RE: [xri] Bracketing Refs [Authority Resolution]

["Steven Churchill" <steven.churchill@xdi.org>]

Gabe,

My answer is that it provides a human and machine readable way to negotiate
a nested Ref resolution hierarchy. (It seems that the natural approach to
represent a hierarchy in XML is hierarchically.)

But I am not intimately familiar with the proposal in CD-01. Perhaps
Drummond can add more.

~ Steve


> -----Original Message-----
> From: Wachob, Gabe [mailto:gwachob@visa.com] 
> Sent: Friday, January 13, 2006 1:42 PM
> To: Steven Churchill; xri@lists.oasis-open.org
> Subject: RE: [xri] Bracketing Refs [Authority Resolution]
> 
> Before you respond to my other email, could you spell out 
> exactly what the motivation for this proposal is? 
> Specifically what gap in CD-01 are you addressing?
> 
> 	-Gabe 
> 
> > -----Original Message-----
> > From: Steven Churchill [mailto:steven.churchill@xdi.org]
> > Sent: Thursday, January 12, 2006 11:44 PM
> > To: xri@lists.oasis-open.org
> > Subject: [xri] Bracketing Refs [Authority Resolution]
> > 
> > 
> > 
> > This proposes a bracketing scheme for outputting Refs during the 
> > authority resolution phase. This provides a human and 
> machine readable 
> > way to negotiate a nested Ref resolution hierarchy.
> > 
> > <XRDS>
> >     
> >     <XRD-A /> 
> >     <RefRes>
> >         <XRD-E />
> > 	  <RefRes>
> >             <XRD-H />
> >     	  </RefRes>
> >         <XRD-F />
> >         <XRD-G />
> >     </RefRes>
> >     <XRD-B />    
> >     <XRD-C />
> >     <RefRes>
> >         <XRD-I />
> >     </RefRes>
> >     <XRD-D />
> > 
> > </XRDS>
> > 
> > 
> > The <RefRes> element is used to bracket the XRDs necessary 
> to resolve 
> > a Ref.
> > The <RefRes> element MUST appear between two <XRD> elements. 
> > (It would never
> > fall at the beginning or end, and two <RefRes> elements would never 
> > appear
> > together.)
> > 
> > The final <XRD> in the <RefRes> is that used for the subsegment 
> > resolution of the <XRD> that follows the <RefRes>. 
> Therefore, in the 
> > example above, the subsegment resolution XRD chain is:
> > 
> >     G, B, I, D
> > 
> > Note that, since the <RefRes> "replaces" the preceding <XRD> from a 
> > subsegment resolution standpoint, the number of (top-level) XRDs in 
> > the <XRDS> is always equal to the number of authority subsegments.
> > 
> > ~ Steve
> > 
> > 
> > 
> > 
> > 
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