protected override IAsyncResult BeginExecute(
AsyncCodeActivityContext context,
AsyncCallback callback, object state)
{
InventoryLookupAsyncArgs parameters = new InventoryLookupAsyncArgs
{
ItemId = ItemId.Get(context),
WarehouseId = WarehouseId.Get(context),
RequestedQty = RequestedQty.Get(context),
};
Func <InventoryLookupAsyncArgs, Int32> asyncWork =
args => Lookup(args);
context.UserState = asyncWork;
return(asyncWork.BeginInvoke(parameters, callback, state));
}
protected override int Execute(CodeActivityContext context)
{
Int32 availableInventory = 0;
Int32 warehouseId = WarehouseId.Get(context);
Dictionary <Int32, Int32> warehouse = null;
if (_warehouses.TryGetValue(warehouseId, out warehouse))
{
Int32 itemId = ItemId.Get(context);
if (warehouse.TryGetValue(itemId, out availableInventory))
{
Int32 requestedQty = RequestedQty.Get(context);
if (availableInventory > requestedQty)
{
availableInventory = requestedQty;
}
}
}
return(availableInventory);
}
