net.sf.saxon.expr
Class PairIterator

java.lang.Object
  net.sf.saxon.expr.PairIterator

All Implemented Interfaces:

Iterator

public class PairIterator
extends Object
implements Iterator

An iterator over a pair of objects (typically sub-expressions of an expression)

Constructor Summary

PairIterator(Object one, Object two)
Create an iterator over two objects

Method Summary

boolean	hasNext() Returns true if the iteration has more elements.
Object	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

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

Constructor Detail

PairIterator

public PairIterator(Object one,
                    Object two)

Create an iterator over two objects

Parameters:

one - the first object to be returned

two - the second object to be returned

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

Returns:

true if the iterator has more elements.

next

public Object next()

Returns the next element in the iteration.

Specified by:

next in interface Iterator

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

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.