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Subject: Issue CORE-9: Wildcarding and Extensibility in the SAML Schemas

This issue is still open.  The latest version of the relevant position 
paper is here:


I'd like to be able to close this out by next Tuesday.  I believe this 
is what remains to be done/decided; only the last item is potentially 
worth discussing, I believe:

- The paper offered a few options around a "xs:anyType vs. <xs:any>" 
strategy.  I think that, in practice, we have selected option 3 (use 
either one, depending on the circumstances), though we haven't fully 
articulated the criteria for choosing in each circumstance.  I think 
Scott wrote up a brief proposal for the criteria, but can't seem to find 
it right now.  I would be willing to consider this closed.

- The paper proposed a recommendation around "restrained globalness", 
which in practice we follow, but I seem to recall that we rejected the 
idea of adding prose to disallow reuse of elements other than assertions 
etc.  I would be willing to consider this closed.

- The recommendation around "attribute clarity" has been superseded 
quite dramatically by our earlier reworking of the attribute structure. 
  The "semantic vs. syntactic clarity" recommendation has also been 
superseded.  Same for the "namespace terminology" recommendation.  So I 
would be willing to consider these closed.

- Finally, there's an open question posed about the "must ignore" 
paradigm.  We have refined, somewhat, our understanding of our goals 
around extension usage.  But do we need/want to add something explicit 
around "must ignore" semantics?

Eve Maler                                        +1 781 442 3190
Sun Microsystems                            cell +1 781 354 9441
Web Products, Technologies, and Standards    eve.maler @ sun.com

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