/**
* Obtain a resource object for the given name and type through autowiring based on the given
* factory.
*
* @param factory the factory to autowire against
* @param element the descriptor for the annotated field/method
* @param requestingBeanName the name of the requesting bean
* @return the resource object (never {@code null})
* @throws BeansException if we failed to obtain the target resource
*/
protected Object autowireResource(
BeanFactory factory, LookupElement element, String requestingBeanName) throws BeansException {
Object resource;
Set<String> autowiredBeanNames;
String name = element.name;
if (this.fallbackToDefaultTypeMatch
&& element.isDefaultName
&& factory instanceof AutowireCapableBeanFactory
&& !factory.containsBean(name)) {
autowiredBeanNames = new LinkedHashSet<String>();
resource =
((AutowireCapableBeanFactory) factory)
.resolveDependency(
element.getDependencyDescriptor(), requestingBeanName, autowiredBeanNames, null);
} else {
resource = factory.getBean(name, element.lookupType);
autowiredBeanNames = Collections.singleton(name);
}
if (factory instanceof ConfigurableBeanFactory) {
ConfigurableBeanFactory beanFactory = (ConfigurableBeanFactory) factory;
for (String autowiredBeanName : autowiredBeanNames) {
if (beanFactory.containsBean(autowiredBeanName)) {
beanFactory.registerDependentBean(autowiredBeanName, requestingBeanName);
}
}
}
return resource;
}
@Override
protected Object getResourceToInject(Object target, String requestingBeanName) {
if (StringUtils.hasLength(this.beanName)) {
if (beanFactory != null && beanFactory.containsBean(this.beanName)) {
// Local match found for explicitly specified local bean name.
Object bean = beanFactory.getBean(this.beanName, this.lookupType);
if (beanFactory instanceof ConfigurableBeanFactory) {
((ConfigurableBeanFactory) beanFactory)
.registerDependentBean(this.beanName, requestingBeanName);
}
return bean;
} else if (this.isDefaultName && !StringUtils.hasLength(this.mappedName)) {
throw new NoSuchBeanDefinitionException(
this.beanName,
"Cannot resolve 'beanName' in local BeanFactory. Consider specifying a general 'name' value instead.");
}
}
// JNDI name lookup - may still go to a local BeanFactory.
return getResource(this, requestingBeanName);
}