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package dk.thoerup.traininfo.provider;
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import org.simpleframework.xml.Serializer;
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import org.simpleframework.xml.core.Persister;
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import android.util.Log;
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import dk.thoerup.android.traininfo.common.DepartureBean;
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import dk.thoerup.traininfo.util.AndroidTimeoutCache;
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import dk.thoerup.traininfo.util.DownloadUtil;
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import dk.thoerup.traininfo.util.XmlUtil;
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public class XmlDepartureProvider implements DepartureProvider {
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final static int CACHE_TIMEOUT = 60*1000;
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AndroidTimeoutCache<String,DepartureBean> departureCache = new AndroidTimeoutCache<String,DepartureBean>(CACHE_TIMEOUT);
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@Override
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public DepartureBean lookupDepartures(int stationID, boolean arrival,String type) {
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String key = "" + stationID + ":" + arrival + ":" + type;
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DepartureBean departures = departureCache.get(key);
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if (departures == null) {
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departures = lookupDeparturesWorker(stationID, arrival, type);
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if (departures != null) {
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departureCache.put(key, departures);
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}
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} else {
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Log.i("XmlDepartureProvider", "cache hit !!!");
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}
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return departures;
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}
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private DepartureBean lookupDeparturesWorker(int stationID, boolean arrival, String type) {
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try
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{
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int iArrival = arrival ? 1 : 0;
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String url = XmlUtil.SERVICE_BASE + "/DepartureServlet?format=xml&station=" + stationID + "&arrival=" + iArrival + "&type=" + type;
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Log.i("xmlurl",url);
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String doc = DownloadUtil.getContentString(url, 30000, "ISO-8859-1");
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Serializer serializer = new Persister();
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DepartureBean departures = serializer.read(DepartureBean.class, doc);
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return departures;
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} catch (Exception e) {
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Log.e("XmlDepartureProvider", "looupFunction", e);
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return null;
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}
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}
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@Override
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public void purgeOldEntries() {
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departureCache.purgeOldEntries();
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}
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}
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