I have written an example on how to use servicemix to expose and
transparently call pojo services with servicemix.
When I started with servicemix I had some problems finding informations
and sample code on how to implement pojo services.
Guillaume gave me the hint to start with the unit tests from the
servicemix sources. So this was my starting point.
The example can also be helpful if you want to embed servicemix in your
own code and use it as a fault tolerant and flexible remoting
technology. I will shortly publish another example that shows exactly
how to use clustering and failover.
I would be very interested in your comments about the example.
Best regards
Christian
Pojo Service example
--------------------
This example shows the use of the Jsr181 component to create
services from pojos and call them transparently via a dynamic proxy.
The example shows two ways to do this.
The first way is by setting up servicemix directly in java. This is a
great oportunity to
get deeper understanding of the wrokings of servicemix as you can debug
through the whole
example. You can even debug into the servicemix code and see how it works.
The second way is by configuring servicemix with spring. This is what
you probably will do in production.
The configuration in spring shows you how to embed servicemix into your
existing spring based application.
So servicemix can act like an additional remoting layer for spring.
The third way would be to make a service assembly and deploy it to a
servicemix container. This is not shown
at the moment. The wsdl first example of the distro show you a similar
example that uses this method.
You can find a current version of this example on my site:
http://www.liquid-reality.de/main/projects/servicemix/pojoexample.zip
Requisites
----------
You should have maven installed.
Either Your local repository should contain servicemix if you built the
sources of servicemix
or you should have configured a repository that contains the maven 3.0.1
packages.
1) Download ActiveMQ
Download the binary for windows from the following site
http://www.activemq.org/site/activemq-410-release.html
2) Extract the zip
3) Start JMS Server
call bin\activemq.bat
You now have a running jms server on your local machine
either start the example in eclipse
-----------------------------------
1) Import the example into eclipse
call "mvn eclipse:eclipse" from the example dir.
Start eclipse
Configure the classpath variable M2_REPO to your local maven repo
Import the Project in eclipse.
2) Start PojoServer
Debug as java application
3) Start PojoClient
Debug as java application
4) Watch the console logs
Compile and install example standalone
--------------------------------------
1) Compile and install the example
mvn install
2)
start "pojoserver.bat"
or
start "pojoserverspring.bat"
3)
start "pojoclient.bat"
or
start "pojoclientspring.bat"
The client should run through and tell you the example completed sucessfully
4) Hint
The example will throw a javax.naming.NoInitialContextException. This
does not mean anything is going wrong.
I only did not configure the initial context and did not find a way to
suppress this message.
See issue (http://issues.apache.org/activemq/browse/SM-739) if you are
missing complextypes in your wsdl.
--
Christian Schneider
---
http://www.liquid-reality.de
