Mapstruct - update existing bean and ignore a field

Question

I am updating a bean according to documentation:

@Mapper
public interface CarMapper {
    void updateCarFromDto(CarDto carDto, @MappingTarget Car car);
}

Is it possible to tell mapstruct to ignore a certain field(s) ? F.e. I don't want mapstruct to map id field from carDto to car entity, and that is what mapstruct will do if I don't define the body and skip id field mapping manually.

If it's not currently possible, is there any workaround (different than own impl.) ?

Answer 1

Use @Mapping( target = "id", ignore = true ).