Aggregate result from a loop

[rvashishth]

Hi,

I need to implement below basic flow, please suggest me the possible steps to implement

I have a service task as below

<serviceTask id="servicetask1" name="Service Task" activiti:class="com.demo.activititest.HelloServiceTask">
      <extensionElements>
        <activiti:field name="approver">
          <activiti:expression>${username}</activiti:expression>
        </activiti:field>
      </extensionElements>
      <multiInstanceLoopCharacteristics isSequential="true" activiti:collection="userlist" activiti:elementVariable="username"></multiInstanceLoopCharacteristics>
    </serviceTask>
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In the execution of every serviceTask call i am creating a new variable with username and value as true/false,  now my task is to check if for all the users from userlist are set to true or false, How i can aggregate the boolean result of loop or subprocess to make a decision.


Thanks,
Rahul

[rvashishth]

Same is discussed at
http://forums.activiti.org/content/how-create-loop-flow

[martin_grofcik]

Hi,

Your multiinstance loop is sequential. You can use one variable to aggregate result.
Another possibility is to iterate over result variables and evaluate condition.

Regards
Martin