Re: OSWorkflow - initial action for steps?

Hmm, yeah. can't think of a way to do it currently without specifying a 
pre/post function in every caller. It sounds like you need the option 
of specifying pre/post functions to steps, not just to actions. Am I 
right? Does anyone else find this useful? Any objections to it? Any 
downside to having it in?

Hani

On Wednesday, May 7, 2003, at 03:59 PM, [email protected] wrote:

> I'm trying to model some workflows that use asynchronous processing 
> (by sending JMS
> messages to some other system) in OSWorkflow and I'm finding it 
> difficult. I can
> create steps than have actions (called manually ala the example) that 
> send JMS
> messages, and I've created a JMS listener that waits for the reply and 
> invokes the
> proper action to "complete" the step and let it transition to the next 
> step, no
> problem..
>
> But once I transition to the next step, say "Step B", there is no way 
> to
> automatically perform an action when the workflow transitions to that 
> "step" from
> somewhere else (maybe from a join, or from some other step's result). 
> I cant have
> every place that could possibly transition to Step B perform the JMS 
> action.. the
> same workflow XML would get propagated all over the place.. I want 
> Step B to
> perform the JMS action automatically whenever a workflow transitions 
> to it.
>
> Seems like what I need is the <initial-actions> stanza within a <step> 
> definition..
> That would allow the specified actions to occur whenever a transition 
> is performed
> to that step.
>
> What do you think? How hard woud that be?
>
> Can you think or any workarounds given the current model? There 
> doesn't seem to be
> any hook in the <step> definition that would allow me to perform an 
> action.. Makes
> it very difficult to use the product for workflows that are 
> "automatic" sorts of
> background flows, as opposed to users performing actions directly.
>
> -Greg
>
>
>
>
>
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