org.apache.xpath.axes
Class ReverseAxesWalker

java.lang.Object
  org.apache.xpath.Expression
      org.apache.xpath.patterns.NodeTest
          org.apache.xpath.axes.PredicatedNodeTest
              org.apache.xpath.axes.AxesWalker
                  org.apache.xpath.axes.ReverseAxesWalker

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, javax.xml.transform.SourceLocator, PathComponent, SubContextList, ExpressionNode, ExpressionOwner, XPathVisitable

public class ReverseAxesWalker
extends AxesWalker

Walker for a reverse axes.

See Also:

XPath 2.4 Predicates, Serialized Form

Field Summary

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

SCORE_NODETEST, SCORE_NONE, SCORE_NSWILD, SCORE_OTHER, SCORE_QNAME, SHOW_BYFUNCTION, SUPPORTS_PRE_STRIPPING, WILD

Method Summary

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 this node list.
boolean	isDocOrdered() Returns true if all the nodes in the iteration well be returned in document order.
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.apache.xpath.axes.AxesWalker

callVisitors, clone, deepEquals, getAnalysisBits, getAxis, getCurrentNode, getDTM, getExpression, getNextWalker, getPrevWalker, getRoot, init, nextNode, setDefaultDTM, setExpression, setNextWalker, setPrevWalker, wi

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

acceptNode, callPredicateVisitors, canTraverseOutsideSubtree, fixupVariables, getLocPathIterator, getPredicate, getPredicateCount, getPredicateIndex, getProximityPosition, getProximityPosition, initProximityPosition, resetProximityPositions, setLocPathIterator, setPredicateCount

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

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

Methods inherited from class org.apache.xpath.Expression

asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr

Methods inherited from class java.lang.Object

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

Method Detail

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

isReverseAxes

public boolean isReverseAxes()

Tells if this is a reverse axes. Overrides AxesWalker#isReverseAxes.

Overrides:

isReverseAxes in class PredicatedNodeTest

Returns:

true for this class.

getLastPos

public int getLastPos(XPathContext xctxt)

Get the number of nodes in this node list. The function is probably ill named?

Specified by:

getLastPos in interface SubContextList

Overrides:

getLastPos in class AxesWalker

Parameters:

xctxt - The XPath runtime context.

Returns:

the number of nodes in this node list.

isDocOrdered

public boolean isDocOrdered()

Returns true if all the nodes in the iteration well be returned in document order. Warning: This can only be called after setRoot has been called!

Overrides:

isDocOrdered in class AxesWalker

Returns:

false.