Navigation and Creating a navigation rule at runtime

Question

Hi all,
How can I create a navigation rule at runtime?
I got all my pages (names and locations) stored in a database table.All my pages are jspx format.
I don't want to create navigation rules for each page, Instead I want to use the location stored in the database and create a navigation rule to navigate to.
I tried navigating using ServletRequest :
        ExternalContext ectx = FacesContext.getCurrentInstance().getExternalContext();
        HttpServletResponse response = (HttpServletResponse)ectx.getResponse();
        HttpServletRequest  request = (HttpServletRequest)ectx.getRequest();
        request.getRequestDispatcher("/faces/Titles.jspx").forward(request,response);But it blows after the first call.
is it possible to create a navigation rule in a Bean or is there another way to call jspx pages from a Bean without loosing the session.
Can someone help me please.
thanks in advance,
Ahmad Esbita

Answer 1

Ahmad,
I don't know of any way to programatically create navigation cases at runtime. However, perhaps you could try creating a NavigationHandler decorator. Let's assume you have a function called "getViewIDforAction" that does the database lookup and returns the view ID for a given action code. You could do something like this:
package my.code;
import javax.faces.application.NavigationHandler;
import javax.faces.context.FacesContext;
public class MyNavigationManager extends NavigationHandler
   NavigationHandler _base;
   public NavigationManager (NavigationHandler base)
      super();
      _base = base;
   public void handleNavigation(FacesContext fc, String actionMethod, String actionName)
      String viewID = getViewIDforAction(actionName);
      if (viewID != null && ! "".equals(viewID))
         fc.getViewRoot().setViewId(viewID);
      else
         _base.handleNavigation(fc, actionMethod, actionName);
}You'll also need this in faces-config.xml:
<application>
  <navigation-handler>my.code.MyNavigationManager</navigation-handler>
...any other stuff...
</application>Note: I haven't tested this or anything - just to give you an idea...
Regards,
john