[xsl] Sorting by child element count

Subject: [xsl] Sorting by child element count
From: "Mark" <mark@xxxxxxxxxxxx>
Date: Wed, 29 Dec 2010 07:21:43 -0800
Happy new year! Thanks for all the help this list has given me over the past two years. My question:

I have an XML document that looks like the listing below. I want to sort the <List> by <Item> so that all the <Items> with one <Data> element are followed by all the <Items> with two <Data> elements, and so on, until the last <Items> in the output list have the most <Data> elements. The <Data> elements have to remain inside their original parent <Item>.

No clue how to begin. Can you point me in the right direction?


... <!bpossibly 1 to 10 or so <Data> elements in each parent <Item> element.
... <!b400 <Item> elements in the <List> b>

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