--- android/TrainInfo/src/dk/thoerup/traininfo/provider/XmlStationProvider.java	2010/01/26 20:28:13	551
+++ android/TrainInfo/src/dk/thoerup/traininfo/provider/XmlStationProvider.java	2010/09/08 08:45:18	1031
@@ -12,29 +12,37 @@
 import android.location.Location;
 import android.util.Log;
 import dk.thoerup.traininfo.StationBean;
+import dk.thoerup.traininfo.util.AndroidTimeoutCache;
 import dk.thoerup.traininfo.util.DownloadUtil;
 import dk.thoerup.traininfo.util.XmlUtil;
 
 public class XmlStationProvider implements StationProvider {
-
-	List<StationBean> stations = new ArrayList<StationBean>();	
 	
+	final static int CACHE_TIMEOUT = 300*1000;
+
+	//List<StationBean> stations = new ArrayList<StationBean>();	
+	AndroidTimeoutCache<String, List<StationBean>> stationCache = new AndroidTimeoutCache<String, List<StationBean>>(CACHE_TIMEOUT);
 	
-	@Override
-	public List<StationBean> getStations() {
-		return stations;
-	}
 
+	double roundToPlaces(double value, int places) {
+		double pow = Math.pow(10, places);
+		double temp = Math.round( value*pow );
+		
+		return temp / pow;
+	}
 
 	@Override
-	public boolean lookupStations(Location location) {
-		String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + location.getLatitude() + "&longitude=" + location.getLongitude();
+	public List<StationBean> lookupStations(Location location) {
+		double lat = roundToPlaces(location.getLatitude(), 4);
+		double lng = roundToPlaces(location.getLongitude(), 4);
+		
+		String url = XmlUtil.SERVICE_BASE + "/LocateStations?latitude=" + lat + "&longitude=" + lng;
 		Log.i("url", url);
 		return lookupStationsWorker(url);
 	}
 	
 	@Override
-	public boolean lookupStationsByName(String name) {		
+	public List<StationBean> lookupStationsByName(String name) {		
 		
 	//	String url = XmlUtil.SERVICE_BASE + "/LocateStations?name=" + Uri.encode(name);
 		String url = "";
@@ -51,20 +59,36 @@
 	
 	
 	@Override
-	public boolean lookupStationsByIds(String ids) {
+	public List<StationBean> lookupStationsByIds(String ids) {
 		String url = "";
 		url = XmlUtil.SERVICE_BASE + "/LocateStations?list=" + ids;
 		
 		Log.i("url", url);
 		return lookupStationsWorker(url);
 	}
+	
+	public List<StationBean> lookupStationsWorker(String url) {
+		
+		List<StationBean> tmpStations = stationCache.get(url);
+		
+		if (tmpStations != null) {
+			Log.i("lookupStations", "cache hit " + url);
+		} else {
+			tmpStations = fetchStations(url);
+			
+			if (tmpStations != null) {
+				stationCache.put(url, tmpStations);
+			}
+		}
+		
+		return tmpStations;
+	}
 
 
-	public boolean lookupStationsWorker(String url) {
-		boolean success = false;
+	public List<StationBean> fetchStations(String url) {
 
 		try {
-			stations.clear();
+			List<StationBean> stations = new ArrayList<StationBean>();
 			
 			String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1");
 			
@@ -104,9 +128,6 @@
 					if (nodeName.equals("longitude"))
 						station.setLongitude( Double.parseDouble(content) );
 					
-					if (nodeName.equals("stationcode"))
-						station.setCode(content);
-					
 					if (nodeName.equals("calcdist"))
 						station.setDistance( (int) Double.parseDouble(content) );
 					
@@ -125,12 +146,12 @@
 				}
 				stations.add(station);				
 			}
-			success = true;
+			return stations;
 			
 			
 		} catch (Exception e) {
 			Log.e("XmlStationProvider", "lookupStations: ", e);
+			return null;
 		}
-		return success;
 	}
 }