Presentations

AspectJ for Spring Developers

This talk introduces AspectJ to developers experienced with Spring and explains core AspectJ constructs. Attendees will learn the essentials of AspectJ and how to use it to create even simpler Spring-based applications.

Combine Spring with AspectJ and you wield enormous power to simplify your enterprise applications. This talk will introduce AspectJ to developers experienced with Spring and explain core AspectJ constructs. The talk will also show several examples that you can readily use in your enterprise applications.

Birds of a Feather: Aspect Oriented Programming in the Enterprise

Come to this BOF for a lively discussion of AOP in the Enterprise with Ramnivas Laddad, Adrian Colyer, and Jennifer Hickey.

Architecture Enforcement with AspectJ and Other Tools

Aspect-oriented programming (AOP) is a proven paradigm for enforcing broad organizational policies. In this session, Ramivas and Alef will explore the definition and enforcement of software architecture policies to help keep a code base clean. They will present several reusable examples you can apply within your own organization to catch architectural violations. They will also demo the best features of the leading off-the-shelf architectural enforcement tools.

Architectural policies originate from a variety of sources: consensus among developer community about generally accepted programming idioms and best practices, your own ideas on what a good architecture looks like, requirements of the underlying framework, core architecture of the specific project, and specific design choices made by the team on a project. In short, policies represent accumulated knowledge to create better quality software. If there is no enforcement, the errors may go undetected during development and show up only in the deployed system. Often if one error is allowed to go undetected, the associate code often ends up mistaken as design pattern.

In this session, we look at ways to implement architectural enforcement policies along with many reusable examples. Attendees will learn to define policies, and ensure architectural violations are detected immediately upon their introduction into a code base leading to a solid implementation that is faithful to its design.

Leveraging Annotations with AOP

This session explores using custom annotations to add cross-cutting behavior to your applications. We will examine several concrete use cases for defining your own custom annotations, then show how to consume those annotations at runtime to apply new functionality.

Specifying metadata using annotations has gained huge popularity since its introduction in Java 5. However, the story on consuming annotations is not as clear. Reading and processing annotation is still a complex process often requiring you to understand byte-code manipulation tools and their low-level API. As a result, most developers shy away from using custom annotations, limiting their usages of annotations only those prescribed by frameworks. The result is missed opportunities for programming simplification.

In this session, we explore how AOP can make it a simple task to consume annotation in a powerful manner. We also examines best practices in designing custom annotations. The examples discussed will cover a wide range of domains including auditing, monitoring, security, transaction management, and policy enforcement.