/// <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)
{
// Does not need to check UpperLimit since HonoursState is the highest GradePointState possible.
// Go to lower neighboring sibling: REGULARSTATE
if (student.GradePointAverage < this.LowerLimit)
{
student.GradePointStateId = RegularState.GetInstance().GradePointStateId;
}
db.SaveChanges();
}
/// <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 RegularState instance.
/// Instantiates an RegularState and populates it to the database if there is none.
/// </summary>
/// <returns>honourState : instance of the RegularState sub class</returns>
public static RegularState GetInstance()
{
if (regularState == null)
{
BITCollege_MGContext db = new BITCollege_MGContext();
regularState = db.RegularStates.SingleOrDefault();
if (regularState == null)
{
RegularState regularState = new RegularState();
db.RegularStates.Add(regularState);
db.SaveChanges();
}
}
return(regularState);
}