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Re: Simple xpath software request

• To: <xml-dev@l...>,<veillard@r...>,"Mike Thanos" <mike_thanos@l...>
• Subject: Re: Simple xpath software request
• From: "Christian Nentwich" <c.nentwich@c...>
• Date: Thu, 28 Feb 2002 23:12:16 -0000
• References: <3C7E8BF1.7050106@b...> <20020228114723.I18297@r...> <a05100304b8a4541788b7@[10.0.1.29]>

> I have been trying to find a related tool/function for some time (and
> may well have missed it in my search) - an x-path validation tool.
> Such a tool would be capable of validating a given x-path against a
> schema.

This problem is undecidable. I've written a program that can determine
whether a path is a subpath of another path given a DTD, but it cannot deal
with arbitrary expressions.

For example, the path id('foo')/bar/baz cannot be checked since you cannot
be certain that the element with id 'foo' will be an element that has 'bar'
as a child.

In any case, my code is not in a presentable form at the moment, it's
ongoing research :)

Christian Nentwich

• References:
  • Simple xpath software request
    • From: Kris Thompson <race@b...>
  • Re: Simple xpath software request
    • From: Daniel Veillard <veillard@r...>
  • Re: Simple xpath software request
    • From: Mike Thanos <mike_thanos@l...>

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