refactor: #70 악기, 연습실, 공연장 entity에서 판매자(seller)를 nullable한 데이터로 설정

src/main/java/com/ajou/hertz/domain/concert_hall/entity/ConcertHall.java

@@ -33,7 +33,7 @@ public class ConcertHall extends TimeTrackedBaseEntity {
 	@Column(name = "concert_hall_id", nullable = false)
 	private Long id;
 
-	@JoinColumn(name = "seller_id", nullable = false)
+	@JoinColumn(name = "seller_id")
 	@ManyToOne(fetch = FetchType.LAZY)
 	private User seller;
 

src/main/java/com/ajou/hertz/domain/instrument/entity/Instrument.java

@@ -38,7 +38,7 @@ public abstract class Instrument extends TimeTrackedBaseEntity {
 	@Column(name = "instrument_id", nullable = false)
 	private Long id;
 
-	@JoinColumn(name = "seller_id", nullable = false)
+	@JoinColumn(name = "seller_id")
 	@ManyToOne(fetch = FetchType.LAZY)
 	private User seller;
 

src/main/java/com/ajou/hertz/domain/practice_room/entity/PracticeRoom.java

@@ -28,37 +28,52 @@ public class PracticeRoom extends TimeTrackedBaseEntity {
 
 	@Embedded
 	private final PracticeRoomImages images = new PracticeRoomImages();
+
 	@Embedded
 	private final PracticeRoomHashtags hashtags = new PracticeRoomHashtags();
+
 	@Id
 	@GeneratedValue(strategy = GenerationType.IDENTITY)
 	@Column(name = "practice_room_id", nullable = false)
 	private Long id;
-	@JoinColumn(name = "seller_id", nullable = false)
+
+	@JoinColumn(name = "seller_id")
 	@ManyToOne(fetch = FetchType.LAZY)
 	private User seller;
+
 	@Column(nullable = false)
 	private String title;
+
 	@Embedded
 	private FullAddress tradeAddress;
+
 	@Column(nullable = false)
 	private Boolean hasSoundEquipment;
+
 	@Column(nullable = false)
 	private Boolean hasInstrument;
+
 	@Column(nullable = false)
 	private Integer pricePerDay;
+
 	@Column(nullable = false)
 	private Integer pricePerHour;
+
 	@Column(nullable = false)
 	private Integer pricePerMonth;
+
 	@Column(nullable = false)
 	private Short capacity;
+
 	@Column(nullable = false)
 	private String size;
+
 	@Column(nullable = false)
 	private Boolean hasParkingLot;
+
 	@Embedded
 	private PracticeRoomDescription description;
+
 	@Embedded
 	private Coordinate coordinate;