是否可以对 ModelMapper（在 spring 引导中）使用一个 propertyMap 到 map 在两个方向（DTO 到实体和实体到 DTO）？

Question

Good Morning, i used Model Mapper in spring boot to convert my Entity to a DTO ( i configured Model Mapper buy setting the correct property Map) but i couldn't use the same property Map to convert the same DTO to the Entity.

I think that one Property Map can be enough to do the mapping in both directions: my Map:

public class UserPropertyMap extends PropertyMap<UserEntity, UserDTO> {
    @Override
    protected void configure() {
        map().setId_user(source.getId());
        map().setName(source.getName());
        map().setId_profile(source.getProfile().getId());
    }
}

thanks in advance

Answer 1

With the current ModelMapper Version 2.4.2 it is not possible I'm afraid.

The reason is It's hard to define how ModelMapper should map destination to source if it only know how to map source to destination.

For example, if we had a converter toUpperCase using to map entity.firstName to dto.firstName like this using(toUpperCase).map(entity.firstName, dto.firstName) .
How can we reverse-map this?

There is a related github issue . Check that out!