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On Mon, 2004-12-27 at 13:31 -0800, Daniela Florescu wrote:
> > I've gotten pretty good at assembling a SAX engine quickly by
> > composing one using resuable strategies.
>
> Alan,
>
> you didn't answer my question. Besides the personal
> interest and fun, where there any technical reasons why
> Xquery/XSLT wouldn't have been the right choice ?
>
> Instead of writing Java over SAX, isn't it more convenient
> to write:
>
> for $x in //foobar
> where some:predicate($x)
> return my:function($x)
I'd rather write
[ myfunction(x) for x in root.xpath('//foobar') if somepredicate(x) ]
This works *as is* today in Amara toolkit, and is pretty efficient.
So why would I (or you) expect the Python developer to have to learn
some complex, entirely new programming language to achieve the same
goal?
> and leave the smart streaming strategies to implementors
> to figure out ?
There are smart strategists implementing systems other than XQuery, you
know.
> Did you try XQuery/XSLT and fail ? If yes, where did they
> fell short ?
I'd rather ask you, where there areas where all the many native XML
processing facilities failed for you, when you decided to develop
XQuery?
Python and Java came before XQuery, so I don't see why they have to be
the ones to justify themselves.
--
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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