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hibernate开发-部件映射

admin 11月 11, 2020 0

文章目录

需求：汽车类对应一个车轮类

JavaBean

public class  {

	private int car_id;
	private String car_name;
	private Wheel wheel;

    省略get set方法
	}

public class Wheel {

	private int wheel_count;
	private int wheel_size;
    省略get set方法
}

Car.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="Zuhe">

<class name="Car" table="t_car">

<id name="car_id" column="cid">
<generator class="native"></generator>
</id>
<property name="car_name" column="cname" type="string"></property>

<component name="wheel" class="Wheel" >
<property name="wheel_count" ></property>
<property name="wheel_size"></property>
</component>

</class>
</hibernate-mapping>