Hibernate event listeners for JPA callbacks

Question

How can I enable the Hibernate event listeners, that handle JPA callbacks?

Currently I am using using Hibernate 4 with SessionFactory configuration, but JPA callback

Answer 1

Add a file named org.hibernate.integrator.spi.Integrator containing a single line

org.hibernate.jpa.event.spi.JpaIntegrator

in your META-INF/services folder. This will enable JPA lifecycle annotations including @EntityListeners for sessionFactory based configurations.