Examples of org.springframework.hateoas.mvc.TypeConstrainedMappingJackson2HttpMessageConverter

org.springframework.hateoas.mvc.TypeConstrainedMappingJackson2HttpMessageConverter
Extension of {@link MappingJackson2HttpMessageConverter} to constrain the ability to read and write HTTP messagebased on the target type. Useful in case the {@link ObjectMapper} about to be configured has customizations thatsholny be applied to object trees of a certain base type. @author Oliver Gierke

    // Configure this mapper to be used if HAL is not the default media type
    if (!config().useHalAsDefaultJsonMediaType()) {
      mediaTypes.add(MediaType.APPLICATION_JSON);
    }


    MappingJackson2HttpMessageConverter jacksonConverter = new TypeConstrainedMappingJackson2HttpMessageConverter(
        ResourceSupport.class);
    jacksonConverter.setObjectMapper(objectMapper());
    jacksonConverter.setSupportedMediaTypes(mediaTypes);


    return jacksonConverter;
  }

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    // Enable returning HAL if application/json is asked if it's configured to be the default type
    if (config().useHalAsDefaultJsonMediaType()) {
      mediaTypes.add(MediaType.APPLICATION_JSON);
    }


    MappingJackson2HttpMessageConverter converter = new TypeConstrainedMappingJackson2HttpMessageConverter(
        ResourceSupport.class);
    converter.setObjectMapper(halObjectMapper());
    converter.setSupportedMediaTypes(mediaTypes);


    return converter;
  }

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      ObjectMapper halObjectMapper = beanFactory.getBean(HAL_OBJECT_MAPPER_BEAN_NAME, ObjectMapper.class);


      halObjectMapper.registerModule(new Jackson2HalModule());
      halObjectMapper.setHandlerInstantiator(new Jackson2HalModule.HalHandlerInstantiator(relProvider, curieProvider));


      MappingJackson2HttpMessageConverter halConverter = new TypeConstrainedMappingJackson2HttpMessageConverter(
          ResourceSupport.class);
      halConverter.setSupportedMediaTypes(Arrays.asList(HAL_JSON));
      halConverter.setObjectMapper(halObjectMapper);


      List<HttpMessageConverter<?>> result = new ArrayList<HttpMessageConverter<?>>(converters.size());
      result.add(halConverter);
      result.addAll(converters);
      return result;

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org.springframework.hateoas.config.HypermediaSupportBeanDefinitionRegistrar$Jackson2ModuleRegisteringBeanPostProcessor

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