JBoss Weld CDI for Java Platform

Summary

We discussed some of the advantages of decoupling our application beans by using event producers and consumers. We then looked at what constitutes an event payload and how to define an event qualifier. Using event qualifiers and @Observes, we created observer methods to consume events that were produced with a call to Event.fire().

We expanded on event qualifiers to cover how to use qualifier members with events and the different approaches for combining multiple event qualifiers when firing and observing events. We also saw how events can be observed based on different phases of the transaction lifecycle, and whether a transaction was successfully completed or not.

Lastly, we looked at how a bean with an observer method is automatically ...