com.mware.ge.collection

Class CombiningIterator<T>

java.lang.Object

com.mware.ge.collection.PrefetchingIterator<T>

com.mware.ge.collection.CombiningIterator<T>

Type Parameters:

T - the type of items in the iteration.

All Implemented Interfaces:

Iterator<T>

Direct Known Subclasses:

CombiningResourceIterator

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

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

Methods inherited from class com.mware.ge.collection.PrefetchingIterator

hasNext, next, peek, remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

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>

nextIteratorOrNull

protected Iterator<T> nextIteratorOrNull()

currentIterator

protected Iterator<T> currentIterator()