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   Re: XML query language

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  • From: "Ingo Macherius" <macherius@darmstadt.gmd.de>
  • To: Paul Prescod <paul@prescod.net>
  • Date: Wed, 31 Mar 1999 22:54:43 +0200

Paul Prescod <paul@prescod.net> wrote at 31 Mar 99, 11:35:

> Mark Birbeck wrote:
> > 
> > Paul Prescod wrote:
> > > And that model has a concept of nodelist -- this is the most
> > > appropriate return value for query results.
> > 
> > What do you mean by nodelist? Does it take into account that result
> > nodes may be returned from different parts of the tree, or even at
> > different depths? 
> Sure. A node list is a list of nodes. No more, no less.

An XQL query may return numbers, strings, Date objects or even user 
defined data types, which are not nodes in the DOM sense, but 
objects. If you wrap the results in tags like <xql:date>, ... you 
will get problems with the user defined types and loose type 
To me the return values of a query are just a vector of objects in 
document orders, of which some happen to be DOM nodes.

Ingo Macherius//Dolivostrasse 15//D-64293 Darmstadt//+49-6151-869-882
GMD-IPSI German National Research Center for Information Technology
mailto:macherius@gmd.de http://www.darmstadt.gmd.de/~inim/
Information!=Knowledge!=Wisdom!=Truth!=Beauty!=Love!=Music==BEST (Zappa)

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