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http://www.hibernate.org/ForumMailingli ... AskForHelp

Mapping documents:
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="NHibernate.Examples.QuickStart2.User, QuickStart2" table="users">
<id name="Id" column="LogonId" type="String" length="20">
<generator class="assigned" />
</id>
<property name="UserName" column="Name" type="String" length="40"/>
<property name="Password" type="String" length="20"/>
<property name="EmailAddress" type="String" length="40"/>
<property name="LastLogon" type="DateTime"/>
</class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():

Configuration cfg = new Configuration();
try
{
cfg.AddXmlFile(@"C:\SSWF\RequirementsContentManagement\Test\QuickStart2\QuickStart2\User.hbm.xml");
}
catch (Exception ex)
{
}
ISessionFactory factory = cfg.BuildSessionFactory();
ISession session = factory.OpenSession();
ITransaction transaction = session.BeginTransaction();

User newUser = new User();
newUser.Id = "Joe_cool";
newUser.Username = "Joseph Cool";
newUser.Password = "secret";
newUser.EmailAdresses = "joe@joe.com";
newUser.LastLogon = DateTime.Now;

session.Save(newUser);

transaction.Commit();
session.Close();

Full stack trace of any exception that occurs:
NHibernate.HibernateException was unhandled
Message="The hibernate.connection.driver_class must be specified in the NHibernate configuration section."
Source="NHibernate"
StackTrace:
at NHibernate.Connection.ConnectionProvider.ConfigureDriver(IDictionary settings)
at NHibernate.Connection.UserSuppliedConnectionProvider.Configure(IDictionary settings)
at NHibernate.Connection.ConnectionProviderFactory.NewConnectionProvider(IDictionary settings)
at NHibernate.Cfg.SettingsFactory.BuildSettings(IDictionary properties)
at NHibernate.Cfg.Configuration.BuildSettings()
at NHibernate.Cfg.Configuration.BuildSessionFactory()
at NHibernate.Examples.QuickStart2.queryObjects.query() in C:\SSWF\RequirementsContentManagement\Test\QuickStart2\QuickStart2\queryObjects.cs:line 22
at NHibernate.Examples.QuickStart2.Form1.button1_Click(Object sender, EventArgs e) in C:\SSWF\RequirementsContentManagement\Test\QuickStart2\QuickStart2\Form1.cs:line 21
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at NHibernate.Examples.QuickStart2.Program.Main() in C:\SSWF\RequirementsContentManagement\Test\QuickStart2\QuickStart2\Program.cs:line 17
at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()



Name and version of the database you are using:
MSSQL 2000



Problems with Session and transaction handling?

Read this: http://hibernate.org/42.html


Hi,
I am following this tutorial: http://www.hibernate.org/362.html
But I get an error when I try to create the ISessionFactory. It complains about the hibernate.connection.driver_class is not specified in the NHibernate configuration section. I have created the config file and named it app.config. Do I need to do anything else to explain .net that it is my config file?

The quick start guide is somewhat out dated. Please have a look at the reference doc here instead for set up of the config section:
http://www.hibernate.org/hib_docs/nhibe ... tart-intro

I will put it on my to-do list to update the guide.

Here is my config file template. Note, some of the things specified are defaulted already by nhibernate, but it's nice to have them called out in order to be able to control them later (proxy_validator for instance)

<configuration>
<configSections>
<section name="hibernate-configuration"
type="NHibernate.Cfg.ConfigurationSectionHandler,
NHibernate" />
</configSections>

<hibernate-configuration xmlns="urn:nhibernate-configuration-2.0">
<session-factory>
<property name="hibernate.dialect">
NHibernate.Dialect.MsSql2000Dialect
</property>
<property name="hibernate.default_schema">
{database}.{schema} <!--eg Northwinds.dbo -->
</property>
<property name="hibernate.connection.provider">
NHibernate.Connection.DriverConnectionProvider
</property>
<property name="hibernate.connection.connection_string">
{ConnectionString}
</property>
<property name="hibernate.show_sql">
true
</property>
<property name="hibernate.connection.driver_class">
NHibernate.Driver.SqlClientDriver
</property>
<property name="hibernate.connection.isolation">
ReadCommitted
</property>
<property name="hibernate.use_proxy_validator">
True
</property>

<mapping assembly="{assembly name}" />
</session-factory>
</hibernate-configuration>
</configuration>

If all of your mapping files are stored in one assembly, then you can specify that assembly in the config file.

I then configure my session factory like this:

sessionFactory = new Configuration().Configure().BuildSessionFactory();