lifecycle - How can i remove a singleton spring bean from ApplicationContext?

Question

I want to develop a module control system so that every spring bean can be managed by my own LifeCycle Controller.

But I can not figure out how can I remove a singleton spring bean out of ApplicationContext.

That may be an interesting problem , can you help me to resolve ?

Answer 1

Removing definition does both : removing definition and destroying (removing all container references on that bean) corresponding Singleton :

((BeanDefinitionRegistry) beanFactory).removeBeanDefinition("myBean");

If you just need to remove the singleton then :

((DefaultListableBeanFactory) beanFactory).destroySingleton("myBean");

The latter way may be especially useful if you just registered singleton but haven't defined any bean definitions, i.e.

((SingletonBeanRegistry) beanFactory).registerSingleton("myBean", myBeanInstance);