Re: [ebxml-dev] CPPA to WSDL bindings

[Chiusano Joseph <chiusano_joseph@bah.com>]

<Excerpt>
we are now aiming for WSDL 1.2 integration (of some sort) and
integration also of all the WS-Policy,Trust,SecureConversations,Etc,Etc
extensions.
</Excerpt>

As written, I think this conveys that WS-Policy (etc.) are extensions to
WSDL - which they are not.  They are specifications under the Global XML
Web Services (GXA) initiative, which (in some specifications such as
WS-PolicyAttachment) defines how to associate policy expressions with
WSDL, but these are really not "extensions" in the pure sense.

Kind Regards,
Joe Chiusano
Booz | Allen | Hamilton

Dale Moberg wrote:
> 
> We started work on this last year but we lost both of our subteam
> co-chairs for various reasons. So we still have interest in WSDL within
> CPPA, but we are now aiming for WSDL 1.2 integration (of some sort) and
> integration also of all the WS-Policy,Trust,SecureConversations,Etc,Etc
> extensions. For wsdl 1.1, we would probably only support features found
> in the ws-I basic profiles (as these have the best chance of supporting
> interoperable implementations).
> 
> An additional issue is that CPPA and BPSS had agreed to coordinate how
> we approached references, imports, or in-lining of (parts of) a WSDL.
> BPSS has been trying to get out a new version and we have not agreed on,
> or even much discussed, how to proceed on this topic.
> 
> Also, the main buzz about wsdl is that it provides a notation for nice
> programming tricks of taking  xsd:complexTypes (or elements)
> representing inputs, outputs, and faults, and then generating stub code
> from them for getting/setting data. Also using reflection (or similar
> way of getting type information), I can generate the wsdl descriptions
> for class methods I have in my application server environment. How
> useful this will be in the long run for helping in b2b integration
> really remains to be seen. Semantic alignment is in no way guaranteed by
> using wsdl on both ends, as far as I can tell.
> 
> Most of the features the CPPA helps to define and thereby promote
> interoperable agreements about-- security formats, reliable messaging,
> policy, PKI alignments--are in all the wsdl or soap extensions, such as
> WS-Trust, WS-Policy, and so on.
> 
> We do welcome people providing us with use cases to help us define what
> is useful on these topics
> 
> For example, is this the use case of interest:
> 
> Given a CPA template, generate a WSDL for the "CanSends and CanReceives"
> present in it? This might be something doable (with more or less loss,
> depending on the WS-AdditionalModules allowed) with an XSLT. [Though
> general DOM manipulation APIs would probably be less tedious.] Wrap the
> document namespaces involved in complexTypes, and stick them under the
> appropriate wsdl operation (input, output, etc.), eventually defining a
> portType. Find the endpoint (and if HTTP or HTTPS), get your port.
> Binding will be more work. A MIME binding will be needed for ebXML's
> SOAP with attachments. Many WSDL people agree that the current MIME
> binding needs some work. (Many of us hope WSDL 1.2 fixes this situation
> rather than jettisons it.) After all that is done somehow, and maybe
> another wsdl defintion or two (service,etc) is added, then you hook up
> your qnames as needed, and voila, a wsdl.
> 
> Perhaps you could send us the specific use cases or problems you hope to
> solve, and we can consider it in the group as we move forward beyond
> version 2.0.
> 
> Thanks,
> 
> Dale Moberg
> 
> -----Original Message-----
> From: Chiusano Joseph [mailto:chiusano_joseph@bah.com]
> Sent: Thursday, February 20, 2003 10:41 AM
> To: Rajesh Pradhan
> Cc: ebxml-dev@lists.ebxml.org
> Subject: Re: [ebxml-dev] CPPA to WSDL bindings
> 
> Rajesh,
> 
> In case no one from the CPPA TC responds to this: I did some research on
> this recently.  Here's what I found:
> 
> - Latest CPPA draft spec (version 11): No mention of WSDL
> 
> - Latest references from TC mail archives:
> 
> [1] 23 Oct 2002, question on this topic (no response on listserv):
> http://lists.oasis-open.org/archives/ebxml-cppa/200210/msg00022.html
> 
> [2] 28 May 2002, WSDL documents generated from CPA:
> http://lists.oasis-open.org/archives/ebxml-cppa/200205/msg00028.html
> 
> Kind Regards,
> Joe Chiusano
> Booz | Allen | Hamilton

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