public void Join(CircleJoinCommand command)
{
var circleId = new CircleId(command.CircleId);
var circle = circleRepository.Find(circleId);
var owner = userRepository.Find(circle.Owner);
var members = userRepository.Find(circle.Members);
var circleMembers = new CircleMembers(circle.Id, owner, members);
var circleFullSpec = new CircleMembersFullSpecification();
if (circleFullSpec.IsSatisfiedBy(circleMembers))
{
throw new CircleFullException(circleId);
}
var memberId = new UserId(command.UserId);
var member = userRepository.Find(memberId);
if (member == null)
{
throw new UserNotFoundException(memberId, "사용자를 찾지 못했음");
}
circle.Join(member);
circleRepository.Save(circle);
}
public bool IsSatisfiedBy(CircleMembers members)
{
var premiumNumber = members.CountPremiumMembers(false);
var circleUpperLimit = premiumNumber < 10 ? 30 : 50;
return(members.CountMembers() >= circleUpperLimit);
}
public void Join(CircleJoinCommand command)
{
using var transaction = new TransactionScope();
var circleId = new CircleId(command.CircleId);
var circle = _circleRepository.Find(circleId);
if (circle == null)
{
throw new CircleNotFoundException(circleId, "サークルが見つかりませんでした。");
}
// 複雑な仕様：対処方法その１
// var circleFullSpecification = new CircleFullSpecification(_userRepository);
// if (circleFullSpecification.IsSatisfiedBy(circle))
// {
// throw new CircleFullException(circle.Id);
// }
// 複雑な仕様：対処方法その２
// ファーストコレクションクラスを利用する場合
// ドメインオブジェクトで userRepository を使わずに済む（入出力をドメインオブジェクトから排除できた）
var owner = _userRepository.Find(circle.Owner);
var members = _userRepository.Find(circle.Members);
var circleMembers = new CircleMembers(circle.Id, owner, members);
var circleMembersFullSpecification = new CircleMembersFullSpecification();
if (circleMembersFullSpecification.IsSatisfiedBy(circleMembers))
{
throw new CircleFullException(circleId);
}
var memberId = new UserId(command.UserId);
var member = _userRepository.Find(memberId);
if (member == null)
{
throw new UserNotFoundException(memberId, "ユーザーが見つかりませんでした。");
}
circle.Join(member);
_circleRepository.Save(circle);
transaction.Complete();
}
