Examples with RoutingRequest org.opentripplanner.routing.core.RoutingRequest used on opensource projects

Example 1 with RoutingRequest

use of org.opentripplanner.routing.core.RoutingRequest in project OpenTripPlanner by opentripplanner.

the class GraphPathFinder method createReversedTransitRequest.

private RoutingRequest createReversedTransitRequest(RoutingRequest originalReq, RoutingRequest options, Vertex fromVertex, Vertex toVertex, long arrDepTime, RemainingWeightHeuristic remainingWeightHeuristic) {
    RoutingRequest request = createReversedRequest(originalReq, options, fromVertex, toVertex, arrDepTime, new EuclideanRemainingWeightHeuristic());
    if ((originalReq.parkAndRide || originalReq.kissAndRide) && !originalReq.arriveBy) {
        request.parkAndRide = false;
        request.kissAndRide = false;
        request.modes.setCar(false);
    }
    request.maxWalkDistance = CLAMP_MAX_WALK;
    return request;
}

Example 2 with RoutingRequest

use of org.opentripplanner.routing.core.RoutingRequest in project OpenTripPlanner by opentripplanner.

the class GraphPathFinder method getPaths.

/**
 * Repeatedly build shortest path trees, retaining the best path to the destination after each try.
 * For search N, all trips used in itineraries retained from trips 0..(N-1) are "banned" to create variety.
 * The goal direction heuristic is reused between tries, which means the later tries have more information to
 * work with (in the case of the more sophisticated bidirectional heuristic, which improves over time).
 */
public List<GraphPath> getPaths(RoutingRequest options) {
    RoutingRequest originalReq = options.clone();
    if (options == null) {
        LOG.error("PathService was passed a null routing request.");
        return null;
    }
    // Reuse one instance of AStar for all N requests, which are carried out sequentially
    AStar aStar = new AStar();
    if (options.rctx == null) {
        options.setRoutingContext(router.graph);
    // The special long-distance heuristic should be sufficient to constrain the search to the right area.
    }
    // If this Router has a GraphVisualizer attached to it, set it as a callback for the AStar search
    if (router.graphVisualizer != null) {
        aStar.setTraverseVisitor(router.graphVisualizer.traverseVisitor);
    // options.disableRemainingWeightHeuristic = true; // DEBUG
    }
    // Without transit, we'd just just return multiple copies of the same on-street itinerary.
    if (!options.modes.isTransit()) {
        options.numItineraries = 1;
    }
    // FORCING the dominance function to weight only
    options.dominanceFunction = new DominanceFunction.MinimumWeight();
    LOG.debug("rreq={}", options);
    // Choose an appropriate heuristic for goal direction.
    RemainingWeightHeuristic heuristic;
    RemainingWeightHeuristic reversedSearchHeuristic;
    if (options.disableRemainingWeightHeuristic) {
        heuristic = new TrivialRemainingWeightHeuristic();
        reversedSearchHeuristic = new TrivialRemainingWeightHeuristic();
    } else if (options.modes.isTransit()) {
        // Only use the BiDi heuristic for transit. It is not very useful for on-street modes.
        // heuristic = new InterleavedBidirectionalHeuristic(options.rctx.graph);
        // Use a simplistic heuristic until BiDi heuristic is improved, see #2153
        heuristic = new InterleavedBidirectionalHeuristic();
        reversedSearchHeuristic = new InterleavedBidirectionalHeuristic();
    } else {
        heuristic = new EuclideanRemainingWeightHeuristic();
        reversedSearchHeuristic = new EuclideanRemainingWeightHeuristic();
    }
    options.rctx.remainingWeightHeuristic = heuristic;
    /* In RoutingRequest, maxTransfers defaults to 2. Over long distances, we may see
         * itineraries with far more transfers. We do not expect transfer limiting to improve
         * search times on the LongDistancePathService, so we set it to the maximum we ever expect
         * to see. Because people may use either the traditional path services or the 
         * LongDistancePathService, we do not change the global default but override it here. */
    options.maxTransfers = 4;
    // Now we always use what used to be called longDistance mode. Non-longDistance mode is no longer supported.
    options.longDistance = true;
    /* In long distance mode, maxWalk has a different meaning than it used to.
         * It's the radius around the origin or destination within which you can walk on the streets.
         * If no value is provided, max walk defaults to the largest double-precision float.
         * This would cause long distance mode to do unbounded street searches and consider the whole graph walkable. */
    if (options.maxWalkDistance == Double.MAX_VALUE)
        options.maxWalkDistance = DEFAULT_MAX_WALK;
    if (options.maxWalkDistance > CLAMP_MAX_WALK)
        options.maxWalkDistance = CLAMP_MAX_WALK;
    long searchBeginTime = System.currentTimeMillis();
    LOG.debug("BEGIN SEARCH");
    List<GraphPath> paths = Lists.newArrayList();
    while (paths.size() < options.numItineraries) {
        // TODO pull all this timeout logic into a function near org.opentripplanner.util.DateUtils.absoluteTimeout()
        int timeoutIndex = paths.size();
        if (timeoutIndex >= router.timeouts.length) {
            timeoutIndex = router.timeouts.length - 1;
        }
        double timeout = searchBeginTime + (router.timeouts[timeoutIndex] * 1000);
        // Convert from absolute to relative time
        timeout -= System.currentTimeMillis();
        // Convert milliseconds to seconds
        timeout /= 1000;
        if (timeout <= 0) {
            // Catch the case where advancing to the next (lower) timeout value means the search is timed out
            // before it even begins. Passing a negative relative timeout in the SPT call would mean "no timeout".
            options.rctx.aborted = true;
            break;
        }
        // Don't dig through the SPT object, just ask the A star algorithm for the states that reached the target.
        aStar.getShortestPathTree(options, timeout);
        if (options.rctx.aborted) {
            // Search timed out or was gracefully aborted for some other reason.
            break;
        }
        List<GraphPath> newPaths = aStar.getPathsToTarget();
        if (newPaths.isEmpty()) {
            break;
        }
        // Do a full reversed search to compact the legs
        if (options.compactLegsByReversedSearch) {
            newPaths = compactLegsByReversedSearch(aStar, originalReq, options, newPaths, timeout, reversedSearchHeuristic);
        }
        // Find all trips used in this path and ban them for the remaining searches
        for (GraphPath path : newPaths) {
            // path.dump();
            List<AgencyAndId> tripIds = path.getTrips();
            for (AgencyAndId tripId : tripIds) {
                options.banTrip(tripId);
            }
            if (tripIds.isEmpty()) {
                // This path does not use transit (is entirely on-street). Do not repeatedly find the same one.
                options.onlyTransitTrips = true;
            }
        }
        paths.addAll(newPaths.stream().filter(path -> {
            double duration = options.useRequestedDateTimeInMaxHours ? options.arriveBy ? options.dateTime - path.getStartTime() : path.getEndTime() - options.dateTime : path.getDuration();
            return duration < options.maxHours * 60 * 60;
        }).collect(Collectors.toList()));
        LOG.debug("we have {} paths", paths.size());
    }
    LOG.debug("END SEARCH ({} msec)", System.currentTimeMillis() - searchBeginTime);
    Collections.sort(paths, new PathComparator(options.arriveBy));
    return paths;
}

Example 3 with RoutingRequest

use of org.opentripplanner.routing.core.RoutingRequest in project OpenTripPlanner by opentripplanner.

the class StreetTransitLink method traverse.

public State traverse(State s0) {
    // Forbid taking shortcuts composed of two street-transit links in a row. Also avoids spurious leg transitions.
    if (s0.backEdge instanceof StreetTransitLink) {
        return null;
    }
    // Do not re-enter the street network following a transfer.
    if (s0.backEdge instanceof SimpleTransfer) {
        return null;
    }
    RoutingRequest req = s0.getOptions();
    if (s0.getOptions().wheelchairAccessible && !wheelchairAccessible) {
        return null;
    }
    if (s0.getOptions().bikeParkAndRide && !s0.isBikeParked()) {
        // Forbid taking your own bike in the station if bike P+R activated.
        return null;
    }
    if (s0.isBikeRenting()) {
        // TODO Check this condition, does this always make sense?
        return null;
    }
    // Do not check here whether any transit modes are selected. A check for the presence of
    // transit modes will instead be done in the following PreBoard edge.
    // This allows searching for nearby transit stops using walk-only options.
    StateEditor s1 = s0.edit(this);
    /* Note that in arriveBy searches this is double-traversing link edges to fork the state into both WALK and CAR mode. This is an insane hack. */
    if (s0.getNonTransitMode() == TraverseMode.CAR) {
        if (req.kissAndRide && !s0.isCarParked()) {
            s1.setCarParked(true);
        } else {
            return null;
        }
    }
    s1.incrementTimeInSeconds(transitStop.getStreetToStopTime() + STL_TRAVERSE_COST);
    s1.incrementWeight(STL_TRAVERSE_COST + transitStop.getStreetToStopTime());
    s1.setBackMode(TraverseMode.LEG_SWITCH);
    return s1.makeState();
}

Example 4 with RoutingRequest

use of org.opentripplanner.routing.core.RoutingRequest in project OpenTripPlanner by opentripplanner.

the class TripPattern method getResolvedTripTimes.

public TripTimes getResolvedTripTimes(int tripIndex, State state0) {
    ServiceDay serviceDay = state0.getServiceDay();
    RoutingRequest options = state0.getOptions();
    Timetable timetable = getUpdatedTimetable(options, serviceDay);
    return timetable.getTripTimes(tripIndex);
}

Example 5 with RoutingRequest

use of org.opentripplanner.routing.core.RoutingRequest in project OpenTripPlanner by opentripplanner.

the class PreBoardEdge method traverse.

@Override
public State traverse(State s0) {
    RoutingRequest options = s0.getOptions();
    // Ignore this edge if its stop is banned
    if (!options.bannedStops.isEmpty()) {
        if (options.bannedStops.matches(((TransitStop) fromv).getStop())) {
            return null;
        }
    }
    if (!options.bannedStopsHard.isEmpty()) {
        if (options.bannedStopsHard.matches(((TransitStop) fromv).getStop())) {
            return null;
        }
    }
    if (options.arriveBy) {
        /* Traverse backward: not much to do */
        StateEditor s1 = s0.edit(this);
        TransitStop fromVertex = (TransitStop) getFromVertex();
        // apply board slack
        s1.incrementTimeInSeconds(options.boardSlack);
        s1.alightTransit();
        s1.setBackMode(getMode());
        return s1.makeState();
    } else {
        // options can be used to find transit stops without boarding vehicles.
        if (!options.modes.isTransit())
            return null;
        // If we've hit our transfer limit, don't go any further
        if (s0.getNumBoardings() > options.maxTransfers)
            return null;
        /* apply transfer rules */
        /*
             * look in the global transfer table for the rules from the previous stop to this stop.
             */
        long t0 = s0.getTimeSeconds();
        long slack;
        if (s0.isEverBoarded()) {
            slack = options.transferSlack - options.alightSlack;
        } else {
            slack = options.boardSlack;
        }
        long board_after = t0 + slack;
        long transfer_penalty = 0;
        // penalize transfers more heavily if requested by the user
        if (s0.isEverBoarded()) {
            // this is not the first boarding, therefore we must have "transferred" -- whether
            // via a formal transfer or by walking.
            transfer_penalty += options.transferPenalty;
        }
        StateEditor s1 = s0.edit(this);
        s1.setTimeSeconds(board_after);
        long wait_cost = board_after - t0;
        s1.incrementWeight(wait_cost + transfer_penalty);
        s1.setBackMode(getMode());
        return s1.makeState();
    }
}