How to get multi-instance task type

Camunda 7 Topics Discussion & Questions
1

During task execution, if the task is determined to be serial or parallel.

looking forward to your reply
wisdom

2

Are you looking for how to set multi-instance tasks in the Camunda Modeler?

3

@wisdom During runtime to determine the multi instance activity is parallel or sequential can be retrieved from multi instance loop characteristic of that activity.

    <bpmn:userTask id="Activity_0nx1m8l" name="Assign Role" camunda:asyncAfter="true" camunda:assignee="demo">
      <bpmn:extensionElements>
        <camunda:executionListener delegateExpression="${multiInstanceExecutionListener}" event="start" />
      </bpmn:extensionElements>
      <bpmn:incoming>Flow_18xcz6f</bpmn:incoming>
      <bpmn:outgoing>Flow_1604omz</bpmn:outgoing>
      <bpmn:multiInstanceLoopCharacteristics isSequential="true" camunda:collection="${X}" camunda:elementVariable="y" />
    </bpmn:userTask>

Adding below Execution listener to the start event will tell you whether multi instance is sequential or parallel.

@Slf4j
@Component
public class MultiInstanceExecutionListener implements ExecutionListener {

	@Override
	public void notify(DelegateExecution execution) throws Exception {
		boolean isMultiInstanceTask = ((ExecutionEntity) execution).getActivity().isMultiInstance();
		if (isMultiInstanceTask) {
			UserTaskActivityBehavior activityBehavior = (UserTaskActivityBehavior) ((ExecutionEntity) execution)
					.getActivity().getActivityBehavior();
			UserTask userTask = (UserTask) execution.getBpmnModelElementInstance();
			MultiInstanceLoopCharacteristics multiInstanceLoopCharacteristics = (MultiInstanceLoopCharacteristics) userTask
					.getLoopCharacteristics();
			String multiInstanceType = multiInstanceLoopCharacteristics.isSequential() ? "Sequential" : "Parallel";
			log.info("{} is multi instance activity? {} of type {} execution",
					activityBehavior.getTaskDefinition().getNameExpression(), isMultiInstanceTask, multiInstanceType);
		}
	}
}
4

Thank you for your pointers.The problem has been solved
thanks

5

I want to do the fetch in code, the problem has been solved in the next reply.
thank you for your reply