RE: Choreography and the Semantic Web

> -----Original Message-----
> From: Mark Baker [mailto:[email protected]]
> Sent: Sunday, August 11, 2002 3:12 PM
> To: Christopher B Ferris
> Cc: [email protected]
> Subject: Re: Choreography and the Semantic Web
> 
> 

> > <cbf>
> > So, what I read into this is you are saying "throw out WSDL and SOAP
> > and use RDF instead". What's wrong with replacing the 
> application/rdf+xml
> > you suggest above with application/soap+xml and/or 
> application/wsdl+xml?
> > </cbf>
> 
> SOAP and WSDL do very different things than RDF does.  SOAP and WSDL
> can't be used to express the state of any resource; you can't use them
> to say "the temperature is 33 degress celsius", for example.

Uhh, you certainly can have a SOAP/WSDL web service that returns the current
temperature at some location, and have it return with a SOAP message that
says "the termperature is 33 degrees celsius."  The difference is that the
SOAP/WSDL does this by reference to hard-coded semantics ... the designers,
producers, and consumers of the service "just know" what temperature,
degrees, celsius, etc. "mean" and this is reflected in program code
Presumably RDF could reference or encode an ontology that knows what these
terms mean, and they could be extended or tweaked without re-writing any
program code.