<web-app xmlns="http://caucho.com/ns/resin">
  <!--
     - Instantiates the Emitter resource.
     -
     - This resource sends notifications to any listeners when
     - its send() method is invoked.
    -->
  <resource mbean-name="example:name=emitter"
            type="example.Emitter">
  </resource>
  <!--
     - Instantiates the Listener and registers with the emitter.
     -
     - The <listen> tag registers the listener with the emitter.
     - The "handback" attribute is optional, defaulting to null.
    -->
  <resource mbean-name="example:name=listener"
            type="example.Listener">
    <mbean-listener mbean-name="example:name=emitter" handback="tutorial"/>
  </resource>

  <!--
     - Configures the listener servlet with the emitter and listener.
    -->
  <servlet-mapping url-pattern="/listener"
                   servlet-class="example.ListenerServlet">
    <init>
      <emitter>${jndi:lookup("mbean:example:name=emitter")}</emitter>
      <listener>${jndi:lookup("mbean:example:name=listener")}</listener>
    </init>
  </servlet-mapping>
</web-app>