/// <summary>
/// Constructor for the class Lecturer without giving a lecturerID.
/// ID will be generated autmatically.
/// Should be used when creating a truly new object that is not yet stored.
/// </summary>
/// <param name="titleAndName">cannot be null</param>
/// <param name="university">cannot be null</param>
/// <param name="major">cannot be null</param>
public Lecturer(string titleAndName, University university, Major major)
{
DataSearch ds = new DataSearch();
Init(Guid.NewGuid(), titleAndName, university, major);
}
/// <summary>
/// Construtor for the class Course without giving a courseID.
/// Averages and amounts of rating categories will be set to 0.
/// ID will be generated automatically.
/// Should be used when creating a truly new object that is not yet stored.
/// </summary>
/// <param name="courseName">cannot be null</param>
/// <param name="university">cannot be null</param>
/// <param name="lecturer">cannot be null</param>
/// <param name="since">cannot be null</param>
/// <param name="major">cannot be null</param>
public Course(string name, University university, Lecturer lecturer, Semester since, Major major)
{
Init(Guid.NewGuid(), name, university, lecturer, since, major);
}
/// <summary>
/// Constructor for class Student with manually assigning a studentID.
/// Should be used when recreating an object from the datafile
/// </summary>
/// <param name="studentID">cannot be null</param>
/// <param name="studentName">cannot be null</param>
/// <param name="university">cannot be null</param>
/// <param name="userName">cannot be null</param>
/// <param name="password">cannot be null</param>
/// <param name="areaOfStudies">can be null</param>
public Student(string userName, string password, University university,
string areaOfStudies)
{
Init(Guid.NewGuid(), userName, password, university, areaOfStudies);
}
/// <summary>
/// Constructor for the class Major without giving a majorID.
/// ID will be generated automatically.
/// Should be used when creating a truly new object that is not yet stored.
/// </summary>
/// <param name="name"></param>
/// <param name="university"></param>
public Major(string name, University university)
{
DataSearch ds = new DataSearch();
Init(Guid.NewGuid(), name, university);
}