private void When(object @event)
{
switch (@event)
{
case Events.CityCreated e:
Id = new CityId(e.Id);
Name = e.Name;
break;
case Events.CityNameChanged e:
Name = e.Name;
break;
case Events.CityDeleted e:
Id = new CityId(e.Id);
Name = e.Name;
break;
}
}
public static City Create(CityId id, string name)
{
if (id is null)
{
throw new ArgumentNullException(nameof(id), "City without unique identifier cannot be created.");
}
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException(nameof(name), "City without name cannot be created.");
}
var city = new City();
city.Apply(new Events.CityCreated
{
Id = id,
Name = name
});
return(city);
}
