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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: RDDL/RDF - no RDF tax?
 > Mike Champion wrote: > > > That's very human readable ... but RDF-challenged as I am, I don't > > understand how it uses RDF. Where is all the cruft that people complain > > about? :-) > > As I've said many times RDF doesn't *have* to be complicated, unfortunately, > RDF all too often get's way too complicated and that's where sensible folks > get thrown off the boat. > > that XML makes the following assertions: > > <#foo> rdf:type rddl:resource . > <#foo> rddl:nature <http://example.org/nature> . > <#foo> rddl:nature <http://example.org/purpose> . > <#foo> rddl:nature <http://example.org/L.dtd> . > <#foo> rddl:prose "<p>A description of the 'L' language>"^^rdf:XMLLiteral . > > where that last one is the new typed literal syntax where a string literal > is separated from a type QName or URI by "^^". > > > > > Would a "native" RDF processor understand the assertions in there, or > would > > a RDDL->RDF filter be needed? > > > > A processor would only need to know where to look in the RDDL document for > the XML to be parsed as RDF. I've suggested an attribute on the top element: > > <html rddl:annotation-ns="http://www.w3.org/1999/xhtml"> > > which would tell a parser to ignore elements in the XHTML namespace, and > start parsing as RDF elements in any other namespace e.g. <rddl:resource>. > > An *actual* RDF document would look like: > > <rdf:RDF> > <rddl:resource>... > <rddl:resource>... > </rdf:RDF> Wow. You took a strange left turn on me. The "<rdf:RDF>" wrapper is optional in the RDF M&S 1.0 grammar, so a compliant RDF parser can look at your rddl:resource as a simple typed node that defines an object. So the version you posted here is indeed "real" RDF. -- Uche Ogbuji Fourthought, Inc. http://uche.ogbuji.net http://4Suite.org http://fourthought.com Python&XML column: 2. Introducing PyXML - http://www.xml.com/pub/a/2002/09/25/p y.html The Past, Present and Future of Web Services 1 - http://www.webservices.org/ind ex.php/article/articleview/663/1/24/ The Past, Present and Future of Web Services 2 - 'http://www.webservices.org/in dex.php/article/articleview/679/1/24/ Serenity through markup - http://adtmag.com/article.asp?id=6807 Tip: Using generators for XML processing - http://www-106.ibm.com/developerwork s/xml/library/x-tipgenr.html 
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