如何在嵌套Mapstruct映射器中的模糊映射方法中指定选择？

Question

在特殊情况下，Mapstruct映射器可以从其依赖项（即ProductionPlanDetailAutoMapper）中选择2种不同的替代方法，但无法这样做，则返回编译错误SupplyPlanProjectionAutoMapper.java Can't map map value "java.util.List<ProductionPlanDetail>" to "java.util.List<ProductionPlanDetailDTO> ". Consider to declare/implement a mapping method: "java.util.List<ProductionPlanDetailDTO> map(java.util.List<ProductionPlanDetail> value)".

源代码由2个映射器组成：概述及其各自的代码：

地图1：

@Mapper(componentModel = "spring", uses={ProductionPlanDetailAutoMapper.class}) 
public interface SupplyPlanProjectionAutoMapper {

    @Mapping(source = "material.id", target = "materialId")
    public PlanningProjectionDTO convert(PlanningProjection);
    
    public Map<PlanningProjectionDTO, List<ProductionPlanDetailDTO>> convertMapProductionPlanDetail (Map<PlanningProjection, List<ProductionPlanDetail>> map);
}

地图2：

@Mapper(componentModel = "spring", uses={RecipeAutoMapper.class})
public interface ProductionPlanDetailAutoMapper {
    
    @Mapping(source = "location.id", target = "locationId")
    @Mapping(source = "receitaProducaoOperacao", target = "productionRecipeOperation")
    @Mapping(source = "dataReferencia", target = "referenceDate")
    @Named(value = "convertWithRecipeDetail")
    public ProductionPlanDetailDTO convertWithRecipeDetail(ProductionPlanDetail);
                
    @Mapping(source = "receitaProducaoOperacao.listaTecnica.materialOutput.id", target = "outputMaterialId")
    @Mapping(source = "receitaProducaoOperacao.listaTecnica.id", target = "billOfMaterialsId")
    @Mapping(source = "receitaProducaoOperacao.receitaProducaoOperacaoCompositeKey.receitaProducao.id", target = "productionRecipeId")
    @Mapping(source = "receitaProducaoOperacao.recursoProdutivo.id", target = "productionResourceId")
    @Mapping(source = "receitaProducaoOperacao.receitaProducaoOperacaoCompositeKey.posicaoOperacao", target = "productionRecipeOperationSequence")
    @Mapping(source = "location.id", target = "locationId")
    @Mapping(source = "dataReferencia", target = "referenceDate")
    @Named(value = "convertWithoutRecipeDetail") 
    public ProductionPlanDetailDTO convertWithoutRecipeDetail(ProductionPlanDetail productionPlanDetail);

    @Named(value = "convertToListWithRecipeDetail") 
    @IterableMapping(qualifiedByName = "convertWithRecipeDetail") 
    public List<ProductionPlanDetailDTO> convertToDTOListWithRecipeDetail (List<ProductionPlanDetail> productionPlanDetailList);
    
    @Named(value = "convertToListWithoutRecipeDetail") 
    @IterableMapping(qualifiedByName = "convertWithoutRecipeDetail") 
    public List<ProductionPlanDetailDTO> convertToDTOListWithoutRecipeDetail (List<ProductionPlanDetail> productionPlanDetailList);
}

第二个映射器内部方法之间的歧义通过@Name和@ IterableMapping＃QualifiedByName的结合来解决

我们通过将以下注释附加到convertMapProductionPlanDetail方法上来尝试了相同的方法，但无济于事：

@IterableMapping(qualifiedByName = "convertToListWithRecipeDetail")

Answer 1

尽管没有在文档中，但是Mapstruct开发人员已经考虑过了。在整理文档时，我发现了这一点：valueQualifiedByName

解决方案是使用MapMapping并指定应使用2种@Name方法中的哪一种来填充地图的“值”部分（List（ProductionPlanDetail）所在的位置）：

@MapMapping(valueQualifiedByName = "convertToDTOListWithRecipeDetail")
public Map<PlanningProjectionDTO, List<ProductionPlanDetailDTO>> convertMapProductionPlanDetail (Map<PlanningProjection, List<ProductionPlanDetail>> map);

可以很优雅地解决问题。另一方面，如果转换问题存在于地图密钥中，则应改用@ MapMapping＃keyQualifiedByName。