traininfo/provider/XmlTimetableProvider.java

package dk.thoerup.traininfo.provider;

import org.simpleframework.xml.Serializer;
import org.simpleframework.xml.core.Persister;

import android.util.Log;
import dk.thoerup.android.traininfo.common.TimetableBean;
import dk.thoerup.traininfo.util.AndroidTimeoutCache;
import dk.thoerup.traininfo.util.DownloadUtil;
import dk.thoerup.traininfo.util.XmlUtil;

public class XmlTimetableProvider implements TimetableProvider {
        
        final static int CACHE_TIMEOUT = 60*1000;

        AndroidTimeoutCache<String,TimetableBean> timetableCache = new AndroidTimeoutCache<String,TimetableBean>(CACHE_TIMEOUT);        

        @Override
        public TimetableBean lookupTimetable(String type, String trainID) {
                
                String trainNumber = extractTrainNumber(trainID);
                
                String key = type + "-" + trainID;
                TimetableBean timetables = timetableCache.get(key);
        
                if (timetables == null) {                       
                        timetables = lookupTimetableWorker(type, trainNumber);
                        
                        if (timetables != null) {                       
                                timetableCache.put(key, timetables);
                        }
                        
                } else {
                        Log.i("XmlTimetableProvider", "cache hit !!!");
                }               
                
                return timetables;
        }
        

        public TimetableBean lookupTimetableWorker(String type, String trainNumber) {

                String url = XmlUtil.SERVICE_BASE + "/TimetableServlet?train=" + trainNumber + "&type=" + type;
                Log.i("url", url);
                try {
                        
                        String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
                        
                        Serializer serializer = new Persister();

                        TimetableBean timetables = serializer.read(TimetableBean.class, xml);
                        
                        
                        return timetables;
                        
                        
                } catch (Exception e) {
                        Log.e("XmlStationProvider", "lookupStations: ", e);
                }

                return null;
        }
        
        private String extractTrainNumber (String trainID) {

                String parts[]  = trainID.split(" ");
                if (parts.length == 2) {
                        return parts[1];
                } else {
                        return parts[0];
                }
        }

}
1	package dk.thoerup.traininfo.provider;
2
3	import org.simpleframework.xml.Serializer;
4	import org.simpleframework.xml.core.Persister;
5
6	import android.util.Log;
7	import dk.thoerup.android.traininfo.common.TimetableBean;
8	import dk.thoerup.traininfo.util.AndroidTimeoutCache;
9	import dk.thoerup.traininfo.util.DownloadUtil;
10	import dk.thoerup.traininfo.util.XmlUtil;
11
12	public class XmlTimetableProvider implements TimetableProvider {
13
14	final static int CACHE_TIMEOUT = 60*1000;
15
16	AndroidTimeoutCache<String,TimetableBean> timetableCache = new AndroidTimeoutCache<String,TimetableBean>(CACHE_TIMEOUT);
17
18	@Override
19	public TimetableBean lookupTimetable(String type, String trainID) {
20
21	String trainNumber = extractTrainNumber(trainID);
22
23	String key = type + "-" + trainID;
24	TimetableBean timetables = timetableCache.get(key);
25
26	if (timetables == null) {
27	timetables = lookupTimetableWorker(type, trainNumber);
28
29	if (timetables != null) {
30	timetableCache.put(key, timetables);
31	}
32
33	} else {
34	Log.i("XmlTimetableProvider", "cache hit !!!");
35	}
36
37	return timetables;
38	}
39
40
41	public TimetableBean lookupTimetableWorker(String type, String trainNumber) {
42
43	String url = XmlUtil.SERVICE_BASE + "/TimetableServlet?train=" + trainNumber + "&type=" + type;
44	Log.i("url", url);
45	try {
46
47	String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
48
49	Serializer serializer = new Persister();
50
51	TimetableBean timetables = serializer.read(TimetableBean.class, xml);
52
53
54	return timetables;
55
56
57	} catch (Exception e) {
58	Log.e("XmlStationProvider", "lookupStations: ", e);
59	}
60
61	return null;
62	}
63
64	private String extractTrainNumber (String trainID) {
65
66	String parts[] = trainID.split(" ");
67	if (parts.length == 2) {
68	return parts[1];
69	} else {
70	return parts[0];
71	}
72	}
73
74	}