net.sf.saxon.functions

Class Reverse.ReverseListIterator

java.lang.Object

net.sf.saxon.functions.Reverse.ReverseListIterator

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, LastPositionFinder, SequenceIterator, ReversibleIterator

Enclosing class:

Reverse

public static class Reverse.ReverseListIterator
extends java.lang.Object
implements SequenceIterator, LastPositionFinder, ReversibleIterator

Constructor Summary

Constructors

Constructor and Description
ReverseListIterator(java.util.List<T> list)

Method Summary

Modifier and Type	Method and Description
int	getLength() Get the last position (that is, the number of items in the sequence).
SequenceIterator	getReverseIterator() Get a new SequenceIterator that returns the same items in reverse order.
Item	next() Get the next item in the sequence.
boolean	supportsGetLength() Ask whether this iterator supports use of the LastPositionFinder.getLength() method.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.saxon.om.SequenceIterator

close, discharge

Constructor Detail

ReverseListIterator

public ReverseListIterator(java.util.List<T> list)

Method Detail

supportsGetLength

public boolean supportsGetLength()

Description copied from interface: LastPositionFinder

Ask whether this iterator supports use of the LastPositionFinder.getLength() method. This method should always be called before calling LastPositionFinder.getLength(), because an iterator that implements this interface may support use of LastPositionFinder.getLength() in some situations and not in others

Specified by:

supportsGetLength in interface LastPositionFinder

Returns:

true if the LastPositionFinder.getLength() method can be called to determine the length of the underlying sequence.

getLength

public int getLength()

Get the last position (that is, the number of items in the sequence).

Specified by:

getLength in interface LastPositionFinder

Returns:

the number of items in the sequence

next

public Item next()

Get the next item in the sequence.

Specified by:

next in interface SequenceIterator

Returns:

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

getReverseIterator

public SequenceIterator getReverseIterator()

Get a new SequenceIterator that returns the same items in reverse order. If this SequenceIterator is an AxisIterator, then the returned SequenceIterator must also be an AxisIterator.

Specified by:

getReverseIterator in interface ReversibleIterator

Returns:

an iterator over the items in reverse order