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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@@ -38,6 +38,7 @@ public sealed class CourseEnrollment : EntityBase
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public CourseEnrollmentStatus Status { get; set; } = CourseEnrollmentStatus.Enrolled;
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public EnrollmentType EnrollmentType { get; set; } = EnrollmentType.Normal;
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public DateTime EnrolledAt { get; set; } = DateTime.UtcNow;
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public DateTime? WaitlistedAt { get; set; }
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public DateTime? WithdrawnAt { get; set; }
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}
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@@ -51,7 +52,10 @@ public enum CourseSelectionRoundStatus
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public enum CourseEnrollmentStatus
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{
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Enrolled = 1,
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Withdrawn = 2
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Withdrawn = 2,
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Waitlisted = 3,
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Cancelled = 4,
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Expired = 5
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}
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public enum EnrollmentType
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