Evaluating Software Design Patterns
— the "Gang of Four" patterns implemented in Java 6

Class NonResettableSequence<E>

  extended by dk.rode.thesis.decorator.SequenceDecorator<E>
      extended by 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:

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].

Gunni Rode / rode.dk
See Also:

Nested Class Summary
Nested classes/interfaces inherited from interface dk.rode.thesis.meta.model.Sequence
Constructor Summary
NonResettableSequence(Sequence<E> sequence)
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


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

sequence - The sequence to proxy; cannot be null.
NullPointerException - If sequence is null.
Method Detail


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>>
A copy of this sequence; never null.


public final void reset()
Does not reset the proxied sequence.

Specified by:
reset in interface Sequence<E>
reset in class SequenceDecorator<E>

Gunni Rode / rode.dk

Feel free to use and/or modify the Java 6 source code developed for this thesis AT YOUR OWN RISK, but note that the source code comes WITHOUT ANY — and I do mean WITHOUT ANY — form of warranty WHAT SO EVER!

The original thesis and source code are available at rode.dk/thesis.