public void Compute(ExaminationSet set)
{
Collection.Clear();
Subject[] subjects = (Subject[])Enum.GetValues(typeof(Subject));
StudentsGroup[] groups = (StudentsGroup[])Enum.GetValues(typeof(StudentsGroup));
Dictionary <SubjectStudenGroup, Average> average = new Dictionary <SubjectStudenGroup, Average>();
Dictionary <SubjectStudenGroup, Median> median = new Dictionary <SubjectStudenGroup, Median>();
Dictionary <SubjectStudenGroup, Modus> modus = new Dictionary <SubjectStudenGroup, Modus>();
// preparation empty collections
foreach (Subject subject in subjects)
{
foreach (StudentsGroup group in groups)
{
SubjectStudenGroup ssg = new SubjectStudenGroup()
{
StudentsGroup = group, Subject = subject,
};
average.Add(ssg, new Average());
median.Add(ssg, new Median());
modus.Add(ssg, new Modus());
}
}
ComputeSubjectReport(set, groups, average, median, modus);
CollectResults(subjects, groups, average, median, modus);
}
private static void ComputeSubjectReport(ExaminationSet set, StudentsGroup[] groups, Dictionary <SubjectStudenGroup, Average> average, Dictionary <SubjectStudenGroup, Median> median, Dictionary <SubjectStudenGroup, Modus> modus)
{
foreach (StudentsGroup group in groups)
{
foreach (Examination exam in set.GetGroup(group))
{
foreach (var subjectResult in exam.Results)
{
SubjectStudenGroup ssg = new SubjectStudenGroup()
{
StudentsGroup = group, Subject = subjectResult.Key,
};
average[ssg].Add(subjectResult.Value);
median[ssg].Add(subjectResult.Value);
modus[ssg].Add(subjectResult.Value);
}
}
}
}
private void CollectResults(Subject[] subjects, StudentsGroup[] groups, Dictionary <SubjectStudenGroup, Average> average, Dictionary <SubjectStudenGroup, Median> median, Dictionary <SubjectStudenGroup, Modus> modus)
{
foreach (Subject subject in subjects)
{
foreach (StudentsGroup group in groups)
{
SubjectStudenGroup ssg = new SubjectStudenGroup()
{
StudentsGroup = group, Subject = subject,
};
SubjectReportItem reportItem = new SubjectReportItem()
{
AverageResult = average[ssg].Value(),
MedianResult = median[ssg].Value(),
ModusResult = modus[ssg].Value(),
Subject = ssg.Subject,
StudentsGroup = ssg.StudentsGroup,
};
Collection.Add(reportItem);
}
}
}