ViewNode (Apache Commons Configuration 1.10 API)

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java.lang.Object
- org.apache.commons.configuration.tree.DefaultConfigurationNode
- - org.apache.commons.configuration.tree.ViewNode

All Implemented Interfaces:

Cloneable, ConfigurationNode
```
public class ViewNode
extends DefaultConfigurationNode
```
A specialized node implementation to be used in view configurations.

Some configurations provide a logical view on the nodes of other configurations. These configurations construct their own hierarchy of nodes based on the node trees of their source configurations. This special node class can be used for this purpose. It allows child nodes and attributes to be added without changing their parent node. So a node can belong to a hierarchy of nodes of a source configuration, but be also contained in a view configuration.

Since:

1.3

Version:

$Id: ViewNode.java 1206488 2011-11-26 16:42:41Z oheger $

Author:

Commons Configuration team

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.commons.configuration.tree.DefaultConfigurationNode
  DefaultConfigurationNode.SubNodes

Constructor Summary

Constructors
Constructor and Description

ViewNode()

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addAttribute(ConfigurationNode attr)` Adds an attribute to this view node.
`void`	`addChild(ConfigurationNode child)` Adds a child node to this view node.
`void`	`appendAttributes(ConfigurationNode source)` Adds all attribute nodes of the given source node to this view node.
`void`	`appendChildren(ConfigurationNode source)` Adds all child nodes of the given source node to this view node.

Methods inherited from class org.apache.commons.configuration.tree.DefaultConfigurationNode
checkState, clone, createSubNodes, getAttribute, getAttributeCount, getAttributeCount, getAttributes, getAttributes, getChild, getChildren, getChildren, getChildrenCount, getChildrenCount, getName, getParentNode, getReference, getValue, isAttribute, isDefined, removeAttribute, removeAttribute, removeAttributes, removeChild, removeChild, removeChildren, removeReference, setAttribute, setName, setParentNode, setReference, setValue, visit

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ViewNode
```
public ViewNode()
```
- Method Detail
  - addAttribute
```
public void addAttribute(ConfigurationNode attr)
```
    Adds an attribute to this view node. The new attribute's parent node will be saved.
    
    Specified by:
    
    addAttribute in interface ConfigurationNode
    
    Overrides:
    
    addAttribute in class DefaultConfigurationNode
    
    Parameters:
    attr - the attribute node to be added
  - addChild
```
public void addChild(ConfigurationNode child)
```
    Adds a child node to this view node. The new child's parent node will be saved.
    
    Specified by:
    
    addChild in interface ConfigurationNode
    
    Overrides:
    
    addChild in class DefaultConfigurationNode
    
    Parameters:
    child - the child node to be added
  - appendAttributes
```
public void appendAttributes(ConfigurationNode source)
```
    Adds all attribute nodes of the given source node to this view node.
    
    Parameters:
    source - the source node
  - appendChildren
```
public void appendChildren(ConfigurationNode source)
```
    Adds all child nodes of the given source node to this view node.
    
    Parameters:
    source - the source node

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