Esempio n. 1
0
        /// <summary>
        /// Allows queues to be formed at the specified lane, the attendant to be assigned must have no designated lane
        /// </summary>
        /// <param name="queueLaneNumber"></param>
        /// <param name="attendant"></param>
        /// <param name="tolerance">Maximum amount of time to consider priority numbers</param>
        /// <returns></returns>
        public bool SetLaneActive(int queueLaneNumber,
                                  QueueAttendant attendant,
                                  TimeSpan tolerance)
        {
            //check if the lane queue is existing
            if (laneQueues.TryGetValue(queueLaneNumber, out LaneQueue laneQueue))
            {
                //allow only attendants that do not have a designated lane
                if (attendant.DesignatedLane.LaneNumber != 0 ||
                    attendant.DesignatedLane.LaneName != null)
                {
                    return(false);
                }

                //get the associated lane to the lane number
                var lane = dataAccessLogic.GetLaneWithLaneNumber(
                    queueLaneNumber
                    );

                laneQueue = new LaneQueue();
                laneQueue.SetQueueLane(lane);
                laneQueue.SetAttendant(attendant);
                laneQueue.Tolerance = tolerance;

                bool isSuccess = dataAccessLogic.AddLaneQueue(
                    laneQueue
                    );

                laneQueue = dataAccessLogic.GetLaneQueueWithLaneID(
                    lane.LaneID
                    );

                if (isSuccess &&
                    laneQueue == null)
                {
                    //unexpected error
                    throw new Exception("Failed to get lane queue of lane number: " +
                                        queueLaneNumber);
                }

                if (isSuccess)
                {
                    //reflect changes in application
                    laneQueues[queueLaneNumber] = laneQueue;
                }

                //conditions for failure:
                //  lane queue already exists for this lane number
                //  the attendant object given does not have an id set
                return(isSuccess);
            }
            else
            {
                //lane number unused
                return(false);
            }
        }