Re: proposal for resolving service type issues

One way around this is to make the implements element a child of the
service.

++++++++
Steve Graham
sggraham@us.ibm.com
(919)254-0615 (T/L 444)
Emerging Technologies
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                      "Jean-Jacques                                                                                                    
                      Moreau"                  To:       Sanjiva Weerawarana <sanjiva@watson.ibm.com>                                  
                      <moreau@crf.             cc:       "WS-Desc WG (Public)" <www-ws-desc@w3.org>                                    
                      canon.fr>                Subject:  Re: proposal for resolving service type issues                                
                      Sent by: www-ws-                                                                                                 
                      desc-request@w3.                                                                                                 
                      org                                                                                                              
                                                                                                                                       
                                                                                                                                       
                      06/10/2002 01:30                                                                                                 
                      PM                                                                                                               
                                                                                                                                       
                                                                                                                                       




Sanjiva, I like your proposal. In particular, I think there is a
lot of merit in bringing the notion of an abstract service into
the foreground. Please find my comments below.

Jean-Jacques.

> We require that all services defined in a single document be of
a single
> service type.

This is fine...

> That type is indicated by inserting the following required
declaration:
>
>      <implements serviceType="qname"/>

... however I don't think we can require the wsdl:implement
element to be always present. For example, the WSDL file may only
contain an abstract service declaration, which is refined and
implemented in a second WSDL file. I think wsld:implement should
be optional unless there is a concrete service definition (i.e.
binding), in which case it should be mandatory.

> two portTypes are said to be equivalent iff they have the same
qualified
> name.

Hmmm... somebody could get it wrong and you could end up with two
portType with the same qname but different children EIIs. It's
probably not our business, though, and more like a programmer's
bug.