1 |
torben |
292 |
package dk.thoerup.traininfoservice; |
2 |
|
|
|
3 |
torben |
1190 |
|
4 |
torben |
292 |
import java.io.IOException; |
5 |
torben |
1190 |
import java.io.StringWriter; |
6 |
torben |
292 |
import java.sql.SQLException; |
7 |
torben |
348 |
import java.util.logging.Level; |
8 |
|
|
import java.util.logging.Logger; |
9 |
torben |
292 |
|
10 |
|
|
import javax.servlet.ServletException; |
11 |
torben |
958 |
import javax.servlet.annotation.WebServlet; |
12 |
torben |
292 |
import javax.servlet.http.HttpServlet; |
13 |
|
|
import javax.servlet.http.HttpServletRequest; |
14 |
|
|
import javax.servlet.http.HttpServletResponse; |
15 |
|
|
|
16 |
torben |
1060 |
import org.simpleframework.xml.Serializer; |
17 |
|
|
import org.simpleframework.xml.core.Persister; |
18 |
|
|
|
19 |
torben |
1061 |
import dk.thoerup.android.traininfo.common.StationBean; |
20 |
torben |
1255 |
import dk.thoerup.traininfoservice.db.StationDAO; |
21 |
torben |
1061 |
|
22 |
torben |
292 |
/** |
23 |
|
|
* Servlet implementation class LocateStations |
24 |
|
|
*/ |
25 |
torben |
958 |
@WebServlet(urlPatterns={"/LocateStations"}) |
26 |
torben |
292 |
public class LocateStations extends HttpServlet { |
27 |
|
|
private static final long serialVersionUID = 1L; |
28 |
|
|
|
29 |
torben |
348 |
Logger logger = Logger.getLogger( LocateStations.class.toString() ); |
30 |
torben |
431 |
|
31 |
torben |
588 |
StationDAO stationDao = new StationDAO(); |
32 |
torben |
431 |
|
33 |
torben |
588 |
|
34 |
torben |
431 |
protected String transformToIntList(String input) { |
35 |
|
|
String strings[] = input.split(","); |
36 |
torben |
588 |
|
37 |
torben |
431 |
StringBuffer sb = new StringBuffer(); |
38 |
|
|
sb.append("("); |
39 |
|
|
for (int i = 0; i<strings.length; i++) { |
40 |
|
|
if (i>0) { |
41 |
|
|
sb.append(","); |
42 |
|
|
} |
43 |
|
|
sb.append( Integer.parseInt(strings[i])); //by doing the integer conversion we ensure that it really is a integer |
44 |
|
|
} |
45 |
|
|
sb.append(")"); |
46 |
|
|
return sb.toString(); |
47 |
torben |
347 |
} |
48 |
torben |
322 |
|
49 |
torben |
431 |
|
50 |
torben |
1060 |
protected StationBean getStations(HttpServletRequest req) throws SQLException { |
51 |
|
|
StationBean stations = null; |
52 |
torben |
431 |
if (req.getParameter("latitude") != null && req.getParameter("latitude") != null) { |
53 |
torben |
711 |
|
54 |
|
|
Statistics.getInstance().incrementStationLookupsLocation(); |
55 |
|
|
|
56 |
torben |
431 |
double latitude = Double.parseDouble( req.getParameter("latitude") ); |
57 |
|
|
double longitude = Double.parseDouble( req.getParameter("longitude") ); |
58 |
torben |
588 |
stations = stationDao.getByLocation(latitude, longitude); |
59 |
|
|
|
60 |
torben |
431 |
} else if (req.getParameter("name") != null) { |
61 |
torben |
711 |
Statistics.getInstance().incrementStationLookupsName(); |
62 |
torben |
588 |
String name = req.getParameter("name").trim(); |
63 |
|
|
stations = stationDao.getByName(name); |
64 |
torben |
431 |
|
65 |
|
|
} else if (req.getParameter("list") != null) { |
66 |
torben |
711 |
Statistics.getInstance().incrementStationLookupsFavorites(); |
67 |
torben |
431 |
String list = transformToIntList( req.getParameter("list")); |
68 |
torben |
588 |
stations = stationDao.getByList(list); |
69 |
torben |
1082 |
} else if (req.getParameter("dump") != null) { |
70 |
|
|
stations = stationDao.dumpAll(); |
71 |
torben |
588 |
} |
72 |
|
|
return stations; |
73 |
torben |
347 |
} |
74 |
|
|
|
75 |
|
|
|
76 |
torben |
1060 |
protected String formatStations(StationBean stations) throws ServletException { |
77 |
torben |
347 |
|
78 |
torben |
1060 |
Serializer serializer = new Persister(); |
79 |
torben |
347 |
|
80 |
torben |
1190 |
StringWriter out = new StringWriter(); |
81 |
torben |
431 |
|
82 |
torben |
1060 |
try { |
83 |
|
|
serializer.write(stations, out); |
84 |
|
|
} catch (Exception e) { |
85 |
|
|
throw new ServletException(e); |
86 |
|
|
} |
87 |
|
|
|
88 |
|
|
return out.toString(); |
89 |
torben |
292 |
} |
90 |
|
|
|
91 |
torben |
425 |
@Override |
92 |
torben |
292 |
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { |
93 |
torben |
347 |
|
94 |
torben |
588 |
|
95 |
torben |
431 |
try { |
96 |
torben |
1060 |
StationBean stations = getStations(request); |
97 |
torben |
347 |
|
98 |
|
|
|
99 |
torben |
588 |
if (stations != null){ |
100 |
|
|
String xml = formatStations(stations); |
101 |
|
|
|
102 |
torben |
431 |
response.setContentType("text/xml"); |
103 |
|
|
response.getWriter().print(xml); |
104 |
|
|
} else { |
105 |
|
|
response.sendError(400, "not enough parameters"); |
106 |
|
|
} |
107 |
torben |
347 |
|
108 |
|
|
|
109 |
torben |
431 |
} catch (Exception e) { |
110 |
|
|
logger.log(Level.SEVERE, "Exception while finding stations", e); |
111 |
|
|
response.sendError(500); |
112 |
torben |
588 |
} |
113 |
torben |
292 |
} |
114 |
|
|
|
115 |
|
|
} |