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> getStations() {
                return stations;
        }


        @Override
        public boolean 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 boolean 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 boolean lookupStationsByIds(String ids) {
                String url = "";
                url = XmlUtil.SERVICE_BASE + "/LocateStations?list=" + ids;
                
                Log.i("url", url);
                return lookupStationsWorker(url);
        }
        
        public boolean lookupStationsWorker(String url) {
                boolean result;
                List<StationBean> tmpStations = stationCache.get(url);
                
                if (tmpStations != null) {
                        Log.i("lookupStations", "cache hit " + url);
                        result = true;
                } else {
                        result = fetchStations(url);
                        
                        if (result == true) {
                                stationCache.put(url, stations);
                        }
                }
                
                return result;
        }


        public boolean fetchStations(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("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);                          
                        }
                        success = true;
                        
                        
                } catch (Exception e) {
                        Log.e("XmlStationProvider", "lookupStations: ", e);
                }
                return success;
        }
}
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	@Override
27	public List<StationBean> getStations() {
28	return stations;
29	}
30
31
32	@Override
33	public boolean lookupStations(Location location) {
34	String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + (float)location.getLatitude() + "&longitude=" + (float)location.getLongitude();
35	Log.i("url", url);
36	return lookupStationsWorker(url);
37	}
38
39	@Override
40	public boolean lookupStationsByName(String name) {
41
42	// String url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + Uri.encode(name);
43	String url = "";
44
45	try {
46	url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + URLEncoder.encode(name, "ISO8859-1");
47	} catch (Exception e) {
48	Log.e("lookupStations", "Encoding failed", e);
49	}
50
51	Log.i("url", url);
52	return lookupStationsWorker(url);
53	}
54
55
56	@Override
57	public boolean lookupStationsByIds(String ids) {
58	String url = "";
59	url = XmlUtil.SERVICE_BASE + "/LocateStations?list=" + ids;
60
61	Log.i("url", url);
62	return lookupStationsWorker(url);
63	}
64
65	public boolean lookupStationsWorker(String url) {
66	boolean result;
67	List<StationBean> tmpStations = stationCache.get(url);
68
69	if (tmpStations != null) {
70	Log.i("lookupStations", "cache hit " + url);
71	result = true;
72	} else {
73	result = fetchStations(url);
74
75	if (result == true) {
76	stationCache.put(url, stations);
77	}
78	}
79
80	return result;
81	}
82
83
84	public boolean fetchStations(String url) {
85	boolean success = false;
86
87	try {
88	stations.clear();
89
90	String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
91
92
93	Document doc = XmlUtil.parseXML(xml);
94	Node rootNode = doc.getDocumentElement(); // stations
95	NodeList stationList = rootNode.getChildNodes();
96
97
98	for (int i=0; i<stationList.getLength(); i++) {
99	Node stationNode = stationList.item(i);
100
101	if (! stationNode.getNodeName().equals("station"))
102	continue;
103
104	StationBean station = new StationBean();
105
106	NodeList stationElements = stationNode.getChildNodes();
107	for (int j=0; j<stationElements.getLength(); j++) {
108	Node current = stationElements.item(j);
109
110	String content = null;
111	if (current.getFirstChild() != null)
112	content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value
113
114	String nodeName = current.getNodeName();
115
116	if (nodeName.equals("id"))
117	station.setId( Integer.parseInt(content));
118
119	if (nodeName.equals("name"))
120	station.setName(content);
121
122	if (nodeName.equals("latitude"))
123	station.setLatitude( Double.parseDouble(content) );
124
125	if (nodeName.equals("longitude"))
126	station.setLongitude( Double.parseDouble(content) );
127
128	if (nodeName.equals("calcdist"))
129	station.setDistance( (int) Double.parseDouble(content) );
130
131	if (nodeName.equals("address"))
132	station.setAddress( content );
133
134	if (nodeName.equals("regional"))
135	station.setRegional( Boolean.parseBoolean(content) );
136
137	if (nodeName.equals("strain"))
138	station.setSTrain( Boolean.parseBoolean(content) );
139
140	if (nodeName.equals("metro"))
141	station.setMetro( Boolean.parseBoolean(content) );
142
143	}
144	stations.add(station);
145	}
146	success = true;
147
148
149	} catch (Exception e) {
150	Log.e("XmlStationProvider", "lookupStations: ", e);
151	}
152	return success;
153	}
154	}