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

Class SelfContext

java.lang.Object

org.apache.commons.jxpath.ri.EvalContext

org.apache.commons.jxpath.ri.axes.SelfContext

All Implemented Interfaces:

java.util.Iterator, ExpressionContext

public class SelfContext
extends EvalContext

EvalContext that returns the current node from the parent context if the test succeeds.

Version:

$Revision: 670727 $ $Date: 2008-06-23 15:10:38 -0500 (Mon, 23 Jun 2008) $

Field Summary

Fields

Modifier and Type	Field	Description
private NodePointer	nodePointer
private NodeTest	nodeTest
private boolean	startedSet

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

parentContext, position, rootContext

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
NodePointer	getCurrentNodePointer()	Returns the current context node.
Pointer	getSingleNodePointer()	Returns the first encountered Pointer that matches the current context's criteria.
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, getValue, hasNext, isChildOrderingRequired, next, nextSet, remove, sortPointers, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

nodeTest

private NodeTest nodeTest

startedSet

private boolean startedSet

nodePointer

private NodePointer nodePointer

Constructor Detail

SelfContext

public SelfContext(EvalContext parentContext,
                   NodeTest nodeTest)

Create a new SelfContext.

Parameters:

parentContext - EvalContext

nodeTest - guard

Method Detail

getSingleNodePointer

public Pointer getSingleNodePointer()

Description copied from class: EvalContext

Returns the first encountered Pointer that matches the current context's criteria.

Overrides:

getSingleNodePointer in class EvalContext

Returns:

Pointer

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

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

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