org.apache.xml.utils
Class ObjectPool

java.lang.Object
  org.apache.xml.utils.ObjectPool

All Implemented Interfaces:

java.io.Serializable

public class ObjectPool
extends java.lang.Object
implements java.io.Serializable

Pool of object of a given type to pick from to help memory usage

See Also:

Serialized Form

Field Summary

private java.util.ArrayList	freeStack Stack of given objects this points to.
private java.lang.Class	objectType Type of objects in this pool.
(package private) static long	serialVersionUID

Constructor Summary

ObjectPool()
Constructor ObjectPool

ObjectPool(java.lang.Class type)
Constructor ObjectPool

ObjectPool(java.lang.Class type, int size)
Constructor ObjectPool

ObjectPool(java.lang.String className)
Constructor ObjectPool

Method Summary

void	freeInstance(java.lang.Object obj) Add an instance of the given object to the pool
java.lang.Object	getInstance() Get an instance of the given object in this pool
java.lang.Object	getInstanceIfFree() Get an instance of the given object in this pool if available

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

static final long serialVersionUID

See Also:

Constant Field Values

objectType

private final java.lang.Class objectType

Type of objects in this pool.

freeStack

private final java.util.ArrayList freeStack

Stack of given objects this points to.

Constructor Detail

ObjectPool

public ObjectPool(java.lang.Class type)

Constructor ObjectPool

Parameters:

type - Type of objects for this pool

ObjectPool

public ObjectPool(java.lang.String className)

Constructor ObjectPool

Parameters:

className - Fully qualified name of the type of objects for this pool.

ObjectPool

public ObjectPool(java.lang.Class type,
                  int size)

Constructor ObjectPool

Parameters:

type - Type of objects for this pool

size - Size of vector to allocate

ObjectPool

public ObjectPool()

Constructor ObjectPool

Method Detail

getInstanceIfFree

public java.lang.Object getInstanceIfFree()

Get an instance of the given object in this pool if available

Returns:

an instance of the given object if available or null

getInstance

public java.lang.Object getInstance()

Get an instance of the given object in this pool

Returns:

An instance of the given object

freeInstance

public void freeInstance(java.lang.Object obj)

Add an instance of the given object to the pool

Parameters:

obj - Object to add.