net.sf.saxon.tree.tiny

Class PrecedingEnumeration

java.lang.Object

net.sf.saxon.tree.iter.AxisIteratorImpl

net.sf.saxon.tree.tiny.PrecedingEnumeration

All Implemented Interfaces:

SequenceIterator, AxisIterator, UnfailingIterator

final class PrecedingEnumeration
extends AxisIteratorImpl

Enumerate all the nodes on the preceding axis from a given start node. The calling code ensures that the start node is not a root, attribute, or namespace node. As well as the standard XPath preceding axis, this class also implements a Saxon-specific "preceding-or-ancestor" axis which returns ancestor nodes as well as preceding nodes. This is used when performing xsl:number level="any".

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
PrecedingEnumeration(TinyTree doc, TinyNodeImpl node, NodeTest nodeTest, boolean includeAncestors)

Method Summary

Methods

Modifier and Type	Method and Description
SequenceIterator	getAnother() Get another enumeration of the same nodes
Item	next() Get the next item in the sequence.

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

PrecedingEnumeration

public PrecedingEnumeration(TinyTree doc,
                    TinyNodeImpl node,
                    NodeTest nodeTest,
                    boolean includeAncestors)

Method Detail

next

public Item next()

Description copied from interface: SequenceIterator

Get the next item in the sequence. This method changes the state of the iterator, in particular it affects the result of subsequent calls of position() and current().

Returns:

the next item, or null if there are no more items. Once a call on next() has returned null, no further calls should be made. The preferred action for an iterator if subsequent calls on next() are made is to return null again, and all implementations within Saxon follow this rule.

getAnother

public SequenceIterator getAnother()

Get another enumeration of the same nodes

Returns:

a SequenceIterator that iterates over the same items, positioned before the first item