org.apache.excalibur.mpool

Class VariableSizePool

java.lang.Object

org.apache.excalibur.mpool.VariableSizePool

All Implemented Interfaces:

org.apache.avalon.framework.activity.Disposable, org.apache.excalibur.mpool.ManagablePool, org.apache.excalibur.mpool.Pool

public final class VariableSizePool
extends java.lang.Object
implements org.apache.excalibur.mpool.Pool, org.apache.avalon.framework.activity.Disposable, org.apache.excalibur.mpool.ManagablePool

This is an Pool that caches Poolable objects for reuse. Please note that this pool offers no resource limiting whatsoever.

Since:

4.1

Version:

CVS $Revision: 1.4 $ $Date: 2004/02/28 11:47:34 $

Author:

Avalon Development Team

Field Summary

Fields

Modifier and Type	Field and Description
private org.apache.commons.collections.Buffer	m_buffer
private boolean	m_disposed
private org.apache.excalibur.mpool.ObjectFactory	m_factory
private long	m_key

Constructor Summary

Constructors

Constructor and Description
VariableSizePool(org.apache.excalibur.mpool.ObjectFactory factory, int size) Constructor for an unmanaged pool
VariableSizePool(org.apache.excalibur.mpool.ObjectFactory factory, int size, long key) Constructor for a managed pool

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	acquire()
void	dispose()
void	grow(int byNum, long key)
java.lang.Object	newInstance()
void	release(java.lang.Object pooledObject)
void	shrink(int byNum, long key)
int	size(long key)

Methods inherited from class java.lang.Object

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

Field Detail

m_disposed

private boolean m_disposed

m_buffer

private final org.apache.commons.collections.Buffer m_buffer

m_factory

private final org.apache.excalibur.mpool.ObjectFactory m_factory

m_key

private final long m_key

Constructor Detail

VariableSizePool

public VariableSizePool(org.apache.excalibur.mpool.ObjectFactory factory,
                int size)
                 throws java.lang.Exception

Constructor for an unmanaged pool

Throws:

java.lang.Exception

VariableSizePool

public VariableSizePool(org.apache.excalibur.mpool.ObjectFactory factory,
                int size,
                long key)
                 throws java.lang.Exception

Constructor for a managed pool

Throws:

java.lang.Exception

Method Detail

acquire

public java.lang.Object acquire()
                         throws java.lang.Exception

Specified by:

acquire in interface org.apache.excalibur.mpool.Pool

Throws:

java.lang.Exception

release

public void release(java.lang.Object pooledObject)

Specified by:

release in interface org.apache.excalibur.mpool.Pool

newInstance

public java.lang.Object newInstance()
                             throws java.lang.Exception

Specified by:

newInstance in interface org.apache.excalibur.mpool.Pool

Throws:

java.lang.Exception

dispose

public void dispose()

Specified by:

dispose in interface org.apache.avalon.framework.activity.Disposable

shrink

public void shrink(int byNum,
          long key)
            throws java.lang.IllegalAccessException

Specified by:

shrink in interface org.apache.excalibur.mpool.ManagablePool

Throws:

java.lang.IllegalAccessException

grow

public void grow(int byNum,
        long key)
          throws java.lang.IllegalAccessException

Specified by:

grow in interface org.apache.excalibur.mpool.ManagablePool

Throws:

java.lang.IllegalAccessException

size

public int size(long key)
         throws java.lang.IllegalAccessException

Specified by:

size in interface org.apache.excalibur.mpool.ManagablePool

Throws:

java.lang.IllegalAccessException