NoVariables

java.lang.Object
- weka.core.expressionlanguage.common.NoVariables

All Implemented Interfaces:

java.io.Serializable, VariableDeclarations
```
public class NoVariables
extends java.lang.Object
implements VariableDeclarations
```
A variable declarations that contains no variables

Version:

$Revision: 1000 $

Author:

Benjamin Weber ( benweber at student dot ethz dot ch )

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

NoVariables()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Node`	`getVariable(java.lang.String name)`	Tries to fetch the variable.
`boolean`	`hasVariable(java.lang.String name)`	Whether the variable is declared.

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

- Constructor Detail
  - NoVariables
```
public NoVariables()
```
- Method Detail
  - hasVariable
```
public boolean hasVariable(java.lang.String name)
```
    Whether the variable is declared. Will always return false
    
    Specified by:
    
    hasVariable in interface VariableDeclarations
    
    Parameters:
    
    name - name of the variable
    
    Returns:
    
    whether the variable is declared. Always false.
  - getVariable
```
public Node getVariable(java.lang.String name)
```
    Tries to fetch the variable. Will always fail.
    The same invariant of VariableDeclarations applies here too.
    
    Specified by:
    
    getVariable in interface VariableDeclarations
    
    Parameters:
    
    name - name of the variable
    
    Returns:
    
    nothing