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ConsoleApp1/Repository/PersonRepository.cs

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+using System;
+using System.Collections.Generic;
+using ConsoleApp1.Model;
+using ConsoleApp1.ORM;
+
+namespace ConsoleApp1.Repository
+{
+    public interface PersonRepository
+    {
+        /// <summary>
+        /// Get person entity by id
+        /// </summary>
+        /// <param name="id">id</param>
+        /// <returns>person</returns>
+        Person Get(Guid id);
+
+        /// <summary>
+        /// Save person entity
+        /// </summary>
+        /// <param name="person">person</param>
+        void Save(Person person);
+        
+        /// <summary>
+        /// Update person entity
+        /// </summary>
+        /// <param name="person">person</param>
+        void Update(Person person);
+
+        /// <summary>
+        /// Delete person entity
+        /// </summary>
+        /// <param name="person">person</param>
+        void Delete(Person person);
+
+        /// <summary>
+        /// Row count person in db
+        /// </summary>
+        /// <returns>number of rows</returns>
+        long RowCount();
+
+        void Save(IEnumerable<Person> persons);
+    }
+
+    public class PersonRepositoryNHibernate : PersonRepository
+    {
+        public void Save(IEnumerable<Person> persons)
+        {
+            BulkQuery.BulkInsert(persons);
+        }
+        
+        public void Save(Person person)
+        {
+            using var session = NHibernateHelper.OpenSession();
+            using var transaction = session.BeginTransaction();
+            session.Save(person);
+            transaction.Commit();
+        }
+
+        public Person Get(Guid id)
+        {
+            using var session = NHibernateHelper.OpenSession();
+            return session.Get<Person>(id);
+        }
+
+        public void Update(Person person)
+        {
+            using var session = NHibernateHelper.OpenSession();
+            using var transaction = session.BeginTransaction();
+            session.Update(person);
+            transaction.Commit();
+        }
+
+        public void Delete(Person person)
+        {
+            using var session = NHibernateHelper.OpenSession();
+            using var transaction = session.BeginTransaction();
+            session.Delete(person);
+            transaction.Commit();
+        }
+
+        public long RowCount()
+        {
+            using var session = NHibernateHelper.OpenSession();
+            return session.QueryOver<Person>().RowCountInt64();
+        }
+    }
+}

ConsoleApp1/Repository/PersonRepositoryTest.cs

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+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.IO;
+using ConsoleApp1.Model;
+using ConsoleApp1.ORM;
+using NHibernate.Tool.hbm2ddl;
+using NUnit.Framework;
+
+namespace ConsoleApp1.Repository
+{
+    [TestFixture]
+    public class NHibernatePersonRepositoryTest
+    {
+        private PersonRepository _personRepo;
+
+        [SetUp]
+        public void CreateSchema()
+        {
+            DeleteDatabaseIfExists();
+
+            var schemaUpdate = new SchemaUpdate(NHibernateHelper.Configuration);
+            schemaUpdate.Execute(false, true);
+
+            _personRepo = new PersonRepositoryNHibernate();
+        }
+
+        [Test]
+        public void CanSavePerson()
+        {
+            _personRepo.Save(new Person());
+            Assert.AreEqual(1, _personRepo.RowCount());
+        }
+
+        [Test]
+        public void CanGetPerson()
+        {
+            var person = new Person();
+            _personRepo.Save(person);
+            Assert.AreEqual(1, _personRepo.RowCount());
+
+            person = _personRepo.Get(person.Id);
+            Assert.IsNotNull(person);
+        }
+
+        [Test]
+        public void CanUpdatePerson()
+        {
+            var person = new Person();
+            _personRepo.Save(person);
+            Assert.AreEqual(1, _personRepo.RowCount());
+
+            person = _personRepo.Get(person.Id);
+            person.FirstName = "Test";
+            _personRepo.Update(person);
+
+            Assert.AreEqual(1, _personRepo.RowCount());
+            Assert.AreEqual("Test", _personRepo.Get(person.Id).FirstName);
+        }
+
+        [Test]
+        public void CanDeletePerson()
+        {
+            var person = new Person();
+            _personRepo.Save(person);
+            Assert.AreEqual(1, _personRepo.RowCount());
+
+            _personRepo.Delete(person);
+            Assert.AreEqual(0, _personRepo.RowCount());
+        }
+
+        [Test]
+        public void TestBulkInsert()
+        {
+            static IEnumerable<Person> GeneratePersons(int num = 3)
+            {
+                var ret = new Person[num];
+                for (var ii = 0; ii < num; ii++) ret[ii] = new Person {Id = Guid.NewGuid(), FirstName = "bac", LastName = "fif"};
+                return ret;
+            }
+            
+            _personRepo.Save(GeneratePersons(10));
+        }
+
+        [TearDown]
+        public void DeleteDatabaseIfExists()
+        {
+            if (File.Exists("test.db"))
+                File.Delete("test.db");
+        }
+    }
+}