[jboss-user] [JBoss AOP] - Re: Acting on class load

[fbrueseke]

Thanks for the quick answer.

So what I would have to do is:
- Implement my own class that conforms to the interface "java.lang.instrument.ClassFileTransformer"
- Register an object of that class with the PluggableInstrumentor
and then I'm ready to go?

So in code:
public class MyTransformer implements ClassFileTransformer
  | { 
  |   public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, 
  |                           ProtectionDomain protectionDomain, byte[] classfileBuffer) 
  |                         throws IllegalClassFormatException
  |   {
  |     //do something ...
  |   }
  | }
  | public class someOtherClass
  | { //all static for simplicity
  |   public static MyTransformer transformer= new MyTransformer();
  |   static{
  |     PluggableInstrumentor.getInstrumentor().addTransformer(transformer)
  |   }
  | }

Is that correct?

Kind regards
Frank

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