Composite execution problem

[beeke]

hello,

public void testSequence(){
 ClientProcessDefinition processDefinition = ProcessDefinitionBuilder
 .startProcess("propagate")
 .startActivity("sequence", new Sequence())
 .initial().needsPrevious().transition("end")
 .startActivity("one", new WaitState())
 .endActivity()
 .startActivity("two", new WaitState())
 .endActivity()
 .startActivity("three", new WaitState())
 .endActivity()
 .endActivity()
 .startActivity("end", new WaitState())
 .endActivity()
 .endProcess();

 ClientExecution execution = processDefinition.startProcessInstance();
 execution.signal();
 execution.signal();
 execution.signal();
}

Notice the line:.initial().needsPrevious().transition("end")
I want it execute like this:
(sequence(one -> two -> three)) -> end
In fact is sequence->end

I saw the source code, while activityImpl.createOutgoingTransition, the activity "end" is set to be a defaultTransition: defaultTransition = transition;

While executionImpl.proceed(), the "sequence" activity has defaultActivity, and will never executed as a block structed node.

How can PVM support block structed like this?
http://docs.jboss.org/jbpm/pvm/manual/html_single/images/ch02.transition.inheritence.png

[tom.baeyens]

structure of the process matches the image. its a matter of building your own ActivityBehaviours that implement what you want.

it's probably be easier to leverage jpdl instead.

[beeke]

Thank you, Tom

The Sequence class is :test-pojo/EventPropagationTest#Sequence.

public static class Sequence implements ExternalActivityBehaviour {
 private static final long serialVersionUID = 1L;
 public void execute(ActivityExecution execution) {
 List<Activity> activities = execution.getActivity().getActivities();
 if ( (activities!=null)
 && (!activities.isEmpty())
 ) {
 execution.execute(activities.get(0));
 }
 }
 public void signal(ActivityExecution execution, String signal, Map<String, Object> parameters) {
 Activity previous = execution.getPreviousActivity();
 List<Activity> activities = execution.getActivity().getActivities();
 int index = activities.indexOf(previous);
 index++;
 if (index < activities.size()) {
 Activity next = activities.get(index);
 execution.execute(next);
 }
 }

When I set the transition:.initial().needsPrevious().transition("end"),
the sequence activity in ExecutionImpl.proceed() will never executed as a block stucted code.

If I modify the structure like this:

.startActivity("three", new WaitState()).transition("end")
.endActivity()

It works fine.

But the structure is
http://docs.jboss.org/jbpm/pvm/manual/html_single/images/ch02.transition.out.of.composite.png

Can you tell me how to write a currect ActivityBehaviour?
Thank you!