net.sf.saxon.tree.util

Class Navigator.AncestorEnumeration

java.lang.Object

net.sf.saxon.tree.iter.AxisIteratorImpl

net.sf.saxon.tree.util.Navigator.BaseEnumeration

net.sf.saxon.tree.util.Navigator.AncestorEnumeration

All Implemented Interfaces:

SequenceIterator<NodeInfo>, AxisIterator<NodeInfo>, UnfailingIterator<NodeInfo>

Enclosing class:

Navigator

public static final class Navigator.AncestorEnumeration
extends Navigator.BaseEnumeration

General-purpose implementation of the ancestor and ancestor-or-self axes

Field Summary

Fields inherited from class net.sf.saxon.tree.iter.AxisIteratorImpl

current, position

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

GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

Constructors

Constructor and Description
Navigator.AncestorEnumeration(NodeInfo start, boolean includeSelf) Create an iterator over the ancestor or ancestor-or-self axis

Method Summary

Methods

Modifier and Type	Method and Description
void	advance() The advance() method must be provided in each concrete implementation.
AxisIterator	getAnother() Get another iterator over the same sequence of items, positioned at the start of the sequence.

Methods inherited from class net.sf.saxon.tree.util.Navigator.BaseEnumeration

next

Methods inherited from class net.sf.saxon.tree.iter.AxisIteratorImpl

atomize, close, current, getProperties, getStringValue, iterateAxis, moveNext, position

Methods inherited from class java.lang.Object

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

Constructor Detail

Navigator.AncestorEnumeration

public Navigator.AncestorEnumeration(NodeInfo start,
                             boolean includeSelf)

Create an iterator over the ancestor or ancestor-or-self axis

Parameters:

start - the initial context node

includeSelf - true if the "self" node is to be included

Method Detail

advance

public void advance()

Description copied from class: Navigator.BaseEnumeration

The advance() method must be provided in each concrete implementation. It must leave the variable current set to the next node to be returned in the iteration, or to null if there are no more nodes to be returned.

Specified by:

advance in class Navigator.BaseEnumeration

getAnother

public AxisIterator getAnother()

Description copied from interface: UnfailingIterator

Get another iterator over the same sequence of items, positioned at the start of the sequence. It must be possible to call this method at any time, whether none, some, or all of the items in the original iterator have been read. The method is non-destructive: it does not change the state of the original iterator.

Specified by:

getAnother in interface SequenceIterator<NodeInfo>

Specified by:

getAnother in interface AxisIterator<NodeInfo>

Specified by:

getAnother in interface UnfailingIterator<NodeInfo>

Specified by:

getAnother in class Navigator.BaseEnumeration

Returns:

a new iterator over the same sequence