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Old July 22nd, 2003, 02:09 AM
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Default Need Help with the Sum Function

Hello i am really new with XLST i was just wondering on how do you go about adding values from the following.


What i want to do is to add the points for each seperate user week by week and show them as a total.

This is week 2 and Pepper has a total of X points ..
This is week 2 and Eel has a total of Y Points ..

Hope this makes sence..

Thanks to anyone that can help me...

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Old July 22nd, 2003, 10:06 AM
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Send a message via Yahoo to armmarti


It's a grouping problem. Probably the code below needs some optimization and
simplification... However, I tried to simplify the code as much as possible.
This approach with keys will be better(efficient) if the source XML will be bigger.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:key name="weeks" match="Rank" use="Position/WeekID"/>
    <xsl:key name="users" match="Rank" use="Position/UserID"/>

    <xsl:template match="/">
                <table border="1">
                    <xsl:for-each select="/Ranks/Rank/Position/WeekID[generate-id(ancestor::Rank) = generate-id(key('weeks', .)[1])]">
                        <xsl:sort select="." data-type="number"/>
                        <xsl:variable name="current-week-id" select="."/>
                            <td>Week <xsl:value-of select="."/>:</td>
                                <xsl:for-each select="/Ranks/Rank/Position/UserID[generate-id(ancestor::Rank) = generate-id(key('users', .)[1])]">
                                    <xsl:sort select="following-sibling::NickName" data-type="text"/>
                                    <xsl:sort select="." data-type="number"/>
                                    <!-- the following "xsl:if" element can be stripped out(keeping its content of course), 
                                    but in that case persons which are only, say, in weeks 1 through 2, 
                                    will be also listed for weeks greater than 2 with points 0 (or generally, for weeks in which they have no entry) -->   
                                    <xsl:if test="/Ranks/Rank/Position[WeekID = $current-week-id and UserID = current()]">
                                        <xsl:value-of select="concat(following-sibling::NickName, '[', current(), ']')"/> has a total of <xsl:value-of select="sum(/Ranks/Rank/Position/Points[preceding-sibling::WeekID = $current-week-id and preceding-sibling::UserID = current()])"/> points
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