org.sadun.util.pool
Class ObjectPool.BaseFactory

java.lang.Object
  org.sadun.util.pool.ObjectPool.BaseFactory

All Implemented Interfaces:

ObjectPool.Factory, java.io.Serializable

Direct Known Subclasses:

EjbFactory, ObjectPool.ObjectFactory

Enclosing class:

ObjectPool

public abstract static class ObjectPool.BaseFactory

extends java.lang.Object

implements ObjectPool.Factory

A base implementation of ExtendedObjectPool.Factory relying on reflection, holding a Class object, an optional parameter array and an optional Setup object.

These objects are made available to subclasses by the members cls, params and ps.

Version:

1.0

Author:

Cristiano Sadun

See Also:

Serialized Form

Field Summary

protected java.lang.Class	cls The class of the objects produced by the factory.
protected java.lang.Class[]	paramCls The types of the parameters to use for constructing the object.
protected java.lang.Object[]	params The parameters to use for constructing the object.
protected Setup	ps The setup object to use for post-construction initialization.

Constructor Summary

ObjectPool.BaseFactory(java.lang.Class cls, java.lang.Object[] params, Setup ps)
Create a BaseFactory whose member cls will hold the class of the objects to produce

ObjectPool.BaseFactory(java.lang.String clsName, java.lang.Object[] params, Setup ps)
Create a BaseFactory whose member cls will hold the class of the objects to produce

Method Summary

abstract java.lang.Object	create() Subclasses must implement the code which actually creates a new instance of the class to pool.
void	destroy(java.lang.Object obj) A null implementation of ObjectPool.Factory.destroy().
java.lang.Class	getProducedClass() Return the class object for the type of object this factory creates

Methods inherited from class java.lang.Object

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

Field Detail

cls

protected java.lang.Class cls

The class of the objects produced by the factory.

params

protected java.lang.Object[] params

The parameters to use for constructing the object. It is never null, but may have size zero.

ps

protected Setup ps

The setup object to use for post-construction initialization. Can be null.

paramCls

protected java.lang.Class[] paramCls

The types of the parameters to use for constructing the object. It is never null, but may have size zero.

Constructor Detail

ObjectPool.BaseFactory

public ObjectPool.BaseFactory(java.lang.Class cls,
                              java.lang.Object[] params,
                              Setup ps)

Create a BaseFactory whose member cls will hold the class of the objects to produce

Parameters:

cls - the class of the objects to produce

params - the construction parameters, or null

ps - the Setup object to be used for post-construction setup, or null

ObjectPool.BaseFactory

public ObjectPool.BaseFactory(java.lang.String clsName,
                              java.lang.Object[] params,
                              Setup ps)

Create a BaseFactory whose member cls will hold the class of the objects to produce

Parameters:

clsName - the name of the class of the objects to produce

params - the construction parameters, or null

ps - the Setup object to be used for post-construction setup, or null

Method Detail

create

public abstract java.lang.Object create()

Subclasses must implement the code which actually creates a new instance of the class to pool.

Specified by:

create in interface ObjectPool.Factory

Returns:

the newly created object

destroy

public void destroy(java.lang.Object obj)

A null implementation of ObjectPool.Factory.destroy().

Specified by:

destroy in interface ObjectPool.Factory

Parameters:

obj - the object to destroy

getProducedClass

public java.lang.Class getProducedClass()

Return the class object for the type of object this factory creates

Specified by:

getProducedClass in interface ObjectPool.Factory

Returns:

the class object for the type of object this factory creates