Re: Re: [stp-dev] Discussion on policy support in STP]

["Johnson Ma" <johnson.ma@xxxxxxxx>]

Hi David,

You are right, the policy instance and policy template are not clearly 
identified in the previous proposal.
I have updated wiki page with some clarifications.

Basically, Policy Registry will be used to hold all Policy Templates (or 
Policy Schemas), which are created by policy developers.

Policy Instances saved together with service model (the STP intermediate 
metamodel) in ws-policy document.
I feel a need to add policy model as part of the service model, what do you 
think?


http://wiki.eclipse.org/Policy_Framework_in_STP


Regards

Johnson

----- Original Message ----- 
From: "David Bosschaert" <davidb@xxxxxxxx>
To: "STP Dev list" <stp-dev@xxxxxxxxxxx>
Sent: Thursday, October 04, 2007 5:59 PM
Subject: [Fwd: Re: [stp-dev] Discussion on policy support in STP]


Hi all,

I have a few comments and questions on the proposal as well. To make it
easy to relate my comments to the current proposal I've actually put
them on the wiki. You can easily find them by looking for 'David
Bosschaert'.
Sorry to pollute your document, Johnson, but I thought this would be the
clearest way of communicating them.

http://wiki.eclipse.org/Policy_Framework_in_STP

Cheers,

David

-------- Original Message --------
Subject: Re: [stp-dev] Discussion on policy support in STP
Date: Mon, 01 Oct 2007 16:31:33 +0200
From: Gerald Preissler <Gerald.Preissler@xxxxxxxxx>
Reply-To: STP Dev list <stp-dev@xxxxxxxxxxx>
To: Johnson Ma <johnson.ma@xxxxxxxx>, STP Dev list <stp-dev@xxxxxxxxxxx>


Johnson,

very good start on the subject, this will be quite interesting to discuss.

Some quick questions:

The description of the policy data model states that the policy model
used is different from WS-Policy or SCA Policy-Framework. Could you
explain the policy metaphor you're referencing a little bit? Am I
correct in assuming that it is more like WS-Policy policy assertion
(i.e., describing a single property) than policy alternative (i.e.,
combining multiple policy assertions into an entity that describes many
aspects, possibly describing several acceptable behaviours)?

Do you propose to actually add a Policy Registry to STP or do you want
to provide the interface definition that an actual registry has to
conform to?

Regarding the validation issues we have plans to generalize the
validation components that are currently integrated with our (sopera's)
editors into a generic validation framework. Maybe it would be a good
idea to contribute the code directly and work on the generalization
together?

I'm looking forward to discussing this further.

best regards

  Jerry Preissler


Johnson Ma wrote:
> Hi all,
>  We added the policy editor recently, so it is time to think more about 
> how to enforce SOA policy during developing and deploying service 
> component.  I wrote a proposal on stp wiki named "Policy Framework in 
> STP", hope that we can kick off a series of discussions from here on how 
> to support policy in STP.
>  http://wiki.eclipse.org/Policy_Framework_in_STP
>  Regards
>  Johnson Ma

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