printing a count with XSLT
I have an XML file which I'm trying to transform into XHTML using a XSLT file. I was wondering if it's possible to get a count of the number of times a template has been invoked. This is my XML:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="car.xslt" version="1.0"?>
<vehicle>
<car>
<make>Honda</make>
<color>blue</color>
</car>
<car>
<make>Saab</make>
<color>red</color>
&l开发者_如何学JAVAt;/car>
</vehicle>
And this is my XSLT:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet xmlns="http://www.w3.org/1999/xhtml" version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<table cellpadding="5" border="1">
<tr><td>number</td><td>make</td><td>color</td></tr>
<xsl:apply-templates/>
</table>
</body>
</html>
</xsl:template>
<xsl:template match="car">
<tr>
<td>#</td><td><xsl:value-of select="make"/></td><td><xsl:value-of select="color"/></td>
</tr>
</xsl:template>
</xsl:stylesheet>
I want to print the number of times a car has been printed in the place of #, so it would look like this:
number make color 1 Honda blue 2 Saab red
instead of:
number make color # Honda blue # Saab red
Anybody have any ideas? I was hoping this could be done with just xsl:value-of and XPath
Replace
#
With
<xsl:value-of select="position()"/>
You can rearrange this a bit so that instead of using <xsl:apply-templates/>, do something like this:
<tr><td>number</td><td>make</td><td>color</td></tr>
<xsl:for-each select="/vehicle/car">
<tr>
<td><xsl:value-of select="position()" /></td><td>...</td>
</tr>
</xsl:for-each>
In this case, the position() function will refer to the iteration number of the associated for-each loop. This may give you what you're looking for.
Minimal change:
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns="http://www.w3.org/1999/xhtml"
>
<xsl:template match="/vehicle">
<html>
<body>
<table cellpadding="5" border="1">
<tr>
<td>number</td>
<td>make</td>
<td>color</td>
</tr>
<xsl:apply-templates select="car" />
</table>
</body>
</html>
</xsl:template>
<xsl:template match="car">
<tr>
<td><xsl:value-of select="position()" /></td>
<td><xsl:value-of select="make" /></td>
<td><xsl:value-of select="color" /></td>
</tr>
</xsl:template>
</xsl:stylesheet>
Note the select="car" attribute on the <xsl:apply-templates>. It makes sure that only <car> nodes are counted, so your position() is not off.
Also note that the main template now matches the document element, not the root node.
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