de.rwth.utils
Class IteratorMap

java.lang.Object
  |
  +--de.rwth.utils.IteratorMap

All Implemented Interfaces:

java.util.Iterator

public class IteratorMap

extends java.lang.Object

implements java.util.Iterator

An iterator created by applying an function to all elements of a base iterator.

Version:

$Id: IteratorMap.java,v 1.2 2002/09/17 06:53:53 mohnen Exp $

Author:

Markus Mohnen

Inner Class Summary

static interface

IteratorMap.Function The interface used to describe a function.

Field Summary

protected IteratorMap.Function	f The function to apply to the arguments.
protected java.util.Iterator	i The base iterator.

Constructor Summary

IteratorMap(java.util.Iterator i, IteratorMap.Function f)
Creates a new IteratorMap instance.

Method Summary

boolean	hasNext() Checks if there is another element pending.
static void	main(java.lang.String[] args) Mini test environment.
java.lang.Object	next() Returns the next element of the base iterator, with the function applied to it.
void	remove()

Methods inherited from class java.lang.Object

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

Field Detail

i

protected java.util.Iterator i

The base iterator.

f

protected IteratorMap.Function f

The function to apply to the arguments.

Constructor Detail

IteratorMap

public IteratorMap(java.util.Iterator i,
                   IteratorMap.Function f)

Creates a new IteratorMap instance.

Parameters:

i - an Iterator value

f - a Function value

Method Detail

next

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

Returns the next element of the base iterator, with the function applied to it.

Specified by:

next in interface java.util.Iterator

Returns:

an Object value

Throws:

java.util.NoSuchElementException - if there is no more element.

hasNext

public boolean hasNext()

Checks if there is another element pending.

Specified by:

hasNext in interface java.util.Iterator

Returns:

a boolean value

remove

public void remove()

Specified by:

remove in interface java.util.Iterator

main

public static void main(java.lang.String[] args)

Mini test environment.

Parameters:

args - a String[] value