Re: non-prefixed @rel

I am not sure I understand the problem around @property.

http://www.w3.org/MarkUp/2007/ED-rdfa-syntax-20070921/#sec_9.2.5.

lists a number of predefined values for @property (description,
generator, keywords, references, robots, title) and a _different_ set of
predefined values for @rel/@rev (alternate, appendix, bookmarks, etc).
Based on that, my understanding would be that the treatment of @property
on the one hand, and @rel/@rev on the other is _exactly_ the same (ie,
(a)-(d) below), except that the set of reserved values, as referred to
in (a), is different (and the two sets are defined in the syntax document).

What do I miss?

Ivan

Ben Adida wrote:
> Shane McCarron wrote:
>> I think that instanceof has NO non-scoped values.  It takes curies, and
>> there are no XHTML-defined nor RDFa-Syntax defined values that would be
>> in the xhtml/vocab# space.
> 
> Right, I should be clear that I don't mean @instanceof="next" to yield
> xh:next, that's obviously not a good idea.
> 
> It's less clear what to do with @property="next", though since we are
> pre-processing for specific backwards-compatible values of @rel and
> @rev, I think we can safely say that @property="next" also doesn't
> generate anything.
> 
> So I'll restate the proposal accordingly:
> 
> =========
> rel="X"
> 
>   (a) if X is a XHTML 1.1 reserved value, it is re-written in a
> pre-processing stage as rel="xh:X", where xh maps to
> http://www.w3.org/1999/xhtml/vocab#.
> 
>   (b) if X is a prefixed value, it is processed normally.
> 
>   (c) if X is a non-prefixed, non-reserved value, it is ignored by any
> baseline RDFa parser, though other conformant parsers may choose to
> generate a triple *outside* of the default graph, as per [RDFa Parser
> Conformance].
> 
> The same rules apply to each value in a space-separated set of values for X.
> 
> The same rules apply to @rev, which has the same backwards compatibility
> issues as @rel.
> 
> For @property and @instanceof, only rules (b) and (c) apply.
> =========
> 
> -Ben
> 
> 

-- 

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
PGP Key: http://www.ivan-herman.net/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf