That being the case, is there any way to get an instance that I can cast to a concrete type?
On Tue, Jul 23, 2013 at 9:27 AM, Martin Grigorov <mgrigo...@apache.org>wrote: > Hi, > > > On Tue, Jul 23, 2013 at 6:20 PM, Daniel Watrous <dwmaill...@gmail.com > >wrote: > > > Hi, > > > > I'm having an issue that I suspect is related to the wicket integration > > with Guice. Any help is appreciated. > > > > I have a Page class that uses field injection to inject a DAO. I then > want > > to cast my DAO to a more specific type (what I inject is the interface). > > Here's what that looks like > > > > public class CnavModify extends ConsoleBasePage { > > > > @Inject private CnavUrlDAO cnavUrlDAO; > > public CnavModify(PageParameters parameters) { > > super(parameters); > > if (parameters.get("cnavid").toString() != null) { > > cnavid = new ObjectId(parameters.get("cnavid").toString()); > > } > > if (cnavid != null) { > > cnavUrlModel = new > > > > > DetachableCnavUrlModel(((MorphiaCnavUrlDAO)cnavUrlDAO).getCnavById(cnavid)); > > } > > } > > } > > > > When I try to cast it I get the following error: > > > > Last cause: $Proxy23 cannot be cast to > > com.hp.honeybadger.persistence.dao.morphia.MorphiaCnavUrlDAO > > > > I am able to use the CnavUrlDAO as a CnavUrlDAO, but its type is $Proxy23 > > and I am unable to cast it to a concrete type. > > > > Is this Guice or Wicket related? Any idea how to get around this? > > > > It is an error in your assumption. > > Wicket injects a proxy that implements CnavUrlDAO but knows nothing about > the specific implementation about this interface. > Whenever the proxy is used it delegates the call to the bean/service > returned by Guice's injector (something like: > Injector.getBinding(CnavUrlDAO.class).doSomething()). > > > > > > Thanks, > > Daniel > > >