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File: Data.xml
<winelist>
<wine grape="A">
<winery>shop 2</winery>
<product>product 2</product>
<year>2008</year>
<prices>
<list>10.99</list>
<discounted>9.50</discounted>
</prices>
</wine>
</winelist>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml" omit-xml-declaration="yes" indent="no" />
<xsl:template match="winelist">
Wines needing their "discount" value set:
<xsl:for-each select="wine/prices/discounted[not(text())]">
<xsl:value-of select="../../year" />
<xsl:text> </xsl:text>
<xsl:value-of select="../../winery" />
<xsl:text> </xsl:text>
<xsl:value-of select="../../product" />
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
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