Hi,
I finally solved my problems now...Thank you, Kabir, for your help. It was
somewhat tricky, although everything was available in tutorials, but some of
them were contradictory etc.
So for those of you, who are beginners of implementing aop, here is what I did
for implementing my first aspect:
1. Install JBoss-4.0.0 (download the zip-file from jboss.org) and JDK1.5
2. delete the jboss-aop.deployer-file from server/all/deploy
Note: I had to use the jboss-all-configuration, aop did not work with the
default-configuration on my system.
3. Download jboss-aop_1.0.0-FINAL.zip from jboss.org and unzip it. Copy the
whole jboss-aop-jdk50.deployer directory into your server/all/deploy directory.
(If you are using jdk1.4 you have to copy the jboss-aop.deployer-directory)
4. Now, modify the jboss-service.xml-file in the
jboss-aop-jdk50.deployer/META-INF directory. The only thing you have to do is
to set the "EnableTransformer"-Attribute to TRUE. This will cause jboss to take
a longer time when starting up.
Note: On my system it was not enough to simply set the same attribute to TRUE
on the jmx-console.
5. Start the all-configuration by the command
run -c all
on your console.
6. The packaging looks like this:
HelloWorld.ear contains:
-HelloWorld.jar // here are simple EnterpriseBeans that say "HelloWorld"
-Aspect.aop // this is a jar-file ending with the suffix .aop, which contains
the aspect code
-Maybe you also add .war-files if you are implementing a servlet
-finally a META-INF/application.xml-file
My application.xml-file looks like this:
<?xml version='1.0' encoding='UTF-8'?>
| <!DOCTYPE application PUBLIC '-//Sun Microsystems, Inc.//DTD J2EE
Application 1.2//EN'
|
'http://java.sun.com/j2ee/dtds/application_1_2.dtd'>
|
| <application>
| <display-name>AOP in JBoss example</display-name>
| <module>
| <ejb>HelloWorld.jar</ejb>
| </module>
| <module>
| <java>Aspect.aop</java>
| </module>
| </application>
|
Just for completeness, the HelloWorld.jar contains:
- HelloWorld.class //Remote Interface
- HelloWorldBean.class // Your enterprise bean
- HelloWorldHome.class // Home-Interface
- META-INF/ejb-jar.xml // deployment-descriptor for the beans
and my Aspect.aop-file contains:
- aspect.class // Aspect code as described in the tutorials
- META-INF/jboss-aop.xml // AOP-Deployment-descriptor
Note:
Make sure that, when trying to set an aspect on a bean-class or just one method
of a bean-class for example, the -tag - or other tags in your
jboss-aop.xml-file - must describe the whole package-structure of your code, to
find the correct class.
7. Copy this .ear-file to the server/all/deploy-directory to deploy it on the
server
8. Run your client
Of course, there are different methods to make it work, but this on fit for me.
I hope it might help you...
OLLI
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