An Event-driven Approach for the Separation of Concerns

摘要

This paper presents an event-driven approach for the separation of concerns in software systems. We introduce the EventJ framework that provides an event-driven extension to the Java programming language. The paper describes a general methodology that can be used to identify the cross-cutting concerns and separate them from the main functionality using events and event handlers. We discuss the pre-requisites to perform this change and illustrate it with a concrete example. Finally, we make a comparison between the event-driven approach and the aspect-oriented one, and conclude that the use of events to separate concerns has a positive effect on software quality attributes such as maintainability, extensibility and reusability.