FreeSql 是一个功能强大的对象关系映射程序(O/RM)，支持 .NETCore 2.1+ 或 .NETFramework 4.5+（QQ群：4336577） 扶摇直上，至强ORM只为自由编码；鹏程万里，至简Linq可使保留黑发；横批：FreeSql（诗人：Coder） # Features - [x] 支持 CodeFirst 迁移； - [x] 支持 DbFirst 从数据库导入实体类； - [x] 大量采用 ExpressionTree 提升性能； - [x] 支持 深入的类型映射，比如pgsql的数组类型； - [x] 支持 丰富的表达式函数； - [x] 支持 导航属性一对多、多对多贪婪加载，以及延时加载； - [x] 支持 同步/异步数据库操作方法； - [x] 支持 读写分离、分表分库，租户设计，过滤器，乐观锁； - [x] 支持 多种数据库，MySql/SqlServer/PostgreSQL/Oracle/Sqlite； | | | | - | - | | | [《新手上路](https://www.cnblogs.com/FreeSql/p/11531300.html) \| [《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) | | | [《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) \| [《BaseEntity》](https://github.com/2881099/FreeSql/tree/master/Examples/base_entity) | | | [《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) | | | [《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) \| [《AOP》](https://github.com/2881099/FreeSql/wiki/AOP) \| [*更新日志*](https://github.com/2881099/FreeSql/wiki/%e6%9b%b4%e6%96%b0%e6%97%a5%e5%bf%97) | # Packages | Package Name | NuGet | Downloads | |--------------| ------- | ---- | | FreeSql | [](https://www.nuget.org/packages/FreeSql) | [](https://www.nuget.org/stats/packages/FreeSql?groupby=Version) | | FreeSql.Repository | [](https://www.nuget.org/packages/FreeSql.Repository) | [](https://www.nuget.org/stats/packages/FreeSql.Repository?groupby=Version) | | FreeSql.DbContext | [](https://www.nuget.org/packages/FreeSql.DbContext) | [](https://www.nuget.org/stats/packages/FreeSql.DbContext?groupby=Version) | | [FreeSql.AdminLTE](https://github.com/2881099/FreeSql.AdminLTE) | [](https://www.nuget.org/packages/FreeSql.AdminLTE) | [](https://www.nuget.org/stats/packages/FreeSql.AdminLTE?groupby=Version) | | [FreeSql.Connection.Extensions](https://github.com/2881099/FreeSql.Connection.Extensions) | [](https://www.nuget.org/packages/FreeSql.Connection.Extensions) | [](https://www.nuget.org/stats/packages/FreeSql.Connection.Extensions?groupby=Version) | > FreeSql 提供了五种使用习惯，请根据实际情况选择团队合适的一种： - 要么FreeSql，原始用法； - 要么[FreeSql.Repository](https://github.com/2881099/FreeSql/wiki/Repository)，仓储+工作单元习惯； - 要么[FreeSql.DbContext](https://github.com/2881099/FreeSql/wiki/DbContext)，有点像efcore的使用习惯； - 要么[FreeSql.Connection.Extensions](https://github.com/2881099/FreeSql.Connection.Extensions)，有点像Dapper的使用习惯； - 要么[BaseEntity](https://github.com/2881099/FreeSql/tree/master/Examples/base_entity)，我求简单现在使用的这个； > 其他下载 - [FreeSql.Tools 生成器](https://github.com/2881099/FreeSql.Tools)，基于 razor 模板的生成器； - [Abp 中使用 FreeSql](https://github.com/gnsilence/JPGZService)，测试中．．．； - [FreeSql 优势.pptx](https://github.com/2881099/FreeSql/files/3305852/FreeSql.pptx)； # Providers | Package Name | Version | |--------------| ------- | | FreeSql.Provider.MySql | NETStandard2.0、net452 | | FreeSql.Provider.PostgreSQL | NETStandard2.0、net45 | | FreeSql.Provider.SqlServer | NETStandard2.0、net451 | | FreeSql.Provider.Sqlite | NETStandard2.0、net45 | | FreeSql.Provider.Oracle | NETStandard2.0、net45 | | FreeSql.Extensions.LazyLoading | NETStandard2.0、net45 | | FreeSql.Extensions.JsonMap | NETStandard2.0、net45 | | FreeSql.Extensions.BaseEntity | NETStandard2.0 |

# Quick start > dotnet add package FreeSql.Provider.Sqlite ```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(); //请务必定义成 Singleton 单例模式 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") .IncludeMany(a => a.Tags, then => then.Where(sub => sub.Name == "xxx")) .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")) .IncludeMany(a => a.Tags, then => then.Where(sub => sub.Name == "xxx")) .ToList(); //Other var t3 = fsql.Select() .Where(a => a.IsDelete == 0) .WhereIf(keyword != null, a => a.UserName.Contains(keyword)) .WhereIf(role_id > 0, a => a.RoleId == role_id) .Where(a => a.Nodes.AsSelect().Any(t => t.Parent.Id == t.UserId)) .Count(out var total) .Page(page, size) .OrderByDescending(a => a.Id) .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 = fsql.Select() .Where(a => new[] { 1, 2, 3 }.Contains(a.Id)) .ToList(); ``` ```csharp var t4 = fsql.Select() .Where(a => a.CreateTime.Date == DateTime.Now.Date) .ToList(); ``` ```csharp var t5 = fsql.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 uow = fsql.CreateUnitOfWork()) { var repo1 = uow.GetRepository(); var repo2 = uow.GetRepository(); await repo1.InsertAsync(new Song()); await repo2.InsertAsync(new Tag()); uow.Commit(); } ``` # DbContext & DbSet > dotnet add package FreeSql.DbContext ```csharp using (var ctx = new fsql.CreateDbContext()) { var songs = ctx.Set(); var tags = ctx.Set(); var tag = new Tag { Name = "testaddsublist", Tags = new[] { new Tag { Name = "sub1" }, new Tag { Name = "sub2" }, new Tag { Name = "sub3", Tags = new[] { new Tag { Name = "sub3_01" } } } } }; //tags.Add(tag); ctx.Add(tag); await ctx.SaveChangesAsync(); } ``` # DataFilter & Tenant ```csharp public void ConfigureServices(IServiceCollection services) { services.AddSingleton(Fsql); services.AddFreeRepository(filter => filter .Apply("SoftDelete", a => a.IsDeleted == false) .Apply("Tenant", a => a.TenantId == 1) , this.GetType().Assembly ); } ``` Temporary disable: ```csharp var repoq = fsql.GetRepository(); using (repo1.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)、 [mypeng1985](https://github.com/mypeng1985)、 [stulzq](https://github.com/stulzq)、 [movingsam](https://github.com/movingsam)、 [ALer-R](https://github.com/ALer-R)、 [zouql](https://github.com/zouql)、 深圳|凉茶