인프런 커뮤니티 질문&답변

안녕하세요.

고객 테이블을 상속관계를 이용하여 아래와 같이 설계를 하였습니다.(개인고객, 법인고객)

@Entity
@Getter @Setter
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "CUSTOMER_TYPE")
public abstract class Customer extends BaseEntity {

    @Id @GeneratedValue
    @Column(name = "CUSTOMER_ID")
    private Long id;

    private String name;

    @Embedded
    private Address address;

    private int lineCount;

   @Column(name = "CUSTOMER_TYPE", insertable = false, updatable = false)
    private String customerType;

}

@Entity
@Getter @Setter
@DiscriminatorValue("COMPANY")
public class CompanyCustomer extends Customer{

    private String vatCode;

    private String owner;

    private String companyPhone;

}

@Entity
@Getter @Setter
@DiscriminatorValue("PERSON")
public class PersonalCustomer extends Customer {

    private String jumin;

    private String handPhone;
}

그리고 고객을 위한 DTO도 생성을 했습니다.

@Data
public class CustomerDto {

    @QueryProjection
    public CustomerDto(Long id, String name, int lineCount, Address address, String customerType, String jumin, String handPhone, String vatCode, String owner, String companyPhone) {
        this.id = id;
        this.name = name;
        this.lineCount = lineCount;
        this.address = address;
        this.customerType = customerType;
        this.jumin = jumin;
        this.handPhone = handPhone;
        this.vatCode = vatCode;
        this.owner = owner;
        this.companyPhone = companyPhone;
    }

    private Long id;

    private String name;

    private int lineCount;

    private Address address;

    private String customerType;

    private String jumin;

    private String handPhone;

    private String vatCode;

    private String owner;

    private String companyPhone;

}

위 상태에서 querydsl를 이용해서 DTO에 Data를 넣기 위해서는 querydsl을 어떻게 생성해야 할꺄요?

실제로 sql query는 

    select

        customer0_.customer_id as customer2_2_,

        customer0_.crt_dt as crt_dt3_2_,

        customer0_.updt_dt as updt_dt4_2_,

        customer0_.city as city5_2_,

        customer0_.street as street6_2_,

        customer0_.zipcode as zipcode7_2_,

        customer0_.customer_type as customer1_2_,

        customer0_.line_count as line_cou8_2_,

        customer0_.name as name9_2_,

        customer0_.company_phone as company10_2_,

        customer0_.owner as owner11_2_,

        customer0_.vat_code as vat_cod12_2_,

        customer0_.hand_phone as hand_ph13_2_,

        customer0_.jumin as jumin14_2_ 

    from

        customer customer0_

위와 같이 발생하는 방법으로 알고 싶습니다.

감사합니다.