Wsrtjtyk

I would like to decorate the entity manager so that I can do things before/after delegating the call to the persist method of the original one. Besides that, it is mandatory that the JPA repositories (interfaces inheriting JpaRepository use this decorated EntityManager). Solutions using aop/interception would be welcome as well as long as JPA repositories use the intercepted EntityManager.

For the sake of simplicity bellow is an example of the EntityManager decorator, bear in mind that even though I use this decorator to log something before/after delegating the call in the real scenario, I will not be using the decorator for logging.

public class CustomEntityManager implements EntityManager {



    private EntityManager entityManager;



    public CustomEntityManager(EntityManager entityManager) {

        this.entityManager = entityManager;

    }



    ...



    public void persist(Object entity) {

        System.out.println("Before persisting...");

        entityManager.persist(entity);

        System.out.println("After persisting...");

    }



    ...

}