org.springframework.beans.factory.config.BeanDefinition#setAttribute ( )源码实例Demo

/**
 * Generate a scoped proxy for the supplied target bean, registering the target
 * bean with an internal name and setting 'targetBeanName' on the scoped proxy.
 * @param definition the original bean definition
 * @param registry the bean definition registry
 * @param proxyTargetClass whether to create a target class proxy
 * @return the scoped proxy definition
 */
public static BeanDefinitionHolder createScopedProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();
	String targetBeanName = getTargetBeanName(originalBeanName);

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(ScopedProxyFactoryBean.class);
	proxyDefinition.setDecoratedDefinition(new BeanDefinitionHolder(targetDefinition, targetBeanName));
	proxyDefinition.setOriginatingBeanDefinition(targetDefinition);
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(targetDefinition.getRole());

	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);
	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		// ScopedProxyFactoryBean's "proxyTargetClass" default is TRUE, so we don't need to set it explicitly here.
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}
 

/**
 * Check whether the given bean definition is a candidate for a configuration class
 * (or a nested component class declared within a configuration/component class,
 * to be auto-registered as well), and mark it accordingly.
 * @param beanDef the bean definition to check
 * @param metadataReaderFactory the current factory in use by the caller
 * @return whether the candidate qualifies as (any kind of) configuration class
 */
public static boolean checkConfigurationClassCandidate(
		BeanDefinition beanDef, MetadataReaderFactory metadataReaderFactory) {

	String className = beanDef.getBeanClassName();
	if (className == null || beanDef.getFactoryMethodName() != null) {
		return false;
	}

	AnnotationMetadata metadata;
	if (beanDef instanceof AnnotatedBeanDefinition &&
			className.equals(((AnnotatedBeanDefinition) beanDef).getMetadata().getClassName())) {
		// Can reuse the pre-parsed metadata from the given BeanDefinition...
		metadata = ((AnnotatedBeanDefinition) beanDef).getMetadata();
	}
	else if (beanDef instanceof AbstractBeanDefinition && ((AbstractBeanDefinition) beanDef).hasBeanClass()) {
		// Check already loaded Class if present...
		// since we possibly can't even load the class file for this Class.
		Class<?> beanClass = ((AbstractBeanDefinition) beanDef).getBeanClass();
		if (BeanFactoryPostProcessor.class.isAssignableFrom(beanClass) ||
				BeanPostProcessor.class.isAssignableFrom(beanClass) ||
				AopInfrastructureBean.class.isAssignableFrom(beanClass) ||
				EventListenerFactory.class.isAssignableFrom(beanClass)) {
			return false;
		}
		metadata = AnnotationMetadata.introspect(beanClass);
	}
	else {
		try {
			MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(className);
			metadata = metadataReader.getAnnotationMetadata();
		}
		catch (IOException ex) {
			if (logger.isDebugEnabled()) {
				logger.debug("Could not find class file for introspecting configuration annotations: " +
						className, ex);
			}
			return false;
		}
	}

	Map<String, Object> config = metadata.getAnnotationAttributes(Configuration.class.getName());
	if (config != null && !Boolean.FALSE.equals(config.get("proxyBeanMethods"))) {
		beanDef.setAttribute(CONFIGURATION_CLASS_ATTRIBUTE, CONFIGURATION_CLASS_FULL);
	}
	else if (config != null || isConfigurationCandidate(metadata)) {
		beanDef.setAttribute(CONFIGURATION_CLASS_ATTRIBUTE, CONFIGURATION_CLASS_LITE);
	}
	else {
		return false;
	}

	// It's a full or lite configuration candidate... Let's determine the order value, if any.
	Integer order = getOrder(metadata);
	if (order != null) {
		beanDef.setAttribute(ORDER_ATTRIBUTE, order);
	}

	return true;
}
 

/**
 * Generate a scoped proxy for the supplied target bean, registering the target
 * bean with an internal name and setting 'targetBeanName' on the scoped proxy.
 * @param definition the original bean definition
 * @param registry the bean definition registry
 * @param proxyTargetClass whether to create a target class proxy
 * @return the scoped proxy definition
 */
public static BeanDefinitionHolder createScopedProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();
	String targetBeanName = getTargetBeanName(originalBeanName);

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(ScopedProxyFactoryBean.class);
	proxyDefinition.setDecoratedDefinition(new BeanDefinitionHolder(targetDefinition, targetBeanName));
	proxyDefinition.setOriginatingBeanDefinition(targetDefinition);
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(targetDefinition.getRole());

	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);
	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		// ScopedProxyFactoryBean's "proxyTargetClass" default is TRUE, so we don't need to set it explicitly here.
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}
 

/**
 * Generate a scoped proxy for the supplied target bean, registering the target
 * bean with an internal name and setting 'targetBeanName' on the scoped proxy.
 * @param definition the original bean definition
 * @param registry the bean definition registry
 * @param proxyTargetClass whether to create a target class proxy
 * @return the scoped proxy definition
 */
public static BeanDefinitionHolder createScopedProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();
	String targetBeanName = getTargetBeanName(originalBeanName);

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(ScopedProxyFactoryBean.class);
	proxyDefinition.setDecoratedDefinition(new BeanDefinitionHolder(targetDefinition, targetBeanName));
	proxyDefinition.setOriginatingBeanDefinition(targetDefinition);
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(targetDefinition.getRole());

	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);
	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		// ScopedProxyFactoryBean's "proxyTargetClass" default is TRUE, so we don't need to set it explicitly here.
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}
 

/**
 * Generate a scoped proxy for the supplied target bean, registering the target
 * bean with an internal name and setting 'targetBeanName' on the scoped proxy.
 * @param definition the original bean definition
 * @param registry the bean definition registry
 * @param proxyTargetClass whether to create a target class proxy
 * @return the scoped proxy definition
 */
public static BeanDefinitionHolder createScopedProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();
	String targetBeanName = getTargetBeanName(originalBeanName);

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(ScopedProxyFactoryBean.class);
	proxyDefinition.setDecoratedDefinition(new BeanDefinitionHolder(targetDefinition, targetBeanName));
	proxyDefinition.setOriginatingBeanDefinition(targetDefinition);
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(targetDefinition.getRole());

	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);
	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
		// ScopedProxyFactoryBean's "proxyTargetClass" default is TRUE, so we don't need to set it explicitly here.
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}
 

public static  BeanDefinitionHolder createSerializableProxy(BeanDefinitionHolder definition,
		BeanDefinitionRegistry registry, boolean proxyTargetClass) {

	String originalBeanName = definition.getBeanName();
	BeanDefinition targetDefinition = definition.getBeanDefinition();

	// Create a scoped proxy definition for the original bean name,
	// "hiding" the target bean in an internal target definition.
	RootBeanDefinition proxyDefinition = new RootBeanDefinition(SerializableProxyFactoryBean.class);
	proxyDefinition.setOriginatingBeanDefinition(definition.getBeanDefinition());
	proxyDefinition.setSource(definition.getSource());
	proxyDefinition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);

	String targetBeanName = getTargetBeanName(originalBeanName);
	proxyDefinition.getPropertyValues().add("targetBeanName", targetBeanName);

	if (proxyTargetClass) {
		targetDefinition.setAttribute(AutoProxyUtils.PRESERVE_TARGET_CLASS_ATTRIBUTE, Boolean.TRUE);
	}
	else {
		proxyDefinition.getPropertyValues().add("proxyTargetClass", Boolean.FALSE);
	}

	// Copy autowire settings from original bean definition.
	proxyDefinition.setAutowireCandidate(targetDefinition.isAutowireCandidate());
	proxyDefinition.setPrimary(targetDefinition.isPrimary());
	if (targetDefinition instanceof AbstractBeanDefinition) {
		proxyDefinition.copyQualifiersFrom((AbstractBeanDefinition) targetDefinition);
	}
	
	// Set singleton property of FactoryBean
	proxyDefinition.getPropertyValues().add("singleton", !targetDefinition.isPrototype());

	// The target bean should be ignored in favor of the scoped proxy.
	targetDefinition.setAutowireCandidate(false);
	targetDefinition.setPrimary(false);

	// Register the target bean as separate bean in the factory.
	registry.registerBeanDefinition(targetBeanName, targetDefinition);

	// Return the scoped proxy definition as primary bean definition
	// (potentially an inner bean).
	return new BeanDefinitionHolder(proxyDefinition, originalBeanName, definition.getAliases());
}