org.jboss.util.collection

Class CompoundIterator

java.lang.Object

org.jboss.util.collection.CompoundIterator

All Implemented Interfaces:

Iterator

public class CompoundIterator
extends Object
implements Iterator

A compound iterator, which iterates over all of the elements in the given iterators.

Version:

$Revision$

Author:

Jason Dillon

Field Summary

Fields

Modifier and Type	Field and Description
protected int	index The index of the current iterator.
protected Iterator[]	iters The array of iterators to iterate over.

Constructor Summary

Constructors

Constructor and Description
CompoundIterator(Iterator[] iters) Construct a CompoundIterator over the given array of iterators.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext() Check if there are more elements.
Object	next() Return the next element from the current iterator.
void	remove() Remove the current element from the current iterator.

Methods inherited from class java.lang.Object

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

Field Detail

iters

protected final Iterator[] iters

The array of iterators to iterate over.

index

protected int index

The index of the current iterator.

Constructor Detail

CompoundIterator

public CompoundIterator(Iterator[] iters)

Construct a CompoundIterator over the given array of iterators.

Parameters:

iters - Array of iterators to iterate over.

Throws:

IllegalArgumentException - Array is null or empty.

Method Detail

hasNext

public boolean hasNext()

Check if there are more elements.

Specified by:

hasNext in interface Iterator

Returns:

True if there are more elements.

next

public Object next()

Return the next element from the current iterator.

Specified by:

next in interface Iterator

Returns:

The next element from the current iterator.

Throws:

NoSuchElementException - There are no more elements.

remove

public void remove()

Remove the current element from the current iterator.

Specified by:

remove in interface Iterator

Throws:

IllegalStateException

UnsupportedOperationException