Vitorm.Excel 2.2.0-preview2

Vitorm.Excel

Vitorm.Excel: an simple orm for Excel

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

Build	NuGet

Vitorm.Excel Documentation

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

supported features:

Installation

Before using Vitorm, install the necessary package:

dotnet add package Vitorm.Excel

Minimum viable demo

code address: Program_Min.cs

using System;
using System.Linq;
using System.Threading;
namespace App
{
    public class Program_Min
    {
        static void Main2(string[] args)
        {
            // #1 Init
            using var dbContext = new Vitorm.Excel.DbContext("db_orm.xlsx");
            dbContext.TryDropTable<User>();
            dbContext.TryCreateTable<User>();
            dbContext.Add(new User { id = 1, name = "lith" });
            Thread.Sleep(2000);

            // #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.
code address: Program.cs

using System;
using System.Linq;
using Vitorm;
namespace App
{
    public class Program
    {
        static void Main(string[] args)
        {
            // #1 Configures Vitorm
            using var dbContext = new Vitorm.Excel.DbContext("db_orm.xlsx");

            // #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
            dbContext.Update(new User { id = 1, name = "lith1" });
            dbContext.UpdateRange(new[] {
                new User {   id = 2, name = "lith2", fatherId = 1 },
                new User {   id = 3, name = "lith3", fatherId = 2 }
            });
            //dbContext.Query<User>().Where(u => u.name.Contains("li"))
            //    .ExecuteUpdate(u => new User { name = "Lith" + u.id });

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

            // #7 Join Queries

            // #8 Transactions

            // #9 Database Functions
        }

        // 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.Excel

Config settings

// appsettings.json
{
  "Vitorm": {
    "Data": [
      {
        "provider": "Excel",
        "namespace": "App",
        "connectionString": "db_orm.xlsx"
      }
    ]
  }
}

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.
code address: Program_Min.cs

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

code address: Program.cs

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
            Data.Update(new User { id = 1, name = "lith1" });
            Data.UpdateRange(new[] {
                new User { id = 2, name = "lith2", fatherId = 1 },
                new User { id = 3, name = "lith3", fatherId = 2 }
            });
            Data.Query<User>().Where(u => u.name.Contains("li"))
                .ExecuteUpdate(u => new User { name = "Lith" + u.id });

            // #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

            // #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; }
        }
    }
}

Examples:

Test Example