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

RE: My report on experiments with unused namespaces

  • From: "Costello, Roger L." <costello@mitre.org>
  • To: "xml-dev@lists.xml.org" <xml-dev@lists.xml.org>
  • Date: Wed, 15 Sep 2010 16:43:01 -0400

RE:  My report on experiments with unused namespaces
Michael Kay wrote:

> I actually came across one usage of XML in which the namespace 
> declaration in
> 
> <a xmlns:v="http://www.x.com/"/>
> 
> was considered significant. They were using it, rather as some people 
> use processing instructions or comments, as a device for adding 
> information to an XML document (in this case, a kind of version 
> attribute) without having to modify the schema.

What do you think about that? Is it a good idea? 

Until I saw that I was ready to pronounce all unused namespaces as evil, for the reason Simon sighted:

  I have heard of hacks which used namespace 
  declarations as kind of a backchannel for 
  propagating information 

But, in light of the above usage I must reconsider.

What do you think, is it best practice to delete all unused namespaces from an XML instance document? Or are there genuinely legitimate uses for unused namespaces? Is it a (bad) hack to employ unused namespaces as a device for injecting unchecked, out-of-band information into the XML document?

/Roger



[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]


PURCHASE STYLUS STUDIO ONLINE TODAY!

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.
Email
First Name
Last Name
Company
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.