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Re: RDF Issue rdfms-xml-literal-namespaces

From: Stefan Kokkelink <stefan.Kokkelink@gmx.de>
Date: Wed, 3 Apr 2002 10:18:05 +0200 (MEST)
To: Brian McBride <bwm@hplb.hpl.hp.com>
Cc: skokkeli@mathematik.uni-osnabrueck.de, www-rdf-comments@w3.org
Message-ID: <417.1017821885@www27.gmx.net>
Hi Brian,

I agree on this resolution, good work.

Best regards,
Stefan

> Stefan,
> 
> In
> 
>     
> http://lists.w3.org/Archives/Public/www-rdf-interest/2001Mar/0022.html
> 
> you raised an issue which was captured in
> 
>    http://www.w3.org/2000/03/rdf-tracking/#rdfms-xml-literal-namespaces
> 
> as
> 
> [[[
> The RDF XML syntax permits Literals which consist of XML markup. Is the 
> value of the literal the string of characters as they appear in the the 
> source document? If it is, then the association of namespace prefixes to 
> namespace URI's may be lost. Alternatively, an RDF processor may be 
> required to modify the XML markup as necessary to preserve the association
> 
> between namespace prefixes and namespace URI's.
> 
> ]]]
> 
> As recorded in
> 
>    http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2002Mar/0235.html
> 
> the RDFCore WG has resolved:
> 
>   o the exact form of the string value corresponding to any given XML 
> Literal within RDF/XML is implementation dependent.
> 
>   o the string value is well-balanced XML
> 
>   o taking the exclusive canonicalization of both the original XML Literal
> 
> in its containing document, and the string value of the literal produce
> the 
> same character string. (this will be used as the basis for test cases)
> 
>   o the canonicalization above is without comments i.e. CONFORMANCE should
> 
> be tested by canonicalizing without comments; comments may be included in 
> the string representation of a literal
> 
>   o this issue is closed
> 
>   o to raise a comment on the XQuery/XPath 2.0 data model that it does not
> 
> adequately address the handling of namespace prefixes appearing in 
> attribute values.
> 
> Roughly speaking, this means that:
> 
>    o an rdf parser should add relevant namespace declarations to the
> string 
> representation of the literal
> 
>    o it may not spot namespaces that are used only in attribute values -
> an 
> issue that we will raise with the appropriate WG
> 
>    o it is implementation dependent whether XML comments are retained in 
> the string or not
> 
>    o the xml canonicalization of the strings produced by all 
> implementations should be equal - which is how we test for conformance
> 
> Please could you respond to this message, copying www-rdf-comments@w3.org 
> indicating whether this is an acceptable resolution of this issue.
> 
> Brian McBride
> RDFCore co-chair
> 

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Received on Wednesday, 3 April 2002 03:18:42 GMT

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