Vitorm.ClickHouse 2.2.0-preview

Vitorm.ClickHouse

Vitorm.ClickHouse is a lightweight yet comprehensive ORM for ClickHouse that strikes the perfect balance between simplicity and functionality.
Similar to Dapper in its lightweight design, Vitorm offers an easy-to-use, efficient interface for data access.
However, it doesn't stop there; Vitorm goes beyond basic ORM capabilities to provide a rich feature set akin to Entity Framework.
This means you get the best of both worlds: the performance and simplicity of Dapper with the robust features and flexibility of Entity Framework, making Vitorm an ideal choice for developers seeking a powerful yet streamlined ORM solution.

source address: https://github.com/Vit-Orm/Vitorm.ClickHouse

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Vitorm.ClickHouse Documentation

This guide will walk you through the steps to set up and use Vitorm.ClickHouse.

supported features:

Installation

Before using Vitorm, install the necessary package:

dotnet add package Vitorm.ClickHouse

Minimum viable demo

using Vitorm;
namespace App
{
    public class Program_Min
    {
        static void Main2(string[] args)
        {
            // #1 Init
            using var dbContext = new Vitorm.Sql.SqlDbContext();
            dbContext.UseClickHouse("Host=localhost;Port=8123;Database=dev-orm;User=default;Password=;Compress=True;CheckCompressedHash=False;Compressor=lz4;");

            // #2 Query
            var user = dbContext.Get<User>(1);
            var users = dbContext.Query<User>().Where(u => u.name.Contains("li")).ToList();
        }

        // Entity Definition
        [System.ComponentModel.DataAnnotations.Schema.Table("User")]
        public class User
        {
            [System.ComponentModel.DataAnnotations.Key]
            public int id { get; set; }
            public string name { get; set; }
            public DateTime? birth { get; set; }
            public int? fatherId { get; set; }
        }
    }
}

Full Example

This example provides a comprehensive guide to utilizing Vitorm for basic and advanced database operations while maintaining lightweight performance.

using Vitorm;

namespace App
{
    public class Program
    {
        static void Main(string[] args)
        {
            // #1 Configures Vitorm
            using var dbContext = new Vitorm.Sql.SqlDbContext();
            dbContext.UseClickHouse("Host=localhost;Port=8123;Database=dev-orm;User=default;Password=;Compress=True;CheckCompressedHash=False;Compressor=lz4;");

            // #2 Create Table
            dbContext.TryDropTable<User>();
            dbContext.TryCreateTable<User>();

            // #3 Insert Records
            dbContext.Add(new User { id = 1, name = "lith" });
            dbContext.AddRange(new[] {
                new User { id = 2, name = "lith", fatherId = 1 },
                new User { id = 3, name = "lith", fatherId = 1 }
            });

            // #4 Query Records
            {
                var user = dbContext.Get<User>(1);
                var users = dbContext.Query<User>().Where(u => u.name.Contains("li")).ToList();
                var sql = dbContext.Query<User>().Where(u => u.name.Contains("li")).ToExecuteString();
            }

            // #5 Update Records


            // #6 Delete Records
            dbContext.Delete<User>(new User { id = 1, name = "lith1" });
            dbContext.DeleteRange(new[] {
                new User { id = 2, name = "lith2", fatherId = 1 },
                new User { id = 3, name = "lith3", fatherId = 2 }
            });
            dbContext.DeleteByKey<User>(1);
            dbContext.DeleteByKeys<User, int>(new[] { 1, 2 });
            dbContext.Query<User>().Where(u => u.name.Contains("li"))
                .ExecuteDelete();

            // #7 Join Queries
            {
                var query =
                        from user in dbContext.Query<User>()
                        from father in dbContext.Query<User>().Where(father => user.fatherId == father.id).DefaultIfEmpty()
                        where father != null
                        orderby user.id
                        select new { user, father };

                var sql = query.ToExecuteString();
                var users = query.ToList();
            }

            // #8 Transactions
            {
                using var tran1 = dbContext.BeginTransaction();
                dbContext.Update(new User { id = 4, name = "u4001" });

                using (var tran2 = dbContext.BeginTransaction())
                {
                    dbContext.Update(new User { id = 4, name = "u4002" });
                    // will rollback
                }

                using (var tran2 = dbContext.BeginTransaction())
                {
                    dbContext.Update(new User { id = 4, name = "u4002" });
                    tran2.Rollback();
                }

                using (var tran2 = dbContext.BeginTransaction())
                {
                    dbContext.Update(new User { id = 4, name = "u4003" });
                    tran2.Commit();
                }

                tran1.Commit();
            }
        }

        // Entity Definition
        [System.ComponentModel.DataAnnotations.Schema.Table("User")]
        public class User
        {
            [System.ComponentModel.DataAnnotations.Key]
            public int id { get; set; }
            public string name { get; set; }
            public DateTime? birth { get; set; }
            public int? fatherId { get; set; }
        }
    }
}

Explanation

1. Setup: Initializes the database and configures Vitorm.
2. Create Table: Drops and recreates the User table.
3. Insert Records: Adds single and multiple user records.
4. Query Records: Retrieves user records using various querying methods.
5. Update Records: Updates single and multiple user records.
6. Delete Records: Deletes single and multiple user records.
7. Join Queries: Performs a join operation between user and father records.
8. Transactions: Demonstrates nested transactions and rollback/commit operations.
9. Database Functions: Uses custom database functions in queries.

Vitorm.Data Documentation

Vitorm.Data is a static class that allows you to use Vitorm without explicitly creating or disposing of a DbContext.

Installation

Before using Vitorm.Data, install the necessary package:

dotnet add package Vitorm.Data
dotnet add package Vitorm.ClickHouse

Config settings

// appsettings.json
{
  "Vitorm": {
    "Data": [
      {
        "provider": "ClickHouse",
        "namespace": "App",
        "connectionString": "Host=localhost;Port=8123;Database=dev-orm;User=default;Password=;Compress=True;CheckCompressedHash=False;Compressor=lz4;"
      }
    ]
  }
}

Minimum viable demo

After configuring the appsettings.json file, you can directly perform queries without any additional configuration or initialization, Vitorm.Data is that easy to use.

using Vitorm;
namespace App
{
    public class Program_Min
    {
        static void Main2(string[] args)
        {
            //  Query Records
            var user = Data.Get<User>(1);
            var users = Data.Query<User>().Where(u => u.name.Contains("li")).ToList();
        }

        // Entity Definition
        [System.ComponentModel.DataAnnotations.Schema.Table("User")]
        public class User
        {
            [System.ComponentModel.DataAnnotations.Key]
            public int id { get; set; }
            public string name { get; set; }
            public DateTime? birth { get; set; }
            public int? fatherId { get; set; }
        }
    }
}

Full Example

using Vitorm;

namespace App
{
    public class Program
    {
        static void Main(string[] args)
        {
            // #1 No need to init Vitorm.Data

            // #2 Create Table
            Data.TryDropTable<User>();
            Data.TryCreateTable<User>();

            // #3 Insert Records
            Data.Add(new User { id = 1, name = "lith" });
            Data.AddRange(new[] {
                new User { id = 2, name = "lith", fatherId = 1 },
                new User { id = 3, name = "lith", fatherId = 1 }
            });

            // #4 Query Records
            {
                var user = Data.Get<User>(1);
                var users = Data.Query<User>().Where(u => u.name.Contains("li")).ToList();
                var sql = Data.Query<User>().Where(u => u.name.Contains("li")).ToExecuteString();
            }

            // #5 Update Records


            // #6 Delete Records
            Data.Delete<User>(new User { id = 1, name = "lith1" });
            Data.DeleteRange(new[] {
                new User { id = 2, name = "lith2", fatherId = 1 },
                new User { id = 3, name = "lith3", fatherId = 2 }
            });
            Data.DeleteByKey<User>(1);
            Data.DeleteByKeys<User, int>(new[] { 1, 2 });
            Data.Query<User>().Where(u => u.name.Contains("li"))
                .ExecuteDelete();

            // #7 Join Queries
            {
                var query =
                        from user in Data.Query<User>()
                        from father in Data.Query<User>().Where(father => user.fatherId == father.id).DefaultIfEmpty()
                        where father != null
                        orderby user.id
                        select new { user, father };

                var sql = query.ToExecuteString();
                var users = query.ToList();
            }

            // #8 Transactions
        }

        // Entity Definition
        [System.ComponentModel.DataAnnotations.Schema.Table("User")]
        public class User
        {
            [System.ComponentModel.DataAnnotations.Key]
            public int id { get; set; }
            public string name { get; set; }
            public DateTime? birth { get; set; }
            public int? fatherId { get; set; }
        }
    }
}

Test Example