[jboss-user] [jBPM] - Exception while trying to access java return value

[snyperboss]

snyperboss [http://community.jboss.org/people/snyperboss] created the discussion

"Exception while trying to access java return value"

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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 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 at 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
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