BuildSearchIndex.java

package com.exadel.search;

import org.hibernate.search.jpa.FullTextEntityManager;
import org.hibernate.search.jpa.Search;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

/**
 * The only meaning for this class is to build the Lucene index at application
 * startup. This is needed in this example because the database is filled 
 * before and each time the web application is started. In a normal web 
 * application probably you don't need to do this.
 * 
 * @author netgloo
 */
@Component
public class BuildSearchIndex
implements ApplicationListener<ContextRefreshedEvent> {

  
  @PersistenceContext
  private EntityManager entityManager;

  @Override
  public void onApplicationEvent(final ContextRefreshedEvent event) {
    try {
      FullTextEntityManager fullTextEntityManager =
          Search.getFullTextEntityManager(entityManager);
      fullTextEntityManager.createIndexer().startAndWait();
    }
    catch (InterruptedException e) {
      System.out.println(
          "An error occurred trying to build the serach index: " +
          e.toString());
    }
    return;
  }


}