sw-samuraj

public class PersonPanel extends Panel implements Observer {

    @SpringBean
    private ObservableCache observableCache;

    public PersonPanel(String id) {
        super(id);
        // Wicket component stuff, e.g. children
        
        setDefaultModel(new CompoundPropertyModel<>(getModel()));

sw-samuraj

public class PersonPanel extends Panel implements Observer {

    public PersonPanel(String id) {
        // Wicket stuff omitted.

        observableCache.addObserver(this);
    }
    
    @Override
    public void update(Observable observable, Object o) {

sw-samuraj

public class ObservableCache extends Observable {

    private Map<String, PersonInfo> cache = new HashMap<>();

    public void put(String key, PersonInfo person) {
        cache.put(key, person);
        setChanged();
        notifyObservers();
    }

sw-samuraj

@Resource(name = "userCache")
private Map<User, Id> userCache;

private UserStats getUser(String userID) {
    String login = userCache
            .entrySet()
            .stream()
            .filter(u -> userID.equals(u.getValue().getId()))
            .map(u -> u.getKey().getLogin())
            .collect(Collectors.joining());

sw-samuraj

@Configuration
@ComponentScan("cz.swsamuraj.wicketspring")
public class SpringRestConfiguration {

    @Bean
    public AnnotationMethodHandlerAdapter annotationMethodHandlerAdapter() {
        AnnotationMethodHandlerAdapter adapter = new AnnotationMethodHandlerAdapter();
        HttpMessageConverter<?>[] converters = { new MappingJackson2HttpMessageConverter()};
        adapter.setMessageConverters(converters);

sw-samuraj

@Component
public class WicketApplication extends WebApplication {

    @Override
    protected void init() {
        super.init();

        WebApplicationContext ctx = WebApplicationContextUtils
            .getRequiredWebApplicationContext(getServletContext());
        getComponentInstantiationListeners().add(new SpringComponentInjector(this, ctx));

sw-samuraj

@WebFilter(value = "/*",
    initParams = {
        @WebInitParam(name = "applicationFactoryClassName",
                      value = "org.apache.wicket.spring.SpringWebApplicationFactory")
    })
public class WicketAppFilter extends JavaxWebSocketFilter {
}

sw-samuraj

(defn wrap-put-no-content
  "Middleware that returns a 204 No Content
  if the request method is PUT, otherwise
  a 405 Method Not Allowed."
  [handler]
  (-> handler
      (wrap-no-content)
      (wrap-put-allowed)))

sw-samuraj

(defn wrap-no-content
  "Middleware that returns a 204 No Content
  from the wrapped handler."
  [handler]
  (fn [request]
    (let [response (handler request)]
      (-> response
          (assoc :status 204)
          (dissoc :body)))))

sw-samuraj

; "Classical" middleware wrapping
(middleware-3 (middleware-2 (middleware-1 handler)))

; Middleware wrapping via threading macro
(-> handler (middleware-1) (middleware-2) (middleware-3))