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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 168.

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Below we have a high level view of the interactions between a new plugin and Pluto. This is essentially the 'plumbing' beneath the administration console.

We have a WAR file containing portlet information and the definition of an Administration Console Extension (ACE) GBean on the left. The ACE GBean is the way in which we can invoke operations on Pluto (this will be covered shortly).

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The first use case we will look at will also be used to describe the individual pieces that make administration console function.

On the left, we begin with a simple Geronimo deployment plan (geronimo-web.xml, for instance). This deployment plan is the same deployment plan included in any archive that you may wish to deploy into Geronimo. In this case, the deployment plan includes the definition for a special AdminConsoleExtensionGBean. The specifics of what goes into an AdminConsoleExtensionGBean will be described in more detail later.

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A deployment plan may also include definitions for multiple AdminConsoleExtensionGBeans. This means that a deployment plan, if it chooses to do so, may add as many pages to the console as it wants to.

Removing pages (Figure 3) from the console follows a similar process. Because the AdminConsoleExtensionGBean implements the GBeanLifecycle, when the installed component is stopped, its AdminConsoleExtensionGBean will also be stopped. When this happens, we once more ask the kernel for the PortalContainerServiceGBean, which is used to call removePortlet on Pluto through its API. From the view of the administration console, the user will see the page has disappeared from the navigation menu (Figure 4). If the user starts the component again, the GBeanLifecycle's doStart calls addPortlet on Pluto Container, and the administration console extension reappears on the navigation menu (Figure 5).

Class/Dependency Structure

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1. Command Line: <geronimo bin folder>/deploy.bat deploy <path to war>
   Example:
   cd c:/g/target/geronimo-tomcat6-minimal-2.0-SNAPSHOT/bin/
deploy.bat deploy c:/HelloWorldPortlet.war
2. Using the Admin Console:

   Center
   Image Added

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 from the command line.)

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