org.opensaml.xml.util
Class AbstractSingletonFactory<Input,Output>

java.lang.Object
  org.opensaml.xml.util.AbstractSingletonFactory<Input,Output>

Type Parameters:

Input - the factory input class type

Output - the factory output class type

All Implemented Interfaces:

SingletonFactory<Input,Output>

Direct Known Subclasses:

AbstractSimpleSingletonFactory, AbstractWrappedSingletonFactory

public abstract class AbstractSingletonFactory<Input,Output>
extends Object
implements SingletonFactory<Input,Output>

An abstract Template design pattern implementation of SingletonFactory.

Constructor Summary

AbstractSingletonFactory()

Method Summary

protected abstract Output	createNewInstance(Input input) Create a new instance of the output class based on the input class instance.
protected abstract Output	get(Input input) Get the output instance currently associated with the input instance.
Output	getInstance(Input input) Obtain an instance of the output class based on an input class instance.
protected abstract void	put(Input input, Output output) Store the input and output instance association.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractSingletonFactory

public AbstractSingletonFactory()

Method Detail

getInstance

public Output getInstance(Input input)

Obtain an instance of the output class based on an input class instance.

Specified by:

getInstance in interface SingletonFactory<Input,Output>

Parameters:

input - the input class instance

Returns:

an output class instance

get

protected abstract Output get(Input input)

Get the output instance currently associated with the input instance.

Parameters:

input - the input instance key

Returns:

the output instance which corresponds to the input instance, or null if not present

put

protected abstract void put(Input input,
                            Output output)

Store the input and output instance association.

Parameters:

input - the input instance key

output - the output instance value

createNewInstance

protected abstract Output createNewInstance(Input input)

Create a new instance of the output class based on the input class instance.

Parameters:

input - the input class instance

Returns:

an output class instance