com.gargoylesoftware.base.resource
Class ResourceFactory

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

Direct Known Subclasses:

JDBCResourceFactory, PooledResourceFactory

public abstract class ResourceFactory

extends Object

A class that can create instances of specific types of resources, such as JDBC connections.

Version:

$Revision: 1.4 $

Author:

Mike Bowler

Constructor Summary

ResourceFactory()
Create a factory

Method Summary

ManagedResource	getResource(ResourceManager resourceManager) Allocate a resource for the specified store
protected abstract ManagedResource	getResourceImpl(ResourceManager resourceManager) Subclasses will override this to perform the actual allocation of the resource.
abstract boolean	reinitializeResourceIfPossible(ManagedResource resource) Reinitialize the resource to a known state.
void	releaseAllResources(ResourceManager resourceManager) Release all the resources that had been allocated by the specified store.
void	releaseResource(ResourceManager resourceManager, ManagedResource resource) Release the specified resource.
protected abstract void	releaseResourceImpl(ResourceManager resourceManager, ManagedResource resource) Subclasses will override this to perform the actual release of the resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceFactory

public ResourceFactory()

Create a factory

Method Detail

getResource

public final ManagedResource getResource(ResourceManager resourceManager)
                                  throws ResourceException

Allocate a resource for the specified store

Parameters:

resourceManager - The object that is managing the resource allocation

Returns:

The new resource

Throws:

ResourceException - If an error occurs

releaseResource

public final void releaseResource(ResourceManager resourceManager,
                                  ManagedResource resource)
                           throws ResourceException

Release the specified resource. It must have been allocated by the specified store

Parameters:

resource - The resource that we are releasing

resourceManager - The object that is managing the resource allocation

Throws:

ResourceException - If an error occurs

releaseAllResources

public void releaseAllResources(ResourceManager resourceManager)
                         throws ResourceException

Release all the resources that had been allocated by the specified store.

Parameters:

resourceManager - The object that is managing the resource allocation

Throws:

ResourceException - If an error occurs

reinitializeResourceIfPossible

public abstract 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.

Parameters:

resource - the resource to reinitialize

Returns:

true if the resource was successfully reinitialized

getResourceImpl

protected abstract ManagedResource getResourceImpl(ResourceManager resourceManager)
                                            throws Exception

Subclasses will override this to perform the actual allocation of the resource.

Parameters:

resourceManager - The object that is managing the resource allocation

Returns:

The new resource

Throws:

Exception - If an error occurs

releaseResourceImpl

protected abstract void releaseResourceImpl(ResourceManager resourceManager,
                                            ManagedResource resource)
                                     throws Exception

Subclasses will override this to perform the actual release of the resource.

Parameters:

resource - The resource to release

resourceManager - The object that is managing the resource allocation

Throws:

Exception - If an error occurs