org.springframework.beans.factory.config.BeanDefinitionHolder Java Examples

@Override
public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder definition, ParserContext parserContext) {
	if (node instanceof Attr) {
		Attr attr = (Attr) node;
		String propertyName = parserContext.getDelegate().getLocalName(attr);
		String propertyValue = attr.getValue();
		MutablePropertyValues pvs = definition.getBeanDefinition().getPropertyValues();
		if (pvs.contains(propertyName)) {
			parserContext.getReaderContext().error("Property '" + propertyName + "' is already defined using " +
					"both <property> and inline syntax. Only one approach may be used per property.", attr);
		}
		if (propertyName.endsWith(REF_SUFFIX)) {
			propertyName = propertyName.substring(0, propertyName.length() - REF_SUFFIX.length());
			pvs.add(Conventions.attributeNameToPropertyName(propertyName), new RuntimeBeanReference(propertyValue));
		}
		else {
			pvs.add(Conventions.attributeNameToPropertyName(propertyName), propertyValue);
		}
	}
	return definition;
}
 

@Test
public void testGetAnonymousInnerBeanFromScope() throws Exception {
	TestBean bean = (TestBean) this.beanFactory.getBean("outerBean");
	assertFalse(AopUtils.isAopProxy(bean));
	assertTrue(AopUtils.isCglibProxy(bean.getSpouse()));

	BeanDefinition beanDef = this.beanFactory.getBeanDefinition("outerBean");
	BeanDefinitionHolder innerBeanDef =
			(BeanDefinitionHolder) beanDef.getPropertyValues().getPropertyValue("spouse").getValue();
	String name = innerBeanDef.getBeanName();

	MockHttpServletRequest request = new MockHttpServletRequest();
	RequestAttributes requestAttributes = new ServletRequestAttributes(request);
	RequestContextHolder.setRequestAttributes(requestAttributes);

	try {
		assertNull(request.getAttribute("scopedTarget." + name));
		assertEquals("scoped", bean.getSpouse().getName());
		assertNotNull(request.getAttribute("scopedTarget." + name));
		assertEquals(TestBean.class, request.getAttribute("scopedTarget." + name).getClass());
		assertEquals("scoped", ((TestBean) request.getAttribute("scopedTarget." + name)).getName());
	}
	finally {
		RequestContextHolder.setRequestAttributes(null);
	}
}
 

@Override
protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
  final BeanDefinitionBuilder beanDefBuilder = BeanDefinitionBuilder.rootBeanDefinition(CuratorFrameworkFactoryBean.class);
  beanDefBuilder.setRole(ROLE_APPLICATION);
  beanDefBuilder.getRawBeanDefinition().setSource(parserContext.extractSource(element));
  
  beanDefBuilder.addPropertyValue("connectString", element.getAttribute("connect-string"));
  
  Element retryPolicyElement = DomUtils.getChildElementByTagName(element, "retry-policy");
  if (retryPolicyElement != null) {
    Element retryPolicyBeanElement = DomUtils.getChildElements(retryPolicyElement).get(0);
    BeanDefinitionHolder retryPolicy = parserContext.getDelegate().parseBeanDefinitionElement(retryPolicyBeanElement, beanDefBuilder.getBeanDefinition());
    beanDefBuilder.addPropertyValue("retryPolicy", retryPolicy);
  }

  Node namespace = element.getAttributeNode("namespace");
  if (namespace != null) {
    beanDefBuilder.addPropertyValue("namespace", namespace.getNodeValue());
  }

  return beanDefBuilder.getBeanDefinition();
}
 

/**
 * Scan and register the primary {@link BeanDefinition BeanDefinitions} that were annotated by
 * {@link #getSupportedAnnotationTypes() the supported annotation types}, and then return the {@link Map} with bean name plus
 * aliases if present and primary {@link AnnotatedBeanDefinition AnnotatedBeanDefinitions}.
 * <p>
 * Current method is allowed to be override by the sub-class to change the registration logic
 *
 * @param scanner      {@link ExposingClassPathBeanDefinitionScanner}
 * @param basePackages the base packages to scan
 * @return the {@link Map} with bean name plus aliases if present and primary
 * {@link AnnotatedBeanDefinition AnnotatedBeanDefinitions}
 */
protected Map<String, AnnotatedBeanDefinition> registerPrimaryBeanDefinitions(ExposingClassPathBeanDefinitionScanner scanner,
                                                                              String[] basePackages) {
    // Scan and register
    Set<BeanDefinitionHolder> primaryBeanDefinitionHolders = scanner.doScan(basePackages);
    // Log the primary BeanDefinitions
    logPrimaryBeanDefinitions(primaryBeanDefinitionHolders, basePackages);

    Map<String, AnnotatedBeanDefinition> primaryBeanDefinitions = new LinkedHashMap<String, AnnotatedBeanDefinition>();

    for (BeanDefinitionHolder beanDefinitionHolder : primaryBeanDefinitionHolders) {
        putPrimaryBeanDefinitions(primaryBeanDefinitions, beanDefinitionHolder);
    }

    // return
    return primaryBeanDefinitions;
}
 

@Override
public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder definition, ParserContext parserContext) {
	if (node instanceof Attr) {
		Attr attr = (Attr) node;
		String propertyName = parserContext.getDelegate().getLocalName(attr);
		String propertyValue = attr.getValue();
		MutablePropertyValues pvs = definition.getBeanDefinition().getPropertyValues();
		if (pvs.contains(propertyName)) {
			parserContext.getReaderContext().error("Property '" + propertyName + "' is already defined using " +
					"both <property> and inline syntax. Only one approach may be used per property.", attr);
		}
		if (propertyName.endsWith(REF_SUFFIX)) {
			propertyName = propertyName.substring(0, propertyName.length() - REF_SUFFIX.length());
			pvs.add(Conventions.attributeNameToPropertyName(propertyName), new RuntimeBeanReference(propertyValue));
		}
		else {
			pvs.add(Conventions.attributeNameToPropertyName(propertyName), propertyValue);
		}
	}
	return definition;
}
 

protected void registerComponents(
		XmlReaderContext readerContext, Set<BeanDefinitionHolder> beanDefinitions, Element element) {

	Object source = readerContext.extractSource(element);
	CompositeComponentDefinition compositeDef = new CompositeComponentDefinition(element.getTagName(), source);

	for (BeanDefinitionHolder beanDefHolder : beanDefinitions) {
		compositeDef.addNestedComponent(new BeanComponentDefinition(beanDefHolder));
	}

	// Register annotation config processors, if necessary.
	boolean annotationConfig = true;
	if (element.hasAttribute(ANNOTATION_CONFIG_ATTRIBUTE)) {
		annotationConfig = Boolean.valueOf(element.getAttribute(ANNOTATION_CONFIG_ATTRIBUTE));
	}
	if (annotationConfig) {
		Set<BeanDefinitionHolder> processorDefinitions =
				AnnotationConfigUtils.registerAnnotationConfigProcessors(readerContext.getRegistry(), source);
		for (BeanDefinitionHolder processorDefinition : processorDefinitions) {
			compositeDef.addNestedComponent(new BeanComponentDefinition(processorDefinition));
		}
	}

	readerContext.fireComponentRegistered(compositeDef);
}
 

/**摘抄 Spring 源码，将Bean注册到容器中*/
private BeanDefinition registerBean(Element element, ParserContext parserContext, NamedNodeMap attributes, AbstractBeanDefinition definition) {
    if (!parserContext.isNested()) {
        try {
            String id = beanID(element, attributes);
            if (!StringUtils.hasText(id)) {
                parserContext.getReaderContext().error(beanID(element, attributes) + " is undefined. for element '" + element.getLocalName(), element);
            }
            BeanDefinitionHolder holder = new BeanDefinitionHolder(definition, id);
            BeanDefinitionReaderUtils.registerBeanDefinition(holder, parserContext.getRegistry());
            parserContext.registerComponent(new BeanComponentDefinition(holder));
        } catch (BeanDefinitionStoreException ex) {
            parserContext.getReaderContext().error(ex.getMessage(), element);
            return null;
        }
    }
    return definition;
}
 

@Test
public void testAutowiredMethodParameterWithStaticallyQualifiedCandidate() {
	GenericApplicationContext context = new GenericApplicationContext();
	ConstructorArgumentValues cavs = new ConstructorArgumentValues();
	cavs.addGenericArgumentValue(JUERGEN);
	RootBeanDefinition person = new RootBeanDefinition(QualifiedPerson.class, cavs, null);
	context.registerBeanDefinition(JUERGEN,
			ScopedProxyUtils.createScopedProxy(new BeanDefinitionHolder(person, JUERGEN), context, true).getBeanDefinition());
	context.registerBeanDefinition("autowired",
			new RootBeanDefinition(QualifiedMethodParameterTestBean.class));
	AnnotationConfigUtils.registerAnnotationConfigProcessors(context);
	context.refresh();
	QualifiedMethodParameterTestBean bean =
			(QualifiedMethodParameterTestBean) context.getBean("autowired");
	assertEquals(JUERGEN, bean.getPerson().getName());
}
 

private ManagedList<?> getCallableInterceptors(
		Element element, @Nullable Object source, ParserContext context) {

	ManagedList<Object> interceptors = new ManagedList<>();
	Element asyncElement = DomUtils.getChildElementByTagName(element, "async-support");
	if (asyncElement != null) {
		Element interceptorsElement = DomUtils.getChildElementByTagName(asyncElement, "callable-interceptors");
		if (interceptorsElement != null) {
			interceptors.setSource(source);
			for (Element converter : DomUtils.getChildElementsByTagName(interceptorsElement, "bean")) {
				BeanDefinitionHolder beanDef = context.getDelegate().parseBeanDefinitionElement(converter);
				if (beanDef != null) {
					beanDef = context.getDelegate().decorateBeanDefinitionIfRequired(converter, beanDef);
					interceptors.add(beanDef);
				}
			}
		}
	}
	return interceptors;
}
 

private ManagedList<Object> wrapLegacyResolvers(List<Object> list, ParserContext context) {
	ManagedList<Object> result = new ManagedList<>();
	for (Object object : list) {
		if (object instanceof BeanDefinitionHolder) {
			BeanDefinitionHolder beanDef = (BeanDefinitionHolder) object;
			String className = beanDef.getBeanDefinition().getBeanClassName();
			Assert.notNull(className, "No resolver class");
			Class<?> clazz = ClassUtils.resolveClassName(className, context.getReaderContext().getBeanClassLoader());
			if (WebArgumentResolver.class.isAssignableFrom(clazz)) {
				RootBeanDefinition adapter = new RootBeanDefinition(ServletWebArgumentResolverAdapter.class);
				adapter.getConstructorArgumentValues().addIndexedArgumentValue(0, beanDef);
				result.add(new BeanDefinitionHolder(adapter, beanDef.getBeanName() + "Adapter"));
				continue;
			}
		}
		result.add(object);
	}
	return result;
}
 

private ManagedList<?> getCallableInterceptors(Element element, Object source, ParserContext parserContext) {
	ManagedList<? super Object> interceptors = new ManagedList<Object>();
	Element asyncElement = DomUtils.getChildElementByTagName(element, "async-support");
	if (asyncElement != null) {
		Element interceptorsElement = DomUtils.getChildElementByTagName(asyncElement, "callable-interceptors");
		if (interceptorsElement != null) {
			interceptors.setSource(source);
			for (Element converter : DomUtils.getChildElementsByTagName(interceptorsElement, "bean")) {
				BeanDefinitionHolder beanDef = parserContext.getDelegate().parseBeanDefinitionElement(converter);
				beanDef = parserContext.getDelegate().decorateBeanDefinitionIfRequired(converter, beanDef);
				interceptors.add(beanDef);
			}
		}
	}
	return interceptors;
}
 

@Test
public void beanDefinitionHolderEquality() {
	RootBeanDefinition bd = new RootBeanDefinition(TestBean.class);
	bd.setAbstract(true);
	bd.setLazyInit(true);
	bd.setScope("request");
	BeanDefinitionHolder holder = new BeanDefinitionHolder(bd, "bd");
	RootBeanDefinition otherBd = new RootBeanDefinition(TestBean.class);
	assertTrue(!bd.equals(otherBd));
	assertTrue(!otherBd.equals(bd));
	otherBd.setAbstract(true);
	otherBd.setLazyInit(true);
	otherBd.setScope("request");
	BeanDefinitionHolder otherHolder = new BeanDefinitionHolder(bd, "bd");
	assertTrue(holder.equals(otherHolder));
	assertTrue(otherHolder.equals(holder));
	assertTrue(holder.hashCode() == otherHolder.hashCode());
}
 

public BeanDefinitionHolder decorateIfRequired(
		Node node, BeanDefinitionHolder originalDef, @Nullable BeanDefinition containingBd) {

	String namespaceUri = getNamespaceURI(node);
	if (namespaceUri != null && !isDefaultNamespace(namespaceUri)) {
		NamespaceHandler handler = this.readerContext.getNamespaceHandlerResolver().resolve(namespaceUri);
		if (handler != null) {
			BeanDefinitionHolder decorated =
					handler.decorate(node, originalDef, new ParserContext(this.readerContext, this, containingBd));
			if (decorated != null) {
				return decorated;
			}
		}
		else if (namespaceUri.startsWith("http://www.springframework.org/")) {
			error("Unable to locate Spring NamespaceHandler for XML schema namespace [" + namespaceUri + "]", node);
		}
		else {
			// A custom namespace, not to be handled by Spring - maybe "xml:...".
			if (logger.isDebugEnabled()) {
				logger.debug("No Spring NamespaceHandler found for XML schema namespace [" + namespaceUri + "]");
			}
		}
	}
	return originalDef;
}
 

private void registerRetrofitClient(BeanDefinitionRegistry registry,
								 AnnotationMetadata annotationMetadata, Map<String, Object> attributes) {
	String className = annotationMetadata.getClassName();
	BeanDefinitionBuilder definition = BeanDefinitionBuilder
			.genericBeanDefinition(getFactoryBeanClass());
	validate(attributes);
	definition.addPropertyValue("url", getUrl(attributes));
	String name = getName(attributes);
	definition.addPropertyValue("name", name);
	definition.addPropertyValue("type", className);
	definition.setAutowireMode(AbstractBeanDefinition.AUTOWIRE_BY_TYPE);

	String alias = name + "RetrofitClient";
	AbstractBeanDefinition beanDefinition = definition.getBeanDefinition();
	beanDefinition.setPrimary(true);

	String qualifier = getQualifier(attributes);
	if (StringUtils.hasText(qualifier)) {
		alias = qualifier;
	}

	BeanDefinitionHolder holder = new BeanDefinitionHolder(beanDefinition, className,
			new String[] { alias });
	BeanDefinitionReaderUtils.registerBeanDefinition(holder, registry);
}
 

/**
 * Register the given bean definition with the given bean factory.
 * @param definitionHolder the bean definition including name and aliases
 * @param registry the bean factory to register with
 * @throws BeanDefinitionStoreException if registration failed
 */
public static void registerBeanDefinition(
		BeanDefinitionHolder definitionHolder, BeanDefinitionRegistry registry)
		throws BeanDefinitionStoreException {

	// Register bean definition under primary name.
	String beanName = definitionHolder.getBeanName();
	registry.registerBeanDefinition(beanName, definitionHolder.getBeanDefinition());

	// Register aliases for bean name, if any.
	String[] aliases = definitionHolder.getAliases();
	if (aliases != null) {
		for (String alias : aliases) {
			registry.registerAlias(beanName, alias);
		}
	}
}
 

/**
 * 解析Node完整流程
 * 
 * @param zookeeperTemplate
 * @param source
 * @return
 * @throws UnifiedConfigException
 * @throws IOException
 * @throws ZookeeperExpcetion
 */
public List<BeanDefinitionHolder> doExecuteInBox(
		ZookeeperTemplate zookeeperTemplate, String source)
		throws UnifiedConfigException, IOException, ZookeeperExpcetion {

	// default properties
	OverrideProperties defaultProperties = getDefaultProperties(defaultPropertiesShortName);

	// read zk
	byte[] data = zookeeperTemplate.readData(znode);
	String propertiesString = new String(data);
	Properties p = defaultProperties.overrideProperties(new StringReader(
			propertiesString));
	checkProperties(p);

	// create Bean
	return CollectionUtil.gList(createFactoryBeanDefinition(p));
}
 

/**
 * Process the given bean element, parsing the bean definition
 * and registering it with the registry.
 */
protected void processBeanDefinition(Element ele, BeanDefinitionParserDelegate delegate) {
	BeanDefinitionHolder bdHolder = delegate.parseBeanDefinitionElement(ele);
	if (bdHolder != null) {
		bdHolder = delegate.decorateBeanDefinitionIfRequired(ele, bdHolder);
		try {
			// Register the final decorated instance.
			BeanDefinitionReaderUtils.registerBeanDefinition(bdHolder, getReaderContext().getRegistry());
		}
		catch (BeanDefinitionStoreException ex) {
			getReaderContext().error("Failed to register bean definition with name '" +
					bdHolder.getBeanName() + "'", ele, ex);
		}
		// Send registration event.
		getReaderContext().fireComponentRegistered(new BeanComponentDefinition(bdHolder));
	}
}
 

/**
 * Register the {@link Configuration} class itself as a bean definition.
 */
private void registerBeanDefinitionForImportedConfigurationClass(ConfigurationClass configClass) {
	AnnotationMetadata metadata = configClass.getMetadata();
	AnnotatedGenericBeanDefinition configBeanDef = new AnnotatedGenericBeanDefinition(metadata);

	ScopeMetadata scopeMetadata = scopeMetadataResolver.resolveScopeMetadata(configBeanDef);
	configBeanDef.setScope(scopeMetadata.getScopeName());
	String configBeanName = this.importBeanNameGenerator.generateBeanName(configBeanDef, this.registry);
	AnnotationConfigUtils.processCommonDefinitionAnnotations(configBeanDef, metadata);

	BeanDefinitionHolder definitionHolder = new BeanDefinitionHolder(configBeanDef, configBeanName);
	definitionHolder = AnnotationConfigUtils.applyScopedProxyMode(scopeMetadata, definitionHolder, this.registry);
	this.registry.registerBeanDefinition(definitionHolder.getBeanName(), definitionHolder.getBeanDefinition());
	configClass.setBeanName(configBeanName);

	if (logger.isDebugEnabled()) {
		logger.debug("Registered bean definition for imported class '" + configBeanName + "'");
	}
}
 

/**
 * Iterates through the set values and calls helpers to process the value
 *
 * @param setVal the set to process
 * @param propertyName name of the property which has the set value
 * @param nestedBeanStack stack of bean containers which contains the set property
 */
protected void visitSet(Set setVal, String propertyName, Stack<BeanDefinitionHolder> nestedBeanStack) {
    boolean isMergeEnabled = false;
    if (setVal instanceof ManagedSet) {
        isMergeEnabled = ((ManagedSet) setVal).isMergeEnabled();
    }

    ManagedSet newSet = new ManagedSet();
    newSet.setMergeEnabled(isMergeEnabled);

    for (Object elem : setVal) {
        if (isStringValue(elem)) {
            elem = processSetStringPropertyValue(propertyName, setVal, getString(elem), nestedBeanStack,
                    beanProcessors);
        } else {
            elem = visitPropertyValue(propertyName, elem, nestedBeanStack);
        }

        newSet.add(elem);
    }

    setVal.clear();
    setVal.addAll(newSet);
}
 

/**
 * Decorates the supplied {@link Node} by delegating to the {@link BeanDefinitionDecorator} that
 * is registered to handle that {@link Node}.
 */
@Override
@Nullable
public BeanDefinitionHolder decorate(
		Node node, BeanDefinitionHolder definition, ParserContext parserContext) {

	BeanDefinitionDecorator decorator = findDecoratorForNode(node, parserContext);
	return (decorator != null ? decorator.decorate(node, definition, parserContext) : null);
}
 

protected void registerComponent(BeanDefinitionRegistry registry, AnnotationMetadata annotationMetadata, AnnotationAttributes tagAttributes) {
	String className = annotationMetadata.getClassName();
	String beanName = resolveName(tagAttributes, className);
	if(logger.isInfoEnabled()){
		logger.info("register api client beanName: {}, class: {}", beanName, className);
	}
	
	BeanDefinitionBuilder definition = createComponentFactoryBeanBuilder(annotationMetadata, tagAttributes);
	
	String alias = beanName + "-" + getComponentAnnotationClass().getSimpleName();
	AbstractBeanDefinition beanDefinition = definition.getBeanDefinition();
	beanDefinition.setPrimary(true);
	BeanDefinitionHolder holder = new BeanDefinitionHolder(beanDefinition, beanName, new String[] { alias });
	BeanDefinitionReaderUtils.registerBeanDefinition(holder, registry);
}
 

/**
 * Parses a bean of the custom namespace.
 *
 * @param tag - The Element to be parsed.
 * @param parent - The parent bean that the tag is nested in.
 * @param parserContext - Provided information and functionality regarding current bean set.
 * @return The parsed bean.
 */
protected Object parseCustomBean(Element tag, BeanDefinitionBuilder parent, ParserContext parserContext) {
    BeanDefinition beanDefinition = parserContext.getDelegate().parseCustomElement(tag, parent.getBeanDefinition());

    String name = beanDefinition.getParentName() + "$Customchild" + beanNumber;
    if (tag.getAttribute("id") != null && !StringUtils.isEmpty(tag.getAttribute("id"))) {
        name = tag.getAttribute("id");
    } else {
        beanNumber++;
    }

    return new BeanDefinitionHolder(beanDefinition, name);
}
 

/**
 * Perform a scan within the specified base packages,
 * returning the registered bean definitions.
 * <p>This method does <i>not</i> register an annotation config processor
 * but rather leaves this up to the caller.
 * @param basePackages the packages to check for annotated classes
 * @return set of beans registered if any for tooling registration purposes (never {@code null})
 */
protected Set<BeanDefinitionHolder> doScan(String... basePackages) {
	Assert.notEmpty(basePackages, "At least one base package must be specified");
	Set<BeanDefinitionHolder> beanDefinitions = new LinkedHashSet<>();
	for (String basePackage : basePackages) {
		Set<BeanDefinition> candidates = findCandidateComponents(basePackage);
		for (BeanDefinition candidate : candidates) {
			ScopeMetadata scopeMetadata = this.scopeMetadataResolver.resolveScopeMetadata(candidate);
			candidate.setScope(scopeMetadata.getScopeName());
			String beanName = this.beanNameGenerator.generateBeanName(candidate, this.registry);
			if (candidate instanceof AbstractBeanDefinition) {
				postProcessBeanDefinition((AbstractBeanDefinition) candidate, beanName);
			}
			if (candidate instanceof AnnotatedBeanDefinition) {
				AnnotationConfigUtils.processCommonDefinitionAnnotations((AnnotatedBeanDefinition) candidate);
			}
			if (checkCandidate(beanName, candidate)) {
				BeanDefinitionHolder definitionHolder = new BeanDefinitionHolder(candidate, beanName);
				definitionHolder =
						AnnotationConfigUtils.applyScopedProxyMode(scopeMetadata, definitionHolder, this.registry);
				beanDefinitions.add(definitionHolder);
				registerBeanDefinition(definitionHolder, this.registry);
			}
		}
	}
	return beanDefinitions;
}
 

/**
 * Invokes the processors to handle an array string value (which may be changed)
 *
 * @param propertyName name of the property that is being processed
 * @param propertyValue the array which contains the string
 * @param elementValue the string element value
 * @param elementIndex the index of the string within the array
 * @param nestedBeanStack the stack of bean containers, including the bean that contains the property
 * @return String new property value (possibly modified by processors)
 */
protected String processArrayStringPropertyValue(String propertyName, Object[] propertyValue, String elementValue,
        int elementIndex, Stack<BeanDefinitionHolder> nestedBeanStack,
        List<DictionaryBeanProcessor> beanProcessors) {
    String processedStringValue = elementValue;

    for (DictionaryBeanProcessor beanProcessor : beanProcessors) {
        processedStringValue = beanProcessor.processArrayStringPropertyValue(propertyName, propertyValue,
                elementValue, elementIndex, nestedBeanStack);
    }

    return processedStringValue;
}
 

@Override
public BeanDefinition parse(Element element, ParserContext parserContext) {
	String basePackage = element.getAttribute(BASE_PACKAGE_ATTRIBUTE);
	basePackage = parserContext.getReaderContext().getEnvironment().resolvePlaceholders(basePackage);
	String[] basePackages = StringUtils.tokenizeToStringArray(basePackage,
			ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);

	// Actually scan for bean definitions and register them.
	ClassPathBeanDefinitionScanner scanner = configureScanner(parserContext, element);
	Set<BeanDefinitionHolder> beanDefinitions = scanner.doScan(basePackages);
	registerComponents(parserContext.getReaderContext(), beanDefinitions, element);

	return null;
}
 

protected RootBeanDefinition getResolvedDecoratedDefinition(RootBeanDefinition rbd) {
	BeanDefinitionHolder decDef = rbd.getDecoratedDefinition();
	if (decDef != null && this.beanFactory instanceof ConfigurableListableBeanFactory) {
		ConfigurableListableBeanFactory clbf = (ConfigurableListableBeanFactory) this.beanFactory;
		if (clbf.containsBeanDefinition(decDef.getBeanName())) {
			BeanDefinition dbd = clbf.getMergedBeanDefinition(decDef.getBeanName());
			if (dbd instanceof RootBeanDefinition) {
				return (RootBeanDefinition) dbd;
			}
		}
	}
	return null;
}
 

@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;
}
 

private String concatNames(List<BeanDefinitionHolder> holders) {
	Iterator<BeanDefinitionHolder> it = holders.iterator();
	StringBuilder builder = new StringBuilder();
	while (it.hasNext()) {
		String part = it.next().getBeanName();
		builder.append(part);
		if (it.hasNext()) {
			builder.append(",");
		}
	}
	return builder.toString();
}
 

/**
 * Perform a scan within the specified base packages,
 * returning the registered bean definitions.
 * <p>This method does <i>not</i> register an annotation config processor
 * but rather leaves this up to the caller.
 * @param basePackages the packages to check for annotated classes
 * @return set of beans registered if any for tooling registration purposes (never {@code null})
 */
protected Set<BeanDefinitionHolder> doScan(String... basePackages) {
	Assert.notEmpty(basePackages, "At least one base package must be specified");
	Set<BeanDefinitionHolder> beanDefinitions = new LinkedHashSet<BeanDefinitionHolder>();
	for (String basePackage : basePackages) {
		Set<BeanDefinition> candidates = findCandidateComponents(basePackage);
		for (BeanDefinition candidate : candidates) {
			ScopeMetadata scopeMetadata = this.scopeMetadataResolver.resolveScopeMetadata(candidate);
			candidate.setScope(scopeMetadata.getScopeName());
			String beanName = this.beanNameGenerator.generateBeanName(candidate, this.registry);
			if (candidate instanceof AbstractBeanDefinition) {
				postProcessBeanDefinition((AbstractBeanDefinition) candidate, beanName);
			}
			if (candidate instanceof AnnotatedBeanDefinition) {
				AnnotationConfigUtils.processCommonDefinitionAnnotations((AnnotatedBeanDefinition) candidate);
			}
			if (checkCandidate(beanName, candidate)) {
				BeanDefinitionHolder definitionHolder = new BeanDefinitionHolder(candidate, beanName);
				definitionHolder =
						AnnotationConfigUtils.applyScopedProxyMode(scopeMetadata, definitionHolder, this.registry);
				beanDefinitions.add(definitionHolder);
				registerBeanDefinition(definitionHolder, this.registry);
			}
		}
	}
	return beanDefinitions;
}
 

@Override
public boolean isAutowireCandidate(BeanDefinitionHolder bdHolder, DependencyDescriptor descriptor) {
	if (!bdHolder.getBeanDefinition().isAutowireCandidate()) {
		return false;
	}
	if (!bdHolder.getBeanName().matches("[a-z-]+")) {
		return false;
	}
	if (bdHolder.getBeanDefinition().getAttribute("priority").equals("1")) {
		return true;
	}
	return false;
}