for an interesting non-presentational use of XML check www.wddx.org (that's
web distributed data exchange)
its cool -- lets you move lightweight objects around over the network using
HTTP.
brad
-----Original Message-----
From: Arthur Alexander [mailto:[EMAIL PROTECTED]]
Sent: 22 March 1999 01:38
To: [EMAIL PROTECTED]
Subject: Re: JSP vs XML
That would be true if all XML was designed for
expressing data related to pages of content, that
could be parsed by a style sheet and given layout
characteristics. In fact, this was the origin of
the focus of the XML/XSL design, as well as that
of SGML/HTML. But they have taken on larger roles
due to the ability of the format to encapsulate
structure and meta-data along with content.
Today XML is quickly replacing the older EDI
(electronic document interface) specifications by
the ISO (X21 and others, I believe). It is going
beyond that and providing a packaging mechanic for
any structured data, including embedded data, and
what are called 'data islands'.
This provides structure similar to that envisioned
in the model of MS COM OLE (Object Linking and
Embedding) where the idea is that you wrap all
related elements of content into a general container
that is meant to be one expression of how content
from many locations and formats relate to one
another. The individual content islands have meaning
that is quite separate from the container, and have
renderings that are not native to that container.
Having a general model and mechanic for expressing
that model (in java particularly) will become quite
handy to anyone working in such an environment,
whether that be commerce oriented or otherwise.
I would further speculate that if XML goes on to
gather onto itself the concept of behaviours, as
has the HTML spec., than we could be looking at
the birth of a new object model, one that is
expressed in text streams and an open standard.
Java would then be performing the work of a
'bridge' between object environments, one that
runs (hopefully) considerably faster than a parser
would, but is not really an "OPEN" standard in
the true sense of the word.
Many organizations are at work right now defining
this object based infrastructure, some only in the
sense of commerce communications data standards, and
others in the more object oriented sense, of having
an XML data island conform to an object data stream
model, and having an object backed standard to
reconstitute the stream and give it the necessary
behavioural characteristics.
An as yet unofficial effort that is being hinted at
in the press is related to Microsoft moving their
Active Data Object model (ADO) into an XML based
standard. We some hint of this in ADO 2.1 and the
new IE5 DOM. I still believe that Java has the
upper hand in the ability to create more open
standards and have them accepted and touted in
the press and industry quicker, but the merging of
Java, and other technologies such as COM, with XML
should not be quickly discounted.
-----Original Message-----
From: A mailing list about Java Server Pages specification
and reference
[mailto:[EMAIL PROTECTED]]On Behalf Of Tom Clarke
Sent: Sunday, March 21, 1999 2:23 PM
To: [EMAIL PROTECTED]
Subject: Re: JSP vs XML
It occurs to me that a JSP/XML combination is unneccessary.
The main reason for JSPs existance is to allow an 'HTML
presentation expert'
to embed snippets of code. With XML, presentation has
already been separated
out - the presentation expert would build stylesheets - and
embedding the
XML in directly a Servlet or CGI would have few
disadvantages.
Tom
Tom Clarke 665 Broadway
Senior Technical Consultant New York, NY 10012
AGENCY.COM V 212.358.8220 x2798
F 212.982.3105
B [EMAIL PROTECTED]
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