public Task <AsyncTaskResult> HandleAsync(GoodsParamsUpdatedEvent evnt)
{
return(TryTransactionAsync(async(connection, transaction) =>
{
var effectedRows = await connection.UpdateAsync(new
{
Version = evnt.Version,
EventSequence = evnt.Sequence
}, new
{
Id = evnt.AggregateRootId,
//Version = evnt.Version - 1
}, ConfigSettings.GoodsTable, transaction);
if (effectedRows == 1)
{
var tasks = new List <Task>();
//删除原来的参数记录
tasks.Add(connection.DeleteAsync(new
{
GoodsId = evnt.AggregateRootId
}, ConfigSettings.GoodsParamTable, transaction));
//插入新的参数记录
foreach (var goodsParam in evnt.GoodsParams)
{
tasks.Add(connection.InsertAsync(new
{
Id = GuidUtil.NewSequentialId(),
GoodsId = evnt.AggregateRootId,
Name = goodsParam.Name,
Value = goodsParam.Value
}, ConfigSettings.GoodsParamTable, transaction));
}
Task.WaitAll(tasks.ToArray());
}
}));
}
private void Handle(GoodsParamsUpdatedEvent evnt)
{
_goodsParams = evnt.GoodsParams;
}