Subject: Re: Random selection
From: "Dimitre Novatchev" <dnovatchev@xxxxxxxxx>
Date: Sun, 30 Nov 2008 09:02:52 -0800
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On Sun, Nov 30, 2008 at 8:38 AM, Mukul Gandhi <gandhi.mukul@xxxxxxxxx> wrote:
> If you are working in Java environment, you could use the Java class
> 'Random' for random number support.
>
Hi Mukul,
What about people, who use C#, Python, VB, C++, ..., etc?
I strongly believe that recommending a non-portable solution on this
list when a known, 100% XSLT, portable one exists, should be
discouraged.
--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
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You've achieved success in your field when you don't know whether what
you're doing is work or play
> (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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