CreateFullTextQuery.java

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

FullTextEntityManager fullTextEm = Search.getFullTextEntityManager(em);
QueryBuilder tweetQb = fullTextEm.getSearchFactory().buildQueryBuilder().forEntity(Tweet.class).get();
Query tweetQuery = tweetQb.all().createQuery();
FullTextQuery fullTextQuery = fullTextEm.createFullTextQuery(tweetQuery, Tweet.class);

FacetedQuery.java

FacetingRequest postedAtFR = tweetQb.facet()
      .name("userNameFR")
      .onField(Tweet_.userName.getName())
      .discrete()
      .orderedBy(FacetSortOrder.COUNT_DESC)
      .includeZeroCounts(false)
      .maxFacetCount(3)
      .createFacetingRequest();	

FacetManager facetMgr = fullTextQuery.getFacetManager();
facetMgr.enableFaceting(postedAtFR);
List<Facet> facets = facetMgr.getFacets("userNameFR");

FacetedResults.log

06:44:05,467  INFO TestSearchTweets:179 - thjanssen123 3
06:44:05,467  INFO TestSearchTweets:179 - baeldung 1
06:44:05,467  INFO TestSearchTweets:179 - nipafx 1

Tweet.java

@Indexed
@Entity
public class Tweet {

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

	@Column
	@Field(name = "postedAt", analyze = Analyze.NO)
	@DateBridge(resolution = Resolution.MONTH)
	private Date postedAt;

	@Column
	@Field(analyze = Analyze.NO)
	@Facet
	private String userName;

	@Column
	private String message;

	@Column
	private String url;

	@Version
	private Long version;
  
	...
}

UseFacetInQuery.java

// create a FullTextQuery and select Facets as shown in previous code snippets

FacetSelection facetSelection = facetMgr.getFacetGroup( "userNameFR" );
facetSelection.selectFacets( facets.get( 0 ) );

List<Tweet> tweets = fullTextQuery.getResultList();
for (Tweet t : tweets) {
  log.info(t);
}

UseFacetInQuery.log

08:10:47,793  INFO TestSearchTweets:213 - Selected Facets
08:10:47,795  INFO TestSearchTweets:215 - thjanssen123 3
08:10:47,795  INFO TestSearchTweets:215 - baeldung 1
08:10:47,795  INFO TestSearchTweets:215 - nipafx 1
08:10:47,832 DEBUG SQL:92 - select this_.id as id1_0_0_, this_.message as message2_0_0_, this_.postedAt as postedAt3_0_0_, this_.url as url4_0_0_, this_.userName as userName5_0_0_, this_.version as version6_0_0_ from Tweet this_ where (this_.id in (?, ?, ?))
08:10:47,836  INFO TestSearchTweets:224 - Tweets of Facet [thjanssen123]
08:10:47,836  INFO TestSearchTweets:226 - Tweet [id=1, postedAt=2017-01-31 00:00:00.0, userName=thjanssen123, message=The Ultimate Guide to JPQL Queries with JPA, url=http://www.thoughts-on-java.org/jpql/, version=0]
08:10:47,837  INFO TestSearchTweets:226 - Tweet [id=2, postedAt=2017-01-24 00:00:00.0, userName=thjanssen123, message=5 tips to write efficient queries with JPA and Hibernate, url=www.thoughts-on-java.org/5-tips-write-efficient-queries-jpa-hibernate/, version=0]
08:10:47,837  INFO TestSearchTweets:226 - Tweet [id=3, postedAt=2017-02-02 00:00:00.0, userName=thjanssen123, message=How to automatically validate entities with Hibernate Validator BeanValidation, url=http://www.thoughts-on-java.org/automatically-validate-entities-with-hibernate-validator/, version=0]