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src/Jiaowu.Api/Domain/Academic/OrganizationEntities.cs

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+using Jiaowu.Api.Domain.Common;
+
+namespace Jiaowu.Api.Domain.Academic;
+
+public sealed class Campus : CatalogEntity
+{
+    public string? Address { get; set; }
+}
+
+public sealed class College : CatalogEntity
+{
+    public Guid? CampusId { get; set; }
+    public Campus? Campus { get; set; }
+    public string? ShortName { get; set; }
+}
+
+public sealed class Major : CatalogEntity
+{
+    public Guid CollegeId { get; set; }
+    public College? College { get; set; }
+    public required string DegreeType { get; set; }
+    public int SchoolingYears { get; set; } = 4;
+}
+
+public sealed class AdministrativeClass : CatalogEntity
+{
+    public Guid MajorId { get; set; }
+    public Major? Major { get; set; }
+    public int Grade { get; set; }
+    public string? CounselorName { get; set; }
+}
+
+public sealed class Building : CatalogEntity
+{
+    public Guid CampusId { get; set; }
+    public Campus? Campus { get; set; }
+}
+
+public sealed class Classroom : CatalogEntity
+{
+    public Guid BuildingId { get; set; }
+    public Building? Building { get; set; }
+    public int Capacity { get; set; }
+    public string RoomType { get; set; } = "普通教室";
+    public string? Equipment { get; set; }
+}
+
+public sealed class AcademicTerm : CatalogEntity
+{
+    public required string AcademicYear { get; set; }
+    public TermSeason Season { get; set; }
+    public DateOnly StartDate { get; set; }
+    public DateOnly EndDate { get; set; }
+    public bool IsCurrent { get; set; }
+}
+
+public enum TermSeason
+{
+    Autumn = 1,
+    Spring = 2,
+    Summer = 3
+}