traininfo/provider/XmlStationProvider.java

package dk.thoerup.traininfo.provider;

import java.net.URI;
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.net.Uri;
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) {
                String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + location.getLatitude() + "&longitude=" + location.getLongitude();
                Log.i("url", url);
                return lookupStationsWorker(url);
        }
        
        @Override
        public boolean lookupStations(String name) {            
                String url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + Uri.encode(name);
                Log.i("url", url);
                return lookupStationsWorker(url);
        }
        
        
        public boolean lookupStationsWorker(String url) {
                boolean success = false;

                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.net.URI;
4	import java.util.ArrayList;
5	import java.util.List;
6
7	import org.w3c.dom.Document;
8	import org.w3c.dom.Node;
9	import org.w3c.dom.NodeList;
10
11	import android.location.Location;
12	import android.net.Uri;
13	import android.util.Log;
14	import dk.thoerup.traininfo.StationBean;
15	import dk.thoerup.traininfo.util.DownloadUtil;
16	import dk.thoerup.traininfo.util.XmlUtil;
17
18	public class XmlStationProvider implements StationProvider {
19
20	List<StationBean> stations = new ArrayList<StationBean>();
21
22
23	@Override
24	public List<StationBean> getStations() {
25	return stations;
26	}
27
28
29	@Override
30	public boolean lookupStations(Location location) {
31	String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + location.getLatitude() + "&longitude=" + location.getLongitude();
32	Log.i("url", url);
33	return lookupStationsWorker(url);
34	}
35
36	@Override
37	public boolean lookupStations(String name) {
38	String url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + Uri.encode(name);
39	Log.i("url", url);
40	return lookupStationsWorker(url);
41	}
42
43
44	public boolean lookupStationsWorker(String url) {
45	boolean success = false;
46
47	try {
48	stations.clear();
49
50	String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
51
52
53	Document doc = XmlUtil.parseXML(xml);
54	Node rootNode = doc.getDocumentElement(); // stations
55	NodeList stationList = rootNode.getChildNodes();
56
57
58	for (int i=0; i<stationList.getLength(); i++) {
59	Node stationNode = stationList.item(i);
60
61	if (! stationNode.getNodeName().equals("station"))
62	continue;
63
64	StationBean station = new StationBean();
65
66	NodeList stationElements = stationNode.getChildNodes();
67	for (int j=0; j<stationElements.getLength(); j++) {
68	Node current = stationElements.item(j);
69
70	String content = null;
71	if (current.getFirstChild() != null)
72	content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value
73
74	String nodeName = current.getNodeName();
75
76	if (nodeName.equals("id"))
77	station.setId( Integer.parseInt(content));
78
79	if (nodeName.equals("name"))
80	station.setName(content);
81
82	if (nodeName.equals("latitude"))
83	station.setLatitude( Double.parseDouble(content) );
84
85	if (nodeName.equals("longitude"))
86	station.setLongitude( Double.parseDouble(content) );
87
88	if (nodeName.equals("stationcode"))
89	station.setCode(content);
90
91	if (nodeName.equals("calcdist"))
92	station.setDistance( (int) Double.parseDouble(content) );
93
94	}
95	stations.add(station);
96	}
97	success = true;
98
99
100	} catch (Exception e) {
101	Log.e("XmlStationProvider", "lookupStations: ", e);
102	}
103	return success;
104	}
105	}