net.sf.jett.expression
Class ClassAwareMapContext

java.lang.Object
  org.apache.commons.jexl2.MapContext
      net.sf.jett.expression.ClassAwareMapContext

All Implemented Interfaces:

org.apache.commons.jexl2.JexlContext

public class ClassAwareMapContext
extends org.apache.commons.jexl2.MapContext

A ClassAwareMapContext is a JEXL MapContext that can resolve class names using Class.forName for the purposes of allowing access to built-in Java methods, especially static methods such as java.lang.String.format.

Since:

0.4.0

Author:

Randy Gettman

Field Summary

Fields inherited from class org.apache.commons.jexl2.MapContext

map

Constructor Summary

ClassAwareMapContext()
Constructs a ClassAwareMapContext that uses an automatically allocated, empty Map.

ClassAwareMapContext(java.util.Map<java.lang.String,java.lang.Object> beans)
Constructs a ClassAwareMapContext that wraps the existing Map of bean names to bean values.

Method Summary

java.lang.Object	get(java.lang.String name) Retrieves the variable value, or the Class object, by name as defined in this context.
boolean	has(java.lang.String name) Checks whether the name is a variable defined in this context, or if it is a valid Java class name as determined by Class.forName.

Methods inherited from class org.apache.commons.jexl2.MapContext

set

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassAwareMapContext

public ClassAwareMapContext()

Constructs a ClassAwareMapContext that uses an automatically allocated, empty Map.

ClassAwareMapContext

public ClassAwareMapContext(java.util.Map<java.lang.String,java.lang.Object> beans)

Constructs a ClassAwareMapContext that wraps the existing Map of bean names to bean values.

Parameters:

beans - A Map of bean names to bean values.

Method Detail

has

public boolean has(java.lang.String name)

Checks whether the name is a variable defined in this context, or if it is a valid Java class name as determined by Class.forName.

Specified by:

has in interface org.apache.commons.jexl2.JexlContext

Overrides:

has in class org.apache.commons.jexl2.MapContext

Parameters:

name - The variable's or class's name.

Returns:

true if the name exists, otherwise false.

get

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

Retrieves the variable value, or the Class object, by name as defined in this context.

Specified by:

get in interface org.apache.commons.jexl2.JexlContext

Overrides:

get in class org.apache.commons.jexl2.MapContext

Parameters:

name - The variable's name or class's name.

Returns:

The variable value or Class object.