Package org.apache.commons.jxpath.ri.axes

Class AttributeContext

java.lang.Object

org.apache.commons.jxpath.ri.EvalContext

org.apache.commons.jxpath.ri.axes.AttributeContext

All Implemented Interfaces:

ExpressionContext

public class AttributeContext
extends EvalContext

EvalContext that walks the "attribute::" axis.

Version:

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

Author:

Dmitri Plotnikov

Field Summary

Fields

Modifier and Type	Field	Description
private NodePointer	currentNodePointer
private NodeIterator	iterator
private NodeTest	nodeTest
private boolean	setStarted
private static QName	WILDCARD

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

parentContext, position, rootContext

Constructor Summary

Constructors

Constructor	Description
AttributeContext(EvalContext parentContext, NodeTest nodeTest)	Create a new AttributeContext.

Method Summary

Modifier and Type	Method	Description
NodePointer	getCurrentNodePointer()	Returns the current context node.
boolean	nextNode()	Returns true if there is another object in the current set.
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, getSingleNodePointer, getValue, hasNext, isChildOrderingRequired, next, nextSet, remove, sortPointers, toString

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from class java.lang.Object

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

Field Detail

WILDCARD

private static final QName WILDCARD

nodeTest

private NodeTest nodeTest

setStarted

private boolean setStarted

iterator

private NodeIterator iterator

currentNodePointer

private NodePointer currentNodePointer

Constructor Detail

AttributeContext

public AttributeContext(EvalContext parentContext,
                        NodeTest nodeTest)

Create a new AttributeContext.

Parameters:

parentContext - represents the previous step on the path

nodeTest - is the name of the attribute we are looking for

Method Detail

getCurrentNodePointer

public NodePointer getCurrentNodePointer()

Description copied from class: EvalContext

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

Specified by:

getCurrentNodePointer in class EvalContext

Returns:

NodePoiner

reset

public void reset()

Description copied from class: EvalContext

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

Overrides:

reset in class EvalContext

setPosition

public boolean setPosition(int position)

Description copied from class: 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.

Overrides:

setPosition in class EvalContext

Parameters:

position - to set

Returns:

boolean

nextNode

public boolean nextNode()

Description copied from class: EvalContext

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

Specified by:

nextNode in class EvalContext

Returns:

boolean