W3C home > Mailing lists > Public > public-rdf-in-xhtml-tf@w3.org > February 2008

Re: extra comments on test cases

From: Ivan Herman <ivan@w3.org>
Date: Thu, 07 Feb 2008 19:32:28 +0100
Message-ID: <47AB4EBC.20807@w3.org>
To: Ben Adida <ben@adida.net>
CC: RDFa <public-rdf-in-xhtml-tf@w3.org>

Ben Adida wrote:
> 88: I'm not sure about this one: I thought that about="[_:]" would 
> generate a *new* bnode since it's not named, thus yielding two bnodes 
> here, since it's used twice.
> <http://www.example.org/#somebody>
>    foaf:knows [a foaf:Person], [foaf:name "Dan Brickely"] .
> If you used about="[_:a]" both times, meaning you actually gave it the 
> same bnode identifier, then yes that would mean one bnode in my mind. 
> Thoughts?

Well... that has been a discussion between Mark and me. Mark can make 
the argument better than I can... but I think the argument says that if 
you do not have a local name, then a CURIE means, essentially, the 
prefix part. That is why it is the same BNode.

My argument was a bit different, namely that the CURIE spec is 'mapped' 
against the usage of BNode anyway, in the sense that we give an extra 
interpretation to what _:XXX means (ie, that it is a BNode), so we have 
the freedom to define what _: means.

Either way: this must be decided. So it _is_ a good test:-) because it 
forces us to make a decision in one way or the other:-)


> -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

Received on Thursday, 7 February 2008 18:32:27 UTC

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