org.onebusaway.webapp.actions.where.TripAction.java Source code

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Here is the source code for org.onebusaway.webapp.actions.where.TripAction.java

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/**
 * Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
 *
 * 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.
 */
package org.onebusaway.webapp.actions.where;

import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Actions;
import org.onebusaway.exceptions.NoSuchTripServiceException;
import org.onebusaway.exceptions.ServiceException;
import org.onebusaway.transit_data.model.TripStopTimeBean;
import org.onebusaway.transit_data.model.TripStopTimesBean;
import org.onebusaway.transit_data.model.trips.TripDetailsBean;
import org.onebusaway.transit_data.model.trips.TripDetailsQueryBean;
import org.onebusaway.transit_data.model.trips.TripStatusBean;
import org.onebusaway.transit_data.services.TransitDataService;
import org.springframework.beans.factory.annotation.Autowired;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.conversion.annotations.TypeConversion;

public class TripAction extends ActionSupport {

    private static final long serialVersionUID = 1L;

    @Autowired
    private TransitDataService _service;

    private String _id;

    private Date _serviceDate;

    private Date _time;

    private TripDetailsBean _tripDetails;

    private TimeZone _timeZone;

    private long _actualServiceDate;

    private String _vehicleId;

    private String _stopId;

    private boolean _showArrivals = false;

    public void setId(String id) {
        _id = id;
    }

    public String getId() {
        return _id;
    }

    @TypeConversion(converter = "org.onebusaway.presentation.impl.conversion.DateTimeConverter")
    public void setServiceDate(Date serviceDate) {
        _serviceDate = serviceDate;
    }

    public Date getServiceDate() {
        return _serviceDate;
    }

    @TypeConversion(converter = "org.onebusaway.presentation.impl.conversion.DateTimeConverter")
    public void setTime(Date time) {
        _time = time;
    }

    public Date getTime() {
        return _time;
    }

    public void setVehicleId(String vehicleId) {
        _vehicleId = vehicleId;
    }

    public String getVehicleId() {
        return _vehicleId;
    }

    public void setStopId(String stopId) {
        _stopId = stopId;
    }

    public String getStopId() {
        return _stopId;
    }

    public void setShowArrivals(boolean showArrivals) {
        _showArrivals = showArrivals;
    }

    public boolean isShowArrivals() {
        return _showArrivals;
    }

    public TripDetailsBean getResult() {
        return _tripDetails;
    }

    public TimeZone getTimeZone() {
        return _timeZone;
    }

    @Override
    @Actions({ @Action(value = "/where/standard/trip"), @Action(value = "/where/iphone/trip"),
            @Action(value = "/where/text/trip") })
    public String execute() throws ServiceException {

        if (_id == null)
            return INPUT;

        if (_time == null)
            _time = new Date();

        TripDetailsQueryBean query = new TripDetailsQueryBean();
        query.setTripId(_id);
        if (_serviceDate != null)
            query.setServiceDate(_serviceDate.getTime());
        query.setVehicleId(_vehicleId);

        query.setTime(_time.getTime());

        _tripDetails = _service.getSingleTripDetails(query);

        if (_tripDetails == null)
            throw new NoSuchTripServiceException(_id);

        TripStopTimesBean stopTimes = _tripDetails.getSchedule();
        _timeZone = TimeZone.getTimeZone(stopTimes.getTimeZone());

        _actualServiceDate = getActualServiceDate();
        return SUCCESS;
    }

    public int getStopTimeRaw(TripStopTimeBean stopTime) {
        return _showArrivals ? stopTime.getArrivalTime() : stopTime.getDepartureTime();
    }

    public Date getStopTime(TripStopTimeBean stopTime) {
        int t = getStopTimeRaw(stopTime);
        return new Date(_actualServiceDate + t * 1000);
    }

    private long getActualServiceDate() {
        TripStatusBean status = _tripDetails.getStatus();

        if (status != null)
            return status.getServiceDate();

        Calendar c = Calendar.getInstance(_timeZone);

        // Initial set time to noon
        c.set(Calendar.HOUR_OF_DAY, 12);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);

        // Subtract 12 hours. Usually takes you to midnight, except on DST days
        c.add(Calendar.HOUR_OF_DAY, -12);

        return c.getTimeInMillis();
    }

}