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Subject: Re: [ebxml-cppa] Placeholder values in CPA templates



Some thoughts below.

Regards,
Marty

*************************************************************************************

Martin W. Sachs
IBM T. J. Watson Research Center
P. O. B. 704
Yorktown Hts, NY 10598
914-784-7287;  IBM tie line 863-7287
Notes address:  Martin W Sachs/Watson/IBM
Internet address:  mwsachs @ us.ibm.com
*************************************************************************************



Dale Moberg <dmoberg@cyclonecommerce.com> on 02/05/2002 01:34:34 PM

To:    CPPA <ebxml-cppa@lists.oasis-open.org>
cc:
Subject:    [ebxml-cppa] Placeholder values in CPA templates




While working on updates to the CPA formation appendix, I realized
that I did not recall that we have every made a decision about how
to mark placeholder values in a CPA template.

MWS:  I don't recall a decision.

Some placeholder values might have a specific type according to schemas,
and in general I doubt that it will work to just omit values (have empty
strings or whatever datatype is involved.)

MWS: Parsers probably would not like that. We would need a valid value
that is understood to be changeable.  Eventually, an NDD (Negotiation
Descriptor Document) would take care of it but we need something now.

If no one can find where we have said something about this, I propose
that we add an issue to the database that says how to mark placeholder
values.

MWS:  I agree with adding an issue.

Some more specific questions arise for specific places that might be
subject to placeholders. For example, in PartyId, can we allow the
"type"
attribute to have a placeholder value? Or should a CPA template always
nail down the expected type (eg, "urn:oasis:names:tc:ebxml-cppa:duns")?

MWS:  A CPA template can nail down the owning party's PartyId but it has
to leave the other party free to choose its own.

MWS:  Another valid question to ask is whether it is necessary for a
CPA template to pass parser validation.  It would be a good idea but
omitting validation before the template is completely filled in would
allow for leaving some values empty.

Thoughts?

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