.init.InitConfigInfoServlet.init(Unknown Source)
     at weblogic.servlet.internal.ServletStubImpl$ServletInitAction.run(ServletStubImpl.java:1070)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
     at weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java:893)
     at weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStubImpl.java:842)
     at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:782)
     at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:3236)
The same code used to work fine before, but I had some class loader issues to resolve which i set the 'prefer-web-inf-classes' to true in the weblogic.xml of the WAR. However after that I started getting the ClassCastException problem..
Any Help Would be Hghly Appreciated
Thanks
Nitin

here's the weblogic-application.xml that i have used to specify different classloaders
<!DOCTYPE weblogic-application PUBLIC '-//BEA Systems, Inc.//DTD WebLogic Application 8.1.0//EN' 'http://www.bea.com/servers/wls810/dtd/weblogic-application_2_0.dtd'>
<weblogic-application>
     <classloader-structure>
          <module-ref>
               <module-uri>hssWebApp.war</module-uri>
          </module-ref>
          <module-ref>
               <module-uri>StaticInfoBean/StaticInfoBean.jar</module-uri>
          </module-ref>
          <module-ref>
               <module-uri>HSSGWSBean/HSSGWSBean.jar</module-uri>
          </module-ref>
     </classloader-structure>
</weblogic-application>

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"Marc" <[email protected]> writes:
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I'm trying to deploy an EJB on weblogic 6.1 SP4 on an AIX system, and a client
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and servlet has to use RMI-IIOP (due to exploitation constraints).
I receive this exception when getting the reference of the EJB's home :
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at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:132)
at cliEjbMweb.cliTstMweb.narrow(cliTstMweb.java:133)
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[sanpraka@localhost certEjb]$

We have a similar problem. We have a web application (on server A) that invokes an EJB on a remote server (server B). This works fine, until we deploy another web application to server A at which point the existing web application starts to throw java.lang.ClassCastException when narrowing the remote EJB interface. The exception starts to be thrown at the moment the latter web application is deployed - start is not required.
The latter web application contains (actually in APP-INF/lib) the old version of the EJB remote interface, that somehow gets to be loaded into the classpath of the existing web application. The solution is to delete the old version of the EJB remote interface from APP-INF/lib of the latter web application (we didn't need it anyway), but it would be interesting to know in which circumstances classes can get mixed between enterprise applications.
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I am getting the system log related to the error
08/06/23 17:26:31 RequestHandler:1CCC01
08/06/23 17:26:31 RequestHandler:1RoutingProcessFacade
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08/06/23 17:26:32 RequestHandler:1
08/06/23 17:26:32 RequestHandler:2
08/06/23 17:26:32 RequestHandler:3
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08/06/23 17:26:32 RequestHandler:4
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08/06/23 17:26:32 __Proxy1
The stack trace is also attached
08/06/23 17:26:32 java.lang.ClassCastException
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08/06/23 17:26:32      at com.ccc.action.HoldThread.run(HoldThread.java:43)
08/06/23 17:26:32      at java.lang.Thread.run(Thread.java:534)
08/06/23 17:26:32 java.lang.NullPointerException
08/06/23 17:26:32      at com.ccc.action.HoldThread.run(HoldThread.java:50)
08/06/23 17:26:32      at java.lang.Thread.run(Thread.java:534)
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( This post was moved from SQL / PLSQL forum to here )
Hi everyone, i used to pass string array from java to plsql. I wrote a java source, then i load db with loadjava. And i wrote java spec. Then i run the function but i am getting this error :
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at oracle.sql.ArrayDescriptor.createDescriptor(ArrayDescriptor.java:158)
at oracle.sql.ArrayDescriptor.createDescriptor(ArrayDescriptor.java:125)
at SplitterOracle3.tokens2(SplitterOracle3.java:29)
But i could not find the solution. Can you help me?
Thanks for responses.

Hi,
Did you try my suggestion from Re: java.lang.ClassCastException while create array descriptor
Try replacing
oracle.jdbc.driver.OracleConnectionwith
oracle.jdbc.OracleConnectionRegards
Peter

ClassCastException while creating sendstream

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Hello,
I am getting the ClassCastException when I am narrowing the looked up home object.
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With Regards,
J. P. Naidu

Hi Pullaiah,
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I am facing the same problem while deploying a stateless session bean in Oracle 9i AS 1.0.2.2.1. The details are given below.
The following code snippet is used in the client to prepare for the lookup:
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env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "admin");
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Hi Gauarv,
Did you not see my reply in the following post?
Re: 502 service temporarily unavailable
If I'm not mistaken, this is exactly the same question as you asked
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By the way, is there some reason you are still using OC4J version
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Avi.

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==============================================
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Please post the stack trace. Also, take a look at our EJB FAQ to make sure you're doing the
recommended lookup :
https://glassfish.dev.java.net/javaee5/ejb/EJB_FAQ.html

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## Detail 0 ##
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     oracle.jbo.server.RowImpl oracle.jbo.server.QueryCollection.createRowWithEntities(int[], oracle.jbo.server.EntityImpl[], oracle.jbo.server.ViewRowSetImpl, oracle.jbo.AttributeList)
          QueryCollection.java:727
     oracle.jbo.Row oracle.jbo.server.ViewRowSetImpl.createRowWithEntities(int[], oracle.jbo.server.EntityImpl[], oracle.jbo.AttributeList)
          ViewRowSetImpl.java:1384
     oracle.jbo.Row oracle.jbo.server.ViewRowSetImpl.doCreateAndInitRow(oracle.jbo.AttributeList)
          ViewRowSetImpl.java:1430
     oracle.jbo.Row oracle.jbo.server.ViewRowSetImpl.createRow()
          ViewRowSetImpl.java:1406
     oracle.jbo.Row oracle.jbo.server.ViewObjectImpl.createRow()
          ViewObjectImpl.java:5133
     void oracle.dacf.dataset.RowsetAccessImpl.newRow()
          RowsetAccessImpl.java:1013
     void client.CustomerEditDlg2.reInitData(int, long, long)
          CustomerEditDlg2.java:2017
     void client.MainFrame.jMenuItem1_actionPerformed(java.awt.event.ActionEvent)
          MainFrame.java:766
     void client.MainFrame$17.actionPerformed(java.awt.event.ActionEvent)
          MainFrame.java:283
     void javax.swing.AbstractButton.fireActionPerformed(java.awt.event.ActionEvent)
          AbstractButton.java:1450
     void javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(java.awt.event.ActionEvent)
          AbstractButton.java:1504
     void javax.swing.DefaultButtonModel.fireActionPerformed(java.awt.event.ActionEvent)
          DefaultButtonModel.java:378
     void javax.swing.DefaultButtonModel.setPressed(boolean)
          DefaultButtonModel.java:250
     void javax.swing.AbstractButton.doClick(int)
          AbstractButton.java:279
     void javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(java.awt.event.MouseEvent)
          BasicMenuItemUI.java:886
     void java.awt.Component.processMouseEvent(java.awt.event.MouseEvent)
          Component.java:3715
     void java.awt.Component.processEvent(java.awt.AWTEvent)
          Component.java:3544
     void java.awt.Container.processEvent(java.awt.AWTEvent)
          Container.java:1164
     void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent)
          Component.java:2593
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1213
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent)
          Container.java:2451
     boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent)
          Container.java:2216
     boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent)
          Container.java:2125
     void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent)
          Container.java:1200
     void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent)
          Window.java:922
     void java.awt.Component.dispatchEvent(java.awt.AWTEvent)
          Component.java:2497
     void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent)
          EventQueue.java:339
     boolean java.awt.EventDispatchThread.pumpOneEventForHierarchy(java.awt.Component)
          EventDispatchThread.java:131
     void java.awt.EventDispatchThread.pumpEventsForHierarchy(java.awt.Conditional, java.awt.Component)
          EventDispatchThread.java:98
     void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional)
          EventDispatchThread.java:93
     void java.awt.EventDispatchThread.run()
          EventDispatchThread.java:85
I have seen this type of error earlier but this time exception is throws from the very core of the BC4J framework.( void oracle.jbo.server.EntityImpl.doCreate(oracle.jbo.AttributeList) ). "Customers" entity object does have a number of associated objects and I think that this is somehow related to the associations.
Can anyone help me with this? Thank you

java.lang.ClassCastException: oracle.jbo.server.EntityRowSetImpl
     void oracle.jbo.server.EntityImpl.doCreate(oracle.jbo.AttributeList)
          EntityImpl.java:399
I have seen this type of error earlier but this time exception is throws from the very core of the BC4J framework.( void oracle.jbo.server.EntityImpl.doCreate(oracle.jbo.AttributeList) ). "Customers" entity object does have a number of associated objects and I think that this is somehow related to the associations. You're right on the target. It seems like you have a composition association where the master side returns a RowIterator rather than a Row (meaning association cardinality for the master/source side for the composition association is 'many'). That should not be allowed. Infact this is a design time bug for the BC4J association wizard. I've logged it as bug number 2678717
Can anyone help me with this? Thank you

Getting ClassCastException while calling a method in webservice

I wrote small webservice using axis. It is returning array of object(of xyz type) where an object is a Value object.
I created stubs and place at client side as a jar file. xyz.class is also there in stubs list.
While calling that webservice im getting the following exception.can u please help me on this?
The code is:
xyz[] so     =     lmsDel.getNumber();
AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: java.lang.ClassCastException: [Ljava.lang.Object;
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}hostname:evoke12
java.lang.ClassCastException: [Ljava.lang.Object;
at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder
.java:222)
at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.
java:129)
at org.apache.axis.encoding.DeserializationContext.endElement(Deserializ
ationContext.java:1087)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endEleme
nt(AbstractSAXParser.java:633)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scan
EndElement(XMLNSDocumentScannerImpl.java:719)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:834)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.
java:148)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Ab
stractSAXParser.java:1242)
at weblogic.xml.jaxp.WebLogicXMLReader.parse(WebLogicXMLReader.java:133)
at weblogic.xml.jaxp.RegistryXMLReader.parse(RegistryXMLReader.java:153)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
at org.apache.axis.encoding.DeserializationContext.parse(Deserialization
Context.java:227)
at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnders
tandChecker.java:62)
at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
at org.apache.axis.client.Call.invoke(Call.java:2767)
at org.apache.axis.client.Call.invoke(Call.java:2443)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)
at com.cscinfo.webservice.client.LmsServiceSoapBindingStub.getSOPCountBy
NatureOfCase(Unknown Source)
at com.cscinfo.cscglobal.web.action.EnterCSCGlobalAction.execute(EnterCS
CGlobalAction.java:68)
at org.apache.struts.action.RequestProcessor.processActionPerform(Reques
tProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.ja
va:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:116
4)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run
(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecuri
tyHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.jav
a:283)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:42)
at com.cj.trim.trimFilter.doFilter(Unknown Source)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:42)
at weblogicx.servlet.gzip.filter.GZIPFilter.doFilter(GZIPFilter.java:70)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:3229)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppS
ervletContext.java:2002)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletC
ontext.java:1908)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.j
ava:1362)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Edited by: avn_venki on Jan 30, 2008 1:17 AM

Delegate definition:
public xyz[] getCount(String accessType,long orgId,Date fromDate,Date toDate)
          return lmsServiceImpl.getCount(accessType,orgId,fromDate,toDate);
Calling code in client:
xyz[] so     =     lmsDel.getCount("group",l,calendar,calendar);
Do i need to add anything to the wsdd file for the xyz bean type??

ClassCastException while inserting in oracle.sql.BLOB

Hi,
I have to insert a blob data in to database . I wrote the code . I'm having a ClassCastException problem in the line oracle.sql.BLOB blob = oracle.sql.BLOB.createTemporary(st.getConnection(), false,
oracle.sql.BLOB.DURATION_CALL); while trying to store a BLOB value I'm using Oracle 9i. (JDBC classes12.jar).
if I use the method with a dedicated database connection that specifies the driver as oracle.jdbc.driver.OracleDriver there is no problem .
But when I use JBoss to run , I will get ClassCastException
I imagine that somewhere in the code of this method there is a cast of the underlying connection leading to the ClassCastException when used in conjunction with the jboss datasource. The code to save the BLOB is as follows:
String sql = " update test set code = ? where id = ? ";
             BLOB   newBlob = BLOB.createTemporary(dbcon, false, BLOB.DURATION_CALL);
              newBlob.putBytes(1,data.getBytes());
              stmt = dbcon.prepareStatement(newsql);
             stmt.setBlob(1, newBlob);
             stmt.setInt(2, Studid );
             stmt.executeUpdate();
             stmt.close();Can any one tell me how can I get this code to work with the datasource implementation.
Thanks

I think this could be a problem with the class loader . Take a look at this thread It should solve your problem.
http://forum.java.sun.com/thread.jspa?forumID=48&threadID=788715

IMP:ClassCastException while using File upload UI in Webdynpro for java

Hi All,
I have used a FileUpload UI element in my screen , which is working fine for only the first time we upload a file. If we try to upload any file with out refreshing the application , a ClassCastException is being thrown. Please help me in resolving the issue.
Thanks in advance.
Srikanth

Thank you!!
1. But when i use the File Upload UI and try to use the 'data' property to retrieve the bytes i am getting a null pointer exception meaning the data is not being picked up by the UI even though browsed file has data.
2. How I am I supposed to set the 'Resource' property while downloading a PDF which has UTF-16 text and picture??
Note: I have done the same scenario using WD04 java without any trouble.
reg
vln

ClassCastException at narrow (Servlet/EJB)

Hi
I am new to this EJB concept.
I try to use an EJB in a servlet but I have a ClassCastException thrown by the narrow method.
I've already looked through the forums , but I haven't seen a solution for me.
I use JBOSS-3.0.8 and TOMCAT-4.0.1.
I include the client jar file generated by the deploytool in my client classpath.
Here is the part of the servlet calling the EJB:
Properties props= new Properties();
props.put(Context.PROVIDER_URL, "jnp://localhost:1099");
props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
try {
Context jndiContext = new InitialContext(props);
System.out.println("Lookup");
Object object = jndiContext.lookup("ejb/eltUtil");
System.out.println("Object =>" + object.getClass()+"<=");
System.out.println("Object =>" + object.toString()+"<=");
System.out.println("PortableRemoteObject");
UtilHome lUtilHome = (UtilHome)PortableRemoteObject.narrow(object,UtilHome.class);
Here is the result in the jsp page:
java.lang.ClassCastException
     at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:296)
     at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)
     at fr.gouv.defense.cimd.authentification.servlet.ServletListeUtil.doGet(ServletListeUtil.java:87)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1011)
     at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
     at java.lang.Thread.run(Thread.java:484)
And the log message in Tomcat:
Lookup
Object =>class org.jnp.interfaces.MarshalledValuePair<=
Object =>org.jnp.interfaces.MarshalledValuePair@53cdaa<=
PortableRemoteObject
When I run the code in a Client interface in Eclipse, that works and the log is :
Lookup
Objet =>class $Proxy0
Objet =>ejb/eltUtilHome
PortableRemoteObject
I don't know what to do.
Does anybody got the answer?
Thanks.

even if isAssignableFrom returns false, still it can work.....
here is how
Object notificationServiceObject = initialContext.lookup(NotificationServiceHome.JNDI_NAME);
//Key Step
Object notificationServiceRawObject = ((org.jnp.interfaces.MarshalledValuePair)
notificationServiceObject).get();
NotificationServiceHome notificationServiceHome =
          (NotificationServiceHome)javax.rmi.PortableRemoteObject.narrow
(notificationServiceRawObject,NotificationServiceHome.class);
NotificationService notificationService = notificationServiceHome.create();

Java.lang.ClassCastException PortableRemoteObject.narrow(PortableRemoteObje

Hi,
I have a problem with a JNDI -lookup() using the CORBA namig system.
After looking up: System.out.println( lookup("jndi-name") );
I get an IOR: IOR:0000000000000053524d493a...............
ok
then I print out the name and the package of this object:
Object o = lookup("jndi-name");
System.out.println("name of o : " + o.getClass().getName());
System.out.println("package of o : " + o.getClass().getPackage());
and get:
name of o : com.sun.corba.ee.impl.corba.CORBAObjectImpl
package of o : package com.sun.corba.ee.impl.corba
I expected the type of a Home-Interface, so that i could narrow the object o:
PortableRemoteObject.narrow( o , classname);
and the result is a:
java.lang.ClassCastException
at com.sun.corba.ee.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)........
What's wrong

The most likely reason is that the stubs for that home interface are not being found. Double-check your classpath to make sure they are available to the code at runtime.
-ken

ClassCastException While Narrowing

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