Re: [relax-ng] future TC work

[John Cowan <jcowan@reutershealth.com>]

Michael Fitzgerald wrote:

> A few things I hope we consider:
> 
> - Identity constraints: key/keyref mop up


This will be rather more than a "mop up".  One possible, if hacky,
way to do it is to create a datatype library providing "key" and
"keyref" with several required parameters: document URI, root
of keyspace (as a restricted XPath), keyed object (ditto),
key in keyed object (ditto).


> - Non-XML syntax: an additional committee spec? I think people like it.


Yes, yes!


> - Regular expressions: something natural like this (I don't care what the
> <regex> element is called)


I think the Right Thing here is to add a regex parameter to the

default datatype library.  Almost everything that XML Schemas datatypes
do can be described with regexes if carefully enough crafted.

*Whether* this is worth doing is another matter.

-- 
John Cowan <jcowan@reutershealth.com>     http://www.reutershealth.com
I amar prestar aen, han mathon ne nen,    http://www.ccil.org/~cowan
han mathon ne chae, a han noston ne 'wilith.  --Galadriel, _LOTR:FOTR_