2.hibernate一对多的关系映射
多对多的关系映射
create table tb_teacher(
id number primary key,
name varchar2(50) not null
);
create table tb_student
(
id number primary key,
name varchar2(50) not null
);
create table tb_thtost
(
th_id number references tb_teacher(id),
st_id number references tb_student(id),
primary key(th_id,st_id)
);
<class name="Teacher" table="tb_Teacher">
<id name="id">
<generator class="increment"/>
</id>
<property name="teachName" column="name"/>
<set name="stuSet" table="tb_thtost" lazy="false">
<key column="th_id"></key>
<many-to-many class="Student" column="st_id"/>
</set>
</class>
<class name="Student" table="tb_student">
<id name="id">
<generator class="increment"/>
</id>
<property name="stuName" column="name"/>
<set name="teachSet" table="tb_thtost" lazy="false">
<key column="st_id"/>
<many-to-many class="Teacher" column="th_id"/>
</set>
</class>
