Re: OSWorkflow - initial action for steps?

[email protected]
Newsgroups gmane.comp.java.open-symphony.devel
Message-ID <[email protected]>
Yup. You understand what I mean.

Pre-functions for steps would work great and would be the cleanest implementation. 

As simple change you could just add an optional attribute in the "step" element 
that specifies an action to take automatically when the step is transitioned to.. 
like:

<step id="3" name="xxx" autoaction="101">
<actions>
<action id="101" name="Starting action..."> 
..

As I said earlier, something like this would help the tool be useful as a process-
modelling engine for processes that have no humans..

-Greg



---- Original Message ----
From:		Hani Suleiman
Date:		Wed 5/7/03 15:35
To:		[email protected]
Subject:	Re: [Opensymphony-developers] 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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