# File lib/dbi/dbi.rb, line 303
  def initialize(year=0, month=0, day=0, hour=0, minute=0, second=0, fraction=nil)
    case year
    when ::Time
      @year, @month, @day = year.year, year.month, year.day 
      @hour, @minute, @second, @fraction = year.hour, year.min, year.sec, nil 
      @original_time = year
    when ::Date
      @year, @month, @day = year.year, year.month, year.day 
      @hour, @minute, @second, @fraction = 0, 0, 0, nil 
      @original_date = year
    else
      @year, @month, @day = year, month, day
      @hour, @minute, @second, @fraction = hour, minute, second, fraction
    end
  end