MapContext (Apache Commons JEXL 3.0.1-SNAPSHOT API)

java.lang.Object
- org.apache.commons.jexl3.MapContext

All Implemented Interfaces:

JexlContext
```
public class MapContext
extends Object
implements JexlContext
```
Wraps a map in a context.
Each entry in the map is considered a variable name, value pair.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.commons.jexl3.JexlContext
  JexlContext.AnnotationProcessor, JexlContext.NamespaceFunctor, JexlContext.NamespaceResolver, JexlContext.ThreadLocal

Constructor Summary

Constructors
Constructor and Description
`MapContext()` Creates a MapContext on an automatically allocated underlying HashMap.
`MapContext(Map<String,Object> vars)` Creates a MapContext wrapping an existing user provided map.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clear()` Clears all variables.
`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

- Constructor Detail
  - MapContext
```
public MapContext()
```
    Creates a MapContext on an automatically allocated underlying HashMap.
  - MapContext
```
public MapContext(Map<String,Object> vars)
```
    Creates a MapContext wrapping an existing user provided map.
    
    Parameters:
    vars - the variable map
- Method Detail
  - 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
  - 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
  - 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
  - clear
```
public void clear()
```
    Clears all variables.

Class MapContext

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

MapContext

MapContext

Method Detail

has

get

set

clear