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Re: XMLLiterals and language

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Tue, 18 Jan 2005 11:12:39 +0000
Message-ID: <41ECEF27.3060404@hplb.hpl.hp.com>
To: Reto Bachmann-Gmuer <reto@gmuer.ch>
Cc: www-rdf-interest@w3.org, www-international@w3.org

Reto Bachmann-Gmuer wrote:
> Jeremy Carroll wrote:
> 
>> According to the recs the language in this one is ignored. If you want 
>> the language tag (which you should) you have to put it explicitly 
>> inside the XMLLiteral e.g.
>>
>>
>> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>>   xmlns="....xhtml"
>>   xmlns:dc="http://purl.org/dc/elements/1.1/">
>>   <rdf:Description rdf:about="http://www.w3.org/">
>>     <dc:title  rdf:parseType="Literal" xml:lang="en"><span
>> xml:lang="en">World Wide Web
>>  Consortium</span></dc:title>
>>   </rdf:Description>
>>  </rdf:RDF>
> 
> 
> After finding the current recs, I think I understood but don't like it.
> 
> My usecase is an application (KnoBot [1]) delivering rdf on http 
> requests, it honours the accept-language header on a per literal basis, 
> literals in a language that is not in the accept-language header are not 
> ignored, the others are sorted according to the user preferences. Now I 
> don't like the idea to xml-parse every literal.
> 
> Then I would have assumed a semantic difference between the language of 
> the literal, and the language of the elements in the xhtml.
> 
> <ex:Book>
>    <dc:title xml:lang="de">Carpe diem</dc:title>
> </ex:Book>
> 
> I would have thought that this means that the title of the German 
> (translation of a) book is "Carpe diem". Similarly to quotes in foreign 
> language within a document, if xml:lang would be legal with XMLLiterals 
> I would have understood the following to express that "Carpe diem" are 
> Latin words expressing the German title of the book.
> 
> <ex:Book>
>    <dc:title xml:lang="de" rdf:parseType="Literal"><span
> xml:lang="la">Carpe diem</span></dc:title>
> </ex:Book>
> 
> 

I suggest the following markup for that example:
<ex:Book>
     <dc:title rdf:parseType="Literal"><span xml:lang="de"><span
  xml:lang="la">Carpe diem</span></span></dc:title>
</ex:Book>


but I'm not wholly up on the conventions for using lang tags to indicate 
one language quote inside another ... (cc-ing to www-international for a 
further opinion).
I think if you want to know about the language of a piece of XHTML you 
have to process it as XHTML, hmmmm, I suppose for an XHTML page there is 
often metadata about the page such as the accept-language headers which 
give some sort of overview.



Jeremy
Received on Tuesday, 18 January 2005 11:12:40 GMT

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