RE: [ubl-lcsc] ISSUE: Nesting and Containership within Schema

["CHIUSANO, Joseph" <JCHIUSANO@lmi.org>]

Title: RE: [ubl-lcsc] ISSUE: Nesting and Containership within Schema

Regarding the reference to Schematron below:  Does anyone have a sense of how widely supported in schema processors Schematron currently is?  Otherwise, I imagine one would use the tools from the http://www.ascc.net/xml/resource/schematron/schematron.html site ("Download Schematron 1.5 Tools").

Regards,
Joe

> **************************************************************************
>   Joseph M. Chiusano
>   Logistics Management Institute
>   2000 Corporate Ridge
>   McLean, VA 22102
>   Email: jchiusano@lmi.org
>   Tel: 571.633.7722
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-----Original Message-----
From: John Larmouth [mailto:j.larmouth@salford.ac.uk]
Sent: Wednesday, August 07, 2002 5:11 AM
To: Eve L. Maler
Cc: CHIUSANO, Joseph; Ubl-Lcsc
Subject: Re: [ubl-lcsc] ISSUE: Nesting and Containership within Schema

You can specify that trivially if you use ASN.1 as the schema definition
notation:

        Root ::= SEQUENCE {
           el1  .....
           el2  SEQUENCE {
                  f1    ..... OPTIONAL,
                  f2    ..... OPTIONAL,
                  f3    ..... OPTIONAL} (EXCEPT {}) OPTIONAL,
           e12  ..... }

John L

"Eve L. Maler" wrote:
>
> (Sorry to jump into this thread so late...  I've been out of the office.)
>
> I don't know of a way to enforce this kind of constraint using XSD
> alone; I think we'd have to resort to something like Schematron, or
> prose, for it.
>
>         Eve
>
> CHIUSANO, Joseph wrote:
> > Also, in the schema you can enforce that if none of the elements within
> > a container appear (if they are all optional), then the container
> > (wrapper) element will not appear.  This would prevent empty container
> > elements if we didn't want to have them.
>
> --
> Eve Maler                                        +1 781 442 3190
> Sun Microsystems                            cell +1 781 883 5917
> XML Web Services / Industry Initiatives      eve.maler @ sun.com
>
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