Here is another possible solution (using node-set extension function):
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:common="http://exslt.org/common"
exclude-result-prefixes="common"
version="1.0">
<xsl:output method="xml" indent="yes"/>
<xsl:key name="by-type" match="contact" use="@type" />
<xsl:template match="/x">
<totals>
<xsl:variable name="rtf">
<xsl:for-each select="contacts/contact[generate-id() =
generate-id(key('by-type', @type)[1])]">
<temp><xsl:value-of select="count(key('by-type', @type)) *
../../types/type[(_at_)value = current()/@type]/@benchmark1" /></temp>
</xsl:for-each>
</xsl:variable>
<benchmark val="{sum(common:node-set($rtf)/temp)}" />
</totals>
</xsl:template>
</xsl:stylesheet>
When the above stylesheet is applied to the following XML:
<?xml version="1.0"?>
<x>
<types>
<type value="1" benchmark1="540" />
<type value="2" benchmark1="640" />
<type value="3" benchmark1="740" />
</types>
<contacts>
<contact type="1" />
<contact type="2" />
<contact type="3" />
<contact type="3" />
</contacts>
</x>
The output produced is:
<?xml version="1.0" encoding="UTF-8"?>
<totals>
<benchmark val="2660"/>
</totals>
On 2/20/07, Steve <stephen(_at_)yeago(_dot_)net> wrote:
I could do the following easily by making a recursive template and
then looping through the contacts, and passing on the corresponding
benchmark value. But could xsl:key make for a shorter, more elegant
solution?
Instead of performing an addition for each <contact>, could I simply
sum() them at once, somehow?
With the following XML
<types>
<type value="1" benchmark1="540" />
<type value="2" benchmark1="640" />
<type value="3" benchmark1="740" />
</types>
<contacts>
<contact type="1" />
<contact type="2" />
<contact type="3" />
<contact type="3" />
</contacts>
desired output:
<totals>
<benchmark val='2660' />
</totals>
--
Regards,
Mukul Gandhi
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