org.springframework.aop.target

类 AbstractPoolingTargetSource

java.lang.Object

org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource

org.springframework.aop.target.AbstractPrototypeBasedTargetSource

org.springframework.aop.target.AbstractPoolingTargetSource

所有已实现的接口:

Serializable, PoolingConfig, TargetClassAware, TargetSource, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.DisposableBean

直接已知子类:

CommonsPool2TargetSource

public abstract class AbstractPoolingTargetSource
extends AbstractPrototypeBasedTargetSource
implements PoolingConfig, org.springframework.beans.factory.DisposableBean

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 CommonsPool2TargetSource for a concrete example.

Subclasses must implement the getTarget() and releaseTarget(java.lang.Object) methods based on their chosen object pool. The AbstractPrototypeBasedTargetSource.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 DisposableBean.destroy() method, closing down their object pool.

作者:

Rod Johnson, Juergen Hoeller

另请参阅:

getTarget(), releaseTarget(java.lang.Object), DisposableBean.destroy(), 序列化表格

字段概要

从类继承的字段 org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource

logger

构造器概要

构造器

构造器和说明
AbstractPoolingTargetSource()

方法概要

限定符和类型	方法和说明
protected abstract void	createPool() Create the pool.
int	getMaxSize() Return the maximum size of the pool.
DefaultIntroductionAdvisor	getPoolingConfigMixin() Return an IntroductionAdvisor that providing a mixin exposing statistics about the pool maintained by this object.
abstract Object	getTarget() Acquire an object from the pool.
abstract void	releaseTarget(Object target) Return the given object to the pool.
void	setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory) Set the owning BeanFactory.
void	setMaxSize(int maxSize) Set the maximum size of the pool.

从类继承的方法 org.springframework.aop.target.AbstractPrototypeBasedTargetSource

destroyPrototypeInstance, newPrototypeInstance, writeReplace

从类继承的方法 org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource

copyFrom, equals, getBeanFactory, getTargetBeanName, getTargetClass, hashCode, isStatic, setTargetBeanName, setTargetClass, toString

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.springframework.aop.target.PoolingConfig

getActiveCount, getIdleCount

从接口继承的方法 org.springframework.beans.factory.DisposableBean

destroy

构造器详细资料

AbstractPoolingTargetSource

public AbstractPoolingTargetSource()

方法详细资料

setMaxSize

public void setMaxSize(int maxSize)

Set the maximum size of the pool. Default is -1, indicating no size limit.

getMaxSize

public int getMaxSize()

Return the maximum size of the pool.

指定者:

getMaxSize 在接口中 PoolingConfig

setBeanFactory

public final void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
                          throws org.springframework.beans.BeansException

从类复制的说明: AbstractBeanFactoryBasedTargetSource

Set the owning BeanFactory. We need to save a reference so that we can use the getBean method on every invocation.

指定者:

setBeanFactory 在接口中 org.springframework.beans.factory.BeanFactoryAware

覆盖:

setBeanFactory 在类中 AbstractPrototypeBasedTargetSource

抛出:

org.springframework.beans.BeansException

createPool

protected abstract void createPool()
                            throws Exception

Create the pool.

抛出:

Exception - to avoid placing constraints on pooling APIs

getTarget

@Nullable
public abstract Object getTarget()
                                     throws Exception

Acquire an object from the pool.

指定者:

getTarget 在接口中 TargetSource

返回:

an object from the pool

抛出:

Exception - we may need to deal with checked exceptions from pool APIs, so we're forgiving with our exception signature

releaseTarget

public abstract void releaseTarget(Object target)
                            throws Exception

Return the given object to the pool.

指定者:

releaseTarget 在接口中 TargetSource

覆盖:

releaseTarget 在类中 AbstractBeanFactoryBasedTargetSource

参数:

target - object that must have been acquired from the pool via a call to getTarget()

抛出:

Exception - to allow pooling APIs to throw exception

另请参阅:

getTarget()

getPoolingConfigMixin

public DefaultIntroductionAdvisor getPoolingConfigMixin()

Return an IntroductionAdvisor that providing a mixin exposing statistics about the pool maintained by this object.