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Re: XPath 2.0 - how much of XQuery should it include?

• To: "J.Pietschmann" <j3322ptm@y...>
• Subject: Re: XPath 2.0 - how much of XQuery should it include?
• From: Uche Ogbuji <uche.ogbuji@f...>
• Date: Mon, 13 May 2002 20:50:06 -0600
• Cc: xml-dev@l...
• In-reply-to: Message from "J.Pietschmann" <j3322ptm@y...> of "Mon, 13 May 2002 21:41:30 +0200." <3CE016EA.9020009@y...>
• Sender: uche.ogbuji@f...

> David Carlisle wrote:
> > Did _anyone_ (outside the schema WG)  ever request support for schema
> > complex types in XSLT. (This is a serious question, I have never seen
> > the subject come up on any XSL forum that I follow).
> 
> Like you, I can't remember of a single post from an average
> XSLT user *demanding* any XSchema type support on the XSL linst.
> 
> There have been lots of requests for a variety of date handling
> functions, in particular sorting and minimum/maximum of dates.
> The date related XSchema types *could* be an approach to solve
> this, but so does an appropriate library, which could also
> provide an extensive set of other date manipulation routines,
> including date arithmetic and parsing+formatting localized
> formats.

Yes, but of course EXSLT provides this without a static type in sight.


> There were also quite a few requests regarding using regular
> expressions for matching and substring extraction. Specifically
> the first use case bears some resemblance with some XSchema
> constructs (facets?).

EXSLT also provides regex, and I'm sure this is a far friendlier solution than fiddling with facets.


> I'm not really sure how many requests there were regarding
> parsing localized numeric data from the XML. Well, there
> were some. In any case, as far as I remember XSchema types
> wont help with this at all.

You mean, for instance, reading numbers such as  "1.000.000,00" from text?

I think a set of conversion functions that sit on top of EXSLT regex could provide this.

> Well, as much as I like a type system in other contexts, the
> XSchema type system doesn't seem to offer much in the context
> of XSLT.

Agreed.


-- 
Uche Ogbuji                                    Fourthought, Inc.
http://uche.ogbuji.net    http://4Suite.org    http://fourthought.com
Track chair, XML/Web Services One (San Jose, Boston): http://www.xmlconference.com/
DAML Reference - http://www.xml.com/pub/a/2002/05/01/damlref.html
The Languages of the Semantic Web - http://www.newarchitectmag.com/documents/s=2453/new1020218556549/index.html
XML, The Model Driven Architecture, and RDF @ XML Europe - http://www.xmleurope.com/2002/kttrack.asp#themodel

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  • Re: XPath 2.0 - how much of XQuery should it include?
    • From: "J.Pietschmann" <j3322ptm@y...>

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