Re: [xsl] transform optimization for a schema-constrained domain

Subject: Re: [xsl] transform optimization for a schema-constrained domain
From: "Rob Lugt" <roblugt@xxxxxxxxx>
Date: Thu, 26 Jul 2001 16:47:31 +0100
Joerg Pietschmann wrote

> Again, to press my point home: A processor which would use a DTD/Schema
> to catch misspelled element names and some expressions which would always
> result in an empty node set because of DTD/Schema-constraints would have
> saved me a lot of debugging time. I see this as a feature which could be
> turned on at development time, much like tracing.
> You may have noticed that this might have prevented quite a few "why is
> there no output from my code?" questions on this list (assuming the guys
> had a proper DTD attached...)
> Are there other XSLT-users who think this could be a useful feature?
> Rally to the flag! We might convince some friendly processor implementors
> to implement it for us :-)
> Well, asking for DTD support would probably be to much. Schemas are XML
> could probably hooked into the processors much easier, without inventing
> APIs for element definition access and such stuff. So i'm willing to
> for Schema support only :-)

SAX-based processors do already have an API to give them access to DTD
declarations.  Not all SAX processors support them, but they have been
defined.  See DeclHandler from the SAX2-ext package at [1].


Rob Lugt
ElCel Technology


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