thjanssen

Object r = em.createQuery("SELECT function('calculate', a.id, 1) FROM Author a WHERE a.id = 1").getSingleResult();

thjanssen

EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
	
List<Object[]> results = em.createQuery("SELECT p.firstName, p.lastName, n.phoneNumber FROM Person p JOIN PhoneBookEntry n ON p.firstName = n.firstName AND p.lastName = n.lastName").getResultList();

for (Object[] result : results) {
	log.info(result[0] + " " + result[1] + " - " + result[2]);
}

em.getTransaction().commit();

thjanssen

@Entity
public class Book {

	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "id", updatable = false, nullable = false)
	private Long id;
	@Version
	@Column(name = "version")
	private int version;

thjanssen

17:34:50,353 DEBUG [org.hibernate.SQL] - select author0_.id as id1_0_, author0_.firstName as firstNam2_0_, author0_.lastName as lastName3_0_, author0_.version as version4_0_ from Author author0_ where author0_.id=1
17:34:50,362 TRACE [org.hibernate.type.descriptor.sql.BasicExtractor] - extracted value ([id1_0_] : [BIGINT]) - [1]
17:34:50,373 TRACE [org.hibernate.type.descriptor.sql.BasicExtractor] - extracted value ([firstNam2_0_] : [VARCHAR]) - [Joshua]
17:34:50,373 TRACE [org.hibernate.type.descriptor.sql.BasicExtractor] - extracted value ([lastName3_0_] : [VARCHAR]) - [Bloch]
17:34:50,374 TRACE [org.hibernate.type.descriptor.sql.BasicExtractor] - extracted value ([version4_0_] : [INTEGER]) - [0]

thjanssen

@Entity
public class MyEntity {

	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "id", updatable = false, nullable = false)
	private Long id;

	@Column
	private MyJson jsonProperty;

thjanssen

em.createNamedQuery(“selectAuthors”).getResultList();

thjanssen

Session s = (Session) em.getDelegate();
		Query q = s.createQuery("SELECT a FROM Author a WHERE id = :id");
		q.setParameter("id", 1L);
		q.setCacheable(true);
log.info(q.uniqueResult());

thjanssen

@Entity
@Immutable
public class BookView {
	
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "id", updatable = false, nullable = false)
	private Long id;
	@Version
	@Column(name = "version")

thjanssen

@Id
@GeneratedValue
@Column(name = "id", updatable = false, nullable = false)
private Long id;

thjanssen

EntityManager em = emf.createEntityManager();
em.getTransaction().begin();

Author a = em.createQuery("SELECT a FROM Author a JOIN FETCH a.books WHERE a.id = 1", Author.class).getSingleResult();

em.getTransaction().commit();
em.close();
	
log.info(a.getFirstName()+" "+a.getLastName()+" wrote "+a.getBooks().size()+" books.");