Hi all!
I am having a question which is not directly related to nHibernate/Hibernate, but since i figure that the probability is very high, that somebody here has already run into the same problem, i decided to ask it here :)
I am having a 3-layered Web-application, whereas i am using ASP.NET in the presentation-layer, having all my logic in the business-layer, and my DAO's using nHibernate in the persistence-layer.
My current problem is, that i am having a long-running task (>1.5h) which i need to move from my business-layer into an external command-line application (this task is blocking the website for the time it is running, due to this, and the fact that ASP.NET was not designed for such long running tasks, i need to move it).
Now, my idea was:
Create a command-line application, which simply loads my business- and persistence-assemblies, and subsequently starts the long-running method in my business-layer.
Now here's what i am not sure about:
All the methods in my persistence-layer are using a method "GetCurrentSession" of my nHibernateHelper-Class (many of you may use one or another version of this one, floating around on the internet), which means that my upper-layers have no control over what is actually the "current session".
Relevant parts of this class look like this:
Code:
public static ISession GetCurrentSession() {
ISession currentSession = ContextSession;
try {
if (currentSession == null)
if (IsInWebContext()) {
currentSession = sessionFactories[HttpContext.Current.Session["currentDB"].ToString()].OpenSession();
} else {
currentSession = sessionFactories[currentDB].OpenSession(); ;
}//else
ContextSession = currentSession;
return currentSession;
} catch (HibernateException) {
throw;
}//catch
}//GetCurrentSession
private static ISession ContextSession {
get {
if (IsInWebContext()) {
return (HttpContext.Current.Items[NHIBERNATE_SESSION_KEY] as ISession);
}//if
//We are not in a Web-context, return our static session...
return session;
}//get
set {
if (IsInWebContext())
HttpContext.Current.Items[NHIBERNATE_SESSION_KEY] = value;
else
session = value;
}//set
}//ContextSession
private static bool IsInWebContext() {
return HttpContext.Current != null;
}//IsInWebContext
As you can see: If it is determined, that a web-app is requesting the session, i create one and store it in the context of the web-app, if not then i am returning a static session that is stored within the class.
Now the question is: If, a web-app _and_ my command-line app are requesting a session at the same time (calling GetCurrentSession at the same time), will the current implementation ensure, that the web-app thread will get its session stored in its context, and the command-line app will get the static session?
Sorry for the long introduction on this, i just wanted to make clear my motivation for all this :) Is anybody here running a similar setup and can provide any hints on this?
regards,
--qu
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