Re: [sca-bindings] Notions around issue 54 - close to a proposal

[Simon Nash <oasis@cjnash.com>]

David Booz wrote:
> +1 to Mike.
> 
> And one further comment (on the reference side), how do other people 
> feel about an optimization allowing wsdlElement to point to a WSDL 
> service that has only one port in it?
> 
I would take this a step further to allow a reference to point to
a WSDL service with more than one port in it.  In this case, the
SCA runtime would select a port in an implementation-defined manner.
It is my understanding that this is what the current spec implies.

   Simon

> Dave Booz
> STSM, BPM and SCA Architecture
> Co-Chair OASIS SCA-Policy TC and SCA-J TC
> "Distributed objects first, then world hunger"
> Poughkeepsie, NY (845)-435-6093 or 8-295-6093
> e-mail:booz@us.ibm.com
> 
> Inactive hide details for Mike Edwards ---02/11/2009 05:50:09 AM---Eric, 
> Comments inline as <mje></mje>Mike Edwards ---02/11/2009 05:50:09 
> AM---Eric, Comments inline as <mje></mje>
> 
> 
> From:	
> Mike Edwards <mike_edwards@uk.ibm.com>
> 
> To:	
> OASIS Bindings <sca-bindings@lists.oasis-open.org>
> 
> Date:	
> 02/11/2009 05:50 AM
> 
> Subject:	
> Re: [sca-bindings] Notions around issue 54 - close to a proposal
> 
> ------------------------------------------------------------------------
> 
> 
> 
> 
> Eric,
> 
> Comments inline as *<mje></mje>*
> 
> Yours, Mike.
> 
> Strategist - Emerging Technologies, SCA & SDO.
> Co Chair OASIS SCA Assembly TC.
> IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
> Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
> Email: mike_edwards@uk.ibm.com
> 
> From: 	Eric Johnson <eric@tibco.com>
> To: 	OASIS Bindings <sca-bindings@lists.oasis-open.org>
> Date: 	11/02/2009 02:57
> Subject: 	[sca-bindings] Notions around issue 54 - close to a proposal
> 
> 
> ------------------------------------------------------------------------
> 
> 
> 
> Staring at issue 54 for several hours, I came up with the following:
> 
> The URI(s) for a binding.ws element contained in an service element
> SHOULD be determined by the first of these rules that is satisfied:
> 1. If the @wsdlElement attribute is present
>   1. and refers to a WSDL port element, use the address of the port
>   2. and refers to a WSDL service element, use the address for each
> port element that the service contains.
> 2. If the endpointReference element is present, and has a wsa:Address
> element with an absolute URI, use the wsa:Address element value
> 3. If there is no endpointReference element
>   1) if the @uri attribute is present on the binding.ws element, it
> must be relative (Assembly section 9), and the actual URI should contain
> the structural URI of the service plus the value of the @uri attribute.
>   2) if the @uri attribute is absent, the actual binding URI should
> contain the structural URI of the binding.
> 4. If there is an endpointReference element with a relative wsa:Address
> element, compute the address as per #3, and combine the relative address
> from wsa:Address with the result. *
> <mje>Should not #4 be a subclause of #2? Clearly #3 is skipped if there 
> is an* *
> endpointReference element</mje>*
> 
> The URI for a binding.ws.element contained in a reference element SHOULD
> be determined by the first of these rules that is satisfied: *
> <mje>Why SHOULD rather than MUST here?</mje>*
> 
> 1. If the @wsdlElement attribute is present
>  1. and refers to a WSDL port element, use the address of the port
> 2. If the endpointReference element is present, and has a wsa:Address
> element with an absolute URI, use the wsa:Address element value
> 3. and the @uri is present on the binding.ws element, and it is
> absolute, use the value of the @uri attribute
> 4. and the @uri is present on the binding.ws element, and it is
> relative, use the address determined by the targeted service
> *
> <mje> I don't understand #4 here. What is the "targeted service" in this 
> case? The* *
> @uri value is supposed to identify the "targeted service" - how can the 
> address be* *
> determined from the targeted service without already knowing what the 
> targeted* *
> service is - and in this case the @uri is supposed to contain this 
> information.* *
> </mje>*
> 
> If this makes sense to people, I can finish up by adding in the
> appropriate text about how the endpointReference reference parameters
> should be used.
> 
> -Eric.
> 
> 
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