JBoss Community

Hello all,

I am getting exception while trying to access the java method return value. Below are my source files.

HelloWorld.jpdl.xml:

###################

<?xml version="1.0" encoding="UTF-8"?>

  <process name="HelloWorld" xmlns="http://jbpm.org/4.4/jpdl">

            <start g="127,111,38,30" name="start1">

                    <transition name="to PrintHelloWorld" to="PrintHelloWorld"

                              g="-91,-18" />

          </start>

            <java class="com.jap.san.HelloWorldTest" g="496,126,80,47"

                    method="printHelloWorld" name="PrintHelloWorld" var="returnValue">

                    <transition g="-42,-18" name="to end1" to="end1" />

          </java>

   <end g="634,132,29,27" name="end1" />

</process>

HelloWorldTest.java:

##################

package com.jap.san;

import java.io.Serializable;

public class HelloWorldTest implements Serializable{

            public String printHelloWorld() {

                      System.out.println(" hi hi hi here @@@@@@");

              return "from method";

            }

}

Test file:

######################

ProcessEngine processEngine = new Configuration().setResource("jbpm.cfg.xml").buildProcessEngine();

                    RepositoryService repositoryService = processEngine.getRepositoryService();

                    ExecutionService executionService = processEngine.getExecutionService();

                    repositoryService.createDeployment().addResourceFromClasspath("com/jpmc/san/HelloWorld.jpdl.xml").deploy();

                    ProcessInstance processInstance =executionService.startProcessInstanceByKey("HelloWorld");

                    String pid = processInstance.getId();

                    String answer = (String) executionService.getVariable(pid, "returnValue");

                    System.out.println("answer");

It error out on in the  line

String answer = (String) executionService.getVariable(pid, "returnValue");

19:58:26,064 INF | [DefaultCommandService] exception while executing command org.jbpm.pvm.internal.cmd.GetExecutionVariablesCmd@b9b8d0

org.jbpm.api.JbpmException: execution HelloWorld.7 doesn't exist

          at org.jbpm.pvm.internal.cmd.GetExecutionVariablesCmd.execute(GetExecutionVariablesCmd.java:60)

          at org.jbpm.pvm.internal.cmd.GetExecutionVariablesCmd.execute(GetExecutionVariablesCmd.java:36)

          at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)

          at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:50)

          at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)

          at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)

          at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56)

          at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)

          at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.getVariable(ExecutionServiceImpl.java:131)

          at com.jpmc.san.TestDeployment.main(TestDeployment.java:34)

Thanks