Question

hbm.xml配置多个主键的问题，求高手高手！！！

我现在的代码是：<?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="com.jxzhglxt.senateManage.entity">

<class name="EduAddTime" table="xybsb">
<id name="xybh" column="xybh" >
<generator class="native"></generator>
</id>
<property name="bsyy" column="bsyy"></property>
<property name="kssj" column="kssj"></property>
<property name="jssj2" column="jssj2"></property>
</class>
</hibernate-mapping>，主键是xybh和ch，配置好xybh后，不知道怎么配置ch，求教啊

Answer 1

要用联合主键的配置方法：
<composite-id >
<key-property name="xybh" column="xybh" type=类型设置></key-property>
<key-property name="ch" column="ch" type=类型设置></key-property>
</composite-id>
或者可以把联合主键提取出来作为一个类，类根据业务覆盖equals方法
<composite-id name="uionPKID" class="类">
<key-property name="xybh" column="xybh" type=类型设置></key-property>
<key-property name="ch" column="ch" type=类型设置></key-property>
</composite-id>