public void ScheduleByAddingConstraints()
{
bool disableTrace = true;
var engine = (null as IConferenceOptimizer).Create(disableTrace);
var sessions = new SessionsCollection();
var rooms = new List <Room>();
var timeslots = new List <Timeslot>();
#region Presenters
// No restrictions on when they present
var presenterJustinJames = Presenter.Create(10, "Justin James");
var presenterWendySteinman = Presenter.Create(12, "Wendy Steinman");
var presenterHattanShobokshi = Presenter.Create(16, "Hattan Shobokshi");
var presenterRyanMilbourne = Presenter.Create(22, "Ryan Milbourne");
var presenterIotLaboratory = Presenter.Create(27, "IOT Laboratory");
// Prefers the last 2 sessions of the day
var preferredTimeslotsMaxNodland = new int[] { 3, 4 };
var presenterMaxNodland = Presenter.Create(23, "Max Nodland", new int[] { }, preferredTimeslotsMaxNodland);
// Doesn't like morning sessions
var preferredTimeslotsBarryStahl = new int[] { 3, 4 };
var presenterBarryStahl = Presenter.Create(24, "Barry Stahl", new int[] { }, preferredTimeslotsBarryStahl);
// Doesn't like 1st session of morning & afternoon
var preferredTimeslotsJustineCocci = new int[] { 2, 4 };
var presenterJustineCocci = Presenter.Create(25, "Justine Cocci", new int[] { }, preferredTimeslotsJustineCocci);
// Prefers 1st session of the day
var preferredTimeslotsChrisGriffith = new int[] { 1 };
var presenterChrisGriffith = Presenter.Create(26, "Chris Griffith", new int[] { }, preferredTimeslotsChrisGriffith);
// Flying in and out so only available during the middle of the day
var unavailableTimeslotsScottGu = new int[] { 1, 4 };
var presenterScottGu = Presenter.Create(28, "Scott Guthrie", unavailableTimeslotsScottGu);
// Flying in together so only available toward the end of the day
var unavailableTimeslotsScottHanselman = new int[] { 1, 2 };
var presenterScottHanselman = Presenter.Create(29, "Scott Hanselman", unavailableTimeslotsScottHanselman);
var unavailableTimeslotsDamianEdwards = new int[] { 1, 2 };
var presenterDamianEdwards = Presenter.Create(30, "Damian Edwards", unavailableTimeslotsDamianEdwards);
#endregion
#region Sessions
var sessionPublicSpeaking = sessions.Add(12, "Everyone is Public Speaker", (int)Topic.None, presenterJustinJames);
var sessionTimeyWimey = sessions.Add(14, "Timey-Wimey Stuff", null, presenterWendySteinman);
var sessionBitcoin101 = sessions.Add(24, "Bitcoin 101", (int)Topic.None, presenterRyanMilbourne);
var sessionBlockchain101 = sessions.Add(25, "Blockchain 101", (int)Topic.None, presenterRyanMilbourne);
var sessionRapidRESTDev = sessions.Add(26, "Rapid REST Dev w/Node & Sails", (int)Topic.None, presenterJustinJames);
var sessionNativeMobileDev = sessions.Add(27, "Native Mobile Dev With TACO", (int)Topic.None, presenterJustinJames);
var sessionReduxIntro = sessions.Add(28, "Redux:Introduction", (int)Topic.None, presenterMaxNodland);
var sessionReactGettingStarted = sessions.Add(29, "React:Getting Started", (int)Topic.None, presenterMaxNodland);
var sessionDevSurveyOfAI = sessions.Add(30, "Devs Survey of AI", (int)Topic.None, presenterBarryStahl);
var sessionMLIntro = sessions.Add(31, "ML:Intro to Image & Text Analysis", (int)Topic.None, presenterJustineCocci);
var sessionChatbotsIntroInNode = sessions.Add(32, "ChatBots:Intro using Node", (int)Topic.None, presenterJustineCocci);
var sessionAccidentalDevOps = sessions.Add(33, "Accidental DevOps:CI for .NET", (int)Topic.None, presenterHattanShobokshi);
var sessionWhatIsIonic = sessions.Add(34, "What is Ionic", (int)Topic.None, presenterChrisGriffith);
var sessionEverythingCloud = sessions.Add(41, "Everything about Cloud", (int)Topic.None, presenterScottGu);
var sessionFunnyMobileDev = sessions.Add(42, "Funny Mobile Development", (int)Topic.None, presenterScottHanselman);
var sessionMobileForNerdz = sessions.Add(43, "Mobile for Nerdz", (int)Topic.None, presenterScottHanselman);
var sessionDotNetCoreAwesomeness = sessions.Add(44, ".NET Core Awesomeness", (int)Topic.None, presenterDamianEdwards);
var sessionDotNetStandard20 = sessions.Add(45, ".NET Standard 2.0", (int)Topic.None, presenterDamianEdwards);
#endregion
#region Session dependencies
sessionBlockchain101.AddDependency(sessionBitcoin101);
#endregion
#region Timeslots
timeslots.Add(Timeslot.Create(1, 9.5));
timeslots.Add(Timeslot.Create(2, 11));
timeslots.Add(Timeslot.Create(3, 13));
timeslots.Add(Timeslot.Create(4, 14.5));
#endregion
#region Rooms
rooms.Add(Room.Create(1, 10)); // Unex 127
rooms.Add(Room.Create(2, 10)); // Unex 126
rooms.Add(Room.Create(3, 10, new int[] { 3, 4 })); // Unex 110 -- Only available in AM
rooms.Add(Room.Create(4, 10)); // Unex 107
rooms.Add(Room.Create(5, 10)); // Unex 106
#endregion
#region Timeslots out-of-favor for each presenter
var presenterUnfavoredTimeslots = new List <Tuple <Presenter, int> >();
// This list is built separately so it maintains the order
// in which the requests were submitted. It could also be built
// by negating the list of preferred timeslots for each presenter
// Prefers the last 2 sessions of the day
presenterUnfavoredTimeslots.Add(presenterMaxNodland, 1);
presenterUnfavoredTimeslots.Add(presenterMaxNodland, 2);
// Doesn't like morning sessions
presenterUnfavoredTimeslots.Add(presenterBarryStahl, 1);
presenterUnfavoredTimeslots.Add(presenterBarryStahl, 2);
// Doesn't like 1st session of morning & afternoon
presenterUnfavoredTimeslots.Add(presenterJustineCocci, 1);
presenterUnfavoredTimeslots.Add(presenterJustineCocci, 3);
// Prefers 1st session of the day
presenterUnfavoredTimeslots.Add(presenterChrisGriffith, 2);
presenterUnfavoredTimeslots.Add(presenterChrisGriffith, 3);
presenterUnfavoredTimeslots.Add(presenterChrisGriffith, 4);
#endregion
#region Create the schedule
// Note: We want this to throw an exception here if it is infeasible
// since this is the least restrictive it could ever be.
IEnumerable <Assignment> assignments = engine.Process(sessions, rooms, timeslots);
var lastSuccessfulAssignments = assignments.Clone();
foreach (var unfavoredTimeslot in presenterUnfavoredTimeslots)
{
int currentPresenterId = unfavoredTimeslot.Item1.Id;
var currentPresenter = sessions.First(s => s.Presenters.Any(p => p.Id == currentPresenterId)).Presenters.First(p => p.Id == currentPresenterId);
int unfavoredTimeslotId = unfavoredTimeslot.Item2;
try
{
currentPresenter.UnavailableForTimeslots = currentPresenter.UnavailableForTimeslots.Add(unfavoredTimeslotId);
assignments = engine.Process(sessions, rooms, timeslots);
lastSuccessfulAssignments = assignments;
Console.WriteLine($"Successfully prevented assignment of {unfavoredTimeslot.Item1.Name} to Timeslot {unfavoredTimeslotId}");
}
catch (NoFeasibleSolutionsException nfs)
{
Console.WriteLine($"Unable to prevent assignment of {unfavoredTimeslot.Item1.Name} to Timeslot {unfavoredTimeslotId}");
lastSuccessfulAssignments.WriteSchedule(sessions);
Console.WriteLine();
currentPresenter.UnavailableForTimeslots = currentPresenter.UnavailableForTimeslots.Remove(unfavoredTimeslotId);
}
}
#endregion
// Display the results
lastSuccessfulAssignments.WriteSchedule(sessions);
}
