Delete Not Working with JpaRepository

Question

I have a spring 4 app where I\'m trying to delete an instance of an entity from my database. I have the following entity:

@Entity
public class Token impleme         


        

Answer 1

This is for anyone coming from Google on why their delete method is not working in Spring Boot/Hibernate, whether it's used from the JpaRepository/CrudRepository's delete or from a custom repository calling session.delete(entity) or entityManager.remove(entity).

I was upgrading from Spring Boot 1.5 to version 2.2.6 (and Hibernate 5.4.13) and had been using a custom configuration for transactionManager, something like this:

@Bean
public HibernateTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
    return new HibernateTransactionManager(entityManagerFactory.unwrap(SessionFactory.class));
}

And I managed to solve it by using @EnableTransactionManagement and deleting the custom transactionManager bean definition above.

If you still have to use a custom transaction manager of sorts, changing the bean definition to the code below may also work:

@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
    return new JpaTransactionManager(entityManagerFactory);
}

As a final note, remember to enable Spring Boot's auto-configuration so the entityManagerFactory bean can be created automatically, and also remove any sessionFactory bean if you're upgrading to entityManager (otherwise Spring Boot won't do the auto-configuration properly). And lastly, ensure that your methods are @Transactional if you're not dealing with transactions manually.