休眠：如何映射加入額外列的表沒有JPA註釋

Question

假設我有以下類別：

class Student{ 
    String name; 
    List<StudentClassMark> courseMarks; 
} 

class Class { 
    String title; 
} 

class StudentClassMark { 
    Student student; 
    Class class; 
    MarkType markType; <-- notice this is the extra column that is causing problems 
} 

class MarkType { 
    String description; 
} 

如何映射使用Hibernate映射文件（所以沒有JPA註解）名單？這是我的嘗試：

<class name="Student" table="PERSON"> 
    <property name="name" column="NAME"/> 
    <bag name="courseMarks" inverse="false" cascade="all" table="STUDENT_CLASS_MARK"> 
     <key column="STUDENT" /> 
     <many-to-many> <-- this is the section that I don't know how to do 
      <column name="CLASS"/> 
      <column name="MARK_TYPE"/> 
     </many-to-many> 
    </bag> 
</class> 

我發現的例子都使用JPA符號，我不能使用。

謝謝

Answer 1

好的，所以我想通了。這裏是正確的映射（我希望它可以幫助別人）：

<class name="Student" table="PERSON"> 
    <property name="name" column="NAME"/> 
    <bag name="courseMarks" inverse="false" cascade="all" table="STUDENT_CLASS_MARK"> 
     <key column="STUDENT" /> 
     <composite-element class="StudentClassMark"> 
      <many-to-one name="class" column="CLASS" /> 
      <many-to-one name="markType" column="MARK_TYPE" /> 
     </composite-element> 
    </bag> 
</class> 

<class name="StudentClassMark" table="StudentClassMark"> 
    <property name="description" column="DESCRIPTION"/> 
</class>