asp.net-mvc-3 - NHibernate 3.0 单 SessionFactory

Question

现在，我的 session 工厂存在于我的 Controller 中，并且被一遍又一遍地创建。如何创建一个在 Controller 之间共享的 Controller ？

 public class AccountsController : Controller
{
    private static ISessionFactory CreateSessionFactory()
    {
        return Fluently.Configure()
           .Database(MySQLConfiguration.Standard.ConnectionString(
           c => c.FromConnectionStringWithKey("DashboardModels")
       ))
   .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Accounts>())
   .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Notes>())
    .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Sales_Forecast>())
     .Mappings(m => m.FluentMappings.AddFromAssemblyOf<ChangeLog>())
      .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Tasks>())

   .BuildSessionFactory();
    }
    ISessionFactory sessionFactory = CreateSessionFactory();
    ...
    ...

编辑 我已经像这样添加了 SessionController 类:

    public class SessionController : Controller
{
    public HttpSessionStateBase HttpSession
    {
        get { return base.Session; }
    }

    public new ISession Session { get; set; }
}

并创建了一个新的 SessionFactory Utility Class

 public class NHibernateActionFilter : ActionFilterAttribute
{
private static readonly ISessionFactory sessionFactory = BuildSessionFactory();

private static ISessionFactory BuildSessionFactory()
{
    return new Configuration()
        .Configure()
        .BuildSessionFactory();
}

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
    var sessionController = filterContext.Controller as SessionController;

    if (sessionController == null)
        return;

    sessionController.Session = sessionFactory.OpenSession();
    sessionController.Session.BeginTransaction();
}

public override void OnActionExecuted(ActionExecutedContext filterContext)
{
    var sessionController = filterContext.Controller as SessionController;

    if (sessionController == null)
        return;

    using (var session = sessionController.Session)
    {
        if (session == null)
            return;

        if (!session.Transaction.IsActive)
            return;

        if (filterContext.Exception != null)
            session.Transaction.Rollback();
        else
            session.Transaction.Commit();
    }
 }
}

问题/疑虑:使用 FluentNhibernate，我应该如何配置我的新 SessionFactory 类，以及如何在我的 Controller 中创建和使用事务？

Answer 1

您需要将 SessionFactory 设为静态，以便所有 Controller 都使用相同的实例。 Ayende 有一个 good blog post有关如何执行此操作以及如何将操作包装在事务中的示例。

public class SessionController : Controller
{
    public HttpSessionStateBase HttpSession { get { return base.Session; } }
    public new ISession Session { get; set; }
}

//you could put this class in the same physical file as the SessionController.cs 
//since they are tightly coupled to each other
public class NHibernateActionFilter : ActionFilterAttribute
....

然后将您的 AccountController 更改为...

public class AccountsController : SessionController
{
    public ActionResult Index()
    {
         //Session is primed and ready for use
    }
}

最后确保在 global.asax 中注册 Action 过滤器