chore: entity 추가

src/main/java/com/study/course_registration/entity/Lesson.java

@@ -6,6 +6,8 @@ import lombok.NoArgsConstructor;
 
 import java.time.Instant;
 
+import com.study.course_registration.enums.UserRole;
+
 @Entity 
 @NoArgsConstructor 
 @Getter 
@@ -23,11 +25,29 @@ public class Lesson extends BaseTimeZoneEntity {
 
     private Instant endTime;
 
-    public Lesson(String name, Subject subject, Professor professor, Instant startTime, Instant endTime) {
+    @ManyToOne(fetch = FetchType.LAZY)
+    @Column (name = "semester_id", nullable = false)
+    private Semester semester;
+
+    @Column (name = "capacity", nullable = false)
+    private Integer capacity;
+
+    @Column (name = "min_grade", nullable = false)
+    private Long minGrade;
+
+    @Column (name = "allowed_role", nullable = false)
+    private UserRole allowedRole;
+
+    public Lesson(String name, Subject subject, Professor professor, Instant startTime, Instant endTime, Semester semester, Integer capacity, Long minGrade, UserRole allowedRole) {
         this.name = name;
         this.subject = subject;
         this.professor = professor;
         this.startTime = startTime;
         this.endTime = endTime;
+        this.semester = semester;
+        this.capacity = capacity;
+        this.minGrade = minGrade;
+        this.allowedRole = allowedRole;
+
     }
 }

src/main/java/com/study/course_registration/entity/LessonSchedule.java

@@ -0,0 +1,27 @@
+package com.study.course_registration.entity;
+
+import java.time.DayOfWeek;
+import java.time.LocalTime;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.ManyToOne;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity 
+@Getter
+@NoArgsConstructor 
+public class LessonSchedule extends BaseTimeZoneEntity {
+    @ManyToOne(fetch = FetchType.LAZY)
+    @Column()
+    private Lesson lesson;
+
+    @Column()
+    private DayOfWeek dayOfWeek;
+
+    private LocalTime startTime;
+
+    private LocalTime endTime;
+}

src/main/java/com/study/course_registration/entity/Semester.java

@@ -0,0 +1,29 @@
+package com.study.course_registration.entity;
+
+import java.time.Instant;
+import java.time.LocalDate;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity 
+@NoArgsConstructor 
+@Getter 
+public class Semester extends BaseTimeZoneEntity {
+    private String name;
+
+    private LocalDate startDate;
+
+    private LocalDate endDate;
+
+    private Instant registrationStartAt;
+
+    private Instant registrationEndAt;
+
+    private Integer maxCredits;
+
+    public Semester(String name) {
+        this.name = name;
+    }
+}