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Subject: RE: [security-services] Last call issues with schema
> I'm not sure why we wouldn't use xsd:anyURI instead of > xsd:NCName for saml:IDReferenceType. If we want to refer > across documents don't we need a URI? Hmm, I have a feeling that's problematic. It doesn't seem very well defined to me in our usual context. For something like InResponseTo, what would the URI be? It shouldn't be a fragment ID ("#foo") since that should be understood to refer to the same document. So there has to be URI in front of that, but what could you use short of a URN that we gave a well-defined interpretation to? Obviously it could be a URI in some contexts, but it seems like we'd have to do real work to address all the potential issues. I'm not sure it's any more well-defined in WSS, frankly, despite the hand-wavy "goodness" of using a familiar syntax to point at an ID in another XML document. In the context of XLink and document-land, this idea works well, but I think it falls apart in protocol development. -- Scott
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