net.sf.rubycollect4j.iter

Class ChunkIterator<E,K>

java.lang.Object

net.sf.rubycollect4j.iter.ChunkIterator<E,K>

Type Parameters:

E - the type of the elements

K - the type of the transformed elements

All Implemented Interfaces:

java.util.Iterator<java.util.Map.Entry<K,RubyArray<E>>>

public final class ChunkIterator<E,K>
extends java.lang.Object
implements java.util.Iterator<java.util.Map.Entry<K,RubyArray<E>>>

ChunkIterator transforms elements first, and then puts the original elements together if elements which are next to each others have the same transformed value. Chucked elements are placed into an Entry which uses transformed value as key and a RubyArray of elements as value.

Constructor Summary

Constructors

Constructor and Description
ChunkIterator(java.util.Iterator<? extends E> iter, TransformBlock<? super E,? extends K> block) Creates a ChunkIterator.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext()
java.util.Map.Entry<K,RubyArray<E>>	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

ChunkIterator

public ChunkIterator(java.util.Iterator<? extends E> iter,
             TransformBlock<? super E,? extends K> block)

Creates a ChunkIterator.

Parameters:

iter - an Iterator

block - to transform each element

Throws:

java.lang.NullPointerException - if iterator or block is null

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<java.util.Map.Entry<K,RubyArray<E>>>

next

public java.util.Map.Entry<K,RubyArray<E>> next()

Specified by:

next in interface java.util.Iterator<java.util.Map.Entry<K,RubyArray<E>>>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<java.util.Map.Entry<K,RubyArray<E>>>