DataObjects.Net - ORM Framework for RAD - Introduction

// --------------------------------------------------------------------------------------------------------------------
// <copyright file="Samples-EntityCreation.cs" company="">
//   
// </copyright>
// <summary>
//   The program.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

namespace DO4_Introduction
{
    using System;
    using System.Diagnostics;

    using DO4_Introduction.Model;

    using Xtensive.Storage;

    /// <summary>
    /// The program.
    /// </summary>
    public partial class Program
    {
        #region Methods

        /// <summary>
        /// The create derived entities.
        /// </summary>
        /// <param name="domain">
        /// The domain.
        /// </param>
        /// <param name="provider">
        /// The provider.
        /// </param>
        private static void CreateDerivedEntities(Domain domain, string provider)
        {
            Console.WriteLine(provider + ": Creating DerivedEntity objects start");
            var stopwatch = new Stopwatch();
            using (Session.Open(domain))
            {
                using (TransactionScope transactionScope = Transaction.Open())
                {
                    new DerivedEntity { DerivedEntityData = "Warmup" };
                    new DerivedEntity { DerivedEntityData = "Warmup" };

                    stopwatch.Start();
                    for (int i = 0; i < 10000; ++i)
                    {
                        new DerivedEntity { DerivedEntityData = "Derived Entity Number: " + i };
                    }

                    transactionScope.Complete();
                    stopwatch.Stop();
                }

                Console.WriteLine(provider + ": Creating DerivedEntity objects finish in " + stopwatch.ElapsedMilliseconds + " mS");
            }
        }

        /// <summary>
        /// The create indexed data entities.
        /// </summary>
        /// <param name="domain">
        /// The domain.
        /// </param>
        /// <param name="provider">
        /// The provider.
        /// </param>
        private static void CreateIndexedDataEntities(Domain domain, string provider)
        {
            Console.WriteLine(provider + ": Creating IndexedDataEntity objects start");
            var stopwatch = new Stopwatch();
            using (Session.Open(domain))
            {
                int dataValue = 0;
                using (TransactionScope transactionScope = Transaction.Open())
                {
                    new IndexedDataEntity { Data = dataValue++ };
                    new IndexedDataEntity { Data = dataValue++ };

                    stopwatch.Start();
                    for (int i = 0; i < 10000; ++i)
                    {
                        new IndexedDataEntity { Data = dataValue++ };
                    }

                    transactionScope.Complete();
                    stopwatch.Stop();
                }

                Console.WriteLine(provider + ": Creating IndexedDataEntity objects finish in " + stopwatch.ElapsedMilliseconds + " mS");
            }
        }

        /// <summary>
        /// The create parent child entities.
        /// </summary>
        /// <param name="domain">
        /// The domain.
        /// </param>
        /// <param name="provider">
        /// The provider.
        /// </param>
        private static void CreateParentChildEntities(Domain domain, string provider)
        {
            Console.WriteLine(provider + ": Creating ParentEntity -> ChildEntity objects start");
            var stopwatch = new Stopwatch();
            using (Session.Open(domain))
            {
                using (TransactionScope transactionScope = Transaction.Open())
                {
                    var parentWarmup = new ParentEntity();
                    new ChildEntity(parentWarmup);
                    new ChildEntity(parentWarmup);
                    new ChildEntity(parentWarmup);

                    stopwatch.Start();
                    for (int i = 0; i < 100; ++i)
                    {
                        var parent = new ParentEntity();
                        for (int j = 0; j < 100; ++j)
                        {
                            new ChildEntity(parent);
                        }
                    }

                    transactionScope.Complete();
                    stopwatch.Stop();
                }

                Console.WriteLine(provider + ": Creating ParentEntity -> ChildEntity objects finish in " + stopwatch.ElapsedMilliseconds + " mS");
            }
        }

        /// <summary>
        /// The create simple entities multiple transactions.
        /// </summary>
        /// <param name="domain">
        /// The domain.
        /// </param>
        /// <param name="provider">
        /// The provider.
        /// </param>
        private static void CreateSimpleEntitiesMultipleTransactions(Domain domain, string provider)
        {
            Console.WriteLine(provider + ": Creating SimpleEntity objects start");
            var stopwatch = new Stopwatch();
            using (Session.Open(domain))
            {
                using (TransactionScope transactionScope = Transaction.Open())
                {
                    new SimpleEntity { Data = "Warmup" };
                    new SimpleEntity { Data = "Warmup" };
                    transactionScope.Complete();
                }

                stopwatch.Start();
                for (int i = 0; i < 10000; ++i)
                {
                    using (TransactionScope transactionScope = Transaction.Open())
                    {
                        new SimpleEntity { Data = "Multiple Transactions Entity Number: " + i };
                        transactionScope.Complete();
                    }
                }

                stopwatch.Stop();

                Console.WriteLine(provider + ": Creating SimpleEntity objects finish in " + stopwatch.ElapsedMilliseconds + " mS");
            }
        }

        /// <summary>
        /// The create simple entities single tansaction.
        /// </summary>
        /// <param name="domain">
        /// The domain.
        /// </param>
        /// <param name="provider">
        /// The provider.
        /// </param>
        private static void CreateSimpleEntitiesSingleTansaction(Domain domain, string provider)
        {
            Console.WriteLine(provider + ": Creating SimpleEntity objects start");
            var stopwatch = new Stopwatch();
            using (Session.Open(domain))
            {
                using (TransactionScope transactionScope = Transaction.Open())
                {
                    new SimpleEntity { Data = "Warmup" };
                    new SimpleEntity { Data = "Warmup" };

                    stopwatch.Start();
                    for (int i = 0; i < 10000; ++ i)
                    {
                        new SimpleEntity { Data = "Single Transaction Entity Number: " + i };
                    }

                    transactionScope.Complete();
                    stopwatch.Stop();
                }

                Console.WriteLine(provider + ": Creating SimpleEntity objects finish in " + stopwatch.ElapsedMilliseconds + " mS");
            }
        }

        #endregion
    }
}