已完成“选课候补与自动递补”完整流程。
学生端:满员后可加入/取消候补,展示候补顺位和当前候补人数。 自动递补:退课释放名额后,按候补时间顺序重新校验学籍、范围、学分及时间冲突;不合格者自动失效并继续下一位。 管理端:教学班显示候补人数,名单抽屉提供候补队列及移出操作。 状态通知:递补成功、资格失效、批次关闭、管理员移出均会通知学生。 并发安全:退课和递补放在 Serializable 事务中执行。 数据库:已补充 SQLite 开发迁移和 MySQL 正式迁移。
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@@ -14,6 +14,10 @@ public static class CourseSelectionRules
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round.Status == CourseSelectionRoundStatus.Open &&
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nowUtc <= round.WithdrawalEndsAt;
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public static bool CanPromoteWaitlist(CourseSelectionRound round, DateTime nowUtc) =>
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round.Status == CourseSelectionRoundStatus.Open &&
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nowUtc <= round.WithdrawalEndsAt;
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public static bool SupportsProxyEnrollment(CourseNature nature) =>
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nature == CourseNature.GeneralRequired;
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@@ -68,4 +72,7 @@ public static class CourseSelectionRules
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/// <summary>Retake expanded capacity: ceiling(original * 1.15).</summary>
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public static int RetakeCapacity(int originalCapacity) =>
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(int)Math.Ceiling(originalCapacity * 1.15);
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public static int EffectiveCapacity(int originalCapacity, bool isRetake) =>
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isRetake ? RetakeCapacity(originalCapacity) : originalCapacity;
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}
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