nl.knowledgeplaza.util.pool
Class PriorityObjectPool<T>

java.lang.Object
  nl.knowledgeplaza.util.pool.BaseObjectPool<T>
      nl.knowledgeplaza.util.pool.PriorityObjectPool<T>

All Implemented Interfaces:

ObjectPool<T>

Direct Known Subclasses:

FastestFirstObjectPool

public class PriorityObjectPool<T>
extends BaseObjectPool<T>
implements ObjectPool<T>

This class implements a priority pool. This means that the pooled objects are sorted according to criteria implemented by a Comparator.

Version:

$Revision: 1.3 $

Author:

$Author: toeukpap $

See Also:

Nested Class Summary

Nested classes/interfaces inherited from class nl.knowledgeplaza.util.pool.BaseObjectPool

BaseObjectPool.NotFromThisPoolException, BaseObjectPool.TimeOutException

Field Summary

protected List<T>	iListOfPooledObjects
protected SortedList<T>	iSortedListOfPooledObjects the storage
static String	SOURCECODE_VERSION Standard variable for determining version of a class file.

Fields inherited from class nl.knowledgeplaza.util.pool.BaseObjectPool

iClose, iListOfHandedOutObjects, iListOfHandedOutObjectsSync, iShuttingDown, iSynchronized, itestOnBorrow, MAINTENANCE_PERIOD, WHEN_EXHAUSTED_BLOCK, WHEN_EXHAUSTED_FAIL

Constructor Summary

PriorityObjectPool()
Initialize Assume that the pooled objects are Comparable

PriorityObjectPool(Collection<T> collection)
Initialize Assume that the pooled objects are Comparable

PriorityObjectPool(Collection<T> collection, Comparator<T> comparator)
Initialize

PriorityObjectPool(Comparator<T> comparator)
Initialize

PriorityObjectPool(PoolableObjectFactory<T> poolableObjectFactory)
Initialize Assume that the pooled objects are Comparable

PriorityObjectPool(PoolableObjectFactory<T> poolableObjectFactory, Comparator<T> comparator)
Initialize

Method Summary

protected Collection<T>	getPooledObjectsImpl() this method allows read only access to the collection of handed out objects, used by the generic algorithm
protected T	obtainPooledObjectImpl() this method obtains a pooled object, the implementation determines the behaviour (LIFO, FIFO, etc)
protected void	returnPooledObjectImpl(T o) this method returns a pooled object, the implementation determines the behaviour (LIFO, FIFO, etc)

Methods inherited from class nl.knowledgeplaza.util.pool.BaseObjectPool

addObject, borrowObject, clear, close, factoryActivateObject, factoryDestroyObject, factoryMakeObject, factoryPassivateObject, factoryValidateObject, fill, getFactory, getMaxActive, getMaxIdle, getMaxWait, getName, getNameDescription, getNumActive, getNumberOfObjectsScheduledForDestruction, getNumIdle, getPooledObjects, getTestOnBorrow, getWhenExhaustedAction, invalidateObject, isClosed, isShuttingDown, isSynchronized, maintenance, obtainPooledObject, returnObject, returnPooledObject, setFactory, setMaxActive, setMaxIdle, setMaxWait, setName, setSynchronized, setTestOnBorrow, setWhenExhaustedAction, shutdown

Methods inherited from class java.lang.Object

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

Methods inherited from interface nl.knowledgeplaza.util.pool.ObjectPool

addObject, borrowObject, clear, close, getNumActive, getNumIdle, invalidateObject, isSynchronized, returnObject, setFactory, setSynchronized, shutdown

Field Detail

SOURCECODE_VERSION

public static final String SOURCECODE_VERSION

Standard variable for determining version of a class file.

See Also:

Constant Field Values

iSortedListOfPooledObjects

protected SortedList<T> iSortedListOfPooledObjects

the storage

iListOfPooledObjects

protected List<T> iListOfPooledObjects

Constructor Detail

PriorityObjectPool

public PriorityObjectPool()

Initialize Assume that the pooled objects are Comparable

PriorityObjectPool

public PriorityObjectPool(Comparator<T> comparator)

Initialize

PriorityObjectPool

public PriorityObjectPool(PoolableObjectFactory<T> poolableObjectFactory)

Initialize Assume that the pooled objects are Comparable

PriorityObjectPool

public PriorityObjectPool(PoolableObjectFactory<T> poolableObjectFactory,
                          Comparator<T> comparator)

Initialize

PriorityObjectPool

public PriorityObjectPool(Collection<T> collection)

Initialize Assume that the pooled objects are Comparable

PriorityObjectPool

public PriorityObjectPool(Collection<T> collection,
                          Comparator<T> comparator)

Initialize

Method Detail

getPooledObjectsImpl

protected Collection<T> getPooledObjectsImpl()

Description copied from class: BaseObjectPool

this method allows read only access to the collection of handed out objects, used by the generic algorithm

Specified by:

getPooledObjectsImpl in class BaseObjectPool<T>

obtainPooledObjectImpl

protected T obtainPooledObjectImpl()

Description copied from class: BaseObjectPool

this method obtains a pooled object, the implementation determines the behaviour (LIFO, FIFO, etc)

Specified by:

obtainPooledObjectImpl in class BaseObjectPool<T>

returnPooledObjectImpl

protected void returnPooledObjectImpl(T o)

Description copied from class: BaseObjectPool

this method returns a pooled object, the implementation determines the behaviour (LIFO, FIFO, etc)

Specified by:

returnPooledObjectImpl in class BaseObjectPool<T>