/// <summary> /// Changes Student GradePointState from one state to another depending on the GradePointAverage. /// </summary> /// <param name="student">Student object</param> public override void StateChangeCheck(Student student) { // Go to higher neighboring sibling: REGULARSTATE if (student.GradePointAverage > this.UpperLimit) { student.GradePointStateId = RegularState.GetInstance().GradePointStateId; } // Go to lower neighboring sibling: SUSPENDEDSTATE if (student.GradePointAverage < this.LowerLimit) { student.GradePointStateId = SuspendedState.GetInstance().GradePointStateId; } db.SaveChanges(); }
/// <summary> /// Checks for an existing SuspendedState instance. /// Instantiates an SuspendedState and populates it to the database if there is none. /// </summary> /// <returns>honourState : instance of the SuspendedState sub class</returns> public static SuspendedState GetInstance() { if (suspendedState == null) { BITCollege_MGContext db = new BITCollege_MGContext(); suspendedState = db.SuspendedStates.SingleOrDefault(); if (suspendedState == null) { SuspendedState suspendedState = new SuspendedState(); db.SuspendedStates.Add(suspendedState); db.SaveChanges(); } } return(suspendedState); }