thoerup/traininfoservice/StationDAO.java

package dk.thoerup.traininfoservice;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.jdo.Extent;
import javax.jdo.PersistenceManager;
import javax.jdo.Query;

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

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

import dk.thoerup.android.traininfo.common.StationBean;
import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
import dk.thoerup.traininfoservice.geo.Geo;
import dk.thoerup.traininfoservice.jdo.JdoStationBean;
import dk.thoerup.traininfoservice.jdo.PMF;

public class StationDAO {
        final static int LOCATION_LIMIT = 8;
        static final Logger logger = Logger.getLogger(StationDAO.class.getName());
        
        final int TIMEOUT_SECONDS = 30*60;
        
        Cache cache;
        
        public StationDAO() {
        Map props = new HashMap();
        props.put(GCacheFactory.EXPIRATION_DELTA, TIMEOUT_SECONDS);        
                
                try {
            cache = CacheManager.getInstance().getCacheFactory().createCache(props);            
        } catch (CacheException e) {
                logger.log(Level.WARNING, "error creating cache", e);
        }
        
        }


        public StationEntry getById(int id)  {

                PersistenceManager pm = null;
                
                try {
                        pm = PMF.get().getPersistenceManager();
                        JdoStationBean bean =pm.getObjectById(JdoStationBean.class, new Integer(id) );
                        return bean.toStationEntry();
                } finally {
                        pm.close();
                }
        }

        /* damn that JDO sucks so we to the filtering in java-code */
        public StationBean getByName(String searchname) {
                PersistenceManager pm = null;
                
                try {
                        /*pm = PMF.get().getPersistenceManager();
                        
                        
                        Query q = pm.newQuery(JdoStationBean.class);
                        q.setOrdering("name");                  
                        List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();*/
                        
                        List<JdoStationBean> beanList = getAllStations();
                        
                        
                        StationBean stationBean = new StationBean();
                        
                        searchname = searchname.toLowerCase();
                        for(JdoStationBean bean : beanList) { 
                                if (bean.getName().toLowerCase().startsWith(searchname)) {
                                        stationBean.entries.add( bean.toStationEntry() );
                                } else {
                                        for (String alias : bean.aliases ) {
                                                if (alias.toLowerCase().startsWith(searchname)) {
                                                        stationBean.entries.add( bean.toStationEntry() );
                                                }
                                        }
                                }
                        }

                        return stationBean;                     
                } finally {
                //      pm.close();
                }
        }
        
        public List<JdoStationBean> getAllStations() {
                final String key = "allstations"; 
                List<JdoStationBean> result = (List<JdoStationBean>) cache.get(key);
                
                if (result == null) {
                        logger.info("getAllStations Cache miss");
                        
                        PersistenceManager pm = null;
                        final double LAT = 0.4;
                        final double LNG = 0.75;
                        
                        try {
                                pm = PMF.get().getPersistenceManager();
                                Extent<JdoStationBean> all = pm.getExtent(JdoStationBean.class, false);
                                
                                result = new ArrayList<JdoStationBean>();
                                for (JdoStationBean station : all) {
                                        result.add(station);
                                }
                                
                                cache.put(key, result);
                                
                        } finally {
                                pm.close();
                        }
                } else {
                        logger.info("getAllStations Cache hit");
                }
                
                
                return result;
                
        }
        

        //String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
        /*
        public List<JdoStationBean> getByLocationList(double latitude, double longitude, boolean geolimit)  {
        
                PersistenceManager pm = null;
                final double LAT = 0.4;
                final double LNG = 0.75;
                
                try {
                        pm = PMF.get().getPersistenceManager();
                        Query q = pm.newQuery(JdoStationBean.class);
                        
                        
                        if (geolimit == true) {
                                double minLat = latitude - LAT;
                                double maxLat = latitude + LAT;
                                
                                //DAMN JDO implementation only allows us to compare on one parameter

                                String filter = String.format("latitude > %f && latitude < %f", minLat, maxLat);
                                
                                q.setFilter( filter );
                        }
                        
                        List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();                     
                        
                        logger.info("beanList size " + beanList.size());
                        
                        return beanList;
                } finally {
                        pm.close();
                }
        }*/


        public StationBean getByLocation(double latitude, double longitude)  {
                /*
                List<JdoStationBean> beanList = getByLocationList(latitude,longitude,true);
                
                if (beanList.size() < LOCATION_LIMIT ) {
                        logger.info("getByLocation failover: " +latitude + "," + longitude);
                        beanList = getByLocationList(latitude,longitude, false);
                }*/
                
                List<JdoStationBean> beanList = getAllStations();

                StationBean stationBean = new StationBean();                    


                Geo location = new Geo(latitude,longitude);
                for(JdoStationBean bean : beanList) {
                        double meter = Geo.distanceKM( location, new Geo(bean.getLatitude(), bean.getLongitude() )) * 1000.0;

                        bean.distance = (int) meter;
                }


                Collections.sort(beanList, new Comparator<JdoStationBean>() {
                        @Override
                        public int compare(JdoStationBean o1, JdoStationBean o2) {
                                if (o1.distance < o2.distance) {
                                        return -1;
                                } else if (o1.distance > o2.distance) {
                                        return 1;
                                } else {
                                        return 0;
                                }
                        }
                });

                for (int i=0; i<LOCATION_LIMIT && i<beanList.size(); i++) {
                        stationBean.entries.add( beanList.get(i).toStationEntry() );
                }

                return stationBean;                     
        }
        

        public StationBean getByList(String list)  {
                PersistenceManager pm = null;
                
                try {
                        String parts[] = list.split(",");
                        
                        StringBuilder filter = new StringBuilder();
                        
                        for(String part : parts)  {
                                if (filter.length() > 0) {
                                        filter.append( " || " );
                                }
                                filter.append("id == ").append(part);
                        }                       
                        
                        //String filter = "id == 10 || id == 82"; //TODO: build filter
                        
                        pm = PMF.get().getPersistenceManager();
                        Query q = pm.newQuery(JdoStationBean.class);
                        q.setFilter( filter.toString() );
                        q.setOrdering("name");
                        
                        List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
                        
                        StationBean stationBean = new StationBean();
                        
                        for(JdoStationBean bean : beanList) {
                                stationBean.entries.add( bean.toStationEntry() );
                        }

                        return stationBean;                     
                } finally {
                        pm.close();
                }

        }


        public int getIdByName(String name)  {
                
                List<JdoStationBean> beanList = null;
                
                PersistenceManager pm = null;
                
                try {
                        
                        String filter = " name == '" + name + "'";
                        
                        pm = PMF.get().getPersistenceManager();
                        Query q = pm.newQuery(JdoStationBean.class);
                        q.setFilter(filter);
                        
                        beanList = (List<JdoStationBean>) q.execute();
                        
                        StationBean stationBean = new StationBean();
                        
                        for(JdoStationBean bean : beanList) {
                                stationBean.entries.add( bean.toStationEntry() );
                        }
                        
                } finally {
                        pm.close();
                }

                if ( beanList != null && beanList.size()  == 1) {
                        return (int) beanList.get(0).getId();
                } else {
                        return -1;
                }
        }
        
        @SuppressWarnings("unchecked")
        public int saveStations(StationBean stationBean) throws IOException {
                PersistenceManager pm = null;
                
                try {
                        pm = PMF.get().getPersistenceManager();
                        
                        List oldEntries = (List) pm.newQuery(JdoStationBean.class).execute();
                        pm.deletePersistentAll(oldEntries);
                        
                        List<JdoStationBean> jdoList = new ArrayList<JdoStationBean>();
                        for (StationEntry station : stationBean.entries) {
                                JdoStationBean jdoBean = JdoStationBean.fromStationEntry(station);
                                
                                jdoList.add(jdoBean);
                                
                        }
                        pm.makePersistentAll(jdoList);
                        
                        return jdoList.size();
                        
                } finally {
                        pm.close();
                }
        }
        
}
1	torben	588	package dk.thoerup.traininfoservice;
2
3	torben	1105	import java.io.IOException;
4			import java.util.ArrayList;
5			import java.util.Collections;
6			import java.util.Comparator;
7	torben	1110	import java.util.HashMap;
8	torben	1105	import java.util.List;
9	torben	1110	import java.util.Map;
10			import java.util.logging.Level;
11	torben	895	import java.util.logging.Logger;
12	torben	588
13	torben	1110	import javax.jdo.Extent;
14	torben	1093	import javax.jdo.PersistenceManager;
15	torben	1105	import javax.jdo.Query;
16	torben	1093
17	torben	1110	import net.sf.jsr107cache.Cache;
18			import net.sf.jsr107cache.CacheException;
19			import net.sf.jsr107cache.CacheManager;
20
21			import com.google.appengine.api.memcache.jsr107cache.GCacheFactory;
22
23	torben	1061	import dk.thoerup.android.traininfo.common.StationBean;
24			import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
25	torben	1105	import dk.thoerup.traininfoservice.geo.Geo;
26	torben	1093	import dk.thoerup.traininfoservice.jdo.JdoStationBean;
27			import dk.thoerup.traininfoservice.jdo.PMF;
28	torben	1060
29	torben	588	public class StationDAO {
30	torben	997	final static int LOCATION_LIMIT = 8;
31	torben	895	static final Logger logger = Logger.getLogger(StationDAO.class.getName());
32	torben	1110
33	torben	1113	final int TIMEOUT_SECONDS = 30*60;
34	torben	1110
35			Cache cache;
36
37			public StationDAO() {
38			Map props = new HashMap();
39			props.put(GCacheFactory.EXPIRATION_DELTA, TIMEOUT_SECONDS);
40
41			try {
42			cache = CacheManager.getInstance().getCacheFactory().createCache(props);
43			} catch (CacheException e) {
44			logger.log(Level.WARNING, "error creating cache", e);
45			}
46
47			}
48	torben	836
49
50	torben	1105	public StationEntry getById(int id) {
51	torben	836
52	torben	1093	PersistenceManager pm = null;
53
54	torben	588	try {
55	torben	1093	pm = PMF.get().getPersistenceManager();
56	torben	1105	JdoStationBean bean =pm.getObjectById(JdoStationBean.class, new Integer(id) );
57			return bean.toStationEntry();
58	torben	588	} finally {
59	torben	1093	pm.close();
60	torben	588	}
61			}
62	torben	836
63	torben	1105	/* damn that JDO sucks so we to the filtering in java-code */
64			public StationBean getByName(String searchname) {
65			PersistenceManager pm = null;
66
67	torben	588	try {
68	torben	1110	/*pm = PMF.get().getPersistenceManager();
69	torben	1105
70
71
72			Query q = pm.newQuery(JdoStationBean.class);
73			q.setOrdering("name");
74	torben	1110	List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();*/
75	torben	1105
76	torben	1110	List<JdoStationBean> beanList = getAllStations();
77
78
79	torben	1105	StationBean stationBean = new StationBean();
80
81			searchname = searchname.toLowerCase();
82			for(JdoStationBean bean : beanList) {
83			if (bean.getName().toLowerCase().startsWith(searchname)) {
84			stationBean.entries.add( bean.toStationEntry() );
85			} else {
86			for (String alias : bean.aliases ) {
87			if (alias.toLowerCase().startsWith(searchname)) {
88			stationBean.entries.add( bean.toStationEntry() );
89			}
90			}
91			}
92			}
93	torben	836
94	torben	1105	return stationBean;
95	torben	588	} finally {
96	torben	1110	// pm.close();
97	torben	588	}
98			}
99	torben	1106
100	torben	1110	public List<JdoStationBean> getAllStations() {
101			final String key = "allstations";
102			List<JdoStationBean> result = (List<JdoStationBean>) cache.get(key);
103
104			if (result == null) {
105			logger.info("getAllStations Cache miss");
106
107			PersistenceManager pm = null;
108			final double LAT = 0.4;
109			final double LNG = 0.75;
110
111			try {
112			pm = PMF.get().getPersistenceManager();
113			Extent<JdoStationBean> all = pm.getExtent(JdoStationBean.class, false);
114
115			result = new ArrayList<JdoStationBean>();
116			for (JdoStationBean station : all) {
117			result.add(station);
118			}
119
120			cache.put(key, result);
121
122			} finally {
123			pm.close();
124			}
125			} else {
126			logger.info("getAllStations Cache hit");
127			}
128
129
130
131			return result;
132
133			}
134
135	torben	836
136	torben	1106	//String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
137	torben	1110	/*
138	torben	1106	public List<JdoStationBean> getByLocationList(double latitude, double longitude, boolean geolimit) {
139
140	torben	1105	PersistenceManager pm = null;
141	torben	1106	final double LAT = 0.4;
142			final double LNG = 0.75;
143	torben	841
144	torben	1105	try {
145			pm = PMF.get().getPersistenceManager();
146	torben	1106	Query q = pm.newQuery(JdoStationBean.class);
147	torben	1105
148
149	torben	1106
150			if (geolimit == true) {
151			double minLat = latitude - LAT;
152			double maxLat = latitude + LAT;
153
154			//DAMN JDO implementation only allows us to compare on one parameter
155	torben	849
156	torben	1106	String filter = String.format("latitude > %f && latitude < %f", minLat, maxLat);
157	torben	1105
158	torben	1106	q.setFilter( filter );
159	torben	841	}
160	torben	894
161	torben	1106	List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
162
163			logger.info("beanList size " + beanList.size());
164
165			return beanList;
166			} finally {
167			pm.close();
168			}
169	torben	1110	}*/
170	torben	836
171	torben	1106
172			public StationBean getByLocation(double latitude, double longitude) {
173	torben	1110	/*
174	torben	1106	List<JdoStationBean> beanList = getByLocationList(latitude,longitude,true);
175
176			if (beanList.size() < LOCATION_LIMIT ) {
177			logger.info("getByLocation failover: " +latitude + "," + longitude);
178			beanList = getByLocationList(latitude,longitude, false);
179	torben	1110	}*/
180
181			List<JdoStationBean> beanList = getAllStations();
182	torben	1106
183			StationBean stationBean = new StationBean();
184
185
186			Geo location = new Geo(latitude,longitude);
187			for(JdoStationBean bean : beanList) {
188			double meter = Geo.distanceKM( location, new Geo(bean.getLatitude(), bean.getLongitude() )) * 1000.0;
189
190			bean.distance = (int) meter;
191			}
192
193
194			Collections.sort(beanList, new Comparator<JdoStationBean>() {
195			@Override
196			public int compare(JdoStationBean o1, JdoStationBean o2) {
197			if (o1.distance < o2.distance) {
198			return -1;
199			} else if (o1.distance > o2.distance) {
200			return 1;
201			} else {
202			return 0;
203	torben	1105	}
204			}
205	torben	1106	});
206	torben	836
207	torben	1106	for (int i=0; i<LOCATION_LIMIT && i<beanList.size(); i++) {
208			stationBean.entries.add( beanList.get(i).toStationEntry() );
209	torben	836	}
210	torben	1106
211			return stationBean;
212	torben	836	}
213	torben	1105
214	torben	836
215	torben	1105	public StationBean getByList(String list) {
216			PersistenceManager pm = null;
217
218	torben	836	try {
219	torben	1105	String parts[] = list.split(",");
220
221			StringBuilder filter = new StringBuilder();
222
223			for(String part : parts) {
224			if (filter.length() > 0) {
225			filter.append( " \|\| " );
226			}
227			filter.append("id == ").append(part);
228			}
229
230			//String filter = "id == 10 \|\| id == 82"; //TODO: build filter
231
232			pm = PMF.get().getPersistenceManager();
233			Query q = pm.newQuery(JdoStationBean.class);
234			q.setFilter( filter.toString() );
235			q.setOrdering("name");
236
237			List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
238
239			StationBean stationBean = new StationBean();
240
241			for(JdoStationBean bean : beanList) {
242			stationBean.entries.add( bean.toStationEntry() );
243	torben	836	}
244
245	torben	1105	return stationBean;
246	torben	836	} finally {
247	torben	1105	pm.close();
248	torben	836	}
249	torben	650
250	torben	836	}
251	torben	650
252
253	torben	1105	public int getIdByName(String name) {
254
255			List<JdoStationBean> beanList = null;
256
257			PersistenceManager pm = null;
258
259	torben	836	try {
260	torben	1105
261			String filter = " name == '" + name + "'";
262
263			pm = PMF.get().getPersistenceManager();
264			Query q = pm.newQuery(JdoStationBean.class);
265			q.setFilter(filter);
266
267			beanList = (List<JdoStationBean>) q.execute();
268
269			StationBean stationBean = new StationBean();
270
271			for(JdoStationBean bean : beanList) {
272			stationBean.entries.add( bean.toStationEntry() );
273			}
274
275	torben	836	} finally {
276	torben	1105	pm.close();
277	torben	836	}
278
279	torben	1105	if ( beanList != null && beanList.size() == 1) {
280			return (int) beanList.get(0).getId();
281	torben	836	} else {
282			return -1;
283			}
284			}
285	torben	1105
286			@SuppressWarnings("unchecked")
287			public int saveStations(StationBean stationBean) throws IOException {
288			PersistenceManager pm = null;
289
290			try {
291			pm = PMF.get().getPersistenceManager();
292
293			List oldEntries = (List) pm.newQuery(JdoStationBean.class).execute();
294			pm.deletePersistentAll(oldEntries);
295
296			List<JdoStationBean> jdoList = new ArrayList<JdoStationBean>();
297			for (StationEntry station : stationBean.entries) {
298			JdoStationBean jdoBean = JdoStationBean.fromStationEntry(station);
299
300			jdoList.add(jdoBean);
301
302			}
303			pm.makePersistentAll(jdoList);
304
305			return jdoList.size();
306
307			} finally {
308			pm.close();
309			}
310			}
311
312	torben	588	}