Portlet Communication and passing parameters

[nisreen hyari]

i am facing the following problem, and i really need your help
I am developing a portlet application using RAD 7.5, on IBM portal 6.1, JSR 286
I have a list of services, each service is displayed as a link on Portlet A, when the user clicks any Link, i must go to another Portlet B where i also need the ID of the selected service, i am done with the navigation part but i am unable to get the serviceID in Portlet B (can any one help me in this), i really need a way to call a server method on user click where i can put the service id in the portletSession, but i don't know how to do this when using <hxutputLinkEx >, i tried to use <h:commandLink> but the navigation is no longer working
the following is the JSF page containing the links

 
<f:view>
<hx:scriptCollector id="scriptCollector1">
<h:form id="servicesList">
		<h:dataTable value="#{LookupsManagedBean.services}" var="serviceItem" >
			<h:column>
				<hx:outputLinkEx value="#{ServicesHomeBean.loginURL}">
					<h:outputText id="serviceLink" value="#{serviceItem.label}"></h:outputText>
					<f:param name="serviceID" value="#{serviceItem.value}"/>
				</hx:outputLinkEx>
			</h:column>
		</h:dataTable>		
	</h:form>
</hx:scriptCollector>
</f:view>

and the code where the URL is generated ServicesHomeBean.java

  
public class ServicesHomeBean extends GenericPortlet{
	private static PortalStateManagerServiceHome psmServiceHome;
	private static final String PSM_JNDI_NAME =  "portal:service/state/PortalStateManager";

	private String loginURL;
	public String getLoginURL() {
		String pageId = WebConstants.LOGIN_PAGE_ID;
		EngineURL engineURL = getRedirectURL(FacesContext.getCurrentInstance().getExternalContext(), pageId);
		return engineURL.toString();
		
	}
	public void setLoginURL(String loginURL) {
		this.loginURL = loginURL;
	}
	
	private synchronized static PortalStateManagerServiceHome getPSMServiceHome() {
		if (psmServiceHome == null) {
			try {
				final Context ctx = new InitialContext();
				psmServiceHome =(PortalStateManagerServiceHome) ctx.lookup(PSM_JNDI_NAME);
			} catch (Exception e) {
				return null;
			}
		}
		return psmServiceHome;
	}
	
	private EngineURL getRedirectURL(ExternalContext context, String pageID) {
		try {
			if(pageID == null) return null;
			
			// get the request-specific service from our home interface
			final StateManagerService service
			= getPSMServiceHome().getPortalStateManagerService((HttpServletRequest)context.getRequest() , (HttpServletResponse)context.getResponse());
			
			// get the needed factories
			final URLFactory urlFactory = service.getURLFactory();
			final SelectionAccessorFactory selFct = (SelectionAccessorFactory) 
			service.getAccessorFactory(SelectionAccessorFactory.class);
			try {
				// get a new URL from the URL factory
				final EngineURL url = urlFactory.newURL(null);
				url.setProtected(Boolean.TRUE);
				// get a selection controller which operates on the
				// URL-specific state
				final SelectionAccessorController selCtrl = 
					selFct.getSelectionAccessorController(url.getState());
				try {
					// change the selection
					selCtrl.setSelection(pageID);
					return url;
				} finally {
					selCtrl.dispose();
				}
			} finally {
				urlFactory.dispose();
				// indicate that we do not need it any longer
				service.dispose();
			}
		} catch (Exception e) {
			return null;
		}
	}
}

i even tried to use events but the processAction method is not getting called at all!!!
please any ideas..........

[Cameron Wallace McKenzie]

Are the portlets part of the same war file?

Portlets in the same war can share information through the Application Scope of the PortletSession. If not, you'll need to use another communication device OUTSIDE of JSR168, as portlets outside of a common war file have no inherent communication mechanism. This is true for Servlets and JSPs in non-portlet applications as well.

An IBM PortletService or even using common database tables can be used to achieve this.

-Cameron McKenzie

[nisreen hyari]

yes they are part of the same war, my problem is that i need a way to put the "serviceID" parameter inside the portlet session when the user click the link