| <?php | <?php |
| /* | |
| * Copyright 2010,2011 Alexander Sadleir | |
| Licensed under the Apache License, Version 2.0 (the "License"); | |
| you may not use this file except in compliance with the License. | |
| You may obtain a copy of the License at | |
| http://www.apache.org/licenses/LICENSE-2.0 | |
| Unless required by applicable law or agreed to in writing, software | |
| distributed under the License is distributed on an "AS IS" BASIS, | |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| See the License for the specific language governing permissions and | |
| limitations under the License. | |
| */ | |
| function getTrip($tripID) { | function getTrip($tripID) { |
| global $conn; | global $conn; |
| $query = "Select * from trips where trip_id = '$tripID' join routes on trips.route_id = routes.route_id LIMIT 1"; | $query = "Select * from trips |
| debug($query,"database"); | join routes on trips.route_id = routes.route_id |
| $result = pg_query($conn, $query); | where trip_id = :tripID |
| if (!$result) { | LIMIT 1"; |
| databaseError(pg_result_error($result)); | debug($query, "database"); |
| return Array(); | $query = $conn->prepare($query); |
| } | $query->bindParam(":tripID", $tripID); |
| return pg_fetch_assoc($result); | $query->execute(); |
| } | if (!$query) { |
| function getTripShape() { | databaseError($conn->errorInfo()); |
| /* def handle_json_GET_tripstoptimes(self, params): | return Array(); |
| schedule = self.server.schedule | } |
| try: | return $query->fetch(PDO :: FETCH_ASSOC); |
| trip = schedule.GetTrip(params.get('trip')) | } |
| except KeyError: | |
| # if a non-existent trip is searched for, the return nothing | function getTripShape($tripID) { |
| return | global $conn; |
| time_stops = trip.GetTimeInterpolatedStops() | $query = "SELECT ST_AsKML(ST_MakeLine(geometry(a.position))) as the_route |
| stops = [] | FROM (SELECT position, |
| times = [] | stop_sequence, trips.trip_id |
| for arr,ts,is_timingpoint in time_stops: | FROM stop_times |
| stops.append(StopToTuple(ts.stop)) | join trips on trips.trip_id = stop_times.trip_id |
| times.append(arr) | join stops on stops.stop_id = stop_times.stop_id |
| return [stops, times] | WHERE trips.trip_id = :tripID ORDER BY stop_sequence) as a group by a.trip_id"; |
| debug($query, "database"); | |
| def handle_json_GET_tripshape(self, params): | $query = $conn->prepare($query); |
| schedule = self.server.schedule | $query->bindParam(":tripID", $tripID); |
| try: | $query->execute(); |
| trip = schedule.GetTrip(params.get('trip')) | if (!$query) { |
| except KeyError: | databaseError($conn->errorInfo()); |
| # if a non-existent trip is searched for, the return nothing | return Array(); |
| return | } |
| points = [] | return $query->fetchColumn(0); |
| if trip.shape_id: | } |
| shape = schedule.GetShape(trip.shape_id) | |
| for (lat, lon, dist) in shape.points: | function getTimeInterpolatedTrip($tripID, $range = "") { |
| points.append((lat, lon)) | global $conn; |
| else: | $query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code, |
| time_stops = trip.GetTimeStops() | stop_sequence,service_id,trips.route_id,route_short_name,route_long_name |
| for arr,dep,stop in time_stops: | FROM stop_times |
| points.append((stop.stop_lat, stop.stop_lon)) | join trips on trips.trip_id = stop_times.trip_id |
| return points*/ | join routes on trips.route_id = routes.route_id |
| } | join stops on stops.stop_id = stop_times.stop_id |
| function getTimeInterpolatedTrip($tripID) { | WHERE trips.trip_id = :tripID $range ORDER BY stop_sequence"; |
| /* rv = [] | debug($query, "database"); |
| $query = $conn->prepare($query); | |
| stoptimes = self.GetStopTimes() | $query->bindParam(":tripID", $tripID); |
| # If there are no stoptimes [] is the correct return value but if the start | $query->execute(); |
| # or end are missing times there is no correct return value. | if (!$query) { |
| if not stoptimes: | databaseError($conn->errorInfo()); |
| return [] | return Array(); |
| if (stoptimes[0].GetTimeSecs() is None or | } |
| stoptimes[-1].GetTimeSecs() is None): | $stopTimes = $query->fetchAll(); |
| raise ValueError("%s must have time at first and last stop" % (self)) | $cur_timepoint = Array(); |
| $next_timepoint = Array(); | |
| cur_timepoint = None | $distance_between_timepoints = 0.0; |
| next_timepoint = None | $distance_traveled_between_timepoints = 0.0; |
| distance_between_timepoints = 0 | $rv = Array(); |
| distance_traveled_between_timepoints = 0 | foreach ($stopTimes as $i => $stopTime) { |
| if ($stopTime['arrival_time'] != "") { | |
| for i, st in enumerate(stoptimes): | // is timepoint |
| if st.GetTimeSecs() != None: | $cur_timepoint = $stopTime; |
| cur_timepoint = st | $distance_between_timepoints = 0.0; |
| distance_between_timepoints = 0 | $distance_traveled_between_timepoints = 0.0; |
| distance_traveled_between_timepoints = 0 | if ($i + 1 < sizeof($stopTimes)) { |
| if i + 1 < len(stoptimes): | $k = $i + 1; |
| k = i + 1 | $distance_between_timepoints += distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); |
| distance_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[k-1].stop, stoptimes[k].stop) | while ($stopTimes[$k]["arrival_time"] == "" && $k + 1 < sizeof($stopTimes)) { |
| while stoptimes[k].GetTimeSecs() == None: | $k += 1; |
| k += 1 | // echo "k".$k; |
| distance_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[k-1].stop, stoptimes[k].stop) | $distance_between_timepoints += distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); |
| next_timepoint = stoptimes[k] | } |
| rv.append( (st.GetTimeSecs(), st, True) ) | $next_timepoint = $stopTimes[$k]; |
| else: | } |
| distance_traveled_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[i-1].stop, st.stop) | $rv[] = $stopTime; |
| distance_percent = distance_traveled_between_timepoints / distance_between_timepoints | } else { |
| total_time = next_timepoint.GetTimeSecs() - cur_timepoint.GetTimeSecs() | // is untimed point |
| time_estimate = distance_percent * total_time + cur_timepoint.GetTimeSecs() | // echo "i".$i; |
| rv.append( (int(round(time_estimate)), st, False) ) | $distance_traveled_between_timepoints += distance($stopTimes[$i - 1]["stop_lat"], $stopTimes[$i - 1]["stop_lon"], $stopTimes[$i]["stop_lat"], $stopTimes[$i]["stop_lon"]); |
| // echo "$distance_traveled_between_timepoints / $distance_between_timepoints<br>"; | |
| return rv*/ | $distance_percent = $distance_traveled_between_timepoints / $distance_between_timepoints; |
| } | if ($next_timepoint["arrival_time"] != "") { |
| function getTimeInterpolatedTripAtStop($trip_id, $stop_sequence) { | $total_time = strtotime($next_timepoint["arrival_time"]) - strtotime($cur_timepoint["arrival_time"]); |
| foreach(getTimeInterpolatedTrip($tripID) as $tripStop) { | // echo strtotime($next_timepoint["arrival_time"])." - ".strtotime($cur_timepoint["arrival_time"])."<br>"; |
| if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop; | $time_estimate = ($distance_percent * $total_time) + strtotime($cur_timepoint["arrival_time"]); |
| } | $stopTime["arrival_time"] = date("H:i:s", $time_estimate); |
| return Array(); | } else { |
| $stopTime["arrival_time"] = $cur_timepoint["arrival_time"]; | |
| } | |
| $rv[] = $stopTime; | |
| } | |
| } | |
| // var_dump($rv); | |
| return $rv; | |
| } | |
| function getTripPreviousTimePoint($tripID, $stop_sequence) { | |
| global $conn; | |
| $query = " SELECT trip_id,stop_id, | |
| stop_sequence | |
| FROM stop_times | |
| WHERE trip_id = :tripID and stop_sequence < :stop_sequence | |
| and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence DESC LIMIT 1"; | |
| debug($query, "database"); | |
| $query = $conn->prepare($query); | |
| $query->bindParam(":tripID", $tripID); | |
| $query->bindParam(":stop_sequence", $stop_sequence); | |
| $query->execute(); | |
| if (!$query) { | |
| databaseError($conn->errorInfo()); | |
| return Array(); | |
| } | |
| return $query->fetch(PDO :: FETCH_ASSOC); | |
| } | |
| function getTripNextTimePoint($tripID, $stop_sequence) { | |
| global $conn; | |
| $query = " SELECT trip_id,stop_id, | |
| stop_sequence | |
| FROM stop_times | |
| WHERE trip_id = :tripID and stop_sequence > :stop_sequence | |
| and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence LIMIT 1"; | |
| debug($query, "database"); | |
| $query = $conn->prepare($query); | |
| $query->bindParam(":tripID", $tripID); | |
| $query->bindParam(":stop_sequence", $stop_sequence); | |
| $query->execute(); | |
| if (!$query) { | |
| databaseError($conn->errorInfo()); | |
| return Array(); | |
| } | |
| return $query->fetch(PDO :: FETCH_ASSOC); | |
| } | |
| function getTimeInterpolatedTripAtStop($tripID, $stop_sequence) { | |
| global $conn; | |
| // limit interpolation to between nearest actual points. | |
| $prevTimePoint = getTripPreviousTimePoint($tripID, $stop_sequence); | |
| $nextTimePoint = getTripNextTimePoint($tripID, $stop_sequence); | |
| // echo " prev {$lowestDelta['stop_sequence']} next {$nextTimePoint['stop_sequence']} "; | |
| $range = ""; | |
| if ($prevTimePoint != "") | |
| $range .= " AND stop_sequence >= '{$prevTimePoint['stop_sequence']}'"; | |
| if ($nextTimePoint != "") | |
| $range .= " AND stop_sequence <= '{$nextTimePoint['stop_sequence']}'"; | |
| foreach (getTimeInterpolatedTrip($tripID, $range) as $tripStop) { | |
| if ($tripStop['stop_sequence'] == $stop_sequence) | |
| return $tripStop; | |
| } | |
| return Array(); | |
| } | } |
| function getTripStartTime($tripID) { | function getTripStartTime($tripID) { |
| $query = 'SELECT arrival_secs,departure_secs FROM stop_times WHERE trip_id=? ORDER BY stop_sequence LIMIT 1'; | global $conn; |
| $query = "Select * from stop_times | |
| } | where trip_id = :tripID |
| AND arrival_time IS NOT NULL | |
| function viaPointNames($tripid, $stopid) | AND stop_sequence = '1'"; |
| { | debug($query, "database"); |
| global $conn; | $query = $conn->prepare($query); |
| $query = "SELECT stop_name | $query->bindParam(":tripID", $tripID); |
| $query->execute(); | |
| if (!$query) { | |
| databaseError($conn->errorInfo()); | |
| return Array(); | |
| } | |
| $r = $query->fetch(PDO :: FETCH_ASSOC); | |
| return $r['arrival_time']; | |
| } | |
| function getTripEndTime($tripID) { | |
| global $conn; | |
| $query = "SELECT trip_id,max(arrival_time) as arrival_time from stop_times | |
| WHERE stop_times.arrival_time IS NOT NULL and trip_id = :tripID group by trip_id"; | |
| debug($query, "database"); | |
| $query = $conn->prepare($query); | |
| $query->bindParam(":tripID", $tripID); | |
| $query->execute(); | |
| if (!$query) { | |
| databaseError($conn->errorInfo()); | |
| return Array(); | |
| } | |
| $r = $query->fetch(PDO :: FETCH_ASSOC); | |
| return $r['arrival_time']; | |
| } | |
| function getActiveTrips($time) { | |
| global $conn; | |
| if ($time == "") | |
| $time = current_time(); | |
| $query = "Select distinct stop_times.trip_id, start_times.arrival_time as start_time, end_times.arrival_time as end_time from stop_times, (SELECT trip_id,arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL | |
| AND stop_sequence = '1') as start_times, (SELECT trip_id,max(arrival_time) as arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL group by trip_id) as end_times | |
| WHERE start_times.trip_id = end_times.trip_id AND stop_times.trip_id = end_times.trip_id AND :time > start_times.arrival_time AND :time < end_times.arrival_time"; | |
| debug($query, "database"); | |
| $query = $conn->prepare($query); | |
| $query->bindParam(":time", $time); | |
| $query->execute(); | |
| if (!$query) { | |
| databaseError($conn->errorInfo()); | |
| return Array(); | |
| } | |
| return $query->fetchAll(); | |
| } | |
| function viaPoints($tripID, $stop_sequence = "") { | |
| global $conn; | |
| $query = "SELECT stops.stop_id, stop_name, arrival_time | |
| FROM stop_times join stops on stops.stop_id = stop_times.stop_id | FROM stop_times join stops on stops.stop_id = stop_times.stop_id |
| WHERE stop_times.trip_id = '$tripid' | WHERE stop_times.trip_id = :tripID |
| AND stop_sequence > '$stop_sequence' | " . ($stop_sequence != "" ? " AND stop_sequence > :stop_sequence " : "") ." ORDER BY stop_sequence"; |
| AND substr(stop_code,1,2) != 'Wj' ORDER BY stop_sequence"; | debug($query, "database"); |
| debug($query,"database"); | $query = $conn->prepare($query); |
| $result = pg_query($conn, $query); | if ($stop_sequence != "") |
| if (!$result) { | $query->bindParam(":stop_sequence", $stop_sequence); |
| databaseError(pg_result_error($result)); | $query->bindParam(":tripID", $tripID); |
| return Array(); | $query->execute(); |
| } | if (!$query) { |
| $pointNames = pg_fetch_all($result); | databaseError($conn->errorInfo()); |
| return r_implode(", ", $pointNames); | return Array(); |
| } | } |
| return $query->fetchAll(); | |
| } | |
| function viaPointNames($tripid, $stop_sequence = "") { | |
| $viaPointNames = Array(); | |
| foreach (viaPoints($tripid, $stop_sequence) as $point) { | |
| $viaPointNames[] = $point['stop_name']; | |
| } | |
| if (sizeof($viaPointNames) > 0) { | |
| return r_implode(", ", $viaPointNames); | |
| } else { | |
| return ""; | |
| } | |
| } | |
| ?> | ?> |