Synergy Between Spring AOP and AspectJ

synergy (synergies)
If there is synergy between two or more organizations or groups, they are more successful when they work together than when they work separately. (BUSINESS)

Much has changed in the AOP framework landscape in the past few years. There has been some housecleaning among the AOP frameworks, resulting in some frameworks merging and others going extinct. In 2005, the AspectWerkz project merged with AspectJ, marking the last significant activity in the AOP world and leaving us with three dominant AOP frameworks:

• AspectJ (http://eclipse.org/aspectj)
• JBoss AOP (http://labs.jboss.com/portal/jbossaop/index.html)
• Spring AOP (http://www.springframework.org)

Since this is a Spring book, we will, of course, focus on Spring AOP. Even so, there's a lot of synergy between the Spring and AspectJ projects, and the AOP support in Spring 2.0 borrows a lot from the AspectJ project. In fact, the <aop:spring-configured /> configuration element takes advantage of AspectJ's support for constructor pointcuts and load-time weaving.