/[projects]/android/TrainInfoService/src/dk/thoerup/traininfoservice/banedk/DepartureFetcher.java
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Contents of /android/TrainInfoService/src/dk/thoerup/traininfoservice/banedk/DepartureFetcher.java

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Revision 1332 - (show annotations) (download)
Wed Apr 20 06:20:27 2011 UTC (13 years ago) by torben
File size: 16392 byte(s)
origin field must not be empty
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.Map;
8 import java.util.logging.Logger;
9
10 import org.jsoup.nodes.Document;
11 import org.jsoup.nodes.Element;
12 import org.jsoup.select.Elements;
13
14 import dk.thoerup.android.traininfo.common.DepartureBean;
15 import dk.thoerup.android.traininfo.common.DepartureEntry;
16 import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
17 import dk.thoerup.circuitbreaker.CircuitBreaker;
18 import dk.thoerup.circuitbreaker.CircuitBreakerManager;
19 import dk.thoerup.traininfoservice.Statistics;
20 import dk.thoerup.traininfoservice.TraininfoSettings;
21 import dk.thoerup.traininfoservice.db.StationDAO;
22
23 public class DepartureFetcher {
24
25 enum TrainType{
26 STOG,
27 REGIONAL
28 }
29
30 enum FetchTrainType {
31 STOG,
32 REGIONAL,
33 BOTH
34 }
35
36 Logger logger = Logger.getLogger(DepartureFetcher.class.getName());
37
38 Map<String, DepartureBean> cache;
39
40 StationDAO stationDao = new StationDAO();
41
42
43 private TraininfoSettings settings;
44
45 public DepartureFetcher(TraininfoSettings settings) {
46 this.settings = settings;
47 cache = new TimeoutMap<String,DepartureBean>( settings.getCacheTimeout() );
48 }
49
50
51
52
53 public DepartureBean cachedLookupDepartures(int stationID, boolean arrival, FetchTrainType type) throws Exception {
54
55 final String key = "" + stationID + ":" + arrival + ":" + type.toString();
56
57 DepartureBean departureBean = cache.get(key);
58
59
60 if (departureBean == null) {
61 departureBean = lookupDepartures(stationID, arrival, type);
62 cache.put(key, departureBean);
63 } else {
64 Statistics.getInstance().incrementDepartureCacheHits();
65 logger.info("Departure: Cache hit " + key); //remove before production
66 }
67 return departureBean;
68 }
69
70
71 public DepartureBean lookupDepartures(int stationID, boolean arrival, FetchTrainType type) throws Exception {
72
73 DepartureBean departureBean = new DepartureBean();
74
75 StationEntry station = stationDao.getById(stationID);
76
77 departureBean.stationName = station.getName();
78
79 if (station.getRegional() != null && (type == FetchTrainType.REGIONAL||type == FetchTrainType.BOTH) ) {
80 DepartureBean tempBean = lookupDepartures(station.getRegional(), TrainType.REGIONAL, arrival);
81 departureBean.entries.addAll( tempBean.entries );
82 departureBean.notifications.addAll(tempBean.notifications);
83 }
84
85 if (station.getStrain() != null && (type == FetchTrainType.STOG||type == FetchTrainType.BOTH)) {
86 DepartureBean tempBean = lookupDepartures(station.getStrain(), TrainType.STOG, arrival);
87 departureBean.entries.addAll( tempBean.entries );
88 departureBean.notifications.addAll(tempBean.notifications);
89 }
90
91 if (departureBean.entries.size() == 0) {
92 logger.info("No departures found for station " + stationID);
93 }
94
95 if (type == FetchTrainType.BOTH) { //if we have both S-tog and regional order by departure/arrival time
96 Collections.sort( departureBean.entries );
97 }
98
99
100 return departureBean;
101 }
102
103 public DepartureBean lookupDepartures(String stationcode, TrainType type, boolean arrival) throws Exception {
104 if ( settings.getUseAzureSite() == true) {
105 return lookupDeparturesAzureSite(stationcode, type, arrival);
106 } else {
107 return lookupDeparturesMobileSite(stationcode, type, arrival);
108 }
109 }
110
111 private String getTypeStringAzure(TrainType type) {
112 switch (type) {
113 case STOG:
114 return "S-Tog";
115 case REGIONAL:
116 return "Fjerntog";
117 default:
118 return ""; //Can not happen
119 }
120 }
121
122 private String getTypeStringWww(TrainType type) {
123 switch (type) {
124 case STOG:
125 return "S2";
126 case REGIONAL:
127 return "FJRN";
128 default:
129 return ""; //Can not happen
130 }
131 }
132
133 public DepartureBean lookupDeparturesAzureSite(String stationcode, TrainType type, boolean arrival) throws Exception {
134
135 DepartureBean departureBean = new DepartureBean();
136
137
138 String typeString = getTypeStringAzure(type);
139 String arrivalDeparture = (arrival==false) ? "Afgang" : "Ankomst";
140
141 stationcode = URLEncoder.encode(stationcode,"ISO-8859-1");
142
143 String uri = "http://trafikinfo.bane.dk/Trafikinformation/AfgangAnkomst/" + arrivalDeparture + "/" + stationcode + "/" + typeString + "/UdvidetVisning";
144
145 logger.fine("URI: " + uri);
146 JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), settings.getReplyTimeout() );
147 CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
148
149 Document page = (Document) breaker.invoke(wrapper);
150
151 String tableName = arrival == false ? "afgangtabel" : "ankomsttabel";
152 Element table = page.getElementById(tableName);
153
154 if (table != null) {
155 Elements tableRows = table.getElementsByTag("tr");
156
157 //boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0);
158 //boolean passedTidsstreg = false;
159
160 for (Element currentRow : tableRows) {
161 String rowClass = currentRow.attr("class");
162 /*
163 if (tidsstregExists == true && passedTidsstreg == false) {
164 if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) {
165 passedTidsstreg = true;
166 } else {
167 continue;
168 }
169 }*/
170
171 if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
172
173 Elements fields = currentRow.getElementsByTag("td");
174
175 DepartureEntry departure = new DepartureEntry();
176
177 String time = fields.get(0).text();
178 if (time.equals(""))
179 time = "0:00"; //Bane.dk bug work-around
180 departure.setTime(time);
181
182 int updated = extractUpdated( fields.get(1) );
183 departure.setUpdated(updated);
184
185 String trainNumber = fields.get(2).text();
186 if (type == TrainType.STOG) //If it is S-train we need to extract the trainNumber
187 trainNumber = trainNumber + " " + extractTrainNumberAzure(fields.get(2));
188 departure.setTrainNumber(trainNumber);
189
190 String destination = fields.get(3).text();
191 departure.setDestination(destination);
192
193 String origin = fields.get(4).text();
194 departure.setOrigin(origin);
195
196 String location = fields.get(5).text();
197 departure.setLocation(location);
198
199 String status = fields.get(6).text().trim();
200 departure.setStatus(status);
201
202 String note = extractNote( fields.get(7) );
203 departure.setNote(note);
204
205 departure.setType(typeString);
206
207 departureBean.entries.add( departure );
208 }
209 }
210 } else {
211 logger.warning("No departures found for station=" + stationcode + ", type=" + type);
212 }
213
214 Element notifDiv = page.getElementById("station_planlagte_text");
215 if (notifDiv != null) {
216
217 Elements tables = notifDiv.getElementsByTag("table");
218 for (Element tab : tables) {
219
220 Elements anchors = tab.getElementsByTag("a");
221 if (anchors.size() == 2) {
222 departureBean.notifications.add( anchors.get(1).text() );
223 }
224 }
225
226 }
227
228
229 return departureBean;
230 }
231
232 public DepartureBean lookupDeparturesMobileSite(String stationcode, TrainType traintype, boolean arrival) throws Exception {
233
234 DepartureBean departureBean = new DepartureBean();
235
236
237 String typeString = getTypeStringWww(traintype);
238 String arrivalDeparture = (arrival==false) ? "afgang" : "ankomst";
239
240 stationcode = URLEncoder.encode(stationcode,"ISO-8859-1");
241
242 //String uri = "http://trafikinfo.bane.dk/Trafikinformation/AfgangAnkomst/" + arrivalDeparture + "/" + stationcode + "/" + typeString + "/UdvidetVisning";
243 String uri = "http://mobil.bane.dk/mobilStation.asp?artikelID=5332&stat_kode=" + stationcode + "&webprofil=" + typeString +"&beskrivelse=&mode=ankomstafgang&ankomstafgang=" + arrivalDeparture + "&gemstation=&fuldvisning=1";
244 logger.fine("URI: " + uri);
245 JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), settings.getReplyTimeout() );
246 CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
247
248 Document page = (Document) breaker.invoke(wrapper);
249
250
251 Element content = page.getElementsByClass("contentDiv").get(0);
252
253
254 if (content != null) {
255 Elements tableRows = content.child(0).children();
256
257
258
259 for (Element currentRow : tableRows) {
260 if (currentRow.tagName().equals("br") ) {
261 break;
262 }
263
264
265 Element link = currentRow.child(0);
266 System.out.println( currentRow.text() );;
267
268
269 String parts[] = currentRow.text().split(",");
270
271
272 DepartureEntry departure = new DepartureEntry();
273
274 /*
275 http://mobil.bane.dk/mobilStation.asp?artikelID=5332&tognummer=111&webprofil=FJRN&mode=rute&strBemaerkning=Afg%E5r+fra+%C5rhus+H+kl%2E07%3A21++&strRefURL=%2FmobilStation%2Easp%3FartikelID%3D5332%26stat%5Fkode%3DAR%26webprofil%3DFJRN%26beskrivelse%3D%25C5rhus%2BH%26mode%3Dankomstafgang%26ankomstafgang%3Dafgang%26gemstation%3D
276 */
277 int offset = 0;
278
279 String time = parts[offset++];
280 if (time.equals(""))
281 time = "0:00"; //Bane.dk bug work-around
282 departure.setTime(time);
283
284 int updated = 4; //does not exist on mobile
285 departure.setUpdated(updated);
286
287 String trainNumber = "-"; //extractTrainNumberAzure(fields.get(2));
288 /*if (traintype == TrainType.STOG) //If it is S-train we need to extract the trainNumber
289 trainNumber = trainNumber + " " + extractTrainNumberAzure(fields.get(2));*/
290 departure.setTrainNumber(trainNumber);
291
292 String destination = parts[offset++];
293 departure.setDestination(destination);
294
295 String origin = "-"; // fields.get(4).text(); does not exist on mobile
296 departure.setOrigin(origin);
297
298 String location = ""; // fields.get(5).text(); does not exist on mobile
299 departure.setLocation(location);
300
301 String status = ""; //fields.get(6).text().trim(); - extract from url
302 departure.setStatus(status);
303
304 String note = ""; //extractNote( fields.get(7) ); - extract from url
305 departure.setNote(note);
306
307 departure.setType(typeString);
308
309 departureBean.entries.add( departure );
310
311 }
312 } else {
313 logger.warning("No departures found for station=" + stationcode + ", type=" + traintype);
314 }
315
316 return departureBean;
317 }
318
319
320
321 public static String cleanText(String input) {
322 //apparently JSoup translates &nbsp; characters on www.bane.dk to 0xA0
323 return input.replace((char) 0xA0, (char)0x20).trim();
324 }
325
326
327 // old www site is not available any more
328 @Deprecated
329 public DepartureBean lookupDeparturesWwwSite(String stationcode, TrainType trainType, boolean arrival) throws Exception {
330
331 DepartureBean departureBean = new DepartureBean();
332
333 String type = getTypeStringWww(trainType);
334
335 stationcode = URLEncoder.encode(stationcode, "ISO-8859-1");
336
337
338 String uri = "http://www.bane.dk/visStation.asp?ArtikelID=4275&W=" + type + "&S=" + stationcode;
339 logger.fine("URI:" + uri);
340
341
342 JsoupInvocation wrapper = new JsoupInvocation( new URL(uri), settings.getReplyTimeout() );
343 CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("banedk");
344
345 Element page = (Element) breaker.invoke(wrapper);
346
347 String tableName = arrival == false ? "afgangtabel" : "ankomsttabel";
348 Element table = page.getElementById(tableName);
349
350
351
352 if (table != null) {
353 Elements tableRows = table.getElementsByTag("tr");
354
355 //boolean passedTidsstreg = false;
356 //boolean tidsstregExists = (table.getElementsByAttributeValue("class", "Tidsstreg").size() > 0);
357
358 for (Element currentRow : tableRows) {
359 String rowClass = currentRow.attr("class");
360 /*
361 if (tidsstregExists == true && passedTidsstreg == false) {
362 if (currentRow.getElementsByAttributeValue("class", "Tidsstreg").size() > 0) {
363 passedTidsstreg = true;
364 } else {
365 continue;
366 }
367 }*/
368
369
370 if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
371 Elements fields = currentRow.getElementsByTag("td");
372
373 DepartureEntry departure = new DepartureEntry();
374
375
376
377 String time = cleanText( fields.get(0).getAllElements().get(2).text() );
378 if (time.equals(""))
379 time = "0:00"; //Bane.dk bug work-around
380 departure.setTime(time);
381
382 int updated = extractUpdated( fields.get(1) );
383 departure.setUpdated(updated);
384
385 String trainNumber = cleanText( fields.get(2).text() );
386 if (type.equalsIgnoreCase("S2")) //If it is S-train we need to extract the trainNumber
387 trainNumber = trainNumber + " " + extractTrainNumberWww(fields.get(2));
388 departure.setTrainNumber(trainNumber);
389
390 String destination = cleanText( fields.get(3).text() );
391 departure.setDestination(destination);
392
393 String origin = cleanText( fields.get(4).text() );
394 departure.setOrigin(origin);
395
396 String location = cleanText( fields.get(5).text() );
397 departure.setLocation(location);
398
399 String status = cleanText( fields.get(6).text() );
400 departure.setStatus(status);
401
402 String note = cleanText( extractNote( fields.get(7) ) );
403 departure.setNote(note);
404
405 departure.setType(type);
406
407 departureBean.entries.add(departure);
408
409
410 }
411 }
412 } else {
413 logger.warning("No departures found for station=" + stationcode + ", type=" + type);
414 }
415
416
417 return departureBean;
418 }
419
420
421 private int extractUpdated(Element updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif"
422 int updated = -1;
423
424 Elements updatedImgs = updatedTd.getElementsByTag("img");
425 String updatedStr = updatedImgs.get(0).attr("src");
426
427 if (updatedStr != null) {
428 for (int i=0; i<updatedStr.length(); i++) {
429 char c = updatedStr.charAt(i);
430 if ( Character.isDigit(c)) {
431 updated = Character.digit(c, 10);
432 break;
433 }
434 }
435 }
436 return updated;
437 }
438
439 private String extractNote(Element noteTd) {
440 String note = noteTd.text().trim();
441
442
443 Elements elems = noteTd.getElementsByClass("bemtype");
444 if (elems.size() > 0 && note.charAt(note.length()-1) == 'i')
445 note = note.substring(0,note.length() -1 );
446
447 return note.trim();
448 }
449
450 private String extractTrainNumberAzure(Element trainTd) {
451 Element anchorElement = trainTd.getElementsByTag("a").get(0);
452 String href = anchorElement.attr("href");
453
454 int pos = href.lastIndexOf('/');
455 String number = href.substring(pos+1);
456
457 return number;
458 }
459
460 private String extractTrainNumberWww(Element trainTd) {
461 String number = "";
462 Element anchorElement = trainTd.getElementsByTag("a").get(0);
463 String href = anchorElement.attr("href");
464 String argstring = href.substring( href.indexOf('?') + 1);
465
466 String args[] = argstring.split("&");
467 for (String arg : args) {
468 String pair[] = arg.split("="); // Key=pair[0], Value=pair[1]
469
470 if (pair[0].equalsIgnoreCase("TogNr"))
471 number = pair[1];
472 }
473
474
475 return number;
476 }
477
478
479 //test
480 /*
481 public static void main(String args[]) throws Exception {
482 DepartureFetcher f = new DepartureFetcher();
483 List<DepartureBean> deps = f.lookupDepartures("AR", "FJRN");
484 for(DepartureBean d : deps) {
485 System.out.println( d.getTime() + ";" + d.getUpdated() + ";" + d.getTrainNumber() + ";" +
486 d.getDestination() + ";" + d.getOrigin() + ";" + d.getLocation() + ";" + d.getStatus() + ";" + d.getNote() );
487 }
488
489 System.out.println("--------------------------");
490 }*/
491 }

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