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|
Random
Attributes
| URI: | http://www.xml.org/pipe/xpe/filter/random |
| Type: | filter |
| Namespace: | http://www.xml.org/pipe/xpe |
| Owner: | http://www.xmlpipe.org/xpe |
Description
This filter generates random values. The filter reacts to the following XML fragment:
<t:random type="{int,double,gaussian,boolean}" xmlns:t="http://www.xml.org/pipe/xpe" />
The entire element is replaced by a unique random value by the filter.
Example usage
The following example illustrates how the Random filter could be used within an XPE pipeline definition (xpipedef.xml) file:
<xpipeDef xmlns="http://www.xml.org/xml/pipe" >
<register uri="xslt/randomgen" >
<xslt href="ROOT/test/xslt/randomgen.xsl" />
</register>
<register uri="random" >
<xpipe>
<xnode type="http://www.xml.org/pipe/xpe/source/http" />
<xnode type="xslt/randomgen" />
<xnode type="http://www.xml.org/pipe/xpe/filter/random" />
<xsink type="http://www.xml.org/pipe/xpe/sink/http" >
<property name="method" value="xml" />
</xsink>
</xpipe>
</register>
</xpipeDef>
If randomgen.xsl contains the following:
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
<xsl:import href="copy.xsl" />
<xsl:output method="xml" />
<xsl:template match="http:httpRequest" >
<result xmlns="" >
<randomInt>
<t:random type="int" xmlns:t="http://www.xml.org/pipe/xpe" />
</randomInt>
<randomDouble>
<t:random type="double" xmlns:t="http://www.xml.org/pipe/xpe" />
</randomDouble>
<randomGaussian>
<t:random type="gaussian" xmlns:t="http://www.xml.org/pipe/xpe" />
</randomGaussian>
<randomBoolean>
<t:random type="boolean" xmlns:t="http://www.xml.org/pipe/xpe" />
</randomBoolean>
</result>
</xsl:template>
</xsl:stylesheet>
Then executing the pipeline (via a HTTP GET) will produce XML similar to:
<result xmlns="" >
<randomInt>
8
</randomInt>
<randomDouble>
0.10665924677915783
</randomDouble>
<randomGaussian>
0.6184980169710917
</randomGaussian>
<randomBoolean>
false
</randomBoolean>
</result>