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Subject: [xacml-comment] When to obtain attributes from the PIP.
First off, thanks for all the help that I've received on this list. On to my question-> In our implementation we're finding it necessary to obtain attributes about the Subject and hence are going to implement a PIP. I'm having some trouble trying to figure out at which point the attributes need to be obtained. I see that this was covered briefly http://lists.oasis-open.org/archives/xacml/200210/msg00035.html and http://lists.oasis-open.org/archives/xacml/200210/msg00035.html but possibly never resolved. I noticed that Anne proposed a section 7.x Request Context but this doesn't seem to have been included in the spec. It boils down to this: at which point is the PDP required to request additional/missing attributes from the PIP? Are they obtained before the policy is evaluated or as I believe, when required during function evaluation? Thanks. Wes
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