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From Marcus Crafter <>
Subject [C2] RequestParamMatcherFactory
Date Fri, 03 Nov 2000 18:18:44 GMT
Hi All,

	Hope everything is going well.

	Sometimes one would like to select a stylesheet in Cocoon 2
	dynamically specified in a parameter given at request time.

	Attached is a new file to do exactly this.

	For example, consider the following sitemap pipeline:

<map:match pattern="someuri.xml">
	<map:generate type="serverpages" src="source.xml"/>
	<map:transform src="intermediate.xsl"/>
	<map:match type="reqparam" pattern="final">
		<map:transform type="xslt" src="{1}"/>

	The attached 'matcher' examines the request object for a cgi parameter
	named 'final'. If there is one there, then the {1} specification in
	the child transform element is replaced with the value of this

	This allows you to specify a stylesheet to be used on the request
	line, which itself can be generated dynamically based on some other
	properties. (eg: http://somehost/someuri.xml?final=style2.xsl)

	To use this matcher, add the following line to your sitemap
	configuration in the 'map:matchers' section (with the attached file
	added to your cocoon distribution in the 'matching' directory, or

<map:matcher name="reqparam" factory="org.apache.cocoon.matching.RequestParamMatcherFactory"/>

	Well, I hope this is of use to others apart from me. Any suggestions,
	improvements or more ideas are welcomed.

	Hope everyone has a good weekend.


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