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   Re: [xml-dev] What Does SOAP/WS Do that A REST System Can't?

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On Wed, 30 Mar 2005 12:50:14 -0500, Michael Champion
<michaelc.champion@gmail.com> wrote:
>   I *think* the whole SOAP vs REST permathread  comes down to
> Resource-orientation vs Service-orientation ... complicated by the
> fact that services are also resources, and services can be invoked by
> HTTP+XML just fine.  Joe's
> http://www.xml.com/pub/a/2005/03/02/restful.html  is the clearest I've
> ever seen on what "resource orientation" means :


> In *both* REST and SOA there is a very large hairy wookie of an
> unanswered question screeching for attention: What are the semantics
> of the resources / services?  In practice this is handled explicitly
> or implicitly by human understanding in both styles. In theory both
> could be handled by some sort of formal semantic mapping a la the
> Semantic Web.

Most SOAP+WSDL implementations try to cover this territory by 
automatically creating an API for the service based on the WSDL.

Several people have taken a crack at a WSDL for REST, including
Norm Walsh: 


But having an API is not the same as 'understanding semantics'.


Joe Gregorio        http://bitworking.org


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