public class Employee {

	/**用户标识**/

	private Integer id;

	/**员工用户名**/

	private String username;

	/**员工名字**/

	private String name;

	/**员工密码**/

	private String password;

	/**电话**/

	private Integer phone;

	/**最近登入IP**/

	private String ip;

	/**生日**/

	private Date birthday;

}

/**

 *组长

 ***/

public class HeadMan extends Employee{

	private Set<Spreader> spreaders;

	private Set<Hospital> hospitals;

public class Spreader {

	/**所属组长**/

	private HeadMan headMan;

	/**所属医院部门**/

	private Division diversion;

	/**推广的关键词**/

	private Set<Keyword> keywords;

<!DOCTYPE hibernate-mapping PUBLIC 

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

	"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<!-- Hibernate映射文件的根元素 -->

<hibernate-mapping package="com.heping.oa.entity.main">

	<class name="Employee" table="hp_employee">

		<cache usage="read-only"/>

		<id name="id" type="java.lang.Integer" column="emp_id"><generator class="identity"/></id>

		<property name="name" column="emp_name" type="string" not-null="true" unique="true" length="64"/>

		<property name="username" column="emp_username" type="string" not-null="true" unique="true" length="64"/>

		<property name="password" column="emp_password" type="string" not-null="true" length="64"/>

		<property name="phone" column="emp_phone" type="integer" unique="true" not-null="true" length="32"/>

		<property name="ip" column="emp_ip" type="integer" length="32" />

		<property name="birthday" column="emp_birthday" type="timestamp"/>

		<joined-subclass name="com.heping.oa.entity.main.Spreader" table="hp_spreader">

			<key column="emp_id"/>

			<many-to-one name="headMan" column="headman_id" class="Spreader"></many-to-one>

			<many-to-one name="division" column="division_id" class="Division"></many-to-one>

			<set name="keywords" inverse="true" table="hp_keyword" cascade="sava-update">

				<cache usage="read-write" />

				<key column="emp_id" />

				<one-to-many class="com.heping.oa.entity.main.Keyword" />

			</set>

		</joined-subclass>

		<joined-subclass name="com.heping.oa.entity.main.HeadMan" table="hp_headman">

			<key column="emp_id" />

			<set name="spreaders" inverse="true" cascade="delete">

				<cache usage="read-write" />

				<key column="emp_id" />

				<one-to-many class="com.heping.oa.entity.main.Spreader"/>

			</set>				

			<set name="hospitals" inverse="true" cascade="delete">

				<cache usage="read-write" />

				<key column="emp_id" />

				<one-to-many class="com.heping.oa.entity.main.Hospital" /