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Re: Rethinking ISSUE-12 with lang datatypes

From: Andy Seaborne <andy.seaborne@epimorphics.com>
Date: Fri, 27 May 2011 22:11:21 +0100
Message-ID: <4DE01379.2020405@epimorphics.com>
To: public-rdf-wg@w3.org


On 27/05/11 21:54, Pat Hayes wrote:
>
> 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.

If you mean by that the IRI rdf:PlainLiteral would rapidly become an 
anachronism then, +1

We also don't get the special casing of "MUST NOT" be used.

A new IRI for a specific concept - the class of all plain literals (with 
or without language tag).

The SKOS example is one where it is needed.

	Andy

>
> 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 21:11:51 GMT

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