org.neo4j.helpers.collection

Class CombiningIterator<T>

java.lang.Object

org.neo4j.helpers.collection.PrefetchingIterator<T>

org.neo4j.helpers.collection.CombiningIterator<T>

Type Parameters:

T - the type of items in the iteration.

All Implemented Interfaces:

Iterator<T>

public class CombiningIterator<T>
extends PrefetchingIterator<T>

Combining one or more Iterators, making them look like they were one big iterator. All iteration/combining is done lazily.

Constructor Summary

Constructors

Constructor and Description
CombiningIterator(Iterable<? extends Iterator<T>> iterators)
CombiningIterator(Iterator<? extends Iterator<T>> iterators)
CombiningIterator(T first, Iterator<T> rest)

Method Summary

Methods

Modifier and Type	Method and Description
protected Iterator<T>	currentIterator()
protected T	fetchNextOrNull()

Methods inherited from class org.neo4j.helpers.collection.PrefetchingIterator

getPrefetchedNextOrNull, hasNext, next, remove, setPrefetchedNext

Methods inherited from class java.lang.Object

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

Constructor Detail

CombiningIterator

public CombiningIterator(Iterable<? extends Iterator<T>> iterators)

CombiningIterator

public CombiningIterator(Iterator<? extends Iterator<T>> iterators)

CombiningIterator

public CombiningIterator(T first,
                 Iterator<T> rest)

Method Detail

fetchNextOrNull

protected T fetchNextOrNull()

Specified by:

fetchNextOrNull in class PrefetchingIterator<T>

currentIterator

protected Iterator<T> currentIterator()