Code example for Invokable

Methods: getReturnType, getAnnotation, isAnnotationPresent

0
   @VisibleForTesting 
   @SuppressWarnings({ "rawtypes", "unchecked" }) 
   public Function<HttpResponse, ?> getTransformerForMethod(Invocation invocation, Injector injector) {
      Invokable<?, ?> invoked = invocation.getInvokable();
      Function<HttpResponse, ?> transformer;
      if (invoked.isAnnotationPresent(SelectJson.class)) {
         Type returnVal = getReturnTypeFor(invoked.getReturnType());
         if (invoked.isAnnotationPresent(OnlyElement.class))
            returnVal = newParameterizedType(Set.class, returnVal);
         transformer = new ParseFirstJsonValueNamed(injector.getInstance(GsonWrapper.class),
               TypeLiteral.get(returnVal), invoked.getAnnotation(SelectJson.class).value());
         if (invoked.isAnnotationPresent(OnlyElement.class))
            transformer = compose(new OnlyElementOrNull(), transformer);
      } else { 
         transformer = injector.getInstance(getParserOrThrowException(invocation));
      } 
      return transformer;
   } 
 
   static Class<? extends HandlerWithResult<?>> getSaxResponseParserClassOrNull(Invokable<?, ?> invoked) {
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