Java BeanFactory.isPrototype方法代碼示例

import org.springframework.beans.factory.BeanFactory; //導入方法依賴的package包/類
/**
 * Create a PrototypeAspectInstanceFactory. AspectJ will be called to
 * introspect to create AJType metadata using the type returned for the
 * given bean name from the BeanFactory.
 * @param beanFactory the BeanFactory to obtain instance(s) from
 * @param name the name of the bean
 */
public PrototypeAspectInstanceFactory(BeanFactory beanFactory, String name) {
	super(beanFactory, name);
	if (!beanFactory.isPrototype(name)) {
		throw new IllegalArgumentException(
				"Cannot use PrototypeAspectInstanceFactory with bean named '" + name + "': not a prototype");
	}
}
 

import org.springframework.beans.factory.BeanFactory; //導入方法依賴的package包/類
@Override
public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
	super.setBeanFactory(beanFactory);

	// Check whether the target bean is defined as prototype.
	if (!beanFactory.isPrototype(getTargetBeanName())) {
		throw new BeanDefinitionStoreException(
				"Cannot use prototype-based TargetSource against non-prototype bean with name '" +
				getTargetBeanName() + "': instances would not be independent");
	}
}
 

import org.springframework.beans.factory.BeanFactory; //導入方法依賴的package包/類
@Override
public boolean isPrototype(String name) throws NoSuchBeanDefinitionException {
	String beanName = transformedBeanName(name);

	BeanFactory parentBeanFactory = getParentBeanFactory();
	if (parentBeanFactory != null && !containsBeanDefinition(beanName)) {
		// No bean definition found in this factory -> delegate to parent.
		return parentBeanFactory.isPrototype(originalBeanName(name));
	}

	RootBeanDefinition mbd = getMergedLocalBeanDefinition(beanName);
	if (mbd.isPrototype()) {
		// In case of FactoryBean, return singleton status of created object if not a dereference.
		return (!BeanFactoryUtils.isFactoryDereference(name) || isFactoryBean(beanName, mbd));
	}
	else {
		// Singleton or scoped - not a prototype.
		// However, FactoryBean may still produce a prototype object...
		if (BeanFactoryUtils.isFactoryDereference(name)) {
			return false;
		}
		if (isFactoryBean(beanName, mbd)) {
			final FactoryBean<?> factoryBean = (FactoryBean<?>) getBean(FACTORY_BEAN_PREFIX + beanName);
			if (System.getSecurityManager() != null) {
				return AccessController.doPrivileged(new PrivilegedAction<Boolean>() {
					@Override
					public Boolean run() {
						return ((factoryBean instanceof SmartFactoryBean && ((SmartFactoryBean<?>) factoryBean).isPrototype()) ||
								!factoryBean.isSingleton());
					}
				}, getAccessControlContext());
			}
			else {
				return ((factoryBean instanceof SmartFactoryBean && ((SmartFactoryBean<?>) factoryBean).isPrototype()) ||
						!factoryBean.isSingleton());
			}
		}
		else {
			return false;
		}
	}
}