Object in session

Pawel Pabich · **Posted:** Fri Dec 09, 2005 11:25 pm

hajo,

is it possible to find out if object is associated with any session or not?

thanks in advance for info

Pawel Pabich

s.rottem · **Posted:** Sat Dec 10, 2005 5:29 am

Since the object itself is something that you made it won't know about any session it's associated with unless you explicitly coded in a reference to the session (you can use ILifecycle callbacks to do this if you really want to).

You can find out whether the object is associated with a specific session by asking the session whether it contains the entity. To do this use session.Contains([entity]).

Hope that helps,

Symon.

Pawel Pabich · **Posted:** Sat Dec 10, 2005 9:11 am

Hajo, thanks for response

Yes I know but using hectorcruz's approach in Win Forms:
http://nhibernate.sourceforge.net/forum/viewtopic.php?t=302&postdays=0&postorder=asc&start=15
I get an exception that PersistenCollection can not be assigned to 2 sessions therefore before I call ISession.Lock() I would like to check If collection (bag or set) is or is not associated with any session. I thought that maybe there is some global API like ISessionFactory.IsBoundToSession(object) or something that will allow me to retrive this information. Do you see any workaround?

Pawel Pabich

s.rottem · **Posted:** Sat Dec 10, 2005 10:01 am

Sorry - that was the best I could do!

Symon.

sergey · **Posted:** Mon Dec 12, 2005 9:14 am

Not with "any" session, but you can use ISession.Contains(obj) to find out whether an object is associated with this session. It doesn't work on collections though.

KPixel · **Posted:** Mon Dec 12, 2005 10:26 am

Pawel Pabich wrote:

I thought that maybe there is some global API like ISessionFactory.IsBoundToSession(object) or something that will allow me to retrive this information.

What would you do with this information?

IMO, whenever you have two opened sessions in which you want to use your entities, then something is going wrong...