RE: [ubl-ndrsc] NDR Checklist Clarification

["Burcham, Bill" <Bill_Burcham@stercomm.com>]

That's right Tony.  It's a two-level model.  Include is used at the first
level (where needed) to compose the constituents of a namespace.  Import is
used to reference foreign namespaces.  See chapter 11 of the Modularity,
Namespace, and Versioning position paper, "Recommendation: Module Structure"
for the details
http://www.oasis-open.org/committees/download.php/1384/draft-burcham-modnamv
er-08.zip

-----Original Message-----
From: Anthony B. Coates [mailto:abcoates@londonmarketsystems.com] 
Sent: Saturday, September 20, 2003 9:59 AM
To: Chin Chee-Kai; CRAWFORD, Mark
Cc: UBL NDRSC
Subject: Re: [ubl-ndrsc] NDR Checklist Clarification


** Reply to message from Chin Chee-Kai <cheekai@softml.net> on Sat, 20 Sep
2003 11:22:36 +0800 (SGT)


> On Fri, 19 Sep 2003, CRAWFORD, Mark wrote:
> 
> >>Oops, hit the return too soon.
> >>
> >>	R90: 
> >>	----------- 
> >>	A RootSchema in one UBL namespace that is dependant upon type
definitions 
> >>	or element declarations defined in another namespace MUST NOT import

> >>	schema modules from that namespace. 
> >>	-----------
> >>
> >>	What is this talking about??
> >>
> >>We may have missed the wording here, but my understanding
> >>is we were trying to preclude importing a schema module that 
> >>imports a schema module (NOT allowed)
> 
> Thanks for clarifying, Mark.
> 
> I share your understanding and wording, and believe that
> the existing wordings in R90 MUST be removed.

My understanding was that this rule refers to the following situation:

* Root Schema A includes modules A1 and A2 (all in xmlns:a).
* Root Schema B includes modules B1 and B2 (all in xmlns:b, which is
different to xmlns:a).

The rule says:

* Root Schema A *may* import root Schema B, but *must not* import module B1
or module B2.
* Root Schema B *may* import root Schema A, but *must not* import module A1
or module A2.

That is to say, you are allowed to import a root Schema from a different
namespace, but you may not import a module from a different namespace.

	Cheers,
		Tony.
====
Anthony B. Coates
London Market Systems Limited
33 Throgmorton Street, London, EC2N 2BR 
http://www.londonmarketsystems.com/
mailto:abcoates@londonmarketsystems.com
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