Re: Negotiation problem

[christopher ferris <chris.ferris@east.sun.com>]

I concur with Stefano's observations with one caveat...
what is univoque?

Cheers,

Chris ;-)

Stefano POGLIANI wrote:
> 
> Michael,
> 
>         pls find my comments embedded.
> Best regards
> /stefano
> 
> > -----Original Message-----
> > From: Michael Joya [mailto:mike.joya@xmlglobal.com]
> > Sent: 31 January 2001 01:14
> > To: Stefano POGLIANI
> > Cc: ebxml-poc@lists.ebxml.org
> > Subject: Re: Negotiation problem
> >
> >
> > Stefano POGLIANI wrote:
> >
> > >         There is a SINGLE CPA that is negotiated by the two parties.
> > >         Let's take the simple case of two parties stating they support
> one BP (it
> > >         will be simple to extend to multiple BPs).
> >
> > >        The CPP of PartyA references the BP_Sell_The_Flowers. The CPP of
> PartyB also
> > >         references the BP_SellThe_Flowers. PartyA and PartyB negotiate
> ONE CPA.
> > >         Your (2) (which says, if I am correct "The Respondant must
> calculate the exact
> > >         same CPA as her potential client") is improbable in the sense
> that there is
> > >         only one CPA
> >
> >   I understand that only one CPA exists between the two parties
> > for a given BP. The problems I face are:
> >
> > a) who authors it?
> 
>         So far, this is not perceived as an issue.
>         It is not important who is going to author it, but what will the CPA
>         contains and which format will it portray.
> 
>         As far as I am concerned, I would like (obviously) to have/build a tool
>         which would be able to properly deal with the following:
>         - editing/displaying CPPs
>         - editing/displaying CPA
>         - helping in composing a CPA from two CPPs (drag/drop, automatic
>           verification of compatibilities etc)
> 
>         As someone (Marty I think) pointed out recently, it will be very difficult
>         to think that a CPA can be "generated" in an univoque way; I personally
>         think that a tool may help in composing a CPA but human intervention
>         will be required, at least up until there will be more knowledge on the
> topic.
> 
>         This does not mean that there is no format for the CPA, of course. But that
>         there "may" be many ways to express the same concept or there may be
> variants
>         that cannot easily be picked up automatically
> 
> > b) how does the non-authoring party come into possession of it?
> 
>         As far as I understand today, the two parties will work off-line to
>         cooperatively build/compose the CPA.
>         Fax, e-mail, snail-mail, phone...
> 
>         I think that, as someone already pointed out, automatic negotiation of
>         the CPA is not currently the most critical issue, nor it is a showstopper.
>         Once the CPA format is known and once the relationships between the
>         CPA tags and the two-CPPs tags will be explained, one could arrive to
>         the CPA itself. Someone could say: well, but this will be laborious and
>         there is no grant that the process is univoque. I may agree, but
>         unless the CPA specs will prevent people from understanding how the
>         CPA content is derived from the CPPs contents, then it will be fine
>         for the infrastructure release.
> 
> >
> >   Option 2 infers that both parties have with the same BP and CPP
> > documents to start off with. They each create (independently) identical
> copies of
> > the same CPA document.
> >
> >
>         I do not think that "creating identical copies" is the best approach.
>         It is not impossible, though, and nothing in the CPA specs will prevent
> this from
>         happening. But it seems to me (personal consideration) the longest way to
>         reach the result.
> 
> >
> > PS: My most recent copy of the CPP&A Specification is v0.1 dated
> > 01/15/01. Is this up to date?
> 
>         The latest should be V0.29
> 
> >
> >
> >
> > --
> > // Michael Joya
> > // XML Global Research and Development
> > // 1818 Cornwall Ave. Suite 9
> > // Vancouver, Canada
> > // 604-717-1100x230
> >
> >
> >
> >
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