org.apache.commons.jexl2.scripting

Class JexlScriptEngine.JexlContextWrapper

java.lang.Object

org.apache.commons.jexl2.scripting.JexlScriptEngine.JexlContextWrapper

All Implemented Interfaces:

JexlContext

Enclosing class:

JexlScriptEngine

private final class JexlScriptEngine.JexlContextWrapper
extends java.lang.Object
implements JexlContext

Wrapper to help convert a JSR-223 ScriptContext into a JexlContext. Current implementation only gives access to ENGINE_SCOPE binding.

Field Summary

Fields

Modifier and Type	Field and Description
private javax.script.ScriptContext	scriptContext The wrapped script context.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	JexlContextWrapper(javax.script.ScriptContext theContext) Creates a context wrapper.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	get(java.lang.String name) Gets the value of a variable.
boolean	has(java.lang.String name) Checks whether a variable is defined in this context.
void	set(java.lang.String name, java.lang.Object value) Sets the value of a variable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

scriptContext

private final javax.script.ScriptContext scriptContext

The wrapped script context.

Constructor Detail

JexlContextWrapper

private JexlContextWrapper(javax.script.ScriptContext theContext)

Creates a context wrapper.

Parameters:

theContext - the engine context.

Method Detail

get

public java.lang.Object get(java.lang.String name)

Gets the value of a variable.

Specified by:

get in interface JexlContext

Parameters:

name - the variable's name

Returns:

the value

set

public void set(java.lang.String name,
                java.lang.Object value)

Sets the value of a variable.

Specified by:

set in interface JexlContext

Parameters:

name - the variable's name

value - the variable's value

has

public boolean has(java.lang.String name)

Checks whether a variable is defined in this context.

A variable may be defined with a null value; this method checks whether the value is null or if the variable is undefined.

Specified by:

has in interface JexlContext

Parameters:

name - the variable's name

Returns:

true if it exists, false otherwise