• MongoDB入门(6)- 我们自己封装的MongoDB-C#版本


    Wisdombud.Mongo

    包含内容

     MongoDB.Bson.dll
     MongoDB.Bson.xml
     MongoDB.Driver.dll
     MongoDB.Driver.xml
     Wisdombud.Mongo.dll
     Wisdombud.Mongo.XML
    

    用法示例

    需要注意的地方

    1. dao实例化需要指定一个URL,现在我们用的都是没有密码的,格式:mongodb://localhost/database_name
    2. 每个实体要继承MongoDbEntity,MongoDbEntity有一个属性是ID,这个ID不需要赋值
    using System.Collections.Generic;
    using Wisdombud.Mongo;
    namespace MongoTest
    {
        class Program
        {
            private static MongoDbBaseDao<Person> dao = new MongoDbBaseDao<Person>("mongodb://localhost/database_name");
            static void Main(string[] args)
            {
                SaveDemo();
                UpdateDemo();
            }
            private static void SaveDemo()
            {
                Person p = new Person();
                p.Name = "wisdombud";
                p.Children = new List<string>();
                p.Children.Add("jungong");
                p.Children.Add("mobile");
                dao.Save(p);
            }
            private static void UpdateDemo()
            {
                var person = dao.GetByCondition(a => a.Name == "wisdombud");
                if (person != null)
                {
                    person.Name = "zhaoaaaaa";
                    dao.Save(person);
                }
            }
        }
        public class Person : MongoDbEntity
        {
            public string Name { get; set; }
            public List<string> Children { get; set; }
        }
    }
    

    核心源码

    
            #region Public Methods and Operators
    
            /// <summary>
            ///     Counts the specified condition.
            /// </summary>
            /// <param name="condition">The condition.</param>
            /// <returns></returns>
            public virtual long Count(Expression<Func<T, bool>> condition)
            {
                return this.repository.GetCollection<T>(this.collectioname).AsQueryable().Where(condition).LongCount();
            }
    
            /// <summary>
            ///     Count all elements
            /// </summary>
            /// <returns></returns>
            public virtual long Count()
            {
                return this.repository.GetCollection<T>(this.collectioname).Count();
            }
    
            /// <summary>
            ///     Deletes the specified object.
            /// </summary>
            /// <param name="pobject">The object.</param>
            public virtual void Delete(T pobject)
            {
                this.repository.GetCollection<T>(this.collectioname).Remove(Query.EQ("_id", new ObjectId(pobject.Id)));
            }
    
            /// <summary>
            ///     Deletes the specified object.
            /// </summary>
            /// <param name="condition"></param>
            public virtual void Delete(Expression<Func<T, bool>> condition)
            {
                var todelete = this.GetAll(condition) as List<T>;
                if (todelete == null || todelete.Count <= 0)
                {
                    return;
                }
                foreach (T t in todelete)
                {
                    Delete(t);
                }
            }
    
            public virtual void DeleteAll()
            {
                IEnumerable<T> todelete = this.GetAll();
                foreach (T t in todelete)
                {
                    Delete(t);
                }
            }
    
            /// <summary>
            ///     Gets all.
            /// </summary>
            /// <returns></returns>
            public virtual IEnumerable<T> GetAll()
            {
                return this.Convert2Show(this.repository.GetCollection<T>(this.collectioname).FindAll().ToList());
            }
    
            /// <summary>
            ///     Gets all using a condition.
            /// </summary>
            /// <param name="condition">The condition.</param>
            /// <returns></returns>
            public virtual IEnumerable<T> GetAll(Expression<Func<T, bool>> condition)
            {
                return this.Convert2Show(this.repository.GetCollection<T>(this.collectioname).AsQueryable().Where(condition).ToList());
            }
    
            /// <summary>
            ///     Gets all using a condition, a TOP clause and an optional orderBy clause.
            /// </summary>
            /// <param name="condition">The condition.</param>
            /// <param name="maxresult">The max result.</param>
            /// <param name="orderByDescending">if set to <c>true</c> [order by descending].</param>
            /// <returns></returns>
            public virtual IEnumerable<T> GetAll(
                Expression<Func<T, bool>> condition,
                int maxresult,
                bool orderByDescending)
            {
                IQueryable<T> query = this.repository.GetCollection<T>(this.collectioname).AsQueryable().Where(condition);
    
                return this.Convert2Show(orderByDescending
                           ? query.OrderByDescending(x => x.Id).Take(maxresult).ToList()
                           : query.OrderBy(x => x.Id).Take(maxresult).ToList());
            }
    
            /// <summary>
            ///     Gets the by condition.
            /// </summary>
            /// <param name="condition">The condition.</param>
            /// <returns></returns>
            public virtual T GetByCondition(Expression<Func<T, bool>> condition)
            {
                return this.Convert2Show(this.repository.GetCollection<T>(this.collectioname).AsQueryable().Where(condition).FirstOrDefault());
            }
    
            /// <summary>
            ///     Gets the by MongoId.
            /// </summary>
            /// <param name="MongoId">The _id.</param>
            /// <returns></returns>
            public virtual T GetById(string MongoId)
            {
                return this.Convert2Show(this.repository.GetCollection<T>(this.collectioname).FindOne(Query.EQ("_id", new ObjectId(MongoId))));
            }
    
            public T GetFirst(string field, string search)
            {
                long selectCount;
                IEnumerable<T> selectList = this.Search(field, search, 1, 1, out selectCount);
                return this.Convert2Show(selectList.FirstOrDefault());
            }
    
            /// <summary>
            ///     Paginates by an specified condition.
            /// </summary>
            /// <param name="condition">The condition.</param>
            /// <param name="pagesize">The page size.</param>
            /// <param name="page">The page.</param>
            /// <param name="pOrderByClause">The OrderBy Clause.</param>
            /// <param name="pOrderByDescending">if set to <c>true</c> [order by descending].</param>
            /// <returns></returns>
            public virtual IEnumerable<T> Paginate<TKey>(
                Expression<Func<T, bool>> condition,
                int pagesize,
                int page,
                out long allRecordCount,
                Func<T, TKey> pOrderByClause,
                bool pOrderByDescending)
            {
                IEnumerable<T> query = this.repository.GetCollection<T>(this.collectioname).AsQueryable().Where(condition);
                allRecordCount = query.Count();
                return this.PaginateQuery(pagesize, page, pOrderByClause, pOrderByDescending, query);
            }
    
            /// <summary>
            ///     Paginates by an specified condition.
            /// </summary>
            /// <param name="pagesize">The page size.</param>
            /// <param name="page">The page.</param>
            /// <param name="pOrderByClause">The OrderBy Clause.</param>
            /// <param name="pOrderByDescending">if set to <c>true</c> [order by descending].</param>
            /// <returns></returns>
            public virtual IEnumerable<T> Paginate<TKey>(
                int pagesize,
                int page,
                Func<T, TKey> pOrderByClause,
                bool pOrderByDescending)
            {
                IQueryable<T> query = this.repository.GetCollection<T>(this.collectioname).AsQueryable();
                return this.PaginateQuery(pagesize, page, pOrderByClause, pOrderByDescending, query);
            }
    
            /// <summary>
            ///     Saves the specified object.
            /// </summary>
            /// <param name="pobject">The object.</param>
            /// <returns></returns>
            public virtual T Save(T pobject)
            {
                pobject = this.Convert2Db(pobject);
                this.repository.GetCollection<T>(this.collectioname).Save(pobject);
                return pobject;
            }
    
            /// <summary>
            ///     Search indexes
            /// </summary>
            /// <typeparam name="T"></typeparam>
            /// <param name="field"></param>
            /// <param name="search">The search value</param>
            /// <param name="page"></param>
            /// <param name="pagesize"></param>
            /// <param name="foundedRecords">total number of founded records in index</param>
            /// <returns></returns>
            public IEnumerable<T> Search(string field, string search, int page, int pagesize, out long foundedRecords)
            {
                IMongoQuery query = Query.Matches(field, new BsonRegularExpression(search, "i"));
                List<T> totallist = this.repository.GetCollection<T>(this.collectioname).Find(query).ToList();
                foundedRecords = totallist.Count;
                var list = totallist.Skip(pagesize * (page - 1)).Take(pagesize).ToList();
                return this.Convert2Show(list);
            }
    
            public IEnumerable<T> Search_And(
                IDictionary<string, string> keysAndValues,
                int page,
                int pagesize,
                out long foundedRecords)
            {
                List<IMongoQuery> queries =
                    keysAndValues.Keys.Select(key => Query.Matches(key, new BsonRegularExpression(keysAndValues[key], "i")))
                        .ToList();
                IMongoQuery query = Query.And(queries);
                List<T> totallist = this.repository.GetCollection<T>(this.collectioname).Find(query).ToList();
                foundedRecords = totallist.Count;
                var list = totallist.Skip(pagesize * (page - 1)).Take(pagesize).ToList();
                return this.Convert2Show(list);
            }
    
            public IEnumerable<T> Search_And(IList<IMongoQuery> search, int page, int pagesize, out long foundedRecords)
            {
                IMongoQuery query = Query.And(search);
                List<T> totallist = this.repository.GetCollection<T>(this.collectioname).Find(query).ToList();
                foundedRecords = totallist.Count;
                var list = totallist.Skip(pagesize * (page - 1)).Take(pagesize).ToList();
                return this.Convert2Show(list);
            }
    
            public IEnumerable<T> Search_Or(
                IDictionary<string, string> keysAndValues,
                int page,
                int pagesize,
                out long foundedRecords)
            {
                List<IMongoQuery> queries =
                    keysAndValues.Keys.Select(key => Query.Matches(key, new BsonRegularExpression(keysAndValues[key], "i")))
                        .ToList();
                IMongoQuery query = Query.Or(queries);
                List<T> totallist = this.repository.GetCollection<T>(this.collectioname).Find(query).ToList();
                foundedRecords = totallist.Count;
                var list = totallist.Skip(pagesize * (page - 1)).Take(pagesize).ToList();
                return this.Convert2Show(list);
            }
    
            public IEnumerable<T> Search_Or(IList<IMongoQuery> search, int page, int pagesize, out long foundedRecords)
            {
                IMongoQuery query = Query.Or(search);
                List<T> totallist = this.repository.GetCollection<T>(this.collectioname).Find(query).ToList();
                foundedRecords = totallist.Count;
                var list = totallist.Skip(pagesize * (page - 1)).Take(pagesize).ToList();
                return this.Convert2Show(list);
            }
    
            #endregion
    
    
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  • 原文地址:https://www.cnblogs.com/wardensky/p/5799291.html
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