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Latest version breaking changes....

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MikeB

Post subject: Latest version breaking changes....

Posted: Thu Aug 14, 2008 6:23 pm

Beginner

Joined: Mon Feb 04, 2008 7:36 pm
Posts: 31

Hibernate version:
2.1.0 alpha1

I need some help figuring out some changes between 1.2.1 and 2.1.0

Question 1:
I used to do this:

Code:

LazyInitializer li = NHibernateProxyHelper.GetLazyInitializer((INHibernateProxy)item);

The GetLazyInitializer method is now gone, how do I initialize a proxy now?

Question 2:
To handle partial collections and unitialized collections I used to do this:

Code:

        
        /// <summary>
        /// Explicitly sets the collection to initialized without going to the 
        /// database, this can be hazerdous because it tells nHibernate that 
        /// the collection as it sits is fully loaded.
        /// </summary>
        public virtual void ManualInitialize()
        {
            try
            {
                if (!(this.WasInitialized))
                {
                    this.SetInitialized();
                    bag = new K();

                    this.Session.GetSessionImplementation()
                           .GetCollectionEntry(this)
                                .InitSnapshot(this, Session.GetSessionImplementation().GetCollectionEntry(this).LoadedPersister);

                    this._WasManuallyInitialized = true;
                }
            }
            catch (Exception)
            {

                throw;
            }

this whole process seems to have changed, how can I fool the framework into thinking the collection is valid?

I go this far:
this.Session.PersistenceContext.GetCollectionEntry(this)

however, the InitSnapshot is gone along with the AddCollection methods from sessionimpl where or how is this done?

Question 3:
What happened to the ISessionFactory.ConnectionProvider? I used to reflect into it to get the connection string is there a different/better way to accomplish this now?

I realize that 2.1.0 is a bleeding edge build but I need some functionality that is in there so hopefully all these things can accomplished.

Question 4:
I noticed this:

Code:

public class SchemaUpdate

Does this do what it implies and does it actually function??? That would be like Christmas :)

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MikeB

Post subject:

Posted: Mon Aug 18, 2008 4:55 pm

Beginner

Joined: Mon Feb 04, 2008 7:36 pm
Posts: 31

Anyone have any ideas here?

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MikeB

Post subject:

Posted: Wed Aug 20, 2008 10:50 pm

Beginner

Joined: Mon Feb 04, 2008 7:36 pm
Posts: 31

I have found the answer to part of this:

Quote:

Question 1:
I used to do this:

LazyInitializer li = NHibernateProxyHelper.GetLazyInitializer((INHibernateProxy)item);

Code:

if ([instance].[Property] is INHibernateProxy)
{
     ILazyInitializer init = ((INHibernateProxy)[instance].[Property]).HibernateLazyInitializer;

     if (init.IsUninitialized) 
          return null;
     else 
          reuturn ([Class Type])init.GetImplementation();
}

obviously, [instance] [property] and [Class Type] need to be replaced with the apprpriate code.

You can also call:

Code:

session.GetSessionImplementation().PersistenceContext.Unproxy(object);

However, it requires that you do this in the session and be aware that if the proxy is not initialized it will throw an exception.

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MikeB

Post subject:

Posted: Fri Aug 22, 2008 6:32 pm

Beginner

Joined: Mon Feb 04, 2008 7:36 pm
Posts: 31

Quote:

Question 3:
What happened to the ISessionFactory.ConnectionProvider? I used to reflect into it to get the connection string is there a different/better way to accomplish this now?

Okay, answering another one. You have to cast the SessionFactory (assuming you are using the stock session factory) to a ISessionFactoryImplementor, then you can get to the property ConnectionProvider.

In my case the _Factory is a singleton of type ISessionFactory

Code:

private static string GetConnectionString()
{

     if (_Factory != null)
     {
           Type typeOfConnectionProvider = typeof(NHibernate.Connection.DriverConnectionProvider);
           PropertyInfo ConnectionStringPropertyInfo = typeOfConnectionProvider.GetProperty(
                "ConnectionString", 
                BindingFlags.Instance | BindingFlags.NonPublic);
          string connectionString = (string)ConnectionStringPropertyInfo.GetValue(((ISessionFactoryImplementor)_Factory).ConnectionProvider, null);
          return connectionString;
     }
     else
          return null;

}

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MikeB

Post subject:

Posted: Sat Aug 23, 2008 5:14 pm

Beginner

Joined: Mon Feb 04, 2008 7:36 pm
Posts: 31

Quote:

Question 2:
To handle partial collections and unitialized collections I used to do this:

Another answer:

Code:

        public virtual void ManualInitialize()
        {
            try
            {
                if (!(this.WasInitialized))
                {
                    this.SetInitialized();
                    InternalCollection = new K();

                    this.Session.PersistenceContext
                           .GetCollectionEntry(this).PostInitialize(this);
                              
                    this._WasManuallyInitialized = true;
                }
            }
            catch (Exception)
            {

                throw;
            }
        }

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