Package bcu.cmp5332.bookingsystem.commands

Class ListCustomer

java.lang.Object

bcu.cmp5332.bookingsystem.commands.ListCustomer

All Implemented Interfaces:

Command

public class ListCustomer
extends Object
implements Command

The ListCustomer class represents a command to list all customers in the flight booking system. It implements the Command interface, allowing it to be executed within the context of a FlightBookingSystem instance.

Upon execution, the command retrieves a list of all customers from the FlightBookingSystem instance. It then iterates through the list and prints the short details (using getDetailsShort()) of each customer to the console, excluding any customers marked as deleted.

After listing all customers, it prints the total number of customers retrieved.

Example usage:

 // Create a new ListCustomer command instance
 Command listCustomerCommand = new ListCustomer();
 
 // Execute the command within a FlightBookingSystem instance
 listCustomerCommand.execute(flightBookingSystem);
 

See Also:

• Command

Field Summary

Fields inherited from interface bcu.cmp5332.bookingsystem.commands.Command

HELP_MESSAGE

Constructor Summary

Constructors

Constructor	Description
ListCustomer()

Method Summary

Modifier and Type	Method	Description
void	execute(FlightBookingSystem flightBookingSystem)	Executes the list customer command within the provided FlightBookingSystem instance.

Methods inherited from class java.lang.Object

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

Constructor Details

ListCustomer

public ListCustomer()

Method Details

execute

public void execute(FlightBookingSystem flightBookingSystem)
             throws FlightBookingSystemException

Executes the list customer command within the provided FlightBookingSystem instance. Retrieves a list of all customers and prints their short details to the console. Excludes customers marked as deleted.

Specified by:

execute in interface Command

Parameters:

flightBookingSystem - The FlightBookingSystem instance on which the command is executed

Throws:

FlightBookingSystemException - If there is an error while accessing or processing flight booking system data