[aspectj-users] Pointcut primitive "this(Point)" and interfaces

[Jimisola Laursen <lists@xxxxxxxxxxxx>]

Hi!

The AspectJ 5 Quick Reference reads:

this(Point): any join poit where the currently executing object is an
instance of Point

What does "instance of Point" match?

1. class: public class Point
2. sub-class of class: public class MyPoint extends Point
3. or abstract class:  public class MyPoint extends AbstractPoint
4. interface: public class MyPoint implements Point


I have a simple pointcut that should match methods that:

 1. are in/under package se.example
 2. has the annotation @Transactional
 3. implements the interface MyInterface

    pointcut TRANSACTIONAL(Transactional transactionalAnnotation):
        execution(@Transactional * se.example..*(..))
        && @annotation(transactionalAnnotation);
        && this(MyInterface);
 
    Object around(final Transactional transactional) throws StorageException
: TRANSACTIONAL(transactional) 
    {
       // here I actually log using log4j "Entering around(Transactional = "
+ transactional + ");
      MyInterface myInterface = (MyInterace)thisJoinPoint.getThis(); 
        ...
    }



I have a class that implements MyInterface and that has a method annotated
with the Transactional annotation. 

This method doesn't cause the around advice to run  when I use the above
pointcut. At least not always. It ran two times out of probably 50 and I
honestly don't think that I changed anything... But, who knows?

More importantly, if I remove "&& this(MyInterface)" from the pointcut then
the around advice runs. I am a 100% sure that the class implements
MyInterface and also the line

      MyInterface myInterface = (MyInterace)thisJoinPoint.getThis(); 

doesn't cause a ClassCastException.

Why doesn't my around advice run with "&& this(MyInterface)" in the
pointcut.

Regards,
Jimisola

Does it have to be an actual object? Can it not be an implemented interface.


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