If you have read my other articles about Joomla and automated binding or Using Doctrine in Joomla then you probably know that I also heavily develop in Java. Java heavily makes use of Annotations which combined with the principle of Aspect-oriented programming gives developers some great power in controlling the flow of the application. One thing we use regularly in our application are called Intercepting Filters. Basically you set a ‘insertion point’ where code can be executed before executing the application code. In this post I’ll show you an implementation like I have done in a hobby project of mine.