hibernate中配置非主键关联(单向一对多)

hibernate中配置非主键关联(单向一对多)

表结构：

create table primaryTable(
primaryTableId int primary key,
refKey varchar(16)--被关联键，注意不是id
)ENGINE=innodb

create table childTable(
childTableId int primary key,
linkRefKey varchar(16)--关联到primaryTable表中的refKey
)ENGINE=innodb

hibernate映射文件：(注意红字部分)

primaryTable.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class
    name="PrimaryTable"
    table="primaryTable">
    <id name="id" type="java.lang.Integer">
     <column name="primaryTableId"/>
     <generator class="assigned"></generator>
    </id>

   <!-- refKey属性必须写，否则hibernate会说找不到这个属性 -->
   <property name="refKey" type="java.lang.String">
     <column name="refKey" length="16" />
    </property>    <set name="childTables" inverse="true">
    <!-- <key column="linkRefKey外键属性" property-ref="refKey" />-->
     <key column="linkRefKey" property-ref="refKey" />
     <one-to-many class="childTable" />
    </set>
</class>
</hibernate-mapping>

childTable.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="childTable" table="childTable">
   <id name="id" type="java.lang.Integer">
    <column name="childTableId" />
    <generator class="assigned"></generator>
   </id>
   <property name="linkRefKey" type="java.lang.String">
    <column name="linkRefKey" length="16" />
   </property>
   </class>
</hibernate-mapping>