Re: 'no prefix' mapping vs. @vocab

(I realized I did not send this to the list)

Basically, ignore the no prefix mapping.  It is NOT used by RDFa.  It is 
there for other specifications that might use CURIEs.  In particular, 
since you are writing a document to help people understand RDFa, talking 
about something that is expressly NOT part of RDFa seems like it would 
only increase confusion.  IMHO.

On 4/3/2012 12:10 AM, Grant Robertson wrote:
> In RDFa Core 1.1, Section 6, fourth paragraph: You say, "It's also possible
> to omit both the prefix and the colon, and so create a CURIE that contains
> just a reference which makes use of the 'no prefix' mapping. This
> specification does not define a 'no prefix' mapping. RDFa Host Languages
> must not define a 'no prefix' mapping."
> A) Would an example of this be something like  about="myNoPrefixCURIE"  ?
> B) How is "myNoPrefixCURIE" any different from a "term" as defined in
> section 7.4.3?
> B.1) Is it only considered a "term" if there is a matching entry in either a
> "local default vocabulary" or a "local term mapping"?
> B.2) Or, does the word "term" merely refer to a particular combination of
> allowed characters while the phrase "no prefix" refers more specifically to
> a meaning ascribed to that same combination of characters when used within
> an attribute?
> C) Isn't a "no prefix mapping" exactly the same as using the @vocab
> attribute - which then allows one to use just a "term" without a prefix or
> colon as the value for many RDFa attributes - which may be predefined by a
> host language according to the following sentence in Section 7.2: "The term
> mappings, a list of terms and their associated IRIs. This specification does
> not define an initial list. Host Languages may define an initial list."
> Thus, contradicting your statement, in Section 6, about 'no prefix' mappings
> not being allowed.
> OK, my brain hurts now. I'm going to bed.

Shane McCarron
Managing Director, Applied Testing and Technology, Inc.
+1 763 786 8160 x120

Received on Tuesday, 3 April 2012 19:43:01 UTC