We had been reviewing the facets and default/null/optional a few weeks back.

I said I would make revisions as a number of people had objections.

Here are documents based on these comments.


Main things I did: (1) strict adherence to minOccurs and maxOccurs. No more notion that these are only for validity checking.
(2) simple rule for default values: if it's required and there's a default value, then use the default value. This is for both input and output.

I put a bunch of work into illustrating the semantics of things like dfdl:separatorPolicy="suppress" and so forth. I had been trying to simplify this, but gave up. We're back to 3 policies here: keep, suppress, suppressAtEnd. I did figure out a way to express these via DFDL rewriting.

...mikeb

Mike Beckerle
STSM, Architect, Scalable Computing
IBM Software Group
Information Platform and Solutions
Westborough, MA 01581
direct: voice and FAX 508-599-7148
assistant: Pam Riordan  
                 priordan@us.ibm.com
                 508-599-7046