How can I make a navigation dependend on the database content with JSF?

Question

Hi,
I want to navigate dynamicly between pages, but pages which addresses that are taken from database. I want to take a list of page's addresses (links) from database, and while application is running, I want to generate on my page that working links. This is functionality demanded by my little CMS (Content Management System), to enable me to add and delete pages and links between them.
But is it possible by JSF?
As far as I could find out, JSF provides such possibilities (faces-config.xml) :
<navigation-rule>
    <from-view-id>/logon.jsp</from-view-id>
         <navigation-case>
              <from-action>#{LogonForm.logon}</from-action> /*logon - function returning String as an 'outcome'*/
               <from-outcome>success</from-outcome> /*outcome*/
                <to-view-id>/storefront.jsp</to-view-id> /*concrete page*/
           </navigation-case>I need something like that:
<navigation-rule>
    <from-view-id>/logon.jsp</from-view-id>
       <navigation-case>
          <from-action>#{WhichPage.address</from-action> /*different pages' addresses
           <from-outcome></from-outcome> /*outcome not needed*/
           <to-view-id>#{WhichPage.address}</to-view-id>  //different pages' addresses from db
       </navigation-case>or just function which return directly the address of the target page (read from db). But is it possbile with JSF?
So far only figured out one not good enough way: to add all the pages' addresses to the faces-config.xml file:( But as you can imagine, the more link I would add, the bigger mess in config file I would create.
Thanks in advance for any suggestion or advice,
Regards.
T.K.

Answer 1

You can implement a NavigationHandler
public class NavigationManager extends NavigationHandler {
     private NavigationHandler _base;
     public NavigationManager(NavigationHandler base)
          super();
          _base = base;      
     public void handleNavigation(FacesContext context, String actionMethod, String actionName) {
          // Put some code here, you can create a NavigationCase and a NavigationRule
          // with RuntimeConfig runtimeConfig = RuntimeConfig.getCurrentInstance(externalContext);
          _base.handleNavigation(context, actionMethod, actionName);
}