TargetSourcethat lazily accesses a singleton bean from a
Useful when a proxy reference is needed on initialization but
the actual target object should not be initialized until first use.
When the target bean is defined in an
ApplicationContext (or a
BeanFactory that is eagerly pre-instantiating singleton beans)
it must be marked as "lazy-init" too, else it will be instantiated by said
BeanFactory) on startup.
<bean id="serviceTarget" class="example.MyService" lazy-init="true"> ... </bean> <bean id="service" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="targetSource"> <bean class="org.springframework.aop.target.LazyInitTargetSource"> <property name="targetBeanName"><idref local="serviceTarget"/></property> </bean> </property> </bean>The "serviceTarget" bean will not get initialized until a method on the "service" proxy gets invoked.
Subclasses can extend this class and override the
perform some additional processing with the target object when it is first loaded.
Methods inherited from class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
copyFrom, equals, getBeanFactory, getTargetBeanName, getTargetClass, hashCode, isStatic, releaseTarget, setBeanFactory, setTargetBeanName, setTargetClass, toString
getTargetDescription copied from interface:
TargetSourceReturn a target instance. Invoked immediately before the AOP framework calls the "target" of an AOP method invocation.
- the target object which contains the joinpoint,
nullif there is no actual target instance
postProcessTargetObjectprotected void postProcessTargetObject
(Object targetObject)Subclasses may override this method to perform additional processing on the target object when it is first loaded.
targetObject- the target object that has just been instantiated (and configured)