mirror of
https://github.com/nsnail/FreeSql.git
synced 2025-08-01 17:35:58 +08:00
initial commit
This commit is contained in:
37
FreeSql.Repository/FreeSql.Repository.csproj
Normal file
37
FreeSql.Repository/FreeSql.Repository.csproj
Normal file
@ -0,0 +1,37 @@
|
||||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<TargetFrameworks>net8.0;net7.0;net6.0;net5.0;netcoreapp3.1;netstandard2.1;netstandard2.0;net45;net40</TargetFrameworks>
|
||||
<Authors>FreeSql;ncc;YeXiangQin</Authors>
|
||||
<Description>FreeSql Implementation of General Repository, Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite/Firebird/Clickhouse/QuestDB/达梦/人大金仓/南大通用/虚谷/神舟通用/翰高/Access, and read/write separation、and split table.</Description>
|
||||
<PackageProjectUrl>https://github.com/2881099/FreeSql/wiki/Repository</PackageProjectUrl>
|
||||
<PackageTags>FreeSql ORM Repository</PackageTags>
|
||||
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
|
||||
<RepositoryType>git</RepositoryType>
|
||||
<PackageLicenseExpression>MIT</PackageLicenseExpression>
|
||||
<PackageId>$(AssemblyName)</PackageId>
|
||||
<PackageIcon>logo.png</PackageIcon>
|
||||
<Title>$(AssemblyName)</Title>
|
||||
<IsPackable>true</IsPackable>
|
||||
<GenerateAssemblyInfo>true</GenerateAssemblyInfo>
|
||||
<SignAssembly>true</SignAssembly>
|
||||
<AssemblyOriginatorKeyFile>key.snk</AssemblyOriginatorKeyFile>
|
||||
<DelaySign>false</DelaySign>
|
||||
<Version>3.2.833</Version>
|
||||
<PackageReadmeFile>readme.md</PackageReadmeFile>
|
||||
</PropertyGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<None Include="../readme.md" Pack="true" PackagePath="\"/>
|
||||
<None Include="../logo.png" Pack="true" PackagePath="\" />
|
||||
</ItemGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<ProjectReference Include="..\FreeSql.DbContext\FreeSql.DbContext.csproj" />
|
||||
</ItemGroup>
|
||||
|
||||
<PropertyGroup Condition="'$(TargetFramework)' == 'net40'">
|
||||
<DefineConstants>net40</DefineConstants>
|
||||
</PropertyGroup>
|
||||
|
||||
</Project>
|
BIN
FreeSql.Repository/key.snk
Normal file
BIN
FreeSql.Repository/key.snk
Normal file
Binary file not shown.
238
FreeSql.Repository/readme.md
Normal file
238
FreeSql.Repository/readme.md
Normal file
@ -0,0 +1,238 @@
|
||||
FreeSql.Repository 作为扩展,实现了通用仓储层功能。与其他规范标准一样,仓储层也有相应的规范定义。FreeSql.Repository 参考 abp vnext 接口,定义和实现基础的仓储层(CURD),应该算比较通用的方法吧。
|
||||
|
||||
## 安装
|
||||
|
||||
> dotnet add package FreeSql.Repository
|
||||
|
||||
## 定义
|
||||
|
||||
```csharp
|
||||
static IFreeSql fsql = new FreeSql.FreeSqlBuilder()
|
||||
.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Pooling=true;Max Pool Size=10")
|
||||
.UseAutoSyncStructure(true) //自动迁移实体的结构到数据库
|
||||
.Build(); //请务必定义成 Singleton 单例模式
|
||||
|
||||
public class Song {
|
||||
[Column(IsIdentity = true)]
|
||||
public int Id { get; set; }
|
||||
public string Title { get; set; }
|
||||
}
|
||||
```
|
||||
|
||||
## 使用方法
|
||||
|
||||
1、IFreeSql 的扩展方法;
|
||||
|
||||
```csharp
|
||||
var curd = fsql.GetRepository<Song>();
|
||||
```
|
||||
|
||||
> 注意:Repository对象多线程不安全
|
||||
|
||||
2、继承实现;
|
||||
|
||||
```csharp
|
||||
public class SongRepository : BaseRepository<Song, int> {
|
||||
public SongRepository(IFreeSql fsql) : base(fsql, null, null) {}
|
||||
|
||||
//在这里增加 CURD 以外的方法
|
||||
}
|
||||
```
|
||||
|
||||
3、依赖注入;
|
||||
|
||||
```csharp
|
||||
public void ConfigureServices(IServiceCollection services) {
|
||||
|
||||
services.AddSingleton<IFreeSql>(Fsql);
|
||||
services.AddFreeRepository(filter => filter
|
||||
.Apply<ISoftDelete>("SoftDelete", a => a.IsDeleted == false)
|
||||
.Apply<ITenant>("Tenant", a => a.TenantId == 1)
|
||||
,
|
||||
this.GetType().Assembly
|
||||
);
|
||||
}
|
||||
|
||||
//在控制器使用
|
||||
public SongsController(GuidRepository<Song> repos1) {
|
||||
}
|
||||
```
|
||||
|
||||
> 依赖注入的方式可实现全局【过滤与验证】的设定,方便租户功能的设计;
|
||||
|
||||
更多资料:[《过滤器、全局过滤器》](https://github.com/2881099/FreeSql/wiki/%e8%bf%87%e6%bb%a4%e5%99%a8)
|
||||
|
||||
## 过滤与验证
|
||||
|
||||
假设我们有User(用户)、Topic(主题)两个实体,在领域类中定义了两个仓储:
|
||||
|
||||
```csharp
|
||||
var userRepository = fsql.GetGuidRepository<User>();
|
||||
var topicRepository = fsql.GetGuidRepository<Topic>();
|
||||
```
|
||||
|
||||
在开发过程中,总是担心 topicRepository 的数据安全问题,即有可能查询或操作到其他用户的主题。因此我们在v0.0.7版本进行了改进,增加了 filter lambda 表达式参数。
|
||||
|
||||
```csharp
|
||||
var userRepository = fsql.GetGuidRepository<User>(a => a.Id == 1);
|
||||
var topicRepository = fsql.GetGuidRepository<Topic>(a => a.UserId == 1);
|
||||
```
|
||||
|
||||
* 在查询/修改/删除时附加此条件,从而达到不会修改其他用户的数据;
|
||||
* 在添加时,使用表达式验证数据的合法性,若不合法则抛出异常;
|
||||
|
||||
## 分表与分库
|
||||
|
||||
FreeSql 提供 AsTable 分表的基础方法,GuidRepository 作为分存式仓储将实现了分表与分库(不支持跨服务器分库)的封装。
|
||||
|
||||
```csharp
|
||||
var logRepository = fsql.GetGuidRepository<Log>(null, oldname => $"{oldname}_{DateTime.Now.ToString("YYYYMM")}");
|
||||
```
|
||||
|
||||
上面我们得到一个日志仓储按年月分表,使用它 CURD 最终会操作 Log_201903 表。
|
||||
|
||||
注意事项:
|
||||
|
||||
* v0.11.12以后的版本可以使用 CodeFirst 迁移分表;
|
||||
* 不可在分表分库的实体类型中使用《延时加载》;
|
||||
|
||||
## 兼容问题
|
||||
|
||||
FreeSql 支持多种数据库,分别为 MySql/SqlServer/PostgreSQL/Oracle/Sqlite/达梦/人大金仓/翰高/MsAccess,虽然他们都为关系型数据库,但各自有着独特的技术亮点,有许多亮点值得我们使用;
|
||||
|
||||
比如 SqlServer 提供的 output inserted 特性,在表使用了自增或数据库定义了默认值的时候,使用它可以快速将 insert 的数据返回。PostgreSQL 也有相应的功能,如此方便却不是每个数据库都支持。
|
||||
|
||||
IRepository 接口定义:
|
||||
|
||||
```csharp
|
||||
TEntity Insert(TEntity entity);
|
||||
Task<TEntity> InsertAsync(TEntity entity);
|
||||
```
|
||||
|
||||
于是我们做了两种仓库层实现:
|
||||
|
||||
- BaseRepository 采用 ExecuteInserted 执行;
|
||||
- GuidRepository 采用 ExecuteAffrows 执行(兼容性好);
|
||||
|
||||
当采用了不支持的数据库时(Sqlite/MySql/Oracle),建议:
|
||||
|
||||
* 使用 uuid 作为主键(即 Guid);
|
||||
* 避免使用数据库的默认值功能;
|
||||
* 仓储层实现请使用 GuidRepository;
|
||||
|
||||
## UnitOfWork
|
||||
|
||||
UnitOfWork 可将多个仓储放在一个单元管理执行,最终通用 Commit 执行所有操作,内部采用了数据库事务;
|
||||
|
||||
```csharp
|
||||
using (var uow = fsql.CreateUnitOfWork()) {
|
||||
var songRepo = uow.GetRepository<Song>();
|
||||
var userRepo = uow.GetRepository<User>();
|
||||
|
||||
//上面两个仓储,由同一UnitOfWork uow 创建
|
||||
//在此执行仓储操作
|
||||
|
||||
//这里不受异步方便影响
|
||||
|
||||
uow.Commit();
|
||||
}
|
||||
```
|
||||
|
||||
参考:在 asp.net core 中注入工作单元方法
|
||||
|
||||
```csharp
|
||||
//第一步:
|
||||
public class UnitOfWorkRepository<TEntity, TKey> : BaseRepository<TEntity, TKey>
|
||||
{
|
||||
public UnitOfWorkRepository(IFreeSql fsql, IUnitOfWork uow) : base(fsql, null, null)
|
||||
{
|
||||
this.UnitOfWork = uow;
|
||||
}
|
||||
}
|
||||
public class UnitOfWorkRepository<TEntity> : BaseRepository<TEntity, int>
|
||||
{
|
||||
public UnitOfWorkRepository(IFreeSql fsql, IUnitOfWork uow) : base(fsql, null, null)
|
||||
{
|
||||
this.UnitOfWork = uow;
|
||||
}
|
||||
}
|
||||
|
||||
//第二步:
|
||||
public void ConfigureServices(IServiceCollection services)
|
||||
{
|
||||
services.AddSingleton<IFreeSql>(fsql);
|
||||
services.AddScoped<FreeSql.IUnitOfWork>(sp => fsql.CreateUnitOfWork());
|
||||
|
||||
services.AddScoped(typeof(IReadOnlyRepository<>), typeof(UnitOfWorkRepository<>));
|
||||
services.AddScoped(typeof(IBasicRepository<>), typeof(UnitOfWorkRepository<>));
|
||||
services.AddScoped(typeof(BaseRepository<>), typeof(UnitOfWorkRepository<>));
|
||||
|
||||
services.AddScoped(typeof(IReadOnlyRepository<,>), typeof(UnitOfWorkRepository<,>));
|
||||
services.AddScoped(typeof(IBasicRepository<,>), typeof(UnitOfWorkRepository<,>));
|
||||
services.AddScoped(typeof(BaseRepository<,>), typeof(UnitOfWorkRepository<,>));
|
||||
|
||||
//批量注入程序集内的所有自建仓储类,可以根据自己需要来修改
|
||||
Assembly[] assemblies = new [] { typeof(XxxRepository).Assembly };
|
||||
if (assemblies?.Any() == true)
|
||||
foreach (var asse in assemblies)
|
||||
foreach (var repo in asse.GetTypes().Where(a => a.IsAbstract == false && typeof(UnitOfWorkRepository).IsAssignableFrom(a)))
|
||||
services.AddScoped(repo);
|
||||
}
|
||||
```
|
||||
|
||||
## 联级保存
|
||||
|
||||
请移步文档[《联级保存》](https://github.com/2881099/FreeSql/wiki/%e8%81%94%e7%ba%a7%e4%bf%9d%e5%ad%98)
|
||||
|
||||
## 实体变化事件
|
||||
|
||||
全局设置:
|
||||
|
||||
```csharp
|
||||
fsql.SetDbContextOptions(opt => {
|
||||
opt.OnEntityChange = report => {
|
||||
Console.WriteLine(report);
|
||||
};
|
||||
});
|
||||
```
|
||||
|
||||
单独设置 DbContext 或者 UnitOfWork:
|
||||
|
||||
```csharp
|
||||
var ctx = fsql.CreateDbContext();
|
||||
ctx.Options.OnEntityChange = report => {
|
||||
Console.WriteLine(report);
|
||||
};
|
||||
|
||||
var uow = fsql.CreateUnitOfWork();
|
||||
uow.OnEntityChange = report => {
|
||||
Console.WriteLine(report);
|
||||
};
|
||||
```
|
||||
|
||||
参数 report 是一个 List 集合,集合元素的类型定义如下:
|
||||
|
||||
```csharp
|
||||
public class ChangeInfo
|
||||
{
|
||||
public object Object { get; set; }
|
||||
public EntityChangeType Type { get; set; }
|
||||
}
|
||||
public enum EntityChangeType { Insert, Update, Delete, SqlRaw }
|
||||
```
|
||||
|
||||
| 变化类型 | 说明 |
|
||||
| -- | -- |
|
||||
| Insert | 实体对象被插入 |
|
||||
| Update | 实体对象被更新 |
|
||||
| Delete | 实体对象被删除 |
|
||||
| SqlRaw | 执行了SQL语句 |
|
||||
|
||||
SqlRaw 目前有两处地方比较特殊:
|
||||
- 多对多联级更新导航属性的时候,对中间表的全部删除操作;
|
||||
- 通用仓储类 BaseRepository 有一个 Delete 方法,参数为表达式,而并非实体;
|
||||
```csharp
|
||||
int Delete(Expression<Func<TEntity, bool>> predicate);
|
||||
```
|
||||
|
||||
DbContext.SaveChanges,或者 Repository 对实体的 Insert/Update/Delete,或者 UnitOfWork.Commit 操作都会最多触发一次该事件。
|
Reference in New Issue
Block a user