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This document describes how to run a existing cocoon application as a JSR168 portlet. The following example illustrates how to deploy a subapplication as a JSR168 portlet in Pluto. It should work with any JSR 168 portlet Container.

Tested on

  • jdk 1.4.2_04-b05
  • cocoon 2.1.6
  • pluto-src-1.0.1-rc2
  • Tomcat 4.1.31

Deployment

  1. copied blocks.properties to local.blocks.properties and disabled the scratchpad and cron (this one caused a problem on my configuration, but you might leave that step out) blocks
  2. created a portlet.xml in <COCOON_HOME>/src/webapp/WEB-INF by using <COCOON_HOME>/src/blocks/portal/WEB-INF/portlet.xml as a base and removed the first portlet node so that you only keep the second portlet node (portlet-name = CocoonPortlet). You're might be interested in changing the init-param servlet-path e.g. to the value /yourCocoonSubapp to see the output you normally get when opening http://localhost:8080/cocoon/yourCocoonSubapp if you have a subapp in that directory.
  3. modify <COCOON_HOME>/src/webapp/WEB-INF/cocoon.xconf to include the following input module 
    <component-instance
  class="org.apache.cocoon.components.modules.input.PortletURLModule"
  logger="core.modules.mapper" name="portlet"/>

    it will be used by the [LinkRewriterTransformer] described [#linkproblem below].

  4. built cocoon war (build war) from source
  5. deleted content of <TOMCAT_HOME>/common/endorsed
  6. copied <COCOON_HOME>/lib/endorsed/x*.jar to <TOMCAT_HOME>/common/endorsed
  7. built pluto-src-1.0.1-rc2 (maven fullDeployment)
  8. ran maven deploy -Ddeploy=<COCOON_HOME>/build/cocoon-2.1.6/cocoon.war
  9. add <load-on-startup>1</load-on-startup> to the servlets with servlet-name Cocoon and Xindice in <TOMCAT_HOME>/webapps/cocoon/WEB-INF/web.xml
  10. deleted <TOMCAT_HOME>/webapps/cocoon/WEB-INF/lib/pluto-1.0.1-rc1.jar (makes trouble)
  11. you can savely delete portlet-api-1.0.jar (optional)
  12. modified <TOMCAT_HOME>/webapps/pluto/WEB-INF/data/portletcontexts.txt 
    /testsuite
/cocoon

  13. modified <TOMCAT_HOME>/webapps/pluto/WEB-INF/data/portletentityregistry.xml to include the following inside the <portlet-entity-registry> node: 
        <application id="9">
        <definition-id>cocoon</definition-id>
        <portlet id="1">
            <definition-id>cocoon.CocoonPortlet</definition-id>
        </portlet>
    </application>
  14. modified <TOMCAT_HOME>/webapps/pluto/WEB-INF/data/pageregistry.xml to include the following inside of the <portal> node: 
      <fragment name="cocoon" type="page">
    <navigation>
      <title>Cocoon </title>
      <description>Cocoon distribution...</description>
    </navigation>

    <fragment name="row6" type="row">
      <fragment name="col6" type="column">
	<fragment name="p7" type="portlet">
	  <property name="portlet" value="9.1"/>
	</fragment>
      </fragment>
    </fragment>
  </fragment>

Your cocoon app should now be available as a portlet under http://localhost:8080/pluto/portal/cocoon

Anyway, clicking on a link in that portlet won't work. You have to modify the hrefs of you links to use a scheme that is supported by the above defined portlet input module. You then have to transform your links using the LinkRewriterTransformer. The required scheme is described in the api doc of the module. So instead of using <a href="link.html">link</a> you have to write <a href="portlet:render:link.html">link</a>. You can add the Transformer to your sitemap like this: 

<map:components>
  <map:transformer name="linkrewriter"
    src="org.apache.cocoon.transformation.LinkRewriterTransformer">
    <link-attrs>href src</link-attrs>
    <schemes>portlet</schemes>
    <input-module name="portlet"/>
  </map:transformer>
  </map:transformers>
</map:components>

Then modify your pipeline as follows to actually use the linkrewriter: 

<map:match pattern="">
  <map:read src="cocoon:/index.html"/>
</map:match>

<map:match pattern="*.html">
  <map:generate src="content/{1}.xml"/>
  <map:transform type="linkrewriter"/>
  <map:transform src="style/xsl/page2html.xsl"/>
  <map:serialize type="html"/>
</map:match>

I've not tried to use CForms but I think VadimGritsenko has a solution for this in a blog entry.

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