[xquery-talk] questions about security and dynamically
dhruba_borthakur at hotmail.com
Tue Oct 21 15:53:43 PDT 2003
Hi Michael and Per,
Thanks for your explanations. I was touching on two issues and your answers
The first question was whether most XQuery implementations support creating
an query dynamically and then executing it. From what I gather, this feature
in fact, supported by a few implementations.
The second question was whether a XQuery code can detect if a library has
been imported and if so, then invoke a function in the library. If the
non-existent, then ignore the error. I gathered that no existing
have support for this yet.
>From: "Michael Kay" <mhk at mhk.me.uk>
>To: "'Per Bothner'" <per at bothner.com>,"'Dhruba Borthakur'"
><dhruba_borthakur at hotmail.com>
>CC: <talk at xquery.com>
>Subject: RE: [xquery-talk] questions about security and dynamically
>Date: Tue, 21 Oct 2003 22:41:10 +0100
> > I would expect most implementations would support this, possibly
> > exception those those that only support "stored queries". After all
> > most databases allow you to create SQL dynamically, so you
> > there is no
> > reason not to do the same for XQuery. And implementation
> > that are not
> > tied to a database will probably also mostly allow dynamic query
> > construction. This certainly includes Qexo.
> > Perhaps I'm misunderstanding your question.
>I think he's looking for something like the dyn:evaluate() function in
>EXSLT. This isn't provided in XQuery 1.0 (nor in XSLT 2.0, to my
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