Office 2003 XML

A More Advanced Example

Our final example triplet of source document, stylesheet, and result document involves converting an XML format into another XML format, rather than HTML. Example B-7 shows a simple XML document containing order information.

Example B-7. An XML document containing orders

<orders>
  <order>
    <item>Widget</item>
    <price>50</price>
    <quantity>3</quantity>
  </order>
  <order>
    <item>Thingamajig</item>
    <price>25</price>
    <quantity>2</quantity>
  </order>
  <order>
    <item>Whatchamacallit</item>
    <price>35</price>
    <quantity>1</quantity>
  </order>
</orders>

Example B-8 shows an XSLT stylesheet for converting this document into a summary format.

Example B-8. An XSLT stylesheet for processing orders

<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   
  <xsl:output indent="yes"/>
   
  <xsl:template match="/">
    <orderSummary>
      <expensiveItems>
        <xsl:apply-templates select="/orders/order[price >= 30]"/>
      </expensiveItems>
      <cheapItems>
        <xsl:apply-templates select="/orders/order[price &lt; 30]"/>
      </cheapItems>
    </orderSummary>
  </xsl:template>
   
  <xsl:template match="order">
    <xsl:element name="{item}">
      <xsl:attribute name="totalPrice">
        <xsl:value-of select="price * quantity"/>
      </xsl:attribute>
    </xsl:element>
  </xsl:template>
   
</xsl:stylesheet>

This stylesheet introduces some more features of XPath and XSLT. Let’s step through the stylesheet just as we did with the first two examples.

This time, the xsl:output method does not include a method attribute. Since it defaults to xml (as ...