RE: sorting by maximum value of multiple nodes

XSLT 1.0 or XSLT 2.0?
-- 
Charles Knell
cknell(_at_)onebox(_dot_)com - email



-----Original Message-----
From:     Billie <whynot77(_at_)cooltoad(_dot_)com>
Sent:     Wed, 8 Feb 2006 13:09:52 -0500
To:       xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject:  [xsl] sorting by maximum value of multiple nodes

Hi everyone,
What I'd like to do is sort a list by the maximum value of a node that may
appear multiple times.  I think I'll do much better explaining this in code
rather than words, so here is the XML:

<employees>
        <employee>
                <firstName>Joe</firstName>
                <lastName>Black</lastName>
                <Patent>
                        <date>2005-10-13</date>
                        <id>65-AHK</id>
                </Patent>
                <Patent>
                        <date>2006-01-03</date>
                        <id>65-AHK</id>
                </Patent>
                <Patent>
                        <date>2004-08-24</date>
                        <id>65-AHK</id>
                </Patent>
        </employee>
        <employee>
                <firstName>Jane</firstName>
                <lastName>Doe</lastName>
                <Patent>
                        <date>2005-11-18</date>
                        <id>65-AHK</id>
                </Patent>
                <Patent>
                        <date>2006-01-19</date>
                        <id>65-AHK</id>
                </Patent>
        </employee>
<employees>

I'm looking to sort this list by which employee has the most recent Patent, so
in this case, Jane Doe would be first because her most recent Patent has a
date of 2006-01-19 and Joe Black's most recent Patent has a date of 2006-01-03.

So I would want the XSL to be something like:
<xsl:apply-templates select="employee">
        <xsl:sort>
                (what do I do here?)
        </xsl:sort>
</xsl:apply-templates>

Thanks for any help!

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