1.5. Searching

Now it is time to execute a first search. The general approach is to create a native Lucene query and then wrap this query into a org.hibernate.Query in order to get all the functionality one is used to from the Hibernate API. The following code will prepare a query against the indexed fields, execute it and return a list of Books.

Example 1.8. Using Hibernate Session to create and execute a search

FullTextSession fullTextSession = Search.getFullTextSession(session);
Transaction tx = fullTextSession.beginTransaction();

// create native Lucene query
String[] fields = new String[]{"title", "subtitle", "authors.name", "publicationDate"};
MultiFieldQueryParser parser = new MultiFieldQueryParser(fields, new StandardAnalyzer());
org.apache.lucene.search.Query query = parser.parse( "Java rocks!" );

// wrap Lucene query in a org.hibernate.Query
org.hibernate.Query hibQuery = fullTextSession.createFullTextQuery(query, Book.class);

// execute search
List result = hibQuery.list();
  
tx.commit();
session.close();

Example 1.9. Using JPA to create and execute a search

EntityManager em = entityManagerFactory.createEntityManager();
FullTextEntityManager fullTextEntityManager = 
    org.hibernate.search.jpa.Search.getFullTextEntityManager(em);
em.getTransaction().begin();

// create native Lucene query
String[] fields = new String[]{"title", "subtitle", "authors.name", "publicationDate"};
MultiFieldQueryParser parser = new MultiFieldQueryParser(fields, new StandardAnalyzer());
org.apache.lucene.search.Query query = parser.parse( "Java rocks!" );

// wrap Lucene query in a javax.persistence.Query
javax.persistence.Query persistenceQuery = fullTextEntityManager.createFullTextQuery(query, Book.class);

// execute search
List result = persistenceQuery.getResultList();

em.getTransaction().commit();
em.close();