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RE: XSLT2 - which parts solve real 1.0 problems, whichmakes co

• To: Michael Kay <mike@s...>
• Subject: RE: XSLT2 - which parts solve real 1.0 problems, whichmakes coffee? - was Re: Streaming XML
• From: Uche Ogbuji <uche.ogbuji@f...>
• Date: Thu, 30 Dec 2004 18:25:33 -0700
• Cc: 'Michael Champion' <michaelc.champion@g...>,'David Megginson' <david.megginson@g...>,'XML Developers List' <xml-dev@l...>
• In-reply-to: <E1CkAPl-0000bH-00@u...>
• Organization: Fourthought, Inc.
• References: <E1CkAPl-0000bH-00@u...>

On Fri, 2004-12-31 at 00:13 +0000, Michael Kay wrote:
> > Going off on a tangent here ... that is a subject which intrigues me. 
> > It is clear that much of XSLT2 really does offer simpler ways of doing
> > things that are possible but tedious in XSLT 1.  It's hard to know,
> > before XSLT 2 gets into people's hands and the wheat and chaff get
> > sorted out by experience, which parts reflect the the voice of
> > experience, and which parts are "second system syndrome".  Anyone want
> > to offer opinions?
> 
> You're asking a very heavily loaded question. Have you stopped beating your
> wife?

Whoa.  Yikes.

Actually I'd thought the resulting discussion pretty even-handed and
useful.


> There are other important features that aren't included because the WG
> worked hard to avoid feature creep - examples are dynamic XPath evaluation

Really miss this.  Thank goodness for EXSLT dyn:evaluate()


> higher-order functions

Really miss this, but Dimitre has some astonishingly clever work in the
area even given XSLT 1.0.


> and try/catch.

Ooh.  Intriguing.  We had a discussion about such extensions in the
4Suite mailing list a few years back.  My own proposal was for special
XSLT error templates that could "match" or trigger on error conditions,
assuming a very simple XML vocab for XSLT error communication in the
first place.  Then there could be some sort of error mode so that
explicitly scoped try/catch constructs were not necessary.  Rather,
simple heuristics would provide for matching current error and error
mode to error template.

Do you know of or have any references to any particular exception
handling proposals from the XSLT 2.0 development process?

Thanks.


-- 
Uche Ogbuji                                    Fourthought, Inc.
http://uche.ogbuji.net    http://4Suite.org    http://fourthought.com
Use CSS to display XML - http://www.ibm.com/developerworks/edu/x-dw-x-xmlcss-i.html
Full XML Indexes with Gnosis - http://www.xml.com/pub/a/2004/12/08/py-xml.html
Be humble, not imperial (in design) - http://www.adtmag.com/article.asp?id=10286
UBL 1.0 - http://www-106.ibm.com/developerworks/xml/library/x-think28.html
Use Universal Feed Parser to tame RSS - http://www.ibm.com/developerworks/xml/library/x-tipufp.html
Default and error handling in XSLT lookup tables - http://www.ibm.com/developerworks/xml/library/x-tiplook.html
A survey of XML standards - http://www-106.ibm.com/developerworks/xml/library/x-stand4/
The State of Python-XML in 2004 - http://www.xml.com/pub/a/2004/10/13/py-xml.html

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