AbstractPoolingTargetSource

Class Overview

Abstract base class for pooling TargetSource implementations which maintain a pool of target instances, acquiring and releasing a target object from the pool for each method invocation. This abstract base class is independent of concrete pooling technology; see the subclass CommonsPoolTargetSource for a concrete example.

Subclasses must implement the getTarget() and releaseTarget(Object) methods based on their chosen object pool. The newPrototypeInstance() method inherited from AbstractPrototypeBasedTargetSource can be used to create objects in order to put them into the pool.

Subclasses must also implement some of the monitoring methods from the PoolingConfig interface. The getPoolingConfigMixin() method makes these stats available on proxied objects through an IntroductionAdvisor.

This class implements the DisposableBean interface in order to force subclasses to implement a destroy() method, closing down their object pool.

Summary

[Expand] Inherited Fields
From class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource protected final Log logger Logger available to subclasses

[Expand] Inherited Methods
From class org.springframework.aop.target.AbstractPrototypeBasedTargetSource void destroyPrototypeInstance(Object target) Subclasses should call this method to destroy an obsolete prototype instance. Object newPrototypeInstance() Subclasses should call this method to create a new prototype instance. void setBeanFactory(BeanFactory beanFactory) Set the owning BeanFactory. Object writeReplace() Replaces this object with a SingletonTargetSource on serialization.
From class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource void copyFrom(AbstractBeanFactoryBasedTargetSource other) Copy configuration from the other AbstractBeanFactoryBasedTargetSource object. boolean equals(Object other) BeanFactory getBeanFactory() Return the owning BeanFactory. String getTargetBeanName() Return the name of the target bean in the factory. synchronized Class<?> getTargetClass() Return the type of targets returned by this TargetSource. int hashCode() boolean isStatic() Will all calls to getTarget() return the same object? In that case, there will be no need to invoke releaseTarget(Object), and the AOP framework can cache the return value of getTarget(). void releaseTarget(Object target) Release the given target object obtained from the getTarget() method. void setBeanFactory(BeanFactory beanFactory) Set the owning BeanFactory. void setTargetBeanName(String targetBeanName) Set the name of the target bean in the factory. void setTargetClass(Class targetClass) Specify the target class explicitly, to avoid any kind of access to the target bean (for example, to avoid initialization of a FactoryBean instance). String toString()
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait() final void wait(long arg0, int arg1) final void wait(long arg0)
From interface org.springframework.aop.TargetClassAware abstract Class<?> getTargetClass() Return the target class behind the implementing object (typically a proxy configuration or an actual proxy).
From interface org.springframework.aop.TargetSource abstract Object getTarget() Return a target instance. abstract Class<?> getTargetClass() Return the type of targets returned by this TargetSource. abstract boolean isStatic() Will all calls to getTarget() return the same object? In that case, there will be no need to invoke releaseTarget(Object), and the AOP framework can cache the return value of getTarget(). abstract void releaseTarget(Object target) Release the given target object obtained from the getTarget() method.
From interface org.springframework.aop.target.PoolingConfig abstract int getActiveCount() Return the number of active objects in the pool. abstract int getIdleCount() Return the number of idle objects in the pool. abstract int getMaxSize() Return the maximum size of the pool.
From interface org.springframework.beans.factory.BeanFactoryAware abstract void setBeanFactory(BeanFactory beanFactory) Callback that supplies the owning factory to a bean instance.
From interface org.springframework.beans.factory.DisposableBean abstract void destroy() Invoked by a BeanFactory on destruction of a singleton.