traininfo/provider/XmlStationProvider.java

package dk.thoerup.traininfo.provider;


import java.net.URLEncoder;
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.AndroidTimeoutCache;
import dk.thoerup.traininfo.util.DownloadUtil;
import dk.thoerup.traininfo.util.XmlUtil;

public class XmlStationProvider implements StationProvider {
        
        final static int CACHE_TIMEOUT = 300*1000;

        //List<StationBean> stations = new ArrayList<StationBean>();    
        AndroidTimeoutCache<String, List<StationBean>> stationCache = new AndroidTimeoutCache<String, List<StationBean>>(CACHE_TIMEOUT);
        

        @Override
        public List<StationBean> lookupStations(Location location) {
                String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + (float)location.getLatitude() + "&longitude=" + (float)location.getLongitude();
                Log.i("url", url);
                return lookupStationsWorker(url);
        }
        
        @Override
        public List<StationBean> lookupStationsByName(String name) {            
                
        //      String url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + Uri.encode(name);
                String url = "";
                
                try {
                        url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + URLEncoder.encode(name, "ISO8859-1");    
                } catch (Exception e) {
                        Log.e("lookupStations", "Encoding failed", e);
                }
                
                Log.i("url", url);
                return lookupStationsWorker(url);
        }
        
        
        @Override
        public List<StationBean> lookupStationsByIds(String ids) {
                String url = "";
                url = XmlUtil.SERVICE_BASE + "/LocateStations?list=" + ids;
                
                Log.i("url", url);
                return lookupStationsWorker(url);
        }
        
        public List<StationBean> lookupStationsWorker(String url) {
                
                List<StationBean> tmpStations = stationCache.get(url);
                
                if (tmpStations != null) {
                        Log.i("lookupStations", "cache hit " + url);
                } else {
                        tmpStations = fetchStations(url);
                        
                        if (tmpStations != null) {
                                stationCache.put(url, tmpStations);
                        }
                }
                
                return tmpStations;
        }


        public List<StationBean> fetchStations(String url) {

                try {
                        List<StationBean> stations = new ArrayList<StationBean>();
                        
                        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("calcdist"))
                                                station.setDistance( (int) Double.parseDouble(content) );
                                        
                                        if (nodeName.equals("address"))
                                                station.setAddress( content );
                                        
                                        if (nodeName.equals("regional"))
                                                station.setRegional( Boolean.parseBoolean(content) );
                                        
                                        if (nodeName.equals("strain"))
                                                station.setSTrain( Boolean.parseBoolean(content) );
                                        
                                        if (nodeName.equals("metro"))
                                                station.setMetro( Boolean.parseBoolean(content) );

                                }
                                stations.add(station);                          
                        }
                        return stations;
                        
                        
                } catch (Exception e) {
                        Log.e("XmlStationProvider", "lookupStations: ", e);
                        return null;
                }
        }
}
1	package dk.thoerup.traininfo.provider;
2
3
4	import java.net.URLEncoder;
5	import java.util.ArrayList;
6	import java.util.List;
7
8	import org.w3c.dom.Document;
9	import org.w3c.dom.Node;
10	import org.w3c.dom.NodeList;
11
12	import android.location.Location;
13	import android.util.Log;
14	import dk.thoerup.traininfo.StationBean;
15	import dk.thoerup.traininfo.util.AndroidTimeoutCache;
16	import dk.thoerup.traininfo.util.DownloadUtil;
17	import dk.thoerup.traininfo.util.XmlUtil;
18
19	public class XmlStationProvider implements StationProvider {
20
21	final static int CACHE_TIMEOUT = 300*1000;
22
23	//List<StationBean> stations = new ArrayList<StationBean>();
24	AndroidTimeoutCache<String, List<StationBean>> stationCache = new AndroidTimeoutCache<String, List<StationBean>>(CACHE_TIMEOUT);
25
26
27
28	@Override
29	public List<StationBean> lookupStations(Location location) {
30	String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + (float)location.getLatitude() + "&longitude=" + (float)location.getLongitude();
31	Log.i("url", url);
32	return lookupStationsWorker(url);
33	}
34
35	@Override
36	public List<StationBean> lookupStationsByName(String name) {
37
38	// String url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + Uri.encode(name);
39	String url = "";
40
41	try {
42	url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + URLEncoder.encode(name, "ISO8859-1");
43	} catch (Exception e) {
44	Log.e("lookupStations", "Encoding failed", e);
45	}
46
47	Log.i("url", url);
48	return lookupStationsWorker(url);
49	}
50
51
52	@Override
53	public List<StationBean> lookupStationsByIds(String ids) {
54	String url = "";
55	url = XmlUtil.SERVICE_BASE + "/LocateStations?list=" + ids;
56
57	Log.i("url", url);
58	return lookupStationsWorker(url);
59	}
60
61	public List<StationBean> lookupStationsWorker(String url) {
62
63	List<StationBean> tmpStations = stationCache.get(url);
64
65	if (tmpStations != null) {
66	Log.i("lookupStations", "cache hit " + url);
67	} else {
68	tmpStations = fetchStations(url);
69
70	if (tmpStations != null) {
71	stationCache.put(url, tmpStations);
72	}
73	}
74
75	return tmpStations;
76	}
77
78
79	public List<StationBean> fetchStations(String url) {
80
81	try {
82	List<StationBean> stations = new ArrayList<StationBean>();
83
84	String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
85
86
87	Document doc = XmlUtil.parseXML(xml);
88	Node rootNode = doc.getDocumentElement(); // stations
89	NodeList stationList = rootNode.getChildNodes();
90
91
92	for (int i=0; i<stationList.getLength(); i++) {
93	Node stationNode = stationList.item(i);
94
95	if (! stationNode.getNodeName().equals("station"))
96	continue;
97
98	StationBean station = new StationBean();
99
100	NodeList stationElements = stationNode.getChildNodes();
101	for (int j=0; j<stationElements.getLength(); j++) {
102	Node current = stationElements.item(j);
103
104	String content = null;
105	if (current.getFirstChild() != null)
106	content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value
107
108	String nodeName = current.getNodeName();
109
110	if (nodeName.equals("id"))
111	station.setId( Integer.parseInt(content));
112
113	if (nodeName.equals("name"))
114	station.setName(content);
115
116	if (nodeName.equals("latitude"))
117	station.setLatitude( Double.parseDouble(content) );
118
119	if (nodeName.equals("longitude"))
120	station.setLongitude( Double.parseDouble(content) );
121
122	if (nodeName.equals("calcdist"))
123	station.setDistance( (int) Double.parseDouble(content) );
124
125	if (nodeName.equals("address"))
126	station.setAddress( content );
127
128	if (nodeName.equals("regional"))
129	station.setRegional( Boolean.parseBoolean(content) );
130
131	if (nodeName.equals("strain"))
132	station.setSTrain( Boolean.parseBoolean(content) );
133
134	if (nodeName.equals("metro"))
135	station.setMetro( Boolean.parseBoolean(content) );
136
137	}
138	stations.add(station);
139	}
140	return stations;
141
142
143	} catch (Exception e) {
144	Log.e("XmlStationProvider", "lookupStations: ", e);
145	return null;
146	}
147	}
148	}