package be.ac.vub.object_annotations.examples.blackboard;


import be.ac.vub.object_annotations.AnnotationManager;
import be.ac.vub.object_annotations.examples.blackboard.annotations.Lock;


public aspect Locker {
	
	pointcut locked(Object t) : set(* *) && target(t) && if(AnnotationManager.isActive(t,Lock.class));
	
	
	Object around(Object t) : locked(t) {
		Lock lock = AnnotationManager.getAnnotationOf(t);
		if(lock.value())
			throw new IllegalStateException(t+" is locked!");
		else
			return proceed(t);
	}

}