1)  Follow the steps mentioned to get an EntityManager instance fro m JBoss Seam’s component xml and register in the Google Guice injector using a Provider  implementation. Make a little change where the Provider’s getter method is made static.  Following is the EntityManagerProvider code snippet to do that:

class EntityManagerProvider implements Provider
{       static EntityManagerFactory entityManagerFactory = null;
        public static EntityManager get()
        {   return entityManagerFactory.createEntityManager();
        }
}

2) Implement Guice injection Provider for constructing a FullTextEntityManager from EntityManager

public class FullTextEntityManagerProvider implements Provider
{    static FullTextEntityManager fullTextManager = null;
     private static EntityManager entityManager;

     public static void setEntityManager(EntityManager em)
     {   entityManager = em;
     }

      public FullTextEntityManager get()
      {   if(fullTextManager==null)
             fullTextManager = Search.getFullTextEntityManager(entityManager);
           return fullTextManager;
      }
}

3) Modify the custom module (now refactored as MySearchEntityManagerModule) to construct the FullTextEntityManager using EntityManager instance as shown below.

public class MySearchEntityManagerModule extends AbstractModule
{      public void configure()
       {   Expressions expressions = Expressions.instance();
           ValueExpression emfVE = expressions.createValueExpression("#{my_persistence_unit}");
           EntityManagerFactory emf = (EntityManagerFactory)emfVE.getValue();
           EntityManagerProvider.setEntityManagerFactory(emf);
           FullTextEntityManagerProvider.setEntityManager(provider.get());

            //bind EntityManager and FullTextEntityManager for both pure database and search specific integration
            bind(EntityManager.class).toProvider(EntityManagerProvider.class).in(Scopes.SINGLETON);
            bind(FullTextEntityManager.class).toProvider(FullTextEntityManagerProvider.class).in(Scopes.SINGLETON);
     }
}

3) Inject the FullTextEntityManager in the dataservice (DAO) for searching for text tokens using Hibernate Search.

@Name("hybrid")
@Guice
public class HybridDAO
{  @Inject FullTextEntityManager searchManager;
    //other DAO methods to perform search using Hibernate Search and Lucene
}

This quick tip provides us a capability of enhancing Primefaces widgets to use the power of Hibernate Search for search and much more extensible features.