public void AddSpeciality(Speciality speciality)
        {
            if (speciality == null)
                throw new ArgumentNullException("speciality");

            using (SpecialityRepository repository = new SpecialityRepository())
            {
                var existedSpecialities = repository.GetFiltered(s => s.Name == speciality.Name && s.UniversityId == speciality.UniversityId);
                if (existedSpecialities != null)
                {
                    // TODO: throw existing speciality of that university
                }
                repository.Add(speciality);
                repository.Commit();
            }
        }
        public void UpdateSpeciality(Speciality speciality)
        {
            if (speciality == null)
                throw new ArgumentNullException("speciality");

            using (SpecialityRepository repository = new SpecialityRepository())
            {
                repository.Modify(speciality);
                repository.Commit();
            }
        }
 /// <summary>
 /// Deprecated Method for adding a new object to the Specialities EntitySet. Consider using the .Add method of the associated ObjectSet&lt;T&gt; property instead.
 /// </summary>
 public void AddToSpecialities(Speciality speciality)
 {
     base.AddObject("Specialities", speciality);
 }
 /// <summary>
 /// Create a new Speciality object.
 /// </summary>
 /// <param name="id">Initial value of the Id property.</param>
 /// <param name="name">Initial value of the Name property.</param>
 /// <param name="category">Initial value of the Category property.</param>
 public static Speciality CreateSpeciality(global::System.Guid id, global::System.String name, global::System.String category)
 {
     Speciality speciality = new Speciality();
     speciality.Id = id;
     speciality.Name = name;
     speciality.Category = category;
     return speciality;
 }