hi
i am new bie to nhibernate.
I am using vs.net 2005 using VB
I am creating a testing nhibernate example
But i am showing error

Could not compile the mapping document: NHibernateWithAccess.User.hbm.xml

I also set embedded resources property of xml file

Shared Sub Main()
log4net.Config.XmlConfigurator.Configure()
Dim configuration As Configuration = New Configuration()
Console.WriteLine("Loading hibernate.cfg.xml...")
configuration.Configure()
Console.WriteLine("Loading mapping files in this executable...")
configuration.AddAssembly(System.Reflection.Assembly.GetExecutingAssembly())
Dim factory As ISessionFactory = configuration.BuildSessionFactory()
Dim firstId As Integer
Dim session As ISession = factory.OpenSession()
Console.WriteLine("Saving a test User object to the database...")

error line
configuration.AddAssembly

Hi,

can you post your mapping document?

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="NHibernateWithAccess.User, NHibernateWithAccess" table="Users">

<id name="_Id" column="Id" type="int" unsaved-value="0">
<generator class="identity" />
</id>

<property name="_EmailAddress" length="50" />
<property name="_UserName" column="UserName" type="String" length="50"/>
<property name="_Password" column="[Password]" type="String" length="50"/>

</class>
</hibernate-mapping>

NHibernate-1.2.0.CR2

Loading hibernate.cfg.xml...
Loading mapping files in this executable...
16:49:58,812 ERROR ReflectHelper:0 - Could not load type Nhibernate.User, Nhiber
nate.
System.TypeLoadException: Could not load type 'Nhibernate.User' from assembly 'N
Hibernate, Version=1.2.0.3002, Culture=neutral, PublicKeyToken=aa95f207798dfdb4'
.
at System.Reflection.Assembly.GetType(String name, Boolean throwOnError, Bool
ean ignoreCase)
at System.Reflection.Assembly.GetType(String name, Boolean throwOnError)
at NHibernate.Util.ReflectHelper.TypeFromAssembly(AssemblyQualifiedTypeName n
ame, Boolean throwOnError)
16:49:58,875 ERROR Configuration:0 - Could not compile the mapping document: Nhi
bernate.User.hbm.xml
NHibernate.MappingException: Could not compile the mapping document: Nhibernate.
User.hbm.xml ---> NHibernate.MappingException: persistent class Nhibernate.User,
Nhibernate not found ---> System.TypeLoadException: Could not load type 'Nhiber
nate.User' from assembly 'NHibernate, Version=1.2.0.3002, Culture=neutral, Publi
cKeyToken=aa95f207798dfdb4'.
at System.Reflection.Assembly.GetType(String name, Boolean throwOnError, Bool
ean ignoreCase)
at System.Reflection.Assembly.GetType(String name, Boolean throwOnError)
at NHibernate.Util.ReflectHelper.TypeFromAssembly(AssemblyQualifiedTypeName n
ame, Boolean throwOnError)
at NHibernate.Util.ReflectHelper.ClassForName(String name)
at NHibernate.Cfg.HbmBinder.ClassForFullNameChecked(String fullName, String e
rrorMessage)
--- End of inner exception stack trace ---
at NHibernate.Cfg.HbmBinder.ClassForFullNameChecked(String fullName, String e
rrorMessage)
at NHibernate.Cfg.HbmBinder.BindClass(XmlNode node, PersistentClass model, Ma
ppings mappings)
at NHibernate.Cfg.HbmBinder.BindRootClass(XmlNode node, RootClass model, Mapp
ings mappings)
at NHibernate.Cfg.HbmBinder.BindRoot(XmlDocument doc, Mappings mappings)
at NHibernate.Cfg.Configuration.AddValidatedDocument(XmlDocument doc, String
name)
--- End of inner exception stack trace ---

Maybe it is the missing type-attribute on the MailAddress-property-element...

EDIT: It seems that your assembly in the "AddAssembly" line cannot be found. Try to skip this line and check again.

thnks to reply dear

when i ignoring it then this error

Unknown entity class: Nhibernate.User

Post your hibernate.cfg.xml

My guess is that, somewhere, maybe in the config, you're telling NHibernate to add assembly 'NHibernate' to load the mappings. You need to change that to NHibernateWithAccess.

Also, just to make sure ahead of time, your assembly that has your .hbm.xml file is called NHibernateWithAccess.dll, right?

my problem is not fixed.

You need to provide more information if you want your problem fixed...

Reread my requests:

Post your hibernate.cfg.xml

Also, just to make sure ahead of time, your assembly that has your .hbm.xml file is called NHibernateWithAccess.dll, right?

<?xml version="1.0" ?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2" >

<!-- For simplicity, the NHibernate configuration is stored in this file.
It must be named hibernate.cfg.xml and marked in Visual Studio to be copied
to the output folder. -->

<session-factory>

<!-- By default NHibernate is aggressive in closing connections between
SQL statments. This unfortunately causes a problem when reading ID
numbers assigned by Access (e.g. in AutoNumber fields). See comments
in the Test 1 section of Program.cs. -->

<property name="hibernate.connection.release_mode">on_close</property>

<property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>
<property name="dialect">NHibernate.JetDriver.JetDialect, NHibernate.JetDriver</property>
<property name="connection.driver_class">NHibernate.JetDriver.JetDriver, NHibernate.JetDriver</property>

<!-- The Sample.mdb file is located in the folder containing the
solution file. This is three folders upward. Relative paths
are supported in Jet connection strings. -->

<property name="connection.connection_string">Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Sample.mdb</property>
</session-factory>
</hibernate-configuration>

Is your assembly called NHibernateWithAccess?

The error thrown is:

Could not load type 'Nhibernate.User' from assembly 'N
Hibernate

Which indicates that it's trying to load your mapping and type from the NHibernate assembly and not your own NHibernateWithAccess assembly.

For now, please try this... remove this line:

configuration.AddAssembly(System.Reflection.Assembly.GetExecutingAssembly())

And replace it with this one:

configuration.AddAssembly("NHibernateWithAccess");

How are you executing this project?

please give me ur email address i want to email u my example.
if u dnt mind.
thnks

ben@hyrman.com