org.apache.commons.jexl2

public Interface JexlContext

Known Direct Implementers: org.apache.commons.jexl2.MapContext, org.apache.commons.jexl2.ObjectContext, org.apache.commons.jexl2.ReadonlyContext, org.apache.commons.jexl2.UnifiedJEXL.TemplateContext, org.apache.commons.jexl2.scripting.JexlScriptEngine.JexlContextWrapper

Manages variables which can be referenced in a JEXL expression.

Note that JEXL may use '$jexl' and '$ujexl' variables for internal purpose; setting or getting those variables may lead to unexpected results unless specified otherwise.

Since: 1.0
Version: $Id: JexlContext.java 1202769 2011-11-16 16:33:02Z henrib $

Method Summary

Modifier and Type	Method and Description
public Object	Returns: the value get(String the variable's name name) Gets the value of a variable.
public boolean	Returns: true if it exists, false otherwise has(String the variable's name name) Checks whether a variable is defined in this context.
public void	set(String the variable's name name, Object the variable's value value) Sets the value of a variable.

Method Detail

get	back to summary
public Object get(String name) Gets the value of a variable. Parameters name:String the variable's name Returns:Object the value

get

back to summary

public Object get(String name)

Gets the value of a variable.

Parameters

name:String: the variable's name

Returns:Object

the value

has	back to summary
public boolean has(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. Parameters name:String the variable's name Returns:boolean true if it exists, false otherwise

has

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public boolean has(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.

Parameters

name:String: the variable's name

Returns:boolean

true if it exists, false otherwise

set	back to summary
public void set(String name, Object value) Sets the value of a variable. Parameters name:String the variable's name value:Object the variable's value

set

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public void set(String name, Object value)

Sets the value of a variable.

Parameters

name:String: the variable's name
value:Object: the variable's value