Get a list of taskinstances using jpdl- error-local class i

[anuradhas]

I have written a code to get a list of taskinstances for a particular user using jpdl.

But i am getting an exception in it

Exception : java.lang.reflect.UndeclaredThrowableException
Cause : java.io.InvalidClassException: org.hibernate.collection.AbstractPersistentCollection; local class incompatible: stream classdesc serialVersionUID = 7602608801868099635, local class serialVersionUID = -5723701046347946317
StackTrace : [Ljava.lang.StackTraceElement;@18ee9d6


The code is-

package com.sample.action;

import javax.rmi.*;
import javax.naming.*;
import org.jbpm.ejb.*;
import org.jbpm.command.*;
import org.jbpm.taskmgmt.exe.TaskInstance;
import java.util.List;

public class Test1
{
public static void main (String[] args)
{
String[] actors = {"Anuradhaps"};
try
{
Context c = new InitialContext();
Object o = c.lookup ("ejb/CommandServiceBean");
RemoteCommandServiceHome home =(RemoteCommandServiceHome)PortableRemoteObject.narrow (o,RemoteCommandServiceHome.class);
RemoteCommandService RemoteCommandService = home.create();
GetTaskListCommand command = new GetTaskListCommand(actors);
List result = (List) RemoteCommandService.execute(command);
if ( result.isEmpty())
{
System.out.println("List empty");
}
else
{
TaskInstance TaskInstance=null;
while(result.iterator().hasNext())
{
TaskInstance =(TaskInstance)result.iterator().next();
System.out.println("name of task : " + TaskInstance.getName());
}
}
}
catch(Exception e)
{
System.out.println("Exception : " +e.toString());
System.out.println("Cause : " +e.getCause());
System.out.println("StackTrace : " +e.getStackTrace());
System.out.println("Message : " +e.getMessage());
}
}
}

Please help me solve this issue.

Regards,
Anuradha

[tom.baeyens]

question for user forum.

the version of AbstractPersistentCollection used to serialize the object was different from the version of the class to deserialize.

meaning your hibernate3.jar has changed and is incompatible with the current hibernate3.jar that you're using.

[anuradhas]

I have not changed/replaced hibernate jar file.
Then why do i face this error?

Can you please tell me how to solve this problem?
Regards,
Anuradha

[kukeltje]

I'd start by posting in the correct forum and then see if the hibernate.jar on the server side and client side are the same (that is what Tom indirectly said

[rwarno]

Hi,
I go t the same problem but found the reason. It was due to different hibernate related library versions of used on client and server side. Take care that jbossall-client.jar compliant with your jboss version precedes other hibernate library version on your classpath.

Regards,
Rafal