But what if you want to create a URL from inside a portlet to other portal page, WPS provides PortletStateManagerService, that you can use from inside the portlet to create URL to other portal pages. I wanted to learn how it works so i built a sample portlet that can be used to ful-fill different use cases, you can download that sample portlet from here
package com.webspherenots.popup;
import java.io.IOException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.PortletMode;
import javax.portlet.PortletRequest;
import javax.portlet.PortletResponse;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.WindowState;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ibm.portal.portlet.service.PortletServiceHome;
import com.ibm.portal.state.EngineURL;
import com.ibm.portal.state.PortletStateManager;
import com.ibm.portal.state.URLFactory;
import com.ibm.portal.state.accessors.exceptions.CannotInsertSelectionNodeException;
import com.ibm.portal.state.accessors.exceptions.MissingUniqueNameException;
import com.ibm.portal.state.accessors.exceptions.StateNotInRequestException;
import com.ibm.portal.state.accessors.exceptions.UnknownUniqueNameException;
import com.ibm.portal.state.accessors.portlet.PortletAccessorController;
import com.ibm.portal.state.accessors.portlet.PortletAccessorFactory;
import com.ibm.portal.state.accessors.portlet.PortletTargetAccessorController;
import com.ibm.portal.state.accessors.portlet.PortletTargetAccessorFactory;
import com.ibm.portal.state.accessors.selection.SelectionAccessorController;
import com.ibm.portal.state.accessors.selection.SelectionAccessorFactory;
import com.ibm.portal.state.accessors.solo.SoloAccessorController;
import com.ibm.portal.state.accessors.solo.SoloAccessorFactory;
import com.ibm.portal.state.accessors.themetemplate.ThemeTemplateAccessorController;
import com.ibm.portal.state.accessors.themetemplate.ThemeTemplateAccessorFactory;
import com.ibm.portal.state.accessors.url.URLAccessorFactory;
import com.ibm.portal.state.exceptions.CannotCloneDocumentModelException;
import com.ibm.portal.state.exceptions.CannotCreateDocumentException;
import com.ibm.portal.state.exceptions.CannotInstantiateAccessorException;
import com.ibm.portal.state.exceptions.CannotInstantiateURLFactoryException;
import com.ibm.portal.state.exceptions.InvalidConstantException;
import com.ibm.portal.state.exceptions.StateManagerException;
import com.ibm.portal.state.exceptions.UnknownAccessorTypeException;
import com.ibm.portal.state.service.PortletStateManagerService;
public class PortletStateManagerServicePortlet extends GenericPortlet {
PortletStateManagerService portletStateManagerService;
public void init() throws PortletException {
System.out.println("Entering PortletStateManagerServiceHome.init()");
try {
InitialContext context = new InitialContext();
final PortletServiceHome serviceHome = (PortletServiceHome) context
.lookup("portletservice/com.ibm.portal.state.service.PortletStateManagerService");
portletStateManagerService = (PortletStateManagerService) serviceHome
.getPortletService(PortletStateManagerService.class);
} catch (NamingException e) {
e.printStackTrace(System.out);
}
System.out.println("Exiting PortletStateManagerServiceHome.init()");
}
protected void doView(RenderRequest request, RenderResponse response)
throws PortletException, IOException {
System.out.println("Entering PortletStateManagerServiceHome.doView()");
response.setContentType("text/html");
String portalPageURL = getPortalPageURL(request, response);
request.setAttribute("portalPageURL", portalPageURL);
String portletRenderURL = getPortletRenderURLWithParams(request, response);
request.setAttribute("portletRenderURL", portletRenderURL);
String soloStateURL = getPortletSoloStateURL(request, response);
request.setAttribute("soloStateURL", soloStateURL);
String actionURL = getPortletActionURL(request, response);
request.setAttribute("actionURL", actionURL);
String editModeURL = getEditModeMaximizedURL(request,response);
request.setAttribute("editModeURL", editModeURL);
String themeURL = getDifferentThemeURL(request, response);
request.setAttribute("themeURL", themeURL);
getPortletContext().getRequestDispatcher("/index.jsp").include(request,
response);
System.out.println("Exiting PortletStateManagerServiceHome.doView()");
}
private String getPortalPageURL(PortletRequest request,
PortletResponse response) {
PortletStateManager portletStateManager = null;
try {
portletStateManager = portletStateManagerService
.getPortletStateManager(request, response);
final URLFactory urlFct = portletStateManager.getURLFactory();
final EngineURL url = urlFct.newURL(null);
final SelectionAccessorFactory selectionAccessorFactory = portletStateManager
.getAccessorFactory(SelectionAccessorFactory.class);
SelectionAccessorController selectionAccessorCOntroller = selectionAccessorFactory
.getSelectionController(url.getState());
selectionAccessorCOntroller
.setSelection("com.webspherenotes.popup.static");
String finalURL = url.toString();
System.out.println("Portal Page URL " + finalURL);
return finalURL;
} catch (StateManagerException e) {
e.printStackTrace(System.out);
} catch (UnknownAccessorTypeException e) {
e.printStackTrace(System.out);
} catch (CannotInstantiateAccessorException e) {
e.printStackTrace(System.out);
} catch (InvalidConstantException e) {
e.printStackTrace(System.out);
} catch (CannotCloneDocumentModelException e) {
e.printStackTrace(System.out);
} catch (CannotCreateDocumentException e) {
e.printStackTrace(System.out);
} catch (StateNotInRequestException e) {
e.printStackTrace(System.out);
} catch (CannotInsertSelectionNodeException e) {
e.printStackTrace(System.out);
} catch (MissingUniqueNameException e) {
e.printStackTrace(System.out);
} catch (UnknownUniqueNameException e) {
e.printStackTrace(System.out);
} catch (CannotInstantiateURLFactoryException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (portletStateManager != null)
portletStateManager.dispose();
}
return null;
}
}
The PortletStateManagerServicePortlet.java has a getPortalPageURL() method, that is using SelectionAccessorFactory, for creating a URL to portal page, with unique name equal to
com.webspherenotes.popup.static
This is same as that of the In the Creating Portal/Portlet URL from outside the portal, with the difference that i am using PortletStateManagerService from inside the portlet instead of PortalStateManagerService from servlet
3 comments:
Hi Sunil,
Which is better from perfoamcne perspective, doView or doEdit ?
Hi,
When I click Page Properties in Edit Mode for WPS 9 , I see the below exception :
com.ibm.portal.state.accessors.exceptions.UnknownUniqueNameException
[15/3/18 13:26:48:781 IST] 00000160 ExceptionLogg 2 com.ibm.wps.logging.ExceptionLogger logThrowable Exception
com.ibm.portal.state.accessors.exceptions.UnknownUniqueNameException: EJPEI0158E: The unique name [com.ibm.wps.portlet.pageproperties.Portlet.window] is unknown and cannot be mapped to an ObjectID.
I enabled logging as well :
[15/3/18 11:07:21:281 IST] 000001bc ExceptionLogg W com.ibm.wps.logging.ExceptionLogger logThrowable An exception occurred: [EJPEI0158E: The unique name [com.ibm.wps.portlet.pageproperties.Portlet.window] is unknown and cannot be mapped to an ObjectID.]. Enable traces for [com.ibm.wps.logging.ExceptionLogger=all] to see the exception stack trace.
[15/3/18 11:07:21:282 IST] 000001bc ResolvedPrepr I com.ibm.wps.resolver.portal.ResolvedPreprocessor process The resolution process failed, for more details enable tracing for [com.ibm.wps.resolver.portal.ResolvedPreprocessor=all].
Kindly let me know how to fix.
I tried looking for the entry in Manage Pages with search Category : Unique Name Contains but did not find the result in my search as well..
Thanks for info
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