一直有自己写个框架的想法,但是一直没有行动起来,最近比较闲,正好可以开工了.
现在已经完成了两部分.1.一个简单仓储,实现使用的是ef 2.IOC部分,这里是把内置的ioc替换成了aotofac,这部分感觉还是有一点缺陷的.下面说
仓储部分
这里主要是接口是实现,目前使用ef实现了仓储的接口.看一下代码
public interface IRepositorywhere TEntity : class { #region Select/Get/Query IQueryable GetAll(); IQueryable GetAllIncluding(params Expression >[] propertySelectors); List GetAllList(); Task > GetAllListAsync(); List
GetAllList(Expression > predicate); Task > GetAllListAsync(Expression
> predicate); T Query (Func , T> queryMethod); TEntity Get(TPrimaryKey id); Task GetAsync(TPrimaryKey id); TEntity Single(Expression > predicate); Task SingleAsync(Expression > predicate); TEntity FirstOrDefault(TPrimaryKey id); Task FirstOrDefaultAsync(TPrimaryKey id); TEntity FirstOrDefault(Expression > predicate); Task FirstOrDefaultAsync(Expression > predicate); TEntity Load(TPrimaryKey id); #endregion #region Insert TEntity Insert(TEntity entity); Task InsertAsync(TEntity entity); #endregion #region Update TEntity Update(TEntity entity); Task UpdateAsync(TEntity entity); TEntity Update(TPrimaryKey id, Action updateAction); Task UpdateAsync(TPrimaryKey id, Func updateAction); #endregion #region Delete void Delete(TEntity entity); Task DeleteAsync(TEntity entity); void Delete(TPrimaryKey id); Task DeleteAsync(TPrimaryKey id); void Delete(Expression > predicate); Task DeleteAsync(Expression > predicate); #endregion #region Aggregates int Count(); Task CountAsync(); int Count(Expression > predicate); Task CountAsync(Expression > predicate); long LongCount(); Task LongCountAsync(); long LongCount(Expression > predicate); Task LongCountAsync(Expression > predicate); #endregion }
下面是实现的部分代码,代码比较占版面,就不贴全了.
public abstract class RepositoryBase: IRepository where TEntity : class { public abstract IQueryable GetAll(); public abstract IQueryable GetAllIncluding(params Expression >[] propertySelectors); public virtual List GetAllList() { return GetAll().ToList(); } public virtual async Task > GetAllListAsync() { return await Task.FromResult(GetAllList()); } }
public class EfRepositoryBase: RepositoryBase where TEntity : class where TDbContext : DbContext { public virtual TDbContext Context { private set; get; } public virtual DbSet Table => Context.Set (); public EfRepositoryBase(TDbContext context) { Context = context; } public override IQueryable GetAll() { return Table; } public override IQueryable GetAllIncluding(params Expression >[] propertySelectors) { if (propertySelectors == null) { return GetAll(); } var linq = GetAll(); foreach (var item in propertySelectors) { linq = linq.Include(item); } return linq; } }
注意看EfRepositoryBase继承了RepositoryBase,而RepositoryBase实现了IRepository.这里的RepositoryBase是所有实现的基类.GetAllList虚方法直接调用了抽象方法GetAll,这样在EfRepositoryBase中就可以减少很多代码了.
这里有个坑 EfRepositoryBase 是不能直接注册到IOC中的,因为EfRepositoryBase和IRepository的泛型参数个数不一致,ioc不能找到多出的一个泛型的值.使用仓储的时候继承EfRepositoryBase把dbcontext传进去就好了
public class TestRepository: EfRepositoryBase where TEntity : class { public TestRepository(TestContext context) : base(context) { } }
IOC部分
asp.net core 微软提供了一个简单的IOC,但是接口比较少,替换成我们熟悉的ioc框架就方便多了. asp.net core 也有很方便的替换ioc的方法.简单说就是修改ConfigureServices方法的返回值为IServiceProvider.我使用了autofac,下面看代码.
public IServiceProvider ConfigureServices(IServiceCollection services)
{
services.AddMvc();
return services.AddLuna();
}
public static IServiceProvider AddLuna([NotNull]this IServiceCollection services)
where TModule : IModule, new()
{
var builder = new ContainerBuilder();
builder.Populate(services);
builder.RegisterModule();
return new AutofacServiceProvider(builder.Build());
}
public class AutofacModule : Module
{
protected override void Load(ContainerBuilder builder)
{
builder.RegisterType();
builder.RegisterGeneric(typeof(TestRepository<,>)).As(typeof(IRepository<,>))
.InstancePerLifetimeScope();
}
} 这里的Module和IModule是autofac的,功能已经实现了,但是作为框架来说直接暴露了autofac的东西显然是不合适的,下一步要实现一个框架自身的模块加载方式.
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