[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: XPath and XPattern (was Re: More on tamingSAX)

xpath vs xpattern
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


Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
First Name
Last Name
Subscribe in XML format
RSS 2.0
Atom 0.3

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.

Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.