JPA

列のデフォルト設定

@Column(columnDefinition = "varchar(255) default 'John Snow'")
private String name;
 
@Column(columnDefinition = "integer default 25")
private Integer age;
 
@Column(columnDefinition = "boolean default false")
private Boolean locked;

@Embedded, @Embeddable

@Embeddable
public class Address {
  private String country;
  private String apartment;
  private String road;
}

@Entity
public class User {
  ...
  
  @Embedded(생략가능)
  private Address address;
}

持続性コンテキスト

クエリ結果

Spring

DTA, DAO, Domain

Domain(=Entity)

DTO(Data Transfer Object)

@Getter
public class UserDto {
    public String userid;
    public String password;

    public SignInReq(String userid, String password) {
        this.userid = userid;
        this.password = password;
    }
}

DAO(Data Access Object)

public interface MemberRepository {
    Member save(Member member);
    Optional<Member> findById(Long id);
    Optional<Member> findByName(String name);
    List<Member> findAll();
}

public class JpaMemberRepository implements MemberRepository{
    ...
    
    @Override
    public Member save(Member member) {
        ...
    }

    @Override
    public Optional<Member> findById(Long id) {
        ...
    }

    @Override
    public Optional<Member> findByName(String name) {
        ...
    }

    @Override
    public List<Member> findAll() {
        ...
    }
    ...
}

Intellij, Java