//-------------------------------------------------------------------------
/**
*  This class represents a rudimentary timetable that contains a set
*  of appointments.  Appointments are organized by hour of the day and
*  day of the week.
*
*  @author  Stephen Edwards
*  @version Feb 22, 2005
*/
public class TimeTable
{
    //~ Instance/static variables .............................................

    private Appointment[][] appointments;


    //~ Constructor ...........................................................

    // ----------------------------------------------------------
    /**
     * Creates a new TimeTable object.
     */
    public TimeTable()
    {
        appointments = new Appointment[7][24];
    }


    //~ Methods ...............................................................

    // ----------------------------------------------------------
    /**
     * Add another appointment.  If there is already an existing appointment
     * scheduled for the given day/time, it will be replaced.
     * @param day         the day of the week on which this appointment
     *                    falls (0-6)
     * @param appointment the appointment to add
     */
    public void addAppointment( int day, Appointment appointment )
    {
        appointments[day][appointment.hour()] = appointment;
    }


    // ----------------------------------------------------------
    /**
     * Look up the appointment scheduled for a given day and hour.
     * @param day  the day of the week to look up (0-6)
     * @param hour the hour of the day to look up (0-23)
     * @return the appointment scheduled for the given time, or null
     *         if there is none
     */
    public Appointment appointmentFor( int day, int hour )
    {
        return appointments[day][hour];
    }
}