schema support in xerces 1 - what's remaining to be done

[lm...@ca.ibm.com]

I thought I should post a list of the development work still outstanding in
xerces1 for full schema support.     The release about to be shipped will
include, for the most part, syntactic and semantic changes to existing
function (such as the complexType and model group changes, to name a few).
The new features you'll see are:   union and experimental identity
constraint support.
There are still a number of features that need to be added (or finished) to
get us full schema support in xerces-1:

   - redefine
   - whiteSpace facet
   - simple value normalization
   - NOTATION
   - Annotation (currently ignored)
   - Block and final (currently ignored)
   - Abstract (currently ignored)
   - handling of default and fixed attributes for element decls (these are
   currently ignored)
   - Date/time
   - Identity constraints (experimental subset currently implemented)
   - Structures Chapter 5 constraint checking

As I mentioned in a previous mail, we'll attempt to post a release schedule
for this work shortly.      If anyone is interested in helping out with
this work, that would be great!

Lisa.