So, you should bootstrap via JPA, use the EntityManagerFactory and EntityManager, and only unwrap those to their associated Hibernate interfaces when you want to get access to some Hibernate-specific methods that are not available in JPA, like fetching the entity via its natural identifier. You can easily get access to the underlying Session using the unwrap method: Session session = entityManager.unwrap(Session.class) If you inject the EntityManager via the annotation: EntityManager entityManager ![]() This is essential knowledge when working with databases in Java. Ranking, 110 in MvnRepository (See Top Artifacts) 1 in Object/Relational Mapping. Hibernate is Java-based ORM tool that provides the framework for mapping application domain objects to the relational database tables and vice versa. Learn how to use Object Relational mapping framework Hibernate as well as the standard JPA. The same can be done with the JPA EntityManager. Tags, hibernatepersistencerelationalmapping. You can easily get access to the underlying Sessionfactory using the unwrap method: SessionFactory sessionFactory = entityManagerFactory.unwrap(SessionFactory.class) Unwrapping JPA to HibernateĪlso, if you bootstrap via JPA, and you have injected the EntityManagerFactory via the annotation: EntityManagerFactory entityManagerFactory That's because the JPA FlushModeType.AUTO is a much better choice than the legacy FlushMode.AUTO, which breaks read-your-writes consistency for native SQL queries. If you're using Spring, the JPA bootstrap is done via the LocalContainerEntityManagerFactoryBean, as illustrated by this GitHub example.īootstrapping via JPA is to be preferred.
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