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Re: [xsl] Random selection
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Subject: Re: [xsl] Random selection From: "Mukul Gandhi" <gandhi.mukul@xxxxxxxxx> Date: Sun, 30 Nov 2008 22:08:59 +0530 |
If you are working in Java environment, you could use the Java class
'Random' for random number support.
(http://java.sun.com/javase/6/docs/api/java/util/Random.html).
Supposing your input XML is (this is just an example for illustration.
your real XML could be different.):
<images>
<image val="a.jpg" />
<image val="b.jpg" />
<image val="c.jpg" />
<image val="d.jpg" />
<image val="e.jpg" />
<image val="f.jpg" />
</images>
The stylesheet could be:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:java="http://xml.apache.org/xalan/java"
exclude-result-prefixes="java"
version="1.0">
<xsl:output method="html" />
<xsl:template match="/">
<xsl:variable name="max" select="count(images/image)" />
<xsl:variable name="random" select="java:java.util.Random.new()"/>
<xsl:variable name="x" select="java:nextInt($random, $max) + 1" />
<!-- this is the random number -->
<html>
<head>
<title/>
</head>
<body>
<img src="{images/image[$x]/@val}" />
</body>
</html>
</xsl:template>
</xsl:stylesheet>
Here I have used the Java extension mechanism provided by Xalan.
On Sun, Nov 30, 2008 at 8:43 PM, sudheshna iyer <sudheshnaiyer@xxxxxxxxx> wrote:
> Here is the more clear explanation of what I am looking for:
>
> I need to select an image from pool of images randomly and produce <img src> element of html.
>
> This xsl should read the image tags from xml and based on the number of image tag nodes in the xml, it
> should display random image by producing <img src> element of html.
>
> Thank you for your help.
--
Regards,
Mukul Gandhi
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