org.infinispan.commons.util

Class ConcatIterator<E>

java.lang.Object

org.infinispan.commons.util.AbstractIterator<E>

org.infinispan.commons.util.ConcatIterator<E>

All Implemented Interfaces:

AutoCloseable, Iterator<E>, CloseableIterator<E>

public class ConcatIterator<E>
extends AbstractIterator<E>
implements CloseableIterator<E>

Iterator that concatenates a bunch of iterables into 1 big iterator. Each iterable is retrieved lazily as requested. Note that if any of the produced iterators from the iterable implement CloseableIterator they will be closed when iterated upon fully or the last used iterator will be close when this iterator this closed.

Removal is implemented and will invoke remove on the last used iterator

Since:

9.3

Author:

wburns

Constructor Summary

Constructors

Constructor and Description
ConcatIterator(Iterable<? extends Iterable<E>> iterableIterables)

Method Summary

Modifier and Type	Method and Description
void	close()
protected E	getNext() Method to implement to provide an iterator implementation.
void	remove()

Methods inherited from class org.infinispan.commons.util.AbstractIterator

forEachRemaining, hasNext, next

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, hasNext, next

Constructor Detail

ConcatIterator

public ConcatIterator(Iterable<? extends Iterable<E>> iterableIterables)

Method Detail

getNext

protected E getNext()

Description copied from class: AbstractIterator

Method to implement to provide an iterator implementation. When this method returns null, the iterator is complete.

Specified by:

getNext in class AbstractIterator<E>

Returns:

the next value for the iterator to return or null for it to be complete.

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface CloseableIterator<E>

remove

public void remove()

Specified by:

remove in interface Iterator<E>