[jboss-user] [jBPM] - Re: java.lang.String cannot be cast to org.jbpm.task.utils.MarshalledContentWrapper

package com.sample; import java.util.HashMap; import java.util.Map; import org.drools.KnowledgeBase; import org.drools.builder.KnowledgeBuilder; import org.drools.builder.KnowledgeBuilderFactory; import org.drools.builder.ResourceType; import org.drools.io.ResourceFactory; import org.drools.logger.KnowledgeRuntimeLogger; import org.drools.logger.KnowledgeRuntimeLoggerFactory; import org.drools.runtime.StatefulKnowledgeSession; import org.jbpm.process.workitem.wsht.HornetQHTWorkItemHandler; /** * This is a sample file to launch a process. */ public class ProcessTest {           public static final void main(String[] args) {                     try {                               // load up the knowledge base                               KnowledgeBase kbase = readKnowledgeBase();                               StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);                               KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(ksession, "test", 1000);                               // start a new process instance                               Map<String, Object> params = new HashMap<String, Object>();                               params.put("employee", "krisv");                               params.put("reason", "Yearly performance evaluation");                               ksession.startProcess("com.sample.evaluation", params);                               System.out.println("Process started ...");                               logger.close();                     } catch (Throwable t) {                               t.printStackTrace();                     }           }           private static KnowledgeBase readKnowledgeBase() throws Exception {                     KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();                     kbuilder.add(ResourceFactory.newClassPathResource("Evaluation.bpmn"), ResourceType.BPMN2);                     return kbuilder.newKnowledgeBase();           }           private static StatefulKnowledgeSession createKnowledgeSession(KnowledgeBase kbase) {                     StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();                     HornetQHTWorkItemHandler humanTaskHandler = new HornetQHTWorkItemHandler(ksession);                     humanTaskHandler.setIpAddress("127.0.0.1");                     humanTaskHandler.setPort(5445);                     ksession.getWorkItemManager().registerWorkItemHandler("Human Task", humanTaskHandler);                     return ksession;           } }

Process started ... Exception in thread "Thread-3" java.lang.ClassCastException: java.lang.String cannot be cast to org.jbpm.task.utils.MarshalledContentWrapper           at org.jbpm.task.utils.ContentMarshallerHelper.unmarshall(ContentMarshallerHelper.java:157)           at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.handleCompletedTask(GenericHTWorkItemHandler.java:208)           at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler$1.run(GenericHTWorkItemHandler.java:187)           at java.lang.Thread.run(Thread.java:722)