Package org.apache.commons.jexl3
Class JexlEngine.EmptyContext
- java.lang.Object
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- org.apache.commons.jexl3.JexlEngine.EmptyContext
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- All Implemented Interfaces:
JexlContext
- Enclosing class:
- JexlEngine
public static final class JexlEngine.EmptyContext extends java.lang.Object implements JexlContext
The empty context class, public for instrospection.
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Nested Class Summary
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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
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Constructor Summary
Constructors Constructor Description EmptyContext()
Default ctor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method 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.
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Method Detail
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get
public java.lang.Object get(java.lang.String name)
Description copied from interface:JexlContext
Gets the value of a variable.- Specified by:
get
in interfaceJexlContext
- Parameters:
name
- the variable's name- Returns:
- the value
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has
public boolean has(java.lang.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 interfaceJexlContext
- Parameters:
name
- the variable's name- Returns:
- true if it exists, false otherwise
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set
public void set(java.lang.String name, java.lang.Object value)
Description copied from interface:JexlContext
Sets the value of a variable.- Specified by:
set
in interfaceJexlContext
- Parameters:
name
- the variable's namevalue
- the variable's value
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