@SuppressWarnings("unchecked")
 public void handleListenersElement(
     Element stepElement, BeanDefinition beanDefinition, ParserContext parserContext) {
   MutablePropertyValues propertyValues = beanDefinition.getPropertyValues();
   List<Element> listenersElements =
       DomUtils.getChildElementsByTagName(stepElement, LISTENERS_ELE);
   if (listenersElements.size() == 1) {
     Element listenersElement = listenersElements.get(0);
     CompositeComponentDefinition compositeDef =
         new CompositeComponentDefinition(
             listenersElement.getTagName(), parserContext.extractSource(stepElement));
     parserContext.pushContainingComponent(compositeDef);
     ManagedList listenerBeans = new ManagedList();
     if (propertyValues.contains("listeners")) {
       listenerBeans = (ManagedList) propertyValues.getPropertyValue("listeners").getValue();
     }
     listenerBeans.setMergeEnabled(
         listenersElement.hasAttribute(MERGE_ATTR)
             && Boolean.valueOf(listenersElement.getAttribute(MERGE_ATTR)));
     List<Element> listenerElements =
         DomUtils.getChildElementsByTagName(listenersElement, "listener");
     if (listenerElements != null) {
       for (Element listenerElement : listenerElements) {
         listenerBeans.add(parse(listenerElement, parserContext));
       }
     }
     propertyValues.addPropertyValue("listeners", listenerBeans);
     parserContext.popAndRegisterContainingComponent();
   }
 }
  @Override
  public BeanDefinition parse(Element element, ParserContext parserContext) {
    Object source = parserContext.extractSource(element);

    CompositeComponentDefinition compDefinition =
        new CompositeComponentDefinition(element.getTagName(), source);
    parserContext.pushContainingComponent(compDefinition);

    BeanDefinitionRegistry registry = parserContext.getRegistry();

    if (registry.containsBeanDefinition(STAT_ANNOTATION_PROCESSOR_BEAN_NAME)) {
      parserContext
          .getReaderContext()
          .error("Only one DruidStatBeanDefinitionParser may exist within the context.", source);
    } else {
      BeanDefinitionBuilder builder =
          BeanDefinitionBuilder.genericBeanDefinition(STAT_ANNOTATION_PROCESSOR_BEAN_CLASS);
      builder.getRawBeanDefinition().setSource(source);
      registerComponent(parserContext, builder, STAT_ANNOTATION_PROCESSOR_BEAN_NAME);
    }

    if (!registry.containsBeanDefinition(STAT_ANNOTATION_ADVICE_BEAN_NAME)) {
      BeanDefinitionBuilder builder =
          BeanDefinitionBuilder.genericBeanDefinition(STAT_ANNOTATION_ADVICE_BEAN_CLASS);
      builder.getRawBeanDefinition().setSource(source);
      registerComponent(parserContext, builder, STAT_ANNOTATION_ADVICE_BEAN_NAME);
    }

    parserContext.popAndRegisterContainingComponent();

    return null;
  }
  private ManagedList<AbstractBeanDefinition> parseListeners(
      Element element, ParserContext parserContext) {
    List<Element> listenersElements =
        DomUtils.getChildElementsByTagName(element, LISTENERS_ELEMENT);

    ManagedList<AbstractBeanDefinition> listeners = new ManagedList<AbstractBeanDefinition>();

    if (listenersElements.size() == 1) {
      Element listenersElement = listenersElements.get(0);
      CompositeComponentDefinition compositeDef =
          new CompositeComponentDefinition(
              listenersElement.getTagName(), parserContext.extractSource(element));
      parserContext.pushContainingComponent(compositeDef);
      listeners.setMergeEnabled(false);
      List<Element> listenerElements =
          DomUtils.getChildElementsByTagName(listenersElement, LISTENER_ELEMENT);
      for (Element listenerElement : listenerElements) {
        BeanDefinitionBuilder bd = BeanDefinitionBuilder.genericBeanDefinition(listenerType);
        bd.addPropertyValue(
            "delegate", new RuntimeBeanReference(listenerElement.getAttribute(REF_ATTRIBUTE)));
        listeners.add(bd.getBeanDefinition());
      }
      parserContext.popAndRegisterContainingComponent();
    } else if (listenersElements.size() > 1) {
      parserContext
          .getReaderContext()
          .error(
              "The '<listeners/>' element may not appear more than once in a single <job/>.",
              element);
    }

    return listeners;
  }
  /* (non-Javadoc)
   * @see org.springframework.beans.factory.xml.BeanDefinitionParser#parse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
   */
  @Override
  public BeanDefinition parse(Element element, ParserContext parserContext) {
    Object source = parserContext.extractSource(element);

    CompositeComponentDefinition compDefinition =
        new CompositeComponentDefinition(element.getTagName(), source);
    parserContext.pushContainingComponent(compDefinition);

    VertxConfigUtils.registerAnnotationComponents(parserContext, source);
    parserContext.popAndRegisterContainingComponent();

    return null;
  }
  /**
   * Load the template BeanDefinition and call {@link #transform(ConfigurableListableBeanFactory,
   * BeanDefinition, Element, ParserContext)} to apply runtime configuration value to it. <code>
   * builder</code> will be configured to instantiate the bean in the Spring context that we are
   * parsing.
   *
   * <p>During parsing, an instance of {@link
   * TemplateBeanDefinitionParser.TemplateComponentDefinition} is pushed onto <code>ParserContext
   * </code> so that nested tags can access the enclosing template configuration with a call to
   * {@link #findEnclosingTemplateFactory(ParserContext)}. Subclasses can override {@link
   * #newComponentDefinition(String, Object, DefaultListableBeanFactory)} to provide a subclass of
   * {@link TemplateBeanDefinitionParser.TemplateComponentDefinition} to the parser context if
   * necessary.
   */
  @Override
  protected final void doParse(
      Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {

    // if we have multiple nested bean definitions, we only parse the template factory
    // once.  this allows configuration changes made by enclosing bean parsers to be inherited
    // by contained beans, which is quite useful.
    DefaultListableBeanFactory templateFactory = findEnclosingTemplateFactory(parserContext);
    TemplateComponentDefinition tcd = null;
    if (templateFactory == null) {

      // no nesting -- load the template XML configuration from the classpath.
      final BeanFactory parentFactory = (BeanFactory) parserContext.getRegistry();
      templateFactory = new DefaultListableBeanFactory(parentFactory);

      // load template bean definitions
      DefaultResourceLoader loader = new DefaultResourceLoader();
      XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(templateFactory);
      reader.setResourceLoader(loader);
      reader.setEntityResolver(new ResourceEntityResolver(loader));
      reader.loadBeanDefinitions(templateResource);

      // propagate factory post-processors from the source factory into the template
      // factory.
      BeanDefinition ppChain = new RootBeanDefinition(ChainingBeanFactoryPostProcessor.class);
      ppChain.getPropertyValues().addPropertyValue("targetFactory", templateFactory);
      parserContext.getReaderContext().registerWithGeneratedName(ppChain);

      // push component definition onto the parser stack for the benefit of
      // nested bean definitions.
      tcd =
          newComponentDefinition(
              element.getNodeName(), parserContext.extractSource(element), templateFactory);
      parserContext.pushContainingComponent(tcd);
    }

    try {
      // allow subclasses to apply overrides to the template bean definition.
      BeanDefinition def = templateFactory.getBeanDefinition(templateId);
      transform(templateFactory, def, element, parserContext);

      // setup our factory bean to instantiate the modified bean definition upon request.
      builder.addPropertyValue("beanFactory", templateFactory);
      builder.addPropertyValue("beanName", templateId);
      builder.getRawBeanDefinition().setAttribute("id", def.getAttribute("id"));

    } finally {
      if (tcd != null) parserContext.popContainingComponent();
    }
  }
  public BeanDefinition parse(Element element, ParserContext pc) {
    Assert.state(
        !pc.getRegistry().containsBeanDefinition(BeanIds.AUTHENTICATION_MANAGER),
        "AuthenticationManager has already been registered!");
    pc.pushContainingComponent(
        new CompositeComponentDefinition(element.getTagName(), pc.extractSource(element)));

    BeanDefinitionBuilder providerManagerBldr =
        BeanDefinitionBuilder.rootBeanDefinition(ProviderManager.class);

    String alias = element.getAttribute(ATT_ALIAS);

    checkForDeprecatedSessionControllerRef(element, pc);
    List<BeanMetadataElement> providers = new ManagedList<BeanMetadataElement>();
    NamespaceHandlerResolver resolver = pc.getReaderContext().getNamespaceHandlerResolver();

    NodeList children = element.getChildNodes();

    for (int i = 0; i < children.getLength(); i++) {
      Node node = children.item(i);
      if (node instanceof Element) {
        Element providerElt = (Element) node;
        if (StringUtils.hasText(providerElt.getAttribute(ATT_REF))) {
          providers.add(new RuntimeBeanReference(providerElt.getAttribute(ATT_REF)));
        } else {
          BeanDefinition provider =
              resolver.resolve(providerElt.getNamespaceURI()).parse(providerElt, pc);
          Assert.notNull(
              provider,
              "Parser for " + providerElt.getNodeName() + " returned a null bean definition");
          String id = pc.getReaderContext().generateBeanName(provider);
          pc.registerBeanComponent(new BeanComponentDefinition(provider, id));
          providers.add(new RuntimeBeanReference(id));
        }
      }
    }

    if (providers.isEmpty()) {
      providers.add(new RootBeanDefinition(NullAuthenticationProvider.class));
    }

    providerManagerBldr.addPropertyValue("providers", providers);
    // Add the default event publisher
    BeanDefinition publisher = new RootBeanDefinition(DefaultAuthenticationEventPublisher.class);
    String id = pc.getReaderContext().generateBeanName(publisher);
    pc.registerBeanComponent(new BeanComponentDefinition(publisher, id));
    providerManagerBldr.addPropertyReference("authenticationEventPublisher", id);

    pc.registerBeanComponent(
        new BeanComponentDefinition(
            providerManagerBldr.getBeanDefinition(), BeanIds.AUTHENTICATION_MANAGER));

    if (StringUtils.hasText(alias)) {
      pc.getRegistry().registerAlias(BeanIds.AUTHENTICATION_MANAGER, alias);
      pc.getReaderContext()
          .fireAliasRegistered(BeanIds.AUTHENTICATION_MANAGER, alias, pc.extractSource(element));
    }

    pc.popAndRegisterContainingComponent();

    return null;
  }
  @Override
  public BeanDefinition parse(Element element, ParserContext parserContext) {
    Object source = parserContext.extractSource(element);
    XmlReaderContext readerContext = parserContext.getReaderContext();

    CompositeComponentDefinition compDefinition =
        new CompositeComponentDefinition(element.getTagName(), source);
    parserContext.pushContainingComponent(compDefinition);

    RuntimeBeanReference contentNegotiationManager =
        getContentNegotiationManager(element, source, parserContext);

    RootBeanDefinition handlerMappingDef =
        new RootBeanDefinition(RequestMappingHandlerMapping.class);
    handlerMappingDef.setSource(source);
    handlerMappingDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    handlerMappingDef.getPropertyValues().add("order", 0);
    handlerMappingDef
        .getPropertyValues()
        .add("contentNegotiationManager", contentNegotiationManager);

    if (element.hasAttribute("enable-matrix-variables")) {
      Boolean enableMatrixVariables =
          Boolean.valueOf(element.getAttribute("enable-matrix-variables"));
      handlerMappingDef.getPropertyValues().add("removeSemicolonContent", !enableMatrixVariables);
    } else if (element.hasAttribute("enableMatrixVariables")) {
      Boolean enableMatrixVariables =
          Boolean.valueOf(element.getAttribute("enableMatrixVariables"));
      handlerMappingDef.getPropertyValues().add("removeSemicolonContent", !enableMatrixVariables);
    }

    configurePathMatchingProperties(handlerMappingDef, element, parserContext);
    readerContext
        .getRegistry()
        .registerBeanDefinition(HANDLER_MAPPING_BEAN_NAME, handlerMappingDef);

    RuntimeBeanReference corsConfigurationsRef =
        MvcNamespaceUtils.registerCorsConfigurations(null, parserContext, source);
    handlerMappingDef.getPropertyValues().add("corsConfigurations", corsConfigurationsRef);

    RuntimeBeanReference conversionService = getConversionService(element, source, parserContext);
    RuntimeBeanReference validator = getValidator(element, source, parserContext);
    RuntimeBeanReference messageCodesResolver = getMessageCodesResolver(element);

    RootBeanDefinition bindingDef = new RootBeanDefinition(ConfigurableWebBindingInitializer.class);
    bindingDef.setSource(source);
    bindingDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    bindingDef.getPropertyValues().add("conversionService", conversionService);
    bindingDef.getPropertyValues().add("validator", validator);
    bindingDef.getPropertyValues().add("messageCodesResolver", messageCodesResolver);

    ManagedList<?> messageConverters = getMessageConverters(element, source, parserContext);
    ManagedList<?> argumentResolvers = getArgumentResolvers(element, parserContext);
    ManagedList<?> returnValueHandlers = getReturnValueHandlers(element, parserContext);
    String asyncTimeout = getAsyncTimeout(element);
    RuntimeBeanReference asyncExecutor = getAsyncExecutor(element);
    ManagedList<?> callableInterceptors = getCallableInterceptors(element, source, parserContext);
    ManagedList<?> deferredResultInterceptors =
        getDeferredResultInterceptors(element, source, parserContext);

    RootBeanDefinition handlerAdapterDef =
        new RootBeanDefinition(RequestMappingHandlerAdapter.class);
    handlerAdapterDef.setSource(source);
    handlerAdapterDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    handlerAdapterDef
        .getPropertyValues()
        .add("contentNegotiationManager", contentNegotiationManager);
    handlerAdapterDef.getPropertyValues().add("webBindingInitializer", bindingDef);
    handlerAdapterDef.getPropertyValues().add("messageConverters", messageConverters);
    addRequestBodyAdvice(handlerAdapterDef);
    addResponseBodyAdvice(handlerAdapterDef);

    if (element.hasAttribute("ignore-default-model-on-redirect")) {
      Boolean ignoreDefaultModel =
          Boolean.valueOf(element.getAttribute("ignore-default-model-on-redirect"));
      handlerAdapterDef.getPropertyValues().add("ignoreDefaultModelOnRedirect", ignoreDefaultModel);
    } else if (element.hasAttribute("ignoreDefaultModelOnRedirect")) {
      // "ignoreDefaultModelOnRedirect" spelling is deprecated
      Boolean ignoreDefaultModel =
          Boolean.valueOf(element.getAttribute("ignoreDefaultModelOnRedirect"));
      handlerAdapterDef.getPropertyValues().add("ignoreDefaultModelOnRedirect", ignoreDefaultModel);
    }

    if (argumentResolvers != null) {
      handlerAdapterDef.getPropertyValues().add("customArgumentResolvers", argumentResolvers);
    }
    if (returnValueHandlers != null) {
      handlerAdapterDef.getPropertyValues().add("customReturnValueHandlers", returnValueHandlers);
    }
    if (asyncTimeout != null) {
      handlerAdapterDef.getPropertyValues().add("asyncRequestTimeout", asyncTimeout);
    }
    if (asyncExecutor != null) {
      handlerAdapterDef.getPropertyValues().add("taskExecutor", asyncExecutor);
    }

    handlerAdapterDef.getPropertyValues().add("callableInterceptors", callableInterceptors);
    handlerAdapterDef
        .getPropertyValues()
        .add("deferredResultInterceptors", deferredResultInterceptors);
    readerContext
        .getRegistry()
        .registerBeanDefinition(HANDLER_ADAPTER_BEAN_NAME, handlerAdapterDef);

    String uriCompContribName = MvcUriComponentsBuilder.MVC_URI_COMPONENTS_CONTRIBUTOR_BEAN_NAME;
    RootBeanDefinition uriCompContribDef =
        new RootBeanDefinition(CompositeUriComponentsContributorFactoryBean.class);
    uriCompContribDef.setSource(source);
    uriCompContribDef.getPropertyValues().addPropertyValue("handlerAdapter", handlerAdapterDef);
    uriCompContribDef.getPropertyValues().addPropertyValue("conversionService", conversionService);
    readerContext.getRegistry().registerBeanDefinition(uriCompContribName, uriCompContribDef);

    RootBeanDefinition csInterceptorDef =
        new RootBeanDefinition(ConversionServiceExposingInterceptor.class);
    csInterceptorDef.setSource(source);
    csInterceptorDef.getConstructorArgumentValues().addIndexedArgumentValue(0, conversionService);
    RootBeanDefinition mappedCsInterceptorDef = new RootBeanDefinition(MappedInterceptor.class);
    mappedCsInterceptorDef.setSource(source);
    mappedCsInterceptorDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    mappedCsInterceptorDef.getConstructorArgumentValues().addIndexedArgumentValue(0, (Object) null);
    mappedCsInterceptorDef
        .getConstructorArgumentValues()
        .addIndexedArgumentValue(1, csInterceptorDef);
    String mappedInterceptorName = readerContext.registerWithGeneratedName(mappedCsInterceptorDef);

    RootBeanDefinition exceptionHandlerExceptionResolver =
        new RootBeanDefinition(ExceptionHandlerExceptionResolver.class);
    exceptionHandlerExceptionResolver.setSource(source);
    exceptionHandlerExceptionResolver.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    exceptionHandlerExceptionResolver
        .getPropertyValues()
        .add("contentNegotiationManager", contentNegotiationManager);
    exceptionHandlerExceptionResolver
        .getPropertyValues()
        .add("messageConverters", messageConverters);
    exceptionHandlerExceptionResolver.getPropertyValues().add("order", 0);
    addResponseBodyAdvice(exceptionHandlerExceptionResolver);

    String methodExceptionResolverName =
        readerContext.registerWithGeneratedName(exceptionHandlerExceptionResolver);

    RootBeanDefinition responseStatusExceptionResolver =
        new RootBeanDefinition(ResponseStatusExceptionResolver.class);
    responseStatusExceptionResolver.setSource(source);
    responseStatusExceptionResolver.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    responseStatusExceptionResolver.getPropertyValues().add("order", 1);
    String responseStatusExceptionResolverName =
        readerContext.registerWithGeneratedName(responseStatusExceptionResolver);

    RootBeanDefinition defaultExceptionResolver =
        new RootBeanDefinition(DefaultHandlerExceptionResolver.class);
    defaultExceptionResolver.setSource(source);
    defaultExceptionResolver.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
    defaultExceptionResolver.getPropertyValues().add("order", 2);
    String defaultExceptionResolverName =
        readerContext.registerWithGeneratedName(defaultExceptionResolver);

    parserContext.registerComponent(
        new BeanComponentDefinition(handlerMappingDef, HANDLER_MAPPING_BEAN_NAME));
    parserContext.registerComponent(
        new BeanComponentDefinition(handlerAdapterDef, HANDLER_ADAPTER_BEAN_NAME));
    parserContext.registerComponent(
        new BeanComponentDefinition(uriCompContribDef, uriCompContribName));
    parserContext.registerComponent(
        new BeanComponentDefinition(
            exceptionHandlerExceptionResolver, methodExceptionResolverName));
    parserContext.registerComponent(
        new BeanComponentDefinition(
            responseStatusExceptionResolver, responseStatusExceptionResolverName));
    parserContext.registerComponent(
        new BeanComponentDefinition(defaultExceptionResolver, defaultExceptionResolverName));
    parserContext.registerComponent(
        new BeanComponentDefinition(mappedCsInterceptorDef, mappedInterceptorName));

    // Ensure BeanNameUrlHandlerMapping (SPR-8289) and default HandlerAdapters are not "turned off"
    MvcNamespaceUtils.registerDefaultComponents(parserContext, source);

    parserContext.popAndRegisterContainingComponent();

    return null;
  }