JpaRepository查找子项（可分页）

Question

I came across a problem that I can not solve.

I want to find Class1 elements with "Active" status, which have "Active" status2 on Class2 and belong to a specific user .

Eg: Find all "Accepted" comments, which belong to "John" posted on post with status "Active".

I tried to use this (JpaRepository):

Page<Class1> findAllByStatusAndClass2StatusAndClass2User(String status, String status2, User user, Pageable pageRequest)

My code:

@Entity
@Table(name = "class1")
public class Class1 {
...

    @OneToMany(mappedBy = "class1")
    private Set<Class2> class2;

    String status1;
...
}

@Entity
@Table(name = "class2")
public class Class2 {
...

    @ManyToOne
    @JoinColumn(name = "class1_id", nullable = false)
    private Class1 class1;

    User user;       
    String status2;
...
}

Thank you for help.

Answer 1

In fact with JPARepository, your method name and params should respect the fields names in your entities.

So you need to use status1 instead of status and Class2Status2 instead of Class2Status .

Your method should be like this:

Page<Class1> findAllByStatus1AndClass2Status2AndClass2User(String status1, String status2, User user, Pageable pageRequest)