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通用的CRUD之MongoDB

发布时间 2023-07-09 10:32:39作者: .将

前言

这是一个简便的,对MongoDB增删改查，无需提前建库，建表，安装就能快速上手使用。
MongoDB多条件查询需要JSON的多层嵌套如{DDATE:{$gte:{$date:'2023-06-05T13:41'},$lte:{$date:'2023-06-05T23:59'}},Qty:{$gt:10}}，书写时非常难受，还容易出错。
本类库支持类SQL查询语法,如"DDATE>='2023-06-05 09:12:24' and DDATE<='2023-06-05 13:28:48' and Qty>10"，同时也支持原生查询语法。

安装

Install-Package DbCRUD.LiteDB 安装包

数据库连接及初始化 Database connection and initialization

 //数据库连接 Database connection
  IDbCRUD testdb =new MongoDbCRUD("mongodb://localhost:27017/testdb");
 //带连接选项初始化数据库连接对象
  MongoDbCRUD testdb = new MongoDbCRUD("mongodb://localhost:27017/testdb", opt => { opt.AutoCreateIndex = true;opt.AutoOpen = true; });

插入数据 Insert data

//*****插入对象数据 Insert object data synchronously
int id = testdb.Max<int>(tb_custormer);
var customer = new CrudTestModel
{
    ID = id + 1,
    Name = "objectData",
    Phones = new string[] { "80000", "90000" },
    FFloat=random.NextDouble(),
    IsActive = true,
    Dic = new Dictionary<string, object>
    {
        { "Name", "Embed_Data" },
        { "DDate", DateTime.Now }
    }
};
var result = testdb.Insert(tb_custormer, customer);
//*****插入字典数据 Insert dictionary data synchronously
var dic1 = new Dictionary<string, object>
{
    //{ "_id", 1 },//***如果不指定ID,插入时会自动编一个objectid的唯一ID
    { "Name", "MongodbCRUD" },
    { "Qty",random.Next(1,10000) },
    { "DDATE", DateTime.Now }
};
var dicresult = testdb.Insert(autoIDData, dic1);
//*****插入JSON数据 Insert JSON data 
string jsondata = JsonConvert.SerializeObject(dic1);
var result12 =testdb.Insert(tb_jsondata, jsondata);
//*****SQL语句插入 sql command insert 大小写敏感
var result13 = testdb.Insert($"insert into {sqldata}('name','date') values ('test1','{DateTime.Now.ToString("yyyy-MM-dd HH:mm:dd")}')");
//*****批量插入列表 Batch insert
List<Dictionary<string, object>> listdata = new List<Dictionary<string, object>>();
int maxid = testdb.Max<int>(dictable);
for (int i = 0; i < 10; i++)
{
    maxid++;
    var dic2 = new Dictionary<string, object>
    {
        { "_id",maxid },
        { "Name", "Batch insert" },
        { "Qty",random.Next(1,10000) },
        { "DDATE", DateTime.Now }
    };
    listdata.Add(dic2);
}
var listResult= testdb.Insert(dictable, listdata);

更新数据 update data

    var updata = new Dictionary<string, object>
    {
        { "Name", "更新指定字段数据 Updates the specified field data" },
        { "Qty", 600}
    };
    var upresult = testdb.UpDate(dictable, updata, "_id=6");   //更新_id=2的数据
    //【SQL语句更新】 更新_id=1的数据 ，mongodb对大小写敏感，所有sql语句中的表名和字段名大小写要与DB一致。
    var sql_up_result = testdb.UpDate("UPDATE dicdata SET Name='zzw',Qty=188 where _id=1");

更新及插入数据（数据存在更新，不存在插入） Update and insert data (there is an update of the data, but there is no insertion)

    //***** 更新或插入数据 Update or insert data
    var dic1 = new Dictionary<string, object>
    {
        { "_id", 2 },
        { "Name", "Inserts or updates a single piece of data" },
        { "Qty", 200},
        { "DDATE", DateTime.Now }
    };
    var result= testdb.Upsert(dictable, dic1);

   //*****Batch insert or update Batch insert or update
    var dic3 = new Dictionary<string, object>
    {
        { "_id", 3 },
        { "Name", "Batch insert or update" },
        { "Qty", 300},
        { "DDATE", DateTime.Now }
    };
    List<Dictionary<string,object>> listdata=new List<Dictionary<string, object>> { dic3,dic1};
    var listresult = testdb.Upsert(dictable, listdata);

   //*****不存在就插入 Insert if it doesn't exist
    int maxid = testdb.Max<int>(dictable)+1;
    var dic4 = new Dictionary<string, object>
    {
        { "_id", maxid },
        { "Name", "根据_id不存在插入值" },
        { "Qty", 8000},
        { "DDATE", DateTime.Now }
    };
    testdb.Upsert(dictable, dic4);

查询数据 Query data

   ///查找id=2的数据
    var databyid = testdb.FindByID<Dictionary<string, object>>(dictable, 2);

    //查找id=2的数据,返回模型数据。 
    //【注意】模型和数据库中的列数不一致时，需要在模型上加 [BsonIgnoreExtraElements]特性，
    //        mongodb默认时UTC时间，如果要转本地时间，在模型时间属性上加[BsonDateTimeOptions(Kind =DateTimeKind.Local)]特性
    var modeldata = testdb.Find<CrudTestModel1>(tb_custormer, "_id=2")?.FirstOrDefault();

    ///查找id>2的数据,返回按DDATE排序,并排除dic列的最新一条数据
    var ondresult = testdb.FindOne<CrudTestModel>(tb_custormer, "_id>2", project: "!dic", sort: "!DDATE");

    //查找Qty>10的数据
    var wheredata = testdb.Find<Dictionary<string, object>>(dictable, "Qty>10");
    
    //【SQL语法,查找开头】，查找name中'Mongodbi'开头的数据,条件不区分大小写，字段名称区分大小写
    var like_result = testdb.FindAndResult<Dictionary<string, object>>(autoIDData, "Name like'Mongodb%'");

    //【SQL语法,查找结尾】，查找name中'crud'开头的数据,条件不区分大小写，字段名称区分大小写
    var like_result1 = testdb.FindAndResult<Dictionary<string, object>>(autoIDData, "Name like'%crud'");

    //【SQL语法，包含】，查找name中包含'odb'的数据,条件不区分大小写，字段名称区分大小写
    var like_result2 = testdb.FindAndResult<Dictionary<string, object>>(autoIDData, "Name like'%odb%'");
    
    //【MongoDB语法】，查找name中'Mongodbi'开头的数据,不区分大小写
    var bsonwheredata = testdb.Find<Dictionary<string, object>>(autoIDData, "{Name:/^Mongodb/i}");
    
    //****SQL语法和Mongodb查询语法不能混用，简单查询使用SQL语法，书写简单，复杂查询只能使用原生语法。
    //【简写语法】分页查找Qty>10,返回除_id列，按DDATE倒序排序的数据，返回第一页10条数据。
    var pagedata = testdb.GetPagingData<Dictionary<string, object>>(tb_jsondata, "Qty>10",project:"!_id",sort: "!DDATE", pageindex: 1, pagecount: 10);
    
    //【Mongodb语法】分页查找Qty>10,返回除_id列，按DDATE倒序排序的数据，返回第一页10条数据。
    var mgdb_pagedata = testdb.GetPagingData<Dictionary<string, object>>(tb_jsondata, "{Qty:{$gt:10}}", project: "{_id:0}", sort: "{DDATE:-1}", pageindex: 1, pagecount: 10);
    
    //【返回DataTable】分页查找Qty>10,返回除_id列，按DDATE倒序排序的数据，返回第一页10条数据。
    var datatable_pagedata = testdb.GetPagingData(autoIDData, "Qty>10", project: "!_id", sort: "!DDATE", pageindex: 1, pagecount: 10);
   
    //【多条件查询】分页查找Qty>10,返回除_id列，按DDATE倒序排序的数据，返回第一页10条数据。
    var mu_where = testdb.GetPagingData<Dictionary<string, object>>(dictable, "_id>=6 and Qty>10", sort: "!DDATE", pageindex: 1, pagecount: 10);
   
    //【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
    var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "DDATE>='2023-06-05 09:12:24' and DDATE<='2023-06-05 13:28:48'", sort: "!DDATE", pageindex: 1, pagecount: 10);
    
    //【in查询】查找Qty=200和300的数据。
    var in_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "Qty in(200,300)", sort: "!DDATE", pageindex: 1, pagecount: 10);
   
    //【in模糊查询】查找Name=Batch insert和data结尾的数据。
    var in_fuzzy = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "Name in('Batch insert','%data')", sort: "!DDATE", pageindex: 1, pagecount: 10);

    //【正则表达式查询】查找Name=Batch开头的数据。
    var in_regex = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "Name reg'^Batch'", sort: "!DDATE", pageindex: 1, pagecount: 10);s
    //【sql语句查询】查找_id=1的数据
    string sqlcmd = $"select _id,Name,DDATE from {dictable} where _id=1";
    var sqldata = testdb.Find<Dictionary<string, object>>(sqlcmd);
    //【委托查询】查找_id>=6 and Qty>10的数据。数据在委托中返回，方便进行数据处理
    var action_result = testdb.GetPagingDataAction<CrudTestModel1>(dictable, "_id>=6 and Qty>10", datalist => 
    {
        double sum = datalist.Sum(s => s.FFloat);
                
    });

删除数据 delete data

    //**删除ID=8的数据
    var result = testdb.Delete(dictable, 8);

    //**删除qty>10的数据
     var wherresult = testdb.Delete(dictable, "_id>=10");
    //**使用sql语句删除ID = 7的数据，大小写敏感
    string sql = $"delete from {dictable} where _id=7";
    var sqlresult = testdb.Delete(sql);

消息事件绑定（可日志输出）

    public DbTest() {
    t estdb.Message += Testdb_Message;
    }

    private void Testdb_Message((string Message, string Level, DateTime Time) obj)
    {
       Debug.WriteLine($"{obj.Time}|{obj.Level}|{obj.Message}");
    }

增删改查系列包

一致的增删改查语法

LiteDB

IDbCRUD testdb = new LiteDbCRUD(@"filename=CRUDTestDB.db");
//【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, $"DDATE>='2023-06-05 09:12:24' and DDATE<='{DateTime.Now:yyyy-MM-dd HH:mm:ss}'");

MongoDB

IDbCRUD testdb =new MongoDbCRUD("mongodb://localhost:27017/testdb");
//【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, $"DDATE>='2023-06-05 09:12:24' and DDATE<='{DateTime.Now:yyyy-MM-dd HH:mm:ss}'");

Mysql

IDbCRUD testdb = new MysqlCRUD(@"Server=127.0.0.1;Database=testdb;Uid=root;Pwd=;");

//【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, $"DDATE>='2023-06-05 09:12:24' and DDATE<='{DateTime.Now:yyyy-MM-dd HH:mm:ss}'");

Sqlite

IDbCRUD testdb = new SqliteCRUD($@"Data Source=sqlitedb.db; Cache=Shared")

//【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, $"DDATE>='2023-06-05 09:12:24' and DDATE<='{DateTime.Now:yyyy-MM-dd HH:mm:ss}'");

SQL SERVER

IDbCRUD testdb = new SqlServerCRUD(@"Data Source=xxx;Initial Catalog=xxx;User ID=sa;Password=xxx;Encrypt=True;TrustServerCertificate=True;");
//【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, $"DDATE>='2023-06-05 09:12:24' and DDATE<='{DateTime.Now:yyyy-MM-dd HH:mm:ss}'");

实体模型

     [BsonIgnoreExtraElements]
    public class CrudTestModel1
    {
        [BsonId]
        public int ID { get; set; }
        public string Name { get; set; }
        public string[] Phones { get; set; }
        public bool IsActive { get; set; }
        public double FFloat { get; set; } = 0.118;
        [BsonDateTimeOptions(Kind = DateTimeKind.Local)]
        public DateTime DDATE { get; set; } = DateTime.Now;

    }

更多使用方法请移步到仓库 https://gitee.com/lzcode/db-crud

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