org.apache.cxf.common.util.factory
Class AbstractPool

java.lang.Object
  org.apache.cxf.common.util.factory.AbstractPool

All Implemented Interfaces:

java.io.Serializable, Pool

public abstract class AbstractPool
extends java.lang.Object
implements Pool

A simple implementation of Pool that uses null to indicate non-existent pool entry.

This implementation synchronizes on getMutex() for thread safety.

Author:

Ben Yu Feb 2, 2006 3:14:45 PM

See Also:

Serialized Form

Constructor Summary

AbstractPool()

Method Summary

abstract java.lang.Object	get() Get the pooled instance.
java.lang.Object	getInstance(Factory factory) Apply the pooling strategy and return an instance from either the pool or the factory.
protected abstract java.lang.Object	getMutex() Get the object that can be used to synchronize.
java.lang.Object	getPooledInstance(java.lang.Object def) Get the instance that's already pooled.
protected static java.lang.Object	ifnull(java.lang.Object obj, java.lang.Object def)
boolean	isPooled() Is this pool currently having something in cache?
abstract void	set(java.lang.Object val) set an value to the pool.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPool

public AbstractPool()

Method Detail

getInstance

public java.lang.Object getInstance(Factory factory)
                             throws java.lang.Throwable

Description copied from interface: Pool

Apply the pooling strategy and return an instance from either the pool or the factory.

Specified by:

getInstance in interface Pool

Parameters:

factory - the factory to create the object instance.

Returns:

the object instance.

Throws:

java.lang.Throwable

getPooledInstance

public java.lang.Object getPooledInstance(java.lang.Object def)

Description copied from interface: Pool

Get the instance that's already pooled.

Specified by:

getPooledInstance in interface Pool

Parameters:

def - the default value to return if there's no pooled instance.

Returns:

the pooled instance or the default object.

isPooled

public boolean isPooled()

Description copied from interface: Pool

Is this pool currently having something in cache?

Specified by:

isPooled in interface Pool

ifnull

protected static java.lang.Object ifnull(java.lang.Object obj,
                                         java.lang.Object def)

get

public abstract java.lang.Object get()

Get the pooled instance. null if not found.

Returns:

the pooled instance.

set

public abstract void set(java.lang.Object val)

set an value to the pool.

Parameters:

val - the value to be pooled.

getMutex

protected abstract java.lang.Object getMutex()

Get the object that can be used to synchronize.