com.sh.pool

类 BaseObjectPool<T>

java.lang.Object

com.sh.pool.BaseObjectPool<T>

所有已实现的接口:

ObjectPool<T>

直接已知子类:

GenericObjectPool, SoftReferenceObjectPool, StackObjectPool

public abstract class BaseObjectPool<T>
extends java.lang.Object
implements ObjectPool<T>

Description: BaseObjectPool Title:首亨软件 - CRM、TSS、ERP等信息化管理软件

版本:

3.0

作者:

江兴春

构造器概要

构造器

构造器和说明
BaseObjectPool()

方法概要

限定符和类型	方法和说明
void	addObject() Not supported in this base implementation.
abstract T	borrowObject() Obtains an instance from the pool.
void	clear() Not supported in this base implementation.
void	close() Close this pool.
int	getNumActive() Not supported in this base implementation.
int	getNumIdle() Not supported in this base implementation.
abstract void	invalidateObject(T obj) Invalidates an object from the pool.
boolean	isClosed() Has this pool instance been closed.
abstract void	returnObject(T obj) Returns an instance to the pool.
void	setFactory(PoolableObjectFactory<T> factory) 已过时。

从类继承的方法 java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

BaseObjectPool

public BaseObjectPool()

方法详细资料

borrowObject

public abstract T borrowObject()
                        throws java.lang.Exception

Obtains an instance from the pool.

指定者:

borrowObject 在接口中 ObjectPool<T>

返回:

an instance from the pool

抛出:

java.lang.Exception - if an instance cannot be obtained from the pool

returnObject

public abstract void returnObject(T obj)
                           throws java.lang.Exception

Returns an instance to the pool.

指定者:

returnObject 在接口中 ObjectPool<T>

参数:

obj - instance to return to the pool

抛出:

java.lang.Exception

invalidateObject

public abstract void invalidateObject(T obj)
                               throws java.lang.Exception

从接口复制的说明: ObjectPool

Invalidates an object from the pool.

By contract, obj must have been obtained using borrowObject or a related method as defined in an implementation or sub-interface.

This method should be used when an object that has been borrowed is determined (due to an exception or other problem) to be invalid.

指定者:

invalidateObject 在接口中 ObjectPool<T>

参数:

obj - a borrowed instance to be disposed.

抛出:

java.lang.Exception - Exception

getNumIdle

public int getNumIdle()
               throws java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

getNumIdle 在接口中 ObjectPool<T>

返回:

a negative value.

抛出:

java.lang.UnsupportedOperationException - UnsupportedOperationException

getNumActive

public int getNumActive()
                 throws java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

getNumActive 在接口中 ObjectPool<T>

返回:

a negative value.

抛出:

java.lang.UnsupportedOperationException - UnsupportedOperationException

clear

public void clear()
           throws java.lang.Exception,
                  java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

clear 在接口中 ObjectPool<T>

抛出:

java.lang.UnsupportedOperationException - UnsupportedOperationException

java.lang.Exception - Exception

addObject

public void addObject()
               throws java.lang.Exception,
                      java.lang.UnsupportedOperationException

Not supported in this base implementation. Always throws an UnsupportedOperationException, subclasses should override this behavior.

指定者:

addObject 在接口中 ObjectPool<T>

抛出:

java.lang.UnsupportedOperationException - UnsupportedOperationException

java.lang.Exception - Exception

close

public void close()
           throws java.lang.Exception

Close this pool. This affects the behavior of isClosed and assertOpen.

指定者:

close 在接口中 ObjectPool<T>

抛出:

java.lang.Exception - deprecated: implementations should silently fail if not all resources can be freed.

setFactory

@Deprecated
public void setFactory(PoolableObjectFactory<T> factory)
                             throws java.lang.IllegalStateException,
                                    java.lang.UnsupportedOperationException

已过时。

从接口复制的说明: ObjectPool

Sets the factory this pool uses to create new instances (optional operation). Trying to change the factory after a pool has been used will frequently throw an UnsupportedOperationException. It is up to the pool implementation to determine when it is acceptable to call this method.

指定者:

setFactory 在接口中 ObjectPool<T>

参数:

factory - the PoolableObjectFactory used to create new instances.

抛出:

java.lang.IllegalStateException - when the factory cannot be set at this time

java.lang.UnsupportedOperationException - if this implementation does not support the operation

isClosed

public final boolean isClosed()

Has this pool instance been closed.

返回:

true when this pool has been closed.