public async Task <GetOrderQueryResponse> Handle(GetOrderQuery query, CancellationToken token)
{
var order = (await repository.Query(x => x.ExternalId == query.OrderId, token))
.SingleOrDefault();
if (order == null)
{
throw EntityNotFoundException.Of <Order>(query.OrderId);
}
var itemIds = order.Items.Select(x => x.ItemId).ToList();
var items = await dbContext.Set <Item>()
.Where(x => itemIds.Contains(x.Id))
.ToDictionaryAsync(k => k.Id, v => v, token);
return(new GetOrderQueryResponse
{
Order = OrderDto.FromEntity(order, items)
});
}