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It is currently not straightforward to use other persistence providers than those bundled in the IDE or those that come with the server, e.g. Hibernate 4.3 as a JPA 2.1 implementation. While after fixing bug 231192 it is possible to use Hibernate 4.3 as a JPA 2.1 implementation, the workflow is really suboptimal for Maven users: 1. Download and unzip Hibernate 4.3 (latest beta) 2. In the New Persistence Unit wizard, create a New Persistence Library for this Hibernate 4.3 installation (lib/required/*.jar, lib/jpa/*.jar) 3. After finishing the wizard, pom.xml will be modified - many "unknown.library" dependencies will be added - user needs to replace these with proper Maven coordinates. It would be better if the IDE had the knowledge of Hibernate 4.3 out of the box, and used a proper Maven reference to it without the unnatural workflow above.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss