mongoDB操作命令及mongoDB的helper

此项目已开源，开源地址是：

http://mongodbhelper-csharp.googlecode.com/svn/trunk/

mongodb的helper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MongoDB.Driver;
using MongoDB.Bson;
using MongoDB.Driver.Builders;
namespace MongoDBHelper
{
    /// <summary>
    /// mongodb的封装类。
    /// add by yancong2008@gmail.com 2011.05.14
    /// </summary>
    public sealed class MongoDBHelper
    //public sealed class MongoDBHelper<T>
    //where T :class
    {
        public static readonly string connectionString_Default = System.Configuration.ConfigurationManager.AppSettings["ConnectionString_mongoDB"];
        public static readonly string database_Default = System.Configuration.ConfigurationManager.AppSettings["Database_mongoDB"];
        #region 新增
        public static SafeModeResult InsertOne<T>(string collectionName, T entity)
        {
            return MongoDBHelper.InsertOne<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, entity);
        }
        public static SafeModeResult InsertOne<T>(string connectionString, string databaseName, string collectionName, T entity)
        {
            SafeModeResult result = new SafeModeResult();
            if (null == entity)
            {
                return null;
            }
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                result = myCollection.Insert(entity);
            }
            return result;
        }
        public static IEnumerable<SafeModeResult> InsertAll<T>(string collectionName, IEnumerable<T> entitys)
        {
            return MongoDBHelper.InsertAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, entitys);
        }
        public static IEnumerable<SafeModeResult> InsertAll<T>(string connectionString, string databaseName, string collectionName, IEnumerable<T> entitys)
        {
            IEnumerable<SafeModeResult> result = null;
            if (null == entitys)
            {
                return null;
            }
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                result = myCollection.InsertBatch(entitys);
            }
            return result;
        }
        #endregion
        #region 修改
        public static SafeModeResult UpdateOne<T>(string collectionName, T entity)
        {
            return MongoDBHelper.UpdateOne<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, entity);
        }
        public static SafeModeResult UpdateOne<T>(string connectionString, string databaseName, string collectionName, T entity)
        {
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            SafeModeResult result;
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                result = myCollection.Save(entity);
            }
            return result;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="update">更新设置。调用示例：Update.Set("Title", "yanc") 或者 Update.Set("Title", "yanc").Set("Author", "yanc2") 等等</param>
        /// <returns></returns>
        public static SafeModeResult UpdateAll<T>(string collectionName, IMongoQuery query, IMongoUpdate update)
        {
            return MongoDBHelper.UpdateAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query, update);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="connectionString"></param>
        /// <param name="databaseName"></param>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="update">更新设置。调用示例：Update.Set("Title", "yanc") 或者 Update.Set("Title", "yanc").Set("Author", "yanc2") 等等</param>
        /// <returns></returns>
        public static SafeModeResult UpdateAll<T>(string connectionString, string databaseName, string collectionName, IMongoQuery query, IMongoUpdate update)
        {
            SafeModeResult result;
            if (null == query || null == update)
            {
                return null;
            }
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                result = myCollection.Update(query, update, UpdateFlags.Multi);
            }
            return result;
        }
        #endregion
        #region 删除
        public static SafeModeResult Delete(string collectionName, string _id)
        {
            return MongoDBHelper.Delete(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, _id);
        }
        public static SafeModeResult Delete(string connectionString, string databaseName, string collectionName, string _id)
        {
            SafeModeResult result;
            ObjectId id;
            if (!ObjectId.TryParse(_id, out id))
            {
                return null;
            }
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                result = myCollection.Remove(Query.EQ("_id", id));
            }
            return result;
        }
        public static SafeModeResult DeleteAll(string collectionName)
        {
            return MongoDBHelper.DeleteAll(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, null);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <returns></returns>
        public static SafeModeResult DeleteAll(string collectionName, IMongoQuery query)
        {
            return MongoDBHelper.DeleteAll(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="connectionString"></param>
        /// <param name="databaseName"></param>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <returns></returns>
        public static SafeModeResult DeleteAll(string connectionString, string databaseName, string collectionName, IMongoQuery query)
        {
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            SafeModeResult result;
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                if (null == query)
                {
                    result = myCollection.RemoveAll();
                }
                else
                {
                    result = myCollection.Remove(query);
                }
            }
            return result;
        }
        #endregion
        #region 获取单条信息
        public static T GetOne<T>(string collectionName, string _id)
        {
            return MongoDBHelper.GetOne<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, _id);
        }
        public static T GetOne<T>(string connectionString, string databaseName, string collectionName, string _id)
        {
            T result = default(T);
            ObjectId id;
            if (!ObjectId.TryParse(_id, out id))
            {
                return default(T);
            }
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                result = myCollection.FindOneAs<T>(Query.EQ("_id", id));
            }
            return result;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <returns></returns>
        public static T GetOne<T>(string collectionName, IMongoQuery query)
        {
            return GetOne<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="connectionString"></param>
        /// <param name="databaseName"></param>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <returns></returns>
        public static T GetOne<T>(string connectionString, string databaseName, string collectionName, IMongoQuery query)
        {
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            T result = default(T);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                if (null == query)
                {
                    result = myCollection.FindOneAs<T>();
                }
                else
                {
                    result = myCollection.FindOneAs<T>(query);
                }
            }
            return result;
        }
        #endregion
        #region 获取多个
        public static List<T> GetAll<T>(string collectionName)
        {
            return MongoDBHelper.GetAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName);
        }
        /// <summary>
        /// 如果不清楚具体的数量，一般不要用这个函数。
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string connectionString, string databaseName, string collectionName)
        {
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            List<T> result = new List<T>();
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                foreach (T entity in myCollection.FindAllAs<T>())
                {
                    result.Add(entity);
                }
            }
            return result;
        }
        public static List<T> GetAll<T>(string collectionName, int count)
        {
            return MongoDBHelper.GetAll<T>(collectionName, count, null, null);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="count"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, int count, IMongoQuery query)
        {
            return MongoDBHelper.GetAll<T>(collectionName, count, query, null);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="count"></param>
        /// <param name="sortBy">排序用的。调用示例：SortBy.Descending("Title") 或者 SortBy.Descending("Title").Ascending("Author")等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, int count, IMongoSortBy sortBy)
        {
            return MongoDBHelper.GetAll<T>(collectionName, count, null, sortBy);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="count"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="sortBy">排序用的。调用示例：SortBy.Descending("Title") 或者 SortBy.Descending("Title").Ascending("Author")等等</param>
        /// <param name="fields">只返回所需要的字段的数据。调用示例："Title" 或者 new string[] { "Title", "Author" }等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, int count, IMongoQuery query, IMongoSortBy sortBy, params string[] fields)
        {
            PagerInfo pagerInfo = new PagerInfo();
            pagerInfo.Page = 1;
            pagerInfo.PageSize = count;
            return MongoDBHelper.GetAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query, pagerInfo, sortBy, fields);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="pagerInfo"></param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, IMongoQuery query, PagerInfo pagerInfo)
        {
            return MongoDBHelper.GetAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query, pagerInfo, null);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="pagerInfo"></param>
        /// <param name="sortBy">排序用的。调用示例：SortBy.Descending("Title") 或者 SortBy.Descending("Title").Ascending("Author")等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, IMongoQuery query, PagerInfo pagerInfo, IMongoSortBy sortBy)
        {
            return MongoDBHelper.GetAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query, pagerInfo, sortBy);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="pagerInfo"></param>
        /// <param name="fields">只返回所需要的字段的数据。调用示例："Title" 或者 new string[] { "Title", "Author" }等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, IMongoQuery query, PagerInfo pagerInfo, params string[] fields)
        {
            return MongoDBHelper.GetAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query, pagerInfo, null, fields);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="pagerInfo"></param>
        /// <param name="sortBy">排序用的。调用示例：SortBy.Descending("Title") 或者 SortBy.Descending("Title").Ascending("Author")等等</param>
        /// <param name="fields">只返回所需要的字段的数据。调用示例："Title" 或者 new string[] { "Title", "Author" }等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string collectionName, IMongoQuery query, PagerInfo pagerInfo, IMongoSortBy sortBy, params string[] fields)
        {
            return MongoDBHelper.GetAll<T>(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, query, pagerInfo, sortBy, fields);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="connectionString"></param>
        /// <param name="databaseName"></param>
        /// <param name="collectionName"></param>
        /// <param name="query">条件查询。 调用示例：Query.Matches("Title", "感冒") 或者 Query.EQ("Title", "感冒") 或者Query.And(Query.Matches("Title", "感冒"),Query.EQ("Author", "yanc")) 等等</param>
        /// <param name="pagerInfo"></param>
        /// <param name="sortBy">排序用的。调用示例：SortBy.Descending("Title") 或者 SortBy.Descending("Title").Ascending("Author")等等</param>
        /// <param name="fields">只返回所需要的字段的数据。调用示例："Title" 或者 new string[] { "Title", "Author" }等等</param>
        /// <returns></returns>
        public static List<T> GetAll<T>(string connectionString, string databaseName, string collectionName, IMongoQuery query, PagerInfo pagerInfo, IMongoSortBy sortBy, params string[] fields)
        {
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            List<T> result = new List<T>();
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                MongoCursor<T> myCursor;
                if (null == query)
                {
                    myCursor = myCollection.FindAllAs<T>();
                }
                else
                {
                    myCursor = myCollection.FindAs<T>(query);
                }
                if (null != sortBy)
                {
                    myCursor.SetSortOrder(sortBy);
                }
                if (null != fields)
                {
                    myCursor.SetFields(fields);
                }
                foreach (T entity in myCursor.SetSkip((pagerInfo.Page - 1) * pagerInfo.PageSize).SetLimit(pagerInfo.PageSize))//.SetSkip(100).SetLimit(10)是指读取第一百条后的10条数据。
                {
                    result.Add(entity);
                }
            }
            return result;
        }
        #endregion
        #region 索引
        public static void CreateIndex(string collectionName, params string[] keyNames)
        {
            MongoDBHelper.CreateIndex(MongoDBHelper.connectionString_Default, MongoDBHelper.database_Default, collectionName, keyNames);
        }
        public static void CreateIndex(string connectionString, string databaseName, string collectionName, params string[] keyNames)
        {
            SafeModeResult result = new SafeModeResult();
            if (null == keyNames)
            {
                return;
            }
            MongoServer server = MongoServer.Create(connectionString);
            //获取数据库或者创建数据库（不存在的话）。
            MongoDatabase database = server.GetDatabase(databaseName);
            using (server.RequestStart(database))//开始连接数据库。
            {
                MongoCollection<BsonDocument> myCollection = database.GetCollection<BsonDocument>(collectionName);
                if (!myCollection.IndexExists(keyNames))
                {
                    myCollection.EnsureIndex(keyNames);
                }
            }
        }
        #endregion
    }
}

mongoDB操作命令，摘自官方helper

help                         show help
show dbs                     show database names
show collections             show collections in current database
show users                   show users in current database
show profile                 show most recent system.profile entries with time >= 1ms
use <db name>                set curent database to <db name>

db.addUser (username, password)
db.removeUser(username)

db.cloneDatabase(fromhost)
db.copyDatabase(fromdb, todb, fromhost)
db.createCollection(name, { size : ..., capped : ..., max : ... } )

db.getName()
db.dropDatabase()

// runs the collstats] command on each collection in the database
db.printCollectionStats()

db.currentOp() displays the current operation in the db
db.killOp() kills the current operation in the db

db.getProfilingLevel()
db.setProfilingLevel(level) 0=off 1=slow 2=all

db.getReplicationInfo()
db.printReplicationInfo()
db.printSlaveReplicationInfo()
db.repairDatabase()

db.version() current version of the server

db.shutdownServer()

db.foo.drop() drop the collection
db.foo.dropIndex(name)
db.foo.dropIndexes()
db.foo.getIndexes()
db.foo.ensureIndex(keypattern,options) - options object has these possible
fields: name, unique, dropDups

db.foo.find( [query] , [fields]) - first parameter is an optional
query filter. second parameter
is optional
set of fields to return.
e.g. db.foo.find(
{ x : 77 } ,
{ name : 1 , x : 1 } )
db.foo.find(...).count()
db.foo.find(...).limit(n)
db.foo.find(...).skip(n)
db.foo.find(...).sort(...)
db.foo.findOne([query])

db.foo.getDB() get DB object associated with collection

db.foo.count()
db.foo.group( { key : ..., initial: ..., reduce : ...[, cond: ...] } )

db.foo.renameCollection( newName ) renames the collection

db.foo.stats()
db.foo.dataSize()
db.foo.storageSize() - includes free space allocated to this collection
db.foo.totalIndexSize() - size in bytes of all the indexes
db.foo.totalSize() - storage allocated for all data and indexes
db.foo.validate() (slow)

db.foo.insert(obj)
db.foo.update(query, object[, upsert_bool])
db.foo.save(obj)
db.foo.remove(query) - remove objects matching query
remove({}) will remove all