public class ArtistDAOBase implements DaoElement
{
   
   private Transaction tx;
   
   private final SessionFactory sessionFactory = getSessionFactory();
       
        public SessionFactory getSessionFactory()
   {
      logInfo.info("[Class Artist] | getSessionFactory() : Getting new session factory");
      try
      {
        Configuration configuration = new Configuration();
        configuration.configure().setProperty("hibernate.show_sql", "false");
        ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
        logDebug.debug("[Class Artist] | getSessionFactory() : New session factory created successfully");
        return (configuration.buildSessionFactory(serviceRegistry));
      }
      catch (Exception e)
      {
         logError.error("[Class Artist] | getSessionFactory() : Could not locate SessionFactory in JNDI", e);
         throw new IllegalStateException("Could not locate SessionFactory in JNDI");
      }
   }

        protected void startOperation()
   {
      tx = sessionFactory.getCurrentSession().beginTransaction();
      logDebug.debug("[Class Artist] | startOperation() : New transaction started from current session.");
   }
   
   /**
       * Ends a transaction
       */
   public void endOperation()
   {
       tx.commit();
       logDebug.debug("[Class Artist] | endOperation() : Transaction commited, session ended.");
   }
       
         public List<Artist> findAll(int maxResults, int firstRow)
   {
      logInfo.info("[Class Artist] | findAll(int maxResults, int firstRow) : Getting all Artist instances");
      try
      {
         startOperation();
         Query query = sessionFactory.getCurrentSession().createQuery("from " + "Artist");
         query.setMaxResults(maxResults);
                        query.setFirstResult(firstRow);
         List<Artist> ret = (List<Artist>)query.list();
             endOperation();
         logDebug.debug("[Class Artist] | findAll(int maxResults, int firstRow) :  Get all Artist instances success");
         return ret;
      }   
      catch (RuntimeException re)
      {
         logError.error("[Class Artist] | findAll(int maxResults, int firstRow) : Get all Artist instances exception failure", re);
         throw re;
      }
   }
}

import java.util.HashSet;
import java.util.Set;


import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonElement;

public class Artist  implements java.io.Serializable, DboBean
{


  private Long id;
  private String name;
  private Set<Item> items = new HashSet<Item>(0);

   public Artist() {
   }
   
    public Long getId() {
        return this.id;
    }
   
    public void setId(Long id) {
        this.id = id;
    }
    public String getName() {
        return this.name;
    }
   
    public void setName(String name) {
        this.name = name;
    }
    public Set<Item> getItems() {
        return this.items;
    }
   
    public void setItems(Set<Item> items) {
        this.items = items;
    }
}

public class Item  implements java.io.Serializable, DboBean
{

  private Long id;
  private Artist artist;
  private int kind;
  private String name;
 
    public Item() {
    }
 
     public Long getId() {
        return this.id;
    }
   
    public void setId(Long id) {
        this.id = id;
    }

    public Artist getArtist() {
        return this.artist;
    }
   
    public void setArtist(Artist artist) {
        this.artist = artist;
    }
   
     public int getKind() {
        return this.kind;
    }
   
    public void setKind(int kind) {
        this.kind = kind;
    }
   
    public String getName() {
        return this.name;
    }
   
    public void setName(String name) {
        this.name = name;
    }
}