traininfo/provider/XmlDepartureProvider.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.DepartureBean;
import dk.thoerup.traininfo.util.AndroidTimeoutCache;
import dk.thoerup.traininfo.util.DownloadUtil;
import dk.thoerup.traininfo.util.XmlUtil;

public class XmlDepartureProvider implements DepartureProvider {

        final static int CACHE_TIMEOUT = 60*1000;
                
        
        AndroidTimeoutCache<String,DepartureBean> departureCache = new AndroidTimeoutCache<String,DepartureBean>(CACHE_TIMEOUT); 
        
                
        @Override
        public DepartureBean lookupDepartures(int stationID, boolean arrival) {         
                
                String key = "" + stationID + ":" + arrival;
                
                DepartureBean departures = departureCache.get(key);
        
                if (departures == null) {                       
                        departures = lookupDeparturesWorker(stationID, arrival);
                        
                        if (departures != null) {                       
                                departureCache.put(key, departures);
                        }
                        
                } else {
                        Log.i("XmlDepartureProvider", "cache hit !!!");
                }               
                
                return departures;
        }
        
        private DepartureBean lookupDeparturesWorker(int stationID, boolean arrival) {

                try
                {       
                        int iArrival = arrival ? 1 : 0;
                        String url = XmlUtil.SERVICE_BASE + "/DepartureServlet?format=xml&station=" + stationID + "&arrival=" + iArrival;
                        Log.i("xmlurl",url);
                        String doc =  DownloadUtil.getContentString(url, 30000, "ISO-8859-1");

                        Serializer serializer = new Persister();

                        DepartureBean departures = serializer.read(DepartureBean.class, doc);
                        
                        
                        return departures;
                        
                        
                } catch (Exception e) {
                        Log.e("XmlDepartureProvider", "looupFunction", e);
                        return null;
                }               
        }

        @Override
        public void purgeOldEntries() {
                departureCache.purgeOldEntries();               
        }
        
}
1	torben	237	package dk.thoerup.traininfo.provider;
2
3
4
5	torben	1066	import org.simpleframework.xml.Serializer;
6			import org.simpleframework.xml.core.Persister;
7	torben	237
8	torben	1066
9	torben	237	import android.util.Log;
10	torben	1066	import dk.thoerup.android.traininfo.common.DepartureBean;
11	torben	390	import dk.thoerup.traininfo.util.AndroidTimeoutCache;
12	torben	238	import dk.thoerup.traininfo.util.DownloadUtil;
13	torben	357	import dk.thoerup.traininfo.util.XmlUtil;
14	torben	237
15	torben	1007	public class XmlDepartureProvider implements DepartureProvider {
16	torben	237
17	torben	390	final static int CACHE_TIMEOUT = 60*1000;
18	torben	391
19	torben	237
20	torben	981	AndroidTimeoutCache<String,DepartureBean> departureCache = new AndroidTimeoutCache<String,DepartureBean>(CACHE_TIMEOUT);
21	torben	390
22	torben	319
23
24	torben	237	@Override
25	torben	1007	public DepartureBean lookupDepartures(int stationID, boolean arrival) {
26	torben	390
27	torben	835	String key = "" + stationID + ":" + arrival;
28
29	torben	1007	DepartureBean departures = departureCache.get(key);
30	torben	319
31	torben	390	if (departures == null) {
32	torben	1007	departures = lookupDeparturesWorker(stationID, arrival);
33	torben	319
34	torben	1007	if (departures != null) {
35	torben	835	departureCache.put(key, departures);
36	torben	390	}
37	torben	319
38			} else {
39			Log.i("XmlDepartureProvider", "cache hit !!!");
40			}
41
42	torben	1007	return departures;
43	torben	319	}
44
45	torben	1007	private DepartureBean lookupDeparturesWorker(int stationID, boolean arrival) {
46
47	torben	237	try
48	torben	294	{
49	torben	835	int iArrival = arrival ? 1 : 0;
50			String url = XmlUtil.SERVICE_BASE + "/DepartureServlet?format=xml&station=" + stationID + "&arrival=" + iArrival;
51	torben	294	Log.i("xmlurl",url);
52	torben	1052	String doc = DownloadUtil.getContentString(url, 30000, "ISO-8859-1");
53	torben	1066
54			Serializer serializer = new Persister();
55
56			DepartureBean departures = serializer.read(DepartureBean.class, doc);
57	torben	237
58
59	torben	1066	return departures;
60	torben	319
61	torben	1007
62	torben	237	} catch (Exception e) {
63			Log.e("XmlDepartureProvider", "looupFunction", e);
64	torben	1007	return null;
65			}
66	torben	237	}
67	torben	1160
68			@Override
69			public void purgeOldEntries() {
70			departureCache.purgeOldEntries();
71			}
72	torben	237
73			}