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Re: Lang Tag IRI

From: Henry Story <henry.story@bblfish.net>
Date: Wed, 8 Feb 2012 20:15:37 +0100
Message-Id: <F37DF02F-E19F-44B5-A428-03A7CAA146BE@bblfish.net>
To: public-rdf-comments@w3.org
Ah sorry, I misread what the current 1.1 spec says.

I thought it said that "langString" was something one could replace with language tags, so that

"hello"@en == "hello"^^<http://www.w3.org/1999/02/22-rdf-syntax-ns#en>

Which would have simplified the language model.


On 6 Feb 2012, at 14:08, Henry Story wrote:

> In your latest draft  you have a lang tag iri be the same as
>    http://www.w3.org/1999/02/22-rdf-syntax-ns#langString
> [[
> A language-tagged string is any literal whose datatype IRI is equal to http://www.w3.org/1999/02/22-rdf-syntax-ns#langString. In addition tolexical form and datatype IRI, a language-tagged string also has:
> 	 a non-empty language tag as defined by [BCP47]. The language tag must be well-formed according to section 2.2.9 of [BCP47], and must be normalized to lowercase.
> ]]
> This is great, as it simplifies the model a lot. Now we can have just one simple
> notion of a literal, with different notations.
> But perhaps it would be better to use a different URI, one dedicated completely to
> language tags. Supposing it were for example
>  http://www.w3.org/1999/02/22-rdf-syntax-ns/lang/
> Then it would be extremely easy when looking at a URL to tell if it
> was a language tag, and so move back to the @ notation. On the other hand
> if you use the rdf syntax notation then testing urls for language
> tags is a lot more difficult, because one also has to keep track of other
> symbols defined in the rdf namespace.
>  Ie in one case the test can be
> if ( iri startsWith "http://www.w3.org/1999/02/22-rdf-syntax-ns/lang/") new Lang(iri)
> else new IRI(iri)
> In the other it has to be 
>  if (iri startsWith " http://www.w3.org/1999/02/22-rdf-syntax-ns/" && iri != rdf:type && ... )
>  else new IRI(iri)
> Also language types are bound to be evolving, so that it is not really worth hardcoding a
> full list.
> 	Henry
> Social Web Architect
> http://bblfish.net/

Social Web Architect
Received on Wednesday, 8 February 2012 20:14:31 UTC

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