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

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

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-----Original Message-----

From: John Larmouth [mailto:]

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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