New features of Hibernate 5 you didn’t know

Everybody know Hibernate right? Perhaps don’t. JPA is so popular these days that many people think that Hibernate is just a JPA implementation. Wrong! Hibernate is a very powerful tool and is constantly innovating. Have you checked Hibernate recently? There are a lot of new features that you probably don’t know, but you should!

Join us on this session to see which are the new features provided on Hibernate 5 that you didn’t know, including: new Bootstrap API, Java 8 support, Generics and AutoCloseable, Bytecode Enhancement for lazy fields and collections. And wouldn’t be great if we could integrate ElasticSearch with Hibernate so that all changes are in sync? And what about using your domain objects in ElasticSearch queries? We got it all covered!

Transcript

1. New Features of Hibernate 5 you didn’t know Edson Yanaga Director of Developer Experience @yanaga
2. Join developers.redhat.com 2 Java Champion Microsoft MVP @yanaga
3. http://developers.redhat.com/promotions/ migrating-to-microservice-databases
4. “Now, every company is a software company” — Forbes
5. Join developers.redhat.com 5
6. “The two most important days in your life are the day you are born and the day you find out why.” — Mark Twain
7. Hibernate ORM 5
8. Bootstrap • Modularity • Wildfly • OSGi • Why modularize? • Extensions • ORM integration
9. StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder() .configure( "org/hibernate/example/MyCfg.xml" ) .build(); Metadata metadata = new MetadataSources( standardRegistry ) .addAnnotatedClass( MyEntity.class ) .addAnnotatedClassName( "org.hibernate.example.Customer" ) .addResource( "org/hibernate/example/Order.hbm.xml" ) .addResource( "org/hibernate/example/Product.orm.xml" ) .getMetadataBuilder() .applyImplicitNamingStrategy( ImplicitNamingStrategyJpaCompliantImpl.INSTANCE ) .build(); SessionFactory sessionFactory = metadata.getSessionFactoryBuilder() .applyBeanManager( getBeanManagerFromSomewhere() ) //CDI BeanManager to the SessionFactory being built .build();
10. Java 8 • New types • Date and Time API • Java 5, 6 e 7 • Generics • AutoCloseable
11. Date and Time • DATE: java.time.LocalDate • TIME: java.time.LocalTime, java.time.OffsetTime • TIMESTAMP: java.time.Instant, java.time.LocalDateTime, java.time.OffsetDateTime and java.time.ZonedDateTime <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-java8</artifactId> <version>${hibernate.version}</version> </dependency>
12. Generics and AutoCloseable • AutoCloseable resources: • Session/StatelesSession • SessionFactory • ScrollableResults try ( Session session = sessionFactory.openSession() ) { Address address = session.get(Address.class, id); return address.getCity(); }
13. Bytecode Augmentation • Smarter change detection • Better Maven and Gradle support • Enhanced Dirty checking • Bidirectional relationship management
14. Maven <plugin> <groupId>org.hibernate.orm.tooling</groupId> <artifactId>hibernate-enhance-maven-plugin</artifactId> <version>${currentHibernateVersion}</version> <executions> <execution> <configuration> <failOnError>true</failOnError> <enableLazyInitialization>true</enableLazyInitialization> <enableDirtyTracking>true</enableDirtyTracking> <enableAssociationManagement>true</enableAssociationManagement> </configuration> <goals> <goal>enhance</goal> </goals> </execution> </executions> </plugin>
15. Lazy properties
16. Relationship Management: Before
17. Relationship Management: After
18. AttributeConverter • Enums without @Enumerated • Invoked on null values • Hibernate Envers integration • @ElementCollection • @MapKey
19. Other • @GeneratedValue(strategy=AUTO) • UUID, custom strategy • Naming strategy • physical and implicit • Documentation • Blog
20. Hibernate Search
21. Full-text Search • Lucene 5 • Item level queries • Cluster • Master/Slave
22. New features • Lucene 5 • Significant performance improvements • ElasticSearch backend
23. Example
26. Hibernate OGM (Object/Grid Mapper)
27. JPA with NoSQL • MongoDB (Fongo) • Infinispan • Neo4j (remote and embedded) • Redis • EhCache • Cassandra • CouchDB
28. Starting with OGM
29. Hibernate Envers
30. Join developers.redhat.com Feedback welcome! @yanaga
31. plus.google.com/+RedHat linkedin.com/company/red-hat youtube.com/user/RedHatVideos facebook.com/redhatinc twitter.com/RedHatNews Thank you!