net.sf.saxon.tree.util

Class Navigator.PrecedingEnumeration

java.lang.Object

net.sf.saxon.tree.iter.AxisIteratorImpl

net.sf.saxon.tree.util.Navigator.PrecedingEnumeration

All Implemented Interfaces:

SequenceIterator, AxisIterator, UnfailingIterator

Enclosing class:

Navigator

public static final class Navigator.PrecedingEnumeration
extends AxisIteratorImpl

Helper method to iterate over the preceding axis, or Saxon's internal preceding-or-ancestor axis, by making use of the ancestor, descendant, and preceding-sibling axes.

Field Summary

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

ATOMIZING, GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

Constructors

Constructor and Description
Navigator.PrecedingEnumeration(NodeInfo start, boolean includeAncestors) Create an iterator for the preceding or "preceding-or-ancestor" axis (the latter being used internall to support xsl:number)

Method Summary

Methods

Modifier and Type	Method and Description
AxisIterator	getAnother() Get another iterator over the same sequence of items, positioned at the start of the sequence.
NodeInfo	next() Get the next item in the sequence.

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

close, getProperties

Methods inherited from class java.lang.Object

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

Constructor Detail

Navigator.PrecedingEnumeration

public Navigator.PrecedingEnumeration(NodeInfo start,
                              boolean includeAncestors)

Create an iterator for the preceding or "preceding-or-ancestor" axis (the latter being used internall to support xsl:number)

Parameters:

start - the initial context node

includeAncestors - true if ancestors of the initial context node are to be included in the result

Method Detail

next

public final NodeInfo next()

Description copied from interface: UnfailingIterator

Get the next item in the sequence.

Returns:

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

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.

Returns:

a new iterator over the same sequence