Examples of org.springframework.beans.DirectFieldAccessor

org.springframework.beans.DirectFieldAccessor
{@link PropertyAccessor} implementation that directly accesses instance fields.Allows for direct binding to fields instead of going through JavaBean setters.
This implementation just supports fields in the actual target object. It is not able to traverse nested fields.
A DirectFieldAccessor's default for the "extractOldValueForEditor" setting is "true", since a field can always be read without side effects. @author Juergen Hoeller @since 2.0 @see #setExtractOldValueForEditor @see BeanWrapper @see org.springframework.validation.DirectFieldBindingResult @see org.springframework.validation.DataBinder#initDirectFieldAccess()

    ObjectMapper objectMapper = ((MappingJackson2HttpMessageConverter)adapter.getMessageConverters().get(0)).getObjectMapper();
    assertFalse(objectMapper.getDeserializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION));
    assertFalse(objectMapper.getSerializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION));
    assertFalse(objectMapper.getDeserializationConfig().isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));


    DirectFieldAccessor fieldAccessor = new DirectFieldAccessor(adapter);


    // Custom argument resolvers and return value handlers
    List<HandlerMethodArgumentResolver> argResolvers =
      (List<HandlerMethodArgumentResolver>) fieldAccessor.getPropertyValue("customArgumentResolvers");
    assertEquals(1, argResolvers.size());


    List<HandlerMethodReturnValueHandler> handlers =
      (List<HandlerMethodReturnValueHandler>) fieldAccessor.getPropertyValue("customReturnValueHandlers");
    assertEquals(1, handlers.size());


    // Async support options
    assertEquals(ConcurrentTaskExecutor.class, fieldAccessor.getPropertyValue("taskExecutor").getClass());
    assertEquals(2500L, fieldAccessor.getPropertyValue("asyncRequestTimeout"));


    CallableProcessingInterceptor[] callableInterceptors =
        (CallableProcessingInterceptor[]) fieldAccessor.getPropertyValue("callableInterceptors");
    assertEquals(1, callableInterceptors.length);


    DeferredResultProcessingInterceptor[] deferredResultInterceptors =
        (DeferredResultProcessingInterceptor[]) fieldAccessor.getPropertyValue("deferredResultInterceptors");
    assertEquals(1, deferredResultInterceptors.length);


    assertEquals(false, fieldAccessor.getPropertyValue("ignoreDefaultModelOnRedirect"));
  }

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  public void viewResolvers() throws Exception {
    ViewResolverComposite viewResolver = (ViewResolverComposite) this.config.mvcViewResolver();
    assertEquals(Ordered.HIGHEST_PRECEDENCE, viewResolver.getOrder());
    List<ViewResolver> viewResolvers = viewResolver.getViewResolvers();


    DirectFieldAccessor accessor = new DirectFieldAccessor(viewResolvers.get(0));
    assertEquals(1, viewResolvers.size());
    assertEquals(ContentNegotiatingViewResolver.class, viewResolvers.get(0).getClass());
    assertFalse((Boolean) accessor.getPropertyValue("useNotAcceptableStatusCode"));
    assertNotNull(accessor.getPropertyValue("contentNegotiationManager"));


    List<View> defaultViews = (List<View>)accessor.getPropertyValue("defaultViews");
    assertNotNull(defaultViews);
    assertEquals(1, defaultViews.size());
    assertEquals(MappingJackson2JsonView.class, defaultViews.get(0).getClass());


    viewResolvers = (List<ViewResolver>)accessor.getPropertyValue("viewResolvers");
    assertNotNull(viewResolvers);
    assertEquals(1, viewResolvers.size());
    assertEquals(InternalResourceViewResolver.class, viewResolvers.get(0).getClass());
    accessor = new DirectFieldAccessor(viewResolvers.get(0));
    assertEquals("/", accessor.getPropertyValue("prefix"));
    assertEquals(".jsp", accessor.getPropertyValue("suffix"));
  }

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    assertEquals(resolverType, this.registry.getViewResolvers().get(0).getClass());
    return (T) registry.getViewResolvers().get(0);
  }


  private void checkPropertyValues(ViewResolver resolver, Object... nameValuePairs) {
    DirectFieldAccessor accessor =  new DirectFieldAccessor(resolver);
    for (int i = 0; i < nameValuePairs.length ; i++, i++) {
      Object expected = nameValuePairs[i + 1];
      Object actual = accessor.getPropertyValue((String) nameValuePairs[i]);
      assertEquals(expected, actual);
    }
  }

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    Validator validator = initializer.getValidator();
    assertNotNull(validator);
    assertTrue(validator instanceof LocalValidatorFactoryBean);


    DirectFieldAccessor fieldAccessor = new DirectFieldAccessor(adapter);
    List<Object> interceptors = (List<Object>) fieldAccessor.getPropertyValue("responseBodyAdvice");
    assertEquals(1, interceptors.size());
    assertEquals(JsonViewResponseBodyAdvice.class, interceptors.get(0).getClass());
  }

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    assertEquals(DefaultHandlerExceptionResolver.class, expectedResolvers.get(2).getClass());


    ExceptionHandlerExceptionResolver eher = (ExceptionHandlerExceptionResolver) expectedResolvers.get(0);
    assertNotNull(eher.getApplicationContext());


    DirectFieldAccessor fieldAccessor = new DirectFieldAccessor(eher);
    List<Object> interceptors = (List<Object>) fieldAccessor.getPropertyValue("responseBodyAdvice");
    assertEquals(1, interceptors.size());
    assertEquals(JsonViewResponseBodyAdvice.class, interceptors.get(0).getClass());


    LocaleContextHolder.setLocale(Locale.ENGLISH);
    try {

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    MessageListener messageListener = new MessageListenerAdapter();
    endpoint.setMessageListener(messageListener);
    endpoint.setDestination("myQueue");
    DefaultMessageListenerContainer container = factory.createListenerContainer(endpoint);


    assertSame(backOff, new DirectFieldAccessor(container).getPropertyValue("backOff"));
  }

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    SimpleJmsListenerEndpoint endpoint = new SimpleJmsListenerEndpoint();
    endpoint.setConcurrency("5-10"); // simple implementation only support max value
    endpoint.setMessageListener(messageListener);


    endpoint.setupListenerContainer(container);
    assertEquals(10, new DirectFieldAccessor(container).getPropertyValue("concurrentConsumers"));
  }

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    assertTrue("listener3 not found", containers.containsKey("listener3"));
    JmsMessageEndpointManager listener3 = containers.get("listener3");
    assertEquals("Wrong resource adapter",
        context.getBean("testResourceAdapter"), listener3.getResourceAdapter());
    assertEquals("Wrong activation spec factory", context.getBean("testActivationSpecFactory"),
        new DirectFieldAccessor(listener3).getPropertyValue("activationSpecFactory"));




    Object endpointFactory = new DirectFieldAccessor(listener3).getPropertyValue("endpointFactory");
    Object messageListener = new DirectFieldAccessor(endpointFactory).getPropertyValue("messageListener");
    assertEquals("Wrong message listener", MessageListenerAdapter.class, messageListener.getClass());
    MessageListenerAdapter adapter = (MessageListenerAdapter) messageListener;
    DirectFieldAccessor adapterFieldAccessor = new DirectFieldAccessor(adapter);
    assertEquals("Message converter not set properly", context.getBean("testMessageConverter"),
        adapterFieldAccessor.getPropertyValue("messageConverter"));
    assertEquals("Wrong delegate", context.getBean("testBean1"),
        adapterFieldAccessor.getPropertyValue("delegate"));
    assertEquals("Wrong method name", "setName",
        adapterFieldAccessor.getPropertyValue("defaultListenerMethod"));
  }

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    assertEquals("wrong cache", DefaultMessageListenerContainer.CACHE_CONNECTION, container.getCacheLevel());
    assertEquals("wrong concurrency", 3, container.getConcurrentConsumers());
    assertEquals("wrong concurrency", 5, container.getMaxConcurrentConsumers());
    assertEquals("wrong prefetch", 50, container.getMaxMessagesPerTask());
    assertEquals("Wrong phase", 99, container.getPhase());
    assertSame(context.getBean("testBackOff"), new DirectFieldAccessor(container).getPropertyValue("backOff"));
  }

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    return (MessageListener) container.getMessageListener();
  }


  private ErrorHandler getErrorHandler(String containerBeanName) {
    DefaultMessageListenerContainer container = this.context.getBean(containerBeanName, DefaultMessageListenerContainer.class);
    return (ErrorHandler) new DirectFieldAccessor(container).getPropertyValue("errorHandler");
  }

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