Re: Some RDFa 1.1 Core edge cases that we need to clarify

Erg... or the last.  CSS-style cascading rules.  That might make more sense.

On 10/25/2010 10:50 AM, Shane McCarron wrote:
> Yeah.... that's just ugly.  I think we should say the terms are put in 
> the list in the order they are declared, and that it is the FIRST 
> case-insensitive match that counts.
>
> On 10/25/2010 10:45 AM, Toby Inkster wrote:
>> On Mon, 25 Oct 2010 13:15:44 +0100
>> Martin McEvoy<martin@weborganics.co.uk>  wrote:
>>
>>> The second vocab attribute "2#" would resolve to
>>> http://example.com/base2#which may be wrong?
>> No, that's not how base works. Check this in a browser:
>>
>> <html>
>> <base href="http://example.com/base">
>> <a href="2#">hover over this link, look at status bar</a>
>> </html>
>>
>>> I think @vocab should always be an absolute URI (easier to parse an
>>> less complicated)
>> We already need to support relative links in @about, @resource, @src
>> and @href, so supporting relative URIs in @vocab is not too much to ask
>> from a parser.
>>
>> Actually, re-reading the RDFa Core 1.1 spec, it seems we already allow
>> @vocab to be relative (or at least we don't seem to forbid it
>> anywhere). If so, then it seems my concerns are unwarranted, and
>> vocab="2#" is well-defined.
>>
>>> I would Imagine that your second example would be dropped from the
>>> graph because RDFa is case sensitive and you haven't included the
>>> uppercase values in the profile, AGENT, agent and Agent are not the
>>> same in the RDF world.
>> Not so: profile terms are checked case-sensitively, falling back to a
>> case-insensitive check. The URIs they expand to are of course
>> case-sensitive. The case was similar under RDFa 1.0 too: rel="next",
>> rel="NEXT" and rel="nExT" each were expanded to the case-sensitive URI
>> <http://www.w3.org/1999/xhtml/vocab#next>.
>>
>> The problem here is that "AGENT" doesn't match either "Agent" or "agent"
>> case-sensitively, and when the fallback match is attempted, it matches
>> both equally.
>>
>

-- 
Shane P. McCarron                          Phone: +1 763 786-8160 x120
Managing Director                            Fax: +1 763 786-8180
ApTest Minnesota                            Inet: shane@aptest.com

Received on Monday, 25 October 2010 15:52:54 UTC