Can I use JPA 2.0 with the Google App Engine?

Question

Can I use JPA 2.0 (e.g. EclipseLink) with the Google App Engine?

Answer 1

The DataNucleus plugin for Google AppEngine supports the JDO and JPA APIs to access the Google AppEngine data warehouse infrastructure. Currently, this implementation seems to support only JPA1.

Answer 2

No, you cannot use any implementation in GAE, and they only support JPA 1.0. Quoting Using JPA with App Engine :

The App Engine Java SDK SDK implements JPA 1.0 for the App Engine datastore. The implementation is based on the DataNucleus access platform.

Answer 3

Experimental support for JPA 2.0 is now available in GAE.

You can find out how to configure it here.

Answer 4

Now in version 1.7.1 of the GAE SDK, you can fully use JPA 2 or JDO 3. See release notes . Or configure using this information .