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EJB 3 in Action by Derek Lane, Reza Rahman, Debu Panda

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Part 5. Migration and interoperability issues

In the final part of this book, we explore some of the issues you are bound to come across while using EJB 3 in the real world. These advanced topics are primarily geared toward migration, system integration, and interoperability.

If you are already using EJB 2 and are looking at EJB 3, chapter 14 is critically important to you. The chapter discusses migrating from EJB 2 to EJB 3 in great detail. We first see how EJB 2 and EJB 3 can coexist in the short run if necessary. We then look at migrating EJB 2 session beans and MDBs to EJB 3, followed by migrating applications using EJB 2 CMP entity beans, JDBC DAOs, and proprietary O/R frameworks such as Hibernate/TopLink to JPA.

In chapter 15, we move ...

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