Java Pub House

Episode 8. What's your Aspect?

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In this episode we go over Aspects (and AspectJ), what really is, and when to use them. It turns out, that there is nothing misterious about them! We also cover how to set-up Aspects for J2SE so you can start using them immediately!

Questions, feedback or comments! [email protected]

VM Parameter -javaagent:dep/aspectjweaver.jar

Example Aspect

@Aspectpublic class OrderAspect { @Before("execution(* *.*(Order))") // must qualify public void anyCall() { System.out.println("Was called from anywhere"); }}

Example aop.xml file

Example Folder Structure

src | |-META-INF | |-aop.xml

References:

http://www.eclipse.org/aspectj/doc/released/adk15notebook/ataspectj-pcadvice.html

http://www.eclipse.org/aspectj/doc/next/quick5.pdf

http://blog.espenberntsen.net/2010/03/20/aspectj-cheat-sheet/

(Using aspects with annotations) http://stackoverflow.com/questions/2011089/aspectj-pointcut-for-all-methods-of-a-class-with-specific-annotation

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Java Pub HouseBy Freddy Guime & Bob Paulin
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