private static void GenerateWorkBusinessEpisode(ITashaPerson person, Schedule workSchedule, Random random, int householdPD,
int workPD, GenerationAdjustment[] generationAdjustments)
{
int freqB = TimeTable.GetFrequency(person, Activity.WorkBasedBusiness, random, householdPD, workPD, generationAdjustments);
for (int i = 0; i < freqB; i++)
{
for (int attempt = 0; attempt < Scheduler.EpisodeSchedulingAttempts; attempt++)
{
if (!TimeTable.GetStartTime(person, Activity.WorkBasedBusiness, random, out Time startTime))
{
continue;
}
if (!TimeTable.GetDuration(person, Activity.WorkBasedBusiness, startTime, random, out Time duration))
{
continue;
}
var endTime = startTime + duration;
if (endTime > Time.EndOfDay + TashaRuntime.EndOfDay + Time.OneQuantum)
{
continue;
}
Episode workEpisode = new ActivityEpisode(new TimeWindow(startTime, startTime + duration),
Activity.WorkBasedBusiness, person);
workSchedule.Insert(workEpisode, random);
break;
}
}
}
private static void ProcessWorkBusiness(ITashaPerson person, Schedule workSchedule, Random random, Episode primWorkEpisode,
int householdPD, int workPD, GenerationAdjustment[] generationAdjustments)
{
Time startTime = primWorkEpisode.StartTime;
Time endTime = primWorkEpisode.EndTime;
int freq = TimeTable.GetFrequency(person, Activity.WorkBasedBusiness, random, Scheduler.MaxFrequency, startTime, endTime,
householdPD, workPD, generationAdjustments);
for (int i = 0; i < freq; i++)
{
var attempt = 0;
while (attempt < Scheduler.EpisodeSchedulingAttempts)
{
attempt++;
if (!TimeTable.GetStartTime(person, Activity.WorkBasedBusiness, freq,
startTime, endTime, random, out Time startTimeB))
{
continue;
}
if (!TimeTable.GetDuration(person, Activity.WorkBasedBusiness, startTimeB, endTime - startTimeB, random, out Time durationB))
{
continue;
}
Episode businessEpisode;
businessEpisode = new ActivityEpisode(new TimeWindow(startTimeB, startTimeB + durationB), Activity.WorkBasedBusiness, person);
if (workSchedule.Insert(businessEpisode, random))
{
break;
}
}
}
}
/// <summary>
/// Return home from work creates a return home from work activity (return home from work may involve
/// going to lunch at home or going to check up on something in the house during work).
/// </summary>
/// <param name="person"></param>
/// <param name="schedule"></param>
/// <param name="episode"></param>
/// <returns></returns>
private static bool ProcessReturnHomeFromWork(ITashaPerson person, Schedule schedule, Random random, Episode episode, int householdPD, int workPD, GenerationAdjustment[] generationAdjustments)
{
int freq = 0;
//the current work schedule doesn't allow for a return from work activity
if (episode.StartTime > Scheduler.MaxPrimeWorkStartTimeForReturnHomeFromWork ||
episode.Duration < Scheduler.MinPrimaryWorkDurationForReturnHomeFromWork)
{
return(false);
}
//End time of work to home activity
Time endTime = episode.EndTime + new Time(0.3f) < Scheduler.ReturnHomeFromWorkMaxEndTime ?
episode.EndTime + new Time(0.3f) : Scheduler.ReturnHomeFromWorkMaxEndTime;
freq = TimeTable.GetFrequency(person, Activity.ReturnFromWork, random, 1, episode.StartTime + new Time(0.3f), endTime,
householdPD, workPD, generationAdjustments);
if (freq == 1)
{
IZone homeZone = person.Household.HomeZone;
Time HalfAnHour = new Time()
{
Minutes = 30
};
Time MaxEndTime = ((episode.EndTime - HalfAnHour) < Scheduler.ReturnHomeFromWorkMaxEndTime) ? (episode.EndTime - HalfAnHour) : Scheduler.ReturnHomeFromWorkMaxEndTime;
Time startTime;
if (!TimeTable.GetStartTime(person, Activity.ReturnFromWork
, freq
, episode.StartTime + HalfAnHour
, MaxEndTime, random, out startTime))
{
return(false);
}
Time maxDuration = new Time(Math.Min((Scheduler.ReturnHomeFromWorkMaxEndTime - Time.OneHour).ToFloat(),
(episode.EndTime - HalfAnHour - startTime).ToFloat()));
Time duration;
if (!TimeTable.GetDuration(person, Activity.ReturnFromWork, startTime, maxDuration, random, out duration))
{
// reject
return(false);
}
Episode returnFromWorkEpisode;
returnFromWorkEpisode = new ActivityEpisode(0,
new TimeWindow(startTime, startTime + duration), Activity.ReturnFromWork,
person);
returnFromWorkEpisode.Zone = homeZone;
schedule.Insert(returnFromWorkEpisode, random);
}
return(true);
}
/// <summary>
/// Secondary work creates a secondary work activity for person
/// </summary>
/// <param name="person"></param>
/// <param name="schedule"></param>
/// <param name="random"></param>
/// <param name="primaryWorkEpisode"></param>
/// <param name="householdPD"></param>
/// <param name="workPD"></param>
/// <param name="generationAdjustments"></param>
private static void ProcessSecondaryWork(ITashaPerson person, Schedule schedule, Random random, Episode primaryWorkEpisode, int householdPD,
int workPD, GenerationAdjustment[] generationAdjustments)
{
if (random == null)
{
throw new ArgumentNullException(nameof(random));
}
//can only work if finish primary work by 7:00PM
if (primaryWorkEpisode.EndTime < Scheduler.SecondaryWorkThreshold)
{
int freqR;
//getting earliest possible startTime
Time hourAfterWork = primaryWorkEpisode.EndTime + Time.OneHour;
Time minStartTime = hourAfterWork > Scheduler.SecondaryWorkMinStartTime ? hourAfterWork : Scheduler.SecondaryWorkMinStartTime;
freqR = TimeTable.GetFrequency(person, Activity.SecondaryWork, random, 10, minStartTime, Time.EndOfDay,
householdPD, workPD, generationAdjustments);
for (int i = 0; i < freqR; i++)
{
//zone same as work zone
IZone zone = primaryWorkEpisode.Zone.ZoneNumber == Scheduler.Tasha.ZoneSystem.RoamingZoneNumber
? Scheduler.LocationChoiceModel.GetLocationHomeBased(Activity.SecondaryWork, person.Household.HomeZone, random)
: primaryWorkEpisode.Zone;
if (!TimeTable.GetStartTime(person, primaryWorkEpisode.ActivityType, freqR, minStartTime, Time.EndOfDay, random, out Time startTimeR))
{
//TODO: We might want to reconsider this, skipping instead of just throwing an exception
//throw new XTMFRuntimeException("Unable to find a start time for a primary work episode");
return;
}
if (!TimeTable.GetDuration(person, Activity.SecondaryWork, startTimeR, Time.EndOfDay - startTimeR, random, out Time durationR))
{
//throw new XTMFRuntimeException("Unable to find a duration for a primary work episode");
return;
}
//inserting secondary work into schedule
Episode secondaryWorkEpisode;
secondaryWorkEpisode = new ActivityEpisode(new TimeWindow(startTimeR, startTimeR + durationR),
Activity.SecondaryWork, person)
{
Zone = zone
};
schedule.Insert(secondaryWorkEpisode, random);
}
}
}
private static void ProcessWorkAtHome(ITashaPerson person, Schedule workSchedule, Random random, int householdPD,
int workPD, GenerationAdjustment[] generationAdjustments)
{
int freq_A = TimeTable.GetFrequency(person, Activity.WorkAtHomeBusiness, random, householdPD,
workPD, generationAdjustments);
Time duration, startTime;
for (int i = 0; i < freq_A; i++)
{
bool success = false;
short attempt = 0;
while (!success && (attempt < Scheduler.EpisodeSchedulingAttempts))
{
if (!TimeTable.GetStartTime(person, Activity.WorkAtHomeBusiness, freq_A, random, out startTime))
{
success = false;
attempt++;
continue;
}
if (!TimeTable.GetDuration(person, Activity.WorkAtHomeBusiness,
startTime, Time.EndOfDay - startTime, random, out duration))
{
success = false;
attempt++;
continue;
}
Time endTime = startTime + duration;
SchedulerHousehold.CheckAndUpdateLatestWorkingTime(person.Household,
endTime);
Episode wahBusinessEpisode;
wahBusinessEpisode = new ActivityEpisode(0,
new TimeWindow(startTime, endTime), Activity.WorkAtHomeBusiness, person);
if (!workSchedule.Insert(wahBusinessEpisode, random))
{
success = false;
attempt++;
}
else
{
success = true;
}
}
}
}
private static bool GenerateWorkEpisodes(this ITashaHousehold household, Random random, GenerationAdjustment[] generationAdjustments)
{
var householdPD = household.HomeZone.PlanningDistrict;
foreach (ITashaPerson person in household.Persons)
{
// people need to be older than "11" to be allowed to work
if (person.Age < Scheduler.MinimumWorkingAge)
{
continue;
}
// Check to see if they are in a regular job type case
Project workProject = person.GetWorkProject();
Schedule workSchedule = workProject.Schedule;
if ((person.Occupation == Occupation.NotEmployed) | (person.Occupation == Occupation.Unknown))
{
continue;
}
if (((person.EmploymentStatus == TTSEmploymentStatus.FullTime) | (person.EmploymentStatus == TTSEmploymentStatus.PartTime)))
{
var empZone = person.EmploymentZone;
int workPD = empZone == null ? 0 : empZone.PlanningDistrict;
if (person.EmploymentZone == null)
{
//continue;
throw new XTMFRuntimeException(TashaRuntime, "There was a person whom had no employment zone however was a full-time/part-time worker!");
}
//Employment zone doesn't exist so generate our own based on distributions
if (person.EmploymentZone.ZoneNumber == TashaRuntime.ZoneSystem.RoamingZoneNumber)
{
GenerateWorkBusinessEpisode(person, workSchedule, random, householdPD, workPD, generationAdjustments);
continue;
}
int freq = TimeTable.GetFrequency(person, Activity.PrimaryWork, random, householdPD, workPD, generationAdjustments);
if (freq <= 0)
{
continue;
}
Time startTime = Time.Zero;
Time duration = Time.Zero;
bool success = false;
for (int i = 0; i < freq; i++)
{
for (int attempts = 0; attempts < Scheduler.EpisodeSchedulingAttempts; attempts++)
{
// If we use an and here the compiler can't prove that we assign to duration
if (!TimeTable.GetStartTime(person, Activity.PrimaryWork, freq, random, out startTime))
{
continue;
}
if (TimeTable.GetDuration(person, Activity.PrimaryWork, startTime, random, out duration))
{
// if we got the duration, success lets continue on
success = true;
break;
}
}
// if we were unable to get a duration
if (!success)
{
// try the next person
continue;
}
Time endTime = startTime + duration;
CheckAndUpdateLatestWorkingTime(person.Household,
endTime);
Episode primWorkEpisode;
primWorkEpisode = new ActivityEpisode(new TimeWindow(startTime, endTime),
Activity.PrimaryWork, person)
{
Zone = person.EmploymentZone
};
if (!workSchedule.Insert(primWorkEpisode, random) && i == 0)
{
throw new XTMFRuntimeException(TashaRuntime, "Failed to insert the primary work episode into the work project!");
}
//set up work business activities
ProcessWorkBusiness(person, workSchedule, random, primWorkEpisode, householdPD, workPD, generationAdjustments);
//set up secondary work activities
ProcessSecondaryWork(person, workSchedule, random, primWorkEpisode, householdPD, workPD, generationAdjustments);
//set up return home from work activities
ProcessReturnHomeFromWork(person, workSchedule, random, primWorkEpisode, householdPD, workPD, generationAdjustments);
}
}
// Check to see if they work from home
else if (person.Age >= 19 &&
((person.EmploymentStatus == TTSEmploymentStatus.WorkAtHome_FullTime)
| (person.EmploymentStatus == TTSEmploymentStatus.WorkAtHome_PartTime)))
{
ProcessWorkAtHome(person, workSchedule, random, householdPD, householdPD, generationAdjustments);
}
// If they don't work, just continue on
}
return(true);
}
private static bool GenerateSchoolEpisodes(this ITashaHousehold household, Random random, GenerationAdjustment[] generationAdjustments)
{
var householdPD = household.HomeZone.PlanningDistrict;
foreach (ITashaPerson person in household.Persons)
{
if (person.StudentStatus == StudentStatus.FullTime ||
person.StudentStatus == StudentStatus.PartTime)
{
if (person.Age >= 11)
{
var empZone = person.EmploymentZone;
int workPD = empZone == null ? 0 : empZone.PlanningDistrict;
var freq = TimeTable.GetFrequency(person, Activity.School, random, householdPD, workPD, generationAdjustments);
//if there is a school activity generated
for (int i = 0; i < freq; i++)
{
bool success = false;
short attempt = 0;
int maxAttempts = Scheduler.EpisodeSchedulingAttempts;
while (!success && (attempt < maxAttempts))
{
attempt++;
//get start time end time and duration
if (!TimeTable.GetStartTime(person, Activity.School, random, out Time startTime))
{
continue;
}
if (!TimeTable.GetDuration(person, Activity.School, startTime, random, out Time duration))
{
continue;
}
if (duration != Time.Zero) // no valid duration
{
var endTime = startTime + duration;
if (endTime > Time.EndOfDay + TashaRuntime.EndOfDay + Time.OneQuantum)
{
continue;
}
//instantiate temporary school episode;
Schedule schoolSchedule;
Episode schoolEpisode;
schoolEpisode =
new ActivityEpisode(new TimeWindow(startTime, startTime + duration),
Activity.School, person)
{
Zone = person.SchoolZone ?? person.Household.HomeZone
};
Project schoolProject = person.GetSchoolProject();
schoolSchedule = schoolProject.Schedule;
success = schoolSchedule.Insert(schoolEpisode, random);
}
}
}
}
else if (person.Age >= 6)
{
//this child is in kindergarten
//generate random number between 0 and 1
Time startTime, endTime;
startTime = Scheduler.SchoolMorningStart;
endTime = Scheduler.SchoolAfternoonEnd;
Schedule schoolSchedule;
Episode schoolEpisode;
schoolEpisode =
new ActivityEpisode(new TimeWindow(startTime, endTime),
Activity.School, person)
{
Zone = person.SchoolZone ?? person.Household.HomeZone
};
Project schoolProject = person.GetSchoolProject();
schoolSchedule = schoolProject.Schedule;
schoolSchedule.Insert(schoolEpisode, random);
}
else if (person.Age == 5)
{
//this child is in kindergarten
//generate random number between 0 and 1
int randNum = random.Next(0, 1);
Time startTime, endTime;
if (randNum <= 0.5) //morning shift
{
//morning shift
startTime = Scheduler.SchoolMorningStart;
endTime = Scheduler.SchoolMorningEnd;
}
else
{
//afternoon shift
startTime = Scheduler.SchoolAfternoonStart;
endTime = Scheduler.SchoolAfternoonEnd;
}
Schedule schoolSchedule;
Episode schoolEpisode;
schoolEpisode =
new ActivityEpisode(new TimeWindow(startTime, endTime),
Activity.School, person)
{
Zone = person.SchoolZone ?? person.Household.HomeZone
};
Project schoolProject = person.GetSchoolProject();
schoolSchedule = schoolProject.Schedule;
schoolSchedule.Insert(schoolEpisode, random);
}
}
}
return(true);
}
private static bool GenerateJointOtherEpisodes(this ITashaHousehold household, Random random, GenerationAdjustment[] generationAdjustments)
{
var householdPD = household.HomeZone.PlanningDistrict;
//make sure there at least 2 people and one adult
if ((household.Persons.Length >= 2) & (household.NumberOfAdults > 0))
{
int freqJ = TimeTable.GetFrequency(household, Activity.JointOther, random, householdPD, 0, generationAdjustments);
int numEpisodeAdults = Distribution.GetNumAdultsJointEpisode(household, random,
Activity.JointOther);
for (int i = 0; i < freqJ; i++)
{
bool success = false;
int attempt = 0;
while (!success && attempt < Scheduler.EpisodeSchedulingAttempts)
{
if (!TimeTable.GetStartTime(household, Activity.JointOther, freqJ, random, out Time startTime))
{
attempt++;
continue;
}
if (!TimeTable.GetDuration(household, Activity.JointOther, startTime, random, out Time duration))
{
attempt++;
continue;
}
if (duration == Time.Zero || startTime == Time.Zero)
{
attempt++;
}
else
{
Time endTime = startTime + duration;
List <ITashaPerson> availableAdults = new List <ITashaPerson>();
foreach (ITashaPerson person in household.Persons)
{
Time workSchoolStartTime = SchedulerPerson.GetWorkSchoolStartTime(person);
Time workSchoolEndTime = SchedulerPerson.GetWorkSchoolEndTime(person);
bool available = false;
if (workSchoolStartTime > endTime ||
workSchoolEndTime < startTime ||
workSchoolStartTime == Time.Zero)
{
available = true;
}
if (person.Age >= 16 && available)
{
availableAdults.Add(person);
}
}
if (availableAdults.Count >= numEpisodeAdults && availableAdults.Count > 0)
{
Episode jointOtherEpisode;
var owner = availableAdults[0];
jointOtherEpisode = new ActivityEpisode(new TimeWindow(startTime, endTime), Activity.JointOther, owner);
for (int j = 0; j < numEpisodeAdults; j++)
{
jointOtherEpisode.AddPerson(availableAdults[j]);
}
Project jointOtherProject = household.GetJointOtherProject();
Schedule jointOtherSchedule = jointOtherProject.Schedule;
bool inserted = jointOtherSchedule.Insert(jointOtherEpisode, random);
success = true;
if (!inserted)
{
success = false;
attempt++;
}
}
else
{
attempt++;
}
}
}
}
}
return(true);
}
private static bool GenerateJointMarketEpisodes(this ITashaHousehold household, Random random, GenerationAdjustment[] generationAdjustment)
{
var householdPD = household.HomeZone.PlanningDistrict;
// initialize available adults
var availableAdults = new List <ITashaPerson>(household.Persons.Length);
// We can only do this with households with more than one person
if (household.Persons.Length >= 2 && household.NumberOfAdults > 0)
{
// Figure out how many times this home is going to go on a joint market trip
int howManyTimes = TimeTable.GetFrequency(household, Activity.JointMarket, random, householdPD, 0, generationAdjustment);
// Processes each of those trips
for (int i = 0; i < howManyTimes; i++)
{
int numEpisodeAdults = Distribution.GetNumAdultsJointEpisode(household, random,
Activity.JointMarket);
bool success = false;
// continue to try until either we get it to work or we fail to schedule this episode
for (int attempt = 0; !success && attempt < Scheduler.EpisodeSchedulingAttempts; attempt++)
{
if (!TimeTable.GetStartTime(household, Activity.JointMarket, random, out Time startTime))
{
continue;
}
if (!TimeTable.GetDuration(household, Activity.JointMarket, startTime, random, out Time duration))
{
continue;
}
// Now that we have our start time and duration, compute our end time
Time endTime = startTime + duration;
if (availableAdults.Count > 0)
{
availableAdults.Clear();
}
Time workSchoolStartTime, workSchoolEndTime;
bool available;
foreach (var person in household.Persons)
{
workSchoolStartTime = SchedulerPerson.GetWorkSchoolStartTime(person);
workSchoolEndTime = SchedulerPerson.GetWorkSchoolEndTime(person);
// this person is available if
available = (workSchoolStartTime > endTime) | (workSchoolEndTime < startTime) | (workSchoolStartTime == Time.Zero);
if (person.Age >= 16 && available)
{
availableAdults.Add(person);
}
}
if ((availableAdults.Count > 0) & (availableAdults.Count >= numEpisodeAdults))
{
Episode jointMarketEpisode;
jointMarketEpisode = new ActivityEpisode(new TimeWindow(startTime, endTime), Activity.JointMarket,
availableAdults[0]);
foreach (ITashaPerson adult in availableAdults)
{
jointMarketEpisode.AddPerson(adult);
}
Project jointMarketProject = household.GetJointMarketProject();
Schedule jointMarketSchedule = jointMarketProject.Schedule;
bool insert = jointMarketSchedule.Insert(jointMarketEpisode, random);
success = insert;
}
}
}
}
return(true);
}
private static bool GenerateIndividualOtherEpisodes(this ITashaHousehold household, Random random, GenerationAdjustment[] generationAdjustments)
{
int householdPD = household.HomeZone.PlanningDistrict;
foreach (var person in household.Persons)
{
if (!person.Child)
{
var empZone = person.EmploymentZone;
int workPD = empZone == null ? 0 : empZone.PlanningDistrict;
int freqO = TimeTable.GetFrequency(person, Activity.IndividualOther, random, householdPD, workPD, generationAdjustments);
int outerAttempts = 0;
for (int i = 0; i < freqO; i++)
{
bool success = false;
for (int attempt = 0; !success && (attempt < Scheduler.EpisodeSchedulingAttempts); attempt++)
{
if (!TimeTable.GetStartTime(person, Activity.IndividualOther, freqO, random, out Time startTimeO))
{
continue;
}
if (!TimeTable.GetDuration(person, Activity.IndividualOther, startTimeO, random, out Time durationO))
{
continue;
}
var endTime = startTimeO + durationO;
if (endTime > Time.EndOfDay + TashaRuntime.EndOfDay + Time.OneQuantum)
{
continue;
}
Episode otherEpisode;
otherEpisode = new ActivityEpisode(new TimeWindow(startTimeO, endTime),
Activity.IndividualOther, person);
Project workProject = person.GetWorkProject();
Schedule workProjSchedule = workProject.Schedule;
Project schoolProject = person.GetSchoolProject();
Schedule schoolProjSchedule = schoolProject.Schedule;
Time overlap = workProjSchedule.CheckOverlap(otherEpisode) + schoolProjSchedule.CheckOverlap(otherEpisode);
float percentOverlap = overlap / durationO;
if (percentOverlap < Scheduler.PercentOverlapAllowed || attempt == Scheduler.EpisodeSchedulingAttempts - 1)
{
Project otherProject = person.GetOtherProject();
Schedule otherSchedule = otherProject.Schedule;
if (otherSchedule.Insert(otherEpisode, random))
{
//inserted ok
success = true;
}
}
}
if ((outerAttempts++) < Scheduler.EpisodeSchedulingAttempts && !success)
{
i = -1;
Project otherProject = person.GetOtherProject();
Schedule otherSchedule = otherProject.Schedule;
otherSchedule.Clear();
}
}
}
}
return(true);
}
private static bool GenerateIndividualMarketEpisodes(this ITashaHousehold household, Random random, GenerationAdjustment[] generationAdjustments)
{
int householdPD = household.HomeZone.PlanningDistrict;
foreach (var person in household.Persons)
{
if (!person.Child)
{
var empZone = person.EmploymentZone;
int workPD = empZone == null ? 0 : empZone.PlanningDistrict;
int freqI = TimeTable.GetFrequency(person, Activity.Market, random, householdPD, workPD, generationAdjustments);
int outerAttempts = 0;
for (int j = 0; j < freqI; ++j)
{
bool success = false;
for (int attempt = 0; attempt < Scheduler.EpisodeSchedulingAttempts && !success; attempt++)
{
if (!TimeTable.GetStartTime(person, Activity.Market, random, out Time startTime))
{
continue;
}
if (!TimeTable.GetDuration(person, Activity.Market, startTime, random, out Time duration))
{
continue;
}
var endTime = startTime + duration;
if (endTime > Time.EndOfDay + TashaRuntime.EndOfDay + Time.OneQuantum)
{
continue;
}
//instantiate a temporary individual market episode on the heap space and store pointer in p_marketEpisode
var window = new TimeWindow(startTime, startTime + duration);
Episode marketEpisode = new ActivityEpisode(window, Activity.Market, person);
Project workProject = person.GetWorkProject();
Schedule workProjSchedule = workProject.Schedule;
Project schoolProject = person.GetSchoolProject();
Schedule schoolProjSchedule = schoolProject.Schedule;
Time overlap = workProjSchedule.CheckOverlap(marketEpisode) + schoolProjSchedule.CheckOverlap(marketEpisode);
float percentOverlap = overlap / duration;
if (percentOverlap < Scheduler.PercentOverlapAllowed || attempt == Scheduler.EpisodeSchedulingAttempts - 1)
{
Project marketProject = person.GetMarketProject();
Schedule marketSchedule = marketProject.Schedule;
if (marketSchedule.Insert(marketEpisode, random))
{
//inserted ok
success = true;
}
}
}
if ((outerAttempts++) < Scheduler.EpisodeSchedulingAttempts && !success)
{
j = -1;
Project marketProject = person.GetMarketProject();
Schedule marketSchedule = marketProject.Schedule;
marketSchedule.Clear();
}
}
}
}
return(true);
}