Process Flow from Sub-Process to main process issue

[abhilashs]

I am new to Activiti. I am trying to design a Process with a Sub-process i.e call activity, within a main process. 

MainProcess(helloworldprocess.bpmn20.xml)

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/processdef">
  <process id="helloworldprocess" name="helloworldprocess" isExecutable="true">
    <startEvent id="Start" name="Start"></startEvent>
    <serviceTask id="HelloWorld" name="HelloWorld" activiti:class="com.vega.activiti.HelloWorld"></serviceTask>
    <sequenceFlow id="sid-6447475E-EFF3-4FCD-B743-6767B8340EAA" sourceRef="Start" targetRef="HelloWorld"></sequenceFlow>
    <serviceTask id="MainProcess" name="MainProcess" activiti:async="true" activiti:class="com.vega.activiti.MainProcess"></serviceTask>
    <endEvent id="End" name="End"></endEvent>
    <sequenceFlow id="sid-8C35EFC3-12A4-4196-8929-9ABBA17AC282" sourceRef="MainProcess" targetRef="End"></sequenceFlow>
    <callActivity id="helloworldSubProcess" name="helloworldSubProcess">
      <extensionElements>
        <activiti:in source="inputMsg" target="inputMsg"></activiti:in>
        <activiti:in source="validateTrade" target="validateTrade"></activiti:in>
        <activiti:out source="outputMsg" target="outputMsg"></activiti:out>
      </extensionElements>
    </callActivity>
    <sequenceFlow id="sid-C501F40E-5E56-4B3E-9D3B-1BB13F2FD491" sourceRef="HelloWorld" targetRef="helloworldSubProcess"></sequenceFlow>
    <sequenceFlow id="sid-12BA3BE5-C3CF-43A7-BD9B-BB616592582F" sourceRef="helloworldSubProcess" targetRef="MainProcess"></sequenceFlow>
  </process>
</definitions>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

SubProcess(helloworldSubProcess.bpmn20.xml)

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/processdef">
  <process id="helloworldSubProcess" name="helloworldSubProcess" isExecutable="true">
    <startEvent id="SubprocessStart" name="SubprocessStart"></startEvent>
    <sequenceFlow id="sid-D59762FE-598B-4D7F-BDCB-DADF495FB88E" sourceRef="SubprocessStart" targetRef="Subprocess1"></sequenceFlow>
    <serviceTask id="Subprocess1" name="Subprocess1" activiti:class="com.vega.activiti.SubProcess1"></serviceTask>
    <endEvent id="EndSubProcess" name="EndSubProcess"></endEvent>
    <sequenceFlow id="sid-C7BFA9C8-1791-4F6D-A0B9-86B99EFFDDCE" sourceRef="Subprocess1" targetRef="EndSubProcess"></sequenceFlow>
  </process>
</definitions>‍‍‍‍‍‍‍‍‍‍

My Main Process contains a Service Task followed by callactvity then followed by another Service task.

Now when I run process the flow starts with first service task i.e HelloWorld Task then to the Subprocess. But when subprocess ends the process stops with Error:

Exception in thread "main" org.activiti.engine.ActivitiObjectNotFoundException: no processes deployed with key 'null'
   at org.activiti.engine.impl.persistence.deploy.DeploymentManager.findDeployedLatestProcessDefinitionByKey(DeploymentManager.java:125)
   at org.activiti.engine.impl.bpmn.behavior.CallActivityBehavior.execute(CallActivityBehavior.java:80)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:60)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:49)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:80)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:116)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:35)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:452)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:430)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:140)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:66)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
   at org.activiti.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.leave(AbstractBpmnActivityBehavior.java:47)
   at org.activiti.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.execute(ServiceTaskJavaDelegateActivityBehavior.java:41)
   at org.activiti.engine.impl.bpmn.helper.ClassDelegate.execute(ClassDelegate.java:158)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:60)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:49)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:80)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:116)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:35)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:452)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:430)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:140)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:66)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:60)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStartInitial.eventNotificationsCompleted(AtomicOperationProcessStartInitial.java:45)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStart.eventNotificationsCompleted(AtomicOperationProcessStart.java:64)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:97)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:633)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:628)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:380)
   at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:110)
   at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:37)
   at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:37)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)
   at org.activiti.engine.impl.RuntimeServiceImpl.startProcessInstanceByKey(RuntimeServiceImpl.java:69)
   at com.vega.activiti.Test.main(Test.java:25)
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The process flow does not return to the main Process to the 2nd service task in the Main Process.
I am not able to figure out the issue.  Is it right to deploy and Start in the subprocess in the service task?

Starting Main process:

public class Test {

   public static void main(String[] args) {

      ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

      RepositoryService repositoryService = processEngine.getRepositoryService();
      repositoryService.createDeployment().addClasspathResource("helloworldprocess.bpmn20.xml").deploy();

      RuntimeService runtimeService = processEngine.getRuntimeService();
      ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("helloworldprocess");
      
   }

}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Starting the subprocess from First service i.e HelloWorld Service.

public class HelloWorld implements JavaDelegate {

   public void execute(DelegateExecution execution) throws Exception {

      try {
         HashMap<String, Object> values = new HashMap<String, Object>();
         values.put("inputMsg", "Start Subprocess");

         EngineServices engineServices = execution.getEngineServices();

                 engineServices.getRepositoryService().createDeployment().addClasspathResource("helloworldSubProcess.bpmn20.xml").deploy();

            ProcessInstance processInstance = engineServices.getRuntimeService()
                  .startProcessInstanceByKey("helloworldSubProcess", values);

      } catch (Exception e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
      }

   }

}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

[jbarrez]

No, you need to deploy the subprocess and process xml before you run the main process.
Here, it seems you are trying to mix two things: the java delegate does not need to start the subprocess, that will be done by the callactivity.
For the callactivity to work, the process AND subprocess need to be deployed via the repositoryservice.

[abhilashs]

I deployed the Subprocess.xml along  with mainProcess.xml but still I am not able to get the flow back 2nd service task after the subprocess finishes executing. Did I miss anything else?

[iam]

In your process you have no calledElement for callActivity.
You have:
[java]
<callActivity id="helloworldSubProcess" name="helloworldSubProcess">
[/java]
And it shoul be like that:
[java]
<callActivity id="helloworldSubProcess" name="helloworldSubProcess" calledElement="helloworldSubProcess">
[/java]
I recomend you to set activity names in process definition with spaces and you will see it helps to understand what is wrong. There name is just a name, it is not a CallActivity key you want to call.
And with activityId too: it is more clear when you see something like callactivity1 or scripttask2 as it does activity designer.

Look this one example:
[java]
<callActivity id="callactivity1" name="Call activity 1" calledElement="testProcess">
[/java]
It is clear to understand that "callactivity1" is id and "Call activity 1" is just a name. And I want to call process with key "testProcess".

[abhilashs]

It worked for me. Thanks for your help.