public static Object getValue(Object exp, Object root) {
        return getValue(exp, root, null, 0);
    }
public static Object getValue ( Object exp , Object root ) { return getValue ( exp , root , null , 0 ) ; }
Returns the value using the OGNL expression and the root object.

@param exp the OGNL expression
@param root the root object

@return the value

@see #getValue(Object, Map, Object, String, int)