public abstract class AbstractPoolingTargetSource extends AbstractPrototypeBasedTargetSource implements PoolingConfig, org.springframework.beans.factory.DisposableBean
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.
getTarget(),
releaseTarget(java.lang.Object),
DisposableBean.destroy(),
序列化表格logger| 构造器和说明 |
|---|
AbstractPoolingTargetSource() |
| 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.
|
destroyPrototypeInstance, newPrototypeInstance, writeReplacecopyFrom, equals, getBeanFactory, getTargetBeanName, getTargetClass, hashCode, isStatic, setTargetBeanName, setTargetClass, toStringgetActiveCount, getIdleCountpublic void setMaxSize(int maxSize)
public int getMaxSize()
getMaxSize 在接口中 PoolingConfigpublic final void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
throws org.springframework.beans.BeansException
AbstractBeanFactoryBasedTargetSourcegetBean method on every invocation.setBeanFactory 在接口中 org.springframework.beans.factory.BeanFactoryAwaresetBeanFactory 在类中 AbstractPrototypeBasedTargetSourceorg.springframework.beans.BeansExceptionprotected abstract void createPool()
throws Exception
Exception - to avoid placing constraints on pooling APIs@Nullable public abstract Object getTarget() throws Exception
getTarget 在接口中 TargetSourceException - we may need to deal with checked exceptions from pool
APIs, so we're forgiving with our exception signaturepublic abstract void releaseTarget(Object target) throws Exception
releaseTarget 在接口中 TargetSourcereleaseTarget 在类中 AbstractBeanFactoryBasedTargetSourcetarget - object that must have been acquired from the pool
via a call to getTarget()Exception - to allow pooling APIs to throw exceptiongetTarget()public DefaultIntroductionAdvisor getPoolingConfigMixin()