Re: problem in "CURIE" XML Schema datatype definition

Mike,

I let Shane answer and handle that. But... I guess we should have told you about a slight change in the CURIE definition that was decided last week:

prefix      ::=   NCName
reference   ::=   ( ipath-absolute / ipath-rootless / ipath-empty ) 
                     [ "?" iquery ] [ "#" ifragment ] (as defined in [RFC3987])

curie       ::=   [ [ prefix ] ':' ] reference
safe_curie  ::=   '[' [ [ prefix ] ':' ] reference ']'

The point is that reference is more liberal as it was because it allows for the ':' character (needed because Facebook already uses such CURIES) but it disallows a leading '//' character pair.

Thanks

Ivan

On Jan 31, 2012, at 13:17 , Michael[tm] Smith wrote:

> Looking in the RDFa Core 1.1 spec at the (non-normative) "XML Schema
> Definition" section:
> 
>  http://www.w3.org/TR/rdfa-core/#xml-schema-definition
> 
> ...I find:
> 
>  <xs:simpleType name="CURIE">
>      <xs:restriction base="xs:string">
>          <xs:pattern value="(([\i-[:]][\c-[:]]*)?:)?.+" />
>          <xs:minLength value="1"/>
>      </xs:restriction>
>  </xs:simpleType> 
> 
> It seems that pattern should instead be:
> 
>  (([\i-[:]][\c-[:]]*)?:)?[^\s]+
> 
> Right?
> 
> Because that's the "reference" part of the CURIE, and the spec prose of the
> CURIE Syntax Definition section defines that as being irelative-ref:
> 
>  http://www.w3.org/TR/rdfa-core/#s_curies
> 
> ...and irelative-ref can't contain whitespace.
> 
>  --Mike
> 
> P.S.  Same for "SafeCURIE" datatype definition.
> 
> -- 
> Michael[tm] Smith
> http://people.w3.org/mike/+
> 


----
Ivan Herman, W3C Semantic Web Activity Lead
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