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

Re: XML and embedded compound data types (was "Why XML data typin is har

  • From: John Cowan <cowan@l...>
  • To: XML Dev <xml-dev@i...>
  • Date: Mon, 30 Nov 1998 13:18:14 -0500

deserialize from xml
Gabe Beged-Dov wrote:

> I have been reading the latest postings on XML data typing and want to throw
> out a different viewpoint. several caveats are that I haven't perused all of
> the archives to see if I'm tramping down well-worn paths.

Not well-worn, but not utterly novel either.

> The perspective is the possibly naive one that XML can/should be used to
> capture ALL of the structural aspects of a complex tree of data. Wherever a
> compound type occurs in the source data, it should be mapped to a
> corresponding compound type in XML.  A key heuristic to see if this approach
> is being adhered to is to see if any attribute  values or character data
> requires additional parsing by the application in order to deserialize
> additional structure.

A compromise which I proposed --- to resounding denunciation from all
(then existing) quarters --- was a facility overlaid on XML which would
remap specific local syntax characters, when found within the character
content of specified elements, to empty element tags.  Thus, given the
following XML:

	<?map map1 ":" colon?>
	<?map map1 "T" time?>
	<?map map1 "-" dash?>
	<?map map1 "." dot?>
	<?apply-map map1 date?>
	...
	<date>1998-04-05T15:22:23.24</date>

the application would receive the SAX or DOM equivalent of:

	<date>1998<dash/>04<dash/>05<time/>
		15<colon/>22<colon/>23<dot/>24</date>

This is level 1 of my "Local Markup" proposal; level 2 provides
for nested as well as empty tags generated by characters,
by allowing for prioritization of local markup characters.
Only single characters are supported, but since there are
65000 of them, that should be sufficient.

SGML had something like this, but much more powerful/flexible/
hard to parse.

-- 
John Cowan	http://www.ccil.org/~cowan		cowan@c...
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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...)


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.