001 package org.hackystat.telemetry.analyzer.language.ast; 002 003 /** 004 * A constant in telemetry language. 005 * 006 * @author (Cedric) Qin ZHANG 007 * @version $Id$ 008 */ 009 public abstract class Constant implements Expression { 010 011 /** 012 * Gets the value of the constant as a string. 013 * 014 * @return The string representation of the constant value. 015 */ 016 public abstract String getValueString(); 017 }