Hibernate的映射文件中基于主键的双向1对1的关联

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE hibernate-mapping PUBLIC 
 3     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 4     "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
 5     <hibernate-mapping package="po">
 6     <class name="Bike" table="tb_bike">
 7         <!-- 使用只读缓存   catalog="danche" -->
 8         <cache usage="read-write"/>        
 9         <!-- 映射标识属性 -->
10         <id    name="bikeId" type="integer" column="b_bikeId">
11             <!-- 指定使用identity主键生成策略 -->
12             <generator class="native"/>
13         </id>
14         <!-- 映射普通属性 -->
15         <property name="bikeType" column="b_bikeType"
16             type="java.lang.String" length="45"/>
17         <property name="bikePrice" column="b_bikePrice"
18             type="java.lang.Double"/>
19         <property name="rentPrice" column="b_rentPrice" 
20             type="java.lang.Double"/>
21         <property name="state" column="b_state"
22             type="java.lang.String"/>
23         <property name="picture" column="b_picture"
24             type="java.lang.String"/>
25         <property name="repair" column="b_repair"
26             type="java.lang.Integer"/>
27         <one-to-one name="order"></one-to-one> 
28     </class>
29 </hibernate-mapping>

 1     <hibernate-mapping package="po">
 2     <class name="Order" table="tb_order">
 3         <!-- 使用只读缓存   catalog="danche" -->
 4         <cache usage="read-write"/>        
 5         
 6         <id    name="orderId" type="integer" column="b_orderId">
 7             <generator class="foreign">
 8                 <param name="property">bike</param>
 9             </generator>
10         </id>
11         <!-- 映射普通属性 -->
12         <property name="userId" column="b_userId"
13             type="java.lang.Integer"/>
14         <property name="bikeId" column="b_bikeId"
15             type="java.lang.Integer"/>
16         <property name="orderTime" column="b_orderTime" 
17             type="java.util.Date"/>
18         <!-- 主键双向关联-->
19         <one-to-one name="bike"></one-to-one>
20         </class>
21     </hibernate-mapping>

1 public Order(){
2         
3     }
4 public Order(Integer userId,Integer bikeId,Date orderTime){
5     this.bikeId =bikeId;
6     this.userId = userId;
7     this.orderTime = orderTime;
8 }