Inter Portlet Communication in JBoss Portal 2.6

Have you tried to deploy HelloWorldIPC portlet (from Portlet Swap) into JBoss Portal 2.6?
I've tried, but it was unsuccessful.
This portlet works in previous version of JBoss Portal, but doesn't work in 2.6, because some APIs in JBoss Portal was slightly changed.
I've read some developers documentation and found way to resolve this problem, and I created sample of Inter Portlet Communication for JBoss Portal 2.6.
I think, it will be useful for developers. You may see sources below.

Project files

./build.properties
./build.xml
./local.properties
./src
./src/META-INF
./src/META-INF/jboss-service.xml
./src/WEB-INF
./src/WEB-INF/portlet-instances.xml
./src/WEB-INF/portlet.xml
./src/WEB-INF/web.xml
./src/WEB-INF/xlamipc-object.xml
./src/xqx
./src/xqx/web
./src/xqx/web/xlam
./src/xqx/web/xlam/XLamMasterPortlet.java
./src/xqx/web/xlam/XLamSlavePortlet.java

jboss-service.xml

<?xml version="1.0" encoding="UTF-8"?>

<server>
    <mbean code="org.jboss.portal.core.event.PortalEventListenerServiceImpl"
           name="portal:service=ListenerService,type=ipc_listener" xmbean-dd=""
           xmbean-code="org.jboss.portal.jems.as.system.JBossServiceModelMBean">
        <xmbean/>
        <depends
            optional-attribute-name="Registry" proxy-type="attribute">portal:service=ListenerRegistry
        </depends>
        <attribute name="RegistryId">ipc_listener</attribute>
        <attribute name="ListenerClassName">xqx.web.xlam.XLamSlavePortlet$Listener</attribute>
    </mbean>   
</server>

portlet-instances.xml

<?xml version="1.0" standalone="yes"?>
<deployments>
    <deployment>
        <instance>
            <instance-id>XLamMasterPortletInstance</instance-id>
            <portlet-ref>XLamMasterPortlet</portlet-ref>
        </instance>
    </deployment>
    <deployment>
        <instance>
            <instance-id>XLamSlavePortletInstance</instance-id>
            <portlet-ref>XLamSlavePortlet</portlet-ref>
        </instance>
    </deployment>
    
</deployments>

portlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"
             version="1.0">

    <portlet>
        <portlet-name>XLamMasterPortlet</portlet-name>
        <portlet-class>xqx.web.xlam.XLamMasterPortlet</portlet-class>
        <supports>
            <mime-type>text/html</mime-type>
            <portlet-mode>VIEW</portlet-mode>
            <portlet-mode>HELP</portlet-mode>
        </supports>
        <portlet-info>
            <title>XLam Master Portlet</title>
        </portlet-info>
    </portlet>

    <portlet>
        <portlet-name>XLamSlavePortlet</portlet-name>
        <portlet-class>xqx.web.xlam.XLamSlavePortlet</portlet-class>
        <supports>
            <mime-type>text/html</mime-type>
            <portlet-mode>VIEW</portlet-mode>
        </supports>
        <portlet-info>
            <title>XLam Slave Portlet</title>
        </portlet-info>
    </portlet>
   
</portlet-app>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
</web-app>


xlamipc-object.xml

<?xml version="1.0" encoding="UTF-8"?>
<deployments>
    <deployment>
        <if-exists>overwrite</if-exists>
        <parent-ref>default</parent-ref>
        <page>
            <page-name>XLamIPC</page-name>
            <listener>ipc_listener</listener>
            <window>
                <window-name>XLamMasterPortletWindow</window-name>
                <instance-ref>XLamMasterPortletInstance</instance-ref>
                <region>left</region>
                <height>0</height>
            </window>

            <window>
                <window-name>XLamSlavePortletWindow</window-name>
                <instance-ref>XLamSlavePortletInstance</instance-ref>
                <region>center</region>
                <height>0</height>
            </window>
        </page>
    </deployment>

</deployments>

XLamMasterPortlet.java

package xqx.web.xlam;


import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class XLamMasterPortlet extends GenericPortlet
{
    protected void doView(RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException, IOException
    {
        renderResponse.setContentType("text/html");
        PrintWriter writer = renderResponse.getWriter();
        writer.println("<form action='" + renderResponse.createActionURL() + "' method='post'>");
        writer.println("<input name='txt' type='text'/>");
        writer.println("<input type='submit' value='Send to Slave' />");
        writer.println("</form>");
        writer.close();
    }

    protected void doHelp(RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException, IOException
    {
        renderResponse.setContentType("text/html");
        PrintWriter writer = renderResponse.getWriter();
        writer.write("Visit <a href='http://xantorohara.blogspot.com/'>Xantorohara blog</a> for another info.");
        writer.close();
    }

    public void processAction(ActionRequest actionRequest, ActionResponse actionResponse) throws PortletException, IOException
    {
        //prevent super exception
    }
}

XLamSlavePortlet.java

package xqx.web.xlam;

import org.jboss.portal.WindowState;
import org.jboss.portal.api.node.PortalNode;
import org.jboss.portal.api.node.event.PortalNodeEvent;
import org.jboss.portal.api.node.event.PortalNodeEventContext;
import org.jboss.portal.api.node.event.PortalNodeEventListener;
import org.jboss.portal.api.node.event.WindowActionEvent;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.PortletSecurityException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class XLamSlavePortlet extends GenericPortlet
{
    public static class Listener implements PortalNodeEventListener
    {
        public PortalNodeEvent onEvent(PortalNodeEventContext context, PortalNodeEvent event)
        {
            PortalNode node = event.getNode();
            String nodeName = node.getName();
            WindowActionEvent newEvent = null;
            if (nodeName.equals("XLamMasterPortletWindow") && event instanceof WindowActionEvent)
            {
                WindowActionEvent wae = (WindowActionEvent) event;
                PortalNode windowB = node.resolve("../XLamSlavePortletWindow");
                if (windowB != null)
                {
                    newEvent = new WindowActionEvent(windowB);
                    newEvent.setMode(wae.getMode());
                    newEvent.setWindowState(WindowState.MAXIMIZED);
                    newEvent.setParameters(wae.getParameters());
                    return newEvent;
                }
            }
            return context.dispatch();
        }
    }

    public void processAction(ActionRequest request, ActionResponse response) throws PortletException, PortletSecurityException, IOException
    {
        String txt = request.getParameter("txt");
        if (txt != null)
        {
            response.setRenderParameter("txt", txt);
        }
    }


    protected void doView(RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException, PortletSecurityException, IOException
    {
        renderResponse.setContentType("text/html");
        PrintWriter writer = renderResponse.getWriter();
        writer.write("Message from Master:");
        String txt = renderRequest.getParameter("txt");
        writer.println("txt: " + txt);
        writer.close();
    }
}

build.properties

project.name=XLamIPC

build.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
    
<project name="xlam" default="war">

    <property file="local.properties"/>
    <property file="build.properties"/>

    <property name="build" value="build"/>
    <property name="jarfile" value="${project.name}.jar"/>
    <property name="warfile" value="${project.name}.war"/>
    <property name="sarfile" value="${project.name}.sar"/>

    <path id="classpath">
        <fileset dir="${jbossportal.lib}" includes="**/*.jar"/>
    </path>

    <target name="clean">
        <delete dir="${build}"/>
    </target>

    <target name="jar" depends="clean">
        <mkdir dir="${build}/bin"/>
        <javac srcdir="src" destdir="${build}/bin" classpathref="classpath" debug="true"/>
        <jar basedir="${build}/bin" jarfile="${build}/${jarfile}"/>
    </target>

    <target name="war" depends="jar">
        <copy file="${build}/${jarfile}" todir="${build}/war/WEB-INF/lib"/>
        <copy todir="${build}/war/WEB-INF">
            <fileset dir="src/WEB-INF"/>
        </copy>
        <jar basedir="${build}/war" jarfile="${build}/${warfile}"/>
    </target>

    <target name="sar" depends="war">
        <copy file="${build}/${warfile}" todir="${build}/sar"/>
        <copy file="${build}/${jarfile}" todir="${build}/sar/lib"/>
        <copy todir="${build}/sar/META-INF">
            <fileset dir="src/META-INF"/>
        </copy>
        <jar basedir="${build}/sar" jarfile="${build}/${sarfile}"/>
    </target>

    <target name="undeploy">
        <delete file="${jbossportal.node}/deploy/${sarfile}"/>
    </target>

    <target name="deploy" depends="undeploy, sar">
        <copy file="${build}/${sarfile}" todir="${jbossportal.node}/deploy"/>
    </target>
</project>

local.properties (* You should replace paths with your real data)

jdk.home=E:/devenv/tools/jdk-1.5.0_04

jbossportal.home=E:/devenv/tools/jboss-portal-2.6
jbossportal.node=${jbossportal.home}/server/default
jbossportal.lib=${jbossportal.node}/deploy/jboss-portal.sar/lib

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You may download these sources from Xantorohara.blogspot.com samples