Lists Home |
Date Index |
Jeff Rafter wrote:
>> I'd say only the parent stack, or shallow but very wide documents become
>> resource hogs. An extension mechanism could allow implementations to
>> support sibling access, or perhaps that would be a matter of conformance
>> levels (a la DOM or XAPI).
> Are there a lot of use cases for a streamable but very wide document?
> I remember a thread here a while ago talking about the actual
> deployment of wide docs and it wasn't high. Not that I am arguing for
> preceding or against it-- I am just speculating.
I would ask the opposite question: is there a use case for streaming a
merely deep document? I'd think that wide documents are where the
performance and working set control of streaming is especially
important. The recent XML vs. CSV flame-war that I read about in XML
Deviant sounds like it makes the case pretty well.
Any way, to pick just one drop from the ocean, if I have a large address
book, I would expect it to be very wide, and I would probably want to
stream to process one entry at a time. In that case, I wouldn't want
systematic preceding axis support (though my application code might
accumulate interesting values from preceding nodes).
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