dk.rode.thesis.abstractfactory
Class PrototypicalFactory<T extends StrictCopyable<T>>

java.lang.Object
  dk.rode.thesis.abstractfactory.PrototypicalFactory<T>

Type Parameters:

T - The type of values created by this factory.

Direct Known Subclasses:

PrototypicalSequenceFactory

@ParticipantUsage(value="ConcreteProduct",
                  type=StrictCopyable.class)
@Participant(value="ConcreteFactory")
public class PrototypicalFactory<T extends StrictCopyable<T>>
extends Object

A prototypical factory creates instances of a specific type of copyable type based on a prototype supplied at construction time.

This factory is thread-safe.

Implementation notes:
Using the Prototype pattern as a means to create different types of sequences is an, perhaps safer, alternative to creating sequences using reflection. The Factory type illustrates how reflection can be used in the creation process.

Author:

Gunni Rode / rode.dk

See Also:

PrototypicalRegistry

Field Summary

private T

prototype The prototypical object to use.

Constructor Summary

PrototypicalFactory(T prototype)
Constructor.

Method Summary

T	create() Creates a new instance based on the prototypical object supplied at construction time.
String	toString() Returns the string representation of this factory.

Methods inherited from class java.lang.Object

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

Field Detail

prototype

private final T extends StrictCopyable<T> prototype

The prototypical object to use.

Never null.

Constructor Detail

PrototypicalFactory

public PrototypicalFactory(T prototype)

Constructor.

prototype is copied and this factory keeps no reference to it.

Parameters:

prototype - The prototypical object to use; cannot be null.

Throws:

NullPointerException - If prototype is null.

Method Detail

create

public T create()

Creates a new instance based on the prototypical object supplied at construction time.

Returns:

The new instance; never null.

toString

public String toString()

Returns the string representation of this factory.

Overrides:

toString in class Object

Returns:

The string representation; never null.