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- From: "Simon St.Laurent" <SimonStL@classic.msn.com>
- To: email@example.com
- Date: Sun, 21 Jun 98 20:15:52 UT
Peter Murray-Rust wrote:
>Remember, of course, that we are likely to need some sort of reference
>implementation. DavidM did this for SAX, and that makes a major impact. My
>feeling here is that we should *identify* the software components that are
>required and make sure that we aren't building up unforeseen problems. (I
>don't think we *are*, but it's always easy to underestimate.) Of the top of
>my head we shall need:
> - a DTD parser (for transformation to XSchema). Do we get everything out
>of SAX (I haven't looked in detail)?
> - a tool for navigating the XSchema tree/patterns. Are DOM tools the >right
thing? Can XPointer language do this? (I used this a lot in JUMBO1 -
>haven't finalised XPtr for J2). e.g. find all RULEs within an ElementType
> - something for interpreting the Rules
> - a DTD writer.
> - some simple transformations (e.g. XML2XML, XML2HTML (for docs). Maybe
>SAXON has a role?
The rules vs. nesting debate will need to be sorted out before I'm comfortable
attempting any of these implementations.
There are several implementations I'd like to see. I suspect the reference
implementation should be a simple XSchema -> DTD converter. This shouldn't be
too difficult a mapping given the parameters we've set for ourselves. I can
try to pull this off, though I can't promise that performance will be
The other base implementation I'd like to see is a verifier that uses SAX to
get its input file and uses SAX to present its output to an application (sort
of like David Megginson's XAF).
If XSchema seems useful, I think we'll be able to make it run. Soon we'll
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