using FreeSql; using FreeSql.DataAnnotations; using System; using System.Data; using System.Diagnostics; using System.Linq.Expressions; using System.Threading; using System.Threading.Tasks; /// /// 包括 CreateTime/UpdateTime/IsDeleted、CRUD 方法、以及 ID 主键定义 的实体基类 /// /// 当 TKey 为 int/long 时,Id 主键被设为自增值主键 /// /// /// [Table(DisableSyncStructure = true)] public abstract class BaseEntity : BaseEntity where TEntity : class { static BaseEntity() { var tkeyType = typeof(TKey)?.NullableTypeOrThis(); if (tkeyType == typeof(int) || tkeyType == typeof(long)) Orm.CodeFirst.ConfigEntity(typeof(TEntity), t => t.Property("Id").IsIdentity(true)); } /// /// 主键 /// public virtual TKey Id { get; set; } /// /// 根据主键值获取数据 /// /// /// async public static Task FindAsync(TKey id) { var item = await Select.WhereDynamic(id).FirstAsync(); (item as BaseEntity)?.Attach(); return item; } /// /// 根据主键值获取数据 /// /// /// public static TEntity Find(TKey id) { var item = Select.WhereDynamic(id).First(); (item as BaseEntity)?.Attach(); return item; } }