ADD :: 그룹 엔티티 (#63)

- 그룹, 멤버 엔티티 추가
- 그룹, 멤버 레포지토리 추가

src/main/java/com/soogung/simblue/domain/group/domain/Group.java

@@ -0,0 +1,35 @@
+package com.soogung.simblue.domain.group.domain;
+
+import com.soogung.simblue.domain.group.domain.type.GroupType;
+import com.soogung.simblue.global.entity.BaseTimeEntity;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "tbl_group")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class Group extends BaseTimeEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "group_id")
+    private Long id;
+
+    @Column(nullable = false, length = 20)
+    private String name;
+
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false, length = 10)
+    private GroupType type;
+
+    @Builder
+    public Group(String name, GroupType type) {
+        this.name = name;
+        this.type = type;
+    }
+}

src/main/java/com/soogung/simblue/domain/group/domain/Member.java

@@ -0,0 +1,36 @@
+package com.soogung.simblue.domain.group.domain;
+
+import com.soogung.simblue.domain.user.domain.Student;
+import com.soogung.simblue.global.entity.BaseTimeEntity;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "tbl_member")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class Member extends BaseTimeEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "group_id")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "student_id", nullable = false)
+    private Student student;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "group_id", nullable = false)
+    private Group group;
+
+    @Builder
+    public Member(Student student, Group group) {
+        this.student = student;
+        this.group = group;
+    }
+}

src/main/java/com/soogung/simblue/domain/group/domain/repository/GroupRepository.java

@@ -0,0 +1,7 @@
+package com.soogung.simblue.domain.group.domain.repository;
+
+import com.soogung.simblue.domain.group.domain.Group;
+import org.springframework.data.repository.CrudRepository;
+
+public interface GroupRepository extends CrudRepository<Group, Long> {
+}

src/main/java/com/soogung/simblue/domain/group/domain/repository/MemberRepository.java

@@ -0,0 +1,7 @@
+package com.soogung.simblue.domain.group.domain.repository;
+
+import com.soogung.simblue.domain.group.domain.Member;
+import org.springframework.data.repository.CrudRepository;
+
+public interface MemberRepository extends CrudRepository<Member, Long> {
+}

src/main/java/com/soogung/simblue/domain/group/domain/type/GroupType.java

@@ -0,0 +1,6 @@
+package com.soogung.simblue.domain.group.domain.type;
+
+public enum GroupType {
+
+    CLASS, YEAR, MAJOR, ETC
+}