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Subject: [xacml] Re: [xacml-comment] A002
[For those not running the Conformance Tests, test A002 requires the system to retrieve an attribute value that is not supplied in the original XACML Request from the PEP. The instructions for the test are deliberately places no requirements on which attribute it is, where it is retrieved from, how it is retrieved, etc.] The intent of test A002 is to exercise one of the primary advantages of XACML: the ability to have the PDP side of the system obtain attributes that are not necessarily supplied by the PEP. Section 7.9.2 covers this, although we were so careful not to specify a particular implementation that perhaps we were not specific enough. It is the "context handler" that is responsible for supplying attribute values, and it is the existence of a context handler that is independent of any physical XML Request document that is being tested in A002. If we do not have a test of this kind, implementors can limit their capabilities to parsing an XML Request document using standard XML tools and retrieving attributes from that. We have specifically stated that the Context is NOT to be considered as a physical XML document (although it is certainly based on some sort of document received from the PDP), and that attribute values are obtained from the context handler. I am posting this to the XACML list for discussion. Do we want to require the functionality required by Conformance Test A001? Anne Anderson "John Merrells" <merrells@jiffysoftware.com> wrote: >Date: Tue, 26 Nov 2002 19:58:52 -0800 > >Which part of the specification is this test testing? I read 7.9.2, but it >says that if the PDP can't find an attribute in the context then it's to >return Indeterminate. Also, in Figure 1 the PDP is shown reading >policies from a PAP and returning responces to the context handler, >but not retrieving attributes from anywhere. > >John > > >---------------------------------------------------------------- >To subscribe or unsubscribe from this elist use the subscription >manager: <http://lists.oasis-open.org/ob/adm.pl> Anne ------ Anne Anderson Anne.Anderson@Sun.COM Sun Microsystems Laboratories Burlington, MA 781-442-0928
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