Android Open Source - android-nextbus Online Commands

From Project

License

The source code is released under:
MIT License
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Java Source Code

package com.andrei.nextbus.library.commands;
/*from  www.  j a  v  a  2s  .c  om*/
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import com.andrei.nextbus.library.objects.Agency;
import com.andrei.nextbus.library.objects.AgencyStopPair;
import com.andrei.nextbus.library.objects.Direction;
import com.andrei.nextbus.library.objects.MultiStopDirection;
import com.andrei.nextbus.library.objects.MultiStopPredictions;
import com.andrei.nextbus.library.objects.Path;
import com.andrei.nextbus.library.objects.Prediction;
import com.andrei.nextbus.library.objects.Route;
import com.andrei.nextbus.library.objects.Stop;
import com.andrei.nextbus.library.objects.Vehicle;
import com.andrei.nextbus.library.parsers.Parser;
import com.andrei.nextbus.library.parsers.XmlTagFilter;

public class OnlineCommands extends Commands {

  private static URL createURL (String s){
    try {
      return new URL (s);
    } catch (MalformedURLException e){
      e.printStackTrace();
      return null;
    }
  }

  public static List <Agency> getAgencies(){
    URL url = createURL ("http://webservices.nextbus.com/service/publicXMLFeed?command=agencyList");
    return getAgencies (Parser.getXmlAsString(url));
  }

  public static List <Direction> getDirections(String agencyTag, String routeTag){
    URL url = createURL ("http://webservices.nextbus.com/service/publicXMLFeed?command=routeConfig&a="+agencyTag+"&r="+routeTag);
    return getDirections (Parser.getXmlAsString(url));
  }

  public static List <Path> getPathsForRoute (String agencyTag, String routeTag){
    URL url = createURL("http://webservices.nextbus.com/service/publicXMLFeed?command=routeConfig&a="+agencyTag+"&r="+routeTag);
    return getPaths (Parser.getXmlAsString(url));
  }


  public static List <Route> getRoutes(String agencyTag){
    URL url = createURL("http://webservices.nextbus.com/service/publicXMLFeed?command=routeList&a="+agencyTag);
    return getRoutes (Parser.getXmlAsString(url));
  }

  public static List <Stop> getAllStops(String agencyTag, String routeTag){
    URL url = createURL("http://webservices.nextbus.com/service/publicXMLFeed?command=routeConfig&a="+agencyTag+"&r="+routeTag);
    return getAllStops (Parser.getXmlAsString(url));
  }

  public static List <Stop> getAllStopsForDirection (String agencyTag, String routeTag, String directionTag){
    URL url = createURL("http://webservices.nextbus.com/service/publicXMLFeed?command=routeConfig&a="+agencyTag+"&r="+routeTag);
    return getStopsForDirection(Parser.getXmlAsString(url), directionTag);
  }

  public static List <Prediction> getPredictionsForStop (String agencyTag, String routeTag, String stopTag){
    URL url = createURL("http://webservices.nextbus.com/service/publicXMLFeed?command=predictions&a="+agencyTag+"&r="+routeTag+"&s="+stopTag);
    return getPredictionsForStop (Parser.getXmlAsString(url));
  }

  public static List <Vehicle> getVehicles (String agencyTag, String routeTag, long timeFilter){
    if (timeFilter < 0){
      timeFilter = 0L;
    }
    URL url = createURL ("http://webservices.nextbus.com/service/publicXMLFeed?command=vehicleLocations&a="+agencyTag+"&r="+routeTag+"&t="+timeFilter);
    return getVehicles (Parser.getXmlAsString(url));
  }

  public static List <MultiStopPredictions> getPredictionsForMultiStops (String agencyTag, AgencyStopPair ... stops){
    StringBuilder s = new StringBuilder ("http://webservices.nextbus.com/service/publicXMLFeed?command=predictionsForMultiStops&a=")
    .append(agencyTag);
    for (int x = 0; x < stops.length;x++){
      s.append("&stops=")
      .append (stops[x].getConcatedTuple());
    }
    List <MultiStopPredictions> predictions = new ArrayList <MultiStopPredictions> ();
    URL url = createURL (s.toString());
    String content = Parser.getXmlAsString(url);
    XmlTagFilter prediction = new XmlTagFilter (2, "predictions");
    List <MultiStopPredictions> mspreds = Parser.parse(MultiStopPredictions.class,prediction, content);
    for (int x = 0; x < mspreds.size();x++){
      MultiStopPredictions m = mspreds.get(x);
      prediction.setAttrributeSpec("stopTag", m.attribs.get("stopTag"));
      XmlTagFilter pred = new XmlTagFilter (4,"prediction");
      List <Prediction> preds = Parser.parse(Prediction.class, pred, content, prediction);
      MultiStopDirection d = new MultiStopDirection ();
      d.predictions = preds;
      List <MultiStopDirection> l = new ArrayList <MultiStopDirection> ();
      l.add(d);
      m.directions = l; 
    }
    return predictions;
  }
}
Java Source Code List
