EnableConfigurationPropertiesRegistrar Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/context/properties/EnableConfigurationPropertiesRegistrar.java lines 39–76

class EnableConfigurationPropertiesRegistrar implements ImportBeanDefinitionRegistrar {

	private static final String METHOD_VALIDATION_EXCLUDE_FILTER_BEAN_NAME = Conventions
		.getQualifiedAttributeName(EnableConfigurationPropertiesRegistrar.class, "methodValidationExcludeFilter");

	@Override
	public void registerBeanDefinitions(AnnotationMetadata metadata, BeanDefinitionRegistry registry) {
		registerInfrastructureBeans(registry);
		registerMethodValidationExcludeFilter(registry);
		ConfigurationPropertiesBeanRegistrar beanRegistrar = new ConfigurationPropertiesBeanRegistrar(registry);
		getTypes(metadata).forEach(beanRegistrar::register);
	}

	private Set<Class<?>> getTypes(AnnotationMetadata metadata) {
		return metadata.getAnnotations()
			.stream(EnableConfigurationProperties.class)
			.flatMap((annotation) -> Arrays.stream(annotation.getClassArray(MergedAnnotation.VALUE)))
			.filter((type) -> void.class != type)
			.collect(Collectors.toSet());
	}

	static void registerInfrastructureBeans(BeanDefinitionRegistry registry) {
		ConfigurationPropertiesBindingPostProcessor.register(registry);
		BoundConfigurationProperties.register(registry);
	}

	static void registerMethodValidationExcludeFilter(BeanDefinitionRegistry registry) {
		if (!registry.containsBeanDefinition(METHOD_VALIDATION_EXCLUDE_FILTER_BEAN_NAME)) {
			BeanDefinition definition = BeanDefinitionBuilder
				.rootBeanDefinition(MethodValidationExcludeFilter.class, "byAnnotation")
				.addConstructorArgValue(ConfigurationProperties.class)
				.setRole(BeanDefinition.ROLE_INFRASTRUCTURE)
				.getBeanDefinition();
			registry.registerBeanDefinition(METHOD_VALIDATION_EXCLUDE_FILTER_BEAN_NAME, definition);
		}
	}

}