org.apache.commons.jxpath.ri.model.jdom
Class JDOMNodeIterator

java.lang.Object
  org.apache.commons.jxpath.ri.model.jdom.JDOMNodeIterator

All Implemented Interfaces:

NodeIterator

public class JDOMNodeIterator
extends java.lang.Object
implements NodeIterator

An iterator of children of a JDOM Node.

Version:

$Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $

Author:

Dmitri Plotnikov

Field Summary

private java.lang.Object	child
private java.util.List	children
private int	index
private NodeTest	nodeTest
private NodePointer	parent
private int	position
private boolean	reverse

Constructor Summary

JDOMNodeIterator(NodePointer parent, NodeTest nodeTest, boolean reverse, NodePointer startWith)
Create a new JDOMNodeIterator.

Method Summary

NodePointer	getNodePointer() Get the NodePointer at the current position.
int	getPosition() Get the current iterator position.
private boolean	next() Iterate to next pointer.
private boolean	previous() This is actually never invoked during the normal evaluation of xpaths - an iterator is always going forward, never backwards.
boolean	setPosition(int position) Set the new current position.
private boolean	testChild() Test a child node.

Methods inherited from class java.lang.Object

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

Field Detail

parent

private NodePointer parent

nodeTest

private NodeTest nodeTest

reverse

private boolean reverse

position

private int position

index

private int index

children

private java.util.List children

child

private java.lang.Object child

Constructor Detail

JDOMNodeIterator

public JDOMNodeIterator(NodePointer parent,
                        NodeTest nodeTest,
                        boolean reverse,
                        NodePointer startWith)

Create a new JDOMNodeIterator.

Parameters:

parent - pointer

nodeTest - test

reverse - whether to iterate in reverse

startWith - starting pointer

Method Detail

getNodePointer

public NodePointer getNodePointer()

Description copied from interface: NodeIterator

Get the NodePointer at the current position.

Specified by:

getNodePointer in interface NodeIterator

Returns:

NodePointer

getPosition

public int getPosition()

Description copied from interface: NodeIterator

Get the current iterator position.

Specified by:

getPosition in interface NodeIterator

Returns:

int position

setPosition

public boolean setPosition(int position)

Description copied from interface: NodeIterator

Set the new current position.

Specified by:

setPosition in interface NodeIterator

Parameters:

position - the position to set

Returns:

true if there is a node at position.

previous

private boolean previous()

This is actually never invoked during the normal evaluation of xpaths - an iterator is always going forward, never backwards. So, this is implemented only for completeness and perhaps for those who use these iterators outside of XPath evaluation.

Returns:

boolean

next

private boolean next()

Iterate to next pointer.

Returns:

whether valid

testChild

private boolean testChild()

Test a child node.

Returns:

whether test passes.