W3C home > Mailing lists > Public > public-rdf-wg@w3.org > May 2011

Re: Rethinking ISSUE-12 with lang datatypes

From: Pat Hayes <phayes@ihmc.us>
Date: Fri, 27 May 2011 15:54:25 -0500
Cc: Richard Cyganiak <richard@cyganiak.de>, public-rdf-wg@w3.org
Message-Id: <D41B79F2-047C-443C-8EDD-A02880B24A22@ihmc.us>
To: Andy Seaborne <andy.seaborne@epimorphics.com>

On May 27, 2011, at 3:43 PM, Andy Seaborne wrote:

> 
> 
> On 27/05/11 19:43, Richard Cyganiak wrote:
>> On 27 May 2011, at 11:33, Andy Seaborne wrote:
>>> Why not declare a class rdf:String that is the features we want and leave rdf:PlainLiteral, with all it's datatype features that are being used, alone? (make it a subclass).
>> ...
>>> A reasonable expectation of users (whether technically right or not - people have intuitions about strings)
>>> 
>>>    skos:prefLabel rdfs:range<datatype>
>>> 
>>> is that they can write
>>> 
>>>    <s>  skos:prefLabel "foo"^^<datatype>  .
>> 
>> Huh?
>> 
>> You still can't say
>> 
>>    skos:prefLabel rdfs:range rdf:String .
>>    <s>  skos:prefLabel "foo"^^rdf:String .
>> 
>> unless you define a lexical space, and this would take us right back to the rdf:PlainLiteral "foo@en" mess.
> 
> rdf:String isn't a datatype.  It's a class only.
> Only the base of the subclass hierarchies are datatypes: rdf:LangTaggedString and xsd:string
> 
> But rdf:PlainLiteral is a datatype already, which I see as odd.

It *is* odd. BUt I would hope that with our final design in place, rdf:PlainLIteral would rapidly become an anachronism.

Pat

> 
>> Also, I don't like having both xsd:string and rdf:String with different meaning.
> 
> What name would work for you?
> My point about partial use of rdf:PlainLiteral still stands.
>> 
>> Richard
> 
> 	Andy
> 
> 

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Received on Friday, 27 May 2011 20:55:07 GMT

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