Multi instance user task with empty collection

[felipe1]

Hi!

I have a user task with multi instance characteristics,

                <userTask
         id="my-task"
         activiti:assignee="#{assignee}"
         activiti:formKey="form.xhtml"
         name="My Task">

         <multiInstanceLoopCharacteristics
            id="MultiInstanceLoopCharacteristics_1"
            activiti:collection="#{myBean.getListOfApprovers}"
            activiti:elementVariable="assignee">
            <completionCondition
               xsi:type="tFormalExpression"
               id="FormalExpression_1">
               ${approved == false}
            </completionCondition>
         </multiInstanceLoopCharacteristics>
      </userTask>
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It works great if <b>myBean.getListOfApprovers</b> returns 1 or more elements, however if the list is empty I get a "Invalid number of instances: must be positive integer value, but was 0".

I would like to skip that user task if the list returns 0, what is the best way to achieve that?

Thanks!

[martin_grofcik]

Hi Felipe,

https://github.com/Activiti/Activiti/pull/364

Regards
Martin

[felipe1]

Awesome Martin!!!

Now, can you please help me understand in which release is this change available (or will it be available)?

Cheers!

[jbarrez]

It'll be the next one - which will be 5.17 or 5.16.3 (dependening of how big changes are).
Probably this won't be released until the second week of Octorber (at minimum)

[felipe1]

Great! Thanks Joram!

[jbarrez]

Well - spoke to soon. 5.16.3 was just released

(this is a bugfix release with no db changes)