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   Re: What XML tag to Java method binding solution exist?

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  • From: Peter Murray-Rust <peter@ursus.demon.co.uk>
  • To: <xml-dev@ic.ac.uk>
  • Date: Thu, 18 Jun 1998 19:36:00

At 16:22 18/06/98 +0100, Michael Kay wrote:
>>Rolande Kendal asked:
>>What XML tag to Java method binding solutions exist?
>I'm not sure exactly what you mean by the question. If you
>want to write specific Java classes to process specific XML
>element types, this is exactly what SAXON gives you.
>See http://home.iclweb.com/icl2/mhkay/saxon.html
Agreed. In principle this is a very important area and is certainly
interesting to W3C members. I think it naturally comes out of the DOM - but
I'd be happy to have more authoritative comment. In principle XSL *could*
provide this binding (it uses ECMAScript == JavaScript at present). However
when I raised this many months ago, the feeling was that embedding Java in
XSL was too challenging at that time. 

In JUMBO1 there was a mechanism for mapping elements to java classes that
was Namespace-aware. It is possible that such a mechanism may arise out of
the XSchema initiative. The major question we would need to address is how
to map methods onto this. Thus when an event occurs, or a rule is triggered
*which* method is invoked? In JUMBO I used a simple convention that
clicking on an element activated display(), and every FOONode.java
implements a display() method. We may need others, like print(), write(),
getDisplayCompenent(), validate(), etc.

I'd be very happy to see other comments on this :-)


Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic
net connection
VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary

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