Hi all, I am having trouble using NHibernate in a multi tier application. I am trying to have the following:
- Data Access Layer
- Class Library
- Business Logic
- Presentation Layer

What I am thinking and what I have done already is the following:
- I have the Persistent Manager class in my Data Access Layer and I am trying to put my mapping files in here too.
- Class Library only has my class definitions. For example, public class Customer
- Business Logic will have classes that extend the classes found in my Class Library (avoids circular referencing).
- Presentation Layer simply displays data.

I am getting the following error, No persister for ClassLibrary.Customer.

I tried moving the Customer.hbm.xml file to my ClassLibrary project but still no luck.

My Customer.hbm.xml file:
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
namespace="ClassLibrary"
assembly="ClassLibrary">
<class name="ClassLibrary.Customer, ClassLibrary" table="Customer" lazy="false">
<id name="CustomerID">
<column name="CustomerID" />
<generator class="identity" />
</id>
<property name="DateModified" />
<property name="CustomerName" />
</class>
</hibernate-mapping>

My class file (this is in a project called ClassLibrary):
namespace ClassLibrary
{
public class Customer
{
public DateTime DateModified { get; set; }
public String CustomerName { get; set; }
public int CustomerID { get; set; }
}
}

I would appreciate any help on the matter as I am going round in circles at the moment. It all works when I place it in the single project but ideally I want to place it in seperate projects (multi tier application).

Thanks everyone.