Need IPC Sample

[ganeshraja]

I need Inter Portlet Communication portlet sample for JBoss Portal 2.6 GA version..

[theute]

Use the event mechanism, there is an example in the documentation.

[ganeshraja]

I am getting error for the following code refered from reference document.

PortletA.java

package sample;

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

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


public class PortletA extends GenericPortlet
{
 protected void doView(RenderRequest request, RenderResponse response)
 throws PortletException, PortletSecurityException, IOException
 {
 response.setContentType("text/html");
 PrintWriter writer = response.getWriter();
 writer.println("<form action=\"" + response.createActionURL() + "\" method=\"post\">");
 writer.println("<select name=\"color\">");
 writer.println("<option>blue</option>");
 writer.println("<option>red</option>");
 writer.println("<option>black</option>");
 writer.println("</select>");
 writer.println("<input type=\"submit\"/>");
 writer.println("</form>");
 writer.close();
 }
}

PortletB.java

package sample;

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

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 org.jboss.portlet.PortalNode;
import org.jboss.portlet.event.node.PortalNodeEvent;
import org.jboss.portlet.event.node.PortalNodeEventBubbler;
import org.jboss.portlet.event.node.PortalNodeEventListener;
import org.jboss.portlet.event.node.WindowActionEvent;

public class PortletB extends GenericPortlet
{

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

 protected void doView(RenderRequest request, RenderResponse response)
 throws PortletException, PortletSecurityException, IOException
 {
 String color = request.getParameter("color");
 response.setContentType("text/html");
 PrintWriter writer = response.getWriter();
 writer.println("<div" +
 (color == null ? "" : " style=\"color:" + color + ";\"") +
 ">some text in color</div>");
 writer.close();
 }

 // Inner listener
 public static class Listener implements PortalNodeEventListener
 {
 public PortalNodeEvent onEvent(PortalNodeEventBubbler bubbler, PortalNodeEvent event)
 {
 PortalNode node = event.getNode();
 // Get node name
 String nodeName = node.getName();
 // See if we need to create a new event or not
 WindowActionEvent newEvent = null;
 if (nodeName.equals("PortletAWindow") && event instanceof WindowActionEvent)
 {
 // Find window B
 WindowActionEvent wae = (WindowActionEvent)event;
 PortalNode windowB = node.resolve("../PortletBWindow");
 if (windowB != null)
 {
 // We can redirect
 newEvent = new WindowActionEvent(windowB);
 newEvent.setParameters(wae.getParameters());
 // Redirect to the new event
 return newEvent;
 }
 }
 // Otherwise bubble up
 return bubbler.dispatch(event);
 }
 }

}

Portlet.xml

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

 <portlet>
 <portlet-name>IPCPortletA</portlet-name>
 <portlet-class>sample.PortletA</portlet-class>
 <supports>
 <mime-type>text/html</mime-type>
 <portlet-mode>VIEW</portlet-mode>
 </supports>
 <portlet-info>
 <title>IPC Portlet A</title>
 </portlet-info>
 </portlet>
 <portlet>
 <portlet-name>IPCPortletB</portlet-name>
 <portlet-class>sample.PortletB</portlet-class>
 <supports>
 <mime-type>text/html</mime-type>
 <portlet-mode>VIEW</portlet-mode>
 </supports>
 <portlet-info>
 <title>IPC Portlet B</title>
 </portlet-info>
 </portlet>

</portlet-app>

Exception

org.jboss.portal.portlet.container.PortletInitializationException: The portlet IPCPortletA threw a runtime exception during init
 at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.start(PortletContainerImpl.java:264)
 at org.jboss.portal.portlet.impl.container.PortletApplicationContextImpl.startPortletApplication(PortletApplicationContextImpl.java:130)
 at org.jboss.portal.portlet.deployment.jboss.PortletAppDeployment.start(PortletAppDeployment.java:153)
 at org.jboss.portal.core.deployment.jboss.PortletAppDeployment.start(PortletAppDeployment.java:94)
 at org.jboss.portal.server.deployment.jboss.DeploymentContext.start(DeploymentContext.java:99)
 at org.jboss.portal.server.deployment.jboss.PortalDeploymentInfoContext.start(PortalDeploymentInfoContext.java:211)
 at org.jboss.portal.server.deployment.jboss.ServerDeployer.start(ServerDeployer.java:217)
 at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
 at sun.reflect.GeneratedMethodAccessor194.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy194.deploy(Unknown Source)
 at org.jboss.portal.server.deployment.jboss.ServerDeployer.deploy(ServerDeployer.java:259)
 at org.jboss.portal.server.deployment.WebAppAdapter.deploy(WebAppAdapter.java:54)
 at org.jboss.portal.server.deployment.WebAppIntercepter.handleNotification(WebAppIntercepter.java:160)
 at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.notification.NotificationListenerProxy.invoke(NotificationListenerProxy.java:153)
 at $Proxy197.handleNotification(Unknown Source)
 at org.jboss.mx.util.JBossNotificationBroadcasterSupport.handleNotification(JBossNotificationBroadcasterSupport.java:127)
 at org.jboss.mx.util.JBossNotificationBroadcasterSupport.sendNotification(JBossNotificationBroadcasterSupport.java:108)
 at org.jboss.deployment.SubDeployerSupport.emitNotification(SubDeployerSupport.java:340)
 at org.jboss.deployment.SubDeployerSupport.start(SubDeployerSupport.java:308)
 at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:482)
 at sun.reflect.GeneratedMethodAccessor256.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
 at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
 at org.jboss.ws.integration.jboss.DeployerInterceptor.start(DeployerInterceptor.java:92)
 at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
 at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy177.start(Unknown Source)
 at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
 at sun.reflect.GeneratedMethodAccessor117.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy8.deploy(Unknown Source)
 at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
 at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
 at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
 at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
 at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)
 Caused by: java.lang.ClassCastException: sample.PortletA
 at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.start(PortletContainerImpl.java:231)
 ... 73 more
 org.jboss.portal.portlet.container.PortletInitializationException: The portlet IPCPortletB threw a runtime exception during init
 at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.start(PortletContainerImpl.java:264)
 at org.jboss.portal.portlet.impl.container.PortletApplicationContextImpl.startPortletApplication(PortletApplicationContextImpl.java:130)
 at org.jboss.portal.portlet.deployment.jboss.PortletAppDeployment.start(PortletAppDeployment.java:153)
 at org.jboss.portal.core.deployment.jboss.PortletAppDeployment.start(PortletAppDeployment.java:94)
 at org.jboss.portal.server.deployment.jboss.DeploymentContext.start(DeploymentContext.java:99)
 at org.jboss.portal.server.deployment.jboss.PortalDeploymentInfoContext.start(PortalDeploymentInfoContext.java:211)
 at org.jboss.portal.server.deployment.jboss.ServerDeployer.start(ServerDeployer.java:217)
 at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
 at sun.reflect.GeneratedMethodAccessor194.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy194.deploy(Unknown Source)
 at org.jboss.portal.server.deployment.jboss.ServerDeployer.deploy(ServerDeployer.java:259)
 at org.jboss.portal.server.deployment.WebAppAdapter.deploy(WebAppAdapter.java:54)
 at org.jboss.portal.server.deployment.WebAppIntercepter.handleNotification(WebAppIntercepter.java:160)
 at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.notification.NotificationListenerProxy.invoke(NotificationListenerProxy.java:153)
 at $Proxy197.handleNotification(Unknown Source)
 at org.jboss.mx.util.JBossNotificationBroadcasterSupport.handleNotification(JBossNotificationBroadcasterSupport.java:127)
 at org.jboss.mx.util.JBossNotificationBroadcasterSupport.sendNotification(JBossNotificationBroadcasterSupport.java:108)
 at org.jboss.deployment.SubDeployerSupport.emitNotification(SubDeployerSupport.java:340)
 at org.jboss.deployment.SubDeployerSupport.start(SubDeployerSupport.java:308)
 at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:482)
 at sun.reflect.GeneratedMethodAccessor256.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
 at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
 at org.jboss.ws.integration.jboss.DeployerInterceptor.start(DeployerInterceptor.java:92)
 at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
 at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy177.start(Unknown Source)
 at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
 at sun.reflect.GeneratedMethodAccessor117.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
 at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
 at $Proxy8.deploy(Unknown Source)
 at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
 at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
 at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
 at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
 at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)
 Caused by: java.lang.ClassCastException: sample.PortletB
 at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.start(PortletContainerImpl.java:231)
 ... 73 more

[theute]

Do you have portlet-api-lib.jar in your war ? In case you do please remove it.

[ganeshraja]

which are the required .jar files for this sample?

[habicht]

all necessary libs are located in /JBOSS_HOME/default/deploy/jboss-portal.sar/lib

another question. are there any steps to do to get the portletA/portletB-example running that aren't mentioned in the reference manual? i tried exactly according to the example but all i got was an exception because of the used actionulr in portleta which doesn't override the processAction methode (i think this was the problem because after i implemented an emty processAction the exception was gone).

[theute]

Yes some info was missing, sorry about this.
I updated the chapter it should be built and available soon online, i'll let you know.

[theute]

Done:
http://dev45.qa.atl.jboss.com:8585/hudson/job/jboss-portal-nightly-doc/lastSuccessfulBuild/artifact/daily-doc/referenceGuide/html/portalapi.html

Thanks

[prabhat.jha]

Hi Guys,

The URL that Thomas posted works inside vpn only. For public, replace the machine name with hudson.jboss.org. Here you go:

https://hudson.jboss.org/hudson/view/JBoss%20Portal/job/jboss-portal-nightly-doc/lastSuccessfulBuild/artifact/daily-doc/referenceGuide/html/portalapi.html

Cheers,
Prabhat

[prabhat.jha]

Or this one is a bit shorter.

http://hudson.jboss.org/hudson/job/jboss-portal-nightly-doc/lastSuccessfulBuild/artifact/daily-doc/

[theute]

i update the wiki, ty prabhat !

[habicht]

does that code example from the link 2 posts above work for Portal 2.6? do i have to create a jboss-service.xml, if yes where, or do i have to copy this mbean-code into an existing file?

[habicht]

i would like to repeat my questions from the post above.

does that code example from the link 2 posts above work for Portal 2.6? do i have to create a jboss-service.xml, if yes where, or do i have to copy this mbean-code into an existing file?

[theute]

The doc says you need to reference your listerner as an mbean. So if you don't have one already create a sar file with a jboss-service.xml file

[ruchika]

I am still facing the below problem.
I was getting no class loader error when i was trying to deploy my war.
I created the jar of classes and have put in class path.
Now I am facing the below error.
I am using jboss-portal-2.6.4.

Any help will be greatly appreciated.

Regards,
Ruchika