예제 #1
0
 public void UpdateInventory()
 {
     foreach (var cmd in context.GetPartCommands())
     {
         var item = context.Inventory.Single(i =>
                                             i.PartTypeId == cmd.PartTypeId);
         var oldCount = item.Count;
         if (cmd.Command == PartCountOperation.Add)
         {
             item.Count += cmd.PartCount;
         }
         else
         {
             item.Count -= cmd.PartCount;
         }
         var transaction = context.BeginTransaction();
         try
         {
             context.UpdateInventoryItem(item.PartTypeId,
                                         item.Count, transaction);
             context.DeletePartCommand(cmd.Id, transaction);
             transaction.Commit();
         }
         catch
         {
             transaction.Rollback();
             item.Count = oldCount;
             throw;
         }
     }
 }
예제 #2
0
        public async Task UpdateInventory()
        {
            foreach (var cmd in await _context.GetPartCommands())
            {
                var item     = _context.Inventory.Single(i => i.PartTypeId == cmd.PartTypeId);
                var oldCount = item.Count;

                if (cmd.Command == PartCountOperation.Add)
                {
                    item.Count += cmd.PartCount;
                }
                else
                {
                    item.Count -= cmd.PartCount;
                }

                using (var transaction = _context.BeginTransaction())
                {
                    try
                    {
                        await _context.UpdateInventoryItem(item.PartTypeId, item.Count, transaction);

                        await _context.DeletePartCommand(cmd.Id, transaction);

                        transaction.Commit();
                    }
                    catch
                    {
                        transaction.Rollback();
                        item.Count = oldCount;
                        throw;
                    }
                }
            }

            var orders = await _context.GetOrders();

            foreach (var item in _context.Inventory)
            {
                if (item.Count < item.OrderThreshold &&
                    orders.FirstOrDefault(o => o.PartTypeId == item.PartTypeId && !o.FulfilledDate.HasValue) == null)
                {
                    await OrderPart(item.PartType, item.OrderThreshold);
                }
            }
        }