traininfoservice/banedk/DepartureFetcher.java

package dk.thoerup.traininfoservice.banedk;


import java.net.URL;
import java.net.URLEncoder;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import net.sf.jsr107cache.Cache;
import net.sf.jsr107cache.CacheException;
import net.sf.jsr107cache.CacheManager;

import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import com.google.appengine.api.memcache.jsr107cache.GCacheFactory;

import dk.thoerup.android.traininfo.common.DepartureBean;
import dk.thoerup.android.traininfo.common.DepartureEntry;
import dk.thoerup.android.traininfo.common.StationEntry;
import dk.thoerup.circuitbreaker.CircuitBreaker;
import dk.thoerup.circuitbreaker.CircuitBreakerManager;
import dk.thoerup.traininfoservice.StationDAO;
import dk.thoerup.traininfoservice.Statistics;

public class DepartureFetcher {
        
        enum TrainType{
                STOG,
                REGIONAL
        }
        Cache cache;
        
        Logger logger = Logger.getLogger(DepartureFetcher.class.getName());     
        
        StationDAO stationDao = new StationDAO();
        
        private boolean useAzureSite;
        private int replyTimeout;
        
        Comparator<DepartureEntry> departureTimeComparator = new Comparator<DepartureEntry>() {

                @Override
                public int compare(DepartureEntry arg0, DepartureEntry arg1) {          
                                String timeStr1 = arg0.getTime().replace(":","").trim();
                                String timeStr2 = arg1.getTime().replace(":","").trim();
                                
                                int time1 = 0;
                                int time2 = 0;
                                
                                if (timeStr1.length() > 0)
                                        time1 = Integer.parseInt(timeStr1);
                                
                                if (timeStr2.length() > 0)
                                        time2 = Integer.parseInt(timeStr2);
                                
                                //work correctly when clock wraps around at midnight
                                if (Math.abs(time1-time2) < 1200) {
                                        if (time1 > time2)
                                                return 1;
                                        else
                                                return -1;
                                } else {
                                        if (time1 < time2)
                                                return 1;
                                        else
                                                return -1;

                                }               
                }
        };
        
        @SuppressWarnings("unchecked")
        public DepartureFetcher(boolean azureSite, int cacheTimeout, int replyTimeout) {
                this.replyTimeout = replyTimeout;
                useAzureSite = azureSite;

        Map props = new HashMap();
        props.put(GCacheFactory.EXPIRATION_DELTA_MILLIS, cacheTimeout);        
                
                try {
            cache = CacheManager.getInstance().getCacheFactory().createCache(props);            
        } catch (CacheException e) {
                logger.log(Level.WARNING, "error creating cache", e);
        }

        }
        
        
        public DepartureBean cachedLookupDepartures(int stationID, boolean arrival) throws Exception {
                final String key = "departure:" + stationID + ":" + arrival;
                
                DepartureBean departureBean = (DepartureBean) cache.get(key);
                
                if (departureBean == null) {
                        departureBean = lookupDepartures(stationID,arrival);
                        cache.put(key, departureBean);
                        logger.info("Departure: Cache miss " + key + " !!! "); //remove before production
                } else {
                        Statistics.getInstance().incrementDepartureCacheHits();
                        logger.info("Departure: Cache hit " + key); 
                }
                
                return departureBean;
        }
                

        public DepartureBean lookupDepartures(int stationID, boolean arrival) throws Exception {
                
                DepartureBean departureBean = new DepartureBean();
                
                StationEntry station = stationDao.getById(stationID);

                
                departureBean.stationName = station.getName();
                
                if (station.getRegional() != null) {
                        DepartureBean tempBean = lookupDepartures(station.getRegional(), TrainType.REGIONAL, arrival);
                        departureBean.entries.addAll( tempBean.entries );
                        departureBean.notifications.addAll(tempBean.notifications);
                }
                
                if (station.getStrain() != null) {
                        DepartureBean tempBean = lookupDepartures(station.getStrain(), TrainType.STOG, arrival);
                        departureBean.entries.addAll( tempBean.entries );
                        departureBean.notifications.addAll(tempBean.notifications);
                }               
                
                if (departureBean.entries.size() == 0) {
                        logger.info("No departures found for station " + stationID);
                }
                
                Collections.sort( departureBean.entries, departureTimeComparator );

                
                return departureBean;
        }
        
        public DepartureBean lookupDepartures(String stationcode, TrainType type, boolean arrival) throws Exception {
                if (useAzureSite == true) {
                        return lookupDeparturesAzureSite(stationcode, type, arrival);
                } else { 
                        return lookupDeparturesWwwSite(stationcode, type, arrival);
                }
        }
        
        private String getTypeStringAzure(TrainType type) {
                switch (type) {
                case STOG:
                        return "S-Tog";
                case REGIONAL:
                        return "Fjerntog";
                default:
                        return ""; //Can not happen
                }
        }
        
        private String getTypeStringWww(TrainType type) {
                switch (type) {
                case STOG:
                        return "S2";
                case REGIONAL:
                        return "FJRN";
                default:
                        return ""; //Can not happen
                }
        }
        
        public DepartureBean lookupDeparturesAzureSite(String stationcode, TrainType type, boolean arrival) throws Exception {
                
                DepartureBean departureBean = new DepartureBean();
                 
            
            String typeString = getTypeStringAzure(type);
            String arrivalDeparture = (arrival==false) ? "Afgang" : "Ankomst"; 
            
            stationcode = URLEncoder.encode(stationcode,"ISO-8859-1");

            String uri = "http://trafikinfo.bane.dk/Trafikinformation/AfgangAnkomst/" + arrivalDeparture + "/" + stationcode + "/" + typeString + "/UdvidetVisning";        
            
            logger.fine("URI: " + uri);     
            JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), replyTimeout);
            CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
            
            Document page = (Document) breaker.invoke(wrapper);
            
            String tableName = arrival == false ? "afgangtabel" : "ankomsttabel";
            Element table = page.getElementById(tableName);
            
            if (table != null) {
                    Elements tableRows =  table.getElementsByTag("tr");
                    
                    boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0); 
                    boolean passedTidsstreg = false;
                    
                    for (Element currentRow : tableRows) {
                        String rowClass = currentRow.attr("class");
                        
                        if (tidsstregExists == true && passedTidsstreg == false) {
                                if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) {
                                        passedTidsstreg = true;
                                } else {
                                        continue;
                                }
                        }
                        
                        if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
                                
                                Elements fields = currentRow.getElementsByTag("td");
        
                                DepartureEntry departure = new DepartureEntry();
                                
                                String time = fields.get(0).text();
                                if (time.equals(""))
                                        time = "0:00"; //Bane.dk bug work-around
                                departure.setTime(time);
                                
                                int updated = extractUpdated( fields.get(1) );
                                departure.setUpdated(updated);
                                
                                String trainNumber = fields.get(2).text();
                                if (type == TrainType.STOG) //If it is S-train we need to extract the trainNumber 
                                        trainNumber = trainNumber + " " + extractTrainNumberAzure(fields.get(2));
                                departure.setTrainNumber(trainNumber);
                                
                                String destination = fields.get(3).text();
                                departure.setDestination(destination);
                                
                                String origin = fields.get(4).text();
                                departure.setOrigin(origin);
                                
                                String location = fields.get(5).text();
                                departure.setLocation(location);
                                
                                String status = fields.get(6).text().trim();
                                departure.setStatus(status);
                                
                                String note = extractNote( fields.get(7) );
                                departure.setNote(note);
                                
                                departure.setType(typeString);
                                
                                departureBean.entries.add( departure );
                        }
                    }
            } else {
                logger.warning("No departures found for station=" + stationcode + ", type=" + type);
            }
            
            Element notifDiv = page.getElementById("station_planlagte_text");
            if (notifDiv != null) {

                Elements tables = notifDiv.getElementsByTag("table");
                for (Element tab : tables) {

                        Elements anchors = tab.getElementsByTag("a");           
                        if (anchors.size() == 2) {
                                departureBean.notifications.add(  anchors.get(1).text() );
                        }
                }
                
            }
            
            
            return departureBean;
        }
        
        
        public static String cleanText(String input) {
                //apparently JSoup translates &nbsp; characters on www.bane.dk to 0xA0 
                return input.replace((char) 0xA0, (char)0x20).trim();
        }
        
        public DepartureBean lookupDeparturesWwwSite(String stationcode, TrainType trainType, boolean arrival) throws Exception {
                
                DepartureBean departureBean = new DepartureBean();
                
                String type = getTypeStringWww(trainType);
                
                stationcode = URLEncoder.encode(stationcode, "ISO-8859-1"); 
                
                                            
            String uri = "http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode;
            logger.fine("URI:" + uri);
            

            JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), replyTimeout); 
            CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
            
            Element page = (Element) breaker.invoke(wrapper);
            
            String tableName = arrival == false ? "afgangtabel" : "ankomsttabel";
            Element table = page.getElementById(tableName);
            

            if (table != null) {
                    Elements tableRows =  table.getElementsByTag("tr");
                    
                    boolean passedTidsstreg = false;
                    boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0);
                    
                    for (Element currentRow : tableRows) {
                        String rowClass = currentRow.attr("class");
                        
                        if (tidsstregExists == true && passedTidsstreg == false) {
                                if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) {
                                        passedTidsstreg = true;
                                } else {
                                        continue;
                                }
                        }
                        
                        
                        if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
                                Elements fields = currentRow.getElementsByTag("td");
        
                                DepartureEntry departure = new DepartureEntry();
                                

                                String time = cleanText( fields.get(0).getAllElements().get(2).text() );
                                if (time.equals(""))
                                        time = "0:00"; //Bane.dk bug work-around
                                departure.setTime(time);
                                
                                int updated = extractUpdated( fields.get(1) );
                                departure.setUpdated(updated);
                                
                                String trainNumber = cleanText( fields.get(2).text() );
                                if (type.equalsIgnoreCase("S2")) //If it is S-train we need to extract the trainNumber 
                                        trainNumber = trainNumber + " " + extractTrainNumberWww(fields.get(2));
                                departure.setTrainNumber(trainNumber);
                                
                                String destination = cleanText( fields.get(3).text() );
                                departure.setDestination(destination);
                                
                                String origin = cleanText( fields.get(4).text() );
                                departure.setOrigin(origin);
                                
                                String location = cleanText( fields.get(5).text() );
                                departure.setLocation(location);
                                
                                String status = cleanText( fields.get(6).text() );
                                departure.setStatus(status);
                                
                                String note = cleanText( extractNote( fields.get(7) ) );
                                departure.setNote(note);
                                
                                departure.setType(type);
                                
                                departureBean.entries.add(departure);
                                
                                
                        }
                    }
            } else {
                logger.warning("No departures found for station=" + stationcode + ", type=" + type);
            }
            
            
            return departureBean;
        }
                
        
        private int extractUpdated(Element updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif" 
                int updated = -1;
                
                Elements updatedImgs = updatedTd.getElementsByTag("img");
                String updatedStr = updatedImgs.get(0).attr("src");
                
                if (updatedStr != null) {
                        for (int i=0; i<updatedStr.length(); i++) {
                                char c = updatedStr.charAt(i);
                                if ( Character.isDigit(c))  {
                                        updated = Character.digit(c, 10);
                                        break;
                                }
                        }
                }               
                return updated;
        }
        
        private String extractNote(Element noteTd) {
                String note = noteTd.text().trim();
                
                
                Elements elems = noteTd.getElementsByClass("bemtype");
                if (elems.size() > 0 && note.charAt(note.length()-1) == 'i')
                        note = note.substring(0,note.length() -1 );

                return note.trim();
        }
        
        private String extractTrainNumberAzure(Element trainTd) {
                Element anchorElement = trainTd.getElementsByTag("a").get(0);
                String href = anchorElement.attr("href");
                
                int pos = href.lastIndexOf('/');
                String number = href.substring(pos+1);
                
                return number;
        }
        
        private String extractTrainNumberWww(Element trainTd) {
                String number = "";
                Element anchorElement = trainTd.getElementsByTag("a").get(0);
                String href = anchorElement.attr("href");
                String argstring = href.substring( href.indexOf('?') + 1);
                
                String args[] = argstring.split("&");
                for (String arg : args) {
                        String pair[] = arg.split("="); // Key=pair[0], Value=pair[1]
                        
                        if (pair[0].equalsIgnoreCase("TogNr"))
                                number = pair[1];
                }
                
                
                return number;
        }

        
        //test
        /*
        public static void main(String args[]) throws Exception {
                DepartureFetcher f = new DepartureFetcher();
                List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN");
                for(DepartureBean d : deps) {
                        System.out.println( d.getTime() + ";" + d.getUpdated() + ";" + d.getTrainNumber() + ";" + 
                                                d.getDestination() + ";" + d.getOrigin() + ";" + d.getLocation() + ";" + d.getStatus() + ";" + d.getNote()   );
                }
                
                System.out.println("--------------------------");
        }*/
}
1	package dk.thoerup.traininfoservice.banedk;
2
3
4	import java.net.URL;
5	import java.net.URLEncoder;
6	import java.util.Collections;
7	import java.util.Comparator;
8	import java.util.HashMap;
9	import java.util.Map;
10	import java.util.logging.Level;
11	import java.util.logging.Logger;
12
13	import net.sf.jsr107cache.Cache;
14	import net.sf.jsr107cache.CacheException;
15	import net.sf.jsr107cache.CacheManager;
16
17	import org.jsoup.nodes.Document;
18	import org.jsoup.nodes.Element;
19	import org.jsoup.select.Elements;
20
21	import com.google.appengine.api.memcache.jsr107cache.GCacheFactory;
22
23	import dk.thoerup.android.traininfo.common.DepartureBean;
24	import dk.thoerup.android.traininfo.common.DepartureEntry;
25	import dk.thoerup.android.traininfo.common.StationEntry;
26	import dk.thoerup.circuitbreaker.CircuitBreaker;
27	import dk.thoerup.circuitbreaker.CircuitBreakerManager;
28	import dk.thoerup.traininfoservice.StationDAO;
29	import dk.thoerup.traininfoservice.Statistics;
30
31	public class DepartureFetcher {
32
33	enum TrainType{
34	STOG,
35	REGIONAL
36	}
37	Cache cache;
38
39	Logger logger = Logger.getLogger(DepartureFetcher.class.getName());
40
41	StationDAO stationDao = new StationDAO();
42
43	private boolean useAzureSite;
44	private int replyTimeout;
45
46	Comparator<DepartureEntry> departureTimeComparator = new Comparator<DepartureEntry>() {
47
48	@Override
49	public int compare(DepartureEntry arg0, DepartureEntry arg1) {
50	String timeStr1 = arg0.getTime().replace(":","").trim();
51	String timeStr2 = arg1.getTime().replace(":","").trim();
52
53	int time1 = 0;
54	int time2 = 0;
55
56	if (timeStr1.length() > 0)
57	time1 = Integer.parseInt(timeStr1);
58
59	if (timeStr2.length() > 0)
60	time2 = Integer.parseInt(timeStr2);
61
62	//work correctly when clock wraps around at midnight
63	if (Math.abs(time1-time2) < 1200) {
64	if (time1 > time2)
65	return 1;
66	else
67	return -1;
68	} else {
69	if (time1 < time2)
70	return 1;
71	else
72	return -1;
73
74	}
75	}
76	};
77
78	@SuppressWarnings("unchecked")
79	public DepartureFetcher(boolean azureSite, int cacheTimeout, int replyTimeout) {
80	this.replyTimeout = replyTimeout;
81	useAzureSite = azureSite;
82
83	Map props = new HashMap();
84	props.put(GCacheFactory.EXPIRATION_DELTA_MILLIS, cacheTimeout);
85
86	try {
87	cache = CacheManager.getInstance().getCacheFactory().createCache(props);
88	} catch (CacheException e) {
89	logger.log(Level.WARNING, "error creating cache", e);
90	}
91
92	}
93
94
95
96
97	public DepartureBean cachedLookupDepartures(int stationID, boolean arrival) throws Exception {
98	final String key = "departure:" + stationID + ":" + arrival;
99
100	DepartureBean departureBean = (DepartureBean) cache.get(key);
101
102	if (departureBean == null) {
103	departureBean = lookupDepartures(stationID,arrival);
104	cache.put(key, departureBean);
105	logger.info("Departure: Cache miss " + key + " !!! "); //remove before production
106	} else {
107	Statistics.getInstance().incrementDepartureCacheHits();
108	logger.info("Departure: Cache hit " + key);
109	}
110
111	return departureBean;
112	}
113
114
115	public DepartureBean lookupDepartures(int stationID, boolean arrival) throws Exception {
116
117	DepartureBean departureBean = new DepartureBean();
118
119	StationEntry station = stationDao.getById(stationID);
120
121
122	departureBean.stationName = station.getName();
123
124	if (station.getRegional() != null) {
125	DepartureBean tempBean = lookupDepartures(station.getRegional(), TrainType.REGIONAL, arrival);
126	departureBean.entries.addAll( tempBean.entries );
127	departureBean.notifications.addAll(tempBean.notifications);
128	}
129
130	if (station.getStrain() != null) {
131	DepartureBean tempBean = lookupDepartures(station.getStrain(), TrainType.STOG, arrival);
132	departureBean.entries.addAll( tempBean.entries );
133	departureBean.notifications.addAll(tempBean.notifications);
134	}
135
136	if (departureBean.entries.size() == 0) {
137	logger.info("No departures found for station " + stationID);
138	}
139
140	Collections.sort( departureBean.entries, departureTimeComparator );
141
142
143	return departureBean;
144	}
145
146	public DepartureBean lookupDepartures(String stationcode, TrainType type, boolean arrival) throws Exception {
147	if (useAzureSite == true) {
148	return lookupDeparturesAzureSite(stationcode, type, arrival);
149	} else {
150	return lookupDeparturesWwwSite(stationcode, type, arrival);
151	}
152	}
153
154	private String getTypeStringAzure(TrainType type) {
155	switch (type) {
156	case STOG:
157	return "S-Tog";
158	case REGIONAL:
159	return "Fjerntog";
160	default:
161	return ""; //Can not happen
162	}
163	}
164
165	private String getTypeStringWww(TrainType type) {
166	switch (type) {
167	case STOG:
168	return "S2";
169	case REGIONAL:
170	return "FJRN";
171	default:
172	return ""; //Can not happen
173	}
174	}
175
176	public DepartureBean lookupDeparturesAzureSite(String stationcode, TrainType type, boolean arrival) throws Exception {
177
178	DepartureBean departureBean = new DepartureBean();
179
180
181	String typeString = getTypeStringAzure(type);
182	String arrivalDeparture = (arrival==false) ? "Afgang" : "Ankomst";
183
184	stationcode = URLEncoder.encode(stationcode,"ISO-8859-1");
185
186	String uri = "http://trafikinfo.bane.dk/Trafikinformation/AfgangAnkomst/" + arrivalDeparture + "/" + stationcode + "/" + typeString + "/UdvidetVisning";
187
188	logger.fine("URI: " + uri);
189	JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), replyTimeout);
190	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
191
192	Document page = (Document) breaker.invoke(wrapper);
193
194	String tableName = arrival == false ? "afgangtabel" : "ankomsttabel";
195	Element table = page.getElementById(tableName);
196
197	if (table != null) {
198	Elements tableRows = table.getElementsByTag("tr");
199
200	boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0);
201	boolean passedTidsstreg = false;
202
203	for (Element currentRow : tableRows) {
204	String rowClass = currentRow.attr("class");
205
206	if (tidsstregExists == true && passedTidsstreg == false) {
207	if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) {
208	passedTidsstreg = true;
209	} else {
210	continue;
211	}
212	}
213
214	if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
215
216	Elements fields = currentRow.getElementsByTag("td");
217
218	DepartureEntry departure = new DepartureEntry();
219
220	String time = fields.get(0).text();
221	if (time.equals(""))
222	time = "0:00"; //Bane.dk bug work-around
223	departure.setTime(time);
224
225	int updated = extractUpdated( fields.get(1) );
226	departure.setUpdated(updated);
227
228	String trainNumber = fields.get(2).text();
229	if (type == TrainType.STOG) //If it is S-train we need to extract the trainNumber
230	trainNumber = trainNumber + " " + extractTrainNumberAzure(fields.get(2));
231	departure.setTrainNumber(trainNumber);
232
233	String destination = fields.get(3).text();
234	departure.setDestination(destination);
235
236	String origin = fields.get(4).text();
237	departure.setOrigin(origin);
238
239	String location = fields.get(5).text();
240	departure.setLocation(location);
241
242	String status = fields.get(6).text().trim();
243	departure.setStatus(status);
244
245	String note = extractNote( fields.get(7) );
246	departure.setNote(note);
247
248	departure.setType(typeString);
249
250	departureBean.entries.add( departure );
251	}
252	}
253	} else {
254	logger.warning("No departures found for station=" + stationcode + ", type=" + type);
255	}
256
257	Element notifDiv = page.getElementById("station_planlagte_text");
258	if (notifDiv != null) {
259
260	Elements tables = notifDiv.getElementsByTag("table");
261	for (Element tab : tables) {
262
263	Elements anchors = tab.getElementsByTag("a");
264	if (anchors.size() == 2) {
265	departureBean.notifications.add( anchors.get(1).text() );
266	}
267	}
268
269	}
270
271
272	return departureBean;
273	}
274
275
276
277	public static String cleanText(String input) {
278	//apparently JSoup translates   characters on www.bane.dk to 0xA0
279	return input.replace((char) 0xA0, (char)0x20).trim();
280	}
281
282	public DepartureBean lookupDeparturesWwwSite(String stationcode, TrainType trainType, boolean arrival) throws Exception {
283
284	DepartureBean departureBean = new DepartureBean();
285
286	String type = getTypeStringWww(trainType);
287
288	stationcode = URLEncoder.encode(stationcode, "ISO-8859-1");
289
290
291	String uri = "http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode;
292	logger.fine("URI:" + uri);
293
294
295	JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), replyTimeout);
296	CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
297
298	Element page = (Element) breaker.invoke(wrapper);
299
300	String tableName = arrival == false ? "afgangtabel" : "ankomsttabel";
301	Element table = page.getElementById(tableName);
302
303
304
305	if (table != null) {
306	Elements tableRows = table.getElementsByTag("tr");
307
308	boolean passedTidsstreg = false;
309	boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0);
310
311	for (Element currentRow : tableRows) {
312	String rowClass = currentRow.attr("class");
313
314	if (tidsstregExists == true && passedTidsstreg == false) {
315	if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) {
316	passedTidsstreg = true;
317	} else {
318	continue;
319	}
320	}
321
322
323	if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
324	Elements fields = currentRow.getElementsByTag("td");
325
326	DepartureEntry departure = new DepartureEntry();
327
328
329
330	String time = cleanText( fields.get(0).getAllElements().get(2).text() );
331	if (time.equals(""))
332	time = "0:00"; //Bane.dk bug work-around
333	departure.setTime(time);
334
335	int updated = extractUpdated( fields.get(1) );
336	departure.setUpdated(updated);
337
338	String trainNumber = cleanText( fields.get(2).text() );
339	if (type.equalsIgnoreCase("S2")) //If it is S-train we need to extract the trainNumber
340	trainNumber = trainNumber + " " + extractTrainNumberWww(fields.get(2));
341	departure.setTrainNumber(trainNumber);
342
343	String destination = cleanText( fields.get(3).text() );
344	departure.setDestination(destination);
345
346	String origin = cleanText( fields.get(4).text() );
347	departure.setOrigin(origin);
348
349	String location = cleanText( fields.get(5).text() );
350	departure.setLocation(location);
351
352	String status = cleanText( fields.get(6).text() );
353	departure.setStatus(status);
354
355	String note = cleanText( extractNote( fields.get(7) ) );
356	departure.setNote(note);
357
358	departure.setType(type);
359
360	departureBean.entries.add(departure);
361
362
363	}
364	}
365	} else {
366	logger.warning("No departures found for station=" + stationcode + ", type=" + type);
367	}
368
369
370	return departureBean;
371	}
372
373
374	private int extractUpdated(Element updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif"
375	int updated = -1;
376
377	Elements updatedImgs = updatedTd.getElementsByTag("img");
378	String updatedStr = updatedImgs.get(0).attr("src");
379
380	if (updatedStr != null) {
381	for (int i=0; i<updatedStr.length(); i++) {
382	char c = updatedStr.charAt(i);
383	if ( Character.isDigit(c)) {
384	updated = Character.digit(c, 10);
385	break;
386	}
387	}
388	}
389	return updated;
390	}
391
392	private String extractNote(Element noteTd) {
393	String note = noteTd.text().trim();
394
395
396	Elements elems = noteTd.getElementsByClass("bemtype");
397	if (elems.size() > 0 && note.charAt(note.length()-1) == 'i')
398	note = note.substring(0,note.length() -1 );
399
400	return note.trim();
401	}
402
403	private String extractTrainNumberAzure(Element trainTd) {
404	Element anchorElement = trainTd.getElementsByTag("a").get(0);
405	String href = anchorElement.attr("href");
406
407	int pos = href.lastIndexOf('/');
408	String number = href.substring(pos+1);
409
410	return number;
411	}
412
413	private String extractTrainNumberWww(Element trainTd) {
414	String number = "";
415	Element anchorElement = trainTd.getElementsByTag("a").get(0);
416	String href = anchorElement.attr("href");
417	String argstring = href.substring( href.indexOf('?') + 1);
418
419	String args[] = argstring.split("&");
420	for (String arg : args) {
421	String pair[] = arg.split("="); // Key=pair[0], Value=pair[1]
422
423	if (pair[0].equalsIgnoreCase("TogNr"))
424	number = pair[1];
425	}
426
427
428	return number;
429	}
430
431
432	//test
433	/*
434	public static void main(String args[]) throws Exception {
435	DepartureFetcher f = new DepartureFetcher();
436	List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN");
437	for(DepartureBean d : deps) {
438	System.out.println( d.getTime() + ";" + d.getUpdated() + ";" + d.getTrainNumber() + ";" +
439	d.getDestination() + ";" + d.getOrigin() + ";" + d.getLocation() + ";" + d.getStatus() + ";" + d.getNote() );
440	}
441
442	System.out.println("--------------------------");
443	}*/
444	}