RE: [xacml-users] AttributeSelector usage

>The question is "why we need ResourceContent element at all i.e. If we
can >carry attribute values inside the request like  given above."

For simplicity and for historical purposes I guess.   There is no
requirement that the request is instantiated as an XML document.
ResourceContent part is something that you actually need to instantiate
as an XML document and feed it into your path processor.

D;