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:

ExpressionContext, java.util.Iterator

public class SelfContext

extends EvalContext

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

Version:

$Revision: 1.12 $ $Date: 2004/02/29 14:17:37 $

Author:

Dmitri Plotnikov

Field Summary

private NodePointer	nodePointer
private NodeTest	nodeTest
private boolean	startedSet

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

parentContext, position, rootContext

Constructor Summary

SelfContext(EvalContext parentContext, NodeTest nodeTest)

Method Summary

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, toString

Methods inherited from class java.lang.Object

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

Field Detail

nodeTest

private NodeTest nodeTest

startedSet

private boolean startedSet

nodePointer

private NodePointer nodePointer

Constructor Detail

SelfContext

public SelfContext(EvalContext parentContext,
                   NodeTest nodeTest)

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

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

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

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