public void Apply(AccountingMonthOpened @event)
{
Id = @event.FinancialAccountId;
CurrentMonth = @event.Month;
CurrentYear = @event.Year;
Balance = @event.StartingBalance;
IsOpened = true;
Version++;
}
public async Task AggregatingStreamIntoShouldUseState()
{
var financialAccountId = Guid.NewGuid();
await AppendEvent(
financialAccountId,
new AccountingMonthOpened(financialAccountId, 10, 2021, 0),
new InflowRecorded(financialAccountId, 100),
new InflowRecorded(financialAccountId, 100),
new InflowRecorded(financialAccountId, 100),
new AccountingMonthClosed(financialAccountId, 10, 2021, 300)
);
#region sample_aggregate-stream-into-state-store
(FinancialAccount, AccountingMonthOpened) OpenAccountingMonth(
FinancialAccount cashRegister)
{
var @event = new AccountingMonthOpened(
cashRegister.Id, 11, 2021, 300);
cashRegister.Apply(@event);
return(cashRegister, @event);
}
var closedCashierShift =
await theSession.Events.AggregateStreamAsync <FinancialAccount>(
financialAccountId
);
var(openedCashierShift, cashierShiftOpened) =
OpenAccountingMonth(closedCashierShift !);
var repository = new CashRegisterRepository(_session);
await repository.Store(openedCashierShift, cashierShiftOpened);
#endregion
var snapshot = await theSession.LoadAsync <FinancialAccount>(financialAccountId);
snapshot.ShouldNotBeNull();
snapshot.Id.ShouldBe(financialAccountId);
snapshot.CurrentMonth.ShouldBe(11);
snapshot.CurrentYear.ShouldBe(2021);
snapshot.Balance.ShouldBe(300);
snapshot.IsOpened.ShouldBeTrue();
snapshot.Version.ShouldBe(openedCashierShift.Version);
await AppendEvent(
financialAccountId,
new InflowRecorded(financialAccountId, 100),
new InflowRecorded(financialAccountId, 100),
new InflowRecorded(financialAccountId, 100)
);
#region sample_aggregate-stream-into-state-get
var currentState = await repository.Get(financialAccountId);
#endregion
currentState.ShouldNotBeNull();
currentState.Id.ShouldBe(financialAccountId);
snapshot.CurrentMonth.ShouldBe(11);
snapshot.CurrentYear.ShouldBe(2021);
currentState.Balance.ShouldBe(600);
currentState.IsOpened.ShouldBeTrue();
currentState.Version.ShouldBe(openedCashierShift.Version + 3);
}