topic Re: 'Key' Task in Alfresco Archive

'Key' Task

burn83 — Sun, 09 Dec 2012 11:05:54 GMT

Hello!!! i'm a new user of this workflow engine!!I'm very pleased to join in this community!!In my use case…i would like to say if in activiti workflow it's possible to set some task in order to trasform them in "key" task..id est:start -> task1 -> "task2=Key" -> task3 -> task4=Key ->

Re: 'Key' Task

jbarrez — Mon, 10 Dec 2012 09:43:40 GMT

That would be a pretty complex thing to do. I'm afraid BPMN 2.0 doesn't have such semantics out of the box.
I would start by looking into transactions (BPMN semantics, not technical!) and compensation handlers … but it'll be pretty tricky I think.

Re: 'Key' Task

dognose — Mon, 10 Dec 2012 11:32:17 GMT

I would do the following:

- Mark KeyTasks in a certain way. (By using a certain PriorityScope or sth).
- Mark Non-KeyTasks also.
- Add a SignalCatchingEvent to every Non-KeyTask leading back to the Key-Task. (Call it "AbortSignal_task3" or sth.)
- When user logs out (or session expires?) Send the "AbortSignal" to all active Non-KeyTasks of the current user.
(Here the priority comes into play: You can simple query for all active Tasks with priority 3 for example)

However this will just make the flow return to the keytask. Values the user entered in a prior exectuion will remain visible.
If you need to have those cleared, you can add a service task doing this.

Re: 'Key' Task

burn83 — Mon, 10 Dec 2012 23:06:19 GMT

I would do the following:

- Mark KeyTasks in a certain way. (By using a certain PriorityScope or sth).
- Mark Non-KeyTasks also.
- Add a SignalCatchingEvent to every Non-KeyTask leading back to the Key-Task. (Call it "AbortSignal_task3" or sth.)
- When user logs out (or session expires?) Send the "AbortSignal" to all active Non-KeyTasks of the current user.
(Here the priority comes into play: You can simple query for all active Tasks with priority 3 for example)

However this will just make the flow return to the keytask. Values the user entered in a prior exectuion will remain visible.
If you need to have those cleared, you can add a service task doing this.

sorry…what's "sth"!?

Re: 'Key' Task

dognose — Tue, 11 Dec 2012 11:49:45 GMT

sth. = something.

Re: 'Key' Task

burn83 — Tue, 11 Dec 2012 21:46:32 GMT

.. thx!