Module eus.ehu.hotelreservation

Package eus.ehu.hotelreservation.businessLogic

Class BlFacadeImplementation

java.lang.Object

eus.ehu.hotelreservation.businessLogic.BlFacadeImplementation

All Implemented Interfaces:

BlFacade

public class BlFacadeImplementation
extends Object
implements BlFacade

Singleton implementation of the business-logic facade.

Provides the application layer with high-level operations such as searching available rooms, making reservations and joining the waiting list. Internally delegates to DataAccess for persistence and keeps track of the currently logged-in customer.

See Also:

• BlFacade

Method Summary

Modifier and Type	Method	Description
List<AvailableRoomModel>	getAvailableRooms(String hotelName, LocalDate startDate, LocalDate endDate)	Queries available room types for a given hotel and date range.
List<Hotel>	getHotels()	Returns the list of all hotels registered in the system.
static BlFacadeImplementation	getInstance()	Returns the singleton instance of the business-logic facade.
void	joinWaitingList(String hotelName, String roomType, LocalDate startDate, LocalDate endDate)	Registers the current customer on the waiting list for the given room type at the specified hotel and date range.
void	reserveRoom(AvailableRoomModel room, LocalDate startDate, LocalDate endDate)	Creates a reservation for the selected room type and charges 20% of the total price upfront as an advance payment.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getInstance

public static BlFacadeImplementation getInstance()

Returns the singleton instance of the business-logic facade.

Returns:

the unique BlFacadeImplementation instance

getHotels

public List<Hotel> getHotels()

Description copied from interface: BlFacade

Returns the list of all hotels registered in the system.

Specified by:

getHotels in interface BlFacade

Returns:

a list of Hotel entities, never null

getAvailableRooms

public List<AvailableRoomModel> getAvailableRooms(String hotelName,
 LocalDate startDate,
 LocalDate endDate)

Description copied from interface: BlFacade

Queries available room types for a given hotel and date range.

Only room types that have at least one available room for the entire stay (all days between startDate and endDate) are returned. The total price is calculated day-by-day, respecting different rates on different dates (e.g. peak-season pricing).

Specified by:

getAvailableRooms in interface BlFacade

Parameters:

hotelName - the name of the hotel

startDate - check-in date (inclusive)

endDate - check-out date (exclusive)

Returns:

list of available room types with daily and total prices

reserveRoom

public void reserveRoom(AvailableRoomModel room,
 LocalDate startDate,
 LocalDate endDate)

Description copied from interface: BlFacade

Creates a reservation for the selected room type and charges 20% of the total price upfront as an advance payment.

A concrete Room is assigned from the pool of available rooms of that type at the hotel.

Specified by:

reserveRoom in interface BlFacade

Parameters:

room - the room type model selected by the user

startDate - check-in date

endDate - check-out date

joinWaitingList

public void joinWaitingList(String hotelName,
 String roomType,
 LocalDate startDate,
 LocalDate endDate)

Description copied from interface: BlFacade

Registers the current customer on the waiting list for the given room type at the specified hotel and date range.

This is typically used when no rooms of the desired type are available.

Specified by:

joinWaitingList in interface BlFacade

Parameters:

hotelName - the hotel name

roomType - the desired room type (e.g. "simple", "doble", "suite")

startDate - desired check-in date

endDate - desired check-out date