org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor#requiresDestruction ( )源码实例Demo

/**
 * Search for all DestructionAwareBeanPostProcessors in the List.
 * @param processors the List to search
 * @return the filtered List of DestructionAwareBeanPostProcessors
 */
@Nullable
private List<DestructionAwareBeanPostProcessor> filterPostProcessors(List<BeanPostProcessor> processors, Object bean) {
	List<DestructionAwareBeanPostProcessor> filteredPostProcessors = null;
	if (!CollectionUtils.isEmpty(processors)) {
		filteredPostProcessors = new ArrayList<>(processors.size());
		for (BeanPostProcessor processor : processors) {
			if (processor instanceof DestructionAwareBeanPostProcessor) {
				DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
				if (dabpp.requiresDestruction(bean)) {
					filteredPostProcessors.add(dabpp);
				}
			}
		}
	}
	return filteredPostProcessors;
}
 

/**
 * Search for all DestructionAwareBeanPostProcessors in the List.
 * @param processors the List to search
 * @return the filtered List of DestructionAwareBeanPostProcessors
 */
@Nullable
private List<DestructionAwareBeanPostProcessor> filterPostProcessors(List<BeanPostProcessor> processors, Object bean) {
	List<DestructionAwareBeanPostProcessor> filteredPostProcessors = null;
	if (!CollectionUtils.isEmpty(processors)) {
		filteredPostProcessors = new ArrayList<>(processors.size());
		for (BeanPostProcessor processor : processors) {
			if (processor instanceof DestructionAwareBeanPostProcessor) {
				DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
				if (dabpp.requiresDestruction(bean)) {
					filteredPostProcessors.add(dabpp);
				}
			}
		}
	}
	return filteredPostProcessors;
}
 

/**
 * Search for all DestructionAwareBeanPostProcessors in the List.
 * @param processors the List to search
 * @return the filtered List of DestructionAwareBeanPostProcessors
 */
private List<DestructionAwareBeanPostProcessor> filterPostProcessors(List<BeanPostProcessor> processors, Object bean) {
	List<DestructionAwareBeanPostProcessor> filteredPostProcessors = null;
	if (!CollectionUtils.isEmpty(processors)) {
		filteredPostProcessors = new ArrayList<DestructionAwareBeanPostProcessor>(processors.size());
		for (BeanPostProcessor processor : processors) {
			if (processor instanceof DestructionAwareBeanPostProcessor) {
				DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
				try {
					if (dabpp.requiresDestruction(bean)) {
						filteredPostProcessors.add(dabpp);
					}
				}
				catch (AbstractMethodError err) {
					// A pre-4.3 third-party DestructionAwareBeanPostProcessor...
					// As of 5.0, we can let requiresDestruction be a Java 8 default method which returns true.
					filteredPostProcessors.add(dabpp);
				}
			}
		}
	}
	return filteredPostProcessors;
}
 

/**
 * Check whether the given bean has destruction-aware post-processors applying to it.
 * @param bean the bean instance
 * @param postProcessors the post-processor candidates
 */
public static boolean hasApplicableProcessors(Object bean, List<BeanPostProcessor> postProcessors) {
	if (!CollectionUtils.isEmpty(postProcessors)) {
		for (BeanPostProcessor processor : postProcessors) {
			if (processor instanceof DestructionAwareBeanPostProcessor) {
				DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
				try {
					if (dabpp.requiresDestruction(bean)) {
						return true;
					}
				}
				catch (AbstractMethodError err) {
					// A pre-4.3 third-party DestructionAwareBeanPostProcessor...
					// As of 5.0, we can let requiresDestruction be a Java 8 default method which returns true.
					return true;
				}
			}
		}
	}
	return false;
}
 

/**
 * Check whether the given bean has destruction-aware post-processors applying to it.
 * @param bean the bean instance
 * @param postProcessors the post-processor candidates
 */
public static boolean hasApplicableProcessors(Object bean, List<BeanPostProcessor> postProcessors) {
	if (!CollectionUtils.isEmpty(postProcessors)) {
		for (BeanPostProcessor processor : postProcessors) {
			if (processor instanceof DestructionAwareBeanPostProcessor) {
				DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
				if (dabpp.requiresDestruction(bean)) {
					return true;
				}
			}
		}
	}
	return false;
}
 

/**
 * Check whether the given bean has destruction-aware post-processors applying to it.
 * @param bean the bean instance
 * @param postProcessors the post-processor candidates
 */
public static boolean hasApplicableProcessors(Object bean, List<BeanPostProcessor> postProcessors) {
	if (!CollectionUtils.isEmpty(postProcessors)) {
		for (BeanPostProcessor processor : postProcessors) {
			if (processor instanceof DestructionAwareBeanPostProcessor) {
				DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
				if (dabpp.requiresDestruction(bean)) {
					return true;
				}
			}
		}
	}
	return false;
}