Hibernate组件映射代码详解

public class MyName {
	private String firstName;
	private String lastName;
	public String getFirstName() {
		return firstName;
	}
	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}
	public String getLastName() {
		return lastName;
	}
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
}

public class People {
	private Integer pid;
	/*名字通过MyName这个类来组合，即组件关联*/
	private MyName name;
	public Integer getPid() {
		return pid;
	}
	public void setPid(Integer pid) {
		this.pid = pid;
	}
	public MyName getName() {
		return name;
	}
	public void setName(MyName name) {
		this.name = name;
	}
}

<?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 package="com.lixue.bean"> 
  <class name="People" table="t_people"> 
    <id name="pid"> 
      <generator class="native"/> 
    </id> 
     
    <!-- 通过Component来实现主键的映射 --> 
    <component name="name" class="MyName"> 
      <property name="firstName" /> 
      <property name="lastName" /> 
    </component> 
     
  </class> 
</hibernate-mapping> 

public void testSave1(){
	/*定义Session和事物*/
	Session session = null;
	Transaction transaction = null;
	try {
		/*获取Session并开启事物*/
		session = HibernateUtils.getSession();
		transaction = session.beginTransaction();
		/*创建名字*/
		MyName myName = new MyName();
		myName.setFirstName("乔治");
		myName.setLastName("华盛顿");
		/*创建人并设置属性*/
		People people = new People();
		people.setName(myName);
		session.save(people);
		/*提交事物*/
		transaction.commit();
	}
	catch (Exception e) {
		e.printStackTrace();
		transaction.rollback();
	}
	finally{
		HibernateUtils.closeSession(session);
	}
}