I cant really find the problem i am having here, i dont understand why it says the mapping is going wrong, if anyone could help me i would much apriciate it.

Hibernate version:
Nhibernate 2.0.0.ALPHA1
Mapping documents:

this is my mapping document for the table Persona.

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
namespace="QuickStart" assembly="QuickStart">
<class name="Persona" table="Persona">
<!-- A 32 hex character is our surrogate key. It's automatically
generated by NHibernate with the UUID pattern. -->
<id name="cedula">
<column name="cedula" sql-type="varchar2(16)" not-null="true"/>
<generator class="uuid.hex" />
</id>
<property name="nombre">
<column name="nombre" lenght="20" not-null="true" />
</property>
<property name="apellido" >
<column name="apellido" lenght="20" not-null="true" />
</property>
</class>
</hibernate-mapping>

this is my configuration file

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-configuration xmlns= "urn:nhibernate-configuration-2.2">
<session-factory>
<property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>
<property name="dialect">NHibernate.Dialect.Oracle9Dialect</property>
<property name="connection.driver_class">NHibernate.Driver.OracleClientDriver</property>
<property name="connection.connection_string">Data Source=localhost;Persist Security Info=True;User ID=XXXPassword=XXX;</property>
<property name="show_sql">true</property>
<mapping assembly="QuickStart"/>
</session-factory>
</hibernate-configuration>

Code between sessionFactory.openSession() and session.close():
try
{
Configuration cfg = new Configuration();
cfg.Configure("hibernate.cfg.xml");

ISessionFactory factory = cfg.BuildSessionFactory();
ISession session = factory.OpenSession();
ITransaction transaction = session.BeginTransaction();

Persona lol = new Persona();
lol.Id = "17385976";
lol.Nombre = "Tomas";
lol.Apellido = "Henriquez";
session.Save(lol);
transaction.Commit();
session.Flush();
session.Close();
}
catch (Exception e) { MessageBox.Show("Error: " + e); }

}
Full stack trace of any exception that occurs:
NHibernate.MappingException: Unknown entity class: QuickStart.Persona
at NHibernate.Impl.SessionFactoryImpl.GetEntityPersister(Type theClass) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Impl\SessionFactoryImpl.cs:line 781
at NHibernate.Impl.SessionImpl.GetClassPersister(Type theClass) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Impl\SessionImpl.cs:line 1230
at NHibernate.Impl.SessionImpl.GetEntityPersister(Object obj) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Impl\SessionImpl.cs:line 1238
at NHibernate.Event.Default.AbstractSaveEventListener.SaveWithGeneratedId(Object entity, String entityName, Object anything, IEventSource source, Boolean requiresImmediateIdAccess) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Event\Default\AbstractSaveEventListener.cs:line 106
at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.SaveWithGeneratedOrRequestedId(SaveOrUpdateEvent event) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Event\Default\DefaultSaveOrUpdateEventListener.cs:line 162
at NHibernate.Event.Default.DefaultSaveEventListener.SaveWithGeneratedOrRequestedId(SaveOrUpdateEvent event) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Event\Default\DefaultSaveEventListener.cs:line 29
at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.EntityIsTransient(SaveOrUpdateEvent event) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Event\Default\DefaultSaveOrUpdateEventListener.cs:line 148
at NHibernate.Event.Default.DefaultSaveEventListener.PerformSaveOrUpdate(SaveOrUpdateEvent event) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Event\Default\DefaultSaveEventListener.cs:line 21
at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.OnSaveOrUpdate(SaveOrUpdateEvent event) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Event\Default\DefaultSaveOrUpdateEventListener.cs:line 53
at NHibernate.Impl.SessionImpl.FireSave(SaveOrUpdateEvent event) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Impl\SessionImpl.cs:line 2165
at NHibernate.Impl.SessionImpl.Save(Object obj) in c:\DATA\Projects\nhibernate\2.0.x\copy1\nhibernate\src\NHibernate\Impl\SessionImpl.cs:line 407
at QuickStart.NH.Main(String[] args) in C:\Documents and Settings\Tommy\Mis documentos\Visual Studio 2005\Projects\Prueba\Prueba\NH.cs:line 35

Name and version of the database you are using:
Oracle XE

I don't think, you can specifiy a complete assembly with

<mapping assembly="QuickStart"/>

You have to specifiy each mapping file

<mapping ressource="QuickStart.Persona.hbm.xml" assembly="QuickStart"/>

Alternativly, you can add a complete assembly with

cfg.AddAssembly("QuickStart");

But then make sure, you've marked your mapping files as "Embedded Ressource".

hahaha i got the solution, well i havent sleeped in a long time but here it is, a little dumb i am answering myself but maybe someone could use it.

first i made the persona.hbm.xml a embeded resource, after that i added this to the hibernate-mapping tag (what appears resalted below). then i told me about the lazy thingy, i put it off cause i just use 1 table, but check this out if you want to understand it better. http://blogs.chayachronicles.com/sonofn ... 0/230.aspx

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="QuickStart" namespace="QuickStart">
<class name="Persona" table="persona" lazy="false">
<id name="Id">
<column name="cedula" sql-type="varchar2(16)" not-null="true"/>
<generator class="assigned" />
</id>
<property name="Nombre">
<column name="nombre" sql-type="varchar2(20)" length="20" not-null="true" />
</property>
<property name="Apellido" >
<column name="apellido" sql-type="varchar2(20)" length="20" not-null="true" />
</property>
</class>
</hibernate-mapping>

ok thx :)

ok thx :)