[aspectj-users] Change propagation, AspectJ More options

["Levente Mészáros" <levente.meszaros@xxxxxxxxx>]

Hi,

I don't know much about AspectJ, but I'm wondering about something in
Java like this one at http://common-lisp.net/project/computed-class.


Is it possible to write some AspectJ code (and add some pointcuts,
etc.) to
transform:


 public Integer a;


into:


 private ComputedState<Integer> aState = new
ComputedState<Integer>();


 public Integer getA() {
         return aState.getValue();
 }


 public void setA(int a) {
         aState.setValue(a);
 }


and transform:


public Integer getB() {
         return getA() + 1;
}


into:


 private ComputedState<Integer> bState;


 public int getB() {
         return bState.recomputeIfInvalidAs(new IComputation() {
                 public Object compute() {
                         return getA() + 1;
                 }
         });
 }


The rest is simple and could be done in Java too and may eliminate
lots of listeners...

levy


--
There's no perfectoin