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