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Re: Streaming XML (WAS: More on taming SAX (was Re: A

• To: Daniela Florescu <dflorescu@m...>
• Subject: Re: Streaming XML (WAS: More on taming SAX (was Re: ANN: Amara XML Toolkit 0.9.0))
• From: Uche Ogbuji <Uche.Ogbuji@f...>
• Date: Thu, 30 Dec 2004 12:43:46 -0700
• Cc: Alan Gutierrez <alan-xml-dev@e...>,Kevin Jones <kjouk@y...>, xml-dev@l...
• In-reply-to: <A445263E-584E-11D9-A33A-000393DC762C@m...>
• Organization: Fourthought, Inc.
• References: <1103757598.10272.67.camel@borgia> <20041226200008.GA27205@m...> <EED07622-5841-11D9-A33A-000393DC762C@m...> <200412272059.19559.kjouk@y...> <20041227211723.GE32346@m...> <A445263E-584E-11D9-A33A-000393DC762C@m...>

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

• References:
  • ANN: Amara XML Toolkit 0.9.0
    • From: Uche Ogbuji <uche.ogbuji@f...>
  • Re: More on taming SAX (was Re: ANN: Amara XML Toolkit 0.9.0)
    • From: Alan Gutierrez <alan-xml-dev@e...>
  • Re: Streaming XML (WAS: More on taming SAX (was Re: ANN: Amara XML Toolkit 0.9.0))
    • From: Daniela Florescu <dflorescu@m...>
  • Re: Streaming XML (WAS: More on taming SAX (was Re: ANN: Amara XML Toolkit 0.9.0))
    • From: Kevin Jones <kjouk@y...>
  • Re: Streaming XML (WAS: More on taming SAX (was Re: ANN: Amara XML Toolkit 0.9.0))
    • From: Alan Gutierrez <alan-xml-dev@e...>
  • Re: Streaming XML (WAS: More on taming SAX (was Re: ANN: Amara XML Toolkit 0.9.0))
    • From: Daniela Florescu <dflorescu@m...>

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