I am really hesitant to abandon backwards compatibility with openID mostly.
Not all openID RPs are going to upgrade to XRD overnight if at all.
Existing parsers are looking for Type and Service.
I can see making Type deprecated and allowing both Type and Rel during the transition.
Service is harder to deal with unless we do a similar thing and perhaps allow a mix of SEPs
Like:
<XRD>
<Service>
<Type>http://example.com/relationship</Type>
<MediaType>application/xml</MediaType>
<URI>http://example.org/document</URI>
</Service>
<Link>
<Rel>http://example.com/relationship</Type>
<MediaType>application/xml</MediaType>
<URI>http://example.org/document</URI>
</Link>
</XRD>
On the other hand as Services directly encode API endpoints should we keep them for such and use <Link> to indicate that the URI is abstract and is something that needs to be resolved to get the meta-data for the Link?
I don't think abandoning some sort of backwards compatibility is a good idea.
=jbradley
On 25-Nov-08, at 12:17 PM, Drummond Reed wrote:
Ever since Eran explained this at the IIW and XRI TC F2F sessions two weeks
ago, I've been wondering this same thing. Given that XRDS/XRD has probably
penetrated <1% of its eventual installed user base if successful, now's the
time to make this change if ever.
I find the direct mapping of semantics compelling, especially as XRD spreads
out to a much larger audience of developers.
Question: would <Type> become <Rel> under the parent XRD element as well, or
would that remain <Type>?
=Drummond
-----Original Message-----
From: Eran Hammer-Lahav [mailto:]
Sent: Tuesday, November 25, 2008 12:00 PM
To:
Subject: [xri] Aligning XRD with Link (Header/Element)
As currently proposed:
<XRD>
<Service>
<Type>http://example.com/relationship</Type>
<MediaType>application/xml</MediaType>
<URI>http://example.org/document</URI>
</Service>
</XRD>
Is semantically equivalent to:
HTTP Header:
Link: <http://example.org/document>;
rel="http://example.com/relationship";
type="application/xml";
HTML Element:
<Link rel="http://example.com/relationship"
href="http://example.org/document" type="application/xml" />
Given that Link(s) are becoming the prominent mechanism for metadata on
the
web, I think there is great value in lining up XRD with that trend. So...
I would like us to seriously consider renaming:
Service --> Link
Type --> Rel
MediaType --> (unchanged)
URI --> (unchanged)
EHL
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