/**
* Prune raptor data to include only routes and boardings which have trips today. Doesn't actually
* improve speed
*/
@SuppressWarnings("unchecked")
private RaptorData pruneDataForServiceDays(Graph graph, ArrayList<ServiceDay> serviceDays) {
if (serviceDays.equals(cachedServiceDays)) return cachedRaptorData;
RaptorData data = graph.getService(RaptorDataService.class).getData();
RaptorData pruned = new RaptorData();
pruned.raptorStopsForStopId = data.raptorStopsForStopId;
pruned.stops = data.stops;
pruned.routes = new ArrayList<RaptorRoute>();
pruned.routesForStop = new List[pruned.stops.length];
for (RaptorRoute route : data.routes) {
ArrayList<Integer> keep = new ArrayList<Integer>();
for (int i = 0; i < route.boards[0].length; ++i) {
Edge board = route.boards[0][i];
int serviceId;
if (board instanceof TransitBoardAlight) {
serviceId = ((TransitBoardAlight) board).getPattern().getServiceId();
} else {
log.debug("Unexpected nonboard among boards");
continue;
}
for (ServiceDay day : serviceDays) {
if (day.serviceIdRunning(serviceId)) {
keep.add(i);
break;
}
}
}
if (keep.isEmpty()) continue;
int nPatterns = keep.size();
RaptorRoute prunedRoute = new RaptorRoute(route.getNStops(), nPatterns);
for (int stop = 0; stop < route.getNStops() - 1; ++stop) {
for (int pattern = 0; pattern < nPatterns; ++pattern) {
prunedRoute.boards[stop][pattern] = route.boards[stop][keep.get(pattern)];
}
}
pruned.routes.add(route);
for (RaptorStop stop : route.stops) {
List<RaptorRoute> routes = pruned.routesForStop[stop.index];
if (routes == null) {
routes = new ArrayList<RaptorRoute>();
pruned.routesForStop[stop.index] = routes;
}
routes.add(route);
}
}
for (RaptorStop stop : data.stops) {
if (pruned.routesForStop[stop.index] == null) {
pruned.routesForStop[stop.index] = Collections.emptyList();
}
}
cachedServiceDays = serviceDays;
cachedRaptorData = pruned;
return pruned;
}
private boolean checkForInterliningArriveBy(
RoutingRequest options, int nBoardings, RaptorRoute route, List<RaptorState> boardStates) {
int firstStop = route.getNStops() - 1;
boolean started = false;
final List<RaptorState> states = statesByStop[route.stops[firstStop].index];
if (states == null) return false;
INTERLINE:
for (RaptorState oldState : states) {
if (oldState.nBoardings != nBoardings - 1) {
continue;
}
if (oldState.route == null) {
continue;
}
if (oldState.route.stops[0] != oldState.stop) {
continue;
}
RaptorInterlineData interline = oldState.route.interlinesIn.get(oldState.tripId);
if (interline == null || interline.fromRoute != route) {
continue;
}
RaptorState stayOn = oldState.clone();
stayOn.arrivalTime += options.getBoardSlack(); // go backwards in time
stayOn.interlining = true;
// generate a board state for this interline
RaptorState boardState = new RaptorState(stayOn);
// we need to subtract out the boardSlack that we are about to mistakenly pay
boardState.weight = -options.getBoardSlack() - options.getAlightSlack();
boardState.nBoardings = boardState.nBoardings = nBoardings - 1;
boardState.boardStop = route.stops[firstStop];
boardState.boardStopSequence = firstStop;
TransitBoardAlight alight = route.alights[firstStop - 1][interline.fromPatternIndex];
TableTripPattern pattern = alight.getPattern();
boardState.tripTimes = pattern.getTripTimes(interline.fromTripIndex);
final ServiceDay serviceDay = oldState.serviceDay;
boardState.arrivalTime =
(int) serviceDay.time(boardState.tripTimes.getArrivalTime(firstStop - 1));
boardState.patternIndex = interline.fromPatternIndex;
boardState.tripId = interline.fromTripId;
boardState.serviceDay = serviceDay;
boardState.route = route;
boardState.walkDistance = oldState.walkDistance;
for (RaptorState state : boardStates) {
if (state.eDominates(boardState)) {
continue INTERLINE;
}
}
boardStates.add(boardState);
started = true;
}
return started;
}
public List<RaptorState> transitPhase(RoutingRequest options, int nBoardings) {
Collection<RaptorRoute> routesToVisit = new HashSet<RaptorRoute>();
if (data.routesForStop == null) {
Collection<RaptorRoute> routes = data.routes;
for (RaptorStop stop : visitedLastRound) {
for (RaptorRoute route : data.routesForStop[stop.index]) {
if (routes.contains(route)) {
routesToVisit.add(route);
}
}
}
} else {
for (RaptorStop stop : visitedLastRound) {
for (RaptorRoute route : data.routesForStop[stop.index]) {
routesToVisit.add(route);
}
}
}
HashSet<RaptorStop> visitedThisRound = new HashSet<RaptorStop>();
List<RaptorState> createdStates = new ArrayList<RaptorState>();
int boardSlack;
if (options.isArriveBy()) {
boardSlack =
nBoardings == 1
? options.getAlightSlack()
: (options.getTransferSlack() - options.getBoardSlack());
} else {
boardSlack =
nBoardings == 1
? options.getBoardSlack()
: (options.getTransferSlack() - options.getAlightSlack());
}
for (RaptorRoute route : routesToVisit) {
List<RaptorState> boardStates = new ArrayList<RaptorState>(); // not really states
boolean started;
int firstStop, lastStop, direction, lastBoardStop;
if (options.isArriveBy()) {
firstStop = route.getNStops() - 1;
lastStop = -1;
direction = -1;
lastBoardStop = 0;
// check for interlining on the first stop
started = checkForInterliningArriveBy(options, nBoardings, route, boardStates);
} else {
firstStop = 0;
lastStop = route.getNStops();
direction = 1;
lastBoardStop = lastStop - 1;
started = checkForInterliningDepartAt(options, nBoardings, route, boardStates);
}
for (int stopNo = firstStop; stopNo != lastStop; stopNo += direction) {
// find the current time at this stop
RaptorStop stop = route.stops[stopNo];
if (!started && !visitedLastRound.contains(stop)) continue;
started = true;
// skip stops which aren't in this set of data;
// this is used for the rush ahead search
if (!data.raptorStopsForStopId.containsKey(stop.stopVertex.getStopId())) {
continue;
}
// Skip banned stops
if (options.getBannedStops().matches(stop.stopVertex.getStop())) {
continue;
}
if (options.getBannedStopsHard().matches(stop.stopVertex.getStop())) {
continue;
}
List<RaptorState> states = statesByStop[stop.index];
List<RaptorState> newStates = new ArrayList<RaptorState>();
if (states == null) {
states = new ArrayList<RaptorState>();
statesByStop[stop.index] = states;
}
// this checks the case of continuing on the current trips.
CONTINUE:
for (RaptorState boardState : boardStates) {
if (boardState.boardStop == stop) {
// this only happens due to interlines where
// the last stop of the first route is equal to the first stop of the
// subsequent route.
continue;
}
RaptorState newState = new RaptorState(boardState.getParent());
ServiceDay sd = boardState.serviceDay;
int travelTime;
if (options.isArriveBy()) {
if (!route.alights[0][boardState.patternIndex].getPattern().canBoard(stopNo)) continue;
int boardTime = route.getBoardTime(boardState.tripTimes, stopNo);
newState.arrivalTime = (int) sd.time(boardTime);
// add in slack
newState.arrivalTime -= options.getBoardSlack();
travelTime = newState.getParent().arrivalTime - newState.arrivalTime;
} else {
if (!route.boards[0][boardState.patternIndex].getPattern().canAlight(stopNo)) continue;
int alightTime = route.getAlightTime(boardState.tripTimes, stopNo);
newState.arrivalTime = (int) sd.time(alightTime);
// add in slack
newState.arrivalTime += options.getAlightSlack();
travelTime = newState.arrivalTime - newState.getParent().arrivalTime;
}
newState.weight += travelTime;
// TODO: consider transfer penalties
newState.weight += boardState.weight;
newState.boardStop = boardState.boardStop;
newState.boardStopSequence = boardState.boardStopSequence;
newState.route = route;
newState.patternIndex = boardState.patternIndex;
newState.tripTimes = boardState.tripTimes;
newState.nBoardings = boardState.nBoardings;
newState.walkDistance = boardState.walkDistance;
newState.tripId = boardState.tripId;
newState.stop = stop;
newState.serviceDay = boardState.serviceDay;
for (RaptorState oldState : states) {
if (oldState.eDominates(newState)) {
continue CONTINUE;
}
}
for (RaptorState oldState : newStates) {
if (oldState.eDominates(newState)) {
continue CONTINUE;
}
}
Iterator<RaptorState> it = states.iterator();
while (it.hasNext()) {
RaptorState oldState = it.next();
if (newState.eDominates(oldState)) {
it.remove();
}
}
it = newStates.iterator();
while (it.hasNext()) {
RaptorState oldState = it.next();
if (newState.eDominates(oldState)) {
it.remove();
}
}
visitedThisRound.add(stop);
visitedEver.add(stop);
newStates.add(newState);
}
if (stopNo != lastBoardStop) {
if (stop.stopVertex.isLocal() && nBoardings > 1) {
// cannot transfer at a local stop
createdStates.addAll(newStates);
states.addAll(newStates);
continue;
}
// try boarding here
TRYBOARD:
for (RaptorState oldState : states) {
if (oldState.nBoardings != nBoardings - 1) continue;
if (oldState.getRoute() == route)
continue; // we got here via this route, so no reason to transfer
RaptorBoardSpec boardSpec;
int waitTime;
if (options.isArriveBy()) {
int arrivalTime = oldState.arrivalTime - boardSlack;
boardSpec = route.getTripIndexReverse(options, arrivalTime, stopNo);
if (boardSpec == null) continue;
waitTime = oldState.arrivalTime - boardSpec.departureTime;
} else {
int arrivalTime = oldState.arrivalTime + boardSlack;
boardSpec = route.getTripIndex(options, arrivalTime, stopNo);
if (boardSpec == null) continue;
waitTime = boardSpec.departureTime - oldState.arrivalTime;
}
RaptorState boardState = new RaptorState(oldState);
if (nBoardings == 1) {
// do not count initial wait time, since it will be optimized away later
boardState.initialWaitTime = waitTime;
waitTime = 0;
}
boardState.weight = options.getBoardCost(route.mode) + waitTime;
boardState.nBoardings = nBoardings;
boardState.boardStop = stop;
boardState.boardStopSequence = stopNo;
boardState.arrivalTime = boardSpec.departureTime;
boardState.patternIndex = boardSpec.patternIndex;
boardState.tripTimes = boardSpec.tripTimes;
boardState.serviceDay = boardSpec.serviceDay;
boardState.route = route;
boardState.walkDistance = oldState.walkDistance;
boardState.tripId = boardSpec.tripId;
for (RaptorState state : boardStates) {
if (state.eDominates(boardState)) {
continue TRYBOARD;
}
}
for (RaptorState state : newStates) {
if (state.eDominates(boardState)) {
continue TRYBOARD;
}
}
boardStates.add(boardState);
}
}
createdStates.addAll(newStates);
states.addAll(newStates);
}
}
visitedLastRound = visitedThisRound;
return createdStates;
}
