Java EE 6: Switching to CDI - Best resources

Question

I have a small yet complete Java EE 6 application at hand.

The traditional annotations are being used: @Resource, @EJB, @Singleton, @PostConstruct, @PreDestroy, @PersistenceContext, @ManagedBean, @ManagedProperty, @RequestScope, @ApplicationScope,...

I would like to evaluate whether it makes sense to introduce CDI, and to standardize on a common strategy for dependency injection, bean lifecycle management, etc.

Question: Does anybody know about good articles, examples or manuals that transform traditional Java EE 6 annotations into CDI ones?

Answer 1

Does anybody know about good articles, examples or manuals that transform traditional Java EE 6 annotations into CDI ones?

Not stricly about a "transformation" but very good resources IMO:

• The Dependency Injection in Java EE 6 series - By Reza Rahman

• The CDI RefCard on DZone

• A Hitchhikers Guide to Java EE 6 application setup series - By Nicklas Karlsson

• The Introducing the Java EE 6 Platform series

Related question

• Are @ManagedBean’s obsolete in JavaEE6 - because of @Named in CDI/Weld?

Answer 2

In my opinion, "switching" to CDI is no big deal. Just add a CDI implementation (like Weld) to your libraries, and start adding CDI Beans/Annotations to your app. You don't have to change your existing codebase. I would suggest reading the Weld reference.

Answer 3

If you plan to use JBoss CDI Implementation (Weld) you might be interested in this CDI with JBoss Weld article.

Answer 4

see openwebbeans.apache.org

Answer 5

Following the line suggested I recommend reading :

The Java EE 6 Tutorial - Contexts and Dependency Injection

Answer 6

In the same spirit, I like the following article:

Spring to Java EE – A Migration Experience

It's not about "Old-skool Java EE"-to-"CDI-based Java EE", but more about Spring-to-Java EE 6.

Off-topic, but an interesting read anyway.