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

Class NodeSetContext

java.lang.Object

org.apache.commons.jxpath.ri.EvalContext

org.apache.commons.jxpath.ri.axes.NodeSetContext

All Implemented Interfaces:

ExpressionContext

Direct Known Subclasses:

UnionContext

public class NodeSetContext
extends EvalContext

A simple context that is based on a NodeSet.

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 NodeSet	nodeSet
private boolean	startedSet

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

parentContext, position, rootContext

Constructor Summary

Constructors

Constructor	Description
NodeSetContext(EvalContext parentContext, NodeSet nodeSet)	Create a new NodeSetContext.

Method Summary

Modifier and Type	Method	Description
NodePointer	getCurrentNodePointer()	Returns the current context node.
NodeSet	getNodeSet()	Returns the list of all Pointers in this context for all positions of the parent contexts.
boolean	nextNode()	Returns true if there is another object in the current set.
boolean	nextSet()	Returns true if there is another sets of objects to interate over.
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, getPosition, getRootContext, getSingleNodePointer, getValue, hasNext, isChildOrderingRequired, next, remove, reset, 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

startedSet

private boolean startedSet

nodeSet

private NodeSet nodeSet

Constructor Detail

NodeSetContext

public NodeSetContext(EvalContext parentContext,
                      NodeSet nodeSet)

Create a new NodeSetContext.

Parameters:

parentContext - parent context

nodeSet - associated NodeSet

Method Detail

getNodeSet

public NodeSet getNodeSet()

Description copied from class: EvalContext

Returns the list of all Pointers in this context for all positions of the parent contexts. If there was an ongoing iteration over this context, the method should not be called.

Overrides:

getNodeSet in class EvalContext

Returns:

NodeSet

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

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

nextSet

public boolean nextSet()

Description copied from class: EvalContext

Returns true if there is another sets of objects to interate over. Resets the current position and node.

Overrides:

nextSet in class EvalContext

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