Course

src/main/java/com/school/project/controller/CourseController.java

 package com.school.project.controller;
 
-import com.fasterxml.jackson.databind.annotation.JsonAppend;
-import com.school.project.dto.CourseDTO;
-import com.school.project.repository.modelRepositery.CourseRepository;
+
+import com.school.project.dto.course.CourseRegisterDTO;
 import com.school.project.service.course.CourseServiceImp;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
@@ -20,10 +19,10 @@ public class CourseController {
     private CourseServiceImp courseServiceImp;
 
     @PostMapping("/save")
-    private ResponseEntity saveCourse(@RequestBody CourseDTO course) {
+    private ResponseEntity saveCourse(@RequestBody CourseRegisterDTO course) {
         try {
             courseServiceImp.saveCourse(course);
-            return ResponseEntity.ok("Department Saved");
+            return ResponseEntity.ok("Course Saved");
         } catch (Exception e) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Data Is Not Correct", e);
         }

src/main/java/com/school/project/controller/DepartmentController.java

 package com.school.project.controller;
 
-import com.school.project.dto.DepartmentDTO;
+import com.school.project.dto.department.DepartmentRegisterDTO;
 import com.school.project.service.department.DepartmentServiceImp;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
@@ -19,7 +19,7 @@ public class DepartmentController {
     private DepartmentServiceImp departmentServiceImp;
 
     @PostMapping("/save")
-    private ResponseEntity saveDepartment(@RequestBody DepartmentDTO department){
+    private ResponseEntity saveDepartment(@RequestBody DepartmentRegisterDTO department){
         try {
             departmentServiceImp.saveDepartment(department);
             return ResponseEntity.ok("Department Saved");

src/main/java/com/school/project/controller/RegistrationController.java

@@ -4,11 +4,10 @@ package com.school.project.controller;
 import com.school.project.dto.userRegistration.AdminRegistrationDTO;
 import com.school.project.dto.userRegistration.StudentRegistrationDTO;
 import com.school.project.dto.userRegistration.TeacherRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 import com.school.project.service.userRegistration.admin.AdminRegistrationService;
 import com.school.project.service.userRegistration.student.StudentRegistrationService;
 import com.school.project.service.userRegistration.teacher.TeacherRegistrationService;
-import lombok.AllArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
@@ -32,9 +31,9 @@ public class RegistrationController {
     private AdminRegistrationService adminRegistrationService;
 
     @PostMapping("/student")
-    public ResponseEntity<UserDTO> registerStudent(@RequestBody StudentRegistrationDTO student) {
+    public ResponseEntity<UserRegistrationDTO> registerStudent(@RequestBody StudentRegistrationDTO student) {
         try {
-            UserDTO userDTO = studentRegistrationService.registerStudent(student);
+            UserRegistrationDTO userDTO = studentRegistrationService.registerStudent(student);
             return ResponseEntity.ok(userDTO);
         } catch (Exception e) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Data is not correct", e);
@@ -42,9 +41,9 @@ public class RegistrationController {
     }
 
     @PostMapping("/teacher")
-    public ResponseEntity<UserDTO> registerTeacher(@RequestBody TeacherRegistrationDTO teacher) {
+    public ResponseEntity<UserRegistrationDTO> registerTeacher(@RequestBody TeacherRegistrationDTO teacher) {
         try {
-            UserDTO userDTO = teacherRegistrationService.registerTeacher(teacher);
+            UserRegistrationDTO userDTO = teacherRegistrationService.registerTeacher(teacher);
             return ResponseEntity.ok(userDTO);
         } catch (Exception e) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Data is not correct", e);
@@ -52,9 +51,9 @@ public class RegistrationController {
     }
 
     @PostMapping("/admin")
-    public ResponseEntity<UserDTO> registerAdmin(@RequestBody AdminRegistrationDTO admin) {
+    public ResponseEntity<UserRegistrationDTO> registerAdmin(@RequestBody AdminRegistrationDTO admin) {
         try {
-            UserDTO userDTO = adminRegistrationService.registerAdmin(admin);
+            UserRegistrationDTO userDTO = adminRegistrationService.registerAdmin(admin);
             return ResponseEntity.ok(userDTO);
         } catch (Exception e) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Data is not correct", e);

src/main/java/com/school/project/controller/StudentController.java

 package com.school.project.controller;
 
 
-import com.school.project.model.Student;
+import com.school.project.dto.student.StudentCourseRegistrationDTO;
+import com.school.project.dto.student.StudentCoursesDTO;
+import com.school.project.dto.student.StudentViewDataDTO;
+import com.school.project.service.courseRegistration.CourseRegistrationService;
 import com.school.project.service.student.StudentServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.annotation.CurrentSecurityContext;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+
+import java.security.Principal;
+import java.util.List;
+import java.util.Set;
 
 @RestController
 @RequestMapping("/student")
@@ -18,12 +22,25 @@ public class StudentController {
     @Autowired
     private StudentServiceImpl studentService;
 
-    @GetMapping("/data/{id}")
-    public Student getUserDetails(@CurrentSecurityContext(expression = "authentication")
-                                   Authentication authentication , @PathVariable("id") Long id) {
+    @Autowired
+    private CourseRegistrationService courseRegistrationService;
+
+    @GetMapping("")
+    public StudentViewDataDTO getUserDetails(@CurrentSecurityContext(expression = "authentication") Authentication authentication) {
+
+        return studentService.viewData(authentication.getName());
+
+    }
+
+    @GetMapping("/course")
+    public StudentCoursesDTO showCourses(Principal principal) {
+
+        return studentService.viewCourses(studentService.getUserId(principal.getName()));
+    }
+
+    @PostMapping("/course/register")
+    public void registerCourses(Principal principal, @RequestBody Set<StudentCourseRegistrationDTO> courses) {
 
-        Student student = studentService.viewData(id);
-//        Student student = studentService.viewData(authentication.getName());
-        return student;
+        courseRegistrationService.courseRegistration(studentService.getUserId(principal.getName()), courses);
     }
 }

src/main/java/com/school/project/controller/UserController.java

@@ -6,6 +6,7 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.security.Principal;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -15,15 +16,20 @@ public class UserController {
 
     @GetMapping("/user")
     public List<String> currentUserName(@CurrentSecurityContext(expression = "authentication")
-                                  Authentication authentication) {
+                                  Authentication authentication, Principal principal) {
 
         List<String> data = new ArrayList<>();
+
         data.add(authentication.getName());
         data.add(String.valueOf(authentication.getAuthorities()));
         data.add(String.valueOf(authentication.getCredentials()));
         data.add(String.valueOf(authentication.getDetails()));
         data.add(String.valueOf(authentication.getPrincipal()));
 
+        data.add("\nNow Here Is Principal Details\n");
+
+        data.add(principal.getName());
+
         return data;
     }
 }

src/main/java/com/school/project/dto/CourseDTO.java → src/main/java/com/school/project/dto/course/CourseRegisterDTO.java

-package com.school.project.dto;
+package com.school.project.dto.course;
 
-import com.school.project.model.Student;
-import com.school.project.model.Teacher;
 import lombok.Data;
 
-import java.util.List;
-
 @Data
-public class CourseDTO {
+public class CourseRegisterDTO {
 
     private String courseName;
 

src/main/java/com/school/project/dto/DepartmentDTO.java → src/main/java/com/school/project/dto/department/DepartmentRegisterDTO.java

-package com.school.project.dto;
+package com.school.project.dto.department;
 
 import lombok.Data;
 
 @Data
-public class DepartmentDTO {
+public class DepartmentRegisterDTO {
 
     private String name;
 

src/main/java/com/school/project/dto/student/StudentCourseRegistrationDTO.java

+package com.school.project.dto.student;
+
+
+import lombok.Data;
+
+@Data
+public class StudentCourseRegistrationDTO {
+
+    private String courseName;
+
+}

src/main/java/com/school/project/dto/student/StudentCoursesDTO.java

+package com.school.project.dto.student;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.school.project.model.Course;
+import jdk.jfr.DataAmount;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+
+import java.util.List;
+import java.util.Set;
+
+@Data
+@EqualsAndHashCode(exclude = "courseList")
+@ToString(exclude = "courseList")
+public class StudentCoursesDTO {
+
+    private String studentName;
+    private String studentRollNumber;
+    private Set<Course> courseList;
+}

src/main/java/com/school/project/dto/student/StudentViewDataDTO.java

+package com.school.project.dto.student;
+
+import lombok.Data;
+
+@Data
+public class StudentViewDataDTO {
+
+    private String name;
+    private String rollNumber;
+    private Long age;
+
+}

src/main/java/com/school/project/dto/userRegistration/UserDTO.java → src/main/java/com/school/project/dto/userRegistration/UserRegistrationDTO.java

@@ -6,7 +6,7 @@ import lombok.Data;
 
 @Data
 @AllArgsConstructor
-public class UserDTO {
+public class UserRegistrationDTO {
 
     private Long userId;
     private String email;

src/main/java/com/school/project/mapper/StudentCoursesMapper.java

+package com.school.project.mapper;
+
+import com.school.project.dto.student.StudentCoursesDTO;
+import com.school.project.model.Student;
+import org.springframework.stereotype.Component;
+
+@Component
+public class StudentCoursesMapper {
+
+    public StudentCoursesDTO modelToDto(Student student) {
+        StudentCoursesDTO coursesDTO = new StudentCoursesDTO();
+
+        coursesDTO.setStudentName(student.getName());
+        coursesDTO.setStudentRollNumber(student.getRollNumber());
+        coursesDTO.setCourseList(student.getCourseLists());
+
+        return coursesDTO;
+    }
+}

src/main/java/com/school/project/mapper/StudentViewDataMapper.java

+package com.school.project.mapper;
+
+import com.school.project.dto.student.StudentViewDataDTO;
+import com.school.project.model.Student;
+import org.mapstruct.Mapper;
+import org.springframework.stereotype.Component;
+
+@Component
+public class StudentViewDataMapper {
+
+    public StudentViewDataDTO modelToDto(Student student) {
+
+        StudentViewDataDTO studentViewDataDTO = new StudentViewDataDTO();
+
+        studentViewDataDTO.setName(student.getName());
+        studentViewDataDTO.setRollNumber(student.getRollNumber());
+        studentViewDataDTO.setAge(student.getAge());
+
+        return studentViewDataDTO;
+    }
+}

src/main/java/com/school/project/model/Course.java

@@ -2,18 +2,18 @@ package com.school.project.model;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.sun.istack.NotNull;
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.NoArgsConstructor;
-import lombok.RequiredArgsConstructor;
+import lombok.*;
 
 import javax.persistence.*;
 import java.util.List;
+import java.util.Set;
 
 @Data
 @Entity()
 @NoArgsConstructor
 @Table(name = "Course")
+@EqualsAndHashCode(exclude = {"studentList","teacherList"})
+@ToString(exclude = {"studentList","teacherList"})
 public class Course {
 
     @Id
@@ -28,12 +28,12 @@ public class Course {
     @Column(name = "courseCode",unique = true)
     private String courseCode;
 
-    @ManyToMany(fetch = FetchType.LAZY, mappedBy = "courseLists")
+    @ManyToMany(fetch = FetchType.LAZY, mappedBy = "courseLists",cascade = CascadeType.MERGE)
     @JsonIgnore
-    private List<Student> studentList;
+    private Set<Student> studentList;
 
     @ManyToMany(fetch = FetchType.LAZY, mappedBy = "courseList")
     @JsonIgnore
-    private List<Teacher> teacherList;
+    private Set<Teacher> teacherList;
 
 }

src/main/java/com/school/project/model/Student.java

@@ -5,17 +5,23 @@ import com.school.project.model.Course;
 import com.school.project.model.userRegistration.User;
 import com.sun.istack.NotNull;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import lombok.ToString;
+import org.hibernate.annotations.Fetch;
+import org.hibernate.annotations.FetchMode;
 import org.springframework.context.annotation.Lazy;
 
 import javax.persistence.*;
 import java.util.List;
+import java.util.Set;
 
 @Data
 @Entity()
 @NoArgsConstructor
 @Table(name = "Student")
+@EqualsAndHashCode(exclude = {"courseLists"})
+@ToString(exclude = {"courseLists","studentAppUser"})
 public class Student {
 
     @Id
@@ -36,18 +42,18 @@ public class Student {
     private Long age;
 
     @JsonIgnore
-    @ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.MERGE})
+    @ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.ALL})
+    @Fetch(value= FetchMode.SELECT)
     @JoinTable(
             name = "studentsCourses",
             joinColumns = {@JoinColumn(name = "student_id")},
             inverseJoinColumns = {@JoinColumn(name = "course_id")}
     )
-    private List<Course> courseLists;
+    private Set<Course> courseLists;
 
-    @OneToOne
+    @OneToOne(fetch = FetchType.LAZY)
     @MapsId
     @JoinColumn(name = "student_id")
-    @Lazy
-    @ToString.Exclude
+    @JsonIgnore
     private User studentAppUser;
 }

src/main/java/com/school/project/model/Teacher.java

@@ -12,6 +12,7 @@ import org.springframework.context.annotation.Lazy;
 
 import javax.persistence.*;
 import java.util.List;
+import java.util.Set;
 
 @Data
 @Entity
@@ -43,13 +44,13 @@ public class Teacher {
     private Department department;
 
     @JsonIgnore
-    @ManyToMany(fetch = FetchType.EAGER, cascade = {CascadeType.MERGE})
+    @ManyToMany(fetch = FetchType.EAGER, cascade = {CascadeType.ALL})
     @JoinTable(
             name = "teachersCourses",
             joinColumns = {@JoinColumn(name = "teacher_id")},
             inverseJoinColumns = {@JoinColumn(name = "course_id")}
     )
-    private List<Course> courseList;
+    private Set<Course> courseList;
 
     @OneToOne(fetch = FetchType.LAZY)
     @MapsId

src/main/java/com/school/project/model/userRegistration/Admin.java

@@ -21,10 +21,10 @@ public class Admin {
     @Column(name = "admin_name")
     private String name;
 
-    @OneToOne
+    @OneToOne(fetch = FetchType.LAZY)
     @MapsId
     @JoinColumn(name = "admin_id")
-    @Lazy
     @ToString.Exclude
+    @JsonIgnore
     private User adminAppUser;
 }

src/main/java/com/school/project/model/userRegistration/User.java

 package com.school.project.model.userRegistration;
 
 
-import com.fasterxml.jackson.annotation.JsonFilter;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.school.project.model.Student;
 import com.school.project.model.Teacher;
@@ -36,19 +35,22 @@ public class User {
     @NotNull
     private Role role;
 
-    @OneToOne(mappedBy = "studentAppUser", cascade = {CascadeType.MERGE}, fetch = FetchType.LAZY)
+    @OneToOne(mappedBy = "studentAppUser", cascade = {CascadeType.ALL}, fetch = FetchType.LAZY)
     @PrimaryKeyJoinColumn
     @ToString.Exclude
+    @JsonIgnore
     private Student studentUser;
 
-    @OneToOne(mappedBy = "teacherAppUser", cascade = {CascadeType.MERGE}, fetch = FetchType.LAZY)
+    @OneToOne(mappedBy = "teacherAppUser", cascade = {CascadeType.ALL}, fetch = FetchType.LAZY)
     @PrimaryKeyJoinColumn
     @ToString.Exclude
+    @JsonIgnore
     private Teacher teacherUser;
 
-    @OneToOne(mappedBy = "adminAppUser", cascade = {CascadeType.MERGE}, fetch = FetchType.LAZY)
+    @OneToOne(mappedBy = "adminAppUser", cascade = {CascadeType.ALL}, fetch = FetchType.LAZY)
     @PrimaryKeyJoinColumn
     @ToString.Exclude
+    @JsonIgnore
     private Admin adminUser;
 
 }

src/main/java/com/school/project/repository/modelRepositery/CourseRepository.java

@@ -4,4 +4,5 @@ import com.school.project.model.Course;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface CourseRepository extends JpaRepository<Course,Long> {
+    Course findByCourseName(String name);
 }

src/main/java/com/school/project/repository/modelRepositery/StudentRepository.java

@@ -4,4 +4,6 @@ import com.school.project.model.Student;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface StudentRepository extends JpaRepository<Student,Long> {
+
+    public Student findByStudentId(Long id);
 }

src/main/java/com/school/project/security/OAuth2ServerConfiguration.java

@@ -49,11 +49,11 @@ public class OAuth2ServerConfiguration {
                     .and()
                     .authorizeRequests()
                     .antMatchers("/register/**").permitAll()
-                    .antMatchers("/department/**","/course/**","/student/").hasAuthority("ADMIN");
+                    .antMatchers("/student/**").hasAuthority("STUDENT")
+                    .antMatchers("/department/**", "/course/**").hasAuthority("ADMIN");
         }
     }
 
-
     @Configuration
     @EnableAuthorizationServer
     protected static class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {

src/main/java/com/school/project/service/course/CourseService.java

 package com.school.project.service.course;
 
-import com.school.project.dto.CourseDTO;
 
-import java.util.List;
+import com.school.project.dto.course.CourseRegisterDTO;
 
 public interface CourseService {
 
-    public String saveCourse(CourseDTO courseDTO);
+    public String saveCourse(CourseRegisterDTO courseDTO);
 
-    public List<CourseDTO> readAllCourse();
-
-    public CourseDTO readCourseById(Long id);
-
-    public CourseDTO updateCourseById(CourseDTO courseDTO, Long id);
-
-    public void deleteCourseById(Long id);
 }

src/main/java/com/school/project/service/course/CourseServiceImp.java

 package com.school.project.service.course;
 
-import com.school.project.dto.CourseDTO;
+import com.school.project.dto.course.CourseRegisterDTO;
 import com.school.project.model.Course;
 import com.school.project.repository.modelRepositery.CourseRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import javax.transaction.Transactional;
-import java.util.List;
-
 @Service
 public class CourseServiceImp implements CourseService {
 
@@ -16,7 +13,7 @@ public class CourseServiceImp implements CourseService {
     public CourseRepository courseRepository;
 
     @Override
-    public String saveCourse(CourseDTO courseDTO) {
+    public String saveCourse(CourseRegisterDTO courseDTO) {
         Course newCourse = new Course();
 
         newCourse.setCourseCode(courseDTO.getCourseCode());
@@ -27,26 +24,6 @@ public class CourseServiceImp implements CourseService {
         return "Course Saved";
     }
 
-    @Override
-    public List<CourseDTO> readAllCourse() {
-        return null;
-    }
-
-    @Override
-    public CourseDTO readCourseById(Long id) {
-        return null;
-    }
-
-    @Override
-    public CourseDTO updateCourseById(CourseDTO courseDTO, Long id) {
-        return null;
-    }
-
-    @Override
-    public void deleteCourseById(Long id) {
-
-    }
-
    /* @Transactional
     @Override
     public List<CourseDTO> readAllCourse() {

src/main/java/com/school/project/service/courseRegistration/CourseRegistrationService.java

+package com.school.project.service.courseRegistration;
+
+import com.school.project.dto.student.StudentCourseRegistrationDTO;
+import org.springframework.stereotype.Service;
+
+import java.util.Set;
+
+@Service
+public interface CourseRegistrationService {
+    public void courseRegistration(Long id, Set<StudentCourseRegistrationDTO> courses);
+}

src/main/java/com/school/project/service/courseRegistration/CourseRegistrationServiceImpl.java

+package com.school.project.service.courseRegistration;
+
+import com.school.project.dto.student.StudentCourseRegistrationDTO;
+import com.school.project.model.Course;
+import com.school.project.model.Student;
+import com.school.project.repository.modelRepositery.CourseRepository;
+import com.school.project.repository.modelRepositery.StudentRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+import java.util.List;
+import java.util.Set;
+
+@Service
+public class CourseRegistrationServiceImpl implements CourseRegistrationService {
+
+    @Autowired
+    private StudentRepository studentRepository;
+
+    @Autowired
+    private CourseRepository courseRepository;
+
+
+    @Override
+    @Transactional
+    @Modifying
+    public void courseRegistration(Long id, Set<StudentCourseRegistrationDTO> courses) {
+        Student student = studentRepository.findByStudentId(id);
+
+        Set<Course> studentCourses = student.getCourseLists();
+
+        courses.forEach(course -> studentCourses.add(courseRepository.findByCourseName(course.getCourseName())));
+
+        student.setCourseLists(studentCourses);
+
+        studentRepository.save(student);
+
+    }
+}

src/main/java/com/school/project/service/department/DepartmentService.java

 package com.school.project.service.department;
 
-import com.school.project.dto.DepartmentDTO;
-
-import java.util.List;
+import com.school.project.dto.department.DepartmentRegisterDTO;
 
 public interface DepartmentService {
-    public String saveDepartment(DepartmentDTO departmentDTO);
-
-    public List<DepartmentDTO> readDepartment();
-
-    public DepartmentDTO readDepartmentById(Long id);
-
-    public DepartmentDTO updateDepartment(DepartmentDTO departmentDTO, Long id);
-
-    public void deleteDepartmentById(Long id);
-
-    public DepartmentDTO findDepartmentByName(String departmentName);
+    public String saveDepartment(DepartmentRegisterDTO departmentDTO);
 
 }

src/main/java/com/school/project/service/department/DepartmentServiceImp.java

 package com.school.project.service.department;
 
-import com.school.project.dto.DepartmentDTO;
+import com.school.project.dto.department.DepartmentRegisterDTO;
 import com.school.project.model.Department;
 import com.school.project.repository.modelRepositery.DepartmentRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.List;
-
 @Service
 public class DepartmentServiceImp implements DepartmentService {
     @Autowired(required = true)
     private DepartmentRepository departmentRepository;
 
     @Override
-    public String saveDepartment(DepartmentDTO department) {
+    public String saveDepartment(DepartmentRegisterDTO department) {
 
         Department newDepartment = new Department();
 
@@ -25,45 +23,20 @@ public class DepartmentServiceImp implements DepartmentService {
         return "Department Saved";
     }
 
-    @Override
-    public List<DepartmentDTO> readDepartment() {
-        return null;
-    }
-
-    @Override
-    public DepartmentDTO readDepartmentById(Long id) {
-        return null;
-    }
-
-    @Override
-    public DepartmentDTO updateDepartment(DepartmentDTO departmentDTO, Long id) {
-        return null;
-    }
-
-    @Override
-    public void deleteDepartmentById(Long id) {
-
-    }
-
-    @Override
-    public DepartmentDTO findDepartmentByName(String departmentName) {
-        return null;
-    }
-
    /* @Override
-    public List<DepartmentDTO> readDepartment() {
+    public List<DepartmentRegisterDTO> readDepartment() {
         return departmentMapper.departmentListModelToDTO(departmentRepository.findAll());
 
     }
 
     @Override
-    public DepartmentDTO readDepartmentById(Long departmentId) {
+    public DepartmentRegisterDTO readDepartmentById(Long departmentId) {
         return departmentMapper.departmentModelToDTO(departmentRepository.findById(departmentId).get());
     }
 
     @Override
-    public DepartmentDTO updateDepartment(DepartmentDTO departmentDTO, Long departmentId) {
-        DepartmentDTO dto = readDepartmentById(departmentId);
+    public DepartmentRegisterDTO updateDepartment(DepartmentRegisterDTO departmentDTO, Long departmentId) {
+        DepartmentRegisterDTO dto = readDepartmentById(departmentId);
 
         dto.setName(departmentDTO.getName());
 
@@ -78,7 +51,7 @@ public class DepartmentServiceImp implements DepartmentService {
     }
 
     @Override
-    public DepartmentDTO findDepartmentByName(String departmentName) {
+    public DepartmentRegisterDTO findDepartmentByName(String departmentName) {
 
         return departmentMapper.departmentModelToDTO(departmentRepository.findByName(departmentName));
     }

src/main/java/com/school/project/service/student/StudentService.java

 package com.school.project.service.student;
 
-import com.school.project.model.Student;
+import com.school.project.dto.student.StudentCoursesDTO;
+import com.school.project.dto.student.StudentViewDataDTO;
 
 public interface StudentService {
 
-    public Student viewData(String username);
-    public Student viewData(Long id);
+    public StudentViewDataDTO viewData(String username);
 
-    public void courseRegistration();
+    public Long getUserId(String username);
+
+    public StudentCoursesDTO viewCourses(Long id);
 }

src/main/java/com/school/project/service/student/StudentServiceImpl.java

 package com.school.project.service.student;
 
-import com.school.project.model.Student;
-import com.school.project.model.Teacher;
-import com.school.project.repository.modelRepositery.TeacherRepository;
+import com.school.project.dto.student.StudentCoursesDTO;
+import com.school.project.dto.student.StudentViewDataDTO;
+import com.school.project.mapper.StudentCoursesMapper;
+import com.school.project.mapper.StudentViewDataMapper;
+import com.school.project.model.userRegistration.User;
+import com.school.project.repository.modelRepositery.StudentRepository;
 import com.school.project.repository.userRegistration.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.Optional;
 
 @Service
-public class StudentServiceImpl implements StudentService{
+public class StudentServiceImpl implements StudentService {
 
     @Autowired
-    private TeacherRepository teacherRepository;
+    private StudentRepository studentRepository;
 
     @Autowired
     private UserRepository userRepository;
 
+    @Autowired
+    private StudentViewDataMapper studentViewDataMapper;
+
+    @Autowired
+    private StudentCoursesMapper studentCoursesMapper;
+
     @Override
-    public Student viewData(String username) {
-        return null;
+    public Long getUserId(String username) {
+        User user = userRepository.findUserByEmail(username).get();
+        return user.getUserId();
     }
 
     @Override
-    public Student viewData(/*String  username*/ Long id) {
+    public StudentViewDataDTO viewData(String username) {
 
-        Teacher teacher = teacherRepository.findOneByTeacherId(id);
+        User user = userRepository.findUserByEmail(username).get();
+        StudentViewDataDTO student = studentViewDataMapper.modelToDto(studentRepository.findByStudentId(user.getUserId()));
 
-        return null;
+        return student;
     }
 
+
     @Override
-    public void courseRegistration() {
+    public StudentCoursesDTO viewCourses(Long id) {
 
+        return studentCoursesMapper.modelToDto(studentRepository.findByStudentId(id));
     }
 }
+
+

src/main/java/com/school/project/service/userRegistration/admin/AdminRegistrationService.java

 package com.school.project.service.userRegistration.admin;
 
 import com.school.project.dto.userRegistration.AdminRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 import org.springframework.stereotype.Service;
 
 @Service
 public interface AdminRegistrationService {
 
-    public UserDTO registerAdmin(AdminRegistrationDTO admin);
+    public UserRegistrationDTO registerAdmin(AdminRegistrationDTO admin);
 }

src/main/java/com/school/project/service/userRegistration/admin/AdminRegistrationServiceImpl.java

 package com.school.project.service.userRegistration.admin;
 
 import com.school.project.dto.userRegistration.AdminRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 import com.school.project.model.userRegistration.Admin;
 import com.school.project.model.userRegistration.Role;
 import com.school.project.model.userRegistration.User;
@@ -27,7 +27,7 @@ public class AdminRegistrationServiceImpl implements AdminRegistrationService {
     @Autowired
     private PasswordEncoder passwordEncoder;
 
-    public UserDTO registerAdmin(AdminRegistrationDTO admin) {
+    public UserRegistrationDTO registerAdmin(AdminRegistrationDTO admin) {
 
         User newUser = new User();
 
@@ -41,7 +41,9 @@ public class AdminRegistrationServiceImpl implements AdminRegistrationService {
         newAdmin.setName(admin.getName());
         newAdmin.setAdminAppUser(newUser);
 
-        return new UserDTO(newUser.getUserId(), newUser.getEmail());
+        adminRegRepository.save(newAdmin);
+
+        return new UserRegistrationDTO(newUser.getUserId(), newUser.getEmail());
 
     }
 

src/main/java/com/school/project/service/userRegistration/student/StudentRegistrationService.java

 package com.school.project.service.userRegistration.student;
 
 import com.school.project.dto.userRegistration.StudentRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 
 public interface StudentRegistrationService {
 
-    public UserDTO registerStudent(StudentRegistrationDTO studentRegistrationDTO);
+    public UserRegistrationDTO registerStudent(StudentRegistrationDTO studentRegistrationDTO);
 }

src/main/java/com/school/project/service/userRegistration/student/StudentRegistrationServiceImpl.java

 package com.school.project.service.userRegistration.student;
 
 import com.school.project.dto.userRegistration.StudentRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 import com.school.project.model.userRegistration.Role;
 import com.school.project.model.Student;
 import com.school.project.model.userRegistration.User;
@@ -31,9 +31,8 @@ public class StudentRegistrationServiceImpl implements StudentRegistrationServic
 
     @Override
     @Transactional
-    public UserDTO registerStudent(StudentRegistrationDTO studentRegistrationDTO) {
+    public UserRegistrationDTO registerStudent(StudentRegistrationDTO studentRegistrationDTO) {
 
-        //Creating New User
         User newUser = new User();
 
         newUser.setEmail(studentRegistrationDTO.getEmail());
@@ -42,7 +41,6 @@ public class StudentRegistrationServiceImpl implements StudentRegistrationServic
 
         newUser = userRepository.save(newUser);
 
-        //Creating New Student
         Student newStudent = new Student();
 
         newStudent.setName(studentRegistrationDTO.getName());
@@ -52,7 +50,7 @@ public class StudentRegistrationServiceImpl implements StudentRegistrationServic
 
         studentRepository.save(newStudent);
 
-        return new UserDTO(newUser.getUserId(), newUser.getEmail());
+        return new UserRegistrationDTO(newUser.getUserId(), newUser.getEmail());
 
     }
 }

src/main/java/com/school/project/service/userRegistration/teacher/TeacherRegistrationService.java

 package com.school.project.service.userRegistration.teacher;
 
 import com.school.project.dto.userRegistration.TeacherRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 
 public interface TeacherRegistrationService {
-    public UserDTO registerTeacher(TeacherRegistrationDTO teacherRegistrationDTO);
+    public UserRegistrationDTO registerTeacher(TeacherRegistrationDTO teacherRegistrationDTO);
 }

src/main/java/com/school/project/service/userRegistration/teacher/TeacherRegistrationServiceImpl.java

 package com.school.project.service.userRegistration.teacher;
 
 import com.school.project.dto.userRegistration.TeacherRegistrationDTO;
-import com.school.project.dto.userRegistration.UserDTO;
+import com.school.project.dto.userRegistration.UserRegistrationDTO;
 import com.school.project.model.userRegistration.Role;
 import com.school.project.model.Teacher;
 import com.school.project.model.userRegistration.User;
@@ -31,7 +31,7 @@ public class TeacherRegistrationServiceImpl implements TeacherRegistrationServic
 
     @Override
     @Transactional
-    public UserDTO registerTeacher(TeacherRegistrationDTO teacherRegistrationDTO) {
+    public UserRegistrationDTO registerTeacher(TeacherRegistrationDTO teacherRegistrationDTO) {
 
         User newUser = new User();
 
@@ -50,7 +50,7 @@ public class TeacherRegistrationServiceImpl implements TeacherRegistrationServic
 
         teacherRepository.save(newTeacher);
 
-        return new UserDTO(newTeacher.getTeacherId(), newUser.getEmail());
+        return new UserRegistrationDTO(newTeacher.getTeacherId(), newUser.getEmail());
 
     }
 }