ChildContext (Commons JXPath 1.3 API)

java.lang.Object
- org.apache.commons.jxpath.ri.EvalContext
- - org.apache.commons.jxpath.ri.axes.ChildContext

All Implemented Interfaces:

Iterator, ExpressionContext
```
public class ChildContext
extends EvalContext
```
EvalContext that can walk the "child::", "following-sibling::" and "preceding-sibling::" axes.

Version:

$Revision: 652903 $ $Date: 2008-05-02 22:46:32 +0200 (Fr, 02 Mai 2008) $

Author:

Dmitri Plotnikov

Field Summary
- Fields inherited from class org.apache.commons.jxpath.ri.EvalContext
  parentContext, position, rootContext

Constructor Summary

Constructors
Constructor and Description
`ChildContext(EvalContext parentContext, NodeTest nodeTest, boolean startFromParentLocation, boolean reverse)` Create a new ChildContext.

Method Summary

Methods
Modifier and Type	Method and Description
`NodePointer`	`getCurrentNodePointer()` Returns the current context node.
`Pointer`	`getSingleNodePointer()` This method is called on the last context on the path when only one value is needed.
`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
  - ChildContext
```
public ChildContext(EvalContext parentContext,
            NodeTest nodeTest,
            boolean startFromParentLocation,
            boolean reverse)
```
    Create a new ChildContext.
    
    Parameters:
    parentContext - parent EvalContext
    nodeTest - NodeTest
    startFromParentLocation - whether to start from parent location
    reverse - whether to iterate in reverse
- Method Detail
  - 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
  - getSingleNodePointer
```
public Pointer getSingleNodePointer()
```
    This method is called on the last context on the path when only one value is needed. Note that this will return the whole property, even if it is a collection. It will not extract the first element of the collection. For example, "books" will return the collection of books rather than the first book from that collection.
    
    Overrides:
    
    getSingleNodePointer in class EvalContext
    
    Returns:
    Pointer
  - 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

Class ChildContext

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

ChildContext

Method Detail

getCurrentNodePointer

getSingleNodePointer

nextNode

reset

setPosition