Subprocess loop

Camunda 7 Topics Discussion & Questions
1

Hi,
I’ve create simple process with subprocess loop:

loopTest

I would like control loop by process variable:
testLoopCondition - boolean set false after finished all execution loops

Definition subproces in definition looks:

<bpmn:subProcess id="_SubProcess" name="SubProcess" camunda:asyncBefore="true">
  <bpmn:extensionElements>
    <camunda:in variables="all" />
    <camunda:out variables="all" />
    <camunda:failedJobRetryTimeCycle>1</camunda:failedJobRetryTimeCycle>
    <camunda:properties>
      <camunda:property name="loopCondition" value="$(testLoopCondition1}" />
    </camunda:properties>
  </bpmn:extensionElements>
  <bpmn:incoming>SequenceFlow_1ybwx0a</bpmn:incoming>
  <bpmn:outgoing>SequenceFlow_1x93po6</bpmn:outgoing>
  <bpmn:standardLoopCharacteristics>
    <bpmn:loopCondition xsi:type="bpmn:tFormalExpression">${testLoopCondition}</bpmn:loopCondition>
  </bpmn:standardLoopCharacteristics>
  <bpmn:startEvent id="_startSubTask" camunda:asyncBefore="true">
    <bpmn:outgoing>SequenceFlow_0mlhe5u</bpmn:outgoing>
  </bpmn:startEvent>
  <bpmn:endEvent id="_endSubtask" camunda:asyncAfter="true">
    <bpmn:incoming>SequenceFlow_17zd2oj</bpmn:incoming>
  </bpmn:endEvent>
  <bpmn:sequenceFlow id="SequenceFlow_0mlhe5u" sourceRef="_startSubTask" targetRef="_looperTask" />
  <bpmn:sequenceFlow id="SequenceFlow_17zd2oj" sourceRef="_looperTask" targetRef="_endSubtask" />
  <bpmn:serviceTask id="_looperTask" name="LooperTask" camunda:delegateExpression="${looper}">
    <bpmn:extensionElements>
      <camunda:inputOutput>
        <camunda:outputParameter name="counter">${counter}</camunda:outputParameter>
      </camunda:inputOutput>
    </bpmn:extensionElements>
    <bpmn:incoming>SequenceFlow_0mlhe5u</bpmn:incoming>
    <bpmn:outgoing>SequenceFlow_17zd2oj</bpmn:outgoing>
  </bpmn:serviceTask>
</bpmn:subProcess>

When I’ve started this process looper task executed only one even testLoopCondition still be true.

What can I do wrong, or where can I found more information about definition loops in subprocess?

I know that this part of subproces can be recreated to:

obraz

General it’s part on bigger process for sequential send messages from list.

Regards Marcin

2

The Loop attribute is not supported in the engine. You have to use your gateway pattern to do the looping

3