Android Open Source - Is-It-Here-Yet Route List Mapper

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * Is It Here Yet? is a simple Android application that reads the
 * NextBus public XML feed and displays the arrival times for
 * transit vehicles for a chosen stop. //from w  w w.ja  v  a 2 s .  c o  m
 * Copyright (C) 2011 Matthew Lam
 *
 * Is It Here Yet? is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Is It Here Yet? is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Is It Here Yet?.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.sudfiwe.iihy.io.mapper;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import com.sudfiwe.iihy.data.route.Route;
import com.sudfiwe.iihy.io.DBResult;
import com.sudfiwe.iihy.util.Filter;
import com.sudfiwe.iihy.util.Filter.FilterType;

public class RouteListMapper extends AbstractFeedMapper<Route> {

  public DBResult<ArrayList<Route>> getList(Filter f) {

    DBResult<ArrayList<Route>> ret=
      new DBResult<ArrayList<Route>>();

    String url=AbstractFeedMapper.URL+"?"+
    AbstractFeedMapper.QUERY_COMMAND+"="+
    AbstractFeedMapper.VALUE_COMMAND_ROUTELIST;

    this.setAfterFirstQueryComponent(true);
    url=url+this.createQuery(f,FilterType.ROUTE_AGENCYTAG,
        AbstractFeedMapper.QUERY_AGENCY);

    URL nextBusURL;;
    try {
      nextBusURL=new URL(url);

      Document doc=this.getXMLFromURL(nextBusURL);

      Element root=doc.getDocumentElement();

      if (root.getTagName().equals("body")) {

        ArrayList<Route> list=new ArrayList<Route>();
        
        NodeList children=root.getElementsByTagName(
        "route");

        for (int currNode=0;currNode<children.getLength();currNode++) {

          Element routeElement=
            (Element)children.item(currNode);

          String tag=
            routeElement.getAttribute("tag");
          String title=
            routeElement.getAttribute("title");
          String shortTitle=
            routeElement.getAttribute("shortTitle");

          list.add(new Route(tag,title,shortTitle,
              (String)f.getEntry(FilterType.ROUTE_AGENCYTAG)));
        }
        
        ret.setSuccess(true);
        ret.setObject(list);
      }
    } catch (MalformedURLException e) {
      ret.setSuccess(false);
      ret.setMessage(e.getMessage());
    } catch (IOException e) {
      ret.setSuccess(false);
      ret.setMessage(e.getMessage());
    } catch (ParserConfigurationException e) {
      ret.setSuccess(false);
      ret.setMessage(e.getMessage());
    } catch (SAXException e) {
      ret.setSuccess(false);
      ret.setMessage(e.getMessage());
    }

    return ret;
  }

  public DBResult<Route> getItem(Filter f) {

    DBResult<Route> ret=new DBResult<Route>();

    ret.setMessage("Feature not implemented.");

    return ret;
  }
}

Java Source Code List

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