Apologies for any backlog of email responses, but
I've been flying to XML 2003 today. Just to second Greg's email - LRA is based
on Sagas and similar to Open Nested transactions.
Mark.
----
Mark Little,
Chief Architect,
Transactions,
Arjuna Technologies Ltd.
www.arjuna.com
----- Original Message -----
From:
Newcomer,
Eric
To: Guy Pardon ; Greg
Pavlik
Cc: Mark Little ; Robin Cover ; ;
Sent: Wednesday, December 10, 2003 7:58
PM
Subject: RE: [ws-caf] Patent
Issue(s)
On
the surface, it does not seem to confict since it requires a
specific implementation of Java classes and operations that create the
transaction system, whereas the WS-CAF approach is to wrap or abstract the
transaction systems (i.e. not to create one).
-----Original Message-----
From: Guy Pardon
[mailto:]
Sent: Wednesday, December 10, 2003 1:32
PM
To: Greg Pavlik
Cc: Mark Little; Robin Cover;
Newcomer, Eric; ;
Subject:
Re: [ws-caf] Patent Issue(s)
Hi,
FYI, here is the patent application's description:
http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=pardon.IN.&OS=IN/pardon&RS=IN/pardon
Guy
On woensdag, dec 10, 2003, at 15:07 Europe/Brussels, Greg Pavlik wrote:
Well, the LRA model as I read it seems to be a
relatively close mapping of sagas, which were as far as I know first
described in 1987 by Garcia-Molina. I think it would be useful if someone
took the action to provide a more detailed breakdown of what exactly is at
issue for the group, because it's not obvious to me after a cursory review
of the CheeTah papers.
Guy Pardon wrote:
Hi everyone,
The VLDB paper is attached. It describes composite
systems in the CheeTah prototype (which served as the provisional
application for the US patent).
Concerning WS-CAF, I think there may be some
overlapping with the LRA model described in the TXM spec.
It was not my intention to raise panic and 'warn'
anybody, rather just to point out that the patent exists (which is, I
believe, required on behalf of TC members).
Best,
Guy
On dinsdag, dec 9, 2003, at 20:27 Europe/Brussels,
Mark Little wrote:
Robin, thanks. I think a description from Guy about
how he thinks any patent
relevant to this paper may conflict with WS-CAF is in
order though. Many
companies have been doing composite
applications/transactions for years so
I'd like to know what aspect of CheeTah may either
impact WS-CAF now or in
the future. This is certainly the first I've heard of
CheeTah so from an
Arjuna perspective it certainly didn't influence
WS-CAF, but maybe Guy's
email is intended to just warn the TC in its future
directions?
Mark.
----- Original Message -----
From: "Robin Cover" <>
To: "Newcomer, Eric" <>
Cc: "Guy Pardon" <>; <>
Sent: Tuesday, December 09, 2003 7:08 PM
Subject: RE: [ws-caf] Patent Issue(s)
Perhaps:
CheeTah: a Lightweight Transaction Server for
Plug-and-Play Internet Data Management
-------------------------------------------
Guy Pardon, Gustavo Alonso.
-------------------------------------------
Abstract:
The ability to maintain transactional interaction
in a distributed system has proven to be a key
feature
in information systems. Unfortunately, as technology
moves
towards more distribution and decentralization, it
becomes
increasingly difficult to use existing transactional
tools. In fact, current solutions are entirely
unsuitable
for what we call composite systems. Composite systems
can be characterized as a collection of distributed,
autonomous components, linked in an arbitrary
configuration.
In this paper, we describe CheeTah, a Java based set
of
tools for building composite components capable of
interacting transactionally in arbitrary, dynamically
changing configurations. We describe the technology
provided,
how designers would use it to build composite
transactional
systems, and examine in detail the performance of the
resulting solution. Among the results we have
achieved,
the performance and the simplicity of use are of
particular
interest.
http://www.inf.ethz.ch/department/IS/iks/publications/pa2000.html
http://www.inf.ethz.ch/department/IS/iks/publications/files/pa2000.pdf
-----------------------------------------------------
Robin Cover
XML Cover Pages
WWW: http://xml.coverpages.org
Newsletter: http://xml.coverpages.org/newsletter.html
On Tue, 9 Dec 2003, Newcomer, Eric wrote:
Guy,
To second Mark's email, can you please also send
additional information
about the patent, such as the VLDB paper you mention.
Thanks,
Eric
-----Original Message-----
From: Guy Pardon [mailto:]
Sent: Tuesday, December 09, 2003 9:53 AM
To:
Subject: [ws-caf] Patent Issue(s)
Hi all,
As a TC member it is my duty to report that there
exists a US patent (US
patent application 09/682,969 -- finally approved
about two months ago)
concerning composite systems and an additional
European application being in
process. This patent is probably relevant to the CAF
specs (and most likely
to BTP as well).
Basically, the patent is an extension of the
Composite Systems VLDB
paper we (Gustavo Alonso and I) had at VLDB2000.
Best,
Guy
Dr. Guy Pardon ( )
Atomikos: Your Partner for Reliable eBusiness
Coordination
http://www.atomikos.com/
The information in this email is confidential and
only meant for the
addressee(s). The content of this email is informal
and will not be legally
binding for Atomikos.
Dr. Guy Pardon ( )
Atomikos: Your Partner for Reliable eBusiness
Coordination
http://www.atomikos.com/
The information in this email is confidential and
only meant for the addressee(s). The content of this email is informal and
will not be legally binding for Atomikos.
Dr. Guy Pardon ( )
Atomikos: Your Partner for Reliable eBusiness
Coordination
http://www.atomikos.com/
The information in this email is confidential
and only meant for the addressee(s). The content of this email is informal
and will not be legally binding for Atomikos.
