You can use JBoss AOP (ejb3-interceptors-aop.xml) or use standard EJB3 interceptors.
The examples are part of release - not the last one, but some previous, since they haven't changed during EJB3, Spring2.0 progress.
Hello. I also read the article and downloaded the jar, but I noticed that no source files are available? Is there a way to get to them?