createEntityManagerFactory « EntityManager « JPA Q&A

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1. Persistence.createEntityManagerFactory clearing out the whole database    stackoverflow.com

I'm currently working with a project using Hibernate + JPA. I don't recall exactly what I changed in the project, but everytime I try to instantiate a new EntityManagerFactory, it clears out ...

2. JPA - createEntityManagerFactory returns Null    stackoverflow.com

Noob question here. I'm following this example/tutorial to try and isolate a problem I keep getting on my main project. Problem is, the entityManagerFactory keeps returning null (thus, I ...

3. Netbeans generated JpaControllers *all* call Persistence.createEntityManagerFactory()?    stackoverflow.com

I recently used Netbeans (v.6.9) to generate JpaController classes from my entity classes. Even though I only have one Persistence Unit the every JpaController class that Netbeans generated declares a private ...