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

Re: SDD bogus

  • From: Paul Prescod <papresco@t...>
  • To: xml-dev <xml-dev@i...>
  • Date: Fri, 08 May 1998 15:35:49 -0400

regex based parsers performance
David Megginson wrote:
> 
> In the end, as one might have predicted, there is an impressive range
> of free XML processors available in several different programming
> languages: someone writing an RDF tool does not need to worry about
> the character and entity level of XML at all, and can work with XML
> easily through a more abstract interface such as the DOM or SAX.

That's a dangerous heresy, though one that I've promoted myself. If we
presume that programmers are going to work through parsers, then why
couldn't we leave GI's out of end tags and make XML substantially less
verbose (qualitatively at least)? Anyhow, many people argue with some
justification that regexp-based processing of the source files will still
be very important and popular. I'm not convinced that the cost/benefit
ratio is right, if we win over the awk hackers and annoy the document
authors, but we will see.

> So, we should let the authors decide -- if an author creates a
> document referencing external entities (including an external DTD
> subset), then the XML parser should handle them; if the author does
> not want to use external entities, then she can simply avoid
> referencing any.

Although I agree with Tim that this is a separate issue, I agree with you
that external entities should always be processed. It seems strange to me
to put responsibility for managing performance in the hands of the parser.
The parser writer has no information about the performance characteristics
of the entity vs. the importance of the data. Ignoring content should not
be the parser's perogative.

Consider Tim's example:

> Netscape today
> announced that &NSA;. In
> response, Microsoft
> issued the following
> statement: &MSA;.

As an author, I would be pretty damn [expletive deleted] off if a browser presented the
document that way, even if it uses nice icons for the entities. What does
the document mean with half of its text missing? If I've used external
entities in that way, then I have probably decided to do it for a good
reason. If I wanted a text inclusion that could be downloaded after a
mouseclick, that sounds like a special behaviour that could be
accomplished through XLink.

 Paul Prescod  - http://itrc.uwaterloo.ca/~papresco

Can we afford to feed that army, 
 while so many children are naked and hungry?
Can we afford to remain passive, 
 while that soldier-army is growing so massive?
  - "Gabby" Barbadian Calpysonian in "Boots"

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo@i... the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)


  • References:
    • SDD bogus
      • From: Paul Prescod <papresco@t...>
    • SDD bogus
      • From: David Megginson <ak117@f...>

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.