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package dk.thoerup.traininfo.provider; |
package dk.thoerup.traininfo.provider; |
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import java.util.ArrayList; |
import org.simpleframework.xml.Serializer; |
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import java.util.List; |
import org.simpleframework.xml.core.Persister; |
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import org.w3c.dom.Document; |
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import org.w3c.dom.Node; |
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import org.w3c.dom.NodeList; |
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import android.util.Log; |
import android.util.Log; |
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import dk.thoerup.traininfo.TimetableBean; |
import dk.thoerup.android.traininfo.common.TimetableBean; |
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import dk.thoerup.traininfo.util.AndroidTimeoutCache; |
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import dk.thoerup.traininfo.util.DownloadUtil; |
import dk.thoerup.traininfo.util.DownloadUtil; |
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import dk.thoerup.traininfo.util.XmlUtil; |
import dk.thoerup.traininfo.util.XmlUtil; |
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public class XmlTimetableProvider implements TimetableProvider { |
public class XmlTimetableProvider implements TimetableProvider { |
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List<TimetableBean> timetables = new ArrayList<TimetableBean>(); |
final static int CACHE_TIMEOUT = 60*1000; |
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AndroidTimeoutCache<String,TimetableBean> timetableCache = new AndroidTimeoutCache<String,TimetableBean>(CACHE_TIMEOUT); |
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@Override |
@Override |
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public List<TimetableBean> getTimetable() { |
public TimetableBean lookupTimetable(String type, String trainID) { |
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String trainNumber = extractTrainNumber(trainID); |
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String key = type + "-" + trainID; |
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TimetableBean timetables = timetableCache.get(key); |
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if (timetables == null) { |
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timetables = lookupTimetableWorker(type, trainNumber); |
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if (timetables != null) { |
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timetableCache.put(key, timetables); |
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} |
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} else { |
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Log.i("XmlTimetableProvider", "cache hit !!!"); |
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} |
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return timetables; |
return timetables; |
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} |
} |
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@Override |
public TimetableBean lookupTimetableWorker(String type, String trainNumber) { |
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public boolean lookupTimetable(String trainID) { |
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boolean success = false; |
String url = XmlUtil.SERVICE_BASE + "/TimetableServlet?train=" + trainNumber + "&type=" + type; |
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String url = XmlUtil.SERVICE_BASE + "/TimetableServlet?train=" + trainID ; |
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Log.i("url", url); |
Log.i("url", url); |
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try { |
try { |
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timetables.clear(); |
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String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1"); |
String xml = DownloadUtil.getContentString(url, 15000, "ISO-8859-1"); |
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Serializer serializer = new Persister(); |
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TimetableBean timetables = serializer.read(TimetableBean.class, xml); |
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Document doc = XmlUtil.parseXML(xml); |
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Node rootNode = doc.getDocumentElement(); // stations |
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NodeList stationList = rootNode.getChildNodes(); |
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return timetables; |
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for (int i=0; i<stationList.getLength(); i++) { |
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Node entryNode = stationList.item(i); |
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if (! entryNode.getNodeName().equals("entry")) |
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continue; |
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TimetableBean timetable = new TimetableBean(); |
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NodeList entries = entryNode.getChildNodes(); |
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for (int j=0; j<entries.getLength(); j++) { |
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Node current = entries.item(j); |
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String content = null; |
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if (current.getFirstChild() != null) |
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content = current.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value |
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String nodeName = current.getNodeName(); |
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if (nodeName.equals("station")) |
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timetable.setStation( content ); |
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if (nodeName.equals("arrival")) |
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timetable.setArrival( content ); |
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if (nodeName.equals("departure")) |
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timetable.setDeparture( content ); |
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if (nodeName.equals("current")) |
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timetable.setCurrent( Boolean.parseBoolean(content) ); |
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} |
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timetables.add(timetable); |
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} |
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success = true; |
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} catch (Exception e) { |
} catch (Exception e) { |
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Log.e("XmlStationProvider", "lookupStations: ", e); |
Log.e("XmlStationProvider", "lookupStations: ", e); |
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} |
} |
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return success; |
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return null; |
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} |
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private String extractTrainNumber (String trainID) { |
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String parts[] = trainID.split(" "); |
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if (parts.length == 2) { |
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return parts[1]; |
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} else { |
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return parts[0]; |
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} |
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} |
} |
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} |
} |