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RE: ANN: SAX Filters for Namespace Processing

• From: Leigh Dodds <ldodds@i...>
• To: "David E. Cleary" <davec@p...>, xml-dev@l...
• Date: Fri, 03 Aug 2001 16:01:19 +0100

Still doesn't answer the question of why the "elementFormDefault"
attribute defaults to "unqualified" though does it?

Cheers,

L.

> -----Original Message-----
> From: David E. Cleary [mailto:davec@p...]
> Sent: 03 August 2001 15:42
> To: xml-dev@l...
> Subject: RE: ANN: SAX Filters for Namespace Processing
>
>
> > XML Schemas didn't cause the problem, but they did introduce two
> > features (local element types and unqualified child element types) which
> > helped legitimize its practice. And believe me, a lot of people think
> > that if a tool is available, it should be used.
>
> Let's take this argument to an extreme. There are members of the XML
> community who loudly argue that using attributes is a bad practice. XML
> Schema could have taken this point of view and not created attribute
> declarations. These people would be happy, but other wouldn't.
> But then, it
> wasn't a goal of XML Schema to produce a subset of XML as some on
> this list
> have been discussing for years. XML Schema had to be able to model as much
> of well formed XML as possible. That task more correctly belongs
> to whoever
> creates XML 2.0, and that probably will not happen any time soon.
>
> Also, if alternative schema languages like Trex and Relax are unable to
> model this XML, then not only do they have a much lower bar to jump over
> than XML Schema, but I'd also be concerned about what else they
> don't let me
> do in the name of best practices. And if they do allow modeling such as
> this, then they are no more guilty than XML Schema, which IMHO means there
> is no guilt at all.
>
> > This argument is fine for users, who can choose not to use a feature.
> > It's of no use to people (like me) who write schema-driven software. If
> > it's in the spec, we have to support it.
>
> If you are looking to subset XML, then you are correct that XML Schema is
> not the tool to do it.
>
> Dave
>
>
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