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.android.traininfo.common.DepartureEntry;
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); 
        
                
        DepartureEntry tempDeparture;
        StringBuilder builder = new StringBuilder(512);
        

        @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;
                }               
        }
        
}
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			import dk.thoerup.android.traininfo.common.DepartureEntry;
12	torben	390	import dk.thoerup.traininfo.util.AndroidTimeoutCache;
13	torben	238	import dk.thoerup.traininfo.util.DownloadUtil;
14	torben	357	import dk.thoerup.traininfo.util.XmlUtil;
15	torben	237
16	torben	1007	public class XmlDepartureProvider implements DepartureProvider {
17	torben	237
18	torben	390	final static int CACHE_TIMEOUT = 60*1000;
19	torben	391
20	torben	237
21	torben	981	AndroidTimeoutCache<String,DepartureBean> departureCache = new AndroidTimeoutCache<String,DepartureBean>(CACHE_TIMEOUT);
22	torben	390
23	torben	319
24
25	torben	981	DepartureEntry tempDeparture;
26	torben	237	StringBuilder builder = new StringBuilder(512);
27
28	torben	1007
29
30	torben	237	@Override
31	torben	1007	public DepartureBean lookupDepartures(int stationID, boolean arrival) {
32	torben	390
33	torben	835	String key = "" + stationID + ":" + arrival;
34
35	torben	1007	DepartureBean departures = departureCache.get(key);
36	torben	319
37	torben	390	if (departures == null) {
38	torben	1007	departures = lookupDeparturesWorker(stationID, arrival);
39	torben	319
40	torben	1007	if (departures != null) {
41	torben	835	departureCache.put(key, departures);
42	torben	390	}
43	torben	319
44			} else {
45			Log.i("XmlDepartureProvider", "cache hit !!!");
46			}
47
48	torben	1007	return departures;
49	torben	319	}
50
51	torben	1007	private DepartureBean lookupDeparturesWorker(int stationID, boolean arrival) {
52
53	torben	237	try
54	torben	294	{
55	torben	835	int iArrival = arrival ? 1 : 0;
56			String url = XmlUtil.SERVICE_BASE + "/DepartureServlet?format=xml&station=" + stationID + "&arrival=" + iArrival;
57	torben	294	Log.i("xmlurl",url);
58	torben	1052	String doc = DownloadUtil.getContentString(url, 30000, "ISO-8859-1");
59	torben	1066
60			Serializer serializer = new Persister();
61
62			DepartureBean departures = serializer.read(DepartureBean.class, doc);
63	torben	237
64
65	torben	1066	return departures;
66	torben	319
67	torben	1007
68	torben	237	} catch (Exception e) {
69			Log.e("XmlDepartureProvider", "looupFunction", e);
70	torben	1007	return null;
71			}
72	torben	237	}
73
74			}