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Java Source Code / Java Documentation » J2EE » spring framework 2.0.6 » org.springframework.aop.target

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.springframework.aop.target .AbstractBeanFactoryBasedTargetSource

org.springframework.aop.target .AbstractPrototypeBasedTargetSource

org.springframework.aop.target .AbstractPoolingTargetSource

All known Subclasses:   org.springframework.aop.target .CommonsPoolTargetSource,
AbstractPoolingTargetSource
abstract public class AbstractPoolingTargetSource extends AbstractPrototypeBasedTargetSource implements PoolingConfig,DisposableBean(Code)
Abstract base class for pooling org.springframework.aop.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 AbstractPoolingTargetSource.getTarget and AbstractPoolingTargetSource.releaseTarget methods based on their chosen object pool. The AbstractPoolingTargetSource.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 AbstractPoolingTargetSource.getPoolingConfigMixin() method makes these stats available on proxied objects through an IntroductionAdvisor.
This class implements the org.springframework.beans.factory.DisposableBean interface in order to force subclasses to implement a AbstractPoolingTargetSource.destroy() method, closing down their object pool.
author:
   Rod Johnson
author:
   Juergen Hoeller
See Also:   AbstractPoolingTargetSource.getTarget
See Also:   AbstractPoolingTargetSource.releaseTarget
See Also:   AbstractPoolingTargetSource.destroy

Method Summary
abstract protected void createPool()
     Create the pool.
public int getMaxSize()
     Return the maximum size of the pool.
public DefaultIntroductionAdvisor getPoolingConfigMixin()
     Return an IntroductionAdvisor that providing a mixin exposing statistics about the pool maintained by this object.
abstract public Object getTarget()
     Acquire an object from the pool.
abstract public void releaseTarget(Object target)
     Return the given object to the pool.
final public void setBeanFactory(BeanFactory beanFactory)

public void setMaxSize(int maxSize)
     Set the maximum size of the pool.

Method Detail
createPool
abstract protected void createPool() throws Exception(Code)
Create the pool.
throws:
  Exception - to avoid placing constraints on pooling APIs

getMaxSize
public int getMaxSize()(Code)
Return the maximum size of the pool.

getPoolingConfigMixin
public DefaultIntroductionAdvisor getPoolingConfigMixin()(Code)
Return an IntroductionAdvisor that providing a mixin exposing statistics about the pool maintained by this object.

getTarget
abstract public Object getTarget() throws Exception(Code)
Acquire an object from the pool. an object from the pool
throws:
  Exception - we may need to deal with checked exceptions from poolAPIs, so we're forgiving with our exception signature

releaseTarget
abstract public void releaseTarget(Object target) throws Exception(Code)
Return the given object to the pool.
Parameters:
  target - object that must have been acquired from the poolvia a call to getTarget()
throws:
  Exception - to allow pooling APIs to throw exception
See Also:   AbstractPoolingTargetSource.getTarget

setBeanFactory
final public void setBeanFactory(BeanFactory beanFactory) throws BeansException(Code)

setMaxSize
public void setMaxSize(int maxSize)(Code)
Set the maximum size of the pool. Default is -1, indicating no size limit.

Methods inherited from org.springframework.aop.target.AbstractPrototypeBasedTargetSource
protected void destroyPrototypeInstance(Object target)(Code)(Java Doc)
protected Object newPrototypeInstance() throws BeansException(Code)(Java Doc)
public void setBeanFactory(BeanFactory beanFactory) throws BeansException(Code)(Java Doc)

Fields inherited from org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
final protected Log logger(Code)(Java Doc)

Methods inherited from org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
protected void copyFrom(AbstractBeanFactoryBasedTargetSource other)(Code)(Java Doc)
public boolean equals(Object other)(Code)(Java Doc)
public BeanFactory getBeanFactory()(Code)(Java Doc)
public String getTargetBeanName()(Code)(Java Doc)
public synchronized Class getTargetClass()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public boolean isStatic()(Code)(Java Doc)
public void releaseTarget(Object target) throws Exception(Code)(Java Doc)
public void setBeanFactory(BeanFactory beanFactory) throws BeansException(Code)(Java Doc)
public void setTargetBeanName(String targetBeanName)(Code)(Java Doc)
public void setTargetClass(Class targetClass)(Code)(Java Doc)
public String toString()(Code)(Java Doc)
protected Object writeReplace() throws ObjectStreamException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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