add mappers

src/main/java/mate/academy/mapstruct/controller/GroupController.java

@@ -15,7 +15,6 @@
 @RestController
 @RequestMapping(value = "/groups")
 public class GroupController {
-
     private final GroupService groupService;
 
     @GetMapping

src/main/java/mate/academy/mapstruct/controller/StudentController.java

@@ -17,7 +17,6 @@
 @RestController
 @RequestMapping(value = "/students")
 public class StudentController {
-
     private final StudentService studentService;
 
     @GetMapping

src/main/java/mate/academy/mapstruct/controller/SubjectController.java

@@ -15,7 +15,6 @@
 @RestController
 @RequestMapping(value = "/subjects")
 public class SubjectController {
-
     private final SubjectService subjectService;
 
     @GetMapping

src/main/java/mate/academy/mapstruct/mapper/GroupMapper.java

@@ -3,7 +3,9 @@
 import mate.academy.mapstruct.dto.group.CreateGroupRequestDto;
 import mate.academy.mapstruct.dto.group.GroupDto;
 import mate.academy.mapstruct.model.Group;
+import org.mapstruct.Mapper;
 
+@Mapper(componentModel = "spring")
 public interface GroupMapper {
     GroupDto toDto(Group group);
 

src/main/java/mate/academy/mapstruct/mapper/StudentMapper.java

@@ -1,14 +1,52 @@
 package mate.academy.mapstruct.mapper;
 
+import java.util.List;
+import java.util.stream.Collectors;
 import mate.academy.mapstruct.dto.student.CreateStudentRequestDto;
 import mate.academy.mapstruct.dto.student.StudentDto;
 import mate.academy.mapstruct.dto.student.StudentWithoutSubjectsDto;
+import mate.academy.mapstruct.model.Group;
 import mate.academy.mapstruct.model.Student;
+import mate.academy.mapstruct.model.Subject;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
 
+@Mapper(componentModel = "spring")
 public interface StudentMapper {
+    @Mapping(target = "groupId", source = "group.id")
+    @Mapping(target = "subjectIds", source = "subjects")
     StudentDto toDto(Student student);
 
+    @Mapping(target = "groupId", source = "group.id")
     StudentWithoutSubjectsDto toStudentWithoutSubjectsDto(Student student);
 
+    @Mapping(target = "id", ignore = true)
+    @Mapping(target = "group", source = "groupId")
+    @Mapping(target = "subjects", source = "subjects")
+    @Mapping(target = "socialSecurityNumber", ignore = true)
     Student toModel(CreateStudentRequestDto requestDto);
+
+    default Long map(Group group) {
+        return group == null ? null : group.getId();
+    }
+
+    default Group map(Long groupId) {
+        return groupId == null ? null : new Group(groupId);
+    }
+
+    default List<Subject> map(List<Long> subjectIds) {
+        return subjectIds == null
+                ? null
+                : subjectIds.stream()
+                .map(Subject::new)
+                .collect(Collectors.toList());
+    }
+
+    default List<Long> mapSubjectsToIds(List<Subject> subjects) {
+        return subjects == null
+                ? null
+                : subjects.stream()
+                .map(Subject::getId)
+                .collect(Collectors.toList());
+    }
 }

src/main/java/mate/academy/mapstruct/mapper/SubjectMapper.java

@@ -3,8 +3,11 @@
 import mate.academy.mapstruct.dto.subject.CreateSubjectRequestDto;
 import mate.academy.mapstruct.dto.subject.SubjectDto;
 import mate.academy.mapstruct.model.Subject;
+import org.mapstruct.Mapper;
 
+@Mapper(componentModel = "spring")
 public interface SubjectMapper {
+
     SubjectDto toDto(Subject subject);
 
     Subject toModel(CreateSubjectRequestDto requestDto);

src/main/java/mate/academy/mapstruct/model/Group.java

@@ -21,4 +21,20 @@ public class Group {
     public Group(Long id) {
         this.id = id;
     }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
 }

src/main/java/mate/academy/mapstruct/model/Student.java

@@ -46,4 +46,52 @@ public class Student {
             inverseJoinColumns = @JoinColumn(name = "subject_id")
     )
     private List<Subject> subjects;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getSocialSecurityNumber() {
+        return socialSecurityNumber;
+    }
+
+    public void setSocialSecurityNumber(String socialSecurityNumber) {
+        this.socialSecurityNumber = socialSecurityNumber;
+    }
+
+    public Group getGroup() {
+        return group;
+    }
+
+    public void setGroup(Group group) {
+        this.group = group;
+    }
+
+    public List<Subject> getSubjects() {
+        return subjects;
+    }
+
+    public void setSubjects(List<Subject> subjects) {
+        this.subjects = subjects;
+    }
 }

src/main/java/mate/academy/mapstruct/model/Subject.java

@@ -21,4 +21,20 @@ public class Subject {
     public Subject(Long id) {
         this.id = id;
     }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
 }