dk.rode.thesis.decorator
Class DuplexDecorator

java.lang.Object
  dk.rode.thesis.decorator.SequenceDecorator<String>
      dk.rode.thesis.decorator.DuplexDecorator

All Implemented Interfaces:

Sequence<String>, Copyable<Sequence<String>>, StrictCopyable<Sequence<String>>, Stringable<Sequence<String>>

@Participant(value="ConcreteDecorator")
public class DuplexDecorator
extends SequenceDecorator<String>
implements Sequence<String>

A duplex sequence decorator returns the String value returned by the decorated sequence concatenated with the same value, for example x -> xx.

Only sequences returning strings can be decorated.

The default stringable policy used is DecoratedPolicy.HIDDEN.

Author:

Gunni Rode / rode.dk

Nested Class Summary

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

Sequence.State

Field Summary

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

sequence

Constructor Summary

DuplexDecorator(Sequence<String> sequence)
Constructor.

Method Summary

DuplexDecorator	copy() Returns a copy of this sequence that will start at the same sequence index as this sequence.
String	current() Returns the current element from this sequence.
String	next() Returns the next element from this sequence.

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

bounded, consistent, equals, getSequence, getStringablePolicy, hashCode, reset, 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, reset, state, unique

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

getStringablePolicy, toString

Constructor Detail

DuplexDecorator

public DuplexDecorator(@Participant(value="ConcreteComponent")
                       Sequence<String> sequence)

Constructor.

Parameters:

sequence - The sequence to decorate; cannot be null.

Throws:

NullPointerException - If sequence is null.

Method Detail

copy

public DuplexDecorator 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<String>

Specified by:

copy in interface Copyable<Sequence<String>>

Returns:

A copy of this sequence; never null.

current

public String current()

Description copied from interface: Sequence

Returns the current element from this sequence.

This method can be invoked even if Sequence.next() has not been invoked yet, thus delivering the initial value of this sequence.

Specified by:

current in interface Sequence<String>

Overrides:

current in class SequenceDecorator<String>

Returns:

The current element; never null.

next

public String next()

Description copied from interface: Sequence

Returns the next element from this sequence.

Specified by:

next in interface Sequence<String>

Overrides:

next in class SequenceDecorator<String>

Returns:

The next element; never null.

See Also:

Sequence.current(), Sequence.state()