[rules-users] Resuming the Flow: SESSION_ID, PROCESS_INSTANCE_ID, WORKITEM_ID

[Kris Verlaenen]

You should basically only know the workItemId.  Whenever you have some
task that needs to be executed externally (and could take some time), a
new work item will be created.  When that work is finished, the work
item manager should be notified (using
manager.completeWorkItem(workItem.getId(), null)).

If you need to know what work needs to be completed, you should probably
make sure that your work item handler knows this.  For example, our work
item handler implementation for human tasks creates a new task in the
database every time a human task work item needs to be executed (and
stores the associated work item id in the db as well).  That allows a
user to ask the human task service for all tasks that still need to be
executed.  If the user completes the task, the manager is also signaled
that the work item has been completed (using manager.completeWorkItem).

So while you could use the code fragments that other have provided in
related mails already, I'm not sure you actually need those, as the
handler should be storing most info and signal the completion of the
work item using the work item id.

Kris

Quoting tolitius <webakaunt at gmail.com>:

> 
> Hi Flow Crew,
> 
>     This is about reloading the session and resuming the flow.
> 
>     Let's say the flow reached one of its wait states, and was
> persisted.
> 
>     Two days later an "assigned actor" does his/her duties, and the
> flow can
> be resumed.
> 
>     At this point, we need to call something, let's call it a
> WorkflowService, that would have a resumeFlow( someBusinessId )
> method that
> will be called.
> 
>     Here is where the question starts...
> 
>     I understand there are three pieces in this puzzle: SESSION_ID,
> PROCESS_INSTANCE_ID and WORKITEM_ID
> 
>     I also understand that in order to resume the flow, I need to get
> a hold
> of that certain work item that is ready to be completed, and let the
> flow
> know it is completed.
> 
>     But at the point, where I should resume the flow, I have no
> reference to
> neither SESSION_ID, PROCESS_INSTANCE_ID or WORKFLOW_ID.
> 
>     1.  How are these three related to each other?
> 
>     2.  How do I find these three associated IDs?
> 
>     2.  Which one(s) do I need to resume the flow?
> 
>     3.  If I (somehow) get the reference to SESSION and
> PROCESS_INSTANCE
> ids, how do I know which work item is ready to be completed?
> 
> Thank you,
> /Anatoly
> -- 
> View this message in context:
>
http://n3.nabble.com/Resuming-the-Flow-SESSION-ID-PROCESS-INSTANCE-ID-WORKITEM-ID-tp607507p607507.html
> Sent from the Drools - User mailing list archive at Nabble.com.
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