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   Re: [xml-dev] XPath and XPattern (was Re: [xml-dev] More on tamingSAX)

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On Thu, 2004-12-23 at 15:27 -0800, Wolfgang Hoschek wrote:
> For what it's worth, there's some documentation on 
> applicability/limitations/usage scenarios of a streaming path filter at 
> http://dsd.lbl.gov/nux/api/nux/xom/xquery/StreamingPathFilter.html
> It's pretty much one of the simplest approach one could possibly take 
> but nonetheless quite useful.
> It supports the child axis only, but hands fully built element subtrees 
> to an application defined callback handler, which makes writing even 
> complex handlers rather straightforward.

Interesting.  The original API for the Amara pushdom was that way: the
app registers a callback for each element subtree, but my early-peek
users found that too cumbersome, and asked if I could take advantage of
Python generators.  I'm glad I did, because it does simplify the client
code a lot.  It still uses call-backs under the covers, but these are
now all neatly wrapped by the main generator function.

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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