--- a/include/db/trip-dao.inc.php +++ b/include/db/trip-dao.inc.php @@ -1,115 +1,240 @@ <?php -function getTrip($tripID) { - global $conn; - $query = "Select * from trips where trip_id = '$tripID' join routes on trips.route_id = routes.route_id LIMIT 1"; - debug($query,"database"); - $result = pg_query($conn, $query); - if (!$result) { - databaseError(pg_result_error($result)); - return Array(); - } - return pg_fetch_assoc($result); - } -function getTripShape() { - /* def handle_json_GET_tripstoptimes(self, params): - schedule = self.server.schedule - try: - trip = schedule.GetTrip(params.get('trip')) - except KeyError: - # if a non-existent trip is searched for, the return nothing - return - time_stops = trip.GetTimeInterpolatedStops() - stops = [] - times = [] - for arr,ts,is_timingpoint in time_stops: - stops.append(StopToTuple(ts.stop)) - times.append(arr) - return [stops, times] - - def handle_json_GET_tripshape(self, params): - schedule = self.server.schedule - try: - trip = schedule.GetTrip(params.get('trip')) - except KeyError: - # if a non-existent trip is searched for, the return nothing - return - points = [] - if trip.shape_id: - shape = schedule.GetShape(trip.shape_id) - for (lat, lon, dist) in shape.points: - points.append((lat, lon)) - else: - time_stops = trip.GetTimeStops() - for arr,dep,stop in time_stops: - points.append((stop.stop_lat, stop.stop_lon)) - return points*/ -} -function getTimeInterpolatedTrip($tripID) { - /* rv = [] - - stoptimes = self.GetStopTimes() - # If there are no stoptimes [] is the correct return value but if the start - # or end are missing times there is no correct return value. - if not stoptimes: - return [] - if (stoptimes[0].GetTimeSecs() is None or - stoptimes[-1].GetTimeSecs() is None): - raise ValueError("%s must have time at first and last stop" % (self)) - - cur_timepoint = None - next_timepoint = None - distance_between_timepoints = 0 - distance_traveled_between_timepoints = 0 - - for i, st in enumerate(stoptimes): - if st.GetTimeSecs() != None: - cur_timepoint = st - distance_between_timepoints = 0 - distance_traveled_between_timepoints = 0 - if i + 1 < len(stoptimes): - k = i + 1 - distance_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[k-1].stop, stoptimes[k].stop) - while stoptimes[k].GetTimeSecs() == None: - k += 1 - distance_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[k-1].stop, stoptimes[k].stop) - next_timepoint = stoptimes[k] - rv.append( (st.GetTimeSecs(), st, True) ) - else: - distance_traveled_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[i-1].stop, st.stop) - distance_percent = distance_traveled_between_timepoints / distance_between_timepoints - total_time = next_timepoint.GetTimeSecs() - cur_timepoint.GetTimeSecs() - time_estimate = distance_percent * total_time + cur_timepoint.GetTimeSecs() - rv.append( (int(round(time_estimate)), st, False) ) - - return rv*/ -} -function getTimeInterpolatedTripAtStop($trip_id, $stop_sequence) { - foreach(getTimeInterpolatedTrip($tripID) as $tripStop) { - if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop; - } - return Array(); -} - -function getTripStartTime($tripID) { - $query = 'SELECT arrival_secs,departure_secs FROM stop_times WHERE trip_id=? ORDER BY stop_sequence LIMIT 1'; - -} - -function viaPointNames($tripid, $stopid) -{ - global $conn; - $query = "SELECT stop_name +function getTrip($tripID) +{ + global $conn; + $query = "Select * from trips + join routes on trips.route_id = routes.route_id + where trip_id = :tripID + LIMIT 1"; + debug($query, "database"); + $query = $conn->prepare($query); + $query->bindParam(":tripID", $tripID); + $query->execute(); + if (!$query) { + databaseError($conn->errorInfo()); + return Array(); + } + return $query->fetch(PDO::FETCH_ASSOC); +} +function getTripShape($tripID) +{ + global $conn; + $query = "SELECT ST_AsKML(ST_MakeLine(geometry(a.position))) as the_route +FROM (SELECT position, + stop_sequence, trips.trip_id +FROM stop_times +join trips on trips.trip_id = stop_times.trip_id +join stops on stops.stop_id = stop_times.stop_id +WHERE trips.trip_id = :tripID ORDER BY stop_sequence) as a group by a.trip_id"; + debug($query, "database"); + $query = $conn->prepare($query); + $query->bindParam(":tripID", $tripID); + $query->execute(); + if (!$query) { + databaseError($conn->errorInfo()); + return Array(); + } + return $query->fetchColumn(0); +} +function getTimeInterpolatedTrip($tripID, $range = "") +{ + global $conn; + $query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code, + stop_sequence,service_id,trips.route_id,route_short_name,route_long_name +FROM stop_times +join trips on trips.trip_id = stop_times.trip_id +join routes on trips.route_id = routes.route_id +join stops on stops.stop_id = stop_times.stop_id +WHERE trips.trip_id = :tripID $range ORDER BY stop_sequence"; + debug($query, "database"); + $query = $conn->prepare($query); + $query->bindParam(":tripID", $tripID); + $query->execute(); + if (!$query) { + databaseError($conn->errorInfo()); + return Array(); + } + $stopTimes = $query->fetchAll(); + $cur_timepoint = Array(); + $next_timepoint = Array(); + $distance_between_timepoints = 0.0; + $distance_traveled_between_timepoints = 0.0; + $rv = Array(); + foreach ($stopTimes as $i => $stopTime) { + if ($stopTime['arrival_time'] != "") { + // is timepoint + $cur_timepoint = $stopTime; + $distance_between_timepoints = 0.0; + $distance_traveled_between_timepoints = 0.0; + if ($i + 1 < sizeof($stopTimes)) { + $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"]); + while ($stopTimes[$k]["arrival_time"] == "" && $k + 1 < sizeof($stopTimes)) { + $k+= 1; + //echo "k".$k; + $distance_between_timepoints+= distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); + } + $next_timepoint = $stopTimes[$k]; + + } + $rv[] = $stopTime; + } + else { + // is untimed point + //echo "i".$i; + $distance_traveled_between_timepoints+= distance($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>"; + $distance_percent = $distance_traveled_between_timepoints / $distance_between_timepoints; + if ($next_timepoint["arrival_time"] != "") { + $total_time = strtotime($next_timepoint["arrival_time"]) - strtotime($cur_timepoint["arrival_time"]); + //echo strtotime($next_timepoint["arrival_time"])." - ".strtotime($cur_timepoint["arrival_time"])."<br>"; + $time_estimate = ($distance_percent * $total_time) + strtotime($cur_timepoint["arrival_time"]); + $stopTime["arrival_time"] = date("H:i:s", $time_estimate); + } + 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) +{ + global $conn; + $query = "Select * from stop_times + where trip_id = :tripID + AND arrival_time IS NOT NULL + AND stop_sequence = '1'"; + debug($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 $r['arrival_time']; +} +function getTripEndTime($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; + $query = "SELECT stops.stop_id, stop_name, arrival_time FROM stop_times join stops on stops.stop_id = stop_times.stop_id -WHERE stop_times.trip_id = '$tripid' -AND stop_sequence > '$stop_sequence' -AND substr(stop_code,1,2) != 'Wj' ORDER BY stop_sequence"; - debug($query,"database"); - $result = pg_query($conn, $query); - if (!$result) { - databaseError(pg_result_error($result)); - return Array(); - } - $pointNames = pg_fetch_all($result); - return r_implode(", ", $pointNames); +WHERE stop_times.trip_id = :tripID +" . ($stop_sequence != "" ? " AND stop_sequence > :stop_sequence " : "") . "AND substr(stop_code,1,2) != 'Wj' ORDER BY stop_sequence"; + debug($query, "database"); + $query = $conn->prepare($query); + if ($stop_sequence != "") $query->bindParam(":stop_sequence", $stop_sequence); + $query->bindParam(":tripID", $tripID); + $query->execute(); + if (!$query) { + databaseError($conn->errorInfo()); + 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 ""; + } } ?>