在您的集合中，您可以添加过滤器:

In your set you can add a filter:

<set name="CollegeStudents" table="tstudent_course"
            inverse="true">
    <key>
        <column name="id_course" not-null="true" />
    </key>
    <many-to-many entity-name="CollegeStudent" where="person_type='COLLEGE_STUDENT'">
        <column name="id_person" not-null="true" />
    </many-to-many>
</set>

恕我直言，如果没有该过滤器(只有一组学生)，映射会更好.

IMHO the mapping would be better without that filter (just a set of all students).