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Java EE 8 Development with Eclipse
book

Java EE 8 Development with Eclipse

by Ram Kulkarni
June 2018
Intermediate to advanced content levelIntermediate to advanced
596 pages
12h 39m
English
Packt Publishing
Content preview from Java EE 8 Development with Eclipse

Using JPA APIs to manage data

We will now create classes that use JPA APIs to manage data for our course management application. We will create service classes for Course, Teacher, and Student entities and add methods that directly access the database through JPA APIs.

As mentioned in the JPA concepts section, it is a good practice to cache an instance of EntityManagerFactory in our application. Furthermore, managed beans of JSF act as a link between the UI and the backend code, and as a conduit to transfer data between the UI and the data access objects. Therefore, they must have an instance of the data access objects (which use JPA to access data from the database). To cache an instance of EntityManagerFactory, we will create another managed ...

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Publisher Resources

ISBN: 9781788833776Supplemental Content