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

java.lang.Object
  |
  +--org.apache.commons.jxpath.ri.EvalContext
        |
        +--org.apache.commons.jxpath.ri.axes.DescendantContext

All Implemented Interfaces:

ExpressionContext, java.util.Iterator

public class DescendantContext

extends EvalContext

An EvalContext that walks the "descendant::" and "descendant-or-self::" axes.

Version:

$Revision: 1.12 $ $Date: 2003/03/11 00:59:20 $

Author:

Dmitri Plotnikov

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

parentContext, position, rootContext

Constructor Summary

DescendantContext(EvalContext parentContext, boolean includeSelf, NodeTest nodeTest)

Method Summary

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, hasNext, next, nextSet, remove, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DescendantContext

public DescendantContext(EvalContext parentContext,
                         boolean includeSelf,
                         NodeTest nodeTest)

Method Detail

getCurrentNodePointer

public NodePointer getCurrentNodePointer()

Description copied from class: EvalContext

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

Overrides:

getCurrentNodePointer 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

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.

Overrides:

nextNode in class EvalContext