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Pim, David, Thank you both for your thoughts.
Do you think this is something that the Holodeck or any other team might want
to address in future? With ebMS 3.0 addressing the client-pull
model, there seemed to be an acknowledgment that this was an important pattern
in making ebMS “SMB-friendly”. Having easy, lightweight tools
for doing that would be key for an SMB-focused developer like my company to adopt. Even if no existing project
includes a set of client comms libraries, I’d be interested in your
thoughts as to what open source Java libraries or tools might make most sense.
(Our technology is a standalone java client – using JRE not JDK –
so thanks David, but javascript probably isn’t the right technology). That
said, given other current priorities on this end, it’d have to be pretty
much turnkey – not much appetite here for tweaking or ebMS-specific
development I’m afraid. Best regards, Roger From: Pim van der Eijk
[mailto:lists@sonnenglanz.net] Hello Roger, I'm not aware of simpler ebMS 3.0 client-only
implementations. The implementations I know about support both
the client and server functionality. If they offer a client-only option, it is
a lower-cost commercial option with turned off functionality that doesn't
reduce the code base size. SOAP libraries for security and
reliability needed to implement ebMS tend to depend on these larger SOAP
frameworks. The AS4 profile doesn't require reliable messaging, but still
does require WS-Security. I agree that an ebMS 3.0 client
profile that drops even that requirement (and just uses TLS) seems very simple
to implement. Pim From: Roger Bass [mailto:roger@traxian.com] David, (or perhaps Jacques / Pim?) My company, Traxian, is looking at some updates to our product
to improve reliability of the client-pull mechanism. The client software
polls our server to retrieve messages from a user’s mailbox (i.e.
it’s entirely internal to us). Most likely a small, proprietary
enhancement will fit the bill, but this prompted me again to look at possible
ebMS open source products / libraries for implementing this. Since I
noted ebMS 3.0 now extends to the client-pull message pattern, I wondered if
code implementing that might now be available. (Code that included an
embedded data store for transactions using a lightweight embedded database on
the client side might also be a plus, though it’s not a critical
requirement right now). I’m not finding anything quite like that – does
it exist? What I do see is the fairly recently released Holodeck
project (May 2010) – but despite being ebMS 3.0 based, it seems not to
include any client-side implementation (with tomcat and axis2 as prerequisites,
even for the ‘light’ version). The Hermes / freebxml project includes the ebMail GUI
client, but it seems designed more as a real GUI with a plug-in model, rather
than as a set of libraries to use as a new messaging core for an existing
product. BTW, for those interested, Traxian’s is an easy
e-commerce integration solution for B2B and B2C transactions, initially focused
on QuickBooks. It includes a “social / viral” model for
radically easy, low-friction setup. Regards, Roger Bass |