com.sh.pool

类 BaseKeyedObjectPool<K,V>

java.lang.Object

com.sh.pool.BaseKeyedObjectPool<K,V>

所有已实现的接口:

KeyedObjectPool<K,V>

直接已知子类:

GenericKeyedObjectPool, StackKeyedObjectPool

public abstract class BaseKeyedObjectPool<K,V>
extends java.lang.Object
implements KeyedObjectPool<K,V>

Description: BaseKeyedObjectPool 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
BaseKeyedObjectPool()

方法概要

限定符和类型	方法和说明
void	addObject(K key) Not supported in this base implementation.
abstract V	borrowObject(K key) Obtains an instance from this pool for the specified key.
void	clear() Not supported in this base implementation.
void	clear(K key) Not supported in this base implementation.
void	close() Close this pool.
int	getNumActive() Not supported in this base implementation.
int	getNumActive(K key) Not supported in this base implementation.
int	getNumIdle() Not supported in this base implementation.
int	getNumIdle(K key) Not supported in this base implementation.
abstract void	invalidateObject(K key, V obj) Invalidates an object from the pool.
abstract void	returnObject(K key, V obj) Return an instance to the pool.
void	setFactory(KeyedPoolableObjectFactory<K,V> factory) 已过时。 to be removed in pool 2.0

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

BaseKeyedObjectPool

public BaseKeyedObjectPool()

方法详细资料

borrowObject

public abstract V borrowObject(K key)
                        throws java.lang.Exception

Obtains an instance from this pool for the specified key.

Instances returned from this method will have been either newly created with makeObject or will be a previously idle object and have been activated with activateObject and then validated with validateObject.

By contract, clients must return the borrowed object using returnObject, invalidateObject, or a related method as defined in an implementation or sub-interface, using a key that is equivalent to the one used to borrow the instance in the first place.

The behaviour of this method when the pool has been exhausted is not strictly specified (although it may be specified by implementations). Older versions of this method would return null to indicate exhaustion, newer versions are encouraged to throw a NoSuchElementException.

指定者:

borrowObject 在接口中 KeyedObjectPool<K,V>

参数:

key - the key used to obtain the object

返回:

an instance from this pool.

抛出:

java.lang.IllegalStateException - after close has been called on this pool

java.lang.Exception - when makeObject throws an exception

java.util.NoSuchElementException - when the pool is exhausted and cannot or will not return another instance

returnObject

public abstract void returnObject(K key,
                                  V obj)
                           throws java.lang.Exception

Return an instance to the pool. By contract, obj must have been obtained using borrowObject or a related method as defined in an implementation or sub-interface using a key that is equivalent to the one used to borrow the instance in the first place.

指定者:

returnObject 在接口中 KeyedObjectPool<K,V>

参数:

key - the key used to obtain the object

obj - a borrowed instance to be returned.

抛出:

java.lang.Exception - Exception

invalidateObject

public abstract void invalidateObject(K key,
                                      V obj)
                               throws java.lang.Exception

Invalidates an object from the pool.

By contract, obj must have been obtained using borrowObject using a key that is equivalent to the one used to borrow the Object in the first place.

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 KeyedObjectPool<K,V>

参数:

key - the key used to obtain the object

obj - a borrowed instance to be returned.

抛出:

java.lang.Exception - Exception

addObject

public void addObject(K key)
               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 KeyedObjectPool<K,V>

参数:

key - ignored

抛出:

java.lang.UnsupportedOperationException - UnsupportedOperationException

java.lang.Exception - when KeyedPoolableObjectFactory.makeObject(K) fails.

java.lang.IllegalStateException - after KeyedObjectPool.close() has been called on this pool.

getNumIdle

public int getNumIdle(K key)
               throws java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

getNumIdle 在接口中 KeyedObjectPool<K,V>

参数:

key - ignored

返回:

a negative value.

抛出:

java.lang.UnsupportedOperationException - deprecated: when this implementation doesn't support the operation

getNumActive

public int getNumActive(K key)
                 throws java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

getNumActive 在接口中 KeyedObjectPool<K,V>

参数:

key - ignored

返回:

a negative value.

抛出:

java.lang.UnsupportedOperationException - deprecated: when this implementation doesn't support the operation

getNumIdle

public int getNumIdle()
               throws java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

getNumIdle 在接口中 KeyedObjectPool<K,V>

返回:

a negative value.

抛出:

java.lang.UnsupportedOperationException - deprecated: when this implementation doesn't support the operation

getNumActive

public int getNumActive()
                 throws java.lang.UnsupportedOperationException

Not supported in this base implementation.

指定者:

getNumActive 在接口中 KeyedObjectPool<K,V>

返回:

a negative value.

抛出:

java.lang.UnsupportedOperationException - deprecated: when this implementation doesn't support the operation

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 KeyedObjectPool<K,V>

抛出:

java.lang.UnsupportedOperationException - UnsupportedOperationException

java.lang.Exception - Exception

clear

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

Not supported in this base implementation.

指定者:

clear 在接口中 KeyedObjectPool<K,V>

参数:

key - ignored

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 KeyedObjectPool<K,V>

抛出:

java.lang.Exception - Exception

setFactory

@Deprecated
public void setFactory(KeyedPoolableObjectFactory<K,V> factory)
                             throws java.lang.IllegalStateException,
                                    java.lang.UnsupportedOperationException

已过时。 to be removed in pool 2.0

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

指定者:

setFactory 在接口中 KeyedObjectPool<K,V>

参数:

factory - the new KeyedPoolableObjectFactory

抛出:

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

java.lang.UnsupportedOperationException - when this implementation doesn't support the operation