Class PoolUtils.ErodingPerKeyKeyedObjectPool<K,V>

java.lang.Object

org.datanucleus.store.rdbms.datasource.dbcp2.pool2.PoolUtils.ErodingKeyedObjectPool<K,V>

org.datanucleus.store.rdbms.datasource.dbcp2.pool2.PoolUtils.ErodingPerKeyKeyedObjectPool<K,V>

Type Parameters:

K - object pool key type

V - object pool value type

All Implemented Interfaces:

Closeable, AutoCloseable, KeyedObjectPool<K,V>

Enclosing class:

PoolUtils

private static final class PoolUtils.ErodingPerKeyKeyedObjectPool<K,V>
extends PoolUtils.ErodingKeyedObjectPool<K,V>

Extends ErodingKeyedObjectPool to allow erosion to take place on a per-key basis. Timing of erosion events is tracked separately for separate keyed pools.

Since:

2.0

Field Summary

Fields

Modifier and Type	Field	Description
private final float	factor	Erosion factor - same for all pools
private final Map<K, PoolUtils.ErodingFactor>	factors	Map of ErodingFactor instances keyed on pool keys

Constructor Summary

Constructors

Constructor	Description
ErodingPerKeyKeyedObjectPool(KeyedObjectPool<K,V> keyedPool, float factor)	Creates a new ErordingPerKeyKeyedObjectPool decorating the given keyed pool with the specified erosion factor.

Method Summary

Modifier and Type	Method	Description
protected PoolUtils.ErodingFactor	getErodingFactor(K key)	Returns the eroding factor for the given key
String	toString()

Methods inherited from class PoolUtils.ErodingKeyedObjectPool

addObject, borrowObject, clear, clear, close, getKeyedPool, getNumActive, getNumActive, getNumIdle, getNumIdle, invalidateObject, returnObject

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface KeyedObjectPool

addObjects, addObjects

Field Details

factor

private final float factor

Erosion factor - same for all pools

factors

private final Map<K, PoolUtils.ErodingFactor> factors

Map of ErodingFactor instances keyed on pool keys

Constructor Details

ErodingPerKeyKeyedObjectPool

public ErodingPerKeyKeyedObjectPool(KeyedObjectPool<K,V> keyedPool,
 float factor)

Creates a new ErordingPerKeyKeyedObjectPool decorating the given keyed pool with the specified erosion factor.

Parameters:

keyedPool - underlying keyed pool

factor - erosion factor

Method Details

getErodingFactor

protected PoolUtils.ErodingFactor getErodingFactor(K key)

Returns the eroding factor for the given key

Overrides:

getErodingFactor in class PoolUtils.ErodingKeyedObjectPool<K,V>

Parameters:

key - key

Returns:

eroding factor for the given keyed pool

toString

public String toString()

Overrides:

toString in class PoolUtils.ErodingKeyedObjectPool<K,V>