ConstantExpression (Apache Commons Jelly Core 1.1-jenkins-20230713 API)

java.lang.Object
- org.apache.commons.jelly.expression.ExpressionSupport
- - org.apache.commons.jelly.expression.ConstantExpression

All Implemented Interfaces:

Expression
```
public class ConstantExpression
extends ExpressionSupport
```
ConstantExpression represents a constant expression.

In other words, evaluate(org.apache.commons.jelly.JellyContext) returns a value independent of the context.

Version:

$Revision: 155420 $

Author:

James Strachan

Field Summary
- Fields inherited from class org.apache.commons.jelly.expression.ExpressionSupport
  EMPTY_ITERATOR
- Fields inherited from interface org.apache.commons.jelly.expression.Expression
  NULL

Constructor Summary

Constructors
Constructor Description

ConstantExpression()
Base constructor

ConstantExpression(Object value)
Convenience constructor sets value property.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`evaluate(JellyContext context)`	Evaluate expression against given context.
`String`	`getExpressionText()`
`Object`	`getValue()`	Gets the constant value of this expression
`void`	`setValue(Object value)`	Sets the constant value of this expression
`String`	`toString()`

Methods inherited from class org.apache.commons.jelly.expression.ExpressionSupport
evaluateAsBoolean, evaluateAsIterator, evaluateAsString, evaluateRecurse

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

- Constructor Detail
  - ConstantExpression
```
public ConstantExpression()
```
    Base constructor
  - ConstantExpression
```
public ConstantExpression(Object value)
```
    Convenience constructor sets value property.
- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - getExpressionText
```
public String getExpressionText()
```
    Returns:
    
    the textual representation of this expression
  - evaluate
```
public Object evaluate(JellyContext context)
```
    Evaluate expression against given context.
    
    Parameters:
    
    context - evaluate expression against this context
    
    Returns:
    
    current value of value property
  - getValue
```
public Object getValue()
```
    Gets the constant value of this expression
  - setValue
```
public void setValue(Object value)
```
    Sets the constant value of this expression