...and SAWSDL (a "recent" W3C working group) allows you to associate semantics in the sense of references to ontologies to WSDL element. Which then can be use for various purposes, e.g. trying to find message mediators etc.
----- Ursprüngliche Mail ---- Von: Sanjiva Weerawarana <[EMAIL PROTECTED]> An: [email protected] Gesendet: Sonntag, den 26. November 2006, 17:20:01 Uhr Betreff: Re: [service-orientated-architecture] ROA is not SOA - (was Alternatives to WS Standards) On Sun, 2006-11-26 at 11:50 +0100, Jan Algermissen wrote: > On Nov 25, 2006, at 8:08 AM, Sanjiva Weerawarana wrote: > > > WSDL? You either need WSDL (2.0, not 1.1 as the new version has much > > better POX/HTTP support) or something like it. How else do you tell > > other (computers) what your RESTful service does? > > Examples: > > http://ietf. org/internet- drafts/draft- ietf-atompub- protocol- 11.txt > > http://tools. ietf.org/ wg/atompub/ draft-snell- atompub-feature- 01.txt > > (the later one being essentially a means to discover services by > capability). I assume you're referring to ATOM service documents. I don't see how that can be used to define say a URL template, which most people now recognize as a necessary thing to describe even fully RESTful services. Am I missing something? > Aside: can WSDL tell me *everything* I need to know to decide that > some service > Foo is the one I want? Of course not. WSDL tells you *no* semantic information. It only tells you the bare bones of what you need to know: the format of the data to be sent and what the service will return. That's it. It doesn't even tell you whether the data should be signed- that's the domain of WS-Policy and WS-SecurityPolicy. What would make you or anyone think that WSDL provided everything you needed to know to make a service identity decision? Sanjiva. -- Sanjiva Weerawarana, Ph.D. Founder & Director; Lanka Software Foundation; http://www.opensour ce.lk/ Founder, Chairman & CEO; WSO2, Inc.; http://www.wso2. com/ Director; Open Source Initiative; http://www.opensour ce.org/ Member; Apache Software Foundation; http://www.apache. org/ Visiting Lecturer; University of Moratuwa; http://www.cse. mrt.ac.lk/ ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de
