traininfo/provider/XmlStationProvider.java

package dk.thoerup.traininfo.provider;

import java.util.ArrayList;
import java.util.List;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import android.location.Location;
import android.util.Log;
import dk.thoerup.traininfo.StationBean;
import dk.thoerup.traininfo.util.DownloadUtil;
import dk.thoerup.traininfo.util.XmlUtil;

public class XmlStationProvider implements StationProvider {

        List<StationBean> stations = new ArrayList<StationBean>();      
        
        
        @Override
        public List<StationBean> getStations() {
                return stations;
        }

        @Override
        public boolean lookupStations(Location location) {
                boolean success = false;
                String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + location.getLatitude() + "&longitude=" + location.getLongitude();
                Log.i("url", url);
                try {
                        stations.clear();
                        
                        String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
                        
                        
                        Document doc = XmlUtil.parseXML(xml);
                        Node rootNode = doc.getDocumentElement(); // stations
                        NodeList stationList = rootNode.getChildNodes();
                        

                        for (int i=0; i<stationList.getLength(); i++) {
                                Node stationNode = stationList.item(i);
                                
                                if (! stationNode.getNodeName().equals("station"))
                                        continue;
        
                                StationBean station = new StationBean();
                                
                                NodeList stationElements = stationNode.getChildNodes();
                                for (int j=0; j<stationElements.getLength(); j++) {     
                                        Node current = stationElements.item(j);
                                                                                
                                        String content = null;
                                        if (current.getFirstChild() != null) 
                                                content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value
                                        
                                        String nodeName = current.getNodeName();
                                        
                                        if (nodeName.equals("id"))
                                                station.setId( Integer.parseInt(content));
                                        
                                        if (nodeName.equals("name"))
                                                station.setName(content);
                                        
                                        if (nodeName.equals("latitude"))
                                                station.setLatitude( Double.parseDouble(content) );
                                        
                                        if (nodeName.equals("longitude"))
                                                station.setLongitude( Double.parseDouble(content) );
                                        
                                        if (nodeName.equals("stationcode"))
                                                station.setCode(content);
                                        
                                        if (nodeName.equals("calcdist"))
                                                station.setDistance( (int) Double.parseDouble(content) );

                                }
                                stations.add(station);                          
                        }
                        success = true;
                        
                        
                } catch (Exception e) {
                        Log.e("XmlStationProvider", "lookupStations: ", e);
                }
                return success;
        }
}
1	package dk.thoerup.traininfo.provider;
2
3	import java.util.ArrayList;
4	import java.util.List;
5
6	import org.w3c.dom.Document;
7	import org.w3c.dom.Node;
8	import org.w3c.dom.NodeList;
9
10	import android.location.Location;
11	import android.util.Log;
12	import dk.thoerup.traininfo.StationBean;
13	import dk.thoerup.traininfo.util.DownloadUtil;
14	import dk.thoerup.traininfo.util.XmlUtil;
15
16	public class XmlStationProvider implements StationProvider {
17
18	List<StationBean> stations = new ArrayList<StationBean>();
19
20
21	@Override
22	public List<StationBean> getStations() {
23	return stations;
24	}
25
26	@Override
27	public boolean lookupStations(Location location) {
28	boolean success = false;
29	String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + location.getLatitude() + "&longitude=" + location.getLongitude();
30	Log.i("url", url);
31	try {
32	stations.clear();
33
34	String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
35
36
37	Document doc = XmlUtil.parseXML(xml);
38	Node rootNode = doc.getDocumentElement(); // stations
39	NodeList stationList = rootNode.getChildNodes();
40
41
42	for (int i=0; i<stationList.getLength(); i++) {
43	Node stationNode = stationList.item(i);
44
45	if (! stationNode.getNodeName().equals("station"))
46	continue;
47
48	StationBean station = new StationBean();
49
50	NodeList stationElements = stationNode.getChildNodes();
51	for (int j=0; j<stationElements.getLength(); j++) {
52	Node current = stationElements.item(j);
53
54	String content = null;
55	if (current.getFirstChild() != null)
56	content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value
57
58	String nodeName = current.getNodeName();
59
60	if (nodeName.equals("id"))
61	station.setId( Integer.parseInt(content));
62
63	if (nodeName.equals("name"))
64	station.setName(content);
65
66	if (nodeName.equals("latitude"))
67	station.setLatitude( Double.parseDouble(content) );
68
69	if (nodeName.equals("longitude"))
70	station.setLongitude( Double.parseDouble(content) );
71
72	if (nodeName.equals("stationcode"))
73	station.setCode(content);
74
75	if (nodeName.equals("calcdist"))
76	station.setDistance( (int) Double.parseDouble(content) );
77
78	}
79	stations.add(station);
80	}
81	success = true;
82
83
84	} catch (Exception e) {
85	Log.e("XmlStationProvider", "lookupStations: ", e);
86	}
87	return success;
88	}
89	}