[Bank Application] 1-4. 테이블 별 엔티티 생성

domain 하위에 account, user, transaction 폴더를 만들고

각각의 엔티티를 생성해 주었다.

1. USER
   @NoArgsConstructor //스프링이 User 객체생성할때 빈 생성자로 new 하기 때문
   @EntityListeners(AuditingEntityListener.class)
   @Table(name = "user_tb")
   @Entity
   public class User {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
   private Long id;
   @Column(unique = true, nullable = false, length = 20)
   private String username;
   @Column(nullable = false, length = 60) //패스워드 인코딩(Bcrypt)
   private String password;
   @Column(nullable = false, length = 20)
   private String email;
   @Column(nullable = false, length = 20)
   private String fullname;
   @Enumerated(EnumType.STRING)
   @Column(nullable = false)
   private UserEnum role; //ADMIN, CUSTOMER
   @CreatedDate
   @Column(nullable = false)
   private LocalDateTime createdAt;
   @LastModifiedDate
   @Column(nullable = false)
   private LocalDateTime updatedAt;

    this.id = id;
    this.username = username;
    this.password = password;
    this.email = email;
    this.fullname = fullname;
    this.role = role;
    this.createdAt = createdAt;
    this.updatedAt = updatedAt;

   }
   }
2. @Builder
   public User(Long id, String username, String password, String email, String fullname, UserEnum role, LocalDateTime createdAt, LocalDateTime updatedAt) {
3. ENUMCLASS 생성
   @Column(nullable = false)
   private UserEnum role; //ADMIN, CUSTOMER

@Getter
@AllArgsConstructor
public enum UserEnum {
ADMIN("관리자"), CUSTOMER("고객");

private String value;

}

2. Account 생성
   @NoArgsConstructor
   @EntityListeners(AuditingEntityListener.class)
   @Table(name = "account_tb")
   @Entity
   public class Account {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
   private Long id;
   @Column(unique = true, nullable = false, length = 4)
   private Long number;
   @Column(nullable = false, length = 4)
   private Long password;
   @Column(nullable = false)
   private Long balance;@CreatedDate
   @Column(nullable = false)
   private LocalDateTime createdAt;
   @LastModifiedDate
   @Column(nullable = false)
   private LocalDateTime updatedAt;

    this.id = id;
    this.number = number;
    this.password = password;
    this.balance = balance;
    this.user = user;
    this.createdAt = createdAt;
    this.updatedAt = updatedAt;

   }
   }
3. @Builder
   public Account(Long id, Long number, Long password, Long balance, User user, LocalDateTime createdAt, LocalDateTime updatedAt) {
4. @ManyToOne(fetch = FetchType.LAZY) //account.getUser().아무필드() === 호출됨
   private User user;

3. Transaction 생성
   @NoArgsConstructor
   @EntityListeners(AuditingEntityListener.class)
   @Table(name = "transactioin_tb")
   @Entity
   public class Transaction {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
   private Long id;@JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
   @ManyToOne(fetch = FetchType.LAZY)
   private Account depositAccount;@Enumerated(EnumType.STRING)
   @Column(nullable = false)
   private TransactionEnum gubun; //WITHDRAW, DEPOSIT, TRANSFER, ALL@CreatedDate
   @Column(nullable = false)
   private LocalDateTime createdAt;
   @LastModifiedDate
   @Column(nullable = false)
   private LocalDateTime updatedAt;

    this.id = id;
    this.withdrawAccount = withdrawAccount;
    this.depositAccount = depositAccount;
    this.amount = amount;
    this.withdrawAccountBalance = withdrawAccountBalance;
    this.depositAccountBalance = depositAccountBalance;
    this.gubun = gubun;
    this.sender = sender;
    this.receiver = receiver;
    this.tel = tel;
    this.createdAt = createdAt;
    this.updatedAt = updatedAt;

   }
   }
4. public Transaction(Long id, Account withdrawAccount, Account depositAccount, Long amount, Long withdrawAccountBalance, Long depositAccountBalance, TransactionEnum gubun, String sender, String receiver, String tel, LocalDateTime createdAt, LocalDateTime updatedAt) {
5. //계좌가 사라져도 로그는 남아야 함
   private String sender;
   private String receiver;
   private String tel;
6. private Long amount;
   private Long withdrawAccountBalance;
   private Long depositAccountBalance;
7. @JoinColumn(foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
   @ManyToOne(fetch = FetchType.LAZY)
   private Account withdrawAccount;

여기에도 있는 ENUM
@AllArgsConstructor
@Getter
public enum TransactionEnum {
WITHDRAW("출금"), DEPOSIT("입금"), TRANSFER("이체"), ALL("입출금내역");

private String value;

}