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

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Chapter 14. Migrating to EJB 3

This chapter covers

  • Migrating session beans and MDBs
  • Migrating CMP entity beans
  • Migrating JDBC DAO and O/R frameworks

In today’s IT world, migration has become an integral part of the application development lifecycle. Software products and technology change every few years, requiring the migration of applications from one platform (or one version) to another. From a budget standpoint, migration is certainly less expensive than rebuilding applications, and thus easier to justify to management. IT shops normally migrate their applications to increase their longevity and improve maintainability. Countless applications have been written using EJB 2 and many of these applications will be migrated to use EJB 3. ...

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