Working with multiple classes

highjo · **Joined:** Mon Mar 30, 2009 2:47 pm **Posts:** 15

hello! on my way to nhibernate i finished studying basic tutorial for introduction to it.Now i'm about to try a project with 3 tables/classes (let's not tald about mapping for now) currency| country | denomination.The challenge and what is confusing is the part of building a session.In fact i have a static function that return the session.

Code:

class NHibernateHelper
    {
        private static ISessionFactory _isessionFactory;

        private static ISessionFactory SessionFactory
        {
            get
            {
                if (_isessionFactory == null)
                {
                    Configuration cfg = new Configuration().Configure().AddAssembly(typeof(Currency).Assembly);
                    _isessionFactory = cfg.BuildSessionFactory();
                }
                return _isessionFactory;
            }
            set { _isessionFactory = value; }
        }


        public static ISession OpenSession()
        {
            return SessionFactory.OpenSession();
        }
    }

i've read on the documentation

Quote:

Another alternative (probably the best) way is to let NHibernate load all of the mapping files contained in an Assembly:
Configuration cfg = new Configuration()
.AddAssembly( "NHibernate.Auction" );

would that mean that i dont' have to add classes like Country and Denomination as in

Code:

Configuration cfg = new Configuration().Configure().AddAssembly(typeof(Currency).Assembly)
.AddAssembly(typeof(Country).Assembly)
.AddAssembly(typeof(Denomination).Assembly);

am i in the wrong path?thanks for reading this

Ahmed Emad · **Joined:** Sun Apr 05, 2009 8:00 am **Posts:** 8

As i understood your problem , the answer is Yes
but don't forget to add the assembly in the project assemblies

Ahmed Emad · **Joined:** Sun Apr 05, 2009 8:00 am **Posts:** 8

you can do that too:

Code:

ISessionFactory sessionFactory = new Configuration()
.Configure()
.AddXmlFile("Currency.hbm.xml")
.AddXmlFile("Country.hbm.xml")
.AddXmlFile("Denomination.hbm.xml")
.BuildSessionFactory();

the 3 ways are right u can choose the most suitable for u.

highjo · **Joined:** Mon Mar 30, 2009 2:47 pm **Posts:** 15

Common guys please point me to the right path.Please! Sorry that 's from my connection

Ahmed Emad · **Joined:** Sun Apr 05, 2009 8:00 am **Posts:** 8

doesn't my reply help?!

highjo · **Joined:** Mon Mar 30, 2009 2:47 pm **Posts:** 15

sorry i was desconnected.i did it and it works.I did try AddClass() :) thanks for the reply

highjo · **Joined:** Mon Mar 30, 2009 2:47 pm **Posts:** 15

actually something is wrong it's publishing the table alright but the unit testing can_add_country failed.

Also is there a simple way to have a thread safe session.I mean simple because i've read the sharp Architecture of Billy McCaferty and i didn't understand it.i guess for now it's too advanced for me.

wolli · **Posted:** Wed Apr 15, 2009 12:13 pm

I suggest you start some basic reading about nhibernate:

http://nhforge.org/wikis/howtonh/your-first-nhibernate-based-application.aspx

http://www.manning.com/kuate/

reflection · **Joined:** Wed Feb 11, 2009 10:58 am **Posts:** 55

Don't forget to set your hbm.xml files to embedded resource. Works like a charm for me :)

If you have got a Windows Forms Application and want to keep it simple just create one Session and use it throughout the whole program lifecycle (use a Singleton or something)

highjo · **Joined:** Mon Mar 30, 2009 2:47 pm **Posts:** 15

alright sounds interresting for me.will give a try and let you guys know.thanks