XSL: Print divider by checking variables - xslt

Question

I'm new to XSL and i want to do something like
var oldvalue= ''
for each
get currentvalue
if (oldvalue != currentvalue)
{
print divider
oldvalue = currentvalue
}
end for
I've tried it with
<xsl:variable name="oldname" select="name" />
<xsl:for-each select="myxpathstring">
<xsl:choose>
<xsl:when test="$newname = $newname">
<xsl:variable name="oldname" select="$newname" />
<div class='divider'>divider stuff </div>
</xsl:when>
<xsl:otherwise>No</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
But that doesn't work because i can't update the 'oldname' variable.
Anyone have a solution ?
The complete XSL (with JSP-parameters because i generate the XSL dynamically)
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:variable name="counter" select="count(<%= request.getParameter("xpath")%>)" />
<div id='counter' class='ui-state-highlight ui-corner-all'><p><span style="float: left; margin-right: .3em;" class="ui-icon ui-icon-info"></span><xsl:value-of select="$counter"/> schema's gevonden</p></div>
<div class="page_navigation ui-widget-header ui-corner-all"></div>
<ul id='schemeslist' class="content">
<xsl:for-each select="<%= request.getParameter("xpath")%>"><!-- filter on sports //scheme[ (sports/sport ='Fietsen') and (planduration=12 or planduration=16)]-->
<xsl:sort select="name"/>
<!-- ////////////////// -->
<!-- print divider if name is new -->
<!-- ////////////////// -->
<li class='scheme' id='scheme'>
<div class='schemeSports'>
<!-- <xsl:for-each select="sports/sport">
<xsl:value-of select="."/>
</xsl:for-each> -->
<xsl:value-of select="sport"/>
</div>
<xsl:variable name="theid" select="#id" />
<div class='schemeName'><xsl:value-of select="name"/></div>
<div class='planDuration'><xsl:value-of select="planduration"/></div>
<div class='fitnessLevel'><xsl:value-of select="fitnesslevel"/></div>
<div class='order'>
<xsl:if test="price != ''"><xsl:value-of select="price"/>euro</xsl:if>
<button class='more' onClick='showInfo("{$theid}")' id='{$theid}'>MEER</button> <button class='buy' onClick='window.location = "buy.html?ID={$theid}"'>KOOP</button>
</div>
</li>
</xsl:for-each>
</ul>
<div style='clear:both'></div>
<div class="page_navigation ui-widget-header ui-corner-all"></div>
</xsl:template>
</xsl:stylesheet>
and here is a sample of the complete xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<schemes lang='nl-BE'>
<scheme id='5E47B7E9'>
<sport>Fietsen</sport>
<author>Energy Lab</author>
<name>Voorbereiding op de Ronde van Vlaanderen</name>
<planduration>16</planduration>
<fitnesslevel>Beginner</fitnesslevel>
<frequency>1-3</frequency>
<longtraining></longtraining>
<rollers>Ja</rollers>
<price>12</price>
<description>
<![CDATA[...]]>
</description>
</scheme>
<scheme id='5E47B7E9'>
<sport>Triatlon</sport>
<author>Energy Lab</author>
<name>Voorbereiding op de Ronde van Vlaanderen</name>
<planduration>16</planduration>
<fitnesslevel>Expert</fitnesslevel>
<frequency>1-3</frequency>
<longtraining></longtraining>
<rollers>Ja</rollers>
<price>12</price>
<description>
<![CDATA[...]]>
</description>
</scheme>
<scheme id='5E47B7E9'>
<sport>Fietsen</sport>
<author>Energy Lab</author>
<name>Voorbereiding op een Triatlon</name>
<planduration>24</planduration>
<fitnesslevel>Beginner</fitnesslevel>
<frequency>1-3</frequency>
<longtraining></longtraining>
<rollers>Ja</rollers>
<price>48</price>
<description>
<![CDATA[...]]>
</description>
</scheme>
</schemes>

Answer 1

Create a function that returns the new value, taking as parameters the old value and the list of values in myxpathstring.

Answer 2

If I understand your XSLT correct you have to use muenchian grouping. Read this article for a description of how this method works.
XML:
<?xml version="1.0" encoding="UTF-8"?>
<schemes lang='nl-BE'>
<scheme id='5E47B7E9'>
<sport>Fietsen</sport>
<author>Energy Lab</author>
<name>Voorbereiding op de Ronde van Vlaanderen</name>
<planduration>16</planduration>
<fitnesslevel>Beginner</fitnesslevel>
<frequency>1-3</frequency>
<longtraining></longtraining>
<rollers>Ja</rollers>
<price>12</price>
<description><![CDATA[...]]></description>
</scheme>
<scheme id='5E47B7E9'>
<sport>Triatlon</sport>
<author>Energy Lab</author>
<name>Voorbereiding op de Ronde van Vlaanderen</name>
<planduration>16</planduration>
<fitnesslevel>Expert</fitnesslevel>
<frequency>1-3</frequency>
<longtraining></longtraining>
<rollers>Ja</rollers>
<price>12</price>
<description><![CDATA[...]]></description>
</scheme>
<scheme id='5E47B7E9'>
<sport>Fietsen</sport>
<author>Energy Lab</author>
<name>Voorbereiding op een Triatlon</name>
<planduration>24</planduration>
<fitnesslevel>Beginner</fitnesslevel>
<frequency>1-3</frequency>
<longtraining></longtraining>
<rollers>Ja</rollers>
<price>48</price>
<description><![CDATA[...]]></description>
</scheme>
</schemes>
XSLT:
I replaced the first jsp-tag with a dot and removed the second because I have no idea what you try to achieve with. I do not recommend dynamic *.xsl. You better put these information in your input.xml and query it with xpath.
<?xml version='1.0' encoding='UTF-8'?>
<xsl:stylesheet version='1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:output method='xml' indent='yes' omit-xml-declaration='yes'/>
<xsl:key name='schemata' match='scheme' use='name'/>
<xsl:template match='scheme'>
<li class='scheme' id='scheme'>
<div class='schemeSports'>
<xsl:value-of select="sport"/>
</div>
<xsl:variable name="theid" select="#id"/>
<div class='schemeName'>
<xsl:value-of select="name"/>
</div>
<div class='planDuration'>
<xsl:value-of select="planduration"/>
</div>
<div class='fitnessLevel'>
<xsl:value-of select="fitnesslevel"/>
</div>
<div class='order'>
<xsl:if test="price != ''">
<xsl:value-of select="price"/>
euro
</xsl:if>
<button class='more' onClick='showInfo("{$theid}")' id='{$theid}'>MEER</button>
<button class='buy' onClick='window.location = "buy.html?ID={$theid}"'>KOOP</button>
</div>
</li>
</xsl:template>
<xsl:template match='/schemes'>
<xsl:variable name="counter" select="count(.)"/> <!-- jsp -->
<div id='counter' class='ui-state-highlight ui-corner-all'>
<p>
<span style="float: left; margin-right: .3em;" class="ui-icon ui-icon-info"/>
<xsl:value-of select="$counter"/>
<xsl:text> schema's gevonden</xsl:text>
</p>
</div>
<div class="page_navigation ui-widget-header ui-corner-all"/>
<ul id='schemeslist' class="content">
<!-- muenchian grouping -->
<xsl:for-each select='scheme[generate-id() = generate-id(key("schemata", name)[1])]'>
<xsl:sort select='name'/>
<xsl:if test='position() != 1'>
<div class='divider'/>
</xsl:if>
<xsl:apply-templates select='key("schemata", name)'/>
</xsl:for-each>
</ul>
<div style='clear:both'/>
<div class="page_navigation ui-widget-header ui-corner-all"/>
</xsl:template>
</xsl:stylesheet>
Result:
<div id="counter" class="ui-state-highlight ui-corner-all">
<p><span style="float: left; margin-right: .3em;" class="ui-icon ui-icon-info"/>1 schema's gevonden</p>
</div><div class="page_navigation ui-widget-header ui-corner-all"/><ul id="schemeslist" class="content">
<li class="scheme" id="scheme">
<div class="schemeSports">Fietsen</div>
<div class="schemeName">Voorbereiding op de Ronde van Vlaanderen</div>
<div class="planDuration">16</div>
<div class="fitnessLevel">Beginner</div>
<div class="order">12
euro
<button class="more" onClick="showInfo("5E47B7E9")" id="5E47B7E9">MEER</button><button class="buy" onClick="window.location = "buy.html?ID=5E47B7E9"">KOOP</button></div>
</li>
<li class="scheme" id="scheme">
<div class="schemeSports">Triatlon</div>
<div class="schemeName">Voorbereiding op de Ronde van Vlaanderen</div>
<div class="planDuration">16</div>
<div class="fitnessLevel">Expert</div>
<div class="order">12
euro
<button class="more" onClick="showInfo("5E47B7E9")" id="5E47B7E9">MEER</button><button class="buy" onClick="window.location = "buy.html?ID=5E47B7E9"">KOOP</button></div>
</li>
<div class="divider"/>
<li class="scheme" id="scheme">
<div class="schemeSports">Fietsen</div>
<div class="schemeName">Voorbereiding op een Triatlon</div>
<div class="planDuration">24</div>
<div class="fitnessLevel">Beginner</div>
<div class="order">48
euro
<button class="more" onClick="showInfo("5E47B7E9")" id="5E47B7E9">MEER</button><button class="buy" onClick="window.location = "buy.html?ID=5E47B7E9"">KOOP</button></div>
</li>
</ul><div style="clear:both"/><div class="page_navigation ui-widget-header ui-corner-all"/>