public List<List<Point>> PrepareData(Speciality speciality, short polinom)
{
var topMonthPayments = GetMonthPayments((int)speciality.TopPrice);
var middleMonthPayments = GetMonthPayments((int)speciality.MiddlePrice);
var lowMonthPayments = GetMonthPayments((int)speciality.LowPrice);
var topSummaryPayments = GetSummaryPayments((int)speciality.TopPrice);
var middleSummaryPayments = GetSummaryPayments((int)speciality.MiddlePrice);
var lowSummaryPayments = GetSummaryPayments((int)speciality.LowPrice);
result.Add(Point.InitList(topMonthPayments));
result.Add(Point.InitList(middleMonthPayments));
result.Add(Point.InitList(lowMonthPayments));
result.Add(Point.InitList(1));
result.Add(Point.InitList(1));
result.Add(Point.InitList(1));
result.Add(new List<Point>(yearsOfStudying)); //salaries per month
result.Add(new List<Point>(yearsOfStudying)); //salaries summary
Point point = new Point(speciality.StartOfWorking);
result[monthSalaryIndex].Add(point);
result[summarySalaryIndex].Add(point);
InitPointsOnPayments(0, 3);
InitPointsOnPayments(1, 4);
InitPointsOnPayments(2, 5);
InitSalaries(speciality, polinom);
return result;
}
public NodeModel()
{
Region = new Region();
City = new City();
University = new University();
Faculty = new Faculty();
Speciality = new Speciality();
FacultyToSpeciality = new FacultyToSpeciality();
}
public bool TrySave(Speciality editedModel)
{
bool result;
try
{
provider.Update(editedModel);
result = true;
}
catch
{
result = false;
}
return result;
}
public void Create(Speciality model)
{
ClearCache();
provider.Create(model);
}
public List<NodeModel> Parse()
{
if (!OpenDataFile(filePath))
return null;
var results = new List<NodeModel>();
foreach(XElement region in document.Root.Elements())
{
if (String.IsNullOrEmpty(region.Attribute("name").Value) || regionList.Contains(region.Attribute("name").Value))
continue;
var regionModel = new Region();
regionList.Add(region.Attribute("name").Value);
regionModel.Name = region.Attribute("name").Value;
regionModel.Fields.Add(GetKey(), translator.Translate(regionModel.Name, Translator.Languages.Uk, Translator.Languages.En));
foreach(XElement city in region.Elements())
{
if (String.IsNullOrEmpty(city.Attribute("name").Value) || cityList.Contains(city.Attribute("name").Value))
continue;
var cityModel = new City();
cityList.Add(city.Attribute("name").Value);
cityModel.Name = city.Attribute("name").Value;
cityModel.Region = regionModel;
cityModel.Fields.Add(GetKey(), translator.Translate(cityModel.Name, Translator.Languages.Uk, Translator.Languages.En));
foreach (XElement university in city.Elements())
{
if (String.IsNullOrEmpty(university.Attribute("name").Value) || universityList.Contains(university.Attribute("name").Value))
continue;
var universityModel = new University();
universityList.Add(university.Attribute("name").Value);
universityModel.Name = university.Attribute("name").Value;
universityModel.City = cityModel;
universityModel.Fields.Add(GetKey(), translator.Translate(universityModel.Name, Translator.Languages.Uk, Translator.Languages.En));
foreach (XElement faculty in university.Elements())
{
if (String.IsNullOrEmpty(faculty.Attribute("name").Value))
continue;
var facultyModel = new Faculty();
facultyModel.University = universityModel;
facultyModel.Name = faculty.Attribute("name").Value;
facultyModel.Fields.Add(GetKey(), translator.Translate(facultyModel.Name, Translator.Languages.Uk, Translator.Languages.En));
foreach(XElement speciality in faculty.Elements())
{
if (String.IsNullOrEmpty(speciality.Attribute("name").Value))
continue;
var specialityModel = new Speciality();
var facultyToSpecialityModel = new FacultyToSpeciality();
specialityModel.Name = speciality.Attribute("name").Value;
specialityModel.Fields.Add(GetKey(), translator.Translate(specialityModel.Name, Translator.Languages.Uk, Translator.Languages.En));
facultyToSpecialityModel.Speciality = specialityModel;
facultyToSpecialityModel.Faculty = facultyModel;
var node = new NodeModel
{
Region = regionModel,
City = cityModel,
University = universityModel,
Faculty = facultyModel,
Speciality = specialityModel,
FacultyToSpeciality = facultyToSpecialityModel
};
results.Add(node);
}
}
}
}
}
return results;
}
private IApproximator InitAproximator(Speciality speciality, short polinom)
{
var x = new List<int>();
var y = new List<int>();
var tmp = speciality.Salaries.SkipWhile(pair => pair.Value == null).ToList();
foreach (var item in speciality.Salaries)
{
int value = item.Value ?? -1;
if (value >= 0)
{
y.Add(value);
x.Add(item.Key);
}
else
{
if (item.Key < speciality.Salaries.First(pair => pair.Value > -1).Key)
{
x.Add(item.Key);
y.Add(tmp.First().Value ?? -1);
}
}
}
if (polinom + 1 >= x.Count)
polinom = (short)(x.Count - 1);
return new Approximation.Approximator(x, y, speciality.StartOfWorking);
}
private void InitSalaries(Speciality speciality, short polinom)
{
var aproximator = InitAproximator(speciality, polinom);
var isFirstNonZeroValueReached = false;
for (var i = speciality.StartOfWorking; (result[monthPriceIndex].Count > i ||
result[summarySalaryIndex][i - 1 - speciality.StartOfWorking].y <= result[summaryPriceIndex][result[summaryPriceIndex].Count - 1].y) && i < maxYears; i++)
{
var value = aproximator.CalcY(i);
if (value < 0)
value = 0;
var newPoint = new Point(i, value);
if (result[monthPriceIndex].Count > i)
{
if (!isFirstNonZeroValueReached && value > 0)
result[monthSalaryIndex].Add(new Point(i, 0));
result[monthSalaryIndex].Add(newPoint);
}
else if (result[monthPriceIndex].Count == i && result[monthPriceIndex].Last().y >= value)
{
if (!isFirstNonZeroValueReached && value > 0)
result[monthSalaryIndex].Add(new Point(i, 0));
result[monthSalaryIndex].Add(newPoint);
}
result[summarySalaryIndex].Add(new Point(i, result[summarySalaryIndex].Last().y + 12 * value));
if (value > 0)
isFirstNonZeroValueReached = true;
}
}