作為系列的最后一篇,得要說說C#驅(qū)動(dòng)對mongodb的操作,目前驅(qū)動(dòng)有兩種:官方驅(qū)動(dòng)和samus驅(qū)動(dòng),不過我個(gè)人還是喜歡后者,
因?yàn)樘峁┝素S富的linq操作,相當(dāng)方便。
官方驅(qū)動(dòng):https://github.com/mongodb/mongo-csharp-driver/downloads。下載后,還提供了一個(gè)酷似msdn的幫助文檔。
samus驅(qū)動(dòng):https://github.com/samus/mongodb-csharp/downloads。
下面就具體看看samus驅(qū)動(dòng),https://github.com/samus/mongodb-csharp/blob/master/examples/Simple/Main.cs上面提供了
一個(gè)簡單的demo,大體上看看我們就知道怎么玩了。
一: 實(shí)踐
1:我們建立一個(gè)Person實(shí)體,MongoAlias特性表示取別名,這里的ID值將會(huì)覆蓋掉數(shù)據(jù)庫自動(dòng)生成的_id。
復(fù)制代碼 代碼如下:
#region 數(shù)據(jù)實(shí)體
/// summary>
/// 數(shù)據(jù)實(shí)體
/// /summary>
public class Person
{
[MongoAlias("_id")]
public string ID { get; set; }
public string Name { get; set; }
public int Age { get; set; }
public DateTime CreateTime { get; set; }
}
#endregion
2:初始化一些變量
復(fù)制代碼 代碼如下:
string connectionString = string.Empty;
string databaseName = string.Empty;
string collectionName = string.Empty;
static MongodbHelperT> mongodb;
#region 初始化操作
/// summary>
/// 初始化操作
/// /summary>
public MongodbHelper()
{
connectionString = "Server=127.0.0.1:2222";
databaseName = "shopex";
collectionName = "person";
}
#endregion
3:為了方便T的繼承類使用linq功能,我們還需要映射一下。
復(fù)制代碼 代碼如下:
#region 實(shí)現(xiàn)linq查詢的映射配置
/// summary>
/// 實(shí)現(xiàn)linq查詢的映射配置
/// /summary>
public MongoConfiguration configuration
{
get
{
var config = new MongoConfigurationBuilder();
config.Mapping(mapping =>
{
mapping.DefaultProfile(profile =>
{
profile.SubClassesAre(t => t.IsSubclassOf(typeof(T)));
});
mapping.MapT>();
mapping.MapT>();
});
config.ConnectionString(connectionString);
return config.BuildConfiguration();
}
}
#endregion
4:下面是一些基本的CURD的代碼,跟寫EF代碼很類似,寫起來好舒服。
復(fù)制代碼 代碼如下:
#region 插入操作
/// summary>
/// 插入操作
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public void Insert(T t)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
collection.Insert(t, true);
mongo.Disconnect();
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 更新操作
/// summary>
/// 更新操作
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public void Update(T t, ExpressionFuncT, bool>> func)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
collection.UpdateT>(t, func, true);
mongo.Disconnect();
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 獲取集合
/// summary>
///獲取集合
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public ListT> List(int pageIndex, int pageSize, ExpressionFuncT, bool>> func, out int pageCount)
{
pageCount = 0;
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
pageCount = Convert.ToInt32(collection.Count());
var personList = collection.Linq().Where(func).Skip(pageSize * (pageIndex - 1))
.Take(pageSize).Select(i => i).ToList();
mongo.Disconnect();
return personList;
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 讀取單條記錄
/// summary>
///讀取單條記錄
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public T Single(ExpressionFuncT, bool>> func)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
var single = collection.Linq().FirstOrDefault(func);
mongo.Disconnect();
return single;
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 刪除操作
/// summary>
/// 刪除操作
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public void Delete(ExpressionFuncT, bool>> func)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
//這個(gè)地方要注意,一定要加上T參數(shù),否則會(huì)當(dāng)作object類型處理
//導(dǎo)致刪除失敗
collection.RemoveT>(func);
mongo.Disconnect();
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
5. 好,我們開一下2222端口,由于前前篇我已經(jīng)把這個(gè)mongodb做成了服務(wù),現(xiàn)在就直接連過去了,并做一下對Name的索引。
6. 一切準(zhǔn)備妥當(dāng),我們做下基本的操作,比如這里我添加一千條數(shù)據(jù),注意我開啟的是安全模式,如果插入不成功,將會(huì)拋出異常。
1> Add:
復(fù)制代碼 代碼如下:
static void Main(string[] args)
{
MongodbHelperPerson> helper = new MongodbHelperPerson>();
//插入1000條數(shù)據(jù)
for (int i = 0; i 1000; i++)
{
helper.Insert(new Person()
{
ID = Guid.NewGuid().ToString(),
Name = "jack" + i,
Age = i,
CreateTime = DateTime.Now
});
}
Console.WriteLine("插入成功");
Console.Read();
}
乍一看顯示的數(shù)據(jù)以為有問題,為什么沒有出現(xiàn)jack0或者jack999,不過find的一下后心情舒坦了。
2> update: 這里就把jack941的名字改掉“mary”
復(fù)制代碼 代碼如下:
static void Main(string[] args)
{
MongodbHelperPerson> helper = new MongodbHelperPerson>();
//修改jack941改成mary
var single = helper.Single(i => i.Name == "jack941");
single.Name = "mary";
helper.Update(single, i => i.ID == single.ID);
Console.WriteLine("修改成功");
Console.Read();
}
3>Delete: 刪除mary這條記錄
復(fù)制代碼 代碼如下:
static void Main(string[] args)
{
MongodbHelperPerson> helper = new MongodbHelperPerson>();
//刪除mary這個(gè)記錄
helper.Delete(i => i.Name == "mary");
Console.WriteLine("刪除成功");
Console.Read();
}
4> list操作: 這里我獲取一下名字里面帶9的人數(shù)列表
復(fù)制代碼 代碼如下:
static void Main(string[] args)
{
MongodbHelperPerson> helper = new MongodbHelperPerson>();
int pagecount;
//獲取名字里面帶9的人數(shù)
var list = helper.List(1, 20, i => i.Name.Contains("9"), out pagecount);
Console.Read();
}
總的運(yùn)行代碼
復(fù)制代碼 代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Linq.Expressions;
using MongoDB.Configuration;
using MongoDB.Linq;
using MongoDB.Attributes;
namespace MongoDB.Test
{
public class MongodbHelperT> where T : class
{
string connectionString = string.Empty;
string databaseName = string.Empty;
string collectionName = string.Empty;
static MongodbHelperT> mongodb;
#region 初始化操作
/// summary>
/// 初始化操作
/// /summary>
public MongodbHelper()
{
connectionString = "Server=127.0.0.1:2222";
databaseName = "shopex";
collectionName = "person";
}
#endregion
#region 實(shí)現(xiàn)linq查詢的映射配置
/// summary>
/// 實(shí)現(xiàn)linq查詢的映射配置
/// /summary>
public MongoConfiguration configuration
{
get
{
var config = new MongoConfigurationBuilder();
config.Mapping(mapping =>
{
mapping.DefaultProfile(profile =>
{
profile.SubClassesAre(t => t.IsSubclassOf(typeof(T)));
});
mapping.MapT>();
mapping.MapT>();
});
config.ConnectionString(connectionString);
return config.BuildConfiguration();
}
}
#endregion
#region 插入操作
/// summary>
/// 插入操作
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public void Insert(T t)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
collection.Insert(t, true);
mongo.Disconnect();
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 更新操作
/// summary>
/// 更新操作
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public void Update(T t, ExpressionFuncT, bool>> func)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
collection.UpdateT>(t, func, true);
mongo.Disconnect();
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 獲取集合
/// summary>
///獲取集合
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public ListT> List(int pageIndex, int pageSize, ExpressionFuncT, bool>> func, out int pageCount)
{
pageCount = 0;
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
pageCount = Convert.ToInt32(collection.Count());
var personList = collection.Linq().Where(func).Skip(pageSize * (pageIndex - 1))
.Take(pageSize).Select(i => i).ToList();
mongo.Disconnect();
return personList;
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 讀取單條記錄
/// summary>
///讀取單條記錄
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public T Single(ExpressionFuncT, bool>> func)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
var single = collection.Linq().FirstOrDefault(func);
mongo.Disconnect();
return single;
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
#region 刪除操作
/// summary>
/// 刪除操作
/// /summary>
/// param name="person">/param>
/// returns>/returns>
public void Delete(ExpressionFuncT, bool>> func)
{
using (Mongo mongo = new Mongo(configuration))
{
try
{
mongo.Connect();
var db = mongo.GetDatabase(databaseName);
var collection = db.GetCollectionT>(collectionName);
//這個(gè)地方要注意,一定要加上T參數(shù),否則會(huì)當(dāng)作object類型處理
//導(dǎo)致刪除失敗
collection.RemoveT>(func);
mongo.Disconnect();
}
catch (Exception)
{
mongo.Disconnect();
throw;
}
}
}
#endregion
}
#region 數(shù)據(jù)實(shí)體
/// summary>
/// 數(shù)據(jù)實(shí)體
/// /summary>
public class Person
{
[MongoAlias("_id")]
public string ID { get; set; }
public string Name { get; set; }
public int Age { get; set; }
public DateTime CreateTime { get; set; }
}
#endregion
}
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