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

java.lang.Object
  extended by org.apache.commons.jxpath.ri.EvalContext
      extended by 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) $
Author:
Dmitri Plotnikov

Field Summary
 
Fields inherited from class org.apache.commons.jxpath.ri.EvalContext
parentContext, position, rootContext
 
Constructor Summary
SelfContext(EvalContext parentContext, NodeTest nodeTest)
          Create a new SelfContext.
 
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, sortPointers, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

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


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