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Subject: [xacml] Re: [Model] Composition Use Case
> Matching of X500 Distinguished Names can not be handled via > regular expressions (case, ordering of attribute-value > assertions, handling of spaces, etc.). URL's can not be handled > via regular expressions (places where case matters versus where > it does not). Attributes that are themselves complex types (such > as certain X509 Attribute Certificate attributes) can not be > handled via regular expressions. i can't speak to the x509 attributes but i am do not see your point on regular expressions not being able to handle "case, ordering of attribute-value assertions, handling of spaces, etc." could you give me an example of two things that are expressible in xml that i could not differentiate between with something like grep? > I don't think the language syntax itself can handle the matching > rules for real-world sets of attributes. I think the language > must have a way of pointing to executables for handling the > matching. possibly, however unless you specify *precisely* how such an external application will provide the desired match as part of the specification you have effectively killed interoperability. b
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