prod/net/jaekl/frank/octranspo/Trip.java

   1 package net.jaekl.frank.octranspo;
   2
   3 import java.text.DateFormat;
   4 import java.text.ParseException;
   5 import java.text.SimpleDateFormat;
   6 import java.util.Date;
   7
   8 import net.jaekl.qd.util.ParseUtils;
   9 import net.jaekl.qd.xml.ParseResult;
  10 import net.jaekl.qd.xml.XmlParseException;
  11
  12 public class Trip extends ParseResult {
  13         static final String TRIP = "Trip";
  14
  15         static final String TRIP_DESTINATION = "TripDestination";
  16         static final String TRIP_START_TIME = "TripStartTime";
  17         static final String ADJUSTED_SCHEDULE_TIME = "AdjustedScheduleTime";
  18         static final String ADJUSTMENT_AGE = "AdjustmentAge";
  19         static final String LAST_TRIP_OF_SCHEDULE = "LastTripOfSchedule";
  20         static final String BUS_TYPE = "BusType";
  21         static final String GPS_SPEED = "GPSSpeed";
  22         static final String LATITUDE = "Latitude";
  23         static final String LONGITUDE = "Longitude";
  24
  25         static final String[] INTERNAL = { TRIP_DESTINATION,
  26                                                TRIP_START_TIME,
  27                                                ADJUSTED_SCHEDULE_TIME,
  28                                                ADJUSTMENT_AGE,
  29                                                LAST_TRIP_OF_SCHEDULE,
  30                                                BUS_TYPE,
  31                                                GPS_SPEED,
  32                                                LATITUDE,
  33                                                LONGITUDE };
  34         static final Object[][] EXTERNAL = {};
  35
  36     String  m_dest;      // destination
  37     Date    m_start;     // time at which the trip started / is scheduled to start
  38     int     m_adjTime;   // minutes until bus is predicted to arrive
  39     double  m_adjAge;    // time since the last GPS data was received, in minutes (possibly fractional)
  40     boolean m_lastTrip;  // is this the last scheduled trip of the day?
  41     String  m_busType;   // type of bus
  42     double  m_speed;     // speed (km/h) when last polled
  43     double  m_long;      // longitude
  44     double  m_lat;       // latitude
  45
  46     DateFormat m_dateFormat;
  47     Date       m_constructed;   // DateTime when this object was constructed
  48
  49     public Trip() {
  50         super(TRIP, INTERNAL, EXTERNAL);
  51         m_dest = "";
  52         m_start = new Date();
  53         m_adjTime = 0;
  54         m_adjAge = 0.0;
  55         m_lastTrip = false;
  56         m_busType = "";
  57         m_speed = 0.0;
  58         m_long = 0.0;
  59         m_lat = 0.0;
  60
  61         m_dateFormat = new SimpleDateFormat("hh:mm");
  62         m_constructed = new Date();
  63     }
  64
  65     public Trip(Trip other) {
  66         super(TRIP, INTERNAL, EXTERNAL);
  67         m_dest = other.m_dest;
  68         m_start = other.m_start;
  69         m_adjTime = other.m_adjTime;
  70         m_adjAge = other.m_adjAge;
  71         m_lastTrip = other.m_lastTrip;
  72         m_busType = other.m_busType;
  73         m_speed = other.m_speed;
  74         m_long = other.m_long;
  75         m_lat = other.m_lat;
  76         m_constructed = other.m_constructed;
  77         }
  78
  79         public String getDest() { return m_dest; }
  80     public Date getStart() { return m_start; }
  81     public int getAdjTime() { return m_adjTime; }
  82     public double getAdjAge() { return m_adjAge; }
  83     public boolean isLastTrip() { return m_lastTrip; }
  84     public String getBusType() { return m_busType; }
  85     public double getSpeed() { return m_speed; }
  86     public double getLongitude() { return m_long; }
  87     public double getLatitude() { return m_lat; }
  88
  89     // Estimated (Date)Time of Arrival of this trip at the stop
  90     public Date getETA() { return new Date(m_constructed.getTime() + (long)(1000 * 60 * m_adjTime)); }
  91
  92     // (Date)Time when the GPS for this bus was last read
  93     public Date getGPSTime() { return new Date(m_constructed.getTime() - (long)(1000 * 60 * m_adjAge)); }
  94
  95     // ---------------------------
  96     // ParseResult implementation:
  97
  98         @Override
  99         public void endContents(String uri, String localName, String qName,     String chars) throws XmlParseException
 100         {
 101                 try {
 102                         if (TRIP_DESTINATION.equals(localName)) {
 103                                 m_dest = chars;
 104                         }
 105                         else if (TRIP_START_TIME.equals(localName)) {
 106                                 m_start = m_dateFormat.parse(chars);
 107                         }
 108                         else if (ADJUSTED_SCHEDULE_TIME.equals(localName)) {
 109                                 m_adjTime = ParseUtils.parseInt(chars);
 110                         }
 111                         else if (ADJUSTMENT_AGE.equals(localName)) {
 112                                 m_adjAge = ParseUtils.parseDouble(chars);
 113                         }
 114                         else if (LAST_TRIP_OF_SCHEDULE.equals(localName)) {
 115                                 m_lastTrip = Boolean.parseBoolean(chars);
 116                         }
 117                         else if (BUS_TYPE.equals(localName)) {
 118                                 m_busType = chars;
 119                         }
 120                         else if (GPS_SPEED.equals(localName)) {
 121                                 m_speed = ParseUtils.parseDouble(chars);
 122                         }
 123                         else if (LONGITUDE.equals(localName)) {
 124                                 m_long = ParseUtils.parseDouble(chars);
 125                         }
 126                         else if (LATITUDE.equals(localName)) {
 127                                 m_lat = ParseUtils.parseDouble(chars);
 128                         }
 129                 } catch (ParseException pe) {
 130                         throw new XmlParseException(pe);
 131                 }
 132         }
 133
 134         @Override
 135         public void endExternal(String uri, String localName, String qName) throws XmlParseException
 136         {
 137                 // no externally-parsed children
 138         }
 139 }
 140