How to use OpenJpa using persistence.xml without using Enhance.xml ..?

Question

How can I use OpenJpa ,with using Persistence.xml configuration same we use in jpa, I dont want to use Enhance.xml.

Answer 1

If you rely on some non-IDE tool to build your app, you can enhance automatically during buildtime. For Maven, for example, see this

Answer 2

If you are running in a JavaEE container you will get enhancement for free. The other option when running in a JSE environment is to configure the -javaagent.

Take a look at the section titled 'Explicit javaagent support'. As for JavaEE stuff, I'd suggest getting ahold of the Pro JPA 2 book. It is very good at describing usage of JPA in an EE environment.