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<< System.XML WCF, WS, SOAP >>

By	Dimitre Novatchev
First Posted	05/11/2002
Times viewed	147

Finding the Maximum Date

Summary This snipet demonstrates how to use FXSL to find a maximum of dates

From xsltalk ("Max Date From Node Set", http://groups.yahoo.com/group/XSLTalk/message/6713): "All Is there a way for me to get the Maximum date from a node set?? Thanks Paul" This is straigntforward to achieve with FXSL. Use the maximum() function/template and specify your own comparison function. An example source xml, the XSLT solution and the result obtained are listed in the sections bellow. Cheers, Dimitre Novatchev.

Additional information
testMaximumDate.xsl: ------------------- <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:vendor="urn:schemas-microsoft-com:xslt" xmlns:MycompareDates="MycompareDates" exclude-result-prefixes="xsl MycompareDates" > <xsl:import href="maximum.xsl"/> <xsl:output omit-xml-declaration="yes"/>  <MycompareDates:MycompareDates/> <xsl:template match="/"> <xsl:variable name="vCMPFun" select="document('')/*/MycompareDates:*[1~"/> <xsl:variable name="vrtfResult"> <xsl:call-template name="maximum"> <xsl:with-param name="pList" select="/*/*"/> <xsl:with-param name="pCMPFun" select="$vCMPFun"/> </xsl:call-template> </xsl:variable> <xsl:copy-of select="vendor:node-set($vrtfResult)/*"/> </xsl:template> <xsl:template name="MycompareDates" match="MycompareDates:*"> <xsl:param name="arg1"/> <xsl:param name="arg2"/> <xsl:variable name="vDate1" select="translate($arg1/date, '/', '')"/> <xsl:variable name="vDate2" select="translate($arg2/date, '/', '')"/> <xsl:choose> <xsl:when test="$vDate1 > $vDate2">1</xsl:when> <xsl:when test="$vDate1 = $vDate2"> <xsl:variable name="vTime1" select="translate($arg1/time, ':APM', '') + 120000 * (substring($arg1/time, 9,2)='PM')"/> <xsl:variable name="vTime2" select="translate($arg1/time, ':APM', '') + 120000 * (substring($arg1/time, 9,2)='PM')"/> <xsl:if test="$vTime1 > $vTime2">1</xsl:if> </xsl:when> </xsl:choose> </xsl:template> </xsl:stylesheet> Result: ------ <entry> <date>2002/02/15</date> <time>10:24:11PM</time> <subject>Subject6</subject> </entry>

Further additional information
date-time.xml ------------- <contents> <entry> <date>2002/02/13</date> <time>10:24:11AM</time> <subject>Subject1</subject> </entry> <entry> <date>2002/02/11</date> <time>10:24:11AM</time> <subject>Subject2</subject> </entry> <entry> <date>2002/02/13</date> <time>10:24:11PM</time> <subject>Subject3</subject> </entry> <entry> <date>2002/02/10</date> <time>10:24:11AM</time> <subject>Subject4</subject> </entry> <entry> <date>2002/02/15</date> <time>10:24:11AM</time> <subject>Subject5</subject> </entry> <entry> <date>2002/02/15</date> <time>10:24:11PM</time> <subject>Subject6</subject> </entry> <entry> <date>2002/02/13</date> <time>10:24:11AM</time> <subject>Subject7</subject> </entry> </contents>

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