[
Lists Home |
Date Index |
Thread Index
]
- From: "Didier PH Martin" <martind@netfolder.com>
- To: "Miles Sabin" <msabin@cromwellmedia.co.uk>,<xml-dev@ic.ac.uk>
- Date: Tue, 18 Jan 2000 03:17:35 -0500
Hi Sabin,
Sabin said:
If you've got CORBA/RMI/DCOM clients and servers on both ends
why would you want to take a detour via XML over HTTP (other
than for firewall traversal). The generated XML would be about
as illuminating (and as helpful for interoperation) as running
a binary executable through a disassembler.
I think this is a case of horses for courses ... both XML over
HTTP and CORBA/RMI/DCOM have useful jobs to do, but I don't
think either can make the other redundant.
Didier replies:
There is an hidden asset in using XML as a marshaling language. For
instance, an object's content can be encoded as an element. If the object at
one end is either a CORBA or a DCOM objects equipped with a stub to decode
the marshaled XML format back to the object's value, the CORBA/DCOM object
can process it and return an answer...as an XML formatted document. So far,
so good, you probably made the inference that the client is also a
CORBA/DCOM object. It could be the case, but it could as well be a browser
that crated an XML document to be sent to the remote object. Moreover, the
middleware may as well always include a <xml-stylesheet> processing
instruction. A client object may do nothing with it but a browser would.
The important thing to see here, is that if we use a common format for
either document or data, then data could be seen as a document. For
instance, the marshaled content usually opaque can be seen as a document and
displayed in a browser. Or a document could be transformed and fed to a
CORBA/DCOM object. The end result versatility and a huge paradigm shift to
do ;-)
Cheers
Didier PH Martin
----------------------------------------------
Email: martind@netfolder.com
Conferences: Web New York (http://www.mfweb.com)
Book to come soon: XML Pro published by Wrox Press
Products: http://www.netfolder.com
xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ or CD-ROM/ISBN 981-02-3594-1
Please note: New list subscriptions now closed in preparation for transfer to OASIS.
|