让nihbernate会议永远开放？

Question

我正在使用石英和nhibernate并遇到了问题.通常情况下,我的所有nhibernate会话都在Web请求结束时关闭,但是我有一个调度程序在应用程序启动时启动,我需要传入一个我认为永远不应该关闭的nhibernate会话.

我不确定该怎么做.

Ninject

 public class NhibernateSessionFactoryProvider : Provider<ISessionFactory>
    {   
        protected override ISessionFactory CreateInstance(IContext context)
        {
            var sessionFactory = new NhibernateSessionFactory();
            return sessionFactory.GetSessionFactory();
        }
    }

  public class NhibernateModule : NinjectModule
    {
        public override void Load()
        {
            Bind<ISessionFactory>().ToProvider<NhibernateSessionFactoryProvider>().InSingletonScope();
            Bind<ISession>().ToMethod(context => context.Kernel.Get<ISessionFactory>().OpenSession()).InRequestScope();
        }
    }

Global.aspx

  protected void Application_Start()
    {
        // Hook our DI stuff when application starts
        IKernel kernel = SetupDependencyInjection();

        // get the reminder service HERE IS WHERE THE PROBLEMS START
        IScheduledRemindersService scheduledRemindersService = kernel.Get<IScheduledRemindersService>();

        scheduledRemindersService.StartTaskRemindersSchedule();

        RegisterMaps.Register();

        AreaRegistration.RegisterAllAreas();

        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterRoutes(RouteTable.Routes);


    }


    public IKernel SetupDependencyInjection()
    {
        IKernel kernel = CreateKernel();
        // Tell ASP.NET MVC 3 to use our Ninject DI Container
        DependencyResolver.SetResolver(new NinjectDependencyResolver(kernel));

        return kernel;
    }

    protected IKernel CreateKernel()
    {
        var modules = new INinjectModule[]
                          {
                             new NhibernateModule(),
                             new ServiceModule(),
                             new RepoModule()
                          };

        return new StandardKernel(modules);
    }

//导致我出现问题的服务 Ninject将绑定reminderRepo并给它一个nihbernate会话.

private readonly IReminderRepo reminderRepo;
private readonly ISchedulerFactory schedulerFactory;

public ScheduledRemindersService(IReminderRepo reminderRepo)
{
    this.reminderRepo = reminderRepo;
    schedulerFactory = new StdSchedulerFactory();
}

public void StartTaskRemindersSchedule()
{

    IScheduler scheduler = schedulerFactory.GetScheduler();

    scheduler.Start();

    JobDetail jobDetail = new JobDetail("TaskRemindersJob",null,typeof(TaskReminderJob));
    jobDetail.JobDataMap["reminderRepo"] = reminderRepo;

    DateTime evenMinuteDate = TriggerUtils.GetEvenMinuteDate(DateTime.UtcNow);


    SimpleTrigger trigger = new SimpleTrigger("TaskRemindersTrigger", null,
                        DateTime.UtcNow,
                        null,
                        SimpleTrigger.RepeatIndefinitely,
                        TimeSpan.FromMinutes(1));

    scheduler.ScheduleJob(jobDetail, trigger);
}

因此,我需要将提醒Repo传递到上面的工作中

jobDetail.JobDataMap["reminderRepo"] = reminderRepo;

这是你将某些东西传递给工作的唯一方法.每次执行计划时都会重新创建一个作业,我假设它使用了我发送的相同提醒.

我的服务层中的代码永远不会再次执行,当然应用程序也会启动(除非我重新部署该站点)

工作

 public class TaskReminderJob : IJob
    {


        public void Execute(JobExecutionContext context)
        {
            JobDataMap dataMap = context.JobDetail.JobDataMap;
            ReminderRepo reminderRepo = dataMap["reminderRepo"] as ReminderRepo;

            if (context.ScheduledFireTimeUtc.HasValue && context.NextFireTimeUtc.HasValue && reminderRepo != null)
            {
                DateTime start = context.ScheduledFireTimeUtc.Value;
                DateTime end = context.NextFireTimeUtc.Value;

                List<PersonalTaskReminder> personalTaskReminders = reminderRepo.GetPersonalTaskReminders(start, end);

                if (personalTaskReminders.Count > 0)
                {
                    reminderRepo.DeletePersonalTaskReminders(personalTaskReminders.Select(x => x.ReminderId).ToList());


                }

            }
        }

提醒回购.(当这个repo被实例化时,应该给出一个会持续到请求结束的会话)

  public class ReminderRepo : IReminderRepo
    {

        private readonly ISession session;

        public ReminderRepo(ISession session)
        {
            this.session = session;
        }

        public List<PersonalTaskReminder> GetPersonalTaskReminders(DateTime start, DateTime end)
        {
            List<PersonalTaskReminder> personalTaskReminders = session.Query<PersonalTaskReminder>().Where(x => x.DateToBeSent <= start && x.DateToBeSent <= end).ToList();
            return personalTaskReminders;
        }

        public void DeletePersonalTaskReminders(List<int> reminderId)
        {
            const string query = "DELETE FROM PersonalTaskReminder WHERE ReminderId IN (:reminderId)";
            session.CreateQuery(query).SetParameterList("reminderId", reminderId).ExecuteUpdate();
        }


        public void Commit()
        {
            using (ITransaction transaction = session.BeginTransaction())
            {
                transaction.Commit();
            }
        }


    }

所以我需要一些方法让我的提醒保持会话活着.我所有其他回购的所有其他会议应该像我现在一样.只有这一个似乎需要永远活着.

编辑

我试图每次都有一个新的会话,所以我传递了IsessionFactory.可能不是100%最好,但这是我能弄清楚如何获得一些新会议的唯一方法.

但是我不知道我的会话是否仍在通过ninject关闭,因为我现在手动传递会话.我现在想,但无法验证.

 **private readonly ISessionFactory sessionFactory;**
private readonly ISchedulerFactory schedulerFactory;

public ScheduledRemindersService(ISessionFactory sessionFactory)
{
    **this.sessionFactory = sessionFactory;**
    schedulerFactory = new StdSchedulerFactory();
}

public void StartTaskRemindersSchedule()
{

    IScheduler scheduler = schedulerFactory.GetScheduler();

    scheduler.Start();

    JobDetail jobDetail = new JobDetail("TaskRemindersJob",null,typeof(TaskReminderJob));
    **jobDetail.JobDataMap["reminderRepo"] = sessionFactory;**

    DateTime evenMinuteDate = TriggerUtils.GetEvenMinuteDate(DateTime.UtcNow);


    SimpleTrigger trigger = new SimpleTrigger("TaskRemindersTrigger", null,
                        DateTime.UtcNow,
                        null,
                        SimpleTrigger.RepeatIndefinitely,
                        TimeSpan.FromMinutes(1));

    scheduler.ScheduleJob(jobDetail, trigger);
}

所以我的global.aspx是一样的但是因为ninject现在看到"ScheduledRemindersService"现在接受了一个nhibernate会话工厂,它为我绑定一个我可以使用的工具.

然后我把它传递给工作.

public void Execute(JobExecutionContext context)
{
    JobDataMap dataMap = context.JobDetail.JobDataMap;
    ISessionFactory sessionFactory = dataMap["reminderRepo"] as ISessionFactory;

    if (sessionFactory != null)
    {
        ISession openSession = sessionFactory.OpenSession();
        ReminderRepo reminderRepo = new ReminderRepo(openSession);
    }
}

然后我将它传递给我的ReminderRepo所以我猜它忽略了来自ninject的自动会话绑定但是我不是100%肯定因此我不确定我的会话是否被关闭.

Answer 1

有没有理由这项工作不能在每次运行时打开一个新的会话？据推测,它是定期运行而不是永远运行.

永远打开东西通常是遇到奇怪行为的必然方式.

希望这可以帮助.