RE: Namespaces, W3C XML Schema (was Re: ANN: SAX Filters forNamespaceProcessing)

[Michael Brennan <Michael_Brennan@allegis.com>]

> From: Elliotte Rusty Harold [mailto:elharo@metalab.unc.edu]

<snip/>

> And witness all the people using these products NOT. I 
> classify this stuff along with tree-based XML editors and 
> binary variants of XML as something that gets reinvented 
> several times a month without any actual market demand. 

I don't think I'd agree that there is no market demand for data-binding
tools. I think the complexity of XML Schema -- and the consequent complexity
of tools that rely upon it -- is inhibiting more widespread adoption.

> On the other hand, over the last three years as I've taught 
> developers about DTDs, almost invariably the first question 
> is "How do I say that an element contains an int?" and the 
> second question is usually ""How do I say that an element 
> contains a year since 1969?" or some variant thereof. 

In other words, people want data-binding, but they want it to be simple.

And it's really not clear to me why a language intended to just support XML
validation needs to layer such concepts as types and inheritance on top of
XML -- unless it is really intended to support data-binding.