[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: RDDL/RDF - no RDF tax?

• To: Mike Champion <mc@x...>
• Subject: Re: RDDL/RDF - no RDF tax?
• From: Uche Ogbuji <uche.ogbuji@f...>
• Date: Sun, 17 Nov 2002 13:54:37 -0700
• Cc: xml-dev@l...
• In-reply-to: Message from Mike Champion <mc@x...> of "Sun, 17 Nov 2002 11:41:24 EST." <oprf0lzak6ezizxn@localhost>
• Sender: uche.ogbuji@f...

> On Sun, 17 Nov 2002 11:00:40 -0500, Jonathan Borden <jonathan@o...> 
>  wrote:
> 
> >
> > <rddl:resource ID="XSD">
> > <rddl:title>XML Schema</rddl:title>
> > <rddl:nature resource="http://www.w3.org/2001/XMLSchema"/>
> > <rddl:purpose
> > resource="http://www.rddl.org/purposes#schema-validation"/>
> > <rddl:related resource="http://example.org/L.xsd"/>
> > <rddl:prose>
> > <p>An XML Schema for the L language .</p>
> > </rddl:prose>
> > </rddl:resource>
> >
> > hopefully the above XML is self explanatory -- in which case this is 
> > human
> > readable! I think it is more readable than the XLink version.
> 
> 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? :-)
> 
> Would a "native" RDF processor understand the assertions in there, or would
> a RDDL->RDF filter be needed?

You doubt Jonathan?

All I had to do was add a namespace:

uogbuji@malatesta:~$ cat rddl.rdf 
<rddl:resource ID="XSD" xmlns:rddl="http://www.rddl.org/RDDL2">
    <rddl:title>XML Schema</rddl:title>
    <rddl:nature resource="http://www.w3.org/2001/XMLSchema"/>
    <rddl:purpose
resource="http://www.rddl.org/purposes#schema-validation"/>
    <rddl:related resource="http://example.org/L.xsd"/>
    <rddl:prose>
        <p>An XML Schema for the L language .</p>
    </rddl:prose>
</rddl:resource>
uogbuji@malatesta:~$ 4rdf rddl.rdf
The following is a list of remaining tuples, each in the form "subject, 
predicate, object".  If a resource has an rdfs:label, it is presented with 
this label between angle brackets.
[
("ANON-1", "<rdf:type>", "http://www.rddl.org/RDDL2resource"),
("ANON-1", "http://www.rddl.org/RDDL2title", "XML Schema"),
("ANON-1", "http://www.rddl.org/RDDL2nature", "http://www.w3.org/2001/XMLSchema
"),
("ANON-1", "http://www.rddl.org/RDDL2purpose", "http://www.rddl.org/purposes#sc
hema-validation"),
("ANON-1", "http://www.rddl.org/RDDL2related", "http://example.org/L.xsd"),
("ANON-2", "<rdf:type>", "file:/home/uogbuji/p"),
("ANON-1", "http://www.rddl.org/RDDL2prose", "ANON-2"),
]


Not the hint of a problem.

The "cruft" that people complain of in RDF/XML is only there for relatively 
complex situations.  For pretty simple uses such as RDDL or even HTML meta-tag 
equivalents, RDF can be as simple as you please.

Well, just one thing.  If you wish to embed RDF in other vocabs, you usually 
have to have an rdf:RDF wrapper element, but that's hardly a "tax".


-- 
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

• Follow-Ups:
  • Re: RDDL/RDF - no RDF tax?
    • From: "Jonathan Borden" <jonathan@o...>

• References:
  • Re: RDDL/RDF - no RDF tax?
    • From: Mike Champion <mc@x...>

• Prev by Date: Re: RDDL/RDF - no RDF tax?
• Next by Date: Re: RDDL/RDF - no RDF tax?
• Previous by thread: Re: RDDL/RDF - no RDF tax?
• Next by thread: Re: RDDL/RDF - no RDF tax?
• Index(es):
  • Date
  • Thread