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Subject: Re: [xacml-users] AttributeSelector usage

Thanks Seth!

My reading of the spec indicated that the spec resitricted it - hence
my initial set of emails saying this seemed counter intutive!


On Fri, 11 Mar 2005 00:44:11 -0500, seth proctor <Seth.Proctor@sun.com> wrote:
> Prakash Yamuna wrote:
> > [...]
> >
> > Is this truly a spec restriction (or a bug in the implementation I am using)?
> Now wait a minute! :)
> My reading of the spec is that, indeed, AttributeSelectors must convert
> the nodes they select, so no, you cannot select an element and use it
> (and its children) to represent some new datatype you've defined. Do I
> think this is limiting? Yes. I don't think it's too terrible, since you
> can always select on individual sub-elements, but I don't see why the
> spec needed to include this restriction.
> Now, this said, I could be wrong. It would not be the first time on this
> topic, since the spec has been remarkably incomplete or misleading in
> the past when it comes to the AttributeSelector element. This is part of
> why I implemented the XPath handling of AttributeSelector in a separate
> module of my code. It makes it easy to include/exclude from a
> deployment, and it makes it much easier to replace with alternate
> implementations if needed. If you want to try implementing the support
> you're looking for, I'd be happy to help you figure this out, but I
> don't think it's teechnically compliant with the spec.
> seth

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