Hi Friends,
I am new to the N hibernate and ORM. I have done sample application using N hibernate with the use of N hibernate in action material, But it shows me an Exception as "Could not compile the mapping document: HelloWorldNHibernate.Employee.hbm.xml" . I set the mapping xml file Build Action property as Embedded resource. Could you please clarify me whats wrong with this.

XML File As:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true">
<class name="NHibernateSample.Employee, NHibernateSample" lazy="false">
<id name="id" access="field">
<generator class="assigned" />
</id>
<property name="name" access="field" column="name"/>
<many-to-one access="field" name="manager" column="manager" cascade="all"/>
</class>
</hibernate-mapping>

Mapped Class:

class Employee
{
public int id;
public string name;
public Employee manager;

public string SayHello()
{
return string.Format(
"'Hello World!', said {0}.", name);
}
}

What does the inner exception say ? There seem to be an error in your XML.

Hi,
My inner Exception Says "Could not find the dialect in the configuration".

Thanks for your response...

In that case something with your hibernate configuration is wrong. Can you post your config file and the code where you build the session factory ?

Hi,
My Class file is,

static void Main()
{
CreateEmployeeAndSaveToDatabase();
Console.WriteLine("Press any key to exit...");

}

static void CreateEmployeeAndSaveToDatabase()
{
HelloWorldNHibernate.Employee tobin = new HelloWorldNHibernate.Employee();
tobin.name = "Tobin Harris";
using (ISession session = OpenSession())
{
using (ITransaction transaction = session.BeginTransaction())
{
session.Save(tobin);
transaction.Commit();
}
Console.WriteLine("Saved Tobin to the database");
}
}

static ISession OpenSession()
{
Configuration c = new Configuration();
c.AddAssembly(Assembly.GetCallingAssembly());
ISessionFactory f = c.BuildSessionFactory();
return f.OpenSession();
}

and my xml Config file :

<?xml version="1.0"?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true">
<class name="HelloWorldNHibernate.Employee, HelloWorldNHibernate" lazy="false">
<id name="id" access="field">
<generator class="native" />
</id>
<property name="name" access="field" column="name"/>
<many-to-one access="field" name="manager" column="manager" cascade="all"/>
</class>
</hibernate-mapping>


And App.config File :

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System,
Version=1.0.3300.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" />
</configSections>
<nhibernate>
<add key="hibernate.show_sql"
value="false" />
<add key="hibernate.connection.provider"
value="NHibernate.Connection.DriverConnectionProvider" />
<add key="hibernate.dialect"
value="NHibernate.Dialect.MsSql2000Dialect" />
<add key="hibernate.connection.driver_class"
value="NHibernate.Driver.SqlClientDriver" />
<add key="hibernate.connection.connection_string"
value="Data Source=DTDB;Initial Catalog=PPO_DEV;Integrated Security=SSPI;" />
</nhibernate>
</configuration>


Thanks for your Response..

If you use NHib 2.x your config should look like this (breaking changes from 1.2 to 2.0!):

Hi,
I hace placed the above code in my app.config section, It shows me an exception like
App.config file is invalid. There are multiple root elements. Whether i need to define as Nhibernate, Because i am using Nhibernate with c#.net

Thanks for your response..

This part should go into the <configuration>...</configuration> block !

Hi,
After I change <Nhibernate-Configuration> instead of hibernate, i got an another exception "The type initializer for 'NHibernate.Cfg.Environment' threw an exception." And the inner exception says "Configuration system failed to initialize".
When I kept hibernate section it shows me exception "Could not compile Mapping file."

Thanks for your valuable response..

Can u post the new config file ?

Hi,


I am new to the Nhibernate, Could you please suggest me which book or meterial is best for Nhibernate.

Thanks for your response.

<section name="hibernate-configuration"

<nhibernate-configuration xmlns="urn:nhibernate-configuration-2.2">

These have to have the same name (I'm not sure if nhibernate-configuration is allowed or if it has to be hibernatae-configuration - you have to try). This is not so much an issue of hibernate than of .net configuration. Execpt that "NHibernate in action is a good start" and have a look at http://www.nhforge.org.

Hi,
Again I am getting the Same Exception as i got before
"Could not compile the mapping document: HelloWorldNHibernate.Employee.hbm.xml". I have Added Nhibernate, Nhibernate.Mapping.Attributes and Log4Net dll Also. Still I am not getting .

App File


Thank you ..

Same inner exception?

Hi,
My inner Exception states that "persistent class HelloWorldNHibernate.Employee, HelloWorldNHibernate not found". But I kept Solution Name as "HelloWorldNHibernate" only.

Thanks..