Xml 通过MuleSoft Dataweave拆分后如何区分

我已经拆分了我的一个字段，并希望通过每个副本只显示一条记录来区分它。例如，如果有5个id='abc'，那么它将在结果上只显示1个id='abc'

基于下面的示例输出，如何区分它以仅显示1 ABC123而不是2 ABC123

由于我在输出中完全删除了字段FruchtypeCode，我可以知道导致它的原因吗

样本输入

<GetListOfCategoriesDetailResponse xmlns="" xmlns:s="">
    <GetListOfCategoriesDetailResult xmlns:a="" xmlns:i="">
        <a:CategoryDetail>
            <a:Category>ABC123 Kook</a:Category>
            <a:CategoryClass>Apple</a:CategoryClass>
            <a:FruitTypeGrouping/>
        </a:CategoryDetail>
        <a:CategoryDetail>
            <a:Category>ABC123 Loop</a:Category>
            <a:CategoryClass>Apple</a:CategoryClass>
            <a:FruitTypeGrouping/>
        </a:CategoryDetail>
        <a:CategoryDetail>
            <a:Category>BCD344 78JL</a:Category>
            <a:CategoryClass>Apple</a:CategoryClass>
            <a:FruitTypeGrouping/>
        </a:CategoryDetail>
    </GetListOfCategoriesDetailResult>
</GetListOfCategoriesDetailResponse>

---

我已经在mule 3.9.2中尝试了您的脚本，它应该可以工作，但遗憾的是您面临一个问题（它将在3.9.3中出现）。为了解决这个问题，你应该首先做出区分

%output application/xml
     %namespace ns0 a
     %namespace ns01 a
     %namespace ns1 a
     ---
     {
         ns0#FoodProductRS: {
             ns0#FoodProducts: {
                 ns0#FoodProduct: {
                     ns0#FruitTypes: {         
                        (
                            (payload.ns01#GetListOfCategoriesDetailResponse.ns01#GetListOfCategoriesDetailResult.*ns1#CategoryDetail 
                                filter $.ns1#CategoryClass == "Apple" 
                                distinctBy ($.ns1#Category splitBy " ")[0]
                                map ((categoryDetail , indexOfCategoryDetail) -> {
                                     ns0#FruitType @(FruitTypeCode: (categoryDetail.ns1#Category splitBy " ")[0], FruitTypeName: categoryDetail.ns1#CategoryClass , FruitTypeGroup: categoryDetail.ns1#FruitTypeGrouping): {
                                         ns0#Descriptions: {
                                             ns0#Description: {
                                                 ns0#Text: categoryDetail.ns1#LongDescription
                                             }
                                         }

                                     }
                                })
                             ) 
                        )
                     }
                 }

---

您使用的是什么mule版本？

您可以输入一个示例吗。这使得重现问题和提出解决方案变得更容易注意到，伙计，我已经为你提供了更好地审视它的信息。谢谢lot@machaval，示例输入已经提供了3.9.1，难怪我会面临这个奇怪的问题。因此，作为一种标准做法，我应该始终首先区分？不，它应该是相同的，但当检测到此问题时，我会说是，直到3.9.3出来。谢谢，很抱歉给您带来不便

 <ns0:FoodProducts>
     <ns0:FoodProduct>
         <ns0:FruitTypes>
             <ns0:FruitType FruitTypeCode="ABC123" FruitTypeName="Apple" FruitTypeGroup="">
                 <ns0:Descriptions>
                     <ns0:Description>
                         <ns0:Text>This is sweet</ns0:Text>
                     </ns0:Description>
                 </ns0:Descriptions>
             </ns0:FruitType>
             <ns0:FruitType FruitTypeCode="BCD344" FruitTypeName="Apple" FruitTypeGroup="">
                 <ns0:Descriptions>
                     <ns0:Description>
                         <ns0:Text></ns0:Text>
                     </ns0:Description>
                 </ns0:Descriptions>
             </ns0:FruitType>
     </ns0:FoodProduct>
 </ns0:FoodProducts>

%output application/xml
 %namespace ns0 
 %namespace ns01 
 %namespace ns1 
 ---
 {
     ns0#FoodProductRS: {
         ns0#FoodProducts: {
             ns0#FoodProduct: {
                 ns0#FruitTypes: {         
  ((payload.ns01#GetListOfCategoriesDetailResponse.ns01#GetListOfCategoriesDetailResult.*ns1#CategoryDetail filter $.ns1#CategoryClass == "Apple" map ((categoryDetail , indexOfCategoryDetail) -> {
                         ns0#FruitType @(FruitTypeCode: (categoryDetail.ns1#Category splitBy " ")[0], FruitTypeName: categoryDetail.ns1#CategoryClass , FruitTypeGroup: categoryDetail.ns1#FruitTypeGrouping): {
                             ns0#Descriptions: {
                                 ns0#Description: {
                                     ns0#Text: categoryDetail.ns1#LongDescription
                                 }
                             }

                         }
                     })) distinctBy $.ns0#FruitType.@FruitTypeCode)
                 }
             }
         }
     }
 } 

%output application/xml
     %namespace ns0 a
     %namespace ns01 a
     %namespace ns1 a
     ---
     {
         ns0#FoodProductRS: {
             ns0#FoodProducts: {
                 ns0#FoodProduct: {
                     ns0#FruitTypes: {         
                        (
                            (payload.ns01#GetListOfCategoriesDetailResponse.ns01#GetListOfCategoriesDetailResult.*ns1#CategoryDetail 
                                filter $.ns1#CategoryClass == "Apple" 
                                distinctBy ($.ns1#Category splitBy " ")[0]
                                map ((categoryDetail , indexOfCategoryDetail) -> {
                                     ns0#FruitType @(FruitTypeCode: (categoryDetail.ns1#Category splitBy " ")[0], FruitTypeName: categoryDetail.ns1#CategoryClass , FruitTypeGroup: categoryDetail.ns1#FruitTypeGrouping): {
                                         ns0#Descriptions: {
                                             ns0#Description: {
                                                 ns0#Text: categoryDetail.ns1#LongDescription
                                             }
                                         }

                                     }
                                })
                             ) 
                        )
                     }
                 }