The EJB 3 framework was a major advancement for Java EE developers, providing a consistent, easy to use model to create and extend applications. EJB 3 incorporates a POJO programming model and Java 5 annotations, along with the Java Persistence API (JPA), a standard for object-relational mapping. EJB 3.1, the latest version, adds full support for Context and Dependency Injection (CDI), the new standard for type-safe dependency injection for Java EE. With EJB 3.1 you create true object-oriented applications that are easy to write, maintain, and extend. Building on the bestselling first edition, EJB 3 in Action, Second Edition tackles EJB 3.1 head-on, through numerous code samples, real-life scenarios, and illustrations. This book is a fast-paced tutorial for Java EE 6 business component development using EJB 3.1, JPA 2 and CDI. Besides covering the basics of EJB 3.1, this book includes in-depth EJB 3.1 internal implementation details, best practices, design patterns, and performance tuning tips. The book also discusses using open source frameworks like Seam and Spring with EJB 3.1.