diva.util
Class IteratorIterator

java.lang.Object
  diva.util.IteratorAdapter
      diva.util.IteratorIterator

All Implemented Interfaces:

java.util.Iterator

public abstract class IteratorIterator
extends IteratorAdapter

An iterator that takes an iterator over objects that themselves produce iterators, and which iterators over the elements in the sub-iterators. To get the iterators from the objects iterated over, the method iterator() must be over-ridden to convert a given result from the top-level iterator into a sub-iterator.

Version:

$Id: IteratorIterator.java 47896 2008-01-24 02:07:38Z cxh $

Author:

John Reekie

Field Summary

private java.util.Iterator	_iterator
private java.util.Iterator	_subiterator

Constructor Summary

IteratorIterator(java.util.Iterator i)

Method Summary

boolean	hasNext()
protected abstract java.util.Iterator	iterator(java.lang.Object o)
java.lang.Object	next()

Methods inherited from class diva.util.IteratorAdapter

remove

Methods inherited from class java.lang.Object

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

Field Detail

_iterator

private java.util.Iterator _iterator

_subiterator

private java.util.Iterator _subiterator

Constructor Detail

IteratorIterator

public IteratorIterator(java.util.Iterator i)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator

Overrides:

hasNext in class IteratorAdapter

iterator

protected abstract java.util.Iterator iterator(java.lang.Object o)

next

public java.lang.Object next()
                      throws java.util.NoSuchElementException

Specified by:

next in interface java.util.Iterator

Overrides:

next in class IteratorAdapter

Throws:

java.util.NoSuchElementException