JPQL语句查询出来的数据如何直接用DTO去接

1.JPQL语句这样写的：

@Repository

public interface IEntitlementRelevantEntitlementViewRepository extends JpaRepository<RelevantEntitlementView, String>

{

    /**

     * 

     * Title: findRelevantEntitlementViewByEntlGuid Description: through entitlement guid getting

     * RelevantEntitlementViews

     * 

     * @param entitlementGuid

     * @return List<RelevantEntitlementView>

     */

    @Query(value = "select  new com.sap.csc.ems.admin.model.dto.entitlement.repository.RelevantEntlViewResponseDto(T.entitlementNo, T.entitlementType, T.sourceDocNo, T.sourceItemNo, T.relevantEntlPKView.relation, T.relevantEntlPKView.relevantEntlGuid)"

        + " from RelevantEntitlementView T  where T.relevantEntlPKView.guid = ?1 and T.relevantEntlPKView.langCode = ?2")

    List<RelevantEntlViewResponseDto> findRelevantEntitlementViewsByEntlGuid(String entitlementGuid, String langCode);

}

2.接收的Dto定义这样的:

public class RelevantEntlViewResponseDto implements Serializable, Comparable<RelevantEntlViewResponseDto>

{

    private static final long serialVersionUID = 2684804377793829074L;

    private Long entitlementNo;

    private String entitlementType;

    private String sourceDocNo;

    private String sourceItemNo;

    private String relation;

    private String guid;

public RelevantEntlViewResponseDto()

    {

        super();

    }

 public RelevantEntlViewResponseDto(Long entitlementNo, String entitlementType, String sourceDocNo, String sourceItemNo, String relation,

        String guid)

    {

        super();

        this.entitlementNo = entitlementNo;

        this.entitlementType = entitlementType;

        this.sourceDocNo = sourceDocNo;

        this.sourceItemNo = sourceItemNo;

        this.relation = relation;

        this.guid = guid;

    }

 @Override

    public int compareTo(RelevantEntlViewResponseDto responseDto)

    {

        //return this.getEntitlementNo().compareTo(responseDto.getEntitlementNo());

        return this.entitlementNo > responseDto.getEntitlementNo() ? 1 : -1;

    }

}

3.RelevantEntitlementView 的定义:

@Entity(name = "")

@Table(name = "")

public class RelevantEntitlementView implements Serializable

{

    private static final long serialVersionUID = -2203166632368793389L;

    @Column(name = HanaDbColumnConstants.ENTITLEMENT_TYPE)

    private String entitlementType;

    @Column(name = HanaDbColumnConstants.RELEVANT_ENTITLEMENT_NO)

    private long entitlementNo;

    @Column(name = HanaDbColumnConstants.RELEVANT_ENTITLEMENT_REF_DOC_NO)

    private String sourceDocNo;

    @Column(name = HanaDbColumnConstants.RELEVANT_ENTITLEMENT_REF_ITEM_NO)

    private String sourceItemNo;

    @EmbeddedId

    private RelevantEntitlementPKView relevantEntlPKView;

}

4.RelevantEntitlementPKView 定义:

@Embeddable

public class RelevantEntitlementPKView implements Serializable

{

    private static final long serialVersionUID = -1335267199925253148L;

    @Column(name = HanaDbColumnConstants.ENTITLEMENT_GUID, nullable = false)

    private String guid;

    @Column(name = HanaDbColumnConstants.RELEVANT_ENTITLEMENT_GUID, nullable = false)

    private String relevantEntlGuid;

    @Column(name = HanaDbColumnConstants.RELATION)

    private String relation;

}

这样就不用在通过view去接收之后再get，set进dto。通过构造函数直接用Dto接收更加方便！