package org.dto;

import java.util.Set;

public class UserDetails {
   private int userID;
   private String userName;

   //One User can have multiple vehicles. therefore set
   private Set<Vehicle> vehciles;
   
   //one to one mapping between UserDetails and Address
   private Address address;

   public int getUserID() {
      return userID;
   }

   public void setUserID(int userID) {
      this.userID = userID;
   }

   public String getUserName() {
      return userName;
   }

   public void setUserName(String userName) {
      this.userName = userName;
   }

   public Set<Vehicle> getVehciles() {
      return vehciles;
   }

   public void setVehciles(Set<Vehicle> vehciles) {
      this.vehciles = vehciles;
   }

   public Address getAddress() {
      return address;
   }

   public void setAddress(Address address) {
      this.address = address;
   }

}

package org.dto;

public class Vehicle {
   private int vehicleID;
   private String vehicleName;
   
   //Many vehicles can have one User
   private UserDetails user;

   public int getVehicleID() {
      return vehicleID;
   }

   public void setVehicleID(int vehicleID) {
      this.vehicleID = vehicleID;
   }

   public String getVehicleName() {
      return vehicleName;
   }

   public void setVehicleName(String vehicleName) {
      this.vehicleName = vehicleName;
   }

   public UserDetails getUser() {
      return user;
   }

   public void setUser(UserDetails user) {
      this.user = user;
   }

}

package org.dto;

public class Address {
   private int userID;
   private String street;
   private String city;
   private String state;
   private String country;
   private String pincode;

   // One to one between UserDetails and Address
   private UserDetails user;

   public String getStreet() {
      return street;
   }

   public void setStreet(String street) {
      this.street = street;
   }

   public String getCity() {
      return city;
   }

   public void setCity(String city) {
      this.city = city;
   }

   public String getState() {
      return state;
   }

   public void setState(String state) {
      this.state = state;
   }

   public String getCountry() {
      return country;
   }

   public void setCountry(String country) {
      this.country = country;
   }

   public String getPincode() {
      return pincode;
   }

   public void setPincode(String pincode) {
      this.pincode = pincode;
   }

   public UserDetails getUser() {
      return user;
   }

   public void setUser(UserDetails user) {
      this.user = user;
   }

   public int getUserID() {
      return userID;
   }

   public void setUserID(int userID) {
      this.userID = userID;
   }

}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
                                         "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
   <session-factory>
      <property name="hibernate.connection.driver_class">oracle.jdbc.OracleDriver</property>
      <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
      <property name="hibernate.connection.username">gaurav</property>
      <property name="hibernate.connection.password">tiger</property>
      <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
      <property name="hibernate.show_sql">true</property>
      <property name="hibernate.hbm2ddl.auto">vaildate</property>
      <mapping resource="org/dto/mappings.hbm.xml" />
   </session-factory>
</hibernate-configuration>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
                           "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
   <!-- UserDetails -->
   <class name="org.dto.UserDetails" table="USERDETAILS">
      <id name="userID" column="USERID">
         <generator class="sequence">
            <param name="sequence">USERDETAILS_SEQ</param>
         </generator>
      </id>
      <property name="userName" column="USERNAME" />
      <set name="vehicles" table="VEHICLE" inverse="true" lazy="true"
         fetch="select">
         <key>
            <column name="VEHICLEID" not-null="true" />
         </key>
         <one-to-many  class="
               org.dto.Vehicle " />
      </set>
      <one-to-one name="address" class="org.dto.Address" cascade="save-update" />
   </class>

   <!-- Address -->
   <class name="org.dto.Address" table="ADDRESS">
      <id name="userID" column="USERID">
         <generator class="foreign">
            <param name="property">user</param>
         </generator>
      </id>
      <property name="street" column="STREET" />
      <property name="city" column="CITY" />
      <property name="state" column="STATE" />
      <property name="country" column="COUNTRY" />
      <property name="pincode" column="PINCODE" />
      <one-to-one name="user" class="org.dto.UserDetails"
         constrained="true" />
   </class>

   <!-- Vehicle -->
   <class name="org.dto.Vehicle" table="VEHICLE">
      <id name="vehicleID" column="VEHICLEID">
         <generator class="sequence">
            <param name="sequence">VEHICLE_SEQ</param>
         </generator>
      </id>
      <property name="vehicleName" column="VEHICLENAME" />
      <many-to-one name="user" class="org.dto.UserDetails"
         fetch="select">
         <column name="VEHICLEID" not-null="true" />
      </many-to-one>
   </class>

</hibernate-mapping>

package org.dto.hibernate;

import org.dto.Address;
import org.dto.UserDetails;
import org.dto.Vehicle;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateInsert {

   public static void main(String[] args) {
      UserDetails user1 = new UserDetails();
      user1.setUserName("Gaurav");
      
      Address address1 = new Address();
      address1.setStreet("3/602, Sarvodaya Garden");
      address1.setCity("Dombivli");
      address1.setState("Maharashtra");
      address1.setCountry("India");
      address1.setPincode("421201");
      
      Vehicle vehicle1 = new Vehicle();
      vehicle1.setVehicleName("BMW");
      
      vehicle1.setUser(user1);
      user1.setAddress(address1);
      address1.setUser(user1);
      
      SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
      Session session = sessionFactory.openSession();
      session.beginTransaction();
      session.save(address1);
      session.save(vehicle1);
      session.save(user1);
      session.getTransaction().commit();
   }

}