RE: Property, rel comparison

[Eran Hammer-Lahav <eran@hueniverse.com>]

Also, <Subject> comparison must be application specific. XRD should not decide if:

http://example.com/resource
http://example.com/RESOURCE
http://example.com:80/resource

identify the same resource or different resources. I am not sure if we need to explicitly say that if we add text about comparing the other values.

EHL

> -----Original Message-----
> From: Eran Hammer-Lahav [mailto:eran@hueniverse.com]
> Sent: Monday, January 25, 2010 9:05 AM
> To: xri@lists.oasis-open.org
> Subject: [xri] Property, rel comparison
> 
> The current draft does not specify how to compare rel values and Property
> type URIs. This is a problem since these are not obvious.
> 
> Relation-types comparison is defined in Web Linking [1] :
> 
>    Registered relation type names MUST conform to the reg-relation-type
>    rule, and MUST be compared character-by-character in a case-
>    insensitive fashion.
> 
>    When extension relation types are compared, they MUST be compared as
>    URIs in a case-insensitive fashion, character-by-character.  Because
>    of this, all-lowercase URIs SHOULD be used for extension relations.
> 
> I think we should incorporate this language because it might not be obvious
> to developers who are not likely to study the Web Linking spec. Since we
> have a dependency on Web Linking, we will have to wait for it to get
> published as an RFC (at least approved by the IESG), and if this changes, we
> will follow.
> 
> BTW, I have an open issue with the above text because I think "compared as
> URIs" is poorly defined (is http://example.com/rel the same as
> http://example.com:80/rel?).
> 
> As for Property type URIs, I think they must follow the same rules as the
> extension relation types.
> 
> EHL
> 
> [1] http://tools.ietf.org/html/draft-nottingham-http-link-header
> 
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