Hi David,
thanks for your first feedback.
My purpose is to avoid the usage of JEE, especially the EJBs. I would
like to replace my EJB by pure OSGi bundles, using Aries for JPA and
transactions.
So my question is:
- do we have an equivalent of EJB Session Stateful in OSGi (a kind of
stateful service) ?
- I haven't seen that in the specification (core or compendium) but
maybe it's in the roadmap. If not, don't you think it can be part of
compendium spec ?
- Maybe Apache Aries could provide this kind of module: stateful
service. I guess that the JEE application servers which use OSGi in
background (such as WebSphere 6, WebLogic 10 or Glassfish 3) have
implemented this feature to support EJB Session Stateful. I'm quite sure
that it's a plus value for Apache Aries to provide this kind of module
(we can name it "stateful OSGi services").
WDYT ?
Regards
JB
On 12/17/2010 04:17 AM, David Jencks wrote:
One possibility is to use geronimo 3. It's by no means done or completely
stable but except for web services most javaee 6 stuff is supported. When you
deploy a ee 6 artifact such as an ear it is transformed into an osgi bundle.
How fine grained are the bundles you want to end up with? Do you have ideas
about how you want the ejbs to be accessed such as through javaee jndi or as
osgi services?
thanks
david jencks
On Dec 16, 2010, at 5:24 AM, Jean-Baptiste Onofré wrote:
Hi all,
I'm migrating a JEE application suite (using EJB Entity, Session, MDB, JSP,
Servlet, etc) to OSGi running on Apache Karaf/Apache Aries/Apache ServiceMix.
Currently, I have the following architecture
WebContainer
JSP Views -> Servlet Controller
The controller makes a JNDI EJB lookup and RMI-IIOP call to
EJB Container
Facade EJB Session Stateful -> EJB Entities (CMP/BMP)
The Facade is a EJB Session Stateful which is responsible to start the
transaction (Required or RequiresNew) and store some informations.
In the HTTP session, I only store navigation informations, whereas in the
Facade EJB, I store some business information (such as the user connected, etc).
The HTTP Session contains a handler to the Facade.
I wonder how to refactor the Facade EJB Session Stateful to an OSGi bundle.
Any help is welcome.
Thanks
Regards
JB
