org.springframework.beans.factory.config: public class: BeanReferenceFactoryBean

org.springframework.beans.factory.config
public class: BeanReferenceFactoryBean [javadoc | source]

java.lang.Object
   org.springframework.beans.factory.config.BeanReferenceFactoryBean

All Implemented Interfaces:
SmartFactoryBean, BeanFactoryAware

FactoryBean that exposes an arbitrary target bean under a different name.

Usually, the target bean will reside in a different bean definition file, using this FactoryBean to link it in and expose it under a different name. Effectively, this corresponds to an alias for the target bean.

NOTE: For XML bean definition files, an <alias> tag is available that effectively achieves the same.

A special capability of this FactoryBean is enabled through its configuration as bean definition: The "targetBeanName" can be substituted through a placeholder, in combination with Spring's PropertyPlaceholderConfigurer . Thanks to Marcus Bristav for pointing this out!

Also see:

setTargetBeanName

PropertyPlaceholderConfigurer

author: Juergen - Hoeller

since: 1.2 -

Method from org.springframework.beans.factory.config.BeanReferenceFactoryBean Summary:
getObject, getObjectType, isEagerInit, isPrototype, isSingleton, setBeanFactory, setTargetBeanName

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.springframework.beans.factory.config.BeanReferenceFactoryBean Detail:
public Object getObject() throws BeansException { if (this.beanFactory == null) { throw new FactoryBeanNotInitializedException(); } return this.beanFactory.getBean(this.targetBeanName); }
public Class getObjectType() { if (this.beanFactory == null) { return null; } return this.beanFactory.getType(this.targetBeanName); }
public boolean isEagerInit() { return false; }
public boolean isPrototype() { if (this.beanFactory == null) { throw new FactoryBeanNotInitializedException(); } return this.beanFactory.isPrototype(this.targetBeanName); }
public boolean isSingleton() { if (this.beanFactory == null) { throw new FactoryBeanNotInitializedException(); } return this.beanFactory.isSingleton(this.targetBeanName); }
public void setBeanFactory(BeanFactory beanFactory) { this.beanFactory = beanFactory; if (this.targetBeanName == null) { throw new IllegalArgumentException("'targetBeanName' is required"); } if (!this.beanFactory.containsBean(this.targetBeanName)) { throw new NoSuchBeanDefinitionException(this.targetBeanName, this.beanFactory.toString()); } }
public void setTargetBeanName(String targetBeanName) { this.targetBeanName = targetBeanName; } Set the name of the target bean. This property is required. The value for this property can be substituted through a placeholder, in combination with Spring's PropertyPlaceholderConfigurer.