<?xml version="1.0"?>

 <!DOCTYPE hibernate-mapping

 PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

 <hibernate-mapping >

   <class name="mypack.Monkey" table="MONKEYS" >

     <id name="id" type="long" column="ID">

       <generator class="increment"/>

     </id>

     <property name="name" type="string" >

         <column name="NAME" length="15" />

     </property>

    <property name="age" type="int" >

         <column name="AGE" />

    </property>

    <list   name="images"   table="IMAGES"    lazy="true">

         <key column="MONKEY_ID" />

         <list-index column="POSITION" />

         <element column="FILENAME" type="string"  not-null="true"/>

    </list>   

   </class>

 </hibernate-mapping>

 package mypack;

 import java.io.Serializable;

 import java.util.List;

 import java.util.ArrayList;

 public class Monkey implements Serializable {

     private Long id;

     private String name;

     private int age;

     private List images=new ArrayList();

     /** full constructor */

     public Monkey(String name, int age,List images) {

         this.name = name;

         this.age=age;

         this.images = images;

     }

     /** default constructor */

     public Monkey() {

     }

     /** minimal constructor */

     public Monkey(List images) {

         this.images = images;

     }

     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 int getAge() {

         return this.age;

     }

     public void setAge(int age) {

         this.age = age;

     }

     public List getImages() {

         return this.images;

     }

     public void setImages(List images) {

         this.images = images;

     }

 }

 package mypack;

 import org.hibernate.*;

 import org.hibernate.cfg.Configuration;

 import java.util.*;

 import java.sql.*;

 public class BusinessService{

   public static SessionFactory sessionFactory;

   static{

      try{

        Configuration config = new Configuration().configure();

        sessionFactory = config.buildSessionFactory();

     }catch(RuntimeException e){e.printStackTrace();throw e;}

   }

   public void saveMonkey(Monkey monkey){

       Session session = sessionFactory.openSession();

       Transaction tx = null;

       List results=new ArrayList();

       try {

        tx = session.beginTransaction();

        session.save(monkey);

        tx.commit();

     }catch (RuntimeException e) {

       if (tx != null) {

         tx.rollback();

       }

       throw e;

     } finally {

       session.close();

     }

   }

   public Monkey loadMonkey(long id){

       Session session = sessionFactory.openSession();

       Transaction tx = null;

       try {

        tx = session.beginTransaction();

        Monkey monkey=(Monkey)session.get(Monkey.class,new Long(id));

        Hibernate.initialize(monkey.getImages());

        tx.commit();

       return monkey;

     }catch (RuntimeException e) {

       if (tx != null) {

         tx.rollback();

       }

       throw e;

     } finally {

       session.close();

     }

   }

    public void test(){

       List images=new ArrayList();

       images.add("image1.jpg");

       images.add("image4.jpg");

       images.add("image2.jpg");

       images.add("image2.jpg");

       images.add("image5.jpg");

       Monkey monkey=new Monkey("Tom",21,images);

       saveMonkey(monkey);

       monkey=loadMonkey(1);

       printMonkey(monkey);  

   }

   private void printMonkey(Monkey monkey){

      System.out.println(monkey.getImages().getClass().getName());

      List images=monkey.getImages();

      for(int i=images.size()-1;i>=0;i--){

         String fileName=(String)images.get(i);

         System.out.println(monkey.getName()+" "+fileName);

      }

   }

   public static void main(String args[]){

     new BusinessService().test();

     sessionFactory.close();

   }

 }

 drop database if exists SAMPLEDB;

 create database SAMPLEDB;

 use SAMPLEDB;

 create table MONKEYS (

    ID bigint not null,

    NAME varchar(15),

    AGE int,

    primary key (ID)

 );

 create table IMAGES(

    MONKEY_ID bigint not null,

    POSITION int not null,

    FILENAME varchar(15) not null,

    primary key (MONKEY_ID,POSITION)

 );

 alter table IMAGES add index IDX_MONKEY(MONKEY_ID), add constraint FK_MONKEY foreign key (MONKEY_ID) references MONKEYS(ID);