Getting the List of Subprocesses deployed

[jbpm42user]

We are trying to implement JBPM 4.2 for our next release. We have a requirement to display the list sub-processes as UI elements. At any point, we want to get the deployed sub-processes for a master process instance. Do we have an API to get all the nodes(including subprocesses, tasks, states) that are deployed as part of a process definition? I know that we can get the active executions but we need to display all the subprocesses at any time.

Any help is appreciated.

[kukeltje]

I've been looking a little into this, but every thing is way out of api usage. So you are completely on your own regarding support.

        ProcessDefinition pd = repositoryService.createProcessDefinitionQuery().processDefinitionId(processInstance.getProcessDefinitionId()).uniqueResult();
        Map<String, Activity> am = ((ProcessDefinitionImpl)pd).getActivitiesMap();
        Set<String> as = am.keySet();
        for (String string : as) {
            Activity a = am.get(string);
            if (a.getType().equals("sub-process")) {
                System.out.println(    ((SubProcessActivity)((ActivityImpl)a).getActivityBehaviour()).....); // no option to get the sub-process-key
            }
            
        }

In the end, there are methods missing on SubProcessActivity to get the sub-process-key, so you can not display it, or check if it is deployed at all.

[jbpm42user]

Thanks Ronald. This was so helpful!!! I just tested the code and works fine for me....

[kukeltje]

huh??? But you can't get to the sub process name... that is what you wanted right? So I'm very curious as how this was helpful

[jbpm42user]

I just changed the code to:

ProcessDefinition pd = repositoryService.createProcessDefinitionQuery().processDefinitionId(processInstance.getProcessDefinitionId()).uniqueResult();
            Map<String, Activity> am = ((ProcessDefinitionImpl)pd).getActivitiesMap();
            Set<String> as = am.keySet();
            for (String string : as) {
                Activity a = am.get(string);
                if (a.getType().equals("sub-process")) {
                    System.out.println(a.getName()); // no option to get the sub-process-key
                }
                if (a.getType().equals("task")) {
                    System.out.println(a.getName()); // no option to get the sub-process-key
                }
               
            }

We need to get the sub process name or the DBID and this code gets me both. So we need the name to map it to the UI element.

[kukeltje]

This does not give you the sub process name, it gives you the sub-process node name. The real process is a different attribute (see the code of SubProcessImpl in the source. But if you keep them manually the same, it does kind of work.

But keep in mind... NO guarantees that this keeps working in future versions, since you use non-api things.