/**
* Retrieve all reservations
* */
public Dictionary <int, Reservation> getAllReservation()
{
//Get all reservations from the reservation Identity Map.
Dictionary <int, Reservation> reservations = reservationIdentityMap.findAll();
//Get all reservations in the DB
Dictionary <int, Object[]> result = tdgReservation.getAll();
// If it's empty, simply return those from the identity map
if (result == null)
{
return(reservations);
}
//Loop through each of the result:
foreach (KeyValuePair <int, Object[]> record in result)
{
//The reservation is not in the reservation identity map.
//Create an instance, add it to the reservation identity map and to the return variable
if (!reservations.ContainsKey(record.Key))
{
Reservation reservation = DirectoryOfReservations.getInstance().makeNewReservation((int)record.Key, (int)record.Value[1], (int)record.Value[2], (string)record.Value[3], (DateTime)record.Value[4]);
reservationIdentityMap.addTo(reservation);
reservations.Add(reservation.reservationID, reservation);
}
}
return(reservations);
}
/**
* Set reservation attributes
**/
public void modifyReservation(int reservationID, int roomID, string desc, DateTime date)
{
//Get the reservation that needs to be updated
Reservation reservation = getReservation(reservationID);
//Update the reservation
DirectoryOfReservations.getInstance().modifyReservation(reservationID, roomID, desc, date);
//Register instances as Dirty in the Unit Of Work since the object has been modified.
UnitOfWork.getInstance().registerDirty(reservation);
}
/**
* Initialize the list of reservation, used for instantiating console
* */
public void initializeDirectory()
{
//Get all reservations in the DB
Dictionary <int, Object[]> result = tdgReservation.getAll();
//Loop through each of the result:
foreach (KeyValuePair <int, Object[]> record in result)
{
//Create an instance, add it to the reservation identity map and to the return variable
Reservation reservation = DirectoryOfReservations.getInstance().makeNewReservation((int)record.Key, (int)record.Value[1], (int)record.Value[2], (string)record.Value[3], (DateTime)record.Value[4]);
reservationIdentityMap.addTo(reservation);
}
}
/**
* Handles the creation of a new object of type Reservation.
**/
public Reservation makeNew(int userID, int roomID, string desc, DateTime date)
{
//Get the next reservation ID
int reservationID = getNextID();
//Make a new reservation object
Reservation reservation = DirectoryOfReservations.getInstance().makeNewReservation(reservationID, userID, roomID, desc, date);
//Add new reservation to identity map
reservationIdentityMap.addTo(reservation);
//Add reservation object to UoW
UnitOfWork.getInstance().registerNew(reservation);
return(reservation); // Must return the reservation to create the time slot with the reservation ID
}
/**
* Delete reservation
* */
public void delete(int reservationID)
{
//Get the reservation to be deleted by checking the identity map
Reservation reservation = reservationIdentityMap.find(reservationID);
//If resrvation IdentityMap returned the object, remove it from identity map
if (reservation != null)
{
reservationIdentityMap.removeFrom(reservation);
}
else
{
reservation = getReservation(reservationID);
}
DirectoryOfReservations.getInstance().cancelReservation(reservationID);
//Register as deleted in the Unit Of Work.
UnitOfWork.getInstance().registerDeleted(reservation);
}
/**
* Retrieve a reservation given its reservationID.
*/
public Reservation getReservation(int reservationID)
{
//Try to obtain the reservation from the Reservation indentity map
Reservation reservation = reservationIdentityMap.find(reservationID);
Object[] result = null;
if (reservation == null)
{
//If not found in Reservation identity map then, it uses TDG to try to retrieve from DB.
result = tdgReservation.get(reservationID);
if (result != null)
{
//Reservation object was retrieved from the TDG and values obtained are passed as parameters to instantiate it
reservation = DirectoryOfReservations.getInstance().makeNewReservation((int)result[0], (int)result[1], (int)result[2], (String)result[3], Convert.ToDateTime(result[4]));
// Add it to identity map
reservationIdentityMap.addTo(reservation);
}
}
//Null is returned if it is not found in the reservation identity map NOR in the DB
return(reservation);
}
public List <Reservation> getListOfReservations()
{
return(DirectoryOfReservations.getInstance().reservationList);
}
