dk.rode.thesis.proxy
Class NonResettableSequence<E>

java.lang.Object
  dk.rode.thesis.decorator.SequenceDecorator<E>
      dk.rode.thesis.proxy.NonResettableSequence<E>

Type Parameters:

E - The type of values delivered by this sequence.

All Implemented Interfaces:

Sequence<E>, Copyable<Sequence<E>>, StrictCopyable<Sequence<E>>, Stringable<Sequence<E>>

Direct Known Subclasses:

ImmutableSequence

@ParticipantUsage(value="Subject",
                  type=Sequence.class)
@Participant(value="Proxy")
public class NonResettableSequence<E>
extends SequenceDecorator<E>
implements Sequence<E>

A non-resettable sequence ensures that invocations of reset() are ignored for the proxied sequence if and only if the proxied sequence is accessed through the proxy only.

A non-resettable sequence exhibits the same bounded, consistent, and unique properties as the proxied sequence.

Implementation notes:
A non-resettable sequence corresponds to a protection proxy as described by Gamma et al. [Gamma95, p.208].

Author:

Gunni Rode / rode.dk

See Also:

SequenceProxyFactory.getNonResettableSequence(Sequence)

Nested Class Summary

Nested classes/interfaces inherited from interface dk.rode.thesis.meta.model.Sequence

Sequence.State

Constructor Summary

NonResettableSequence(Sequence<E> sequence)
Constructor.

Method Summary

NonResettableSequence<E>	copy() Returns a copy of this sequence that will start at the same sequence index as this sequence.
void	reset() Does not reset the proxied sequence.

Methods inherited from class dk.rode.thesis.decorator.SequenceDecorator

bounded, consistent, current, equals, getSequence, getStringablePolicy, hashCode, next, state, toString, toString, unique

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface dk.rode.thesis.meta.model.Sequence

bounded, consistent, current, next, state, unique

Methods inherited from interface dk.rode.thesis.strategy.Stringable

getStringablePolicy, toString

Constructor Detail

NonResettableSequence

public NonResettableSequence(@Participant(value="RealSubject")
                             Sequence<E> sequence)

Constructor.

Parameters:

sequence - The sequence to proxy; cannot be null.

Throws:

NullPointerException - If sequence is null.

Method Detail

copy

public NonResettableSequence<E> copy()

Description copied from interface: Sequence

Returns a copy of this sequence that will start at the same sequence index as this sequence.

Specified by:

copy in interface Sequence<E>

Specified by:

copy in interface Copyable<Sequence<E>>

Returns:

A copy of this sequence; never null.

reset

public final void reset()

Does not reset the proxied sequence.

Specified by:

reset in interface Sequence<E>

Overrides:

reset in class SequenceDecorator<E>