MapStruct

mapper.java

// mapstruct
annotationProcessor "org.mapstruct:mapstruct-processor:$mapstructVersion"
implementation "org.mapstruct:mapstruct:$mapstructVersion"


[For Java Developers: Forget BeanUtils and Trade for Performance and Code Simplicity by MapStruct | by Malvin Lok | Feb, 2024 | Medium](https://medium.com/@malvin.lok/for-java-developers-forget-beanutils-and-trade-for-performance-and-code-simplicity-by-mapstruct-b8934c830094)

@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class ProductEntity {

    private UUID id;
    private String name;
    private long number;
    private UUID userId;

    private String dateStr;
    private String buyerIdStr;
}

@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class ProductVO {

    private UUID id;
    private String name;
    private long number;
    private UUID ownerId;

    private Date date;
    private UUID buyerId;
}

@Mapper(imports = UUID.class)
public interface ProductMapper {
    ProductMapper INSTANCE = Mappers.getMapper(ProductMapper.class);

    @Mapping(target = "ownerId", source = "userId")
    @Mapping(target = "date", source = "dateStr", dateFormat = "yyyy-MM-dd")
    @Mapping(target = "buyerId", source = "buyerIdStr", defaultExpression = "java( UUID.fromString(productEntity.getBuyerIdStr()) )")
    ProductVO entity2VO(ProductEntity productEntity);
}