With my comments and edits.

This works for me.

I added one thing of substance. Inductively, if a sequence group is known to exist, and that sequence group is required within an enclosing sequence group, then the enclosing sequence group is also known to exist. This lets these things cascade outward naturally by the implications of being required.

I fixed typos like plurals and such.

We have to decide about the term "component". I thought the term for "element or model group" was "item".





On Wed, Jan 27, 2010 at 7:14 AM, Alan Powell <alan_powell@uk.ibm.com> wrote:


There was quite a lot of overlap between the Discriminators document  and the previous Resolving Uncertainty document so I merged the two together and incorporated Suman's and Steve's comment. It is a bit of a rushed job but should help the discussion. I didn't have time for examples.


 
Regards
 
Alan Powell
 
Development - MQSeries, Message Broker, ESB
IBM Software Group, Application and Integration Middleware Software
-------------------------------------------------------------------------------------------------------------------------------------------
IBM
MP211, Hursley Park
Hursley, SO21 2JN
United Kingdom
Phone: +44-1962-815073
e-mail: alan_powell@uk.ibm.com


----- Forwarded by Alan Powell/UK/IBM on 27/01/2010 12:10 -----
From: Alan Powell/UK/IBM@IBMGB
To: dfdl-wg@ogf.org
Date: 26/01/2010 12:59
Subject: [DFDL-WG] Fw: discriminators - such as it is
 
Regards
 
Alan Powell
 
Development - MQSeries, Message Broker, ESB
IBM Software Group, Application and Integration Middleware Software
-------------------------------------------------------------------------------------------------------------------------------------------
IBM
MP211, Hursley Park
Hursley, SO21 2JN
United Kingdom
Phone: +44-1962-815073
e-mail: alan_powell@uk.ibm.com



----- Forwarded by Alan Powell/UK/IBM on 26/01/2010 12:59 -----
From: Mike Beckerle <mbeckerle.dfdl@gmail.com>
To: Alan Powell/UK/IBM@IBMGB
Cc: Steve Hanson/UK/IBM@IBMGB
Date: 21/01/2010 16:12
Subject: discriminators - such as it is



Alan,

This is where I am with discriminators. I won't have an opportunity to work on this again for a bit, and it's close, though not perfect. In particular, there's a numbered list of points here, and the order of those points is probably not right.

...mikeb




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