[rules-users] Access to globals from WorkItemHandlers?

Ed Staub estaub at telcordia.com
Tue Apr 20 11:40:29 EDT 2010


@Anatoly,

Thanks for the feedback.

>>    If they have access to globals, they would become always stateful, which is not _always_ the desired behavior. 

I don't see this, any more than with any other data.  If the WorkItem or WorkItemManager interface supplied a getGlobal(String name), and the WorkItemHandler doesn't stuff it away in a field or otherwise retain it as state, then it's not stateful - unless I'm missing something.

>>    But you can map all the variables into the handler, can't you? 

Yes, if I must.  But some resources used by workitems need to be configured by either the process initiator or a process participant, yet don't make sense in the variable domain.  Consider, e.g., a process where multiple workitems need to access a database - but the selection of database is up to the process initiator.  The connection credentials don't really belong in a variable, at least as I understand the intended uses for globals and variables.

-Ed

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