Hibernate Annotation 连接表问题

Question

使用 hibernate 注释进行连接表时，如何添加一个不是连接列的额外列，例如，已婚为弱实体？像一个额外的列？

@ManyToMany(targetEntity=some.class,
        cascade ={CascadeType.PERSIST, CascadeType.MERGE}, fetch=FetchType.EAGER)
@JoinTable(name = "RELATION", joinColumns ={
        @JoinColumn(name = "HID", unique = true)
    }, inverseJoinColumns = {
        @JoinColumn(name = "FID")
})
Set<PERSON> PEOPLE = new HashSet<PERSON>(); 

Answer 1

第三列在技术上使该表成为实体，而不是“可连接的”。所以表本身需要是一个实体。从 SQL 的角度考虑。当连接表不仅仅是将两个其他表连接在一起所需的信息时，它是否只是一个连接表？

同样仅供引用，此场景在“Java Persistence (JPA) with Hibernate”的第 7 章中有介绍:

You can use two common strategies to map such a structure to Java classes. The first strategy requires an intermediate entity class for the join table and is mapped with one-to-many associations. The second strategy utilizes a collection of components, with a value-type class for the join table.