org.springframework.util

Class CompositeIterator<E>

java.lang.Object

org.springframework.util.CompositeIterator<E>

All Implemented Interfaces:

java.util.Iterator<E>

public class CompositeIterator<E>
extends java.lang.Object
implements java.util.Iterator<E>

Composite iterator that combines multiple other iterators, as registered via add(Iterator).

This implementation maintains a linked set of iterators which are invoked in sequence until all iterators are exhausted.

Since:

3.0

Author:

Erwin Vervaet, Juergen Hoeller

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	inUse
private java.util.Set<java.util.Iterator<E>>	iterators

Constructor Summary

Constructors

Constructor and Description
CompositeIterator()

Method Summary

Modifier and Type	Method and Description
void	add(java.util.Iterator<E> iterator) Add given iterator to this composite.
boolean	hasNext()
E	next()
void	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

Field Detail

iterators

private final java.util.Set<java.util.Iterator<E>> iterators

inUse

private boolean inUse

Constructor Detail

CompositeIterator

public CompositeIterator()

Method Detail

add

public void add(java.util.Iterator<E> iterator)

Add given iterator to this composite.

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<E>

next

public E next()

Specified by:

next in interface java.util.Iterator<E>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<E>