org.springframework.beans.factory.config.BeanDefinitionHolder#getBeanDefinition ( )源码实例Demo

@Override
public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder definition, ParserContext parserContext) {
	Element element = (Element) node;
	BeanDefinition def = definition.getBeanDefinition();

	MutablePropertyValues mpvs = (def.getPropertyValues() == null) ? new MutablePropertyValues() : def.getPropertyValues();
	mpvs.add("name", element.getAttribute("name"));
	mpvs.add("age", element.getAttribute("age"));

	((AbstractBeanDefinition) def).setPropertyValues(mpvs);
	return definition;
}
 

@Override
public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder definition, ParserContext parserContext) {
	Element element = (Element) node;
	BeanDefinition def = definition.getBeanDefinition();

	MutablePropertyValues mpvs = (def.getPropertyValues() == null) ? new MutablePropertyValues() : def.getPropertyValues();
	mpvs.add("name", element.getAttribute("name"));
	mpvs.add("age", element.getAttribute("age"));

	((AbstractBeanDefinition) def).setPropertyValues(mpvs);
	return definition;
}
 

@Override
protected Set<BeanDefinitionHolder> doScan(String... basePackages) {
	HashSet<BeanDefinitionHolder> beans = new HashSet<BeanDefinitionHolder>();
	Set<BeanDefinitionHolder> set = super.doScan(basePackages);
	for(BeanDefinitionHolder bdh:set){
		GenericBeanDefinition bdf = (GenericBeanDefinition)bdh.getBeanDefinition();
		bdf.getPropertyValues().add("invokerInterface", bdf.getBeanClassName());
		bdf.getPropertyValues().add("rpcClientCache", rpcClients);
		bdf.setBeanClass(RpcInvokerFactoryBean.class);
	}
	return beans;
}
 

/**
 * Read the given {@link BeanMethod}, registering bean definitions
 * with the BeanDefinitionRegistry based on its contents.
 */
private void loadBeanDefinitionsForBeanMethod(BeanMethod beanMethod) {
	ConfigurationClass configClass = beanMethod.getConfigurationClass();
	MethodMetadata metadata = beanMethod.getMetadata();
	String methodName = metadata.getMethodName();

	// Do we need to mark the bean as skipped by its condition?
	if (this.conditionEvaluator.shouldSkip(metadata, ConfigurationPhase.REGISTER_BEAN)) {
		configClass.skippedBeanMethods.add(methodName);
		return;
	}
	if (configClass.skippedBeanMethods.contains(methodName)) {
		return;
	}

	// Consider name and any aliases
	AnnotationAttributes bean = AnnotationConfigUtils.attributesFor(metadata, Bean.class);
	List<String> names = new ArrayList<String>(Arrays.asList(bean.getStringArray("name")));
	String beanName = (!names.isEmpty() ? names.remove(0) : methodName);

	// Register aliases even when overridden
	for (String alias : names) {
		this.registry.registerAlias(beanName, alias);
	}

	// Has this effectively been overridden before (e.g. via XML)?
	if (isOverriddenByExistingDefinition(beanMethod, beanName)) {
		if (beanName.equals(beanMethod.getConfigurationClass().getBeanName())) {
			throw new BeanDefinitionStoreException(beanMethod.getConfigurationClass().getResource().getDescription(),
					beanName, "Bean name derived from @Bean method '" + beanMethod.getMetadata().getMethodName() +
					"' clashes with bean name for containing configuration class; please make those names unique!");
		}
		return;
	}

	ConfigurationClassBeanDefinition beanDef = new ConfigurationClassBeanDefinition(configClass, metadata);
	beanDef.setResource(configClass.getResource());
	beanDef.setSource(this.sourceExtractor.extractSource(metadata, configClass.getResource()));

	if (metadata.isStatic()) {
		// static @Bean method
		beanDef.setBeanClassName(configClass.getMetadata().getClassName());
		beanDef.setFactoryMethodName(methodName);
	}
	else {
		// instance @Bean method
		beanDef.setFactoryBeanName(configClass.getBeanName());
		beanDef.setUniqueFactoryMethodName(methodName);
	}
	beanDef.setAutowireMode(RootBeanDefinition.AUTOWIRE_CONSTRUCTOR);
	beanDef.setAttribute(RequiredAnnotationBeanPostProcessor.SKIP_REQUIRED_CHECK_ATTRIBUTE, Boolean.TRUE);

	AnnotationConfigUtils.processCommonDefinitionAnnotations(beanDef, metadata);

	Autowire autowire = bean.getEnum("autowire");
	if (autowire.isAutowire()) {
		beanDef.setAutowireMode(autowire.value());
	}

	String initMethodName = bean.getString("initMethod");
	if (StringUtils.hasText(initMethodName)) {
		beanDef.setInitMethodName(initMethodName);
	}

	String destroyMethodName = bean.getString("destroyMethod");
	if (destroyMethodName != null) {
		beanDef.setDestroyMethodName(destroyMethodName);
	}

	// Consider scoping
	ScopedProxyMode proxyMode = ScopedProxyMode.NO;
	AnnotationAttributes attributes = AnnotationConfigUtils.attributesFor(metadata, Scope.class);
	if (attributes != null) {
		beanDef.setScope(attributes.getString("value"));
		proxyMode = attributes.getEnum("proxyMode");
		if (proxyMode == ScopedProxyMode.DEFAULT) {
			proxyMode = ScopedProxyMode.NO;
		}
	}

	// Replace the original bean definition with the target one, if necessary
	BeanDefinition beanDefToRegister = beanDef;
	if (proxyMode != ScopedProxyMode.NO) {
		BeanDefinitionHolder proxyDef = ScopedProxyCreator.createScopedProxy(
				new BeanDefinitionHolder(beanDef, beanName), this.registry,
				proxyMode == ScopedProxyMode.TARGET_CLASS);
		beanDefToRegister = new ConfigurationClassBeanDefinition(
				(RootBeanDefinition) proxyDef.getBeanDefinition(), configClass, metadata);
	}

	if (logger.isDebugEnabled()) {
		logger.debug(String.format("Registering bean definition for @Bean method %s.%s()",
				configClass.getMetadata().getClassName(), beanName));
	}

	this.registry.registerBeanDefinition(beanName, beanDefToRegister);
}
 

/**
 * 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());
}
 

/**
 * Apply processing and build a complete {@link ConfigurationClass} by reading the
 * annotations, members and methods from the source class. This method can be called
 * multiple times as relevant sources are discovered.
 * @param configClass the configuration class being build
 * @param sourceClass a source class
 * @return the superclass, or {@code null} if none found or previously processed
 */
@Nullable
protected final SourceClass doProcessConfigurationClass(ConfigurationClass configClass, SourceClass sourceClass)
		throws IOException {

	if (configClass.getMetadata().isAnnotated(Component.class.getName())) {
		// Recursively process any member (nested) classes first
		processMemberClasses(configClass, sourceClass);
	}

	// Process any @PropertySource annotations
	for (AnnotationAttributes propertySource : AnnotationConfigUtils.attributesForRepeatable(
			sourceClass.getMetadata(), PropertySources.class,
			org.springframework.context.annotation.PropertySource.class)) {
		if (this.environment instanceof ConfigurableEnvironment) {
			processPropertySource(propertySource);
		}
		else {
			logger.info("Ignoring @PropertySource annotation on [" + sourceClass.getMetadata().getClassName() +
					"]. Reason: Environment must implement ConfigurableEnvironment");
		}
	}

	// Process any @ComponentScan annotations
	Set<AnnotationAttributes> componentScans = AnnotationConfigUtils.attributesForRepeatable(
			sourceClass.getMetadata(), ComponentScans.class, ComponentScan.class);
	if (!componentScans.isEmpty() &&
			!this.conditionEvaluator.shouldSkip(sourceClass.getMetadata(), ConfigurationPhase.REGISTER_BEAN)) {
		for (AnnotationAttributes componentScan : componentScans) {
			// The config class is annotated with @ComponentScan -> perform the scan immediately
			Set<BeanDefinitionHolder> scannedBeanDefinitions =
					this.componentScanParser.parse(componentScan, sourceClass.getMetadata().getClassName());
			// Check the set of scanned definitions for any further config classes and parse recursively if needed
			for (BeanDefinitionHolder holder : scannedBeanDefinitions) {
				BeanDefinition bdCand = holder.getBeanDefinition().getOriginatingBeanDefinition();
				if (bdCand == null) {
					bdCand = holder.getBeanDefinition();
				}
				if (ConfigurationClassUtils.checkConfigurationClassCandidate(bdCand, this.metadataReaderFactory)) {
					parse(bdCand.getBeanClassName(), holder.getBeanName());
				}
			}
		}
	}

	// Process any @Import annotations
	processImports(configClass, sourceClass, getImports(sourceClass), true);

	// Process any @ImportResource annotations
	AnnotationAttributes importResource =
			AnnotationConfigUtils.attributesFor(sourceClass.getMetadata(), ImportResource.class);
	if (importResource != null) {
		String[] resources = importResource.getStringArray("locations");
		Class<? extends BeanDefinitionReader> readerClass = importResource.getClass("reader");
		for (String resource : resources) {
			String resolvedResource = this.environment.resolveRequiredPlaceholders(resource);
			configClass.addImportedResource(resolvedResource, readerClass);
		}
	}

	// Process individual @Bean methods
	Set<MethodMetadata> beanMethods = retrieveBeanMethodMetadata(sourceClass);
	for (MethodMetadata methodMetadata : beanMethods) {
		configClass.addBeanMethod(new BeanMethod(methodMetadata, configClass));
	}

	// Process default methods on interfaces
	processInterfaces(configClass, sourceClass);

	// Process superclass, if any
	if (sourceClass.getMetadata().hasSuperClass()) {
		String superclass = sourceClass.getMetadata().getSuperClassName();
		if (superclass != null && !superclass.startsWith("java") &&
				!this.knownSuperclasses.containsKey(superclass)) {
			this.knownSuperclasses.put(superclass, configClass);
			// Superclass found, return its annotation metadata and recurse
			return sourceClass.getSuperClass();
		}
	}

	// No superclass -> processing is complete
	return null;
}
 

/**
 * Match the given qualifier annotation against the candidate bean definition.
 */
protected boolean checkQualifier(
		BeanDefinitionHolder bdHolder, Annotation annotation, TypeConverter typeConverter) {

	Class<? extends Annotation> type = annotation.annotationType();
	RootBeanDefinition bd = (RootBeanDefinition) bdHolder.getBeanDefinition();

	AutowireCandidateQualifier qualifier = bd.getQualifier(type.getName());
	if (qualifier == null) {
		qualifier = bd.getQualifier(ClassUtils.getShortName(type));
	}
	if (qualifier == null) {
		// First, check annotation on qualified element, if any
		Annotation targetAnnotation = getQualifiedElementAnnotation(bd, type);
		// Then, check annotation on factory method, if applicable
		if (targetAnnotation == null) {
			targetAnnotation = getFactoryMethodAnnotation(bd, type);
		}
		if (targetAnnotation == null) {
			RootBeanDefinition dbd = getResolvedDecoratedDefinition(bd);
			if (dbd != null) {
				targetAnnotation = getFactoryMethodAnnotation(dbd, type);
			}
		}
		if (targetAnnotation == null) {
			// Look for matching annotation on the target class
			if (getBeanFactory() != null) {
				try {
					Class<?> beanType = getBeanFactory().getType(bdHolder.getBeanName());
					if (beanType != null) {
						targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(beanType), type);
					}
				}
				catch (NoSuchBeanDefinitionException ex) {
					// Not the usual case - simply forget about the type check...
				}
			}
			if (targetAnnotation == null && bd.hasBeanClass()) {
				targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(bd.getBeanClass()), type);
			}
		}
		if (targetAnnotation != null && targetAnnotation.equals(annotation)) {
			return true;
		}
	}

	Map<String, Object> attributes = AnnotationUtils.getAnnotationAttributes(annotation);
	if (attributes.isEmpty() && qualifier == null) {
		// If no attributes, the qualifier must be present
		return false;
	}
	for (Map.Entry<String, Object> entry : attributes.entrySet()) {
		String attributeName = entry.getKey();
		Object expectedValue = entry.getValue();
		Object actualValue = null;
		// Check qualifier first
		if (qualifier != null) {
			actualValue = qualifier.getAttribute(attributeName);
		}
		if (actualValue == null) {
			// Fall back on bean definition attribute
			actualValue = bd.getAttribute(attributeName);
		}
		if (actualValue == null && attributeName.equals(AutowireCandidateQualifier.VALUE_KEY) &&
				expectedValue instanceof String && bdHolder.matchesName((String) expectedValue)) {
			// Fall back on bean name (or alias) match
			continue;
		}
		if (actualValue == null && qualifier != null) {
			// Fall back on default, but only if the qualifier is present
			actualValue = AnnotationUtils.getDefaultValue(annotation, attributeName);
		}
		if (actualValue != null) {
			actualValue = typeConverter.convertIfNecessary(actualValue, expectedValue.getClass());
		}
		if (!expectedValue.equals(actualValue)) {
			return false;
		}
	}
	return true;
}
 

private Class<?> resolveClass(BeanDefinitionHolder beanDefinitionHolder) {
    BeanDefinition beanDefinition = beanDefinitionHolder.getBeanDefinition();
    return resolveClass(beanDefinition);

}
 

public void setBeanDefinitionHolder(BeanDefinitionHolder holder) {
	this.definition = (AbstractBeanDefinition) holder.getBeanDefinition();
	this.beanName = holder.getBeanName();
}
 

public void setBeanDefinitionHolder(BeanDefinitionHolder holder) {
	this.definition = (AbstractBeanDefinition) holder.getBeanDefinition();
	this.beanName = holder.getBeanName();
}
 

public void setBeanDefinitionHolder(BeanDefinitionHolder holder) {
	this.definition = (AbstractBeanDefinition) holder.getBeanDefinition();
	this.beanName = holder.getBeanName();
}
 

/**
 * Apply processing and build a complete {@link ConfigurationClass} by reading the
 * annotations, members and methods from the source class. This method can be called
 * multiple times as relevant sources are discovered.
 * @param configClass the configuration class being build
 * @param sourceClass a source class
 * @return the superclass, or {@code null} if none found or previously processed
 */
@Nullable
protected final SourceClass doProcessConfigurationClass(ConfigurationClass configClass, SourceClass sourceClass)
		throws IOException {

	if (configClass.getMetadata().isAnnotated(Component.class.getName())) {
		// Recursively process any member (nested) classes first
		processMemberClasses(configClass, sourceClass);
	}

	// Process any @PropertySource annotations
	for (AnnotationAttributes propertySource : AnnotationConfigUtils.attributesForRepeatable(
			sourceClass.getMetadata(), PropertySources.class,
			org.springframework.context.annotation.PropertySource.class)) {
		if (this.environment instanceof ConfigurableEnvironment) {
			processPropertySource(propertySource);
		}
		else {
			logger.info("Ignoring @PropertySource annotation on [" + sourceClass.getMetadata().getClassName() +
					"]. Reason: Environment must implement ConfigurableEnvironment");
		}
	}

	// Process any @ComponentScan annotations
	Set<AnnotationAttributes> componentScans = AnnotationConfigUtils.attributesForRepeatable(
			sourceClass.getMetadata(), ComponentScans.class, ComponentScan.class);
	if (!componentScans.isEmpty() &&
			!this.conditionEvaluator.shouldSkip(sourceClass.getMetadata(), ConfigurationPhase.REGISTER_BEAN)) {
		for (AnnotationAttributes componentScan : componentScans) {
			// The config class is annotated with @ComponentScan -> perform the scan immediately
			Set<BeanDefinitionHolder> scannedBeanDefinitions =
					this.componentScanParser.parse(componentScan, sourceClass.getMetadata().getClassName());
			// Check the set of scanned definitions for any further config classes and parse recursively if needed
			for (BeanDefinitionHolder holder : scannedBeanDefinitions) {
				BeanDefinition bdCand = holder.getBeanDefinition().getOriginatingBeanDefinition();
				if (bdCand == null) {
					bdCand = holder.getBeanDefinition();
				}
				if (ConfigurationClassUtils.checkConfigurationClassCandidate(bdCand, this.metadataReaderFactory)) {
					parse(bdCand.getBeanClassName(), holder.getBeanName());
				}
			}
		}
	}

	// Process any @Import annotations
	processImports(configClass, sourceClass, getImports(sourceClass), true);

	// Process any @ImportResource annotations
	AnnotationAttributes importResource =
			AnnotationConfigUtils.attributesFor(sourceClass.getMetadata(), ImportResource.class);
	if (importResource != null) {
		String[] resources = importResource.getStringArray("locations");
		Class<? extends BeanDefinitionReader> readerClass = importResource.getClass("reader");
		for (String resource : resources) {
			String resolvedResource = this.environment.resolveRequiredPlaceholders(resource);
			configClass.addImportedResource(resolvedResource, readerClass);
		}
	}

	// Process individual @Bean methods
	Set<MethodMetadata> beanMethods = retrieveBeanMethodMetadata(sourceClass);
	for (MethodMetadata methodMetadata : beanMethods) {
		configClass.addBeanMethod(new BeanMethod(methodMetadata, configClass));
	}

	// Process default methods on interfaces
	processInterfaces(configClass, sourceClass);

	// Process superclass, if any
	if (sourceClass.getMetadata().hasSuperClass()) {
		String superclass = sourceClass.getMetadata().getSuperClassName();
		if (superclass != null && !superclass.startsWith("java") &&
				!this.knownSuperclasses.containsKey(superclass)) {
			this.knownSuperclasses.put(superclass, configClass);
			// Superclass found, return its annotation metadata and recurse
			return sourceClass.getSuperClass();
		}
	}

	// No superclass -> processing is complete
	return null;
}
 

/**
 * Read the given {@link BeanMethod}, registering bean definitions
 * with the BeanDefinitionRegistry based on its contents.
 */
private void loadBeanDefinitionsForBeanMethod(BeanMethod beanMethod) {
	ConfigurationClass configClass = beanMethod.getConfigurationClass();
	MethodMetadata metadata = beanMethod.getMetadata();
	String methodName = metadata.getMethodName();

	// Do we need to mark the bean as skipped by its condition?
	if (this.conditionEvaluator.shouldSkip(metadata, ConfigurationPhase.REGISTER_BEAN)) {
		configClass.skippedBeanMethods.add(methodName);
		return;
	}
	if (configClass.skippedBeanMethods.contains(methodName)) {
		return;
	}

	// Consider name and any aliases
	AnnotationAttributes bean = AnnotationConfigUtils.attributesFor(metadata, Bean.class);
	List<String> names = new ArrayList<String>(Arrays.asList(bean.getStringArray("name")));
	String beanName = (names.size() > 0 ? names.remove(0) : methodName);

	// Register aliases even when overridden
	for (String alias : names) {
		this.registry.registerAlias(beanName, alias);
	}

	// Has this effectively been overridden before (e.g. via XML)?
	if (isOverriddenByExistingDefinition(beanMethod, beanName)) {
		return;
	}

	ConfigurationClassBeanDefinition beanDef = new ConfigurationClassBeanDefinition(configClass, metadata);
	beanDef.setResource(configClass.getResource());
	beanDef.setSource(this.sourceExtractor.extractSource(metadata, configClass.getResource()));

	if (metadata.isStatic()) {
		// static @Bean method
		beanDef.setBeanClassName(configClass.getMetadata().getClassName());
		beanDef.setFactoryMethodName(methodName);
	}
	else {
		// instance @Bean method
		beanDef.setFactoryBeanName(configClass.getBeanName());
		beanDef.setUniqueFactoryMethodName(methodName);
	}
	beanDef.setAutowireMode(RootBeanDefinition.AUTOWIRE_CONSTRUCTOR);
	beanDef.setAttribute(RequiredAnnotationBeanPostProcessor.SKIP_REQUIRED_CHECK_ATTRIBUTE, Boolean.TRUE);

	AnnotationConfigUtils.processCommonDefinitionAnnotations(beanDef, metadata);

	Autowire autowire = bean.getEnum("autowire");
	if (autowire.isAutowire()) {
		beanDef.setAutowireMode(autowire.value());
	}

	String initMethodName = bean.getString("initMethod");
	if (StringUtils.hasText(initMethodName)) {
		beanDef.setInitMethodName(initMethodName);
	}

	String destroyMethodName = bean.getString("destroyMethod");
	if (destroyMethodName != null) {
		beanDef.setDestroyMethodName(destroyMethodName);
	}

	// Consider scoping
	ScopedProxyMode proxyMode = ScopedProxyMode.NO;
	AnnotationAttributes attributes = AnnotationConfigUtils.attributesFor(metadata, Scope.class);
	if (attributes != null) {
		beanDef.setScope(attributes.getAliasedString("value", Scope.class, configClass.getResource()));
		proxyMode = attributes.getEnum("proxyMode");
		if (proxyMode == ScopedProxyMode.DEFAULT) {
			proxyMode = ScopedProxyMode.NO;
		}
	}

	// Replace the original bean definition with the target one, if necessary
	BeanDefinition beanDefToRegister = beanDef;
	if (proxyMode != ScopedProxyMode.NO) {
		BeanDefinitionHolder proxyDef = ScopedProxyCreator.createScopedProxy(
				new BeanDefinitionHolder(beanDef, beanName), this.registry, proxyMode == ScopedProxyMode.TARGET_CLASS);
		beanDefToRegister = new ConfigurationClassBeanDefinition(
				(RootBeanDefinition) proxyDef.getBeanDefinition(), configClass, metadata);
	}

	if (logger.isDebugEnabled()) {
		logger.debug(String.format("Registering bean definition for @Bean method %s.%s()",
				configClass.getMetadata().getClassName(), beanName));
	}

	this.registry.registerBeanDefinition(beanName, beanDefToRegister);
}
 

/**
 * Match the given qualifier annotation against the candidate bean definition.
 */
protected boolean checkQualifier(
		BeanDefinitionHolder bdHolder, Annotation annotation, TypeConverter typeConverter) {

	Class<? extends Annotation> type = annotation.annotationType();
	RootBeanDefinition bd = (RootBeanDefinition) bdHolder.getBeanDefinition();

	AutowireCandidateQualifier qualifier = bd.getQualifier(type.getName());
	if (qualifier == null) {
		qualifier = bd.getQualifier(ClassUtils.getShortName(type));
	}
	if (qualifier == null) {
		// First, check annotation on qualified element, if any
		Annotation targetAnnotation = getQualifiedElementAnnotation(bd, type);
		// Then, check annotation on factory method, if applicable
		if (targetAnnotation == null) {
			targetAnnotation = getFactoryMethodAnnotation(bd, type);
		}
		if (targetAnnotation == null) {
			RootBeanDefinition dbd = getResolvedDecoratedDefinition(bd);
			if (dbd != null) {
				targetAnnotation = getFactoryMethodAnnotation(dbd, type);
			}
		}
		if (targetAnnotation == null) {
			// Look for matching annotation on the target class
			if (getBeanFactory() != null) {
				try {
					Class<?> beanType = getBeanFactory().getType(bdHolder.getBeanName());
					if (beanType != null) {
						targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(beanType), type);
					}
				}
				catch (NoSuchBeanDefinitionException ex) {
					// Not the usual case - simply forget about the type check...
				}
			}
			if (targetAnnotation == null && bd.hasBeanClass()) {
				targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(bd.getBeanClass()), type);
			}
		}
		if (targetAnnotation != null && targetAnnotation.equals(annotation)) {
			return true;
		}
	}

	Map<String, Object> attributes = AnnotationUtils.getAnnotationAttributes(annotation);
	if (attributes.isEmpty() && qualifier == null) {
		// If no attributes, the qualifier must be present
		return false;
	}
	for (Map.Entry<String, Object> entry : attributes.entrySet()) {
		String attributeName = entry.getKey();
		Object expectedValue = entry.getValue();
		Object actualValue = null;
		// Check qualifier first
		if (qualifier != null) {
			actualValue = qualifier.getAttribute(attributeName);
		}
		if (actualValue == null) {
			// Fall back on bean definition attribute
			actualValue = bd.getAttribute(attributeName);
		}
		if (actualValue == null && attributeName.equals(AutowireCandidateQualifier.VALUE_KEY) &&
				expectedValue instanceof String && bdHolder.matchesName((String) expectedValue)) {
			// Fall back on bean name (or alias) match
			continue;
		}
		if (actualValue == null && qualifier != null) {
			// Fall back on default, but only if the qualifier is present
			actualValue = AnnotationUtils.getDefaultValue(annotation, attributeName);
		}
		if (actualValue != null) {
			actualValue = typeConverter.convertIfNecessary(actualValue, expectedValue.getClass());
		}
		if (!expectedValue.equals(actualValue)) {
			return false;
		}
	}
	return true;
}
 

/**
 * Match the given qualifier annotation against the candidate bean definition.
 */
protected boolean checkQualifier(
		BeanDefinitionHolder bdHolder, Annotation annotation, TypeConverter typeConverter) {

	Class<? extends Annotation> type = annotation.annotationType();
	RootBeanDefinition bd = (RootBeanDefinition) bdHolder.getBeanDefinition();

	AutowireCandidateQualifier qualifier = bd.getQualifier(type.getName());
	if (qualifier == null) {
		qualifier = bd.getQualifier(ClassUtils.getShortName(type));
	}
	if (qualifier == null) {
		// First, check annotation on factory method, if applicable
		Annotation targetAnnotation = getFactoryMethodAnnotation(bd, type);
		if (targetAnnotation == null) {
			RootBeanDefinition dbd = getResolvedDecoratedDefinition(bd);
			if (dbd != null) {
				targetAnnotation = getFactoryMethodAnnotation(dbd, type);
			}
		}
		if (targetAnnotation == null) {
			// Look for matching annotation on the target class
			if (getBeanFactory() != null) {
				Class<?> beanType = getBeanFactory().getType(bdHolder.getBeanName());
				if (beanType != null) {
					targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(beanType), type);
				}
			}
			if (targetAnnotation == null && bd.hasBeanClass()) {
				targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(bd.getBeanClass()), type);
			}
		}
		if (targetAnnotation != null && targetAnnotation.equals(annotation)) {
			return true;
		}
	}

	Map<String, Object> attributes = AnnotationUtils.getAnnotationAttributes(annotation);
	if (attributes.isEmpty() && qualifier == null) {
		// If no attributes, the qualifier must be present
		return false;
	}
	for (Map.Entry<String, Object> entry : attributes.entrySet()) {
		String attributeName = entry.getKey();
		Object expectedValue = entry.getValue();
		Object actualValue = null;
		// Check qualifier first
		if (qualifier != null) {
			actualValue = qualifier.getAttribute(attributeName);
		}
		if (actualValue == null) {
			// Fall back on bean definition attribute
			actualValue = bd.getAttribute(attributeName);
		}
		if (actualValue == null && attributeName.equals(AutowireCandidateQualifier.VALUE_KEY) &&
				expectedValue instanceof String && bdHolder.matchesName((String) expectedValue)) {
			// Fall back on bean name (or alias) match
			continue;
		}
		if (actualValue == null && qualifier != null) {
			// Fall back on default, but only if the qualifier is present
			actualValue = AnnotationUtils.getDefaultValue(annotation, attributeName);
		}
		if (actualValue != null) {
			actualValue = typeConverter.convertIfNecessary(actualValue, expectedValue.getClass());
		}
		if (!expectedValue.equals(actualValue)) {
			return false;
		}
	}
	return true;
}
 

@Override
public Class<?> getType(@Nonnull String beanName) throws NoSuchBeanDefinitionException {
    Optional<Class<?>> opt = beanTypeCache.get(beanName);
    //noinspection OptionalAssignedToNull
    if (opt == null) {
        final BeanDefinitionReference<?> definition = beanDefinitionMap.get(beanName);
        if (definition != null) {
            opt = Optional.of(definition.getBeanType());
        } else {

            beanName = transformedBeanName(beanName);
            // Check manually registered singletons.
            Object beanInstance = super.getSingleton(beanName, false);
            if (beanInstance != null && !beanInstance.getClass().getSimpleName().equals("NullBean")) {
                if (beanInstance instanceof FactoryBean && !BeanFactoryUtils.isFactoryDereference(beanName)) {
                    return getTypeForFactoryBean((FactoryBean<?>) beanInstance);
                } else {
                    return beanInstance.getClass();
                }
            }
            // No singleton instance found -> check bean definition.
            org.springframework.beans.factory.BeanFactory parentBeanFactory = getParentBeanFactory();
            if (parentBeanFactory != null && !containsBeanDefinition(beanName)) {
                // No bean definition found in this factory -> delegate to parent.
                return parentBeanFactory.getType(originalBeanName(beanName));
            }

            final org.springframework.beans.factory.config.BeanDefinition parentDef;
            try {
                parentDef = super.getBeanDefinition(beanName);
            } catch (NoSuchBeanDefinitionException e) {
                beanTypeCache.put(beanName, Optional.empty());
                return null;
            }
            if (parentDef instanceof RootBeanDefinition) {

                RootBeanDefinition mbd = (RootBeanDefinition) parentDef;

                // Check decorated bean definition, if any: We assume it'll be easier
                // to determine the decorated bean's type than the proxy's type.
                BeanDefinitionHolder dbd = mbd.getDecoratedDefinition();
                if (dbd != null && !BeanFactoryUtils.isFactoryDereference(beanName)) {
                    RootBeanDefinition tbd = super.getMergedBeanDefinition(dbd.getBeanName(), dbd.getBeanDefinition(), mbd);
                    Class<?> targetClass = predictBeanType(dbd.getBeanName(), tbd);
                    if (targetClass != null && !FactoryBean.class.isAssignableFrom(targetClass)) {
                        return targetClass;
                    }
                }

                Class<?> beanClass = predictBeanType(beanName, mbd);

                // Check bean class whether we're dealing with a FactoryBean.
                if (beanClass != null && FactoryBean.class.isAssignableFrom(beanClass)) {
                    if (!BeanFactoryUtils.isFactoryDereference(beanName)) {
                        // If it's a FactoryBean, we want to look at what it creates, not at the factory class.
                        return super.getTypeForFactoryBean(beanName, mbd);
                    } else {
                        return beanClass;
                    }
                } else {
                    return (!BeanFactoryUtils.isFactoryDereference(beanName) ? beanClass : null);
                }
            }
        }
        beanTypeCache.put(beanName, opt);
    }

    return opt.orElse(null);
}
 

/**
 * Match the given dependency type with its generic type information against the given
 * candidate bean definition.
 */
protected boolean checkGenericTypeMatch(BeanDefinitionHolder bdHolder, DependencyDescriptor descriptor) {
	ResolvableType dependencyType = descriptor.getResolvableType();
	if (dependencyType.getType() instanceof Class) {
		// No generic type -> we know it's a Class type-match, so no need to check again.
		return true;
	}
	ResolvableType targetType = null;
	RootBeanDefinition rbd = null;
	if (bdHolder.getBeanDefinition() instanceof RootBeanDefinition) {
		rbd = (RootBeanDefinition) bdHolder.getBeanDefinition();
	}
	if (rbd != null) {
		// First, check factory method return type, if applicable
		targetType = getReturnTypeForFactoryMethod(rbd, descriptor);
		if (targetType == null) {
			RootBeanDefinition dbd = getResolvedDecoratedDefinition(rbd);
			if (dbd != null) {
				targetType = getReturnTypeForFactoryMethod(dbd, descriptor);
			}
		}
	}
	if (targetType == null) {
		// Regular case: straight bean instance, with BeanFactory available.
		if (this.beanFactory != null) {
			Class<?> beanType = this.beanFactory.getType(bdHolder.getBeanName());
			if (beanType != null) {
				targetType = ResolvableType.forClass(ClassUtils.getUserClass(beanType));
			}
		}
		// Fallback: no BeanFactory set, or no type resolvable through it
		// -> best-effort match against the target class if applicable.
		if (targetType == null && rbd != null && rbd.hasBeanClass() && rbd.getFactoryMethodName() == null) {
			Class<?> beanClass = rbd.getBeanClass();
			if (!FactoryBean.class.isAssignableFrom(beanClass)) {
				targetType = ResolvableType.forClass(ClassUtils.getUserClass(beanClass));
			}
		}
	}
	if (targetType == null || (descriptor.fallbackMatchAllowed() && targetType.hasUnresolvableGenerics())) {
		return true;
	}
	// Full check for complex generic type match...
	return dependencyType.isAssignableFrom(targetType);
}
 

/**
 * 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());
}
 

/**
 * Match the given qualifier annotation against the candidate bean definition.
 */
protected boolean checkQualifier(
		BeanDefinitionHolder bdHolder, Annotation annotation, TypeConverter typeConverter) {

	Class<? extends Annotation> type = annotation.annotationType();
	RootBeanDefinition bd = (RootBeanDefinition) bdHolder.getBeanDefinition();

	AutowireCandidateQualifier qualifier = bd.getQualifier(type.getName());
	if (qualifier == null) {
		qualifier = bd.getQualifier(ClassUtils.getShortName(type));
	}
	if (qualifier == null) {
		// First, check annotation on qualified element, if any
		Annotation targetAnnotation = getQualifiedElementAnnotation(bd, type);
		// Then, check annotation on factory method, if applicable
		if (targetAnnotation == null) {
			targetAnnotation = getFactoryMethodAnnotation(bd, type);
		}
		if (targetAnnotation == null) {
			RootBeanDefinition dbd = getResolvedDecoratedDefinition(bd);
			if (dbd != null) {
				targetAnnotation = getFactoryMethodAnnotation(dbd, type);
			}
		}
		if (targetAnnotation == null) {
			// Look for matching annotation on the target class
			if (getBeanFactory() != null) {
				try {
					Class<?> beanType = getBeanFactory().getType(bdHolder.getBeanName());
					if (beanType != null) {
						targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(beanType), type);
					}
				}
				catch (NoSuchBeanDefinitionException ex) {
					// Not the usual case - simply forget about the type check...
				}
			}
			if (targetAnnotation == null && bd.hasBeanClass()) {
				targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(bd.getBeanClass()), type);
			}
		}
		if (targetAnnotation != null && targetAnnotation.equals(annotation)) {
			return true;
		}
	}

	Map<String, Object> attributes = AnnotationUtils.getAnnotationAttributes(annotation);
	if (attributes.isEmpty() && qualifier == null) {
		// If no attributes, the qualifier must be present
		return false;
	}
	for (Map.Entry<String, Object> entry : attributes.entrySet()) {
		String attributeName = entry.getKey();
		Object expectedValue = entry.getValue();
		Object actualValue = null;
		// Check qualifier first
		if (qualifier != null) {
			actualValue = qualifier.getAttribute(attributeName);
		}
		if (actualValue == null) {
			// Fall back on bean definition attribute
			actualValue = bd.getAttribute(attributeName);
		}
		if (actualValue == null && attributeName.equals(AutowireCandidateQualifier.VALUE_KEY) &&
				expectedValue instanceof String && bdHolder.matchesName((String) expectedValue)) {
			// Fall back on bean name (or alias) match
			continue;
		}
		if (actualValue == null && qualifier != null) {
			// Fall back on default, but only if the qualifier is present
			actualValue = AnnotationUtils.getDefaultValue(annotation, attributeName);
		}
		if (actualValue != null) {
			actualValue = typeConverter.convertIfNecessary(actualValue, expectedValue.getClass());
		}
		if (!expectedValue.equals(actualValue)) {
			return false;
		}
	}
	return true;
}
 

private Class<?> resolveClass(BeanDefinitionHolder beanDefinitionHolder) {

        BeanDefinition beanDefinition = beanDefinitionHolder.getBeanDefinition();

        return resolveClass(beanDefinition);

    }