Setting XSLT variables within for-each select - xslt

Question

Good Day,
I have an XSLT template I'm assembling that look like:
<xsl:for-each select="CarParts/Items">
<div class="columns"><xsl:value-of select="Quantity"/></div>
<div class="columns"><xsl:value-of select="Amount"/></div>
<div class="columns">[SUBTOTAL]</div><br />
</xsl:for-each>
I know that I can define an XSLT variable like this:
<xsl:variable name="totalAmount" select="sum(CarParts/Items/Amount)" />
But I want my XSLT variable to be [SUBTOTAL] which is equal to Quantity * Amount within the for-each select loop. Is this possible? If this was SQL, this would be the equivalent of a computed column.
Any suggestions?
TIA,
coson

Answer 1

What you want to do is cast the value to a number, then you can multiply it as desired:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:template match="/">
<results>
<xsl:for-each select="CarParts/Items">
<Item id="{position()}">
<q><xsl:value-of select="Quantity"/></q>
<a><xsl:value-of select="Amount"/></a>
<st><xsl:value-of select="number(Quantity)*number(Amount)"/></st>
</Item>
</xsl:for-each>
</results>
</xsl:template>
</xsl:stylesheet>
I changed the formatting a little since there was no provided input/CSS, but you should see what I was going for. Running it on my sample input of
<CarParts>
<Items>
<Quantity>1</Quantity>
<Amount>100.00</Amount>
</Items>
<Items>
<Quantity>2</Quantity>
<Amount>25.00</Amount>
</Items>
<Items>
<Quantity>3</Quantity>
<Amount>6</Amount>
</Items>
</CarParts>
I get the result of
<?xml version="1.0" encoding="utf-8"?>
<results>
<Item id="1">
<q>1</q>
<a>100.00</a>
<st>100</st>
</Item>
<Item id="2">
<q>2</q>
<a>25.00</a>
<st>50</st>
</Item>
<Item id="3">
<q>3</q>
<a>6</a>
<st>18</st>
</Item>
</results>