Qi4j forum sample rest client test

ForumClient.java

public class ForumClient
{
    private ContextResourceClient crc;

    private final Module module;

    private String username = "rickard";
    private String password = "secret";

    public ForumClient() throws AssemblyException
    {

        Energy4Java is = new Energy4Java(  );
        Application app = is.newApplication( new ApplicationAssembler()
        {
            @Override
            public ApplicationAssembly assemble(ApplicationAssemblyFactory applicationFactory) throws AssemblyException
            {
                ApplicationAssembly assembly = applicationFactory.newApplicationAssembly();
                ForumClient.this.assemble(assembly);
                return assembly;
            }

        });

        Client client = new Client( Protocol.HTTP );

        module = app.findModule("Client", "REST");
        ContextResourceClientFactory contextResourceClientFactory = module.newObject(ContextResourceClientFactory.class, client);
        contextResourceClientFactory.setAcceptedMediaTypes( MediaType.APPLICATION_JSON );

        contextResourceClientFactory.setErrorHandler( new ErrorHandler().onError( ErrorHandler.AUTHENTICATION_REQUIRED, new ResponseHandler()
        {
            boolean tried = false;

            @Override
            public HandlerCommand handleResponse( Response response, ContextResourceClient client )
            {
                if (tried)
                    throw new ResourceException( response.getStatus() );

                tried = true;
                client.getContextResourceClientFactory().getInfo().setUser( new User(username, password) );
                System.out.println("authenticating as: " + username);
                // Try again
                return refresh();
            }
        } ).onError( ErrorHandler.RECOVERABLE_ERROR, new ResponseHandler()
        {
            @Override
            public HandlerCommand handleResponse( Response response, ContextResourceClient client )
            {
                // Try to restart
                return refresh();
            }
        } ) );

        Reference ref = new Reference( "http://localhost:8888/" );
        crc = contextResourceClientFactory.newClient( ref );
    }

    private void assemble(ApplicationAssembly assembly) throws AssemblyException
    {
        LayerAssembly client = assembly.layer("Client");
        ModuleAssembly module = client.module("REST");

        // General setup of client
        new ClientAssembler().assemble( module );
        new ValueAssembler().assemble( module );

        // Forum
        module.values( Registration.class);
    }

    List<Link> rootResources() {
        final List<Link> resources = new ArrayList<Link>();
        crc.onResource( new ResultHandler<Resource>()
        {
            @Override
            public HandlerCommand handleResult(Resource result, ContextResourceClient client)
            {
                resources.addAll(result.resources().get());
                return null;
            }
        });

        crc.start();
        return resources;
    }

    void signupNewUser() throws Exception
    {
        crc.newClient( "signup/").onResource(new ResultHandler<Resource>()
        {
            @Override
            public HandlerCommand handleResult(Resource result, ContextResourceClient client)
            {
                ValueBuilder<Registration> vb = module.newValueBuilder(Registration.class);
                vb.prototype().name().set(username);
                vb.prototype().realName().set(" ");
                vb.prototype().email().set("nomail@nomail.com");
                vb.prototype().password().set(password);

                return command("signup", vb.newInstance()).onSuccess(new ResultHandler<Object>()
                {
                    @Override
                    public HandlerCommand handleResult(Object result, ContextResourceClient client)
                    {
                        System.out.println( "signup: " +  username );
                        return null;
                    }
                });
            }
        }).start();
    }

    void adminListUsers() throws Exception
    {
        crc.newClient("administration/users/").onResource( new ResultHandler<Resource>()
        {
            @Override
            public HandlerCommand handleResult(Resource result, ContextResourceClient client)
            {
                return query("index");
            }
        }).onQuery("index", new ResultHandler<Object>()
        {
            @Override
            public HandlerCommand handleResult(Object result, ContextResourceClient client)
            {
                return null;
            }
        })
        .start();

    }

    public static void main( String[] args )
            throws Exception
    {
        ForumClient client = new ForumClient();

        // root resource links
        List<Link> links = client.rootResources();
        for (Link link : links) {
            System.out.println("root resource: " + link.rel());
        }

        // register new user
        client.signupNewUser();

        // TODO: failure, UsersResource.index() handler missing ( Query type)
        client.adminListUsers();

    }
}