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src/main/java/com/ai/da/mapper/primary/ContestantMapper.java

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+package com.ai.da.mapper.primary;
+
+import com.ai.da.mapper.primary.entity.Contestant;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface ContestantMapper extends BaseMapper<Contestant> {
+
+}
+
+

src/main/java/com/ai/da/mapper/primary/entity/Contestant.java

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+package com.ai.da.mapper.primary.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+/**
+ * submissions 表对应实体 — 参赛选手信息 (Contestant)
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+@TableName("submissions")
+public class Contestant {
+
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+
+    private String email;
+
+    @TableField("first_name")
+    private String firstName;
+
+    @TableField("last_name")
+    private String lastName;
+
+    private String gender;
+
+    private String occupation;
+
+    private Integer age;
+
+    @TableField("country_region_city")
+    private String countryRegionCity;
+
+    @TableField("phone_number")
+    private String phoneNumber;
+
+    @TableField("portfolio_url")
+    private String portfolioUrl;
+
+    @TableField("design_title")
+    private String designTitle;
+
+    @TableField("design_description")
+    private String designDescription;
+
+    @TableField("pdf_path")
+    private String pdfPath;
+
+    @TableField("video_path")
+    private String videoPath;
+
+    @TableField("created_at")
+    private LocalDateTime createdAt;
+
+    @TableField("updated_at")
+    private LocalDateTime updatedAt;
+
+    @TableField("created_by")
+    private Long createdBy;
+}
+
+