/// <summary>
/// 通过定位器解析上下文
/// </summary>
/// <param name="provider"></param>
/// <param name="dbContextLocator"></param>
/// <returns></returns>
private static DbContext ResolveDbContext(IServiceProvider provider, Type dbContextLocator)
{
// 判断数据库上下文定位器是否绑定
Penetrates.CheckDbContextLocator(dbContextLocator, out var dbContextType);
// 动态解析数据库上下文
var dbContext = provider.GetService(dbContextType) as DbContext;
// 实现动态数据库上下文功能，刷新 OnModelCreating
var dbContextAttribute = DbProvider.GetAppDbContextAttribute(dbContextType);
if (dbContextAttribute?.Mode == DbContextMode.Dynamic)
{
DynamicModelCacheKeyFactory.RebuildModels();
}
// 添加数据库上下文到池中
var dbContextPool = provider.GetService <IDbContextPool>();
dbContextPool?.AddToPool(dbContext);
return(dbContext);
}
/// <summary>
/// 添加数据库上下文
/// </summary>
/// <param name="services">服务集合</param>
/// <param name="configure">配置</param>
/// <param name="migrationAssemblyName">迁移类库名称</param>
/// <returns>服务集合</returns>
public static IServiceCollection AddDatabaseAccessor(this IServiceCollection services, Action <IServiceCollection> configure = null, string migrationAssemblyName = default)
{
// 设置迁移类库名称
if (!string.IsNullOrEmpty(migrationAssemblyName))
{
Db.MigrationAssemblyName = migrationAssemblyName;
}
// 配置数据库上下文
configure?.Invoke(services);
// 注册数据库上下文池
services.TryAddScoped <IDbContextPool, DbContextPool>();
// 注册 Sql 仓储
services.TryAddScoped(typeof(ISqlRepository <>), typeof(SqlRepository <>));
// 注册 Sql 非泛型仓储
services.TryAddScoped <ISqlRepository, SqlRepository>();
// 注册多数据库上下文仓储
services.TryAddScoped(typeof(IRepository <,>), typeof(EFCoreRepository <,>));
// 注册泛型仓储
services.TryAddScoped(typeof(IRepository <>), typeof(EFCoreRepository <>));
// 注册主从库仓储
services.TryAddScoped(typeof(IMSRepository <,>), typeof(MSRepository <,>));
services.TryAddScoped(typeof(IMSRepository <, ,>), typeof(MSRepository <, ,>));
services.TryAddScoped(typeof(IMSRepository <, , ,>), typeof(MSRepository <, , ,>));
services.TryAddScoped(typeof(IMSRepository <, , , ,>), typeof(MSRepository <, , , ,>));
services.TryAddScoped(typeof(IMSRepository <, , , , ,>), typeof(MSRepository <, , , , ,>));
services.TryAddScoped(typeof(IMSRepository <, , , , , ,>), typeof(MSRepository <, , , , , ,>));
services.TryAddScoped(typeof(IMSRepository <, , , , , , ,>), typeof(MSRepository <, , , , , , ,>));
// 注册非泛型仓储
services.TryAddScoped <IRepository, EFCoreRepository>();
// 注册多数据库仓储
services.TryAddScoped(typeof(IDbRepository <>), typeof(DbRepository <>));
// 解析数据库上下文
services.AddTransient(provider =>
{
DbContext dbContextResolve(Type locator, ITransient transient)
{
// 判断定位器是否绑定了数据库上下文
var isRegistered = Penetrates.DbContextWithLocatorCached.TryGetValue(locator, out var dbContextType);
if (!isRegistered)
{
throw new InvalidOperationException("The DbContext for locator binding was not found.");
}
// 动态解析数据库上下文
var dbContext = provider.GetService(dbContextType) as DbContext;
// 实现动态数据库上下文功能，刷新 OnModelCreating
var dbContextAttribute = DbProvider.GetAppDbContextAttribute(dbContextType);
if (dbContextAttribute?.Mode == DbContextMode.Dynamic)
{
DynamicModelCacheKeyFactory.RebuildModels();
}
// 添加数据库上下文到池中
var dbContextPool = App.GetService <IDbContextPool>();
dbContextPool?.AddToPool(dbContext);
return(dbContext);
}
return((Func <Type, ITransient, DbContext>)dbContextResolve);
});
services.AddScoped(provider =>
{
DbContext dbContextResolve(Type locator, IScoped scoped)
{
// 判断定位器是否绑定了数据库上下文
var isRegistered = Penetrates.DbContextWithLocatorCached.TryGetValue(locator, out var dbContextType);
if (!isRegistered)
{
throw new InvalidOperationException("The DbContext for locator binding was not found.");
}
// 动态解析数据库上下文
var dbContext = provider.GetService(dbContextType) as DbContext;
// 实现动态数据库上下文功能，刷新 OnModelCreating
var dbContextAttribute = DbProvider.GetAppDbContextAttribute(dbContextType);
if (dbContextAttribute?.Mode == DbContextMode.Dynamic)
{
DynamicModelCacheKeyFactory.RebuildModels();
}
// 添加数据库上下文到池中
var dbContextPool = App.GetService <IDbContextPool>();
dbContextPool?.AddToPool(dbContext);
return(dbContext);
}
return((Func <Type, IScoped, DbContext>)dbContextResolve);
});
// 注册 Sql 代理接口
services.AddScopedDispatchProxyForInterface <SqlDispatchProxy, ISqlDispatchProxy>();
// 注册全局工作单元过滤器
services.AddMvcFilter <UnitOfWorkFilter>();
return(services);
}