6 |
import java.sql.ResultSet; |
import java.sql.ResultSet; |
7 |
import java.sql.SQLException; |
import java.sql.SQLException; |
8 |
import java.sql.Statement; |
import java.sql.Statement; |
9 |
|
import java.util.Collections; |
10 |
|
import java.util.Comparator; |
11 |
import java.util.logging.Logger; |
import java.util.logging.Logger; |
12 |
|
|
13 |
import dk.thoerup.android.traininfo.common.StationBean; |
import dk.thoerup.android.traininfo.common.StationBean; |
126 |
|
|
127 |
|
|
128 |
public StationBean getByNameFuzzy(final String name) throws SQLException { |
public StationBean getByNameFuzzy(final String name) throws SQLException { |
129 |
String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0, " + |
String SQL = "SELECT * FROM (" + |
130 |
"levenshtein(lower(name),lower(?) ) as leven " + |
" SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog, stationcode_metro, address, 0.0, " + |
131 |
"FROM trainstations " + |
" levenshtein(lower(name),lower(?) ) as leven " + |
132 |
"WHERE (levenshtein(lower(name),lower(?) ) <= 3) " + |
" FROM trainstations " + |
133 |
"AND enabled = true " + |
" WHERE enabled = true ) as lev2 " + |
134 |
"ORDER BY leven " + |
"WHERE (leven <= 3) " + |
135 |
"LIMIT 1"; |
"ORDER BY leven " + |
136 |
|
"LIMIT 1"; |
137 |
|
|
138 |
class NameSetter implements StatementParamSetter { |
class NameSetter implements StatementParamSetter { |
139 |
@Override |
@Override |
140 |
public void setParams(PreparedStatement stmt) throws SQLException { |
public void setParams(PreparedStatement stmt) throws SQLException { |
141 |
stmt.setString(1, name ); |
stmt.setString(1, name ); |
|
stmt.setString(2, name ); |
|
142 |
} |
} |
143 |
} |
} |
144 |
|
|
147 |
return stations; |
return stations; |
148 |
} |
} |
149 |
|
|
150 |
public StationBean getByName(final String name) throws SQLException { |
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 |
|
public StationBean getByName(String name) throws SQLException { |
159 |
|
name = removeSuffix(name, " st."); |
160 |
|
name = removeSuffix(name, " st"); |
161 |
|
name = removeSuffix(name, " station"); |
162 |
|
|
163 |
StationBean stations = getByNameNormal(name); |
StationBean stations = getByNameNormal(name); |
164 |
|
|
165 |
if (stations.entries.size() == 0) { |
if (stations.entries.size() == 0) { |
|
logger.info("getByName failover: " + name); |
|
166 |
stations = getByNameFuzzy(name); |
stations = getByNameFuzzy(name); |
167 |
|
|
168 |
|
logger.info("getByName failover: " + name + "(" + (stations.entries.size() >0) + ")" ); |
169 |
} |
} |
170 |
return stations; |
return stations; |
171 |
} |
} |
175 |
//Latitude (horizonal), longitude(vertical) so |
//Latitude (horizonal), longitude(vertical) so |
176 |
// 1 degree latitude is ~ 111320 meters, since the distance between the horizonal lines is always the same |
// 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. |
// 1 degree longitude is ~111320 meters at equator but gets shorter as we get closer to the poles. |
178 |
// the "hack" with max 0.4 degrees latitude and 0.75 degrees longitude is only valid since we only service danish trains, |
// 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 |
// in denmark 0.4dg latitude ~ 44km, 0.75dg longitude ~ 47km |
// in denmark 0.4dg latitude ~ 44km, 0.75dg longitude ~ 47km |
182 |
|
|
183 |
// the ultra fast method (and only slightly inaccurate as long as we only cover a limited geographically area) |
// the ultra fast method (and only slightly inaccurate as long as we only cover a limited geographically area) |
259 |
} |
} |
260 |
} |
} |
261 |
|
|
262 |
|
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 |
//used to create full dump in order to populate Google Appengine DB |
//used to create full dump in order to populate Google Appengine DB |
270 |
@Deprecated |
//after 1.1.0 also used to populate client-side station list |
271 |
public StationBean dumpAll() throws SQLException { |
public StationBean dumpAll() throws SQLException { |
272 |
|
|
273 |
String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro,address,0.0,aliases " + |
String SQL = "SELECT id,name,latitude,longitude,stationcode_fjrn,stationcode_stog,stationcode_metro,address,0.0,aliases " + |
274 |
"FROM trainstations WHERE enabled = true ORDER BY id"; |
"FROM trainstations WHERE enabled = true"; |
275 |
|
|
276 |
|
|
277 |
|
StationBean stations = fetchStations(SQL, new NullSetter() ); |
278 |
|
Collections.sort( stations.entries,nameComparator ); |
279 |
|
|
280 |
|
return stations; |
281 |
|
|
282 |
|
/* |
283 |
Connection conn = null; |
Connection conn = null; |
284 |
Statement stmt = null; |
Statement stmt = null; |
285 |
ResultSet res = null; |
ResultSet res = null; |
305 |
stations.entries.add( entry ); |
stations.entries.add( entry ); |
306 |
|
|
307 |
} |
} |
308 |
|
Collections.sort( stations.entries,nameComparator ); |
309 |
return stations; |
return stations; |
310 |
|
|
311 |
|
|
316 |
stmt.close(); |
stmt.close(); |
317 |
if (conn != null) |
if (conn != null) |
318 |
conn.close(); |
conn.close(); |
319 |
} |
}*/ |
320 |
|
|
321 |
} |
} |
322 |
|
|