A VRaptor JPA plugin.
Copy the jar file to your app or use:
<dependency>
<groupId>br.com.caelum.vraptor</groupId>
<artifactId>vraptor-jpa</artifactId>
<version>1.0.0</version>
</dependency>
This plugin doesn't include any JPA Provider. You need to add your prefered provider.
Get help from vraptor developers and the community at VRaptor's mailing list.