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src/main/java/com/yunhai/acaclassroom/entity/Classroom.java

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+package com.yunhai.acaclassroom.entity;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+
+/**
+ * 教室。campus_id 随楼栋冗余存储（校区调整楼栋时同步），楼栋内教室编号唯一。
+ */
+@Entity
+@Getter
+@Setter
+@Table(name = "aca_classroom")
+public class Classroom extends BaseEntity {
+
+    /** 所属校区 id（冗余自楼栋，列表/统计按校区过滤免联表） */
+    @Column(name = "campus_id", nullable = false)
+    private Integer campusId;
+
+    /** 所属楼栋 id（aca_building.id） */
+    @Column(name = "building_id", nullable = false)
+    private Integer buildingId;
+
+    /** 所在楼层（1..楼栋楼层数量） */
+    @Column(name = "floor", nullable = false)
+    private Integer floor;
+
+    /** 教室名称 */
+    @Column(name = "room_name", nullable = false, length = 100)
+    private String roomName;
+
+    /** 教室编号（楼栋内唯一，默认 楼栋编号+楼层2位+序号2位，如 A0103） */
+    @Column(name = "room_code", nullable = false, length = 32)
+    private String roomCode;
+
+    /** 教室类型 id（aca_classroom_type.id） */
+    @Column(name = "type_id")
+    private Integer typeId;
+
+    /** 教室状态：open 开放 / closed 关闭 */
+    @Column(name = "status", nullable = false, length = 8)
+    private String status;
+
+    /** 教室容纳人数 */
+    @Column(name = "capacity")
+    private Integer capacity;
+
+    /** 座位数 */
+    @Column(name = "seat_count")
+    private Integer seatCount;
+
+    /** 绑定班级 id（aca_class.id，可空=未绑定；同一班级同时只能绑一间教室） */
+    @Column(name = "class_id")
+    private Integer classId;
+
+    /** 所属学校 id（多租户） */
+    @Column(name = "sch_id", nullable = false)
+    private Integer schId;
+}