net.sf.saxon.expr

Class MultiIterator<T>

java.lang.Object

net.sf.saxon.expr.MultiIterator<T>

All Implemented Interfaces:

Iterator<T>

public class MultiIterator<T>
extends Object
implements Iterator<T>

An iterator that combines the results of a sequence of iterators

Constructor Summary

Constructors

Constructor and Description
MultiIterator(List<Iterator<T>> array) Create an iterator that concatenates a number of supplied iterators

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() Returns true if the iteration has more elements.
T	next() Returns the next element in the iteration.
void	remove() Removes from the underlying collection the last element returned by the iterator (optional operation).

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

MultiIterator

public MultiIterator(List<Iterator<T>> array)

Create an iterator that concatenates a number of supplied iterators

Parameters:

array - the iterators to be concatenated

Method Detail

hasNext

public boolean hasNext()

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Specified by:

hasNext in interface Iterator<T>

Returns:

true if the iterator has more elements.

next

public T next()

Returns the next element in the iteration.

Specified by:

next in interface Iterator<T>

Returns:

the next element in the iteration.

Throws:

NoSuchElementException - iteration has no more elements.

remove

public void remove()

Removes from the underlying collection the last element returned by the iterator (optional operation). This method can be called only once per call to next. The behavior of an iterator is unspecified if the underlying collection is modified while the iteration is in progress in any way other than by calling this method.

Specified by:

remove in interface Iterator<T>

Throws:

UnsupportedOperationException - if the remove operation is not supported by this Iterator.

IllegalStateException - if the next method has not yet been called, or the remove method has already been called after the last call to the next method.