Найти индекс XML атрибуты с помощью мула dataweave

Question

У меня есть требование в качестве индекса печати атрибута XML

<Item> 
    <HeaderCharges> 
     <HeaderCharge ChargeCategory="ShippingCharge" ChargeName="ShippingCharge1" ChargeAmount="10.0" Reference="Free delivery"> 
     <Extn BaseChargeAmount="10.0" DeliveryCode="" DeliverySequenceNo="1" ConsignmentNo="0000164182" ItemID="1452778282"/> 
    </HeaderCharge> 
    <HeaderCharge ChargeCategory="ShippingDiscount" ChargeName="ShippingDiscount1" ChargeAmount="6.0" Reference="Discount"> 
     <Extn BaseChargeAmount="6.0" DeliveryCode="" DeliverySequenceNo="1" ConsignmentNo="0000164182" ItemID="1452778282" 
     POSDepartmentID="1097" PromotionID="100819" Description="" ReasonClass="PROMOVCH" ReasonCode="1230" ReasonDescription="50%off" /> 
    </HeaderCharge> 
    <HeaderCharge ChargeCategory="ShippingDiscount" ChargeName="ShippingDiscount2" ChargeAmount="4.0" Reference="Discount 2"> 
     <Extn BaseChargeAmount="4.0" DeliveryCode="" DeliverySequenceNo="1" ConsignmentNo="0000164182" ItemID="1452778282" 
     POSDepartmentID="1097" PromotionID="100819" ReasonClass="PROMOVCH" ReasonCode="1230" ReasonDescription="50%off" /> 
    </HeaderCharge> 
    <HeaderCharge ChargeCategory="ShippingCharge" ChargeName="ShippingCharge1" ChargeAmount="10.0" Reference="Free delivery"> 
     <Extn BaseChargeAmount="10.0" DeliveryCode="" DeliverySequenceNo="2" ConsignmentNo="0000164182" ItemID="1452778282"/> 
    </HeaderCharge> 
     </HeaderCharges> 
</Item> 

когда ChargeCategory="ShippingCharge" то индекс должен быть равен 1, для следующего индекса итерации должна быть 2. Нужно найти индекс для ChargeCategory="ShippingCharge" ,

Я попытался с $$, но его поддерживает только для XML-узлов, а не для атрибутов

код - `

%dw 1.0 
%input payload application/xml 
%output application/xml 

%var counter=sizeOf payload.Order.OrderLines.*OrderLine 
%var counter1=sizeOf payload.Order.HeaderCharges.*HeaderCharge 

%var head=sizeOf payload.Order.HeaderCharges.*HeaderCharge.@ChargeCategory == "ShippingCharge" distinctBy $.@ChargeCategory 
--- 
using (w=payload.Order.OrderLines.*OrderLine default [], a=payload.Order.PaymentMethods.*PaymentMethod default [],h=payload.Order.HeaderCharges.*HeaderCharge default [], z=payload.Order.HeaderCharges.*HeaderCharge filter $.ChargeCategory == "ShippingCharge" default []) 



Transaction @(CancelFlag:"false"):{((payload.*Order default []) map { 

     RetailTransaction: { 

((h default []) map ({ // HeaderCharge Level 
    LineItem @(EntryMethod:"Keyed"):{ 

      SequenceNumber:counter + $$ + 1,  
      BeginDateTime:payload.Order.@OrderDate[0..18], 
      EndDateTime:payload.Order.PosLogDataList.PosLogData.@EndDateTime[0..18], 

      CustomerOrderForDelivery @(OrderStatus:"Sale"):{ 
       Quantity:"1", 
       Associate:{ 
         AssociateID:payload.Order.PosLogDataList.PosLogData.@AssociateID 
        }, 


       (($ default []) groupBy $.@DeliverySequenceNo map ({ 
       RetailPriceModifier @(MethodCode:"AutomaticPromotion",VoidFlag:"false"):{ 
        SequenceNumber1: $$, 
        Amount @(Action:"Subtract"):$.Extn.@BaseChargePerUnit, 
        PreviousPrice:$.Extn.@BaseUnitPrice when $$ == 0 otherwise $.Extn.@BaseUnitPrice - [$$ - 1 ].Extn.@BaseChargePerUnit, 
        NewPrice:"" 

       } 
       }) when $.@ChargeCategory == "ShippingCharge" otherwise {}) 
       } 

      } 

      } 

      ) when $.HeaderCharges != '' otherwise {}) 

      } 

      } 

      ) 

      } 

` Здесь SequenceNumber1 должны прийти как 1,2, как указано выше упомянутого HeaderChargers условия

ввод пробы -

<?xml version="1.0" encoding="UTF-8"?> 
<Order AuthorizationExpirationDate="2016-06-22T14:43:05+00:00" 
    BillToID="8801533001732" CarrierAccountNo=" " CarrierServiceCode=" " 
    ChargeActualFreightFlag="N" Createts="2016-06-22T14:43:05+00:00" 
     TermsCode=" " TotalAdjustmentAmount="0.00" evaluate="yes" isHistory="N"> 
     <Extn BaseOrderTotal="385.00" BaseOriginalOrderTotal="385.00" 
     CustomerID="63873" InstoreID="147258" IsFraudCancelled="N" 
     IsMarketingPref="N" OrderTotal="385.00" 
     OriginalTotalAmount="385.00" TerminalID="704292"/> 
    <OrderLines> 
     <OrderLine AllocationDate="2016-06-24T00:00:00+00:00" 
      CarrierAccountNo=" " CarrierServiceCode="NDD_COU" 
      CustomerLinePONo=" " CustomerPONo=" " DeliveryCode=" " 
      DepartmentCode=" " FreightTerms=" " HoldFlag="N" 
      HoldReasonCode=" " ImportLicenseNo=" " InvoicedQty="0.00" 
      ScacAndServiceKey="" ShipNode="1097" ShipTogetherNo=" " 
      SplitQty="0.00" Status="Created" StatusQuantity="30.00" 
      SubLineNo="1" isHistory="N"> 
      <OrderStatuses> 
       <OrderStatus OrderHeaderKey="2016062214430220261511" 
        OrderLineKey="2016062214430420261512" 
        OrderLineScheduleKey="201606221437430520261529" 
        OrderReleaseStatusKey="201606221477430520261530" 
        PipelineKey="20160222070748372596" Status="1100" 
        StatusDate="2016-06-22T14:43:04+00:00" 
        StatusDescription="Created" StatusQty="30.00" TotalQuantity="30.00"/> 
      </OrderStatuses> 
      <OrderDates> 
       <OrderDate ActualDate="2016-06-24T00:00:00+00:00" 
        CommittedDate="2016-06-24T00:00:00+00:00" 
        DateTypeId="YCD_FIRST_PROMISED_DATE" 
        OrderHeaderKey="2016062214430220261511" 
        OrderLineKey="2016062214430420261512" OrderReleaseKey=" "/> 
      </OrderDates> 
      <Instructions NumberOfInstructions="0"/> 
      <Item AliasName="" AliasValue="" CostCurrency=" " 
       CountryOfOrigin=" " CustomerItem=" " 
       CustomerItemDesc=" " ECCNNo=" " 
       HarmonizedCode="6203423100" ISBN=" " 
       ItemDesc="product &quot;101351803&quot; with name &quot;501 Stonewash Straight Jeans&quot;" 
       ItemID="101351803" 
       ItemShortDesc=" &quot;501 Stonewash Straight Jeans&quot;" 
       ItemWeight="0.70" ItemWeightUOM="KG" 
       ManufacturerItem=" " ManufacturerItemDesc=" " 
       ManufacturerName="Levi's" NMFCClass=" " NMFCCode=" " 
       NMFCDescription=" " ProductClass="Good" ProductLine=" " 
       ScheduleBCode=" " SupplierItem=" " SupplierItemDesc=" " 
       TaxProductCode="default" UPCCode=" " UnitCost="0.00" UnitOfMeasure="EACH"/> 
      <ItemDetails CanUseAsServiceTool="N" GlobalItemID="" 
       IsItemSuperseded="N" ItemGroupCode="PROD" 
       ItemID="101351803" ItemKey="20160406111557582111" 
       OrganizationCode="HOF" UnitOfMeasure="EACH"> 
       <ItemAliasList> 
        <ItemAlias AliasName="EAN" AliasValue="5412456008434"/> 
       </ItemAliasList> 
      </ItemDetails> 
      <Extn AgeRestricted="N" BaseLineTotal="600.00" 
       BaseListPrice="12.00" BaseUnitPrice="20.00" 
       ConsignmentNo="0000217069-1" DeliverySequenceNo="1" 
       HybrisLineNo="1" LineTotal="600.00" POSDepartmentID="0049"/> 
      <LinePriceInfo DiscountPercentage="0.00" IsPriceLocked="N" 
       LineTotal="360.00" ListPrice="12.00" RetailPrice="0.00" 
       TaxableFlag="N" UnitPrice="20.00"/> 
      <PersonInfoShipTo AddressID="8802157101079" 
       AddressLine1="HighSroad1" AddressLine2="Nattf" 
       AddressLine3="" AddressLine4="" AddressLine5="" 
       AddressLine6="" AlternateEmailID="" Beeper="" 
       City="Trava1234" Company="" Country="UK" DayFaxNo="" 
       DayPhone="" Department="" EMailID="" EveningFaxNo="" 
       EveningPhone="" FirstName="Ferand" JobTitle="" 
       LastName="abcd" MiddleName="" MobilePhone="9876551111" 
       OtherPhone="" PersonID="" 
       PersonInfoKey="2016062214430520261527" State="" 
       Suffix="" Title="Mr" ZipCode="2000"/> 
      <LineCharges> 
       <LineCharge ChargeAmount="240.00" 
        ChargeCategory="SystemPromotion" 
        ChargeName="12% on purchase over paypal" 
        ChargeNameKey="" ChargePerLine="0.00" 
        ChargePerUnit="8.00" InvoicedChargeAmount="0.00" 
        InvoicedChargePerLine="0.00" 
        InvoicedChargePerUnit="0.00" IsBillable="Y" 
        IsDiscount="Y" 
        Reference="percentage off on purchase over paypal" 
        RemainingChargeAmount="240.00" 
        RemainingChargePerLine="0.00" RemainingChargePerUnit="8.00"> 
        <Extn BaseChargeAmount="240.00" 
         BaseChargePerLine="0.00" 
         BaseChargePerUnit="8.00" 
         PromotionID="0000100253" 
         ReasonClass="12% on purchase over debit card" 
         ReasonCode="12% on purchase over debit card" ReasonDescription="percentage off on purchase over paypal"/> 
       </LineCharge> 
      </LineCharges> 
     </OrderLine> 
    </OrderLines> 
    <HeaderCharges> 
    <HeaderCharge ChargeCategory="ShippingCharge" ChargeName="ShippingCharge1" ChargeAmount="10.0" Reference="Free delivery"> 
    <Extn BaseChargeAmount="10.0" DeliveryCode="" DeliverySequenceNo="1" ConsignmentNo="0000164182" ItemID="1452778282"/> 
</HeaderCharge> 
<HeaderCharge ChargeCategory="ShippingDiscount" ChargeName="ShippingDiscount1" ChargeAmount="6.0" Reference="Discount"> 
    <Extn BaseChargeAmount="6.0" DeliveryCode="" DeliverySequenceNo="1" ConsignmentNo="0000164182" ItemID="1452778282" 
    POSDepartmentID="1097" PromotionID="100819" Description="" ReasonClass="PROMOVCH" ReasonCode="1230" ReasonDescription="50%off" /> 
</HeaderCharge> 
<HeaderCharge ChargeCategory="ShippingDiscount" ChargeName="ShippingDiscount2" ChargeAmount="4.0" Reference="Discount 2"> 
    <Extn BaseChargeAmount="4.0" DeliveryCode="" DeliverySequenceNo="1" ConsignmentNo="0000164182" ItemID="1452778282" 
    POSDepartmentID="1097" PromotionID="100819" ReasonClass="PROMOVCH" ReasonCode="1230" ReasonDescription="50%off" /> 
</HeaderCharge> 
<HeaderCharge ChargeCategory="ShippingCharge" ChargeName="ShippingCharge1" ChargeAmount="10.0" Reference="Free delivery"> 
    <Extn BaseChargeAmount="10.0" DeliveryCode="" DeliverySequenceNo="2" ConsignmentNo="0000164182" ItemID="1452778282"/> 
</HeaderCharge> 
    </HeaderCharges> 
</Order> 

Answer 1

Я не уверен, что из но я мог бы подумать об альтернативе. Вместо того, чтобы перебирать все элементы HeaderCharge только через них, которые удовлетворяют вашему условию и снова проходят через них, которые не удовлетворяют. Таким образом, когда вы делаете $$ вы можете получить отдельный порядковый номер для объектов with'ShippingCharge»

например:

 ((h[?($.@ChargeCategory != "ShippingCharge")] default []) map ({ 
      //ur code here when not equals to shipping charges 
     } 

     ) when $.HeaderCharges != '' otherwise {}), 
    ((h[?($.@ChargeCategory == "ShippingCharge")] default []) map ({ 
      //ur code here when equals to shipping charges 
     } 

     ) when $.HeaderCharges != '' otherwise {})