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org.apache.commons.jxpath.ri.axes
Class ChildContext  

java.lang.Object
  org.apache.commons.jxpath.ri.EvalContext
      org.apache.commons.jxpath.ri.axes.ChildContext

All Implemented Interfaces:

org.apache.commons.jxpath.ExpressionContext, java.util.Iterator

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public class ChildContext

extends org.apache.commons.jxpath.ri.EvalContext

EvalContext that can walk the "child::", "following-sibling::" and "preceding-sibling::" axes.

Version:

$Revision: 1.16 $ $Date: 2004/03/25 03:49:50 $

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Field Summary
private  org.apache.commons.jxpath.ri.model.NodeIterator	iterator
private  org.apache.commons.jxpath.ri.compiler.NodeTest	nodeTest
private  boolean	reverse
private  boolean	startFromParentLocation

 

Fields inherited from class org.apache.commons.jxpath.ri.EvalContext

parentContext, position, rootContext

 

Constructor Summary

ChildContext(org.apache.commons.jxpath.ri.EvalContext parentContext, org.apache.commons.jxpath.ri.compiler.NodeTest nodeTest, boolean startFromParentLocation, boolean reverse)

 

Method Summary
org.apache.commons.jxpath.ri.model.NodePointer	getCurrentNodePointer()           Returns the current context node.
org.apache.commons.jxpath.Pointer	getSingleNodePointer()           This method is called on the last context on the path when only one value is needed.
boolean	nextNode()           Returns true if there is another object in the current set.
private  void	prepare()           Allocates a PropertyIterator.
void	reset()           Sets current position = 0, which is the pre-iteration state.
boolean	setPosition(int position)           Moves the current position to the specified index.

 

Methods inherited from class org.apache.commons.jxpath.ri.EvalContext

getContextNodeList, getContextNodePointer, getCurrentPosition, getDocumentOrder, getJXPathContext, getNodeSet, getPosition, getRootContext, getValue, hasNext, isChildOrderingRequired, next, nextSet, remove, toString

 

Methods inherited from class java.lang.Object

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

 

Field Detail

nodeTest

private org.apache.commons.jxpath.ri.compiler.NodeTest nodeTest

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startFromParentLocation

private boolean startFromParentLocation

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reverse

private boolean reverse

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iterator

private org.apache.commons.jxpath.ri.model.NodeIterator iterator

Constructor Detail

ChildContext

public ChildContext(org.apache.commons.jxpath.ri.EvalContext parentContext,
                    org.apache.commons.jxpath.ri.compiler.NodeTest nodeTest,
                    boolean startFromParentLocation,
                    boolean reverse)

Method Detail

getCurrentNodePointer

public org.apache.commons.jxpath.ri.model.NodePointer getCurrentNodePointer()

Description copied from class: org.apache.commons.jxpath.ri.EvalContext

Returns the current context node. Undefined before the beginning of the iteration.

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getSingleNodePointer

public org.apache.commons.jxpath.Pointer getSingleNodePointer()

This method is called on the last context on the path when only one value is needed. Note that this will return the whole property, even if it is a collection. It will not extract the first element of the collection. For example, "books" will return the collection of books rather than the first book from that collection.

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nextNode

public boolean nextNode()

Description copied from class: org.apache.commons.jxpath.ri.EvalContext

Returns true if there is another object in the current set. Switches the current position and node to the next object.

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reset

public void reset()

Description copied from class: org.apache.commons.jxpath.ri.EvalContext

Sets current position = 0, which is the pre-iteration state.

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setPosition

public boolean setPosition(int position)

Description copied from class: org.apache.commons.jxpath.ri.EvalContext

Moves the current position to the specified index. Used with integer predicates to quickly get to the n'th element of the node set. Returns false if the position is out of the node set range. You can call it with 0 as the position argument to restart the iteration.

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prepare

private void prepare()

Allocates a PropertyIterator.

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Home >> All >> org >> apache >> commons >> jxpath >> ri >> [ axes overview ]	PREV CLASS  NEXT CLASS
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