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Subject: Re: [xacml] Issue: Hierarchical profile appears ambiguous and inconsistent
I think the current profile suffers a lot from our decision to use it for both XML/XPath based and attribute based approaches. They are distinct enough to be done separately, but we did not have enough cycles to do that. Maybe it is a good time to split and formalize the attribute -based approach a bit more - in particular remove any requirements for identifiers and any references to URI's. Daniel; On Feb 18, 2009, at 10:29 AM, Seth Proctor wrote: > >> There are many way to create hierarchical structures. If we are >> to publish anything, I think it should be the most generic one >> that does not introduce any additional concepts to the XACML (like >> naming schemes and such). > > I agree with Daniel on this point. One of the strengths of the > XACML core (in my opinion) is that it deals with a policy > processing model, not the specifics of how XACML systems interact > with the world around them. > > The idea of generic hierarchies is that a PEP should be able to > name a root, and that should result in a PDP processing multiple > requests. How that mapping happens is up to some entity outside the > scope of XACML. It seems to me like what we're really talking about > in this thread is a profile for specific mechanisms or more > detailed examples of actual implementation possibilities. I think > this kind of clarity is great to have, but should be in a separate > place from the abstract discussion of hierarchies (which I think is > also Daniel's point). I also think Erik's suggestion makes sense: > we should continue to look at these details, but move the core docs > forward separately. > > > seth
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