Hibernate入门BLOG [五、hibernate的组件]

组建关联关系：组建的配置方式。在JavaBean中引用其他的Javabean中。并且映射到数据库表中。这样就可以使用hibernate提供的组件机制。请看下面这个案例：(Javabean省略set和get方法)1、JavabeanName.Java:public class Name {private String FirstName;private String LastName;}User.java:public class User {private int id;private Name name;   //复合属性private Date birthday;}2、配置文件：<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!--指定映射的类所在的包--><hibernate-mapping package="cn.hibernate.model"><class name="User" table="user"><id name="id"><!-- 主键生成器 --><generator class="native"/></id><!-- 复合组建类型 --><component name="name"><property name="firstName" /><property name="lastName" /></component><property name="birthday"></property></class></hibernate-mapping>3、执行insert操作创建表：public static void main(String args[]){Name n = new Name();n.setFirstName("firstName");n.setLastName("lastname");User u = new User();u.setName(n);u.setBirthday(new Date());Session s = HibernateUtil.getSession();Transaction tr = s.beginTransaction();s.save(u);tr.commit();}

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