XPath，基于中的相关节点进行筛选

我已经阅读了所有我能找到的东西，但还没有找到一种方法让它发挥作用。我试图根据节点或其父节点的值查询特定节点的总和。一些节点可能满足具有正确名称的基本要求，但它们的父节点可能不满足，因此我需要忽略这些。在SQL术语中，我将使用EXISTS或LIKE子句来处理这个问题

我想做的是

   SUM    ServiceAmounts 
   FROM   ChargeData elements 
   WHERE  ChargeDescription = 'subTotal-DistrubutionCharges' 
          AND Detail.ServiceType = 'electric' 
          AND NOT 
          (
              ChargeData has a sibling with ChargeDescription = 'Leased Outdoor Lighting' - the entire detail node should be ignored that contains the ChargeData element with 'Leased Outdoor Lighting'. 
          ) 

如果有价值的话，我的XSL版本是1.0

源XML:

    <Source>
      <Detail>
        <ServiceType>electric</ServiceType>
        <Charges>
           <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>19.8</ServiceAmount>
            <ChargeDescription>7% Sales Tax</ChargeDescription>
            <ChargeID>sales_tax</ChargeID>
          </ChargeData>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>282.8</ServiceAmount>
            <ChargeDescription>E-2 Demand</ChargeDescription>
            <ChargeID>usage_charge</ChargeID>
          </ChargeData>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>165.91</ServiceAmount>
            <ChargeDescription>7% Sales Tax</ChargeDescription>
            <ChargeID>sales_tax</ChargeID>
          </ChargeData>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>2370.15</ServiceAmount>
            <ChargeDescription>E-2 Commercial</ChargeDescription>
            <ChargeID>usage_charge</ChargeID>
          </ChargeData>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>2838.66</ServiceAmount>
            <Quantity>0</Quantity>
            <ChargeDescription>subTotal-DistributionCharges</ChargeDescription>
          </ChargeData>
        </Charges>
      </Detail>
      <Detail>
        <ServiceType>electric</ServiceType>
        <Charges>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>2.57</ServiceAmount>
            <ChargeDescription>7% Sales Tax</ChargeDescription>
            <ChargeID>sales_tax</ChargeID>
          </ChargeData>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>36.8</ServiceAmount>
            <ChargeDescription>Leased Outdoor Lighting</ChargeDescription>
            <ChargeID>usage_charge</ChargeID>
          </ChargeData>
          <ChargeData>
            <AllowanceChargeInd>C</AllowanceChargeInd>
            <ServiceAmount>39.37</ServiceAmount>
            <Quantity>0</Quantity>
            <ChargeDescription>subTotal-DistributionCharges</ChargeDescription>
          </ChargeData>
        </Charges>
      </Detail>
    </Source>

或

---

也许这是不可能的。有一件事我不能做，那就是更改模式/数据结构。

我对您的要求有点困惑，您的示例有不匹配的标记（

）

这将选择样本中我认为符合您标准的单个ChargeData元素

Detail
 [ServiceType="electric"]
 [not(Charges/ChargeData/ChargeDescription[.="Leased Outdoor Lighting"])]
 /Charges/ChargeData[ChargeDescription="subTotal-DistributionCharges"]

解释


详细信息


选择详图子图元
[ServiceType=“electric”]


仅选择具有值为“electric”的子ServiceType元素的详图元素
[非（费用/费用数据/费用说明[.=“租赁室外照明”]）]


如果提供了与排除字符串匹配的子代ChargeDescription，则排除细节元素
/Charges/ChargeData[ChargeDescription=“subTotal DistributionCharges”]


在筛选的详细信息元素下，选择ChargeData，其中提供了子ChargeDescription匹配字符串

所以

屈服

2838.6599999999999

谢谢你的回复，马特。我修正了XML，很抱歉那个结束标记。我在XMLSpy中尝试了您的解决方案，但它不喜欢。试图调整它，但无法达到那里，但在VS2010这是一个宾果游戏。总有一天我可能会对这种语法有所了解。非常感谢你！
Detail
 [ServiceType="electric"]
 [not(Charges/ChargeData/ChargeDescription[.="Leased Outdoor Lighting"])]
 /Charges/ChargeData[ChargeDescription="subTotal-DistributionCharges"]

sum(
 Detail
 [ServiceType="electric"]
 [not(Charges/ChargeData/ChargeDescription[.="Leased Outdoor Lighting"])]
 /Charges/ChargeData[ChargeDescription="subTotal-DistributionCharges"]/ServiceAmount
)

2838.6599999999999