Package org.apache.commons.jexl3

Class JexlEngine.EmptyContext

java.lang.Object

org.apache.commons.jexl3.JexlEngine.EmptyContext

All Implemented Interfaces:

JexlContext

Enclosing class:

JexlEngine

public static final class JexlEngine.EmptyContext
extends Object
implements JexlContext

The empty context class, public for instrospection.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.commons.jexl3.JexlContext

JexlContext.AnnotationProcessor, JexlContext.CancellationHandle, JexlContext.ClassNameResolver, JexlContext.ModuleProcessor, JexlContext.NamespaceFunctor, JexlContext.NamespaceResolver, JexlContext.OptionsHandle, JexlContext.PragmaProcessor, JexlContext.ThreadLocal

Method Summary

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

Method Details

get

public Object get(String name)

Description copied from interface: JexlContext

Gets the value of a variable.

Specified by:

get in interface JexlContext

Parameters:

name - the variable's name

Returns:

the value

has

public boolean has(String name)

Description copied from interface: JexlContext

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

set

public void set(String name,
 Object value)

Description copied from interface: JexlContext

Sets the value of a variable.

Specified by:

set in interface JexlContext

Parameters:

name - the variable's name

value - the variable's value