Question

I have the following xml document (I have cleared out the irrelevant data):

<?xml version="1.0"?>
<NewOrderNotification xmlns="http://payments.amazon.com/checkout/2008-11-30/">
  <ProcessedOrder>
    <ShippingServiceLevel>blah</ShippingServiceLevel>
    <ProcessedOrderItems>
      <ProcessedOrderItem>
        <AmazonOrderItemCode>blah</AmazonOrderItemCode>
        <Price>
          <Amount>0.2</Amount>
          <CurrencyCode>GBP</CurrencyCode>
        </Price>
        <ItemCharges>
          <Component>
            <Type>Principal</Type>
            <Charge>
              <Amount>0.2</Amount>
              <CurrencyCode>GBP</CurrencyCode>
            </Charge>
          </Component>
          <Component>
            <Type>Shipping</Type>
            <Charge>
              <Amount>0.95</Amount>
              <CurrencyCode>GBP</CurrencyCode>
            </Charge>
          </Component>
          <Component>
            <Type>PrincipalPromo</Type>
            <Charge>
              <Amount>0.0</Amount>
              <CurrencyCode>GBP</CurrencyCode>
            </Charge>
          </Component>
          <Component>
            <Type>ShippingPromo</Type>
            <Charge>
              <Amount>0.0</Amount>
              <CurrencyCode>GBP</CurrencyCode>
            </Charge>
          </Component>
        </ItemCharges>
        <ShippingCustomData>null</ShippingCustomData>
      </ProcessedOrderItem>
    </ProcessedOrderItems>
  </ProcessedOrder>
</NewOrderNotification>

I want to know the xpath syntax for getting each of the values within the 5 different <Amount> elements:

Namely how do I extract each of the following:

• NewOrderNotification – ProcessedOrder – ProcessedOrderItems – ProcessedOrderItem – Price – Amount

• NewOrderNotification – ProcessedOrder – ProcessedOrderItems – ProcessedOrderItem – ItemCharges – Component(with type=Principle) – Charge – Amount

• NewOrderNotification – ProcessedOrder – ProcessedOrderItems – ProcessedOrderItem – ItemCharges – Component(with type=Shipping) – Charge – Amount

• NewOrderNotification – ProcessedOrder – ProcessedOrderItems – ProcessedOrderItem – ItemCharges – Component(with type=PrincipalPromo) – Charge – Amount

• NewOrderNotification – ProcessedOrder – ProcessedOrderItems – ProcessedOrderItem – ItemCharges – Component(with type=ShippingPromo) – Charge – Amount

Please note the xmlns in the root element.

This is the JScript code I’m using to extract elements:

var xmlDoc = Server.CreateObject("Msxml2.DOMDocument.6.0");
xmlDoc.setProperty("SelectionNamespaces", "xmlns:a='http://payments.amazon.com/checkout/2008-11-30/'");
xmlDoc.loadXML(xml);
var node = xmlDoc.documentElement.selectSingleNode("XPATH_IN_HERE");
return node.text;

Answer 1

The first amount you can get with just:

//Price/Amount/text()
#=> "0.2"

For the other four, you can use the text of the preceding sibling Type element to get their values:

//Charge[preceding-sibling::Type="Principal"]/Amount/text()
#=> "0.2"

//Charge[preceding-sibling::Type="Shipping"]/Amount/text()
#=> "0.95"

//Charge[preceding-sibling::Type="PrincipalPromo"]/Amount/text()
#=> "0.0"

//Charge[preceding-sibling::Type="ShippingPromo"]/Amount/text()
#=> "0.0"

I think that does it. (Let me know if I misunderstood your question.)