Spring JPA乘以复杂关系M：N和1：N的嵌套表

Question

I am trying to build a simple API which provides some data to the frontend.

I am struggling with database and association to the entities in Spring. Let's go step by step so you understand clearly what I need.

My example is very similar to this course: https://www.baeldung.com/jpa-many-to-many . Look at the 3.1 section.

1) Let's say, we have a student table and course table. Between these, there is a join table (let's call it for example studentCourseJoin ). Ok, this seems to be nearly same as presented on Baeldung site. But in my case I need to have additional table ratings which is separated from join table. And assume that Student can rate course multiple times (let's say once a year)

2) My goal is to have data structure like this:

{
  students: [
    {
      studentID: 1,
      courses: [
        {
          courseID: 1,
          ratings: [{
            ratingID: 1,
            studentID: 1
          }]
        }
      ]
    }
  ]
}

So, if I have a student with ID 1, I want to list all his courses and all his ratings he made to the given course (as presented in the example).

I am having problem with ratings. Because I always get all ratings to the given course no matter who made the rating. Basically I am missing just one WHERE clause.

Example result:

{
  students: [
    {
      studentID: 1,
      courses: [
        {
          courseID: 1,
          ratings: [{
            ratingID: 1,
            studentID: 1
          },{
            ratingID: 2,
            studentID: 5
          }]
        }
      ]
    }
  ]

Making a custom query isn't hard.. It's just about 3 JOIN s. But that is not what I want. I want to set up all entities right, so Hibernate can automatically make queries, delete orphans etc...

3) Input data: studentID: 1 (and another scenario: studentID: 1, yearRated: 2020 )

4) My question? How can I integrate ratings table so it applies filter WHERE studentId == 1 . In seconds scenario WHERE studentId == 1 AND yearRated == 2020

What schema would I choose between these 2 ? Or do you propose different?

Schema 1

Schema 2

I am missing FK definition in rating table in Schema 2 (just ignore it)

I am a beginner with Spring JPA so I am missing some experience and this could be an easy question. Locally my database has quite different names and much more columns and absolutely different purpose. But I wanted to make this example as easy as possible.

For now, let's assume I have entity for each table (except join table) and I have correctly configured M:N relationship with @ManyToMany and @Jointable decorators

Edit

Let's say, that I would like to use Schema 2. Question is, am I able to create a method name which will automatically create query with required result? (Paragraph 3). If so, what are the requirements? Do I have to create entity for join table and also embeddable entity for composite key ? and how exactly do I join rating table with this join table?

EDIT 2

I created a new question which is simplified and should be more understandable.

Answer 1

If you choose Schema 2 Than you can not get the desired result, because a student must not visit the course to rate the course. You expect the ratings under the courses, but there are independent.