Use case for the deployedService / targetService issue

Here is the example I gave during today's call.

I have a Buyer Web service and a Seller Web service that interact according to a choreography. The choreography happens to be an executable process (a la BPEL) and to be represented as a Web service itself: let's call it BuySellChor.

In the same WSDL file I describe the three services. I have three wsdl:service definitions with corresponding names BuyerS, SellerS, BuySellChorS.

I also have:

deployedService behind BuyerS (the agent implementing the buyer), with URI=http://BuyerDS
deployedService behind SellerS (the agent implementing the seller), with URI=http://SellerDS
deployedService behind BuySellChorS (the agent implementing the choreography, e.g. a BPEL executable process), with URI=http://BuySellChorDS

Now I want to use a URI to indicate that BuyerS, SellerS and BuySellChorS are related (they are a service group). Let's say that this URI is http://BuySellChorTR (but I could have reused http://BuySellChorDS as well). This would be the URI corresponding to targetResource as described by the WSD group.

Clearly http://BuySellChorTR is not the same as http://BuyerDS or http://SellerDS. In fact, http://BuySellChorTR can hardly be identified with the concept of a targetResource associated with BuyerS or SellerS.

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