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

SDD bogus

  • From: David Megginson <ak117@f...>
  • To: xml-dev <xml-dev@i...>
  • Date: Fri, 8 May 1998 09:51:39 -0400

perl sdd
Paul Prescod writes:

 > Is the standalone document declaration bogus and perhaps dangerous?

Yes and yes.  

The problem, I think, came from the mistaken idea that people
(i.e. desperate Perl hackers) would write custom parsers for each XML
application (like RDF), and that these people would not want to deal
with seemingly difficult problems like external entity resolution.  

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.

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.

As many XML parser writers have shown, resolving external entities is
one of the easiest parts of XML (especially in higher-level languages
like Java or Perl, and, I presume, Python).  Allowing parsers to skip
external entities -- rather than simplifying XML -- ended up making it
much more complicated, and as you point it, the standalone declaration
really doesn't help things.

All the best,


David Megginson                 ak117@f...
Microstar Software Ltd.         dmeggins@m...

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...>


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.