using System;
using System.Collections.Generic;
using System.Reflection;
using NHibernate;
using NHibernate.Cfg;
using Iesi.Collections;

namespace TestII
{
	public class TableMaster
	{
		int
			_Id;

		string
			_Val;
		
		ISet
			_Details = new HashedSet();

		virtual public int Id
		{
			get
			{
				return _Id;
			}
			set
			{
				if (_Id != value)
					_Id = value;
			}
		}

		virtual public string Val
		{
			get
			{
				return _Val;
			}
			set
			{
				if (_Val != value)
					_Val = value;
			}
		}

		public virtual ISet Details
		{
			get
			{
				return _Details;
			}
			set
			{
				_Details = value;
			}
		}

		virtual public void Show()
		{
			Console.WriteLine("Id={0} -> Val=\"{ 1 }\"", Id, Val);
			foreach (TableDetail d in Details)
				d.Show();
		}

		virtual public void AddDetail(string _Val)
		{
			TableDetail
				Detail = new TableDetail();

			Detail.Master = this;
			Detail.Val = _Val;

			Details.Add(Detail);
		}
	}

	public class TableDetail
	{
		int
			_Id,
			_MasterId;

		string
			_Val;

		TableMaster
			_Master;

		virtual public int Id
		{
			get
			{
				return _Id;
			}
			set
			{
				if (_Id != value)
					_Id = value;
			}
		}

		virtual public int MasterId
		{
			get
			{
				return _MasterId;
			}
			set
			{
				if (_MasterId != value)
					_MasterId = value;
			}
		}

		virtual public string Val
		{
			get
			{
				return _Val;
			}
			set
			{
				if (_Val != value)
					_Val = value;
			}
		}

		virtual public TableMaster Master
		{
			get
			{
				return _Master;
			}
			set
			{
				_Master = value;
			}
		}

		virtual public void Show()
		{
			Console.WriteLine("Id={0} MasterId={1} -> Val=\"{ 2 }\"", Id, MasterId, Val);
		}
	}

	class Program
	{
		static ISessionFactory
			SessionFactory;

		static void Main(string[] args)
		{
			TableMaster
				m = new TableMaster();

			m.Val = "Master_X";
			m.AddDetail("Detal_X");
			m.AddDetail("Detal_XX");
			m.AddDetail("Detal_XXX");
			m.Show();

			try
			{
				using (ISession session = OpenSession())
				{
					using (ITransaction transaction = session.BeginTransaction())
					{
						session.Save(m);
						transaction.Commit();
					}
					m.Show(); // TableDetail.MasterId ==  0  ??? Ж8-/
				}
			}
			catch (Exception e)
			{
				Console.WriteLine(e);
			}

			using (ISession session = OpenSession())
			{
				IQuery
					query = session.CreateQuery("FROM TableMaster");

				IList<TableMaster>
					ms = query.List<TableMaster>();

				Console.Out.WriteLine("ms.Count = " + ms.Count);
			}

			using (ISession session = OpenSession())
			{
				using (ITransaction transaction = session.BeginTransaction())
				{
					IQuery
						query = session.CreateQuery("FROM TableMaster WHERE Id > 5");

					IList<TableMaster>
						ms = query.List<TableMaster>();

					foreach (TableMaster _m_ in ms)
						_m_.Val = "Master_Y";
					transaction.Commit();
				}
			}

			using (ISession session = OpenSession())
			{
				using (ITransaction transaction = session.BeginTransaction())
				{
					IQuery
						query = session.CreateQuery("FROM TableMaster WHERE Id > 5");

					IList<TableMaster>
						ms = query.List<TableMaster>();

					foreach (TableMaster _m_ in ms)
						session.Delete(_m_);

					transaction.Commit();
				}
			}
		}

		static ISession OpenSession()
		{
			if (SessionFactory == null)
			{
				Configuration configuration = new Configuration();

				string
					CallingAssembly = Assembly.GetCallingAssembly().FullName;

				configuration.AddAssembly(Assembly.GetCallingAssembly());
				SessionFactory = configuration.BuildSessionFactory();
			}

			return SessionFactory.OpenSession();
		}
	}
}

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true" namespace="TestII" assembly="TestII">
  
  <class name="TableMaster" lazy="true">
    <id name="Id">
      <generator class="native" />
    </id>
    <property name="Val" column ="Val"/>
    
    <set name="Details" table="TableDetail" cascade="all" inverse="true">
      <key column="MasterId" />
      <one-to-many class="TableDetail"/>
    </set>
  </class>
  
</hibernate-mapping>

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true" namespace="TestII" assembly="TestII">
  
  <class name="TableDetail" lazy="true">
    <id name="Id">
      <generator class="native" />
    </id>
    <many-to-one name="Master" class="TableMaster" column="MasterId" cascade="all" />
    <property name="Val" column ="Val"/>
  </class>
  
</hibernate-mapping>

create table TableMaster
(
   Id int not null identity constraint pkTableMaster primary key,
   Val varchar( 254 ) null
)
go

set identity_insert TableMaster on
insert into TableMaster (Id, Val) values ( 1 , 'Master_1')
insert into TableMaster (Id, Val) values ( 2 , 'Master_2')
insert into TableMaster (Id, Val) values ( 3 , 'Master_3')
insert into TableMaster (Id, Val) values ( 4 , 'Master_4')
insert into TableMaster (Id, Val) values ( 5 , 'Master_5')
set identity_insert TableMaster off
go

create table TableDetail
(
   Id int not null identity constraint pkTableDetail primary key,
   MasterId int not null,
   Val varchar( 254 ) null,
   constraint fkMasterDetail foreign key (MasterId) references TableMaster(Id) on update cascade on delete cascade
)
go

set identity_insert TableDetail on
insert into TableDetail (Id, MasterId, Val) values ( 1 ,  1 , 'Detail_1_1')
insert into TableDetail (Id, MasterId, Val) values ( 2 ,  1 , 'Detail_1_2')
insert into TableDetail (Id, MasterId, Val) values ( 3 ,  1 , 'Detail_1_3')
insert into TableDetail (Id, MasterId, Val) values ( 4 ,  2 , 'Detail_2_1')
insert into TableDetail (Id, MasterId, Val) values ( 5 ,  2 , 'Detail_2_2')
insert into TableDetail (Id, MasterId, Val) values ( 6 ,  2 , 'Detail_2_3')
insert into TableDetail (Id, MasterId, Val) values ( 7 ,  2 , 'Detail_2_4')
set identity_insert TableDetail off
go

using System.Collections;

namespace TestV
{
	public class Master
	{
		int
			_Id;

		string
			_Val;

		IList
			_Details;

		public virtual int Id
		{
			get
			{
				return _Id;
			}
			set
			{
				if (_Id != value)
					_Id = value;
			}
		}

		public virtual string Val
		{
			get
			{
				return _Val;
			}
			set
			{
				if (_Val != value)
					_Val = value;
			}
		}

		public virtual IList Details
		{
			get
			{
				return _Details;
			}
			set
			{
				_Details = value;
			}
		}
	}
}

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true" namespace="TestV" assembly="TestV">

  <class name="Master" table="TableMaster" lazy="true">
    <id name="Id">
      <generator class="native" />
    </id>
    <property name="Val" />

    <bag name="Details" cascade="all" lazy="true">
      <key column="MasterId"/>
      <one-to-many class="Detail"/>
    </bag>
  </class>
  
</hibernate-mapping>

namespace TestV
{
	public class Detail
	{
		int
			_Id;

		string
			_Val;

		Master
			_Master;

		public virtual int Id
		{
			get
			{
				return _Id;
			}
			set
			{
				if (_Id != value)
					_Id = value;
			}
		}

		public virtual Master Master
		{
			get
			{
				return _Master;
			}
			set
			{
				_Master = value;
			}
		}

		public virtual string Val
		{
			get
			{
				return _Val;
			}
			set
			{
				if (_Val != value)
					_Val = value;
			}
		}
	}
}

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true" namespace="TestV" assembly="TestV">

  <class name="Detail" table="TableDetail" lazy="true">
    <id name="Id">
      <generator class="native" />
    </id>
    <many-to-one name="Master" column="MasterId" class="Master" />
    <property name="Val" />
  </class>
  
</hibernate-mapping>