traininfoservice/db/StationDAO.java

package dk.thoerup.traininfoservice.db;

import java.sql.Array;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Collections;
import java.util.Comparator;
import java.util.logging.Logger;

import dk.thoerup.android.traininfo.common.StationBean;
import dk.thoerup.android.traininfo.common.StationEntry;

public class StationDAO {
        
        private interface StatementParamSetter {
                public void setParams(PreparedStatement stmt) throws SQLException ;
        }
        private class NullSetter implements StatementParamSetter {
                @Override
                public void setParams(PreparedStatement stmt) throws SQLException {}
        }
        
        public static class NostationException extends Exception {
                private static final long serialVersionUID = 1L;
        }
        
        final static int LOCATION_LIMIT = 8;
        static final Logger logger = Logger.getLogger(StationDAO.class.getName());
        
        
        private StationEntry convertSingleRow(ResultSet res) throws SQLException {
                StationEntry station = new StationEntry();

                station.setId( res.getInt(1) );
                station.setName( res.getString(2) );
                station.setLatitude( res.getDouble(3) );
                station.setLongitude( res.getDouble(4) );
                station.setRegional( res.getString(5) );
                station.setStrain( res.getString(6) );
                station.setMetro( res.getString(7) );
                station.setAddress( res.getString(8) );
                station.setCalcdist( (int)res.getDouble(9) );
                
                station.setIsRegional( station.getRegional() != null );
                station.setIsStrain( station.getStrain() != null );
                station.setIsMetro( station.getMetro() != null );

                return station;
        }

        private StationBean convertResultset(ResultSet res) throws SQLException {
                StationBean stations = new StationBean();
                while (res.next()) {
                        stations.entries.add( convertSingleRow(res) );
                }
                return stations;

        }

        private StationBean fetchStations(String SQL, StatementParamSetter setter) throws SQLException {
                StationBean stations;
                Connection conn = null;
                PreparedStatement stmt = null;
                ResultSet res = null;
                try {
                        conn = DBConnection.getConnection();
                        stmt = conn.prepareStatement(SQL);
                        
                        setter.setParams(stmt);

                        res = stmt.executeQuery();
                        stations = convertResultset(res);

                } finally {
                        if (res != null)
                                res.close();
                        if (stmt != null)
                                stmt.close();
                        if (conn!= null)
                                conn.close();
                }
                return stations;
                
        }

        public StationEntry getById(int id) throws SQLException,NostationException {
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro,address,0.0 " +
                "FROM trainstations WHERE id=" + id + " AND enabled=true";
                                
                StationBean stations =  fetchStations(SQL, new NullSetter() );
                
                if (stations.entries.size() > 0 ) {
                        return stations.entries.get(0);
                } else {
                        throw new NostationException();
                }
        }
        

        /*
         * this code requires theses statements are run on database in order to do ILIKE searches against aliases (which is defines as array of varchar(64) )
         *     create function rlike(text,text) returns bool as 
         *     'select $2 ilike $1' language sql strict immutable;
         *     create operator ~~~ (procedure = rlike, leftarg = text, rightarg = text, commutator = ~~);
         */
        public StationBean getByNameNormal(final String name) throws SQLException {
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0 " + 
                "FROM trainstations " + 
                "WHERE (name ILIKE ? OR ? ~~~ ANY(aliases)) AND enabled = true " +
                "ORDER BY name ";

                class NameSetter implements StatementParamSetter {
                        @Override
                        public void setParams(PreparedStatement stmt) throws SQLException {
                                stmt.setString(1, name + "%");
                                stmt.setString(2, name + "%");                          
                        }                       
                }
                
                return fetchStations(SQL, new NameSetter() );
        }
        
        
        public StationBean getByNameFuzzy(final String name) throws SQLException {
                String SQL = "SELECT * FROM (" +
                                         "    SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0, " +
                                         "    levenshtein(lower(name),lower(?) ) as leven " +
                                         "    FROM trainstations " +
                                         "    WHERE  enabled = true ) as lev2 " +
                                         "WHERE (leven <= 3) " +                
                                         "ORDER BY leven " + 
                                         "LIMIT 1";

                class NameSetter implements StatementParamSetter {
                        @Override
                        public void setParams(PreparedStatement stmt) throws SQLException {
                                stmt.setString(1, name );
                        }                       
                }
                
                StationBean stations = fetchStations(SQL, new NameSetter() );
                stations.fuzzystrmatch = true;
                return stations;
        }
        
        private String removeSuffix(String str, String suffix) {
                if (str.endsWith(suffix)) {
                        return str.substring(0, str.length() - suffix.length() );
                } else {
                        return str;
                }
        }
        
        public StationBean getByName(String name) throws SQLException {
                name = removeSuffix(name, " st.");
                name = removeSuffix(name, " st");
                name = removeSuffix(name, " station");
                
                StationBean stations = getByNameNormal(name);
                
                if (stations.entries.size() == 0) {
                        stations = getByNameFuzzy(name);

                        logger.info("getByName failover: " + name + "(" + (stations.entries.size() >0) + ")" );
                }
                return stations;
        }
        
        
        //Latitude (horizonal), longitude(vertical) so
        // 1 degree latitude is ~ 111320 meters, since the distance between the horizonal lines is always the same 
        // 1 degree longitude is ~111320 meters at equator but gets shorter as we get closer to the poles.
        // so 1 degree longitude is 64.5 km at denmarks southern point (gedser=54.55,11.95)
        // and is 59.4km at northern point (skagen = 57.75,10.65)
        // The "hack" with max 0.4 degrees latitude and 0.75 degrees longitude is only valid since we only service danish trains,
        // in denmark 0.4dg latitude ~ 44km, 0.75dg longitude ~ 47km

        // the ultra fast method  (and only slightly inaccurate as long as we only cover a limited geographically area)
        // is using an aproximation of the length of 1 latitude degree and 1 longitude degree and just use pythagoras to 
        // calculate the distance:
        //     sqrt( power(abs(latitude-?)*111320, 2) + power(abs(longitude-?)*63000,2) )::int as calcdist 

        public StationBean getByLocationWorker(final double latitude, final double longitude, final boolean geolimit) throws SQLException {
                
                String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
                
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, " + 
                        "earth_distance( earth_coord, ll_to_earth(?,?))::int AS calcdist " + 
                        "FROM trainstations " +
                        "WHERE enabled = true " + limitExpression +
                        "ORDER BY calcdist ASC " + 
                        "LIMIT " + LOCATION_LIMIT;

                
                class LatlongSetter implements StatementParamSetter {
                        @Override
                        public void setParams(PreparedStatement stmt) throws SQLException {
                                stmt.setDouble(1, latitude);
                                stmt.setDouble(2, longitude);
                                if (geolimit == true) {
                                        stmt.setDouble(3, latitude);
                                        stmt.setDouble(4, longitude);
                                }                               
                        }                       
                }
                
                return fetchStations(SQL, new LatlongSetter() );
        }
        
        public StationBean getByLocation(double latitude, double longitude) throws SQLException {
                StationBean result = getByLocationWorker(latitude, longitude, true);
                
                if (result.entries.size() < LOCATION_LIMIT) { //failover
                        logger.info("getByLocation failover: " +latitude + "," + longitude);
                        
                        result = getByLocationWorker(latitude, longitude, false);
                }
                
                return result;
        }
        
        
        public StationBean getByList(String list) throws SQLException {
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro, address,0.0 " + 
                "FROM trainstations " + 
                "WHERE id IN " + list + " AND enabled = true " +
                "ORDER BY name ";
                
                return fetchStations(SQL, new NullSetter() );
        }
        

        public StationEntry getSimpleByName(final String name) throws SQLException {
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0 " + 
                "FROM trainstations " + 
                "WHERE name = ?  AND enabled = true " +
                "LIMIT 1 ";

                class NameSetter implements StatementParamSetter {
                        @Override
                        public void setParams(PreparedStatement stmt) throws SQLException {
                                stmt.setString(1, name );
                        }                       
                }
                
                StationBean stations = fetchStations(SQL, new NameSetter() );
                
                if (stations.entries.size() == 1) {
                        return stations.entries.get(0);
                } else {
                        return null;
                }
        }
        
        Comparator<StationEntry> nameComparator = new Comparator<StationEntry>() {
                @Override
                public int compare(StationEntry arg0, StationEntry arg1) {
                        return arg0.getName().compareTo( arg1.getName() );
                }               
        };
        
        //used to create full dump in order to populate Google Appengine DB
        //after 1.1.0 also used to populate client-side station list
        public StationBean dumpAll() throws SQLException {
                
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro,address,0.0,aliases " +
                                "FROM trainstations WHERE enabled = true";
                
                Connection conn = null;
                Statement stmt = null;
                ResultSet res = null;           

                
                try {
                        conn = DBConnection.getConnection();

                        stmt = conn.createStatement();
                        res = stmt.executeQuery(SQL);           
                                                
                        // Does mostly the same as convertResultset()
                        StationBean stations = new StationBean();
                        while (res.next()) {
                                StationEntry entry = convertSingleRow(res);
                                
                                Array arr = res.getArray(10);
                                if (arr != null) {
                                        String[] aliases = (String[]) arr.getArray();
                                        entry.setAliases(aliases);
                                }
                                
                                stations.entries.add( entry );
                                
                        }
                        Collections.sort( stations.entries,nameComparator );
                        return stations;
                        

                } finally {
                        if (res != null)
                                res.close();
                        if (stmt != null)
                                stmt.close();
                        if (conn != null)
                                conn.close();
                }
                
        }

        @Deprecated
        public static String getStationName(int stationID) {
                String station = "";

                Connection conn = null;
                try {
                        conn = DBConnection.getConnection();
                        Statement stmt = conn.createStatement();
                        ResultSet rs = stmt.executeQuery("SELECT name FROM trainstations WHERE id=" + stationID);
                        if (rs.next()) {
                                station = rs.getString(1);
                        }

                } catch (Exception e) { 
                } finally {
                        try {
                                if (conn != null && !conn.isClosed())
                                        conn.close();
                        } catch (Exception e) {}
                }

                return station;
        }
        
        
        @Deprecated
        public int getIdByName(final String name) throws SQLException {
                String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0 " + 
                "FROM trainstations " + 
                "WHERE name = ?  AND enabled = true " +
                "LIMIT 1 ";

                class NameSetter implements StatementParamSetter {
                        @Override
                        public void setParams(PreparedStatement stmt) throws SQLException {
                                stmt.setString(1, name );
                        }                       
                }
                
                StationBean stations = fetchStations(SQL, new NameSetter() );
                
                if (stations.entries.size() == 1) {
                        return stations.entries.get(0).getId();
                } else {
                        return -1;
                }
        }
}
1	torben	1255	package dk.thoerup.traininfoservice.db;
2	torben	588
3	torben	1082	import java.sql.Array;
4	torben	588	import java.sql.Connection;
5			import java.sql.PreparedStatement;
6			import java.sql.ResultSet;
7			import java.sql.SQLException;
8			import java.sql.Statement;
9	torben	1574	import java.util.Collections;
10			import java.util.Comparator;
11	torben	895	import java.util.logging.Logger;
12	torben	588
13	torben	1061	import dk.thoerup.android.traininfo.common.StationBean;
14	torben	1409	import dk.thoerup.android.traininfo.common.StationEntry;
15	torben	1060
16	torben	588	public class StationDAO {
17	torben	1145
18	torben	1504	private interface StatementParamSetter {
19			public void setParams(PreparedStatement stmt) throws SQLException ;
20			}
21			private class NullSetter implements StatementParamSetter {
22			@Override
23			public void setParams(PreparedStatement stmt) throws SQLException {}
24			}
25
26	torben	1145	public static class NostationException extends Exception {
27			private static final long serialVersionUID = 1L;
28			}
29
30	torben	997	final static int LOCATION_LIMIT = 8;
31	torben	895	static final Logger logger = Logger.getLogger(StationDAO.class.getName());
32	torben	841
33	torben	895
34	torben	1060	private StationEntry convertSingleRow(ResultSet res) throws SQLException {
35			StationEntry station = new StationEntry();
36	torben	836
37	torben	588	station.setId( res.getInt(1) );
38			station.setName( res.getString(2) );
39			station.setLatitude( res.getDouble(3) );
40			station.setLongitude( res.getDouble(4) );
41			station.setRegional( res.getString(5) );
42			station.setStrain( res.getString(6) );
43			station.setMetro( res.getString(7) );
44			station.setAddress( res.getString(8) );
45			station.setCalcdist( (int)res.getDouble(9) );
46	torben	1060
47			station.setIsRegional( station.getRegional() != null );
48			station.setIsStrain( station.getStrain() != null );
49			station.setIsMetro( station.getMetro() != null );
50	torben	836
51	torben	588	return station;
52			}
53	torben	836
54	torben	1060	private StationBean convertResultset(ResultSet res) throws SQLException {
55			StationBean stations = new StationBean();
56	torben	588	while (res.next()) {
57	torben	1060	stations.entries.add( convertSingleRow(res) );
58	torben	588	}
59			return stations;
60	torben	836
61	torben	588	}
62	torben	836
63	torben	1504	private StationBean fetchStations(String SQL, StatementParamSetter setter) throws SQLException {
64			StationBean stations;
65	torben	588	Connection conn = null;
66	torben	1504	PreparedStatement stmt = null;
67	torben	589	ResultSet res = null;
68	torben	588	try {
69			conn = DBConnection.getConnection();
70	torben	1504	stmt = conn.prepareStatement(SQL);
71
72			setter.setParams(stmt);
73	torben	836
74	torben	1504	res = stmt.executeQuery();
75			stations = convertResultset(res);
76
77	torben	588	} finally {
78	torben	589	if (res != null)
79			res.close();
80			if (stmt != null)
81			stmt.close();
82	torben	1504	if (conn!= null)
83	torben	588	conn.close();
84			}
85	torben	1504	return stations;
86
87			}
88	torben	836
89	torben	1504	public StationEntry getById(int id) throws SQLException,NostationException {
90			String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro,address,0.0 " +
91			"FROM trainstations WHERE id=" + id + " AND enabled=true";
92
93			StationBean stations = fetchStations(SQL, new NullSetter() );
94
95			if (stations.entries.size() > 0 ) {
96			return stations.entries.get(0);
97			} else {
98			throw new NostationException();
99			}
100	torben	588	}
101	torben	1082
102	torben	836
103	torben	1082
104	torben	714	/*
105			* this code requires theses statements are run on database in order to do ILIKE searches against aliases (which is defines as array of varchar(64) )
106			* create function rlike(text,text) returns bool as
107			* 'select $2 ilike $1' language sql strict immutable;
108	torben	836	* create operator ~~~ (procedure = rlike, leftarg = text, rightarg = text, commutator = ~~);
109	torben	714	*/
110	torben	1507	public StationBean getByNameNormal(final String name) throws SQLException {
111	torben	588	String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0 " +
112			"FROM trainstations " +
113	torben	714	"WHERE (name ILIKE ? OR ? ~~~ ANY(aliases)) AND enabled = true " +
114	torben	588	"ORDER BY name ";
115
116	torben	1504	class NameSetter implements StatementParamSetter {
117			@Override
118			public void setParams(PreparedStatement stmt) throws SQLException {
119			stmt.setString(1, name + "%");
120			stmt.setString(2, name + "%");
121			}
122	torben	588	}
123	torben	1504
124			return fetchStations(SQL, new NameSetter() );
125	torben	588	}
126	torben	1507
127
128			public StationBean getByNameFuzzy(final String name) throws SQLException {
129	torben	1512	String SQL = "SELECT * FROM (" +
130			" SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0, " +
131			" levenshtein(lower(name),lower(?) ) as leven " +
132			" FROM trainstations " +
133			" WHERE enabled = true ) as lev2 " +
134			"WHERE (leven <= 3) " +
135			"ORDER BY leven " +
136			"LIMIT 1";
137	torben	836
138	torben	1507	class NameSetter implements StatementParamSetter {
139			@Override
140			public void setParams(PreparedStatement stmt) throws SQLException {
141			stmt.setString(1, name );
142			}
143			}
144
145			StationBean stations = fetchStations(SQL, new NameSetter() );
146			stations.fuzzystrmatch = true;
147			return stations;
148			}
149
150	torben	1516	private String removeSuffix(String str, String suffix) {
151			if (str.endsWith(suffix)) {
152			return str.substring(0, str.length() - suffix.length() );
153			} else {
154			return str;
155			}
156			}
157
158	torben	1513	public StationBean getByName(String name) throws SQLException {
159	torben	1516	name = removeSuffix(name, " st.");
160			name = removeSuffix(name, " st");
161			name = removeSuffix(name, " station");
162
163	torben	1507	StationBean stations = getByNameNormal(name);
164
165			if (stations.entries.size() == 0) {
166			stations = getByNameFuzzy(name);
167	torben	1515
168			logger.info("getByName failover: " + name + "(" + (stations.entries.size() >0) + ")" );
169	torben	1507	}
170			return stations;
171			}
172
173
174
175	torben	1254	//Latitude (horizonal), longitude(vertical) so
176			// 1 degree latitude is ~ 111320 meters, since the distance between the horizonal lines is always the same
177			// 1 degree longitude is ~111320 meters at equator but gets shorter as we get closer to the poles.
178	torben	1511	// so 1 degree longitude is 64.5 km at denmarks southern point (gedser=54.55,11.95)
179			// and is 59.4km at northern point (skagen = 57.75,10.65)
180			// The "hack" with max 0.4 degrees latitude and 0.75 degrees longitude is only valid since we only service danish trains,
181	torben	928	// in denmark 0.4dg latitude ~ 44km, 0.75dg longitude ~ 47km
182	torben	836
183	torben	741	// the ultra fast method (and only slightly inaccurate as long as we only cover a limited geographically area)
184			// is using an aproximation of the length of 1 latitude degree and 1 longitude degree and just use pythagoras to
185			// calculate the distance:
186	torben	836	// sqrt( power(abs(latitude-?)111320, 2) + power(abs(longitude-?)63000,2) )::int as calcdist
187
188	torben	1504	public StationBean getByLocationWorker(final double latitude, final double longitude, final boolean geolimit) throws SQLException {
189	torben	841
190	torben	929	String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
191	torben	841
192			String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, " +
193			"earth_distance( earth_coord, ll_to_earth(?,?))::int AS calcdist " +
194			"FROM trainstations " +
195			"WHERE enabled = true " + limitExpression +
196			"ORDER BY calcdist ASC " +
197			"LIMIT " + LOCATION_LIMIT;
198	torben	849
199	torben	841
200	torben	1504	class LatlongSetter implements StatementParamSetter {
201			@Override
202			public void setParams(PreparedStatement stmt) throws SQLException {
203			stmt.setDouble(1, latitude);
204			stmt.setDouble(2, longitude);
205			if (geolimit == true) {
206			stmt.setDouble(3, latitude);
207			stmt.setDouble(4, longitude);
208			}
209			}
210			}
211	torben	849
212	torben	1504	return fetchStations(SQL, new LatlongSetter() );
213	torben	588	}
214	torben	841
215	torben	1060	public StationBean getByLocation(double latitude, double longitude) throws SQLException {
216			StationBean result = getByLocationWorker(latitude, longitude, true);
217	torben	841
218	torben	1060	if (result.entries.size() < LOCATION_LIMIT) { //failover
219	torben	894	logger.info("getByLocation failover: " +latitude + "," + longitude);
220
221	torben	841	result = getByLocationWorker(latitude, longitude, false);
222			}
223
224			return result;
225			}
226
227
228	torben	836
229	torben	1060	public StationBean getByList(String list) throws SQLException {
230	torben	836	String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro, address,0.0 " +
231			"FROM trainstations " +
232			"WHERE id IN " + list + " AND enabled = true " +
233			"ORDER BY name ";
234	torben	1504
235			return fetchStations(SQL, new NullSetter() );
236			}
237
238	torben	836
239	torben	1504
240			public StationEntry getSimpleByName(final String name) throws SQLException {
241			String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0 " +
242			"FROM trainstations " +
243			"WHERE name = ? AND enabled = true " +
244			"LIMIT 1 ";
245	torben	836
246	torben	1504	class NameSetter implements StatementParamSetter {
247			@Override
248			public void setParams(PreparedStatement stmt) throws SQLException {
249			stmt.setString(1, name );
250			}
251	torben	836	}
252	torben	1504
253			StationBean stations = fetchStations(SQL, new NameSetter() );
254
255			if (stations.entries.size() == 1) {
256			return stations.entries.get(0);
257			} else {
258			return null;
259			}
260			}
261	torben	1505
262	torben	1574	Comparator<StationEntry> nameComparator = new Comparator<StationEntry>() {
263			@Override
264			public int compare(StationEntry arg0, StationEntry arg1) {
265			return arg0.getName().compareTo( arg1.getName() );
266			}
267			};
268
269	torben	1505	//used to create full dump in order to populate Google Appengine DB
270	torben	1569	//after 1.1.0 also used to populate client-side station list
271	torben	1505	public StationBean dumpAll() throws SQLException {
272
273			String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro,address,0.0,aliases " +
274	torben	1574	"FROM trainstations WHERE enabled = true";
275	torben	1505
276			Connection conn = null;
277			Statement stmt = null;
278			ResultSet res = null;
279	torben	836
280	torben	1505
281			try {
282			conn = DBConnection.getConnection();
283
284			stmt = conn.createStatement();
285			res = stmt.executeQuery(SQL);
286
287			// Does mostly the same as convertResultset()
288			StationBean stations = new StationBean();
289			while (res.next()) {
290			StationEntry entry = convertSingleRow(res);
291
292			Array arr = res.getArray(10);
293			if (arr != null) {
294			String[] aliases = (String[]) arr.getArray();
295			entry.setAliases(aliases);
296			}
297
298			stations.entries.add( entry );
299
300			}
301	torben	1574	Collections.sort( stations.entries,nameComparator );
302	torben	1505	return stations;
303
304
305			} finally {
306			if (res != null)
307			res.close();
308			if (stmt != null)
309			stmt.close();
310			if (conn != null)
311			conn.close();
312			}
313
314			}
315
316	torben	1417	@Deprecated
317	torben	836	public static String getStationName(int stationID) {
318			String station = "";
319
320			Connection conn = null;
321			try {
322			conn = DBConnection.getConnection();
323			Statement stmt = conn.createStatement();
324			ResultSet rs = stmt.executeQuery("SELECT name FROM trainstations WHERE id=" + stationID);
325			if (rs.next()) {
326			station = rs.getString(1);
327			}
328
329			} catch (Exception e) {
330			} finally {
331	torben	588	try {
332	torben	836	if (conn != null && !conn.isClosed())
333	torben	588	conn.close();
334	torben	836	} catch (Exception e) {}
335			}
336	torben	650
337	torben	836	return station;
338			}
339	torben	1417
340	torben	1504
341
342	torben	1417	@Deprecated
343	torben	1504	public int getIdByName(final String name) throws SQLException {
344	torben	836	String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0 " +
345			"FROM trainstations " +
346			"WHERE name = ? AND enabled = true " +
347			"LIMIT 1 ";
348	torben	650
349	torben	1504	class NameSetter implements StatementParamSetter {
350			@Override
351			public void setParams(PreparedStatement stmt) throws SQLException {
352			stmt.setString(1, name );
353			}
354	torben	836	}
355	torben	1504
356			StationBean stations = fetchStations(SQL, new NameSetter() );
357
358			if (stations.entries.size() == 1) {
359			return stations.entries.get(0).getId();
360	torben	836	} else {
361			return -1;
362			}
363			}
364	torben	588	}