Oop 关于如何存储事件周期的建议

好的，假设我正在编写一个日历应用程序，用户可以在其中创建一个事件。在以下情况下可能发生事件：

    1 time only. 
    Every Period of time keep reply, until a day.
    Every Period of time keep reply, until a day, except some days.
    Every some kind of week day.

让我用一个详细的例子来解释：

    1 time only: 24/8/2011 ONLY. 
    Every Period of time keep reply, until a day: 25/8/2011 Start, and every week end will have this event, until 30/10/2011.
    Every Period of time keep reply, until a day, except some days: 25/8/2011 Start, and every week end will have this event, until 30/10/2011, except the 10/09/2011 and 17/09/2011.
    Every some kind of week day, .
    Every some kind of week day, except some days.

---

几年前，马丁·福勒（Martin Fowler）写了一篇关于这个话题的好文章。我不想重复他的分析，我只想让你看看pdf。它叫

好的，那么，你想让我们做什么呢？David Skoll在这个主题上也做了一个很好的介绍，涉及到他伟大的工具“提醒”。