finish major controller

back-skeleton/README.MD

@@ -2,6 +2,7 @@
 
 ## Set up 
 1. Copie-colle le .env.sample en .env
+2. Fait un `docker-compose up`
 2. Rajoute le pluggin : https://plugins.jetbrains.com/plugin/7861-envfile
 3. <img src="img-readme/img.png">
 3. <img src="img-readme/img_1.png">

back-skeleton/src/main/java/com/takima/backskeleton/DAO/MajorDao.java

+package com.takima.backskeleton.DAO;
+
+import com.takima.backskeleton.models.Major;
+import com.takima.backskeleton.models.Student;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface MajorDao extends JpaRepository<Major, Long> {
+    @Query("SELECT m.students FROM Major m WHERE m.id= :majorId")
+    List<Student> getAllStudentsFromMajor(Long majorId);
+}

back-skeleton/src/main/java/com/takima/backskeleton/controllers/MajorController.java

+package com.takima.backskeleton.controllers;
+
+import com.takima.backskeleton.models.Major;
+import com.takima.backskeleton.models.Student;
+import com.takima.backskeleton.services.MajorService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@CrossOrigin
+@RequestMapping("majors")
+@RestController
+@RequiredArgsConstructor
+public class MajorController {
+    private final MajorService majorService;
+
+    @GetMapping("")
+    public List<Major> findAll() {
+        return majorService.findAll();
+    }
+
+    @GetMapping("/{id}/students")
+    public List<Student> getStudentsOfMajor(@PathVariable Long id) {
+        return majorService.getStudentsOfMajor(id);
+    }
+}

back-skeleton/src/main/java/com/takima/backskeleton/models/Course.java

 package com.takima.backskeleton.models;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
-import com.fasterxml.jackson.annotation.JsonManagedReference;
 import jakarta.persistence.*;
-import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 

back-skeleton/src/main/java/com/takima/backskeleton/models/Major.java

@@ -2,7 +2,6 @@ package com.takima.backskeleton.models;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.persistence.*;
-import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 

back-skeleton/src/main/java/com/takima/backskeleton/services/MajorService.java

+package com.takima.backskeleton.services;
+
+import com.takima.backskeleton.DAO.MajorDao;
+import com.takima.backskeleton.models.Major;
+import com.takima.backskeleton.models.Student;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Component
+@RequiredArgsConstructor
+public class MajorService {
+    private final MajorDao majorDao;
+    public List<Major> findAll() {
+        Iterable<Major> it = majorDao.findAll();
+        List <Major> majors = new ArrayList<>();
+        it.forEach(majors::add);
+        return majors;
+    }
+
+    public List<Student> getStudentsOfMajor(Long id) {
+        return majorDao.getAllStudentsFromMajor(id);
+    }
+}