Wicket 6 !continueToOriginalDestination: operator ! is undefined

Question

Situation

I'm migrating a project from Wicket 1.5.7 to Wicket 6.12, one of the errors I get is explained below.

Code

    @Override
    protected void onSubmit() {
          final String usernameValue = mail.getModelObject();
          //Password is left empty in this particular case
          AuthenticatedWebSession.get().signIn(usernameValue,"");
          if (!continueToOriginalDestination())
          {
            setResponsePage(getApplication().getHomePage());
          }
    }

Error

This is the error I got when changing wicket versions: The operator ! is undefined for the argument type(s) void

Note: I see this error when hovering over !continueToOriginalDestination

What did I try

In my search on stackoverflow I came accross this question: continueToOriginalDestination does not bring me back to originating page

Also checked this topic on apache wicket: http://apache-wicket.1842946.n4.nabble.com/Handling-ReplaceHandlerException-on-continueToOriginalDestination-in-wicket-1-5-td4101981.html#a4115437

So I changed my code to this:

    @Override
   public void onSubmit() {
       final String usernameValue = mail.getModelObject();
       AuthenticatedWebSession.get().signIn(usernameValue,"");
       setResponsePage(getApplication().getHomePage());
       throw new RestartResponseAtInterceptPageException(SignInPage.class);
   }

Question

The old situation nor the code change seem to work in my particular case.

• Maybe it's a small change, is my new code wrong, how should this work?
• Has Wicket changed that much, so that the old code is not supported anymore, or can !continueToOriginalDestination be used as well?

Answer 1

This helps

http://www.skybert.net/java/wicket/changes-in-wicket-after-1.5/

In 1.5, you could do the following to break out of the rendering of one page, go to another page (like login page) and then send the user back to where he/she was:

  public class BuyProductPage extends WebPage {
      public BuyProductPage() {
        User user = session.getLoggedInUser();
        if (user  null) {
          throw new RestartResponseAtInterceptPageException(LoginPage.class);
        }
      }
  }

and then in LoginPage.java have this to redirect the user back to BuyProductPage after he/she's logged in:

  public class LoginPage extends WebPage {
    public LoginPage() {
      // first, login the user, then check were to send him/her:
      if (!continueToOriginalDestination()) {
        // redirect the user to the default page.
        setResponsePage(HomePage.class);
      }
    }
  }

The method continueToOriginalDestination has changed in Wicket 6, it's now void which makes your code look more magic and less than logic IMO:

  public class LoginPage extends WebPage {
    public LoginPage() {
      // first, login the user, then check were to send him/her:
      continueToOriginalDestination();
      // Magic! If we get this far, it means that we should redirect the
      // to the default page.
      setResponsePage(HomePage.class);
    }
  }