Hi. I downloaded and modified a cms tool called Cuyahoga to suit my needs for a customer of mine.
At this time I wasn't even aware of the tool using NHibernate, but it does.
The problem is that my web host only allows medium trust, while NHibernate seem to require full trust.
I found some posts in the forums about using ILDasm and other tools but none of the descriptions are thorough enough for me to be able to comprehend them, considering I have no prior knowledge of NHibernate, or even how to program for NHibernate. I just want to get the site running on my webhost... :)
I tried to download the 1.2.0 alpha 1 which, according to some forum users, resolve the issue of full trust, but once I have replaced the binaries for
Castle.DynamicProxy.dll
Iesi.Collections.dll
log4net.dll
NHibernate.Caches.SysCache.dll
NHibernate.dll
Nullables.dll
Nullables.NHibernate.dll
nunit.framework.dll
and then successfully recompiled the application, i instead get:

Type 'Cuyahoga.Core.Domain.CustomMenu' cannot be specified as proxy: method get_Id should be virtual
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: NHibernate.InvalidProxyTypeException: Type 'Cuyahoga.Core.Domain.CustomMenu' cannot be specified as proxy: method get_Id should be virtual

Source Error:

Line 90: Configuration config = new Configuration();
Line 91: this._nhibernateConfiguration = config.AddAssembly(this.GetType().Assembly);
Line 92: this._nhibernateFactory = this._nhibernateConfiguration.BuildSessionFactory();
Line 93: }
Line 94: }


Source File: C:\DEV\Projects\Websites\Cuyahoga\Core\Service\SessionFactory.cs Line: 92


This, to me, looks like the implementation in the new version has changed, and is not backwards compatible?

What should I do, Im at a loss here, and Im having a customer getting more and more frustrated...

Any help is greatly appreciated! Sort of desperate here....

Since NHibernate 1.2.0, objects are lazy by default. This requires all public members to be virtual. This can be changed by setting default-lazy="false" in <hibernate-mapping>.

Could you keep us posted with your experiences? I'm very eager to know if things finally will work in a Medium Trust environment.

I try to use version 1.2.0 alpha 1
with objects and Xml maps created by MyGeneration (tried with any template available)

I just run a test project on Visual Studio (not the same topic as "Medium Trsut" posted this far) and got the

Exception Details: NHibernate.InvalidProxyTypeException: Type 'Mylib.xxx' cannot be specified as proxy: method get_Id should be virtual

MyGeneration generates data classes that are sealed, hard to make a method virtual in that case.

how to resolve?

the same classes and hbm work fine with nhibernate-1.0.2.0


guillaume.

I don't know MyGeneration too well, but I can't imagine that there isn't some way to change the templates so that public members are virtual and the classes aren't sealed anymore.

Nhibernate 1.2 changed default value of "lazy" attribute from false to true. Plus, it added sanity check that lazy classes must have only virtual public members.

So, eitrher specify lazy="false" for all class mappings, or make You classes unsealed with only virtual public members.

Gert

What does have the virtual keyword has to do with the lazy loading?

I have my class define like that:

public class MyClass
{

private string _title;
public string Title
{
get;
set;
}
}

does that make MyClass sealed since I didnt declare my property as virtual?
and if so, what's the difference for developper using my class and what's relating this with nhibernate?

Thanks

NHibernate creates dynamically a inherited class, an overrides all virtual members. In those overrides, it checks if the data is loaded or not.

If any of public members is not virtual, the data might remain unloaded if the instance is used.


Sealed is C# keyword:
means that the class can not be inherited from.


If developer uses class, the virtual/non-virtual/selaed should not make difference. If he/she inherits from the class, the usual differences apply. (You can override virtual methods; You can not inherit from sealed class)

Gert

Hey guys -- just moving into using 1.2 myself.

I have been using codesmith to generate my classes and mapping files. I have updated the NHibernate templates for codesmith to generate 1.2 compliant files and also updated them to work with nullable types and uniqueidentifier (GUID) Id's

If you guys want them let me know. I'm not an NHibernate expert by any means and I'd love input on my codesmith template updates. I'm sure they are far from complete..

livesNbox,

Could you send me the NHibernate 1.2 codesmith templates? My email is thinrichs{at}amphire.com

Thanks for your help!

Sure thing.. sending now.. let me know what you think..

if it can help , i'm at the same level as you guys I think , i'm just moving to 1.2 and using the codesmith templates.

At the moment I'm trying to get the bags changed by sets (generic) to have generic collections in my classes.

best!

lives, did you managed to get the generic list in a class to work with set or map ???

thanks? can u send me your templates ? gonna check them out , thanks !

wimvandenbroeck@telenet.be