UndefinedNode (Apache LDAP API 2.1.1 API Documentation)

java.lang.Object
- org.apache.directory.api.ldap.model.filter.AbstractExprNode
- - org.apache.directory.api.ldap.model.filter.UndefinedNode

All Implemented Interfaces:

Cloneable, ExprNode
```
public final class UndefinedNode
extends AbstractExprNode
```
An empty class used for Undefined Nodes.

Version:

$Rev$, $Date$

Author:

Apache Directory Project

Field Summary

Fields
Modifier and Type Field Description

static UndefinedNode UNDEFINED_NODE
A static instance of this node

Constructor Summary

Constructors
Constructor Description

UndefinedNode(String attribute)
Creates a new instance of UndefinedNode.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`accept(FilterVisitor visitor)`	Element/node accept method for visitor pattern.
`boolean`	`isLeaf()`	Tests to see if this node is a leaf or branch node.
`boolean`	`isSchemaAware()`	Tells if this Node is Schema aware.
`void`	`setAttribute(String attribute)`
`String`	`toString()`

Methods inherited from class org.apache.directory.api.ldap.model.filter.AbstractExprNode
clone, equals, get, getAssertionType, hashCode, printRefinementToBuffer, set

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - UNDEFINED_NODE
```
public static final UndefinedNode UNDEFINED_NODE
```
    A static instance of this node
- Constructor Detail
  - UndefinedNode
```
public UndefinedNode(String attribute)
```
    Creates a new instance of UndefinedNode.
- Method Detail
  - isLeaf
```
public boolean isLeaf()
```
    Tests to see if this node is a leaf or branch node. This implementation always returns false.
    
    Returns:
    
    true if the node is a leaf,false otherwise
  - accept
```
public Object accept(FilterVisitor visitor)
```
    Element/node accept method for visitor pattern. This implementation always returns null.
    
    Parameters:
    
    visitor - the filter expression tree structure visitor
    
    Returns:
    
    the modified element
  - isSchemaAware
```
public boolean isSchemaAware()
```
    Tells if this Node is Schema aware.
    
    Returns:
    
    true if the Node is SchemaAware
  - setAttribute
```
public void setAttribute(String attribute)
```
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class AbstractExprNode
    
    See Also:
    
    Object.toString()