Java ConfigurableListableBeanFactory.containsBean方法代碼示例

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; //導入方法依賴的package包/類
/**
 * Finish the initialization of this context's bean factory,
 * initializing all remaining singleton beans.
 */
protected void finishBeanFactoryInitialization(ConfigurableListableBeanFactory beanFactory) {
	// Initialize conversion service for this context.
	if (beanFactory.containsBean(CONVERSION_SERVICE_BEAN_NAME) &&
			beanFactory.isTypeMatch(CONVERSION_SERVICE_BEAN_NAME, ConversionService.class)) {
		beanFactory.setConversionService(
				beanFactory.getBean(CONVERSION_SERVICE_BEAN_NAME, ConversionService.class));
	}

	// Initialize LoadTimeWeaverAware beans early to allow for registering their transformers early.
	String[] weaverAwareNames = beanFactory.getBeanNamesForType(LoadTimeWeaverAware.class, false, false);
	for (String weaverAwareName : weaverAwareNames) {
		getBean(weaverAwareName);
	}

	// Stop using the temporary ClassLoader for type matching.
	beanFactory.setTempClassLoader(null);

	// Allow for caching all bean definition metadata, not expecting further changes.
	beanFactory.freezeConfiguration();

	// Instantiate all remaining (non-lazy-init) singletons.
	beanFactory.preInstantiateSingletons();
}
 

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; //導入方法依賴的package包/類
/**
 * Obtain a bean of type {@code T} from the given {@code BeanFactory} declaring a qualifier
 * (e.g. {@code <qualifier>} or {@code @Qualifier}) matching the given qualifier).
 * @param bf the BeanFactory to get the target bean from
 * @param beanType the type of bean to retrieve
 * @param qualifier the qualifier for selecting between multiple bean matches
 * @return the matching bean of type {@code T} (never {@code null})
 * @throws NoSuchBeanDefinitionException if no matching bean of type {@code T} found
 */
private static <T> T qualifiedBeanOfType(ConfigurableListableBeanFactory bf, Class<T> beanType, String qualifier) {
	Map<String, T> candidateBeans = BeanFactoryUtils.beansOfTypeIncludingAncestors(bf, beanType);
	T matchingBean = null;
	for (String beanName : candidateBeans.keySet()) {
		if (isQualifierMatch(qualifier, beanName, bf)) {
			if (matchingBean != null) {
				throw new NoSuchBeanDefinitionException(qualifier, "No unique " + beanType.getSimpleName() +
						" bean found for qualifier '" + qualifier + "'");
			}
			matchingBean = candidateBeans.get(beanName);
		}
	}
	if (matchingBean != null) {
		return matchingBean;
	}
	else if (bf.containsBean(qualifier)) {
		// Fallback: target bean at least found by bean name - probably a manually registered singleton.
		return bf.getBean(qualifier, beanType);
	}
	else {
		throw new NoSuchBeanDefinitionException(qualifier, "No matching " + beanType.getSimpleName() +
				" bean found for qualifier '" + qualifier + "' - neither qualifier match nor bean name match!");
	}
}
 

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; //導入方法依賴的package包/類
/**
 * @see org.springframework.beans.factory.config.BeanFactoryPostProcessor#postProcessBeanFactory(org.springframework.beans.factory.config.ConfigurableListableBeanFactory)
 */
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
{
    ParameterCheck.mandatory("beanName", beanName);
    ParameterCheck.mandatory("extendingBeanName", extendingBeanName);

    // check for bean name
    if (!beanFactory.containsBean(beanName))
    {
        throw new NoSuchBeanDefinitionException("Can't find bean '" + beanName + "' to be extended.");
    }

    // check for extending bean
    if (!beanFactory.containsBean(extendingBeanName))
    {
        throw new NoSuchBeanDefinitionException("Can't find bean '" + extendingBeanName + "' that is going to extend original bean definition.");
    }

    // get the bean definitions
    BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName);
    BeanDefinition extendingBeanDefinition = beanFactory.getBeanDefinition(extendingBeanName);

    // update class
    if (StringUtils.isNotBlank(extendingBeanDefinition.getBeanClassName()) &&
        !beanDefinition.getBeanClassName().equals(extendingBeanDefinition.getBeanClassName()))
    {
        beanDefinition.setBeanClassName(extendingBeanDefinition.getBeanClassName());
    }

    // update properties
    MutablePropertyValues properties = beanDefinition.getPropertyValues();
    MutablePropertyValues extendingProperties = extendingBeanDefinition.getPropertyValues();
    for (PropertyValue propertyValue : extendingProperties.getPropertyValueList())
    {
        properties.add(propertyValue.getName(), propertyValue.getValue());
    }
}
 

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; //導入方法依賴的package包/類
private boolean containsBean(ConfigurableListableBeanFactory beanFactory,
                             String beanName, boolean considerHierarchy) {
    if (considerHierarchy) {
        return beanFactory.containsBean(beanName);
    }
    return beanFactory.containsLocalBean(beanName);
}
 

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; //導入方法依賴的package包/類
/**
 * Configure the factory's standard context characteristics,
 * such as the context's ClassLoader and post-processors.
 * @param beanFactory the BeanFactory to configure
 */
protected void prepareBeanFactory(ConfigurableListableBeanFactory beanFactory) {
	// Tell the internal bean factory to use the context's class loader etc.
	beanFactory.setBeanClassLoader(getClassLoader());
	beanFactory.setBeanExpressionResolver(new StandardBeanExpressionResolver());
	beanFactory.addPropertyEditorRegistrar(new ResourceEditorRegistrar(this, getEnvironment()));

	// Configure the bean factory with context callbacks.
	beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this));
	beanFactory.ignoreDependencyInterface(ResourceLoaderAware.class);
	beanFactory.ignoreDependencyInterface(ApplicationEventPublisherAware.class);
	beanFactory.ignoreDependencyInterface(MessageSourceAware.class);
	beanFactory.ignoreDependencyInterface(ApplicationContextAware.class);
	beanFactory.ignoreDependencyInterface(EnvironmentAware.class);

	// BeanFactory interface not registered as resolvable type in a plain factory.
	// MessageSource registered (and found for autowiring) as a bean.
	beanFactory.registerResolvableDependency(BeanFactory.class, beanFactory);
	beanFactory.registerResolvableDependency(ResourceLoader.class, this);
	beanFactory.registerResolvableDependency(ApplicationEventPublisher.class, this);
	beanFactory.registerResolvableDependency(ApplicationContext.class, this);

	// Detect a LoadTimeWeaver and prepare for weaving, if found.
	if (beanFactory.containsBean(LOAD_TIME_WEAVER_BEAN_NAME)) {
		beanFactory.addBeanPostProcessor(new LoadTimeWeaverAwareProcessor(beanFactory));
		// Set a temporary ClassLoader for type matching.
		beanFactory.setTempClassLoader(new ContextTypeMatchClassLoader(beanFactory.getBeanClassLoader()));
	}

	// Register default environment beans.
	if (!beanFactory.containsLocalBean(ENVIRONMENT_BEAN_NAME)) {
		beanFactory.registerSingleton(ENVIRONMENT_BEAN_NAME, getEnvironment());
	}
	if (!beanFactory.containsLocalBean(SYSTEM_PROPERTIES_BEAN_NAME)) {
		beanFactory.registerSingleton(SYSTEM_PROPERTIES_BEAN_NAME, getEnvironment().getSystemProperties());
	}
	if (!beanFactory.containsLocalBean(SYSTEM_ENVIRONMENT_BEAN_NAME)) {
		beanFactory.registerSingleton(SYSTEM_ENVIRONMENT_BEAN_NAME, getEnvironment().getSystemEnvironment());
	}
}
 

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; //導入方法依賴的package包/類
/**
 * Check whether the named bean declares a qualifier of the given name.
 * @param qualifier the qualifier to match
 * @param beanName the name of the candidate bean
 * @param bf the {@code BeanFactory} from which to retrieve the named bean
 * @return {@code true} if either the bean definition (in the XML case)
 * or the bean's factory method (in the {@code @Bean} case) defines a matching
 * qualifier value (through {@code <qualifier>} or {@code @Qualifier})
 */
private static boolean isQualifierMatch(String qualifier, String beanName, ConfigurableListableBeanFactory bf) {
	if (bf.containsBean(beanName)) {
		try {
			BeanDefinition bd = bf.getMergedBeanDefinition(beanName);
			if (bd instanceof AbstractBeanDefinition) {
				AbstractBeanDefinition abd = (AbstractBeanDefinition) bd;
				AutowireCandidateQualifier candidate = abd.getQualifier(Qualifier.class.getName());
				if ((candidate != null && qualifier.equals(candidate.getAttribute(AutowireCandidateQualifier.VALUE_KEY))) ||
						qualifier.equals(beanName) || ObjectUtils.containsElement(bf.getAliases(beanName), qualifier)) {
					return true;
				}
			}
			if (bd instanceof RootBeanDefinition) {
				Method factoryMethod = ((RootBeanDefinition) bd).getResolvedFactoryMethod();
				if (factoryMethod != null) {
					Qualifier targetAnnotation = factoryMethod.getAnnotation(Qualifier.class);
					if (targetAnnotation != null && qualifier.equals(targetAnnotation.value())) {
						return true;
					}
				}
			}
		}
		catch (NoSuchBeanDefinitionException ex) {
			// Ignore - can't compare qualifiers for a manually registered singleton object
		}
	}
	return false;
}