AOP Concepts

As with most technologies, AOP comes with its own specific set of concepts and terms. It is important that you understand what these terms mean before we explain how to use AOP in an application. The following list explains the core concepts of AOP:

• Joinpoints: A joinpoint is a well-defined point during the execution of your application. Typical examples of joinpoints include a call to a method, the Method Invocation itself, class initialization, and object instantiation. Joinpoints are a core concept of AOP and define the points in your application at which you can insert additional logic using AOP.
• Advice: The code that is executed at a particular joinpoint is the advice. There are many different types of advice, such as before, which executes before the joinpoint, and after, which executes after it. In OOP, an advice comes in the form of a method within a class.