org.apache.xpath.axes
Class DescendantOrSelfWalker

java.lang.Object
  |
  +--org.apache.xpath.Expression
        |
        +--org.apache.xpath.patterns.NodeTest
              |
              +--org.apache.xpath.axes.AxesWalker
                    |
                    +--org.apache.xpath.axes.DescendantWalker
                          |
                          +--org.apache.xpath.axes.DescendantOrSelfWalker
Direct Known Subclasses:
KeyWalker

public class DescendantOrSelfWalker
extends DescendantWalker

Walker for the 'descendant-or-self' axes.

See Also:
XPath axes descriptions

Fields inherited from class org.apache.xpath.patterns.NodeTest
SCORE_NONE, SHOW_BYFUNCTION, SHOW_NAMESPACE, WILD
 
Constructor Summary
DescendantOrSelfWalker(LocPathIterator locPathIterator)
          Construct a DescendantOrSelfWalker using a LocPathIterator.
 
Method Summary
 Node firstChild()
          Moves the TreeWalker to the first visible child of the current node, and returns the new node.
 void setRoot(Node root)
          Set the root node of the TreeWalker.
 
Methods inherited from class org.apache.xpath.axes.DescendantWalker
nextSibling, parentNode
 
Methods inherited from class org.apache.xpath.axes.AxesWalker
acceptNode, clone, getCurrentNode, getExpandEntityReferences, getFilter, getLastPos, getLocPathIterator, getNextWalker, getPredicateCount, getPredicateIndex, getPrevWalker, getProximityPosition, getProximityPosition, getRoot, init, initProximityPosition, isReverseAxes, lastChild, nextNode, previousNode, previousSibling, reset, resetProximityPositions, setCurrentNode, setLocPathIterator, setNextWalker, setPredicateCount, setPrevWalker, toString
 
Methods inherited from class org.apache.xpath.patterns.NodeTest
debugWhatToShow, execute, getDefaultScore, getLocalName, getNamespace, getWhatToShow, initNodeTest, initNodeTest
 
Methods inherited from class org.apache.xpath.Expression
assert, error, warn
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

DescendantOrSelfWalker

public DescendantOrSelfWalker(LocPathIterator locPathIterator)
Construct a DescendantOrSelfWalker using a LocPathIterator.
Method Detail

setRoot

public void setRoot(Node root)
Set the root node of the TreeWalker.
Overrides:
setRoot in class DescendantWalker

firstChild

public Node firstChild()
Moves the TreeWalker to the first visible child of the current node, and returns the new node. If the current node has no visible children, returns null , and retains the current node.
Returns:
The new node, or null if the current node has no visible children in the TreeWalker's logical view.
Overrides:
firstChild in class DescendantWalker


Copyright © 2000 Apache XML Project. All Rights Reserved.