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Plugin - An archive file (.car or .war) that can be installed into Geronimo to install a specific new service, such as ActiveMQ. For more about plugins, or to look at available plugins, check out geronimoplugins.com or geronimoplugincentral.org.
.CAR file (Configuration ARchive) - An archive file that stores Geronimo-specific configurations, as well as the classes, libraries, web pages, and other information associated with an application.
.WAR file (Web ARchive)- An archive file that contains a web application, including all of its classes, libraries, HTML and JSP pages, and other information. It can be deployed on any Java Enterprise compatible servlet container.
ACE (Administration Console Extension) - An archive file (either a .car or a .war), that includes Administration Console portlets. These portlets will be added to the Extensible Administration Console when the ACE is activated.
Extensible Administration console - A flexible version of Geronimo's original administration console. Once installed it is available at http://localhost:8080/console^{Image Removed}, and includes some portlets that correspond to the currently activated services in Geronimo.
Service - a component or set of functionality for Geronimo - it may be pre-installed, such as the Tomcat or Jetty web container, or it may be installed as a plugin.
Minimal console - The administration console as it is first installed - with only the services necessary for basic functionality.
Portlet - A web user interface component that can be assembled together with other similar components to create a web (portal) page. See the Portlet Specification JSR 286.

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1. Declare a dependency on the pluto-porta plugin XML

   Code Block
   XML
   borderStyle solid
   <dependencies> ... <dependency> <groupId>org.apache.geronimo.plugins</groupId> <artifactId>pluto-support</artifactId> </dependency> </dependencies>

2. Define an AdminConsoleExtensionGBean XML

   Code Block
   XML borderStyle solid
   <gbean name="example" class="org.apache.geronimo.pluto.AdminConsoleExtensionGBean"> <attribute name="pageTitle">Testing</attribute> <attribute name="portletContext">/HelloWorldPortlet</attribute> <attribute name="portletList">[HelloWorldPortlet]</attribute> </gbean>

   where the attributes are defined as follows:

• pageTitle is the name of the page to add these portlets to (new or existing)
• portletContext is the context of where the portlets are installed.
• portletList is a comma-delimited list of the portlets to be added to this page.

<web-app xmlns="http://geronimo.apache.org/xml/ns/j2ee/web-1.2">
    <environment>
        <moduleId>
            <groupId>org.apache.geronimo.portals</groupId>
            <artifactId>pluto-example</artifactId>
            <version>1.0-SNAPSHOT</version>
            <type>war</type>
        </moduleId>
        
        <dependencies>
            <dependency> <!-- Put a dependancy on the hosting portal (pluto) -->
                <groupId>org.apache.geronimo.plugins</groupId>
                <artifactId>pluto-support</artifactId>
            </dependency>
        </dependencies>
    </environment>
    
    <!-- This is where the files are accessed from. (aka - portletContext) -->
    <context-root>/HelloWorldPortlet</context-root>
    
    <!-- Start off a ACEGBean, this is the lifecycle for the portlet -->
    <gbean name="PlutoTest" class="org.apache.geronimo.pluto.AdminConsoleExtensionGBean">
        <attribute name="pageTitle">Hello</attribute>
        <attribute name="portletContext">/HelloWorldPortlet</attribute>
        <attribute name="portletList">[HelloWorldPortlet]</attribute>
        <reference name="PortalContainerServices">
            <name>PlutoPortalServices</name>
        </reference>
    </gbean>
</web-app>

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Verifying installation

Go to http://localhost:8080/console/^{Image Removed} to verify that the portlets were added to the correct page. (You may need to refresh the browser if you deployed the application from the command line.)

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This is a working simple example of an Administration Console Extension.
Download the example WAR

package org.apache.pluto.examples;

import java.io.IOException; 
import java.io.PrintWriter;

import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

/**
 * A very simple portlet example.
 * This portlet displays 'Hello World' to the end user
 */
public class HelloWorldPortlet extends GenericPortlet {

    // This function is called when a user requests to view this portlet (by
    // navigating to the webpage in Pluto)
    public void doView(RenderRequest request, RenderResponse response)
            throws PortletException, IOException {

        // Set the response to read HTML
        response.setContentType("text/html;charset=UTF-8");

        // Required call for use of getWriter() and getPortletOutputStream()
        PrintWriter out = response.getWriter();
        // Write content to the portlet
        out.println("<h1>Hello World</h1>");
    }
}