Mapstruct映射器扩展

Question

Hi这似乎适用于添加额外的方法，但不适用于在现有方法上添加新的注释。假设我们有以下课程：

public class SourceClass {
    private String field_1;
    private String field_2;
}

public class TargetParent {
    private String field_a;
}

public class TargetChild extends TargetParent {
    private String field_b;
}

@Mapper
public interface ParentMapper {
    @Mapping(source="field_1", target="field_a")
    public TargetParent convert(SourceClass source);
}

@Mapper
public interface ChildMapper extends ParentMapper {
    @Mapping(source="field_2", target="field_b")
    public TargetChild convert(SourceClass source);
}

public TargetChild convert(SourceClass source){
    // target instanciation through factory here
    target.setField_a(field_1);
    target.setField_b(field_2);
}

Answer 1

如果您想要继承某些注释，您应该使用映射、配置、继承。

例如。

@Mapper
public interface ParentMapper {
    @Mapping(source="field_1", target="field_a")
    public TargetParent convert(SourceClass source);
}

@Mapper(config = ParentMapper.class)
public interface ChildMapper {
    @Mapping(source="field_2", target="field_b")
    @InheritConfiguration
    public TargetChild convert(SourceClass source);
}