org.apache.avalon.excalibur.pool
Class SingleThreadedPool

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.avalon.excalibur.pool.SingleThreadedPool

All Implemented Interfaces:

Disposable, Initializable, LogEnabled, Pool, Resizable, SingleThreaded

public class SingleThreadedPool

extends AbstractLogEnabled

implements Pool, Initializable, SingleThreaded, Resizable, Disposable

This is an Pool that caches Poolable objects for reuse.

Since:

4.0

Version:

CVS $Revision: 1.6 $ $Date: 2004/03/29 16:50:37 $

Author:

Avalon Development Team

Field Summary

protected PoolController	m_controller
protected int	m_count
protected ObjectFactory	m_factory
protected int	m_initial
protected boolean	m_initialized
protected int	m_maximum
protected Poolable[]	m_pool

Constructor Summary

SingleThreadedPool(java.lang.Class clazz, int initial, int maximum)

SingleThreadedPool(ObjectFactory factory, int initial, int maximum)

SingleThreadedPool(ObjectFactory factory, PoolController controller, int initial, int maximum)

Method Summary

void	dispose() Dispose the pool and decommission any Poolables.
void	fill(int fillSize) This fills the pool to the size specified in parameter.
Poolable	get() Retrieve an object from pool.
int	getCapacity() Return the total number of slots in Pool
void	grow(int increase) This fills the pool by the size specified in parameter.
void	initialize() Initialize the component.
void	put(Poolable poolable) Place an object in pool.
void	shrink(int decrease) This shrinks the pool by parameter size.
int	size() Get the number of used slots in Pool

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Field Detail

m_initialized

protected boolean m_initialized

m_count

protected int m_count

m_pool

protected Poolable[] m_pool

m_factory

protected ObjectFactory m_factory

m_controller

protected PoolController m_controller

m_maximum

protected int m_maximum

m_initial

protected int m_initial

Constructor Detail

SingleThreadedPool

public SingleThreadedPool(java.lang.Class clazz,
                          int initial,
                          int maximum)
                   throws java.lang.Exception

SingleThreadedPool

public SingleThreadedPool(ObjectFactory factory,
                          int initial,
                          int maximum)
                   throws java.lang.Exception

SingleThreadedPool

public SingleThreadedPool(ObjectFactory factory,
                          PoolController controller,
                          int initial,
                          int maximum)
                   throws java.lang.Exception

Method Detail

initialize

public void initialize()
                throws java.lang.Exception

Description copied from interface: Initializable

Initialize the component. Initialization includes allocating any resources required throughout the component's lifecycle.

Specified by:

initialize in interface Initializable

Throws:

java.lang.Exception - if an error occurs

get

public Poolable get()
             throws java.lang.Exception

Retrieve an object from pool.

Specified by:

get in interface Pool

Returns:

an object from Pool

Throws:

java.lang.Exception

put

public void put(Poolable poolable)

Place an object in pool.

Specified by:

put in interface Pool

Parameters:

poolable - the object to be placed in pool

getCapacity

public final int getCapacity()

Return the total number of slots in Pool

Returns:

the total number of slots

size

public final int size()

Get the number of used slots in Pool

Returns:

the number of used slots

fill

public final void fill(int fillSize)
                throws java.lang.Exception

This fills the pool to the size specified in parameter.

Throws:

java.lang.Exception

grow

public final void grow(int increase)

This fills the pool by the size specified in parameter.

Specified by:

grow in interface Resizable

shrink

public final void shrink(int decrease)

This shrinks the pool by parameter size.

Specified by:

shrink in interface Resizable

dispose

public void dispose()

Dispose the pool and decommission any Poolables.

Specified by:

dispose in interface Disposable