ScheduledBeanLazyInitializationExcludeFilter Class — spring-boot Architecture

Source Code

core/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/task/ScheduledBeanLazyInitializationExcludeFilter.java lines 43–77

class ScheduledBeanLazyInitializationExcludeFilter implements LazyInitializationExcludeFilter {

	private final Set<Class<?>> nonAnnotatedClasses = ConcurrentHashMap.newKeySet(64);

	ScheduledBeanLazyInitializationExcludeFilter() {
		// Ignore AOP infrastructure such as scoped proxies.
		this.nonAnnotatedClasses.add(AopInfrastructureBean.class);
		this.nonAnnotatedClasses.add(TaskScheduler.class);
		this.nonAnnotatedClasses.add(ScheduledExecutorService.class);
	}

	@Override
	public boolean isExcluded(String beanName, BeanDefinition beanDefinition, Class<?> beanType) {
		return hasScheduledTask(beanType);
	}

	private boolean hasScheduledTask(Class<?> type) {
		Class<?> targetType = ClassUtils.getUserClass(type);
		if (!this.nonAnnotatedClasses.contains(targetType)
				&& AnnotationUtils.isCandidateClass(targetType, Arrays.asList(Scheduled.class, Schedules.class))) {
			Map<Method, Set<Scheduled>> annotatedMethods = MethodIntrospector.selectMethods(targetType,
					(MethodIntrospector.MetadataLookup<Set<Scheduled>>) (method) -> {
						Set<Scheduled> scheduledAnnotations = AnnotatedElementUtils
							.getMergedRepeatableAnnotations(method, Scheduled.class, Schedules.class);
						return (!scheduledAnnotations.isEmpty() ? scheduledAnnotations : null);
					});
			if (annotatedMethods.isEmpty()) {
				this.nonAnnotatedClasses.add(targetType);
			}
			return !annotatedMethods.isEmpty();
		}
		return false;
	}

}