JBoss.org Community Documentation
The Aspect Class is a plain Java class that can define zero or more advices, pointcuts, and/or mixins.
public class Aspect { public Object trace(Invocation invocation) throws Throwable { try { System.out.println("Entering anything"); return invocation.invokeNext(); // proceed to next advice or actual call } finally { System.out.println("Leaving anything"); } } }
The example above is of an advice
trace
that traces calls to any type of joinpoint.
Notice that Invocation
objects are the runtime encapsulation of joinpoints.
The method invocation.invokeNext()
is used to drive the advice chain. It either calls
the next advice in the chain, or does the actual method or constructor invocation.