使用附加关系表来休眠一对多映射

Question

I want to have two tables with one to many relation that are linked by third table. How can I approach this? I want to create exactly the same thing as in this tutorial but using one-to-many instead of many-to-many with unique="true"

Answer 1

In Hibernate when you use a @OneToMany annotation without stating a @JoinTable or @JoinColumn a third table will be automatically created to map the relationship, so no worries in just switching the @ManyToMany by @OneToMany, as long you relationship will follow the rules of the annotation.

However, you can try some explicit mapping, so you will be able to control even de column names that will be created by the @OneToMany annotation.

Try something like this:

public class TestClass1 {

    @OneToMany
    @JoinTable(name = "ADDITIONAL TABLE NAME", joinColumns = {
        @JoinColumn(name = "TESTCLASS1_ID")}, inverseJoinColumns = {
        @JoinColumn(name = "TESTCLASS2_ID")})
    private List<TestClass2> listTestClass2;
}

Good luck!