Programmatically Accessing Call Activity's Extension elements

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jorell

Since activiti doesnt support out parameters for call activity nodes that use multiInstanceLoops I am trying to implement my own solution to this. Basically every subprocess would right back its out variable in a Map. I have hit a snag though. I can' t figure out how to get the list of the parent process' call activity's out variables. I can get the FlowElement object of the call activity using the following code:

    RepositoryServiceImpl repositoryServiceImpl = (RepositoryServiceImpl) repositoryService;
    BpmnModel model = repositoryServiceImpl.getBpmnModel(processDefinitionId);
    Process process = model.getProcesses().get(0);
    FlowElement flowElement = process.getFlowElement(activityId);
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And this flowElement is of type CallActivity. But the call activity has no extension elements. My bpmn snippet for this node is below:

<callActivity id="testSubCallACtivity" name="test sub call activity" calledElement="testSubProcess">
      <extensionElements>
        <activiti:out source="approver" target="s_approver"/>
      </extensionElements>
      <multiInstanceLoopCharacteristics isSequential="false" 
          activiti:collection="IdList" activiti:elementVariable="Id">
      </multiInstanceLoopCharacteristics>
    </callActivity>
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Please let me know if I'm doing something wrong here. Thanks

martin_grofcik

Hi Jorell,

activiti doesnt support out parameters for call activity nodes that use multiInstanceLoops

I did not test it, but it can make sense -> variable can be overridden by the next loop. Some kind of mapping is needed.

But the call activity has no extension elements.

org.activiti.bpmn.model.CallActivity has lists of inParameter and outParameters.

<br>&nbsp; protected List<IOParameter> inParameters = new ArrayList<IOParameter>();<br>&nbsp; protected List<IOParameter> outParameters = new ArrayList<IOParameter>();<br>
Is there something in case of multi instance loop?


Regards
Martin