maxnrb / observerpattern_aspectj

Implementation of Observer / Observable pattern in Java with AspectJ

AspectJObserverPattern

Implementation of Observer / Observable pattern in Java with AspectJ

Usage

For example, you can do the following line to instantiate the object Point:

Point point = new Point(1, 1);

Then, you can instantiate observers:

PointObserver1 pointObserver1 = new PointObserver1();
PointObserver2 pointObserver2 = new PointObserver2();

Finally, you can add observsers to your observable point:

point.addObserver(pointObserver1);
point.addObserver(pointObserver2);

Implement new observable class

Go in src/Core/Observable.aj, and add the following line replacing Fraction with the name of your class:

declare parents: Fraction implements Subject;

Build and compile

1. Download and add AspectJ to your project, then add AspectJ dependencies:

   • IntelliJ Instructions

2. Set AJC compiler:

   • IntelliJ Instructions

Built With

• AspectJ - AspectJ is an aspect-oriented programming (AOP) extension for the Java programming language.