Deploying a JPA application to Liberty

[17.0.0.1 and later]To enable Liberty to support an application that uses the Java™ Persistence API (JPA), you add the jpa-2.0 or jpa-2.1 feature to the server.xml file, depending on which specification level you need. You also need to define persistence contexts and persistence units, and configure access to the entity manager and entity manager factory.

Before you begin

This task assumes that you created a Liberty server, on which you want to deploy an application that uses JPA. See Creating a Liberty server manually.

About this task

The following JPA features are available in Liberty:
  • The jpa-2.0 feature supports applications that use application-managed and container-managed JPA written to the JPA 2.0 specification. The support is built on Apache OpenJPA with extensions to support the container-managed programming model.
  • The jpa-2.1 feature supports applications that use application-managed and container-managed JPA written to the JPA 2.1 specification. The support is built on EclipseLink.

For information about developing JPA applications by using WebSphere® Developer Tools, see Developing JPA applications.

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