level.java

设计模式关于LOG的CLL系统

package cn.edu.nju.software.sd.cll;

public class Level 
{
	int levelVal;
	String levelName;
	
	public static final int TRACE_VAL=10;
	public static final int DEBUG_VAL=20;
	public static final int INFO_VAL=30;
	public static final int WARNING_VAL=40;
	public static final int ERROR_VAL=50;
	public static final int FATAL_VAL=60;
	
	final static public Level FATAL = new Level(FATAL_VAL, "FATAL");
	final static public Level ERROR = new Level(ERROR_VAL, "ERROR");
	final static public Level WARNING = new Level(WARNING_VAL, "WARNING");
	final static public Level INFO = new Level(INFO_VAL, "INFO");
	final static public Level DEBUG = new Level(DEBUG_VAL, "DEBUG");
	final static public Level TRACE = new Level(TRACE_VAL, "TRACE");
	//构造函数
	public Level()
	{
		this.levelVal=DEBUG_VAL;
		this.levelName="DEBUG";
	}
	
	public Level(int levelVal,String levelName)
	{
		this.levelVal=levelVal;
		this.levelName=levelName;
	}
	//可以根据level的字串判断level
	public  static Level toLevel(String sArg) 
	{
    	return (Level) toLevel(sArg, Level.DEBUG);
    }
    //可以根据level的整型值判断level
    public static Level toLevel(int val)
    {
    	return (Level) toLevel(val, Level.DEBUG);
  	}
  	
  	public static Level toLevel(int val, Level defaultLevel) 
  	{
    	switch(val) 
    	{
    		case DEBUG_VAL: return Level.DEBUG;
    		case INFO_VAL: return Level.INFO;
    		case WARNING_VAL: return Level.WARNING;
    		case ERROR_VAL: return Level.ERROR;
    		case FATAL_VAL: return Level.FATAL;
    		case TRACE_VAL: return Level.TRACE;
    		default: return defaultLevel;
    	}
  	}
  	
  	 public static Level toLevel(String sArg, Level defaultLevel) 
  	{                  
    	if(sArg == null)
      	return defaultLevel;
    
    	String s = sArg.toUpperCase();
    	if(s.equals("DEBUG")) return Level.DEBUG; 
    	if(s.equals("INFO"))  return Level.INFO;
    	if(s.equals("WARNING"))  return Level.WARNING;  
   	 	if(s.equals("ERROR")) return Level.ERROR;
   	 	if(s.equals("FATAL")) return Level.FATAL;
    	if(s.equals("TRACE")) return Level.TRACE;
    	return defaultLevel;
  }
}