Is there a way to determine if the task was reassigned?

Question

I have the multi-instance parallel workflow.

By using the Activiti ScriptTaskListener I write to the some aspect of the workflow-model.xml some details of the business process. For example, in the event start I write all assignees:

...
var assigneesNodeRefs = '';
for(var i = 0; i < bpm_assignees.size(); i++) {
    var assignee = bpm_assignees.get(i);
    assigneesNodeRefs += ' separator ' + assignee.nodeRef;
}
execution.setVariable('mswf_participants', assigneesNodeRefs);
...

In the event complete I write some another details:

...
var reviewDate = new Date();
var bpmComment = task.getVariable('bpm_comment');
var result;
if(task.getVariableLocal('mswf_reviewOutcome') == 'Approve') {
    result = 'Approve';
}
...

Etc.

Then, by using the Alfresco Content Services REST API (tasks) I can get the list of variables for my task in JSON format. Next, by using JavaScript, I can parse it and display various data tables in different places.

I'm interested in the ability to reassign assignees.

Let's say, if assignee_1 reassigns his task to assignee_2, I want to write this fact In the Activiti ScriptTaskListener.

Is it possible?

Answer 1

Yes you can do it by using assignment event

example:

<userTask id="test" name="Assignb" activiti:assignee="userName" activiti:formKey="<<formKey>>">
     <extensionElements>

      <activiti:taskListener event="assignment" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
    <activiti:field name="script">
     <activiti:string><![CDATA[

       var currAssignee = task.assignee;
          //gives current task assignee
       logger.log(currAssignee );
     ]]></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[

      var currAssignee = task.assignee;

                  ]]></activiti:string>
               </activiti:field>
            </activiti:taskListener>
         </extensionElements>
 </userTask>