Well we have open sourced the Arjuna WS-Context implementation, which
was used as one of the specification reference implementations for
compliance when writing the specification. It's not in a repo yet and
we'd like to do more work on it in bringing it up to date: the
specification changed a bit in the latter few months. Let me check.
Maybe we can donate it ;-) I'd like to see WS-Context used more
widely too.
Mark.
On 20 Dec 2006, at 17:43, Sergey Beryozkin wrote:
+1 to having a CXF-based WS-Context implementation...
IMHO this is one of the best specs in the WS space, simple and
powerful....Few years ago I was concerned about how to write
factory-based applications in the web services world...So one
option is to allocate a resource per every service which is not
acceptable for those pursuing coarser-grained approach, WS-Context
would help here too...Contexts do not necessarily have to be
transaction or security-related, they do not need to belong to
higher-level activities.... Something like 'orderId' is also a
context as it identifies a specific application activity, and as
such it can be passed as a WS-Context header....People can still
use a familiar factory pattern in the client code but under the
hood there'll be communicating with maximum 2 services....
Cheers, Sergey
On 12 Oct 2006, at 20:41, Sakala, Adinarayana wrote:
Hi Eric and Mark,
It would be a great opportunity for CXF community and Apache to
participate in interop testing. I wish we had a WS-Context
implementation in place :) either we wrote or somebody has given
to us
to participate in the interop testing. Certainly something to
add to the
CXF roadmap for consideration in my opinion.
First off, dumb question, Are there any issues with CXF
implementing or
supporting this oasis spec?
No, the specifications are under a very loose IP policy: anyone
can take the specifications and provide a compliant implementation.
I will go read more about WS-Context to understand it more, but
here are
some questions that may be worth answering.
Are there any specs that are similar to WS-Context?
No. The only thing that comes close for session management would
be WS-A and the use of ReferenceParameters. But if you check out
one of the links I sent originally, you'll see why we think this
is a very bad idea.
Can somebody comment on how this specification relates to
WS-ResourceFramework?
Don't get me started on WS-RF ;-) I was one of the original
supporters of that effort, but it's not a good example of SOA
principles in Web Services! It's not related to WS-Context.
Is SCA planning to leverage WS-Context spec? If so, it might be
worth
opening a dialogue with Tuscany folks, so that it is mutually
beneficial
for both the projects.
There has been talk about how you could do sessions and
conversations in SCA and WS-Context has come up several times as
one way that is recommended. The recent specifications reference
WS-Context as well.
How widely is this spec adopted or used in the industry? (just
curious...)
It's referenced by WS-A, SCA and several groups within OASIS. The
interoperability effort is the last stop before making it a
standard. It's supported by Oracle, Redhat, Fujitsu, Sun and
IONA, to name a few. But without the official backing of IBM and
MSFT it's always difficult to say in the world of Web Services ;-)
Mark, Does RedHat have any plans on opensourcing WS-Context
implementation?
Yes. It's already open sourced in that there is an older version
covered by LGPL. However, it's not in any repository yet.
Asking this question because, there is no point in creating one
if reuse
is a possibility. I am sure CXF community would love to get one :)
Understood. However, I believe the rules in Apache would preclude
a dependency on any non-Apache licence code. True?
Mark.
Regards,
Adi
-----Original Message-----
From: Newcomer, Eric
Sent: Thursday, October 12, 2006 12:57 PM
To: [email protected]
Subject: RE: WS-Context implementation
Sorry - forgot to also mention the potential interest from SCA
and/or
Tuscany in the use of WS-Context for a way in which to manage
persistent
sessions for Web services.
Eric
-----Original Message-----
From: Newcomer, Eric
Sent: Thursday, October 12, 2006 12:51 PM
To: [email protected]
Subject: RE: WS-Context implementation
As co-chair of the OASIS WS-CAF committee I'd like to mention the
opportunity for CXF to participate in the interop testing for
the most
recent version of the WS-Context specification, found on the TC
page
(the link in Mark's email) as part of its progression toward OASIS
standard.
Eric
-----Original Message-----
From: Mark Little [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 12, 2006 7:24 AM
To: [email protected]
Subject: WS-Context implementation
Has anyone considered doing a WS-Context (http://www.oasis-
open.org/
committees/download.php/19659/WS-Context.zip) implementation for
CXF?
There's a pretty good write-up on it and its relationship to WS-A
here
http://www.idealliance.org/proceedings/xml05/abstracts/paper54.HTML
Mark.
