- From: Danny Ayers <danny.ayers@gmail.com>
- Date: Sat, 29 Jan 2005 12:27:11 +0100
- To: www-rdf-interest@w3.org, atom-owl@googlegroups.com
- Cc: djpowell@djpowell.net
---------- Forwarded message ---------- From: David Powell <djpowell@djpowell.net> Date: Fri, 28 Jan 2005 21:27:11 +0000 Subject: Proof-of-concept RDF mapping for Atom To: Atom Syntax <atom-syntax@imc.org> I've put together an XSLT stylesheet to map Atom to RDF/XML. It is just as a proof of concept to see if it is possible. I think it handles everything except for xml:lang - I'm not sure what's happening with xml:lang at the moment - but it should be possible to add it in a similar way to xml:base. I don't think using an XSLT processor followed by an RDF/XML parser would be much fun in practise - a SAX based convertor would be much simpler. The RDF vocabulary was just constructed ad-hoc - like I said, it is just a proof of concept. It uses a separate namespace to Atom and defines some new terms, which solves any problems with non-unique attributes. Here are the main features: * Implements draft-04 with PaceExtensionConstruct. Doesn't handle xml:lang at the moment, because I think we need to clarify that a bit. * Preserves Structured Extension Constructs as XML Literals, for round-tripping. * Preserves xml:base context for Text, Content, and Structured Extension constructs. * Handles author defaulting. * Resolves URI references using xml:base There are some more comments at the top of the file. You need <http://djpowell.net/tmp/atom2rdf.zip> - which contains: atom2rdf.xsl - the transform urires.xsl - URIRef resolver used by the transformer example.xml - an example feed You can run the transform using Xalan <http://xml.apache.org/xerces2-j/> using: java -jar xalan.jar -IN example.xml -XSL atom2rdf.xsl -OUT rdf.xml Part of the implementation is an XSLT based URIRef resolver - you can try that here in your browser: <http://djpowell.net/tmp/uritest.xml> -- Dave -- http://dannyayers.com
Received on Saturday, 29 January 2005 11:27:12 UTC