AOP Demo in Java

A demo showing aspect oriented programming in Java without third party frameworks like Spring AOP.

Before

This example shows a simple library (data model inaccurate) with a REST endpoint for books and a JSF website to create a new reservation. The problem is that there are functionalities spread across different classes (logging is implemented in every service).

Goal

Interceptors

• at.htl.aopdemo.interceptor.LoggingInterceptor
• at.htl.aopdemo.interceptor.MonitoringInterceptor

Decorators

• at.htl.aopdemo.decorators.UmlautLoanService