public Task <bool> DeleteAsync(TSource data)
{
if (data.ID < 1)
{
NiceException.Throw($"待删除数据ID不正确{data.ID}");
}
return(DeleteAsync(data.ID));
}
public Task <TResult> SingleAsync <TResult>(int id, Expression <Func <TSource, TResult> > selector)
{
var res = source.Where(o => o.ID == id).Select(selector).SingleOrDefaultAsync();
if (res == null)
{
NiceException.Throw("404");
}
return(res);
}
//不提供单独的Select,是为了避免业务开发人员不使用Select,直接查询整个模型
//public INiceQueryable<TResult> Select<TResult>(Expression<Func<TSource, TResult>> selector)
//{
// return new NiceQueryable<TResult>(dbcontext,source.Select(selector));
//}
#endregion Select
#region 单条数据查询
public async Task <TResult> SingleAsync <TResult>(Expression <Func <TSource, TResult> > selector)
{
var res = await source.Select(selector).SingleOrDefaultAsync();
if (res == null)
{
NiceException.Throw("404");
}
return(res);
}
