@Entity
@Table(name = "user")
public final class User implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id", nullable = false, length = 11)
    private int id;

    @Column(name = "username", nullable = false, length = 21)
    private String username;

    @Column(name = "password", nullable = false, length = 32)
    private String password;

    @Column(name = "token", nullable = false, length = 32)
    private String token;

    @Column(name = "enabled", nullable = false, length = 1)
    private boolean enabled;

    @ManyToMany(cascade = CascadeType.ALL)
    @JoinTable(name = "user_role", joinColumns = { @JoinColumn(name = "user_id") }, inverseJoinColumns = { @JoinColumn(name = "role_id") })
    private Set<UserRole> userRoles;

    @OneToOne(cascade = CascadeType.ALL)
    @JoinTable(name = "profile", joinColumns = { @JoinColumn(name = "user_id") }, inverseJoinColumns = { @JoinColumn(name = "id") })
    private Profile profile;

  ...get ... set for all properties

@Entity
@Table(name = "profile")
public final class Profile implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @OneToOne
    @JoinColumn(name = "user_id")
    private User user;

    @Column(name = "email", nullable = false, length = 64)
    private String email;

    @Column(name = "first_name", nullable = false, length = 30)
    private String firstName;

    @Column(name = "last_name", nullable = false, length = 30)
    private String lastName;

    @Column(name = "gender", nullable = false, length = 1)
    private boolean gender;

    @Column(name = "reg_ip", nullable = true, length = 254)
    private String regIp;

    ... get ... set

public User getUser(final String username, final String securityToken)
       throws DataAccessException {
   HibernateCallback callback = new HibernateCallback() {

       public Object doInHibernate(Session session) throws HibernateException, SQLException {
      Criteria criteria = session.createCriteria(User.class);
      criteria.add(Restrictions.eq("username", username));
      criteria.add(Restrictions.eq("token", securityToken));
      return (User) criteria.uniqueResult();
       }
   };
   return (User) getHibernateTemplate().execute(callback);
    }

CREATE TABLE  `dta`.`profile` (
  `user_id` int(11) NOT NULL DEFAULT '0',
  `email` varchar(64) NOT NULL,
  `first_name` varchar(30) NOT NULL,
  `last_name` varchar(30) NOT NULL,
  `gender` bit(1) NOT NULL,
  `reg_ip` varchar(254) DEFAULT NULL,
  KEY `user_id` (`user_id`),
  CONSTRAINT `fk_pr_u` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE  `dta`.`user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(21) NOT NULL,
  `password` varchar(32) NOT NULL,
  `token` varchar(32) NOT NULL,
  `enabled` bit(1) NOT NULL DEFAULT b'1',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

<bean id="dataSource"
      class="org.apache.commons.dbcp.BasicDataSource"
      destroy-method="close">
      <property name="driverClassName" value="com.mysql.jdbc.Driver" />
      <property name="url"
         value="jdbc:mysql://localhost:3306/mydb?useUnicode=true" />
      <property name="username" value="login" />
      <property name="password" value="pass" />
   </bean>


   <bean id="sessionFactory"
      class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
      <property name="dataSource" ref="dataSource" />
      <property name="annotatedClasses">
         <list>
            <value>com.dta.model.entity.User</value>
            <value>com.dta.model.entity.Invite</value>
            <value>com.dta.model.entity.Profile</value>
            <value>com.dta.model.entity.UserRole</value>
         </list>
      </property>
      <property name="hibernateProperties">
         <value>
            hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect
            hibernate.show_sql=true
            hibernate.format_sql=true
            hibernate.cglib.use_reflection_optimizer = false
            hibernate.use_sql_comments=true
            hibernate.connection.charSet=UTF-8
         </value>
      </property>
   </bean>

   <tx:annotation-driven transaction-manager="txManager" />

   <bean id="txManager"
      class="org.springframework.orm.hibernate3.HibernateTransactionManager">
      <property name="sessionFactory" ref="sessionFactory" />
   </bean>

   <bean id="userDao" class="com.dta.model.dao.UserDao">
      <property name="sessionFactory" ref="sessionFactory" />
   </bean>