private void Execute(ChangeCustomer command)
{
var customer = _aggregateEventStore.GetAggregate <Customer>(command.Id);
customer.Change(command.Name);
_aggregateEventStore.Save(customer);
}
//out service methods should accept commands as arguments
public void Update(ChangeCustomer command)
{
var customer = context.Find <Customer>(command.id);
//since we have a custom command processing which recognizes the specific exception
//we can turn it into a user friendly error
if (customer == null)
{
throw new CustomException($"Invalid customer id: {customer.id}");
}
//and leave a trail of events for the relevant changes
var mobileChanged = CheckMobileChanged(customer, command.mobile);
var passportChanged = CheckPassportChanged(customer, command.documents);
ApplyChanges(customer, command);
//since current context works directly on the DB, let's optimize it by avoiding work if we don't need to
if (command.GetValidationErrors().Count == 0)
{
context.Update(customer);
if (mobileChanged != null)
{
context.Submit(mobileChanged);
}
if (passportChanged != null)
{
context.Submit(passportChanged);
}
}
}
public void ShowChangeCustomerWindow(Customer customer)
{
ChangeCustomer cc = new ChangeCustomer();
cc.CustomerToChange = customer;
cc.Show();
}
public void Handle(ChangeCustomer command)
{
service.Update(command);
}
