在NHibernate的视图模式如何实现打开会话? [英] How implement the Open Session in View pattern in NHibernate?
问题描述
我使用ASP.NET MVC + +的NHibernate流利的NHibernate和具有延迟加载的问题。
I'm using ASP.NET MVC + NHibernate + Fluent NHibernate and having a problem with lazy loading.
通过这个问题(http://stackoverflow.com/questions/2519964/how-to-fix-a-nhibernate-lazy-loading-error-no-session-or-session-was-closed),我发现,我要实现在View模式公开会议,但我不知道怎么办。
Through this question (http://stackoverflow.com/questions/2519964/how-to-fix-a-nhibernate-lazy-loading-error-no-session-or-session-was-closed), I've discovered that I have to implement the Open Session in View pattern , but I don't know how.
在我的库类,我用这样的方法
In my repositories classes, I use methods like this
public ImageGallery GetById(int id) {
using(ISession session = NHibernateSessionFactory.OpenSession()) {
return session.Get<ImageGallery>(id);
}
}
public void Add(ImageGallery imageGallery) {
using(ISession session = NHibernateSessionFactory.OpenSession()) {
using(ITransaction transaction = session.BeginTransaction()) {
session.Save(imageGallery);
transaction.Commit();
}
}
}
这是我的会话工厂辅助类:
And this is my Session Factory helper class:
public class NHibernateSessionFactory {
private static ISessionFactory _sessionFactory;
private static ISessionFactory SessionFactory {
get {
if(_sessionFactory == null) {
_sessionFactory = Fluently.Configure()
.Database(MySQLConfiguration.Standard.ConnectionString(MyConnString))
.Mappings(m => m.FluentMappings.AddFromAssemblyOf<ImageGalleryMap>())
.ExposeConfiguration(c => c.Properties.Add("hbm2ddl.keywords", "none"))
.BuildSessionFactory();
}
return _sessionFactory;
}
}
public static ISession OpenSession() {
return SessionFactory.OpenSession();
}
}
有人可以帮助我在View模式来实现打开会话?
Someone could help me to implements Open Session in View pattern?
感谢您。
推荐答案
这是之前已经问过,但我不记得在哪里可以找到它。当你做类似下面的什么的,你有你想要的东西,有些code复制在你的仓库作为奖金减少。
This is already asked before, but I don't remember where to find it. When you do the following or something similar, you have what you want and some code duplication reduce in your repositories as bonus.
- 使用在Global.asax中这(从与答案修改的问题code):
<一href=\"http://stackoverflow.com/questions/2450687/application-endrequest-dosent-fire-on-a-404/2450821\">Application_EndRequest在404 不火 - 使用一个Web请求期间执行每个方法相同的会话和交易实例。
&NBSP;
public class Repository
{
private readonly ISession session;
public Repository()
{
session = CurrentSessionContext.CurrentSession();
}
public ImageGallery GetById(int id)
{
return session.Get<ImageGallery>(id);
}
public void Add(ImageGallery imageGallery)
{
session.Save(imageGallery);
}
}
您也可以使用IoC容器和包装工作,而不是当前会话上下文的单元管理会话。
You can also manage the session with an ioc container and a unit of work wrapper instead of the current session context.
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