How to list all stages from cmmn model

Camunda 7 Topics Discussion & Questions
1

Here the code :

InputStream inputStream = ModelController.class.getResourceAsStream(“/test2.cmmn”);
CmmnModelInstance modelInstance = Cmmn.readModelFromStream(inputStream);

ModelElementType stageType = modelInstance.getModel().getType(Stage.class);
Collection stages = modelInstance.getModelElementsByType(stageType);

The problem is that the order of stage in stages collection is not respected according to model (workflow). How to be able to have a list of stages which respects the order?

My CMMN model starts with a stage, then once it is finished, another one starts, then another, etc.

I could name my stages with number:

  1. Stage X
  2. Stage Y
  3. Stage Z
  4. …

And then order the collection according to the name, but it is not what i want.

Thanks for your help

2

Hi @nestolalu,

can you please share your CMMN model?

Best regards,
Philipp

3

I actually changed the project and decided to continue with BPMN model. So instead of stage i have Sub processes which are interconnected. The question remains the same.

How to retrieve the list of all sub processes (children of main process not sub sub processes) ? I would like to list the name of the sub processes

And how to retrieve the active sub process ?

4

Hi @nestolalu,

you can use the Model API to read the BPMN model and find the sub-processes.

If you want to know if the sub-process is active (i.e. if an execution is at the activity) then you can use the Execution Query of the RuntimeService.

Does this help you?

Best regards,
Philipp

5

Is there a way to find the correct order of subprocesses ?
subProcess1 --> subProcess2 --> subProcess3

When reading the BPMN model, the order is not guaranteed.

6