public async Task ModifyAppStarAsync(Int32 userId, Int32 appId, Int32 starCount)
{
Check.IfNullOrZero(userId);
Check.IfNullOrZero(appId);
Check.IfNullOrZero(starCount);
await Task.Run(() =>
{
using var mapper = EntityMapper.CreateMapper();
try
{
#region 前置条件判断
{
var result = mapper.Query <AppStar>().Where(a => a.UserId == userId && a.AppId == appId).Count();
if (result > 0)
{
throw new BusinessException("您已为这个应用打分");
}
}
#endregion
#region sql
{
var appStar = new AppStar(userId, appId, starCount);
mapper.Add(appStar);
}
#endregion
}
catch (System.Exception)
{
throw;
}
});
}
public async Task RemoveAppAsync(Int32 appId)
{
Check.IfNullOrZero(appId);
await Task.Run(() =>
{
using var mapper = EntityMapper.CreateMapper();
mapper.OpenTransaction();
try
{
#region 移除应用的评分
{
var appStar = new AppStar();
appStar.Remove();
var result = mapper.Update(appStar, star => star.AppId == appId);
if (!result)
{
throw new BusinessException("移除应用的评分失败");
}
}
#endregion
#region 移除应用
{
var app = new App();
app.Remove();
var result = mapper.Update(app, a => a.Id == appId);
if (!result)
{
throw new BusinessException("移除应用失败");
}
}
#endregion
mapper.Commit();
}
catch (Exception)
{
mapper.Rollback();
throw;
}
});
}