On Fri, Feb 6, 2009 at 7:51 PM, Gonzalo <[email protected]> wrote:
>
> First of all, I'm very new to ruote-rest and workflows. Any workflow
> is made up of several activities which are arranged in order to fit a
> business process. Is then the term activity and participant (ruote
> term) interchangeable?
Hi Gonzalo,
well, for the ruote engine, there are no activities, just participants.
One convention is to label a participant with an 'activity' attribute, like in
<participant ref="supervisor" activity="last check" />
or
<supervisor activity="last check" />
The workitem the supervisor participant will receive will contain a
field "params" that look like { 'activity' => 'last check' }
> On the other hand... activities proceeding
> (activity continuation), like filling a form or validating it may
> require some king of authentication... How can this be achived best
> with ruote-rest?
There is no fine-grained authentication integrated in ruote-rest. It
was thought as a "back office" service. Applications using it are
meant to do the authentication / authorization by themselves.
Ruote-web2 has authentication and authorization.
Kenneth Kalmer implemented some authentication for ruote-rest. It is
visible in conf/authentication.yaml
> Is it best to load the workitem payload with read-
> only attributes managing permissions for that workitem? What other
> alternatives could be implemented?
There is a "filter" mechanism that could interest you :
http://openwferu.rubyforge.org/expressions.html#exp_filter_definition
http://openwferu.rubyforge.org/expressions.html#exp_filter
It's a way of ensuring that some fields are not modified/visible by
participants. It's not much used, the form handling logic being
usually kept away from the engine (inside of the participants).
I wrote recently about that in :
http://groups.google.com/group/openwferu-users/browse_frm/thread/f7d3c2781782e002
Your idea of attributes for managing permissions makes sense.
Best regards,
--
John Mettraux - http://jmettraux.wordpress.com
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