public BaseDbContext(DbConnectionEnum connection)
: base(connection.GetMetadata().Value)
{
if (connection == DbConnectionEnum.Undefined)
{
throw new ArgumentNullException(nameof(connection));
}
Configuration.LazyLoadingEnabled = true;
}
/// <summary>
/// 创建数据库连接
/// </summary>
/// <param name="enum">数据库连接枚举</param>
/// <returns></returns>
public IDbConnection CreateConn(DbConnectionEnum @enum = DbConnectionEnum.Default)
{
if (options.Value == null)
{
throw new ArgumentNullException("There's no database connection configuration section registered. Please, register the section in appsettings.json or user secrets.");
}
switch (@enum)
{
case DbConnectionEnum.DefaultRead:
if (string.IsNullOrEmpty(options.Value?.DefaultReadConn))
{
throw new ArgumentNullException("请配置默认数据库连接信息(主要业务库执行读）");
}
return(new SqlConnection(options.Value.DefaultReadConn));
case DbConnectionEnum.SysManage:
if (string.IsNullOrEmpty(options.Value?.SysManageConn))
{
throw new ArgumentNullException("请配置系统管理库连接信息（执行读写）");
}
return(new SqlConnection(options.Value.SysManageConn));
case DbConnectionEnum.CMS:
if (string.IsNullOrEmpty(options.Value?.CMSConn))
{
throw new ArgumentNullException("请配置CMS库连接信息（执行读写）");
}
return(new SqlConnection(options.Value.CMSConn));
default:
if (string.IsNullOrEmpty(options.Value?.DefaultConn))
{
throw new ArgumentNullException("请配置默认连接数据库信息(主要业务库执行读写)");
}
return(new SqlConnection(options.Value.DefaultConn));
}
}
public EntityDbContext(DbConnectionEnum connection) : base(connection)
{
}
