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

Re: Issue with Jena/sparql.org and XML Literals?

From: Ivan Herman <ivan@w3.org>
Date: Wed, 11 Jun 2008 17:37:06 +0200
Message-ID: <484FF122.6070804@w3.org>
To: Shane McCarron <shane@aptest.com>
CC: Manu Sporny <msporny@digitalbazaar.com>, "Seaborne, Andy" <andy.seaborne@hp.com>, RDFa mailing list <public-rdf-in-xhtml-tf@w3.org>, Dave Beckett <dave@dajobe.org>
Great! So we have yet another implementation. And we will have covered 
C, Perl, Ruby, Javascript, Python... (plus some other languages that 
redland interfaces to).

Cobol or Ada anyone?:-)


Shane McCarron wrote:
> FWIW, I ran into this issue with my implementation as well...
> I have done a DOM based implementation in Perl.  It works well, and 
> currently passes all tests except 100-103.  Once Manu's most recent 
> changes are integrated I am going
> to make a small change to my implementation and then it should pass all 
> the tests.
> My plan is to bundle up my impl as a Perl CPAN package that will (only) 
> generate ntriples. It is "pure perl" in that it requires no C language 
> extensions.  As such, it is portable to all platforms that support 
> Perl.  Could be useful for some.
> Ivan Herman wrote:
>> Manu Sporny wrote:
>>> Seaborne, Andy wrote:
>>>> It is possible to get non-canonicalized XML literals into the data 
>>>> by using datatype XMLLiteral even in RDF/XML.
>>> So this means that @datatype and @parseType don't do the same thing when
>>> dealing with XML Literal data.
>>> The string in the element containing @datatype isn't modified at all.
>>> The string in the element containing @parseType IS modified via XML
>>> Exclusive Canonicalization.
>> And as I commented before, I wonder whether this is not a bug in the 
>> RDF/XML spec. However, this group should not spend too much time on an 
>> issue that is not for this group to solve...
>>> Ivan, the easiest thing to do at this point is for you to NOT change
>>> your implementation and I'll just write the SPARQL to match what your
>>> implementation generates.
>> Yes, that is fine.
>>> Although, in light of this new discovery, it makes the learning curve
>>> even steeper for XML Literals.
>> :-(
>> Ivan
>>> -- manu


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 Wednesday, 11 June 2008 15:37:33 UTC

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