UnknownExpression (Blueriq SDK Modules 13.13.58.6656 API)

java.lang.Object
- com.aquima.interactions.expressions.optimizer.nodes.UnknownExpression

All Implemented Interfaces:

IExpressionNode, Serializable
```
public class UnknownExpression
extends Object
implements IExpressionNode
```
This expression is used for unknown nodes (?) and nodes that failed (ErrorNode).

Since:

6.0

Author:

O. Kerpershoek

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

UnknownExpression()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IValue`	`evaluate(IValueEnvironment environment)`	This method evaluates the node using the environment passed as argument and returns the result as a value or null if the result is unknown.
`String`	`toString()`

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

- Constructor Detail
  - UnknownExpression
```
public UnknownExpression()
```
- Method Detail
  - evaluate
```
public IValue evaluate(IValueEnvironment environment)
```
    Description copied from interface: IExpressionNode
    
    This method evaluates the node using the environment passed as argument and returns the result as a value or null if the result is unknown.
    
    Specified by:
    
    evaluate in interface IExpressionNode
    
    Parameters:
    
    environment - The environment that should be used when evaluating the node.
    
    Returns:
    
    The result of the evaluation, or null if the result is unknown.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object