- From: Fabian Ritzmann <Fabian.Ritzmann@Sun.COM>
- Date: Fri, 25 Aug 2006 19:56:05 +0300
- To: Bijan Parsia <bparsia@cs.man.ac.uk>
- Cc: public-ws-policy@w3.org
Hi Bijan, Are you aware of Anne Anderson's work? She's designed a simple language that is compatible with WS-Policy and seems to fit your requirements: http://research.sun.com/projects/xacml/ I'd suggest this paper for a quick introduction: http://research.sun.com/projects/xacml/POLICY06_paper.pdf Fabian Bijan Parsia wrote: > > Title - > Policy assertion equivalence and generality > > Description - > Policy assertions are domain specific and opaque from the point > of view > of the operators. However, there are certain relations between > assertions that > could be asserted without breaking that opacity. For example, a policy > writer > could know that, from their point of view, two assertions were exactly the > same, or that one was a more general version of the other. For example, one > might want to specify that some form of reliable messaging is required, > without > specifying which specific forms. > > Justification - > Equivalence pretty much falls out of subsumption/generality. Let me > focus on generality. > > Having assertions related by subsumption allows one to write > *general* > policies that can be refined in particular cases. It also allows one to > *organize* policies in a hierarchy. Thus, even if the only policies one > deploys > are fully specific, it can be useful to group policies by their semantics. > > Target - > framework > > Proposal - > One would need two new operators, and a place to put them. > Perhaps a > header element, which could be external to the policy (thus shared by > many). > <http://www.mindswap.org/2005/services-policies/> shows how to use policy > subsumption. > -- Fabian Ritzmann Sun Microsystems, Inc. Stella Business Park Phone +358-9-525 562 96 Lars Sonckin kaari 12 Fax +358-9-525 562 52 02600 Espoo Email Fabian.Ritzmann@Sun.COM Finland
Received on Friday, 25 August 2006 16:56:01 UTC