topic Re: Multi Instance Task does not assign approvers in Alfresco Forum

Multi Instance Task does not assign approvers

dhrobbins — Wed, 12 Apr 2017 09:52:32 GMT

I have a workflow in Alfresco Share where I need 4 parallel reviews / approval tasks. I am currently able to create 4 tasks but they all go to the same candidate group. Members of that group are able to approve, but they have all 4 tasks in their "My Tasks". Each of these tasks is unassigned. Th

Re: Multi Instance Task does not assign approvers

jearles — Wed, 12 Apr 2017 18:28:02 GMT

David,

One slightly more simple way around the multi-instance loop situation would be to just create a parallel gateway that splits into those 4 tasks and rejoins after they're completed; each task could use the same form and be directly assigned to those individual candidate groups that you're assigning. The functionality of rerouting after a rejection that you've shown above is entirely still plausible with this configuration as well.

There are a couple of other posts, particularly this one, where people have discussed the multi-instance functionality before and highlighted a couple points in getting it working. But yes, you are correct - the multi-instance is probably a solid route to go here and has the potential capabilities you're looking for.
The Activiti Modeler has assign functionality or you can establish the list of users as a variable.

Hope this helps,
-JEarles
bp3

Re: Multi Instance Task does not assign approvers

dhrobbins — Wed, 12 Apr 2017 20:02:03 GMT

Thanks for your reply. I am testing now ..

Re: Multi Instance Task does not assign approvers

dhrobbins — Thu, 13 Apr 2017 09:52:57 GMT

I am still a bit confused. I have assigned bpm_GroupAssignees to the activiti:collection and created and activiti:elementVariable "reviewGroup", my assumption being that the foreach loop would use bpm_groupAssignees as the source collection and reviewGroup at the variable. When I start the review step the workflow throws an exception "java.lang.NullPointerException: null".

I've seen other code that uses but I thought that the activiti:elementVariable would achieve the same thing.

<resourceAssignmentExpression>
   <formalExpression>${groupAssignee.properties.authorityName}</formalExpression>
</resourceAssignmentExpression>‍‍‍

Any insight would be greatly appreciated.

My updated code:

<userTask id="userTask1" name="Review step" activiti:candidateGroups="GROUP_approver_accounts,GROUP_approver_engineering,GROUP_approver_document" activiti:formKey="agsystemselect:reviewstep">
      <documentation>Review task</documentation>
      <extensionElements>
        <activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
          <activiti:field name="script">
            <activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate;
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;;]]></activiti:string>
          </activiti:field>
        </activiti:taskListener>
        <activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
          <activiti:field name="script">
            <activiti:string><![CDATA[if(task.getVariableLocal('agsystemselect_reviewsteptransitions') == 'Approve') {
execution.setVariable('agsystemselect_reviewstepapprovalcount', agsystemselect_reviewstepapprovalcount + 1);
}

if(task.getVariableLocal('agsystemselect_reviewsteptransitions') == 'Reject'){
     execution.setVariable('agsystemselect_reviewstepapprovalcount', 4);
}]]></activiti:string>
          </activiti:field>
        </activiti:taskListener>
      </extensionElements>
      <multiInstanceLoopCharacteristics isSequential="false" activiti:collection="bpm_groupAssignees" activiti:elementVariable="reviewGroup">
        <loopCardinality>3</loopCardinality>
        <completionCondition>${agsystemselect_reviewstepapprovalcount &gt;= agsystemselect_reviewsteprequiredapprovalcount}</completionCondition>
      </multiInstanceLoopCharacteristics>
    </userTask>
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