基于类型的MapStruct映射器

Question

Component {
   UUID id;
   String name;
}

MotherboardComponent extends Component {
    String type;
    List<Component> components;
}

谢谢

Answer 1

MapStruct在运行时不执行任何操作。它在编译时就会知道类型。

为了解决这个问题，您必须帮助它一点：

例如。

@Mapper
public abstract class MotherboardComponentMapper {

    public abstract MotherboardComponentDO map(MotherboardComponent component);

    public ComponentDO map(Component component) {
        if (component instanceof MotherboardComponent) {
            return map((MotherboardComponent) component);
        }

        return mapAsComponentDO(component);
    }

    @Named("asComponentDO")
    protected abstract ComponentDO mapAsComponentDO(Component component);

}