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Subject: RE: [wsbpel] Input and Input/output

If someone where to feed a BPEL engine a BPEL process definition that
included a WSDL definition that included a output or output/input operation
the BPEL engine would reject the process.

The reason being, as you point out, that output and output/input aren't
needed by BPEL as they are handled implicitly by partnerLinkType in the
manner you describe.

However, the WSDL 1.1 standard does include output and output/input
operations and a user familiar with the standard would reasonably expect
that BPEL would support these operation types. Given that we do not (which,
btw, not only makes sense but also is consistent with industry practice) it
would seem reasonable to have some text in the standard which points the
situation out and explains it.

What I'm trying to figure out is if that language is already in the spec or
if we need to open an issue to have it added.



> -----Original Message-----
> From: Edwin Khodabakchian [mailto:edwink@collaxa.com]
> Sent: Monday, August 25, 2003 8:50 AM
> To: ygoland@bea.com; 'Wsbpel@Lists. Oasis-Open. Org (E-mail)'
> Subject: RE: [wsbpel] Input and Input/output
> Hi Yaron,
> The formalism for output and output/input is based on
> partnerLinkTypes. A
> receive on a partnerLink is equivalent to the output operation.
> Receive/reply is equivalent to a output/input.
> This is an area that is not easy to learn so we should try to
> have only one
> formalism: output or partnerLinks.
> How is dynamic binding implemented using output? Meaning in
> the case of an
> output operation is the binding provided by the service that
> performes the
> callback or the service that provides the callback?
> Thank you,
> Edwin
> > -----Original Message-----
> > From: Yaron Goland [mailto:ygoland@bea.com]
> > Sent: Monday, August 25, 2003 8:39 AM
> > To: Wsbpel@Lists. Oasis-Open. Org (E-mail)
> > Subject: [wsbpel] Input and Input/output
> >
> > BPEL only supports input and input/output WSDL operations. It
> > does not support output and output/input. This makes sense as
> > the vast majority of Web Service stacks don't have support
> > for output and output/input either. However this is something
> > that needs to be expressed in the specification. I thought
> > text on the subject had been added to the spec but I just
> > looked for it and couldn't find it. Can anyone point me to
> > the text or do we need to open an issue?
> >
> > 	Thanks,
> > 		Yaron
> >

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