jbpm4: could it simpler implementing an identical user in ma

[rogerofyan]

Hi all,

I'm implementing a homework process and illustrated in the following image:
[img]http://scude.co.cc/pub_img/homework-process.png[/img]
Take for example, a teacher named t1 will be the assignee of 'announce' task.
and many students(let's say 20) are asked to submit their homeworks.

I know that I could implement this by starting 20 process instances repectively. But I'd like to know is there simpler way to archive it, that's: the teacher t1 completes his task 'announce' only once, and 20 students will get a 'submit homework' task in their personal task list.

Thanks.

Roger

[kukeltje]

look at the foreach forkhandler in the wiki. It is for jBPM 3 but might be adapted for jBPM 4

[rogerofyan]

Thanks for the tip about forkhandler. But I don't find how to add action handler in jBPM4.

what confusing me is how to dynamically create multiple child executions after a fork node, the count of child executions is unknown when design the process.

Any tips is welcome.
Thanks.

Roger

[shekharv]

Look at the eventListener folder's process.jpdl.xml in the examples that come with jbpm4.

You could use something like:

<event-listener class="org.jbpm.examples.eventlistener.LogListener"/>


This listener could then be the base to trigger the code that you could use to dynamically build the process.

[rogerofyan]

"shekharv" wrote:

You could use something like:
<on event="start">
<event-listener class="org.jbpm.examples.eventlistener.LogListener"/>
</on>

This listener could then be the base to trigger the code that you could use to dynamically build the process.

I checked out the LogListener example and some jBPM4 source code, especially the EventListener related files.

In the definition of EventListener interface, there's only one method:

public void notify(EventListenerExecution execution) throws Exception {
 }

I can't find any method in EventListerExecution that is responsible for creating new execution or task. How to build the process dynamically in a listener?

Thanks.

Roger

[kukeltje]

Correct, that is up to you. But still I would go for my proposed solution and learn a little jBPM basics first (like you should when going for the eventlistener as well)