ptolemy.actor.gt.data
Class CombinedCollection.Iterator

java.lang.Object
  ptolemy.actor.gt.data.CombinedCollection.Iterator

All Implemented Interfaces:

java.util.Iterator<E>

Enclosing class:

CombinedCollection<E>

private class CombinedCollection.Iterator
extends java.lang.Object
implements java.util.Iterator<E>

The iterator for iterating elements in this collection.

Since:

Ptolemy II 8.0

Version:

$Id: CombinedCollection.java 57046 2010-01-27 23:35:53Z cxh $

Author:

Thomas Huining Feng

Accepted Rating:

Red (tfeng)

Proposed Rating:

Yellow (tfeng)

Field Summary

private java.util.Iterator<java.util.Collection<? extends E>>	_collectionIterator The iterator to iterate the component collections.
private java.util.Iterator<? extends E>	_elementIterator The iterator to iterate the elements of the chosen component collection.

Constructor Summary

CombinedCollection.Iterator()
Construct an iterator.

Method Summary

private void	_ensureNext() Move the pointer to the next element in the collection.
boolean	hasNext() Test whether there is a next element.
E	next() Return the next element, if any, or throw a NoSuchElementException if the end of the collection has already been reached.
void	remove() Throw a runtime exception because removal is not supported.

Methods inherited from class java.lang.Object

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

Field Detail

_collectionIterator

private java.util.Iterator<java.util.Collection<? extends E>> _collectionIterator

The iterator to iterate the component collections.

_elementIterator

private java.util.Iterator<? extends E> _elementIterator

The iterator to iterate the elements of the chosen component collection.

Constructor Detail

CombinedCollection.Iterator

CombinedCollection.Iterator()

Construct an iterator.

Method Detail

hasNext

public boolean hasNext()

Test whether there is a next element.

Specified by:

hasNext in interface java.util.Iterator<E>

Returns:

true if there is a next element.

next

public E next()

Return the next element, if any, or throw a NoSuchElementException if the end of the collection has already been reached.

Specified by:

next in interface java.util.Iterator<E>

Returns:

The next element.

remove

public void remove()

Throw a runtime exception because removal is not supported.

Specified by:

remove in interface java.util.Iterator<E>

_ensureNext

private void _ensureNext()

Move the pointer to the next element in the collection.