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DataNucleus libraries for JPA and JDO

App Engine supports the JDO and JPA standards for storing objects into a database. The App Engine SDK carries the DataNucleus libraries that implement these standards.

Version 1 of the DataNucleus library supports JDO 2.3 and JPA 1.0 .

Version 2 of the DataNucleus library is an experimental, innovative, and rapidly changing new feature for Google App Engine. It supports JDO 3.0 and JPA 2.0 .

From Google Plugin for Eclipse 3.1.0 onwards, you can select the DataNucleus library version that want to use in your App Engine project under Properties > Google > App Engine > Datastore

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License , and code samples are licensed under the Apache 2.0 License . For details, see our Site Policies .

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