code: public int compareTo(Object o)
  	{
  		if (o instanceof ChartLongValue)
  		{
  			return ((ChartLongValue)o).value.compareTo(value);
  		}
  		else if (o instanceof String)
  		{
  			return ((String)o).compareTo(value);
  		}
  
  		return 1;
  	}
docs: {@inheritDoc}