Spring to Java EE Migration, Part 2 (technical article)

In part two of a four-part article series on otn/java, “Spring to Java EE Migration, Part 2,” CTO and Java EE expert David Heffelfinger elaborates further on how easy it is to develop the data layer of an application using Java EE, JPA, and the NetBeans IDE instead of the Spring Framework.

Part 1 began with a Java EE rewrite of Spring's Pet Clinic sample application and developed the persistence layer of the application using Java Persistence API (JPA) 2.0, using NetBeans to generate most of the persistence layer from an existing database schema. Heffelfinger analyzed the generated code, which employed advanced JPA features.

In part 2, he continues this process by developing Enterprise JavaBeans (EJB) 3.1 session beans that act as Data Access Objects (DAOs), as well as JavaServer Faces (JSF) 2.0 managed beans and pages. Readers get to see the generated code in action and are given a look under the hood to see what’s going on.

Heffelfinger concludes Part 2 with a look ahead to Part 3:

“In the next installment of this series, we will modify the generated code to make it a bit more user friendly and we will compare the Java EE and Spring versions of the Pet Clinic application.”

Read the complete article here.

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