How to use org.hibernate.jpa

protected EntityManagerFactoryBuilder getEntityManagerFactoryBuilderOrNull(String persistenceUnitName, Map properties,
    ClassLoaderService providedClassLoaderService) {
  return getEntityManagerFactoryBuilderOrNull( persistenceUnitName, properties, null, providedClassLoaderService );
}

@SuppressWarnings( {"UnusedDeclaration"})
public Set<String> getSupportedHints() {
  return QueryHints.getDefinedHints();
}

@Override
public boolean generateSchema(String persistenceUnitName, Map map) {
  log.tracef( "Starting generateSchema for persistenceUnitName %s", persistenceUnitName );
  final EntityManagerFactoryBuilder builder = getEntityManagerFactoryBuilderOrNull( persistenceUnitName, map );
  if ( builder == null ) {
    log.trace( "Could not obtain matching EntityManagerFactoryBuilder, returning false" );
    return false;
  }
  builder.generateSchema();
  return true;
}

private org.hibernate.stat.Statistics getBaseStatistics(EntityManagerFactory entityManagerFactory) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics();
  }
  return null;
}

@Test
public void testOrm1() {
  PersistenceUnitInfoImpl pui = new PersistenceUnitInfoImpl( "orm1-test", "1.0" )
      .addMappingFileName( "org/hibernate/test/jpa/xml/versions/valid-orm-1_0.xml" );
  HibernatePersistenceProvider hp = new HibernatePersistenceProvider();
  EntityManagerFactory emf = hp.createContainerEntityManagerFactory( pui, Collections.EMPTY_MAP );
  try {
    emf.getMetamodel().entity( Lighter1.class ); // exception if not entity
  }
  finally {
    emf.close();
  }
}

/**
 * {@inheritDoc}
 * <p/>
 * Note: per-spec, the values passed as {@code properties} override values found in {@code persistence.xml}
 */
@Override
public EntityManagerFactory createEntityManagerFactory(String persistenceUnitName, Map properties) {
  log.tracef( "Starting createEntityManagerFactory for persistenceUnitName %s", persistenceUnitName );
  final EntityManagerFactoryBuilder builder = getEntityManagerFactoryBuilderOrNull( persistenceUnitName, properties );
  if ( builder == null ) {
    log.trace( "Could not obtain matching EntityManagerFactoryBuilder, returning null" );
    return null;
  }
  else {
    return builder.build();
  }
}

/**
 * {@inheritDoc}
 * <p/>
 * Note: per-spec, the values passed as {@code properties} override values found in {@link PersistenceUnitInfo}
 */
@Override
public EntityManagerFactory createContainerEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
  log.tracef( "Starting createContainerEntityManagerFactory : %s", info.getPersistenceUnitName() );
  return getEntityManagerFactoryBuilder( info, properties ).build();
}

@Override
public void generateSchema(PersistenceUnitInfo info, Map map) {
  log.tracef( "Starting generateSchema : PUI.name=%s", info.getPersistenceUnitName() );
  final EntityManagerFactoryBuilder builder = getEntityManagerFactoryBuilder( info, map );
  builder.generateSchema();
}

/**
 * Returns the name of the factory. The name is either can be specified via the property <i>hibernate.ejb.entitymanager_factory_name</i>.
 * If the property is not set the persistence unit name is used. If persistence unit name is not available, a unique
 * name will be generated.
 *
 * @return the name of the factory.
 *
 * @deprecated - no longer necessary.  all references can be directly replaced with
 * calls to {@link SessionFactoryOptions#getSessionFactoryName()}
 * via {@link #getSessionFactory()} -> {@link SessionFactoryImplementor#getSessionFactoryOptions()}
 */
@Deprecated
default String getEntityManagerFactoryName() {
  return (String) getProperties().get( AvailableSettings.ENTITY_MANAGER_FACTORY_NAME );
}

@AfterClassOnce
public void close() {
  closeEntityManager();
  emf.close();
  //NOTE we don't build the service registry so we don't destroy it
}

@Before
public void newEntityManager() {
  closeEntityManager();
  entityManager = emf.createEntityManager();
  if ( audited ) {
    auditReader = AuditReaderFactory.get( entityManager );
  }
}

static final org.hibernate.stat.Statistics getStatistics(final EntityManagerFactory entityManagerFactory) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics();
  }
  return null;
}

@Test
public void testOrm22() {
  PersistenceUnitInfoImpl pui = new PersistenceUnitInfoImpl( "orm2-test", "2.2")
      .addMappingFileName( "org/hibernate/test/jpa/xml/versions/valid-orm-2_2.xml" );
  HibernatePersistenceProvider hp = new HibernatePersistenceProvider();
  EntityManagerFactory emf = hp.createContainerEntityManagerFactory( pui, Collections.EMPTY_MAP );
  try {
    emf.getMetamodel().entity( Lighter.class ); // exception if not entity
  }
  finally {
    emf.close();
  }
}

protected EntityManagerFactoryBuilder getEntityManagerFactoryBuilderOrNull(String persistenceUnitName, Map properties,
    ClassLoader providedClassLoader) {
  return getEntityManagerFactoryBuilderOrNull( persistenceUnitName, properties, providedClassLoader, null );
}

private org.hibernate.stat.Statistics getBaseStatistics(EntityManagerFactory entityManagerFactory) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics();
  }
  return null;
}

protected EntityManagerFactoryBuilder getEntityManagerFactoryBuilderOrNull(String persistenceUnitName, Map properties) {
  return getEntityManagerFactoryBuilderOrNull( persistenceUnitName, properties, null, null );
}

private org.hibernate.stat.Statistics getBaseStatistics(EntityManagerFactory entityManagerFactory) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics();
  }
  return null;
}

private org.hibernate.stat.Statistics getBaseStatistics(EntityManagerFactory entityManagerFactory) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics();
  }
  return null;
}

private CollectionStatistics getStatistics(final EntityManagerFactory entityManagerFactory, String collectionName) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics().getCollectionStatistics(collectionName);
  }
  return null;
}

private org.hibernate.stat.EntityStatistics getStatistics(EntityManagerFactory entityManagerFactory, String entityName) {
  if (entityManagerFactory == null) {
    return null;
  }
  HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
  SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
  if (sessionFactory != null) {
    return sessionFactory.getStatistics().getEntityStatistics(entityName);
  }
  return null;
}