add json ignore to student ✅

Author: bassem97

src/main/java/com/gdsc/springbootworkshop/controllers/ClassroomController.java

@@ -0,0 +1,50 @@
+package com.gdsc.springbootworkshop.controllers;
+
+import com.gdsc.springbootworkshop.entites.Classroom;
+import com.gdsc.springbootworkshop.entites.Student;
+import com.gdsc.springbootworkshop.services.classroom.ClassroomService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("classrooms")
+public class ClassroomController {
+
+    @Autowired
+    ClassroomService classroomService;
+
+
+    @GetMapping("")
+    List<Classroom> findAllClassrooms(){
+        return classroomService.getAll() ;
+    }
+
+    @PostMapping("")
+    Classroom addClassroom(@RequestBody Classroom classroom) throws Exception {
+        return classroomService.add(classroom);
+    }
+
+    @PutMapping("/{id}")
+   Classroom updateClassroom(@PathVariable("id") Long id,@RequestBody Classroom classroom) throws Exception {
+        return classroomService.update(id,classroom);
+    }
+
+    @DeleteMapping("/{id}")
+    void deleteStudent(@PathVariable("id") Long id){
+       classroomService.delete(id);
+    }
+
+    @GetMapping("/{id}")
+   Classroom findById(@PathVariable("id") Long id){
+        return classroomService.findById(id);
+    }
+
+//    @GetMapping("findStudentsByClassroomName/{name}")
+//    public List<Student> getStudentsByClassroomName(@PathVariable("name") String name) {
+//        return classroomService.getStudentsByClassroomName(name);
+//    }
+
+
+}

src/main/java/com/gdsc/springbootworkshop/controllers/StudentController.java

@@ -1,11 +1,10 @@
 package com.gdsc.springbootworkshop.controllers;
 
 import com.gdsc.springbootworkshop.entites.Student;
-import com.gdsc.springbootworkshop.services.StudentService;
+import com.gdsc.springbootworkshop.services.student.StudentService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
-import javax.websocket.server.PathParam;
 import java.util.List;
 
 @RestController
@@ -17,22 +16,22 @@ public class StudentController {
 
     @GetMapping("")
     List<Student> findAllStudents(){
-        return studentService.getAllStudents();
+        return studentService.getAll();
     }
 
     @PostMapping("")
     Student  addStudent(@RequestBody Student student) throws Exception {
-        return studentService.addStudent(student);
+        return studentService.add(student);
     }
 
     @PutMapping("/{id}")
     Student updateStudent(@PathVariable("id") Long id, @RequestBody Student student){
-        return studentService.updateStudent(id, student);
+        return studentService.update(id, student);
     }
 
     @DeleteMapping("/{id}")
     void deleteStudent(@PathVariable("id") Long id){
-        studentService.deleteStudent(id);
+        studentService.delete(id);
     }
 
     @GetMapping("/{id}")

src/main/java/com/gdsc/springbootworkshop/entites/Classroom.java

@@ -0,0 +1,25 @@
+package com.gdsc.springbootworkshop.entites;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+public class Classroom {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long idClassroom;
+
+    @Column(unique = true)
+    private String name;
+
+    @OneToMany()
+    @JoinColumn(name = "idClassroom")
+    List<Student> students;
+}

src/main/java/com/gdsc/springbootworkshop/entites/Student.java

@@ -1,6 +1,7 @@
 package com.gdsc.springbootworkshop.entites;
 
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -27,6 +28,11 @@ public class Student {
     @Enumerated(EnumType.STRING)
     private GENDER gender;
 
+    @ManyToOne()
+    @JoinColumn(name = "idClassroom")
+    @JsonIgnoreProperties({"students"})
+    private Classroom classroom;
+
     public Student(String firstName, String lastName, String email, GENDER gender) {
         this.firstName = firstName;
         this.lastName = lastName;

src/main/java/com/gdsc/springbootworkshop/repositories/ClassroomRepository.java

@@ -0,0 +1,12 @@
+package com.gdsc.springbootworkshop.repositories;
+
+import com.gdsc.springbootworkshop.entites.Classroom;
+import com.gdsc.springbootworkshop.entites.Student;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface ClassroomRepository extends JpaRepository<Classroom, Long> {
+
+    Classroom findByName(String name);
+}

src/main/java/com/gdsc/springbootworkshop/services/ICrudService.java

@@ -0,0 +1,10 @@
+package com.gdsc.springbootworkshop.services;
+
+import java.util.List;
+
+public interface ICrudService <Class,TypeId> {
+    List<Class> getAll();
+    Class add(Class class1) throws Exception;
+    Class update(TypeId typeId,Class class1) throws Exception;
+    void delete(TypeId typeId);
+}

src/main/java/com/gdsc/springbootworkshop/services/IStudentService.java

@@ -0,0 +1,48 @@
+package com.gdsc.springbootworkshop.services.classroom;
+
+import com.gdsc.springbootworkshop.entites.Classroom;
+import com.gdsc.springbootworkshop.repositories.ClassroomRepository;
+import com.gdsc.springbootworkshop.services.ICrudService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ClassroomService implements IClassroomService, ICrudService<Classroom,Long> {
+
+    @Autowired
+    private ClassroomRepository studentRepository;
+
+    @Override
+    public List<Classroom> getAll() {
+        return studentRepository.findAll();
+    }
+
+    @Override
+    public Classroom add(Classroom classroom) throws Exception {
+        if(studentRepository.findByName(classroom.getName()) != null)
+            throw new Exception("Classroom already exists");
+        return studentRepository.save(classroom);
+    }
+
+    @Override
+    public Classroom update(Long id, Classroom classroom) {
+        if(studentRepository.findById(id).isPresent()){
+            Classroom toUpdateClassroom = studentRepository.findById(id).get();
+            toUpdateClassroom.setName(classroom.getName());
+            return studentRepository.save(toUpdateClassroom);
+        }
+        return null;
+    }
+
+    @Override
+    public void delete(Long id) {
+        studentRepository.deleteById(id);
+    }
+
+    @Override
+    public Classroom findById(Long id) {
+        return studentRepository.findById(id).get();
+    }
+}

src/main/java/com/gdsc/springbootworkshop/services/classroom/ClassroomService.java

@@ -0,0 +1,10 @@
+package com.gdsc.springbootworkshop.services.classroom;
+
+import com.gdsc.springbootworkshop.entites.Classroom;
+
+import java.util.List;
+
+public interface IClassroomService {
+
+    Classroom findById(Long id);
+}

src/main/java/com/gdsc/springbootworkshop/services/classroom/IClassroomService.java

@@ -0,0 +1,10 @@
+package com.gdsc.springbootworkshop.services.student;
+
+import com.gdsc.springbootworkshop.entites.Student;
+
+import java.util.List;
+
+public interface IStudentService {
+
+    Student findById(Long id);
+}

src/main/java/com/gdsc/springbootworkshop/services/student/IStudentService.java

@@ -1,32 +1,34 @@
-package com.gdsc.springbootworkshop.services;
+package com.gdsc.springbootworkshop.services.student;
 
+import com.gdsc.springbootworkshop.entites.Classroom;
 import com.gdsc.springbootworkshop.entites.Student;
 import com.gdsc.springbootworkshop.repositories.StudentRepository;
+import com.gdsc.springbootworkshop.services.ICrudService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
 
 @Service
-public class StudentService implements IStudentService {
+public class StudentService implements IStudentService , ICrudService<Student,Long> {
 
     @Autowired
     private StudentRepository studentRepository;
 
     @Override
-    public List<Student> getAllStudents() {
+    public List<Student> getAll() {
         return studentRepository.findAll();
     }
 
     @Override
-    public Student addStudent(Student student) throws Exception {
+    public Student add(Student student) throws Exception {
         if(studentRepository.findByEmail(student.getEmail()) != null)
             throw new Exception("Student already exists");
         return studentRepository.save(student);
     }
 
     @Override
-    public Student updateStudent(Long id, Student student) {
+    public Student update(Long id, Student student) {
         if(studentRepository.findById(id).isPresent()){
             Student toUpdateStudent = studentRepository.findById(id).get();
             toUpdateStudent.setFirstName(student.getFirstName());
@@ -39,7 +41,7 @@ public Student updateStudent(Long id, Student student) {
     }
 
     @Override
-    public void deleteStudent(Long id) {
+    public void delete(Long id) {
         studentRepository.deleteById(id);
     }