org.hibernate.transform.BasicTransformerAdapter Java Examples

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Example #1
Source File: HibernateSearchWithElasticsearchIT.java    From hibernate-demos with Apache License 2.0 5 votes vote down vote up 
@Test
public void projectionWithTransformer() {
	EntityManager em = emf.createEntityManager();

	inTransaction( em, tx -> {
		FullTextEntityManager ftem = Search.getFullTextEntityManager( em );
		QueryBuilder qb = ftem.getSearchFactory()
				.buildQueryBuilder()
				.forEntity( VideoGame.class )
				.get();

		FullTextQuery query = ftem.createFullTextQuery(
				qb.keyword()
				.onField( "tags" )
				.matching( "round-based" )
				.createQuery(),
				VideoGame.class
		)
		.setProjection( "title", "publisher.name", "release" )
		.setResultTransformer( new BasicTransformerAdapter() {
			@Override
			public VideoGameDto transformTuple(Object[] tuple, String[] aliases) {
				return new VideoGameDto( (String) tuple[0], (String) tuple[1], (Date) tuple[2] );
			}
		} );

		VideoGameDto projection = (VideoGameDto) query.getSingleResult();
		assertThat( projection.getTitle() ).isEqualTo( "Tanaka's return" );
		assertThat( projection.getPublisherName() ).isEqualTo( "Samurai Games, Inc." );
		assertThat( projection.getRelease() ).isEqualTo( new GregorianCalendar( 2011, 2, 13 ).getTime() );
	} );

	em.close();
}