MapStruct @MappingTarget Anotasyonu

Giriş

Açıklaması şöyle. Bu durumda metodun return tipi void olur

In some cases you need mappings which don’t create a new instance of the target type but instead update an existing instance of that type. This sort of mapping can be realized by adding a parameter for the target object and marking this parameter with @MappingTarget. 

Örnek

Şöyle yaparız

@Mapper
public interface CustomerMapper {
  void updateFromCustomer(Customer customer, @MappingTarget CustomerDto dto);
}