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:]
> Sent: Friday, January 13, 2006 1:42 PM
> To: Steven Churchill;
> 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:]
> > Sent: Thursday, January 12, 2006 11:44 PM
> > To:
> > 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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