为什么需要档案集中管理？一套可落地的平台搭建方法论与实践框架

// 档案实体类示例
public class Archive
{
    public string Id { get; set; }
    public string Title { get; set; }
    public string Category { get; set; }
    public DateTime CreateDate { get; set; }
    public string ConfidentialLevel { get; set; }
    
    // 档案状态验证方法
    public bool IsAvailable()
    {
        return ConfidentialLevel != "绝密";
    }
}

-- 元数据表结构示例
CREATE TABLE MetadataSchema (
    SchemaID INT PRIMARY KEY,
    FieldName NVARCHAR(100) NOT NULL,
    DataType NVARCHAR(50) NOT NULL,
    IsRequired BIT DEFAULT 0,
    MaxLength INT,
    Description NVARCHAR(500)
);

-- 创建档案元数据表
CREATE TABLE ArchiveMetadata (
    MetadataID INT PRIMARY KEY,
    ArchiveID INT FOREIGN KEY REFERENCES Archives(ArchiveID),
    FieldName NVARCHAR(100) NOT NULL,
    FieldValue NVARCHAR(1000) NOT NULL
);

// 高级搜索功能示例
class AdvancedSearch {
  constructor() {
    this.filters = new Map();
    this.sortField = 'relevance';
    this.sortOrder = 'desc';
  }
  
  // 添加筛选条件
  addFilter(field, value, operator = 'equals') {
    this.filters.set(field, { value, operator });
    return this;
  }
  
  // 执行搜索
  async execute() {
    const query = this.buildQuery();
    const response = await fetch('/api/archives/search', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(query)
    });
    return await response.json();
  }
  
  // 构建查询对象
  buildQuery() {
    return {
      filters: Array.from(this.filters.entries()),
      sort: { field: this.sortField, order: this.sortOrder },
      pagination: { page: 1, size: 20 }
    };
  }
}