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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] FW: random output from a xml simple document
 Hip hei!
> XSL processor = Xalan
> how can I output (html)"just one flower" randomly any time?
> from a xml simple document like this
>
> <plants>
> <flower>Magnolia</flower>
> <flower>Iris</flower>
> <flower>Sunflower</flower>
> <flower>Petunia</flower>
> <flower>Daisy</flower>
> <flower>Coliflor</flower>
> <flower>Rosa</flower>
> <flower>Patata</flower>
> </plants>
Did you have something like this in mind?
[c:\temp]type test.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<plants>
<flower>Magnolia</flower>
<flower>Iris</flower>
<flower>Sunflower</flower>
<flower>Petunia</flower>
<flower>Daisy</flower>
<flower>Coliflor</flower>
<flower>Rosa</flower>
<flower>Patata</flower>
</plants>
[c:\temp]type test.xsl
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:java="http://xml.apache.org/xslt/java"
exclude-result-prefixes="java">
<xsl:output method="html"
indent="yes"/>
<xsl:template match="/">
<html>
<head>
<title />
</head>
<body>
<xsl:variable name="R" select="java:java.util.Random.new()" />
<xsl:variable name="r" select="ceiling(count(plants/flower) *
java:nextDouble($R))" />
<xsl:value-of select="plants/flower[$r]" />
</body>
</html>
</xsl:template>
</xsl:stylesheet>
[c:\temp]xalan2-j -in test.xml -xsl test.xsl -ts
Line #16, Column #69: variable, select='java:java.util.Random.new()':
java.util.Random@3c1b02
Line #17, Column #93: variable, select='ceiling(count(plants/flower) *
java:nextDouble($R))': 4
Line #18, Column #50: value-of, select='plants/flower[$r]':
org.apache.xalan.stree.ElementImpl@6f9157
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title></title>
</head>
<body>Petunia</body>
</html>
Seems to work with both Xalan-J and Xalan2-J. There is a (astronomically
small) possibility that nextDouble() will return 0, in which case
plants/flower[$r] will return an empty node list, so you should adjust the
scale to [java.lang.Double.MIN_VALUE,1] - or just use plants/flower[1] when
$r = 0.
Jarno - Funker Vogt: Subspace
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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