MongoDB学习笔记~大叔框架实体更新支持N层嵌套~递归递归我爱你！
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了MongoDB学习笔记~大叔框架实体更新支持N层嵌套~递归递归我爱你！，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含12823字，纯文字阅读大概需要19分钟。
内容图文
一 从超级变态的类开始
public class Person : Base { public Person() { Contact = new Test.Contact(); OrderList = new List<Order>(); } public string Name { get; set; } public DateTime LastContact { get; set; } public DateTime Birthday { get; set; } public int Age { get; set; } #region 值对象 /// <summary> /// 统计 /// </summary> public Total Total { get; set; } /// <summary> /// 联系方式和地址 /// </summary> public Contact Contact { get; set; } #endregion #region 列表实体 public List<Order> OrderList { get; set; } #endregion } public class Section { public string SectionID { get; set; } public string SectionName { get; set; } } public class Area { public Area() { Section = new Section(); } public string Province { get; set; } public string City { get; set; } public string District { get; set; } public Section Section { get; set; } } public class Contact { public Contact() { Area = new Area(); } public string PostCode { get; set; } public string Email { get; set; } public string Phone { get; set; } public Area Area { get; set; } } public class Total { public int Count { get; set; } public int Max { get; set; } } public class Order { public Order() { Id = MongoDB.Bson.ObjectId.GenerateNewId().ToString(); this.OrderDetail = new List<OrderDetail>(); this.User_Info = new User_Info(); } public string UserId { get; set; } public string UserName { get; set; } public string Id { get; set; } public double Price { get; set; } public DateTime AddTime { get; set; } public User_Info User_Info { get; set; } public List<OrderDetail> OrderDetail { get; set; } } public class User_Info { public User_Info() { Id = MongoDB.Bson.ObjectId.GenerateNewId().ToString(); } public string Id { get; set; } public string Name { get; set; } } public class OrderDetail { public OrderDetail() { Id = MongoDB.Bson.ObjectId.GenerateNewId().ToString(); } public string Id { get; set; } public string OrderId { get; set; } public string ProductName { get; set; } public int Count { get; set; } public double Price { get; set; } public string SellerId { get; set; } }
看到上面的类，绝对够你喝一壶的，呵呵，这是一个复杂的类型People,它有实体属性contact和列表属性OrderList
而对于之前大叔的框架里，这种结构是不被支持的，大叔只能支持到3级嵌套，但这显然是不够的，最后大叔硬着头皮冲了上来，把这个骨头啃掉了，哈哈！
下面贡献我的Recursion代码
/// <summary> /// 递归构建Update操作串 /// </summary> /// <param name="fieldList"></param> /// <param name="property"></param> /// <param name="propertyValue"></param> /// <param name="item"></param> /// <param name="father"></param> private void GenerateRecursion( List<UpdateDefinition<TEntity>> fieldList, PropertyInfo property, object propertyValue, TEntity item, string father) { //复杂类型 if (property.PropertyType.IsClass && property.PropertyType != typeof(string) && propertyValue != null) { //集合 if (typeof(IList).IsAssignableFrom(propertyValue.GetType())) { foreach (var sub in property.PropertyType.GetProperties(BindingFlags.Instance | BindingFlags.Public)) { if (sub.PropertyType.IsClass && sub.PropertyType != typeof(string)) { var arr = propertyValue as IList; if (arr != null && arr.Count > 0) { for (int index = 0; index < arr.Count; index++) { foreach (var subInner in sub.PropertyType.GetProperties(BindingFlags.Instance | BindingFlags.Public)) { if (string.IsNullOrWhiteSpace(father)) GenerateRecursion(fieldList, subInner, subInner.GetValue(arr[index]), item, property.Name + "." + index); else GenerateRecursion(fieldList, subInner, subInner.GetValue(arr[index]), item, father + "." + property.Name + "." + index); } } } } } } //实体 else { foreach (var sub in property.PropertyType.GetProperties(BindingFlags.Instance | BindingFlags.Public)) { if (string.IsNullOrWhiteSpace(father)) GenerateRecursion(fieldList, sub, sub.GetValue(propertyValue), item, property.Name); else GenerateRecursion(fieldList, sub, sub.GetValue(propertyValue), item, father + "." + property.Name); } } } //简单类型 else { if (property.Name != EntityKey)//更新集中不能有实体键_id { if (string.IsNullOrWhiteSpace(father)) fieldList.Add(Builders<TEntity>.Update.Set(property.Name, propertyValue)); else fieldList.Add(Builders<TEntity>.Update.Set(father + "." + property.Name, propertyValue)); } } } /// <summary> /// 构建Mongo的更新表达式 /// </summary> /// <param name="entity"></param> /// <returns></returns> private List<UpdateDefinition<TEntity>> GeneratorMongoUpdate(TEntity item) { var fieldList = new List<UpdateDefinition<TEntity>>(); foreach (var property in typeof(TEntity).GetProperties(BindingFlags.Instance | BindingFlags.Public)) { GenerateRecursion(fieldList, property, property.GetValue(item), item, string.Empty); } return fieldList; }
最后的结果，当然是在N层失败之后，取得了成功，呵呵！
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 本文系统来源：http://www.cnblogs.com/lori/p/4553185.html
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