Adding portlets to page on the fly

In the Creating portal pages on the fly, i talked about how you can create a portal page dynamically and redirect it to that page.

The DynamicUICtrl, has a addPortlet() methdo that you can use for adding portlet to page on the fly so i built this sample portlet to add com.webspherenotes.popup.portlet on the fly but it does not work

package com.webspherenotes.portlet;

import java.io.IOException;

import javax.naming.CompositeName;
import javax.naming.InitialContext;
import javax.naming.InvalidNameException;
import javax.naming.Name;
import javax.naming.NamingException;
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 com.ibm.portal.ObjectID;
import com.ibm.portal.dynamicui.DynamicUICtrl;
import com.ibm.portal.dynamicui.DynamicUIManagementException;
import com.ibm.portal.portlet.service.PortletServiceHome;
import com.ibm.portal.portlet.service.dynamicui.DynamicUIManagementFactoryService;
import com.ibm.portal.portlet.service.state.RedirectURLGeneratorFactoryService;
import com.ibm.portal.state.EngineURL;
import com.ibm.portal.state.RedirectURLGenerator;
import com.ibm.portal.state.exceptions.StateException;

public class DynamicUIPortlet extends GenericPortlet {

  public static final String EXTENSION_PAGE_UNIQUENAME="com.webspherenotes.popup.extension";
  public static final String TEMPLATE_PAGE_UNIQUENAME="com.webspherenotes.popup.dynamic";
  public static final String TEMPLATE_PORTLET_UNIQUENAME = "com.webspherenotes.popup.portlet";
  
  public void processAction(ActionRequest request, ActionResponse response)
      throws PortletException, IOException {
    System.out.println("Entering DynamicUIPortlet.processAction()");

    try {
      RedirectURLGenerator redirectURLGenerator = redirectURLGeneratorService.getURLGenerator(request, response);
    
      DynamicUICtrl dynamicUIControl= dynamicUIManagerFactoryService.getDynamicUICtrl(request, response, EXTENSION_PAGE_UNIQUENAME);
      
      ObjectID templatePortletObjectId = getObjectID(TEMPLATE_PORTLET_UNIQUENAME);
      System.out.println("Template Portlet Object Id " + templatePortletObjectId);
      
      ObjectID dynamicPortletObjectId = dynamicUIControl.addPortlet(templatePortletObjectId, new LocalizedImpl("Dynamic page", "Dynamic page demo"), null);
      
      System.out.println("Lauch portlet object id " + dynamicPortletObjectId);
      if(dynamicPortletObjectId == null)
        return;
      
      EngineURL dynamicPageURL = redirectURLGenerator.createPortletURL(dynamicPortletObjectId);
      String  dynamicPageURLStr = dynamicPageURL.toString();

      System.out.println("Dynamic Page URL " + dynamicPageURLStr);
      response.sendRedirect(dynamicPageURLStr);
    } catch (DynamicUIManagementException e) {
      e.printStackTrace(System.out);
    } catch (StateException e) {
      e.printStackTrace(System.out);
    }
    System.out.println("Exiting DynamicUIPortlet.processAction()");
  }

  protected void doView(RenderRequest request, RenderResponse response)
      throws PortletException, IOException {
    System.out.println("Entering DynamicUIPortlet.doView()");
    getPortletContext().getRequestDispatcher("/index.jsp").include(request, response);
    System.out.println("Exiting DynamicUIPortlet.doView()");
  }

  RedirectURLGeneratorFactoryService redirectURLGeneratorService;
  DynamicUIManagementFactoryService dynamicUIManagerFactoryService;

  public void init() throws PortletException {
    System.out.println("ENtering DynamicUIPortlet.init()");
    try {
      InitialContext ctx = new InitialContext();
      final PortletServiceHome dynamicUIManagerFactoryServiceHome = (PortletServiceHome) ctx
          .lookup("portletservice/com.ibm.portal.portlet.service.dynamicui.DynamicUIManagementFactoryService");
      dynamicUIManagerFactoryService = (DynamicUIManagementFactoryService) dynamicUIManagerFactoryServiceHome
          .getPortletService(DynamicUIManagementFactoryService.class);

      final PortletServiceHome redirectServiceHome = (PortletServiceHome) ctx
          .lookup("portletservice/com.ibm.portal.portlet.service.state.RedirectURLGeneratorFactoryService");
      redirectURLGeneratorService = (RedirectURLGeneratorFactoryService) redirectServiceHome
          .getPortletService(RedirectURLGeneratorFactoryService.class);
    } catch (NamingException e) {
      e.printStackTrace(System.out);
    }
    System.out.println("Exiting DynamicUIPortlet.init()");
  }

  private ObjectID getObjectID(String uniqueNameStr) {
    try {
      InitialContext ctx = new InitialContext();
      final Name uniqueName = new CompositeName("portal:uniquename");
      uniqueName.add(uniqueNameStr);
      ObjectID oidForUniqueName = (ObjectID) ctx.lookup(uniqueName);
      return oidForUniqueName;
    } catch (InvalidNameException e) {
      e.printStackTrace(System.out);
    } catch (NamingException e) {
      e.printStackTrace(System.out);
    }
    return null;
  }
}

The dynamicUIControl.addPortlet(templatePortletObjectId, new LocalizedImpl("Dynamic page", "Dynamic page demo"), null) method always returns null, i tried quite few combination but they do not help, i saw few question on ibm developerworks forum where other developers are also facing some problem but it seems that we will have to open a PMR with IBM and see how it goes