traininfo/provider/XmlMetroProvider.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.MetroBean;
import dk.thoerup.traininfo.util.AndroidTimeoutCache;
import dk.thoerup.traininfo.util.DownloadUtil;
import dk.thoerup.traininfo.util.XmlUtil;

public class XmlMetroProvider implements MetroProvider {
        
        final int CACHE_TIMEOUT = 60000;

        AndroidTimeoutCache<Integer,MetroBean> metroCache = new AndroidTimeoutCache<Integer,MetroBean>(CACHE_TIMEOUT);
        

        @Override
        public MetroBean lookupMetroInfo(int stationID) {
                
                MetroBean metro = metroCache.get(stationID);
        
                if (metro == null) {                    
                        metro = lookupMetroWorker(stationID);
                        
                        if (metro != null) {                    
                                metroCache.put(stationID, metro);
                        }
                        
                } else {
                        Log.i("XmlDepartureProvider", "cache hit !!!");
                }               
                
                return metro;
        }
        
        
        private MetroBean lookupMetroWorker(int stationID) {

                try
                {       
                        String url = XmlUtil.SERVICE_BASE + "/MetroServlet?station=" + stationID;
                        Log.i("xmlurl",url);
                        String doc =  DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
                        
                        Serializer serializer = new Persister();

                        MetroBean metro = serializer.read(MetroBean.class, doc);
                        
                        return metro;

                                                
                } catch (Exception e) {
                        Log.e("XmlMetroProvider", "lookupFunction", e);
                        return null;
                }               
        }
                
        @Override
        public void purgeOldEntries() {
                metroCache.purgeOldEntries();           
        }
}
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.MetroBean;
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 XmlMetroProvider implements MetroProvider {
13
14	final int CACHE_TIMEOUT = 60000;
15
16	AndroidTimeoutCache<Integer,MetroBean> metroCache = new AndroidTimeoutCache<Integer,MetroBean>(CACHE_TIMEOUT);
17
18
19	@Override
20	public MetroBean lookupMetroInfo(int stationID) {
21
22	MetroBean metro = metroCache.get(stationID);
23
24	if (metro == null) {
25	metro = lookupMetroWorker(stationID);
26
27	if (metro != null) {
28	metroCache.put(stationID, metro);
29	}
30
31	} else {
32	Log.i("XmlDepartureProvider", "cache hit !!!");
33	}
34
35	return metro;
36	}
37
38
39	private MetroBean lookupMetroWorker(int stationID) {
40
41	try
42	{
43	String url = XmlUtil.SERVICE_BASE + "/MetroServlet?station=" + stationID;
44	Log.i("xmlurl",url);
45	String doc = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
46
47	Serializer serializer = new Persister();
48
49	MetroBean metro = serializer.read(MetroBean.class, doc);
50
51	return metro;
52
53
54	} catch (Exception e) {
55	Log.e("XmlMetroProvider", "lookupFunction", e);
56	return null;
57	}
58	}
59
60	@Override
61	public void purgeOldEntries() {
62	metroCache.purgeOldEntries();
63	}
64	}