org.apache.clerezza.utils

Class IteratorMerger<T>

java.lang.Object

org.apache.clerezza.utils.IteratorMerger<T>

All Implemented Interfaces:

Iterator<T>

public class IteratorMerger<T>
extends Object
implements Iterator<T>

Flattens an Iterator of Iterators to an Iterator

Author:

reto

Field Summary

Fields

Modifier and Type	Field and Description
protected Iterator<Iterator<T>>	baseIterators This is the iterator of the merged iterators.
protected Iterator<T>	current This is the current iterator of the merged iterators.

Constructor Summary

Constructors

Constructor and Description
IteratorMerger(Collection<Collection<T>> collectionOfCollections) Constructs an iterator that iterates over all elements of the collections contained in the collection.
IteratorMerger(Iterator<Iterator<T>> baseIterators) constructs an iterator that will return the elements of the baseIterators
IteratorMerger(Iterator<T>... baseIterators) constructs an iterator that will return the elements of the baseIterators

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext()
T	next()
void	remove()

Methods inherited from class java.lang.Object

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

Field Detail

baseIterators

protected Iterator<Iterator<T>> baseIterators

This is the iterator of the merged iterators.

current

protected Iterator<T> current

This is the current iterator of the merged iterators. Over this iterator iterates the merged iterator currently.

Constructor Detail

IteratorMerger

public IteratorMerger(Iterator<Iterator<T>> baseIterators)

constructs an iterator that will return the elements of the baseIterators

Parameters:

baseIterators -

IteratorMerger

public IteratorMerger(Iterator<T>... baseIterators)

constructs an iterator that will return the elements of the baseIterators

Parameters:

baseIterators -

IteratorMerger

public IteratorMerger(Collection<Collection<T>> collectionOfCollections)

Constructs an iterator that iterates over all elements of the collections contained in the collection.

Parameters:

collectionOfCollections -

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>