public interface IMultiple {
        string GetName ();
    }

    public class ImplementationOne : IMultiple {
        public string GetName () {
            return "Abolfazl Roshanzamir";
        }
    }

    public class ImplementationTwo : IMultiple {
        public string GetName () {
            return "َAndy Madadian";
        }
    }

private readonly Func<string, IMultiple> _serviceAccessor;

public HomeController (Func<string, IMultiple> serviceAccessor) {
     this._serviceAccessor = serviceAccessor;
}
public IActionResult Index () {
    var implementOne = this._serviceAccessor ("A").GetName (); // Abolfazl Roshanzamir 
    var implementTwo = this._serviceAccessor ("B").GetName (); // Andy Madadian 
    return View ();
}

HibernatingRhinos.Profiler.Appender.EntityFramework.EntityFrameworkProfiler.Initialize();

using System.Collections.Generic;

namespace EF_Sample06.Models
{
    public class Department
    {
        public int DepartmentId { get; set; }
        public string Name { get; set; }

        //Creates Employee navigation property for Lazy Loading (1:many)
        public virtual ICollection<Employee> Employees { get; set; }
    }
}

namespace EF_Sample06.Models
{
    public class Employee
    {
        public int EmployeeId { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }        

        //Creates Department navigation property for Lazy Loading
        public virtual Department Department { get; set; }
    }
}

using System.Data.Entity;
using EF_Sample06.Models;

namespace EF_Sample06.DataLayer
{
    public class Sample06Context : DbContext
    {
        public DbSet<Department> Departments { set; get; }
        public DbSet<Employee> Employees { set; get; }
    }
}

using System.Collections.Generic;
using System.Data.Entity.Migrations;
using EF_Sample06.Models;

namespace EF_Sample06.DataLayer
{
    public class Configuration : DbMigrationsConfiguration<Sample06Context>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
            AutomaticMigrationDataLossAllowed = true;
        }

        protected override void Seed(Sample06Context context)
        {
            var employee1 = new Employee { FirstName = "f name1", LastName = "l name1" };
            var employee2 = new Employee { FirstName = "f name2", LastName = "l name2" };
            var employee3 = new Employee { FirstName = "f name3", LastName = "l name3" };
            var employee4 = new Employee { FirstName = "f name4", LastName = "l name4" };

            var dept1 = new Department { Name = "dept 1", Employees = new List<Employee> { employee1, employee2 } };
            var dept2 = new Department { Name = "dept 2", Employees = new List<Employee> { employee3 } };
            var dept3 = new Department { Name = "dept 3", Employees = new List<Employee> { employee4 } };

            context.Departments.Add(dept1);
            context.Departments.Add(dept2);
            context.Departments.Add(dept3);
            base.Seed(context);
        }
    }
}

void ExportMappings(DbContext context, string edmxFile)
{
     var settings = new XmlWriterSettings { Indent = true };
     using (XmlWriter writer = XmlWriter.Create(edmxFile, settings))
     {
         System.Data.Entity.Infrastructure.EdmxWriter.WriteEdmx(context, writer);
     }
}

using (var db = new Sample06Context())
{
     ExportMappings(db, "mappings.edmx");
}

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using EF_Sample06.DataLayer;
using EF_Sample06.Models;

namespace EF_Sample06
{
    class Program
    {
        static IList<Employee> FindEmployees(string fName, string lName, bool byName, bool byLName)
        { 
            using (var db = new Sample06Context())
            {
                IQueryable<Employee> query = db.Employees.AsQueryable();

                if (byLName)
                {
                    query = query.Where(x => x.LastName == lName);
                }

                if (byName)
                {
                    query = query.Where(x => x.FirstName == fName);
                }

                return query.ToList();
            }
        }

        static void Main(string[] args)
        {
            // note: remove this line if you received : create database is not supported by this provider.
            HibernatingRhinos.Profiler.Appender.EntityFramework.EntityFrameworkProfiler.Initialize();

            Database.SetInitializer(new MigrateDatabaseToLatestVersion<Sample06Context, Configuration>());

            var list = FindEmployees("f name1", "l name1", true, true);
            foreach (var item in list)
            {
                Console.WriteLine(item.FirstName);
            }
        }
    }
}

var list = FindEmployees("f name1", "l name1", true, true);

SELECT [Extent1].[EmployeeId]              AS [EmployeeId],
       [Extent1].[FirstName]               AS [FirstName],
       [Extent1].[LastName]                AS [LastName],
       [Extent1].[Department_DepartmentId] AS [Department_DepartmentId]
FROM   [dbo].[Employees] AS [Extent1]
WHERE  ([Extent1].[LastName] = 'l name1' /* @p__linq__0 */)
       AND ([Extent1].[FirstName] = 'f name1' /* @p__linq__1 */)

using (var db = new Sample06Context())
{
    var dept1 = db.Departments.Find(1);
    if (dept1 != null)
    {
        Console.WriteLine(dept1.Name);
        foreach (var item in dept1.Employees)
        {
             Console.WriteLine(item.FirstName);
        }
    }
}

SELECT [Limit1].[DepartmentId] AS [DepartmentId],
       [Limit1].[Name]         AS [Name]
FROM   (SELECT TOP (2) [Extent1].[DepartmentId] AS [DepartmentId],
                       [Extent1].[Name]         AS [Name]
        FROM   [dbo].[Departments] AS [Extent1]
        WHERE  [Extent1].[DepartmentId] = 1 /* @p0 */) AS [Limit1]


SELECT [Extent1].[EmployeeId]              AS [EmployeeId],
       [Extent1].[FirstName]               AS [FirstName],
       [Extent1].[LastName]                AS [LastName],
       [Extent1].[Department_DepartmentId] AS [Department_DepartmentId]
FROM   [dbo].[Employees] AS [Extent1]
WHERE  ([Extent1].[Department_DepartmentId] IS NOT NULL)
       AND ([Extent1].[Department_DepartmentId] = 1 /* @EntityKeyValue1 */)

using (var db = new Sample06Context())
{
      foreach (var dept in db.Departments)
      {
           Console.WriteLine(dept.Name);
           foreach (var item in dept.Employees)
           {
                Console.WriteLine(item.FirstName);
            }
        }
}

There is already an open DataReader associated with this Command which must be closed first

<connectionStrings>
    <clear/>
    <add
       name="Sample06Context"
       connectionString="Data Source=(local);Initial Catalog=testdb2012;Integrated Security = true;MultipleActiveResultSets=True;"
       providerName="System.Data.SqlClient"
      />
</connectionStrings>

using (var db = new Sample06Context())
{
      foreach (var dept in db.Departments.Include(x => x.Employees))
      {
           Console.WriteLine(dept.Name);
           foreach (var item in dept.Employees)
           {
              Console.WriteLine(item.FirstName);
           }
       }
}

SELECT [Project1].[DepartmentId]            AS [DepartmentId],
       [Project1].[Name]                    AS [Name],
       [Project1].[C1]                      AS [C1],
       [Project1].[EmployeeId]              AS [EmployeeId],
       [Project1].[FirstName]               AS [FirstName],
       [Project1].[LastName]                AS [LastName],
       [Project1].[Department_DepartmentId] AS [Department_DepartmentId]
FROM   (SELECT [Extent1].[DepartmentId]            AS [DepartmentId],
               [Extent1].[Name]                    AS [Name],
               [Extent2].[EmployeeId]              AS [EmployeeId],
               [Extent2].[FirstName]               AS [FirstName],
               [Extent2].[LastName]                AS [LastName],
               [Extent2].[Department_DepartmentId] AS [Department_DepartmentId],
               CASE
                 WHEN ([Extent2].[EmployeeId] IS NULL) THEN CAST(NULL AS int)
                 ELSE 1
               END                                 AS [C1]
        FROM   [dbo].[Departments] AS [Extent1]
               LEFT OUTER JOIN [dbo].[Employees] AS [Extent2]
                 ON [Extent1].[DepartmentId] = [Extent2].[Department_DepartmentId]) AS [Project1]
ORDER  BY [Project1].[DepartmentId] ASC,
          [Project1].[C1] ASC

public class Sample06Context : DbContext
{
        public Sample06Context()
        {
            this.Configuration.LazyLoadingEnabled = false;
        }

public class Department
{
     public int DepartmentId { get; set; }
     public string Name { get; set; }

     public  ICollection<Employee> Employees { get; set; }
     public Department()
     {
         Employees = new HashSet<Employee>();
     }
}

namespace NHSample2.Domain
{
  public class User
  {
      public virtual int Id { get; set; }
      public virtual string UserName { get; set; }
      public virtual string Password { get; set; }
  }
}

namespace NHSample2.Domain
{
  public class Category
  {
      public virtual int Id { get; set; }
      public virtual string CategoryName { get; set; }
  }
}

using System;

namespace NHSample2.Domain
{
  public class News
  {
      public virtual Guid Id { get; set; }
      public virtual string Subject { get; set; }
      public virtual string NewsText { get; set; }
      public virtual DateTime DateEntered { get; set; }
      public virtual Category Category { get; set; }
      public virtual User User { get; set; }
  }
}

using FluentNHibernate.Automapping;
using FluentNHibernate.Cfg;
using FluentNHibernate.Cfg.Db;
using NHibernate;
using NHibernate.Cfg;
using NHibernate.Tool.hbm2ddl;

namespace NHSample2
{
  class Config
  {
      public static Configuration GenerateMapping(IPersistenceConfigurer dbType)
      {
          var cfg = dbType.ConfigureProperties(new Configuration());

          new AutoPersistenceModel()
              .Where(x => x.Namespace.EndsWith("Domain"))
              .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly).Configure(cfg);

          return cfg;
      }

      public static void GenerateDbScript(Configuration config, string filePath)
      {
          bool script = true;//فقط اسکریپت دیتابیس تولید گردد
          bool export = false;//نیازی نیست بر روی دیتابیس هم اجرا شود
          new SchemaExport(config).SetOutputFile(filePath).Create(script, export);
      }

      public static void BuildDbSchema(Configuration config)
      {
          bool script = false;//آیا خروجی در کنسول هم نمایش داده شود
          bool export = true;//آیا بر روی دیتابیس هم اجرا شود
          bool drop = false;//آیا اطلاعات موجود دراپ شوند
          new SchemaExport(config).Execute(script, export, drop);
      }

      public static void CreateSQL2008DbPlusScript(string connectionString, string filePath)
      {
          Configuration cfg =
              GenerateMapping(
              MsSqlConfiguration
              .MsSql2008
              .ConnectionString(connectionString)
              .ShowSql()
              );
          GenerateDbScript(cfg, filePath);
          BuildDbSchema(cfg);
      }

      public static ISessionFactory CreateSessionFactory(IPersistenceConfigurer dbType)
      {
          return
             Fluently.Configure().Database(dbType)
              .Mappings(m => m.AutoMappings
                         .Add(
                             new AutoPersistenceModel()
                                 .Where(x => x.Namespace.EndsWith("Domain"))
                                 .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly))
                                 )
               .BuildSessionFactory();
      }
  }
}

using System;

namespace NHSample2
{
  class Program
  {
      static void Main(string[] args)
      {
         Config.CreateSQL2008DbPlusScript(
              "Data Source=(local);Initial Catalog=HelloNHibernate;Integrated Security = true",
              "db.sql");

          Console.WriteLine("Press a key...");
          Console.ReadKey();
      }
  }
}

  create table [Category] (
      Id INT IDENTITY NOT NULL,
     CategoryName NVARCHAR(255) null,
     primary key (Id)
  )

  create table [User] (
      Id INT IDENTITY NOT NULL,
     UserName NVARCHAR(255) null,
     Password NVARCHAR(255) null,
     primary key (Id)
  )

  create table [News] (
      Id UNIQUEIDENTIFIER not null,
     Subject NVARCHAR(255) null,
     NewsText NVARCHAR(255) null,
     DateEntered DATETIME null,
     Category_id INT null,
     User_id INT null,
     primary key (Id)
  )

  alter table [News]
      add constraint FKE660F9E1C9CF79
      foreign key (Category_id)
      references [Category]

  alter table [News]
      add constraint FKE660F95C1A3C92
      foreign key (User_id)

      references [User]

using System;
using FluentNHibernate.Cfg.Db;
using NHibernate;
using NHSample2.Domain;

namespace NHSample2
{
  class Program
  {
      static void Main(string[] args)
      {
          using (ISessionFactory sessionFactory = Config.CreateSessionFactory(
                  MsSqlConfiguration
                      .MsSql2008
                      .ConnectionString("Data Source=(local);Initial Catalog=HelloNHibernate;Integrated Security = true")
                      .ShowSql()
                  ))
          {
              using (ISession session = sessionFactory.OpenSession())
              {
                  using (ITransaction transaction = session.BeginTransaction())
                  {
                      //با توجه به کلیدهای خارجی تعریف شده ابتدا باید گروه‌ها را اضافه کرد
                      Category ca = new Category() {  CategoryName = "Sport" };
                      session.Save(ca);
                      Category ca2 = new Category() { CategoryName = "IT" };
                      session.Save(ca2);
                      Category ca3 = new Category() { CategoryName = "Business" };
                      session.Save(ca3);

                      //سپس یک کاربر را به دیتابیس اضافه می‌کنیم
                      User u = new User() {  Password = "123$5@1", UserName = "VahidNasiri" };
                      session.Save(u);

                      //اکنون می‌توان یک خبر جدید را ثبت کرد

                      News news = new News()
                      {
                          Category = ca,
                          User = u,
                          DateEntered = DateTime.Now,
                          Id = Guid.NewGuid(),
                          NewsText = "متن خبر جدید",
                          Subject = "عنوانی دلخواه"
                      };
                      session.Save(news);

                      transaction.Commit(); //پایان تراکنش
                  }
              }
          }

          Console.WriteLine("Press a key...");
          Console.ReadKey();
      }
  }
}

using System.Linq;
using NHibernate;
using NHibernate.Linq;
using NHSample2.Domain;

namespace NHSample2
{
  class NewsContext : NHibernateContext
  {
      public NewsContext(ISession session)
         : base(session)
     { }

     public IOrderedQueryable<News> News
     {
         get { return Session.Linq<News>(); }
     }

     public IOrderedQueryable<Category> Categories
     {
         get { return Session.Linq<Category>(); }
     }

     public IOrderedQueryable<User> Users
     {
         get { return Session.Linq<User>(); }
     }
  }
}

using System;
using FluentNHibernate.Cfg.Db;
using NHibernate;
using System.Linq;
using NHSample2.Domain;

namespace NHSample2
{
  class Program
  {
      static void Main(string[] args)
      {
          using (ISessionFactory sessionFactory = Config.CreateSessionFactory(
                  MsSqlConfiguration
                      .MsSql2008
                      .ConnectionString("Data Source=(local);Initial Catalog=HelloNHibernate;Integrated Security = true")
                      .ShowSql()
                  ))
          {
              using (ISession session = sessionFactory.OpenSession())
              {
                  using (ITransaction transaction = session.BeginTransaction())
                  {
                      using (NewsContext db = new NewsContext(session))
                      {
                          var query = from x in db.Users
                                      where x.UserName == "VahidNasiri"
                                      select x;

                          //اگر چیزی یافت شد
                          if (query.Any())
                          {
                              User vahid = query.First();
                              //نمایش اطلاعات کاربر
                              Console.WriteLine("Id: {0}, UserName: {0}", vahid.Id, vahid.UserName);
                              //به روز رسانی نام کاربر
                              vahid.UserName = "Vahid";
                              session.Update(vahid);

                              transaction.Commit(); //پایان تراکنش
                          }
                      }
                  }
              }
          }

          Console.WriteLine("Press a key...");
          Console.ReadKey();
      }
  }
}

      using FluentNHibernate.Conventions.Helpers;

      public static Configuration GenerateMapping(IPersistenceConfigurer dbType)
      {
          var cfg = dbType.ConfigureProperties(new Configuration());

          new AutoPersistenceModel()
          .Conventions.Add()
              .Where(x => x.Namespace.EndsWith("Domain"))
               .Conventions.Add(
                 PrimaryKey.Name.Is(x => "ID"),
                 DefaultLazy.Always(),
                 ForeignKey.EndsWith("ID"),
                 Table.Is(t => "tbl" + t.EntityType.Name)                 
                 )
              .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly)
              .Configure(cfg);

          return cfg;
      }

using FluentNHibernate.Conventions;
using FluentNHibernate.Conventions.Instances;

namespace NHSample2.Conventions
{
  class MyStringLengthConvention : IPropertyConvention
  {
      public void Apply(IPropertyInstance instance)
      {
          instance.Length(500);
      }
  }
}

      public static Configuration GenerateMapping(IPersistenceConfigurer dbType)
      {
          var cfg = dbType.ConfigureProperties(new Configuration());

          new AutoPersistenceModel()
          .Conventions.Add()
              .Where(x => x.Namespace.EndsWith("Domain"))
               .Conventions.Add<MyStringLengthConvention>()
              .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly)
              .Configure(cfg);

          return cfg;
      }

public class Recipe3Context : DbContext
{
    public Recipe3Context() : base("Recipe3ConnectionString") { }
    public DbSet<TravelAgent> TravelAgents { get; set; }
    public DbSet<Booking> Bookings { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity<TravelAgent>().HasKey(x => x.AgentId);
        modelBuilder.Entity<TravelAgent>().ToTable("TravelAgents");
        modelBuilder.Entity<Booking>().ToTable("Bookings");
    }
}

// Post

public int Id { get; set; }

public string Title { get; set; }

public int LikeCount { get; set; }

public int CommentCount { get; set; }

public DateTimeOffset DateCreated { get; set; } = DateTimeOffset.UtcNow;

services.AddScoped<SieveProcessor>();

// Post

public int Id { get; set; }

[Sieve(CanFilter = true, CanSort = true)]
public string Title { get; set; }

[Sieve(CanFilter = true, CanSort = true)]
public int LikeCount { get; set; }

[Sieve(CanFilter = true, CanSort = true)]
public int CommentCount { get; set; }

[Sieve(CanFilter = true, CanSort = true, Name = "created")]
public DateTimeOffset DateCreated { get; set; } = DateTimeOffset.UtcNow;

// ApplicationSieveProcessor

public class ApplicationSieveProcessor : SieveProcessor
{
    public ApplicationSieveProcessor(
        IOptions<SieveOptions> options, 
        ISieveCustomSortMethods customSortMethods, 
        ISieveCustomFilterMethods customFilterMethods) 
        : base(options, customSortMethods, customFilterMethods)
    {
    }

    protected override SievePropertyMapper MapProperties(SievePropertyMapper mapper)
    {
        mapper.Property<Post>(p => p.Title)
            .CanFilter()
            .HasName("a_different_query_name_here");

        mapper.Property<Post>(p => p.CommentCount)
            .CanSort();

        mapper.Property<Post>(p => p.DateCreated)
            .CanSort()
            .CanFilter()
            .HasName("created_on");

        return mapper;
    }
}

• filters: دستورالعمل‌های جدا شده توسط کاما (,) به صورت {Name}{Operator}{Value} که در آن:
• {Name} نام ویژگی‌ای است که صفت Sieve بر روی آن تعریف شده و یا نام سفارشی‌ای است که کاربر تعیین کرده است.
• همچنین می‌توانید بیش از یک نام (برای یای منطقی (OR)) در درون جفت پرانتز باز و بسته و جداکننده یای منطقی (|) داشته باشید. برای مثال: LikeCount|CommentCount)>10) مشخص می‌کند مقدار LikeCount و یا CommentCount بیش از ۱۰ باشد.
  
• {Operator} یکی از عملگرهای ممکن است.
• {Value} مقداری است که در عمل فیلتر مورد استفاده قرار می‌گیرد.
• page: شماره صفحه‌ای است که برگشت داده می‌شود.
• pageSize: تعداد مواردی است که در هر صفحه برگردانده خواهد شد.

۶. عملگرها (Operators)

۷. پیکربندی

{
    "Sieve": {
        "CaseSensitive": "boolean: should property names be case-sensitive? Defaults to false",
        "DefaultPageSize": "int number: optional number to fallback to when no page argument is given. Set <=0 to disable paging if no pageSize is specified (default).",
        "MaxPageSize": "int number: maximum allowed page size. Set <=0 to make infinite (default)",
        "ThrowExceptions": "boolean: should Sieve throw exceptions instead of silently failing? Defaults to false"
    }
}

services.Configure<SieveOptions>(Configuration.GetSection("Sieve"));

namespace NHSample1.Domain
{
   public class Product
   {
       public int Id { get; set; }
       public string Name { get; set; }
       public decimal UnitPrice { get; set; }
       public bool Discontinued { get; set; }
   }
}

using FluentNHibernate.Mapping;
using NHSample1.Domain;

namespace NHSample1.Mappings
{
   public class ProductMapping : ClassMap<Product>
   {
       public ProductMapping()
       {
           Not.LazyLoad();
           Id(p => p.Id).GeneratedBy.HiLo("1000");
           Map(p => p.Name).Length(50).Not.Nullable();
           Map(p => p.UnitPrice).Not.Nullable();
           Map(p => p.Discontinued).Not.Nullable();
       }
   }
}

using NUnit.Framework;
using FluentNHibernate.Testing;
using NHSample1.Domain;

namespace UnitTests
{
   [TestFixture]
   public class ProductMapping_Fixture : FixtureBase
   {
       [Test]
       public void can_correctly_map_product()
       {
           new PersistenceSpecification<Product>(Session)
                   .CheckProperty(p => p.Id, 1001)
                   .CheckProperty(p => p.Name, "Apples")
                   .CheckProperty(p => p.UnitPrice, 10.45m)
                   .CheckProperty(p => p.Discontinued, true)
                   .VerifyTheMappings();
       }
   }
}

ProductMapping_Fixture.can_correctly_map_product : Passed
NHibernate: select next_hi from hibernate_unique_key
NHibernate: update hibernate_unique_key set next_hi = @p0 where next_hi = @p1;@p0 = 2, @p1 = 1
NHibernate: INSERT INTO "Product" (Name, UnitPrice, Discontinued, Id) VALUES (@p0, @p1, @p2, @p3);@p0 = 'Apples', @p1 = 10.45, @p2 = True, @p3 = 1001
NHibernate: SELECT product0_.Id as Id1_0_, product0_.Name as Name1_0_, product0_.UnitPrice as UnitPrice1_0_, product0_.Discontinued as Disconti4_1_0_ FROM "Product" product0_ WHERE product0_.Id=@p0;@p0 = 1001

using System;
namespace NHSample1.Domain
{
   public class Employee
   {
       public int Id { set; get; }
       public string LastName { get; set; }
       public string FirstName { get; set; }
   }
}

using NHSample1.Domain;
using FluentNHibernate.Mapping;

namespace NHSample1.Mappings
{
   public class EmployeeMapping : ClassMap<Employee>
   {
       public EmployeeMapping()
       {
           Not.LazyLoad();
           Id(e => e.Id).GeneratedBy.Assigned();
           Map(e => e.LastName).Length(50);
           Map(e => e.FirstName).Length(50);
       }
   }
}

using NUnit.Framework;
using NHSample1.Domain;
using FluentNHibernate.Testing;

namespace UnitTests
{
   [TestFixture]
   public class EmployeeMapping_Fixture : FixtureBase
   {
       [Test]
       public void can_correctly_map_employee()
       {
           new PersistenceSpecification<Employee>(Session)
                   .CheckProperty(p => p.Id, 1001)
                   .CheckProperty(p => p.FirstName, "name1")
                   .CheckProperty(p => p.LastName, "lname1")
                   .VerifyTheMappings();
       }
   }
}

NHibernate: select next_hi from hibernate_unique_key
NHibernate: update hibernate_unique_key set next_hi = @p0 where next_hi = @p1;@p0 = 2, @p1 = 1
NHibernate: INSERT INTO "Employee" (LastName, FirstName, Id) VALUES (@p0, @p1, @p2);@p0 = 'lname1', @p1 = 'name1', @p2 = 1001
NHibernate: SELECT employee0_.Id as Id4_0_, employee0_.LastName as LastName4_0_, employee0_.FirstName as FirstName4_0_ FROM "Employee" employee0_ WHERE employee0_.Id=@p0;@p0 = 1001

namespace NHSample1.Domain
{
   public class OrderItem
   {
       public int Id { get; set; }
       public int Quantity { get; set; }
       public Product Product { get; set; }
   }
}

using FluentNHibernate.Mapping;
using NHSample1.Domain;

namespace NHSample1.Mappings
{
   public class OrderItemMapping : ClassMap<OrderItem>
   {
       public OrderItemMapping()
       {
           Not.LazyLoad();
           Id(oi => oi.Id).GeneratedBy.Assigned();
           Map(oi => oi.Quantity).Not.Nullable();
           References(oi => oi.Product).Not.Nullable();
       }
   }
}

using NUnit.Framework;
using NHSample1.Domain;
using FluentNHibernate.Testing;

namespace UnitTests
{
   [TestFixture]
   public class OrderItemMapping_Fixture : FixtureBase
   {
       [Test]
       public void can_correctly_map_order_item()
       {
           var product = new Product
           {
               Name = "Apples",
               UnitPrice = 4.5m,
               Discontinued = true
           };

           new PersistenceSpecification<OrderItem>(Session)
                       .CheckProperty(p => p.Id, 1)
                       .CheckProperty(p => p.Quantity, 5)
                       .CheckReference(p => p.Product, product)
                       .VerifyTheMappings();
       }
   }
}

using System.Collections;
using NHSample1.Domain;

namespace UnitTests
{
   public class CustomEqualityComparer : IEqualityComparer
   {
       public bool Equals(object x, object y)
       {
           if (ReferenceEquals(x, y)) return true;
           if (x == null || y == null) return false;

           if (x is Product && y is Product)
               return (x as Product).Id == (y as Product).Id;

           if (x is Customer && y is Customer)
               return (x as Customer).Id == (y as Customer).Id;

           if (x is Employee && y is Employee)
               return (x as Employee).Id == (y as Employee).Id;

           if (x is OrderItem && y is OrderItem)
               return (x as OrderItem).Id == (y as OrderItem).Id;
          

           return x.Equals(y);
       }

       public int GetHashCode(object obj)
       {
           //شاید وقتی دیگر
           return obj.GetHashCode();
       }
   }
}

new PersistenceSpecification<OrderItem>(Session, new CustomEqualityComparer())

NHibernate: select next_hi from hibernate_unique_key
NHibernate: update hibernate_unique_key set next_hi = @p0 where next_hi = @p1;@p0 = 2, @p1 = 1
NHibernate: INSERT INTO "Product" (Name, UnitPrice, Discontinued, Id) VALUES (@p0, @p1, @p2, @p3);@p0 = 'Apples', @p1 = 4.5, @p2 = True, @p3 = 1001
NHibernate: INSERT INTO "OrderItem" (Quantity, Product_id, Id) VALUES (@p0, @p1, @p2);@p0 = 5, @p1 = 1001, @p2 = 1
NHibernate: SELECT orderitem0_.Id as Id0_1_, orderitem0_.Quantity as Quantity0_1_, orderitem0_.Product_id as Product3_0_1_, product1_.Id as Id3_0_, product1_.Name as Name3_0_, product1_.UnitPrice as UnitPrice3_0_, product1_.Discontinued as Disconti4_3_0_ FROM "OrderItem" orderitem0_ inner join "Product" product1_ on orderitem0_.Product_id=product1_.Id WHERE orderitem0_.Id=@p0;@p0 = 1

using System;
using System.Collections.Generic;

namespace NHSample1.Domain
{
   public class Order
   {
       public int Id { set; get; }
       public DateTime OrderDate { get; set; }
       public Employee Employee { get; set; }
       public Customer Customer { get; set; }
       public IList<OrderItem> OrderItems { get; set; }
   }
}

using NHSample1.Domain;
using FluentNHibernate.Mapping;

namespace NHSample1.Mappings
{
   public class OrderMapping : ClassMap<Order>
   {
       public OrderMapping()
       {
           Not.LazyLoad();
           Id(o => o.Id).GeneratedBy.GuidComb();
           Map(o => o.OrderDate).Not.Nullable();
           References(o => o.Employee).Not.Nullable();
           References(o => o.Customer).Not.Nullable();
           HasMany(o => o.OrderItems)
               .AsList(index => index.Column("ListIndex").Type<int>());
       }
   }
}

using System;
using System.Collections.Generic;
using NUnit.Framework;
using NHSample1.Domain;
using FluentNHibernate.Testing;

namespace UnitTests
{
   [TestFixture]
   public class OrderMapping_Fixture : FixtureBase
   {
       [Test]
       public void can_correctly_map_an_order()
       {
           {
               var product1 =
                   new Product
                   {
                       Name = "Apples",
                       UnitPrice = 4.5m,
                       Discontinued = true
                   };
               var product2 =
                   new Product
                   {
                       Name = "Pears",
                       UnitPrice = 3.5m,
                       Discontinued = false
                   };

               Session.Save(product1);
               Session.Save(product2);

               var items = new List<OrderItem>
                               {
                                   new OrderItem
                                   {
                                       Id = 1,
                                       Quantity = 100,
                                       Product = product1
                                   },
                                   new OrderItem
                                   {
                                       Id = 2,
                                       Quantity = 200,
                                       Product = product2
                                   }
                               };

               var customer = new Customer
               {
                   FirstName = "Vahid",
                   LastName = "Nasiri",
                   AddressLine1 = "Addr1",
                   AddressLine2 = "Addr2",
                   PostalCode = "1234",
                   City = "Tehran",
                   CountryCode = "IR"
               };

               var employee =
                   new Employee
                   {
                       FirstName = "name1",
                       LastName = "lname1"
                   };


              
               var order = new Order
               {
                   Customer = customer,
                   Employee = employee,
                   OrderDate = DateTime.Today,
                   OrderItems = items
               };

               new PersistenceSpecification<Order>(Session, new CustomEqualityComparer())
                   .CheckProperty(o => o.OrderDate, order.OrderDate)
                   .CheckReference(o => o.Customer, order.Customer)
                   .CheckReference(o => o.Employee, order.Employee)
                   .CheckList(o => o.OrderItems, order.OrderItems)
                   .VerifyTheMappings();
           }
       }
   }
}

OrderMapping_Fixture.can_correctly_map_an_order : Passed
NHibernate: select next_hi from hibernate_unique_key
NHibernate: update hibernate_unique_key set next_hi = @p0 where next_hi = @p1;@p0 = 2, @p1 = 1
NHibernate: select next_hi from hibernate_unique_key
NHibernate: update hibernate_unique_key set next_hi = @p0 where next_hi = @p1;@p0 = 3, @p1 = 2
NHibernate: INSERT INTO "Product" (Name, UnitPrice, Discontinued, Id) VALUES (@p0, @p1, @p2, @p3);@p0 = 'Apples', @p1 = 4.5, @p2 = True, @p3 = 1001
NHibernate: INSERT INTO "Product" (Name, UnitPrice, Discontinued, Id) VALUES (@p0, @p1, @p2, @p3);@p0 = 'Pears', @p1 = 3.5, @p2 = False, @p3 = 1002
NHibernate: INSERT INTO "Customer" (FirstName, LastName, AddressLine1, AddressLine2, PostalCode, City, CountryCode, Id) VALUES (@p0, @p1, @p2, @p3, @p4, @p5, @p6, @p7);@p0 = 'Vahid', @p1 = 'Nasiri', @p2 = 'Addr1', @p3 = 'Addr2', @p4 = '1234', @p5 = 'Tehran', @p6 = 'IR', @p7 = 2002
NHibernate: select next_hi from hibernate_unique_key
NHibernate: update hibernate_unique_key set next_hi = @p0 where next_hi = @p1;@p0 = 4, @p1 = 3
NHibernate: INSERT INTO "Employee" (LastName, FirstName, Id) VALUES (@p0, @p1, @p2);@p0 = 'lname1', @p1 = 'name1', @p2 = 3003
NHibernate: INSERT INTO "OrderItem" (Quantity, Product_id, Id) VALUES (@p0, @p1, @p2);@p0 = 100, @p1 = 1001, @p2 = 1
NHibernate: INSERT INTO "OrderItem" (Quantity, Product_id, Id) VALUES (@p0, @p1, @p2);@p0 = 200, @p1 = 1002, @p2 = 2
NHibernate: INSERT INTO "Order" (OrderDate, Employee_id, Customer_id, Id) VALUES (@p0, @p1, @p2, @p3);@p0 = 2009/10/10 12:00:00 ق.ظ, @p1 = 3003, @p2 = 2002, @p3 = 0
NHibernate: UPDATE "OrderItem" SET Order_id = @p0, ListIndex = @p1 WHERE Id = @p2;@p0 = 0, @p1 = 0, @p2 = 1
NHibernate: UPDATE "OrderItem" SET Order_id = @p0, ListIndex = @p1 WHERE Id = @p2;@p0 = 0, @p1 = 1, @p2 = 2
NHibernate: SELECT order0_.Id as Id1_2_, order0_.OrderDate as OrderDate1_2_, order0_.Employee_id as Employee3_1_2_, order0_.Customer_id as Customer4_1_2_, employee1_.Id as Id4_0_, employee1_.LastName as LastName4_0_, employee1_.FirstName as FirstName4_0_, customer2_.Id as Id2_1_, customer2_.FirstName as FirstName2_1_, customer2_.LastName as LastName2_1_, customer2_.AddressLine1 as AddressL4_2_1_, customer2_.AddressLine2 as AddressL5_2_1_, customer2_.PostalCode as PostalCode2_1_, customer2_.City as City2_1_, customer2_.CountryCode as CountryC8_2_1_ FROM "Order" order0_ inner join "Employee" employee1_ on order0_.Employee_id=employee1_.Id inner join "Customer" customer2_ on order0_.Customer_id=customer2_.Id WHERE order0_.Id=@p0;@p0 = 0
NHibernate: SELECT orderitems0_.Order_id as Order4_2_, orderitems0_.Id as Id2_, orderitems0_.ListIndex as ListIndex2_, orderitems0_.Id as Id0_1_, orderitems0_.Quantity as Quantity0_1_, orderitems0_.Product_id as Product3_0_1_, product1_.Id as Id3_0_, product1_.Name as Name3_0_, product1_.UnitPrice as UnitPrice3_0_, product1_.Discontinued as Disconti4_3_0_ FROM "OrderItem" orderitems0_ inner join "Product" product1_ on orderitems0_.Product_id=product1_.Id WHERE orderitems0_.Order_id=@p0;@p0 = 0

SessionSource.BuildSchema(Session, true);

    drop table if exists "OrderItem"

    drop table if exists "Order"

    drop table if exists "Customer"

    drop table if exists "Product"

    drop table if exists "Employee"

    drop table if exists hibernate_unique_key

    create table "OrderItem" (
        Id INTEGER not null,
       Quantity INTEGER not null,
       Product_id INTEGER not null,
       Order_id INTEGER,
       ListIndex INTEGER,
       primary key (Id)
    )

    create table "Order" (
        Id INTEGER not null,
       OrderDate DATETIME not null,
       Employee_id INTEGER not null,
       Customer_id INTEGER not null,
       primary key (Id)
    )

    create table "Customer" (
        Id INTEGER not null,
       FirstName TEXT not null,
       LastName TEXT not null,
       AddressLine1 TEXT not null,
       AddressLine2 TEXT,
       PostalCode TEXT not null,
       City TEXT not null,
       CountryCode TEXT not null,
       primary key (Id)
    )

    create table "Product" (
        Id INTEGER not null,
       Name TEXT not null,
       UnitPrice NUMERIC not null,
       Discontinued INTEGER not null,
       primary key (Id)
    )

    create table "Employee" (
        Id INTEGER not null,
       LastName TEXT,
       FirstName TEXT,
       primary key (Id)
    )

    create table hibernate_unique_key (
         next_hi INTEGER
    )

           var cfg = Fluently.Configure().Database(
              // SQLiteConfiguration.Standard.ShowSql().InMemory
              MsSqlConfiguration
              .MsSql2008
              .ShowSql()
              .ConnectionString("Data Source=(local);Initial Catalog=testdb2009;Integrated Security = true")
               );

    if exists (select 1 from sys.objects where object_id = OBJECT_ID(N'[FK3EF88858466CFBF7]') AND parent_object_id = OBJECT_ID('[OrderItem]'))
alter table [OrderItem]  drop constraint FK3EF88858466CFBF7


    if exists (select 1 from sys.objects where object_id = OBJECT_ID(N'[FK3EF888589F32DE52]') AND parent_object_id = OBJECT_ID('[OrderItem]'))
alter table [OrderItem]  drop constraint FK3EF888589F32DE52


    if exists (select 1 from sys.objects where object_id = OBJECT_ID(N'[FK3117099B1EBA72BC]') AND parent_object_id = OBJECT_ID('[Order]'))
alter table [Order]  drop constraint FK3117099B1EBA72BC


    if exists (select 1 from sys.objects where object_id = OBJECT_ID(N'[FK3117099BB2F9593A]') AND parent_object_id = OBJECT_ID('[Order]'))
alter table [Order]  drop constraint FK3117099BB2F9593A


    if exists (select * from dbo.sysobjects where id = object_id(N'[OrderItem]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [OrderItem]

    if exists (select * from dbo.sysobjects where id = object_id(N'[Order]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [Order]

    if exists (select * from dbo.sysobjects where id = object_id(N'[Customer]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [Customer]

    if exists (select * from dbo.sysobjects where id = object_id(N'[Product]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [Product]

    if exists (select * from dbo.sysobjects where id = object_id(N'[Employee]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [Employee]

    if exists (select * from dbo.sysobjects where id = object_id(N'hibernate_unique_key') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table hibernate_unique_key

    create table [OrderItem] (
        Id INT not null,
       Quantity INT not null,
       Product_id INT not null,
       Order_id INT null,
       ListIndex INT null,
       primary key (Id)
    )

    create table [Order] (
        Id INT not null,
       OrderDate DATETIME not null,
       Employee_id INT not null,
       Customer_id INT not null,
       primary key (Id)
    )

    create table [Customer] (
        Id INT not null,
       FirstName NVARCHAR(50) not null,
       LastName NVARCHAR(50) not null,
       AddressLine1 NVARCHAR(50) not null,
       AddressLine2 NVARCHAR(50) null,
       PostalCode NVARCHAR(10) not null,
       City NVARCHAR(50) not null,
       CountryCode NVARCHAR(2) not null,
       primary key (Id)
    )

    create table [Product] (
        Id INT not null,
       Name NVARCHAR(50) not null,
       UnitPrice DECIMAL(19,5) not null,
       Discontinued BIT not null,
       primary key (Id)
    )

    create table [Employee] (
        Id INT not null,
       LastName NVARCHAR(50) null,
       FirstName NVARCHAR(50) null,
       primary key (Id)
    )

    alter table [OrderItem]
        add constraint FK3EF88858466CFBF7
        foreign key (Product_id)
        references [Product]

    alter table [OrderItem]
        add constraint FK3EF888589F32DE52
        foreign key (Order_id)
        references [Order]

    alter table [Order]
        add constraint FK3117099B1EBA72BC
        foreign key (Employee_id)
        references [Employee]

    alter table [Order]
        add constraint FK3117099BB2F9593A
        foreign key (Customer_id)
        references [Customer]

    create table hibernate_unique_key (
         next_hi INT
    )