[rules-users] WorkItemNodeInstance and the on exit action

[Kris Verlaenen]

Chris,

Yes, we can only assure you the work item exists between it is triggered
and completed (or aborted).  So if you want to access any data related
to it in an on-exit action or any further part of the process, it's
probably best to simply map that data to a process variable.  This will
make you action code a lot simpler as well.

Kris

Quoting Chris Raschl <c.raschl-mailinglists at dyless.com>:

> Hi Kris,
> we experienced some troubles with our drools flow integration today
> (we upgraded to the lastest snapshot) and I found out that is has to
> do with a fix (see [1]) you commited some time ago.
> 
> Our problem is, that we access the data submitted by the user to
> finish a human task in the on exit action of the human task node
> like this:
> 
> WorkItemNodeInstance wini =
> (WorkItemNodeInstance)context.getNodeInstance();
> Map<String, Object> result = (Map<String,
> Object>)wini.getWorkItem().getResult("Result");
> 
> This results in a NPE because the workItemId is set to -1 in the
> WorkItemNodeInstance
> before getWorkItem() is called. So getWorkItem() returns null.
> 
> Is there a better (recommended) way to work with human task data?
> Maybe using an
> out-mapping?
> 
> Thanks,
> chris
> 
> [1]
>
http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/java/org/drools/workflow/instance/node/WorkItemNodeInstance.java?r1=32801&r2=
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