com.gargoylesoftware.base.resource
Class PooledResourceFactory

java.lang.Object
  com.gargoylesoftware.base.resource.ResourceFactory
      com.gargoylesoftware.base.resource.PooledResourceFactory

public class PooledResourceFactory
extends ResourceFactory

A resource factory that provides object pooling

Version:

$Revision: 1.6 $

Author:

Mike Bowler

Field Summary

private java.util.List	cache_
private int	preferredCacheSize_
private ResourceFactory	sourceFactory_

Constructor Summary

PooledResourceFactory(ResourceFactory sourceFactory)
Create an instance

Method Summary

int	getPreferredCacheSize() Return the preferredCacheSize
protected ManagedResource	getResourceImpl(ResourceManager resourceManager) Get a resource
boolean	reinitializeResourceIfPossible(ManagedResource resource) Reinitialize the resource to a known state.
protected void	releaseResourceImpl(ResourceManager resourceManager, ManagedResource resource) Release a resource
void	setPreferredCacheSize(int size) Set the preferredCacheSize

Methods inherited from class com.gargoylesoftware.base.resource.ResourceFactory

getResource, releaseAllResources, releaseResource

Methods inherited from class java.lang.Object

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

Field Detail

sourceFactory_

private final ResourceFactory sourceFactory_

preferredCacheSize_

private int preferredCacheSize_

cache_

private java.util.List cache_

Constructor Detail

PooledResourceFactory

public PooledResourceFactory(ResourceFactory sourceFactory)

Create an instance

Parameters:

sourceFactory - The factory that will be used to actually create and destroy the pooled resources

Method Detail

setPreferredCacheSize

public void setPreferredCacheSize(int size)

Set the preferredCacheSize

Parameters:

size - The new size. May not be negative

getPreferredCacheSize

public int getPreferredCacheSize()

Return the preferredCacheSize

Returns:

The size

reinitializeResourceIfPossible

public boolean reinitializeResourceIfPossible(ManagedResource resource)

Reinitialize the resource to a known state. This is required for resource pooling as all resources being returned from a pool must have been initialized to a known state.

Specified by:

reinitializeResourceIfPossible in class ResourceFactory

Parameters:

resource - the resource to reinitialize

Returns:

true if the resource was successfully reinitialized

getResourceImpl

protected ManagedResource getResourceImpl(ResourceManager resourceManager)
                                   throws java.lang.Exception

Get a resource

Specified by:

getResourceImpl in class ResourceFactory

Parameters:

resourceManager - The manager that owns this factory

Returns:

A resource

Throws:

java.lang.Exception - If an error occurs

releaseResourceImpl

protected void releaseResourceImpl(ResourceManager resourceManager,
                                   ManagedResource resource)
                            throws java.lang.Exception

Release a resource

Specified by:

releaseResourceImpl in class ResourceFactory

Parameters:

resource - The resource to release

resourceManager - The manager that owns this factory

Throws:

java.lang.Exception - If an error occurs