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

Stupid Question (was RE: XML doesn't deserve its "X".)

Stupid Question (was RE:  XML doesn't deserve its "X".)
3/5/2002 12:35:49 PM, Nicolas LEHUEN <nicolas.lehuen@u...> wrote:

>That's what I was suggesting. However, I don't see how this can be achieved
>without adding type information (AKA PSVI) to XML elements, and have a
>typing system that supports extensibility. Looks like we're reinventing OOP
>there, with XML as a data serialisation format.

This is in the spirit of "if we were doing this all over again ..." (or
"if we were furry little creatures eating dinosaur eggs and planning for
the post-asteroid world ...), not a troll:  
Why does XML carry around a label for every data value rather than 
getting it from an out-of-band "schema" (a la EDI or
ASN.1), but then use an out-of-band means to associate type information,
thus necessitating the PSVI?

In a programming language, we say

  class MyData {
	Int    foo;
	String bar;
	Date   baz; }
Serializing an instance to XML gives:

Why not just put the type information inline and
make XML more "self-describing" (please don't
shoot me ...) 
		<foo my:type="Int">0xffffffff</foo>
		<bar my:type="String">Someday/bar>
		<baz my:type="Date">20371031</baz>

or else just give it up and use
ASN.1 for both the out-of-band 
label and type information ?

I'm sure this is a religious war I missed, somehow ...
and like I said, it's a stupid question, please be


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.