FreeSql 是一个功能强大的 .NETStandard 库,用于对象关系映射程序(O/RM),便于开发人员能够使用 .NETStandard 对象来处理数据库,不必经常编写大部分数据访问代码。支持 .NETCore 2.1+ 或 .NETFramework 4.6.1+。 | Package Name | NuGet | Downloads | |--------------| ------- | ---- | | FreeSql | [![nuget](https://img.shields.io/nuget/v/FreeSql.svg?style=flat-square)](https://www.nuget.org/packages/FreeSql) | [![stats](https://img.shields.io/nuget/dt/FreeSql.svg?style=flat-square)](https://www.nuget.org/stats/packages/FreeSql?groupby=Version) | | [FreeSql.Repository](https://github.com/2881099/FreeSql/wiki/Repository) | [![nuget](https://img.shields.io/nuget/v/FreeSql.Repository.svg?style=flat-square)](https://www.nuget.org/packages/FreeSql.Repository) | [![stats](https://img.shields.io/nuget/dt/FreeSql.Repository.svg?style=flat-square)](https://www.nuget.org/stats/packages/FreeSql.Repository?groupby=Version) | | [FreeSql.DbContext](https://github.com/2881099/FreeSql.DbContext) | [![nuget](https://img.shields.io/nuget/v/FreeSql.DbContext.svg?style=flat-square)](https://www.nuget.org/packages/FreeSql.DbContext) | [![stats](https://img.shields.io/nuget/dt/FreeSql.DbContext.svg?style=flat-square)](https://www.nuget.org/stats/packages/FreeSql.DbContext?groupby=Version) | # 特性 - [x] 支持 CodeFirst 迁移; - [x] 支持 DbFirst 从数据库导入实体类,支持三种模板生成器; - [x] 采用 ExpressionTree 高性能读取数据; - [x] 支持深入的类型映射,比如pgsql的数组类型,堪称匠心制作; - [x] 支持丰富的表达式函数; - [x] 支持导航属性查询,和延时加载; - [x] 支持同步/异步数据库操作方法,丰富多彩的链式查询方法; - [x] 支持读写分离、分表分库,租户设计; - [x] 支持多种数据库,MySql/SqlServer/PostgreSQL/Oracle/Sqlite; | | | | - | - | | ![image](https://user-images.githubusercontent.com/16286519/55138232-f5e19e80-516d-11e9-9144-173cc7e52845.png) | [《Select》](https://github.com/2881099/FreeSql/wiki/%e6%9f%a5%e8%af%a2) \| [《Update》](https://github.com/2881099/FreeSql/wiki/%e4%bf%ae%e6%94%b9) \| [《Insert》](https://github.com/2881099/FreeSql/wiki/%e6%b7%bb%e5%8a%a0) \| [《Delete》](https://github.com/2881099/FreeSql/wiki/%e5%88%a0%e9%99%a4) | | ![image](https://user-images.githubusercontent.com/16286519/55138241-faa65280-516d-11e9-8b27-139dea46e4df.png) | [《表达式函数》](https://github.com/2881099/FreeSql/wiki/%e8%a1%a8%e8%be%be%e5%bc%8f%e5%87%bd%e6%95%b0) \| [《CodeFirst》](https://github.com/2881099/FreeSql/wiki/CodeFirst) \| [《DbFirst》](https://github.com/2881099/FreeSql/wiki/DbFirst) | | ![image](https://user-images.githubusercontent.com/16286519/55138263-06921480-516e-11e9-8da9-81f18a18b694.png) | [《Repository》](https://github.com/2881099/FreeSql/wiki/Repository) \| [《UnitOfWork》](https://github.com/2881099/FreeSql/wiki/%e5%b7%a5%e4%bd%9c%e5%8d%95%e5%85%83) \| [《过滤器》](https://github.com/2881099/FreeSql/wiki/%e8%bf%87%e6%bb%a4%e5%99%a8) \| [《乐观锁》](https://github.com/2881099/FreeSql/wiki/%e4%bf%ae%e6%94%b9) \| [《DbContext》](https://github.com/2881099/FreeSql/wiki/DbContext) | | ![image](https://user-images.githubusercontent.com/16286519/55138284-0eea4f80-516e-11e9-8764-29264807f402.png) | [《读写分离》](https://github.com/2881099/FreeSql/wiki/%e8%af%bb%e5%86%99%e5%88%86%e7%a6%bb) \| [《分区分表》](https://github.com/2881099/FreeSql/wiki/%e5%88%86%e5%8c%ba%e5%88%86%e8%a1%a8) \| [《租户》](https://github.com/2881099/FreeSql/wiki/%e7%a7%9f%e6%88%b7) \| [更新日志](https://github.com/2881099/FreeSql/wiki/%e6%9b%b4%e6%96%b0%e6%97%a5%e5%bf%97) | # Quick start > dotnet add package FreeSql ```csharp IFreeSql fsql = new FreeSql.FreeSqlBuilder() .UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Pooling=true;Max Pool Size=10") .UseAutoSyncStructure(true) //自动同步实体结构到数据库 .Build(); class Song { [Column(IsIdentity = true)] public int Id { get; set; } public string Title { get; set; } public string Url { get; set; } public DateTime CreateTime { get; set; } public virtual ICollection Tags { get; set; } } class Song_tag { public int Song_id { get; set; } public virtual Song Song { get; set; } public int Tag_id { get; set; } public virtual Tag Tag { get; set; } } class Tag { [Column(IsIdentity = true)] public int Id { get; set; } public string Name { get; set; } public int? Parent_id { get; set; } public virtual Tag Parent { get; set; } public virtual ICollection Songs { get; set; } public virtual ICollection Tags { get; set; } } ``` # Query ```csharp //OneToOne、ManyToOne var t0 = fsql.Select().Where(a => a.Parent.Parent.Name == "粤语").ToList(); //OneToMany var t1 = fsql.Select().Where(a => a.Tags.AsSelect().Any(t => t.Parent.Id == 10)).ToList(); //ManyToMany var t2 = fsql.Select().Where(s => s.Tags.AsSelect().Any(t => t.Name == "国语")).ToList(); ``` 更多前往Wiki:[《Select 查询数据文档》](https://github.com/2881099/FreeSql/wiki/%e6%9f%a5%e8%af%a2) ```csharp var t3 = f.Select.Where(a => new[] { 1, 2, 3 }.Contains(a.Id)).ToList(); ``` ```csharp var t4 = select.Where(a => a.CreateTime.Date == DateTime.Now.Date).ToList(); ``` ```csharp var t5 = select.OrderBy(a => Guid.NewGuid()).Limit(1).ToList(); ``` 更多前往Wiki:[《表达式函数》](https://github.com/2881099/FreeSql/wiki/%e8%a1%a8%e8%be%be%e5%bc%8f%e5%87%bd%e6%95%b0) # Repository & UnitOfWork > dotnet add package FreeSql.Repository ```csharp using (var unitOfWork = fsql.CreateUnitOfWork()) { var songRepository = uow.GetRepository(); var tagRepository = uow.GetRepository(); await songRepository.InsertAsync(new Song()); await tagRepository.InsertAsync(new Tag()); uow.Commit(); } ``` # DbContext & DbSet > dotnet add package FreeSql.DbContext ```csharp public class SongContext : DbContext { public DbSet Songs { get; set; } public DbSet Tags { get; set; } protected override void OnConfiguring(DbContextOptionsBuilder builder) { builder.UseFreeSql(fsql); } } using (var ctx = new SongContext()) { var song = new Song { }; await ctx.Songs.AddAsync(song); var id = song.Id; var adds = Enumerable.Range(0, 100).Select(a => new Song { Title = "xxxx" + a, Url = "url222" }).ToList(); await ctx.Songs.AddRangeAsync(adds); for (var a = 0; a < adds.Count; a++) adds[a].Title = "dkdkdkdk" + a; ctx.Songs.UpdateRange(adds); ctx.Songs.RemoveRange(adds.Skip(10).Take(20).ToList()); ctx.Songs.Update(adds.Last()); await ctx.SaveChangesAsync(); } ``` # DataFilter & Tenant ```csharp public IServiceProvider ConfigureServices(IServiceCollection services) { services.AddSingleton(fsql); services.AddMvc(); var builder = new ContainerBuilder(); builder.RegisterFreeRepository(filter => filter .Apply("SoftDelete", a => a.IsDeleted == false) .Apply("Tenant", a => a.TenantId == 1) ); builder.Populate(services); var container = builder.Build(); return new AutofacServiceProvider(container); } ``` Temporary disable: ```csharp var songRepository = fsql.GetRepository(); using (songRepository.DataFilter.Disable("Tenant")) { //Tenant Invalid } //Tenant restore ``` # Performance FreeSql Query & Dapper Query ```shell Elapsed: 00:00:00.6733199; Query Entity Counts: 131072; ORM: Dapper Elapsed: 00:00:00.4554230; Query Tuple Counts: 131072; ORM: Dapper Elapsed: 00:00:00.6846146; Query Dynamic Counts: 131072; ORM: Dapper Elapsed: 00:00:00.6818111; Query Entity Counts: 131072; ORM: FreeSql* Elapsed: 00:00:00.6060042; Query Tuple Counts: 131072; ORM: FreeSql* Elapsed: 00:00:00.4211323; Query ToList Counts: 131072; ORM: FreeSql* Elapsed: 00:00:01.0236285; Query Dynamic Counts: 131072; ORM: FreeSql* ``` FreeSql ToList & Dapper Query ```shell Elapsed: 00:00:00.6707125; ToList Entity Counts: 131072; ORM: FreeSql* Elapsed: 00:00:00.6495301; Query Entity Counts: 131072; ORM: Dapper ``` [Test code](FreeSql.Tests.PerformanceTests/MySqlAdoTest.cs) # Contributors [systemhejiyong](https://github.com/systemhejiyong) [LambertW](https://github.com/LambertW)