net.sf.saxon.tree.jiter

Class ConcatenatingIterator<E>

java.lang.Object

net.sf.saxon.tree.jiter.ConcatenatingIterator<E>

All Implemented Interfaces:

Iterator<E>

public class ConcatenatingIterator<E>
extends Object
implements Iterator<E>

An iterator over nodes, that concatenates the nodes returned by two supplied iterators.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Iterator<? extends E>	active
(package private) Iterator<? extends E>	first
(package private) Supplier<Iterator<? extends E>>	second

Constructor Summary

Constructors

Constructor and Description
ConcatenatingIterator(Iterator<? extends E> first, Supplier<Iterator<? extends E>> second) Create an iterator that concatenates the results of two supplied iterator.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
E	next() Get the next item in the sequence.

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, remove

Field Detail

first

Iterator<? extends E> first

second

Supplier<Iterator<? extends E>> second

active

Iterator<? extends E> active

Constructor Detail

ConcatenatingIterator

public ConcatenatingIterator(Iterator<? extends E> first,
                             Supplier<Iterator<? extends E>> second)

Create an iterator that concatenates the results of two supplied iterator. The second iterator isn't created until it is actually needed.

Parameters:

first - the first iterator

second - a function that can be called to supply the second iterator

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

next

public E next()

Get the next item in the sequence.

Specified by:

next in interface Iterator<E>

Returns:

the next Item. If there are no more items, return null.