com.sun.sgs.app.util
Class ScalableDeque.BidirectionalDequeIterator<E>

java.lang.Object
  com.sun.sgs.app.util.ScalableDeque.BidirectionalDequeIterator<E>

Type Parameters:

E - the type of elements returned by the iterator

All Implemented Interfaces:

Serializable, Iterator<E>

Enclosing class:

ScalableDeque<E>

static class ScalableDeque.BidirectionalDequeIterator<E>
extends Object
implements Iterator<E>, Serializable

A implementation of the iterator for the ScalableDeque that allows element traverse from head-to-tail or tail-to-head as required.

If an iterator is created for an empty deque, and then serialized, it will remain valid upon any subsequent deserialization. An iterator in this state, where it has been created but next has never been called, will always begin an the first entry in the map, if any, since its deserialization.

Constructor Summary

ScalableDeque.BidirectionalDequeIterator(ScalableDeque<E> deque, boolean isReverse)
Constructs a new BidirectionalDequeIterator.

Method Summary

boolean	hasNext()
E	next() Returns the next element in the ScalableDeque.
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

ScalableDeque.BidirectionalDequeIterator

ScalableDeque.BidirectionalDequeIterator(ScalableDeque<E> deque,
                                         boolean isReverse)

Constructs a new BidirectionalDequeIterator.

Parameters:

deque - the deque that will be iterated over

isReverse - whether this iterator should traverse the provided deque from tail to head

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

next

public E next()

Returns the next element in the ScalableDeque. This method will throw a ConcurrentModificationException if the next element that the iterator was set to return has been removed from the deque, and hasNext() as not been called first.

Specified by:

next in interface Iterator<E>

Returns:

the next element in the ScalableDeque

Throws:

NoSuchElementException - if no further entries exist

ConcurrentModificationException - if the next element of this iterator has been removed from the deque and hasNext() had not been called prior to this method.

remove

public void remove()

Specified by:

remove in interface Iterator<E>