Package org.loboevolution.apache.xpath.axes

Class ReverseAxesWalker

java.lang.Object

org.loboevolution.apache.xpath.Expression

org.loboevolution.apache.xpath.patterns.NodeTest

org.loboevolution.apache.xpath.axes.PredicatedNodeTest

org.loboevolution.apache.xpath.axes.AxesWalker

org.loboevolution.apache.xpath.axes.ReverseAxesWalker

All Implemented Interfaces:

Cloneable, SourceLocator, PathComponent, SubContextList, ExpressionNode, XPathVisitable

public class ReverseAxesWalker
extends AxesWalker

Walker for a reverse axes.

See Also:

• XPath 2.4 Predicates

Field Summary

Fields

Modifier and Type	Field	Description
protected DTMAxisIterator	m_iterator	The DTM inner traversal class, that corresponds to the super axis.

Fields inherited from class org.loboevolution.apache.xpath.axes.AxesWalker

m_axis, m_nextWalker, m_traverser

Fields inherited from class org.loboevolution.apache.xpath.axes.PredicatedNodeTest

m_foundLast, m_lpi, m_predCount, m_proximityPositions

Fields inherited from class org.loboevolution.apache.xpath.patterns.NodeTest

m_name, m_whatToShow, SCORE_NODETEST, SCORE_NONE, SCORE_NSWILD, SCORE_OTHER, SCORE_QNAME, SHOW_BYFUNCTION, WILD

Method Summary

Modifier and Type	Method	Description
protected void	countProximityPosition(int i)	Count forward one proximity position.
void	detach()	Detaches the walker from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state.
int	getLastPos(XPathContext xctxt)	Get the number of nodes in the node list, which, in the XSLT 1 based counting system, is the last index position.
protected int	getNextNode()	Get the next node in document order on the axes.
protected int	getProximityPosition(int predicateIndex)	Get the current sub-context position.
boolean	isReverseAxes()	Tells if this is a reverse axes.
void	setRoot(int root)	Set the root node of the TreeWalker.

Methods inherited from class org.loboevolution.apache.xpath.axes.AxesWalker

callVisitors, clone, deepEquals, getAnalysisBits, getAxis, getDTM, getNextWalker, getRoot, init, nextNode, setNextWalker, setPrevWalker, wi

Methods inherited from class org.loboevolution.apache.xpath.axes.PredicatedNodeTest

acceptNode, callPredicateVisitors, canTraverseOutsideSubtree, getPredicate, getPredicateCount, getProximityPosition, getProximityPosition, initPredicateInfo, initProximityPosition, nodeToString, resetProximityPositions, setLocPathIterator, setPredicateCount

Methods inherited from class org.loboevolution.apache.xpath.patterns.NodeTest

calcScore, execute, execute, execute, getLocalName, getNamespace, getNodeTypeTest, getStaticScore, getWhatToShow, initNodeTest, initNodeTest, setLocalName, setNamespace, setStaticScore, setWhatToShow

Methods inherited from class org.loboevolution.apache.xpath.Expression

asIterator, asNode, assertion, bool, error, execute, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isSameClass, isStableNumber, num

Methods inherited from class java.lang.Object

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

Field Details

m_iterator

protected DTMAxisIterator m_iterator

The DTM inner traversal class, that corresponds to the super axis.

Method Details

setRoot

public void setRoot(int root)

Set the root node of the TreeWalker. (Not part of the DOM2 TreeWalker interface).

Overrides:

setRoot in class AxesWalker

Parameters:

root - The context node of this step.

detach

public void detach()

Detaches the walker from the set which it iterated over, releasing any computational resources and placing the iterator in the INVALID state.

Overrides:

detach in class AxesWalker

getNextNode

protected int getNextNode()

Get the next node in document order on the axes.

Overrides:

getNextNode in class AxesWalker

Returns:

the next node in document order on the axes, or null.

isReverseAxes

public boolean isReverseAxes()

Tells if this is a reverse axes.

Overrides:

isReverseAxes in class PredicatedNodeTest

Returns:

false, unless a derived class overrides.

getProximityPosition

protected int getProximityPosition(int predicateIndex)

Get the current sub-context position.

Overrides:

getProximityPosition in class PredicatedNodeTest

Parameters:

predicateIndex - The index of the predicate where the proximity should be taken from.

Returns:

The node position of this walker in the sub-context node list.

countProximityPosition

protected void countProximityPosition(int i)

Count forward one proximity position.

Overrides:

countProximityPosition in class PredicatedNodeTest

Parameters:

i - The index into the m_proximityPositions array, where the increment will occur.

getLastPos

public int getLastPos(XPathContext xctxt)

Get the number of nodes in the node list, which, in the XSLT 1 based counting system, is the last index position.

Specified by:

getLastPos in interface SubContextList

Overrides:

getLastPos in class AxesWalker

Parameters:

xctxt - The XPath runtime context.

Returns:

the number of nodes in the node list.