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.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;
        
        @SuppressWarnings("unchecked")
        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) {
                        
                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() );
                                        }
                                }
                        }*/
                }

                Collections.sort(stationBean.entries, new Comparator<StationEntry>() {
                        @Override
                        public int compare(StationEntry arg0, StationEntry arg1) {
                                return arg0.getName().compareTo( arg1.getName() );
                        }                               
                });

                return stationBean;                     

        }
        
        @SuppressWarnings("unchecked")
        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;
                        
                        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 = 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;                     
        }
        

        @SuppressWarnings("unchecked")
        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);
                        }                       
                        
                        
                        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();
                }

        }


        @SuppressWarnings("unchecked")
        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	torben	1415	import dk.thoerup.android.traininfo.common.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	torben	1116	@SuppressWarnings("unchecked")
38	torben	1110	public StationDAO() {
39			Map props = new HashMap();
40			props.put(GCacheFactory.EXPIRATION_DELTA, TIMEOUT_SECONDS);
41
42			try {
43			cache = CacheManager.getInstance().getCacheFactory().createCache(props);
44			} catch (CacheException e) {
45			logger.log(Level.WARNING, "error creating cache", e);
46			}
47
48			}
49	torben	836
50
51	torben	1105	public StationEntry getById(int id) {
52	torben	836
53	torben	1093	PersistenceManager pm = null;
54
55	torben	588	try {
56	torben	1093	pm = PMF.get().getPersistenceManager();
57	torben	1105	JdoStationBean bean =pm.getObjectById(JdoStationBean.class, new Integer(id) );
58			return bean.toStationEntry();
59	torben	588	} finally {
60	torben	1093	pm.close();
61	torben	588	}
62			}
63	torben	836
64	torben	1105	/* damn that JDO sucks so we to the filtering in java-code */
65			public StationBean getByName(String searchname) {
66
67	torben	1116	List<JdoStationBean> beanList = getAllStations();
68
69
70			StationBean stationBean = new StationBean();
71
72			searchname = searchname.toLowerCase();
73			for(JdoStationBean bean : beanList) {
74			if (bean.getName().toLowerCase().startsWith(searchname)) {
75			stationBean.entries.add( bean.toStationEntry() );
76	torben	1703	} /*else {
77	torben	1116	for (String alias : bean.aliases ) {
78			if (alias.toLowerCase().startsWith(searchname)) {
79			stationBean.entries.add( bean.toStationEntry() );
80	torben	1105	}
81			}
82	torben	1703	}*/
83	torben	1116	}
84	torben	836
85	torben	1116	Collections.sort(stationBean.entries, new Comparator<StationEntry>() {
86			@Override
87			public int compare(StationEntry arg0, StationEntry arg1) {
88			return arg0.getName().compareTo( arg1.getName() );
89			}
90			});
91
92			return stationBean;
93
94	torben	588	}
95	torben	1106
96	torben	1116	@SuppressWarnings("unchecked")
97	torben	1110	public List<JdoStationBean> getAllStations() {
98			final String key = "allstations";
99			List<JdoStationBean> result = (List<JdoStationBean>) cache.get(key);
100
101			if (result == null) {
102			logger.info("getAllStations Cache miss");
103
104			PersistenceManager pm = null;
105
106			try {
107			pm = PMF.get().getPersistenceManager();
108			Extent<JdoStationBean> all = pm.getExtent(JdoStationBean.class, false);
109
110			result = new ArrayList<JdoStationBean>();
111			for (JdoStationBean station : all) {
112			result.add(station);
113			}
114
115			cache.put(key, result);
116
117			} finally {
118			pm.close();
119			}
120			} else {
121			logger.info("getAllStations Cache hit");
122			}
123
124
125
126			return result;
127
128			}
129
130	torben	836
131	torben	1106	//String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
132	torben	1110	/*
133	torben	1106	public List<JdoStationBean> getByLocationList(double latitude, double longitude, boolean geolimit) {
134
135	torben	1105	PersistenceManager pm = null;
136	torben	1106	final double LAT = 0.4;
137			final double LNG = 0.75;
138	torben	841
139	torben	1105	try {
140			pm = PMF.get().getPersistenceManager();
141	torben	1106	Query q = pm.newQuery(JdoStationBean.class);
142	torben	1105
143
144	torben	1106
145			if (geolimit == true) {
146			double minLat = latitude - LAT;
147			double maxLat = latitude + LAT;
148
149			//DAMN JDO implementation only allows us to compare on one parameter
150	torben	849
151	torben	1106	String filter = String.format("latitude > %f && latitude < %f", minLat, maxLat);
152	torben	1105
153	torben	1106	q.setFilter( filter );
154	torben	841	}
155	torben	894
156	torben	1106	List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
157
158			logger.info("beanList size " + beanList.size());
159
160			return beanList;
161			} finally {
162			pm.close();
163			}
164	torben	1110	}*/
165	torben	836
166	torben	1106
167			public StationBean getByLocation(double latitude, double longitude) {
168
169	torben	1110	List<JdoStationBean> beanList = getAllStations();
170	torben	1106
171			StationBean stationBean = new StationBean();
172
173
174			Geo location = new Geo(latitude,longitude);
175			for(JdoStationBean bean : beanList) {
176			double meter = Geo.distanceKM( location, new Geo(bean.getLatitude(), bean.getLongitude() )) * 1000.0;
177
178			bean.distance = (int) meter;
179			}
180
181
182			Collections.sort(beanList, new Comparator<JdoStationBean>() {
183			@Override
184			public int compare(JdoStationBean o1, JdoStationBean o2) {
185			if (o1.distance < o2.distance) {
186			return -1;
187			} else if (o1.distance > o2.distance) {
188			return 1;
189			} else {
190			return 0;
191	torben	1105	}
192			}
193	torben	1106	});
194	torben	836
195	torben	1106	for (int i=0; i<LOCATION_LIMIT && i<beanList.size(); i++) {
196			stationBean.entries.add( beanList.get(i).toStationEntry() );
197	torben	836	}
198	torben	1106
199			return stationBean;
200	torben	836	}
201	torben	1105
202	torben	836
203	torben	1116	@SuppressWarnings("unchecked")
204	torben	1105	public StationBean getByList(String list) {
205			PersistenceManager pm = null;
206
207	torben	836	try {
208	torben	1105	String parts[] = list.split(",");
209
210			StringBuilder filter = new StringBuilder();
211
212			for(String part : parts) {
213			if (filter.length() > 0) {
214			filter.append( " \|\| " );
215			}
216			filter.append("id == ").append(part);
217			}
218
219
220			pm = PMF.get().getPersistenceManager();
221			Query q = pm.newQuery(JdoStationBean.class);
222			q.setFilter( filter.toString() );
223			q.setOrdering("name");
224
225			List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
226
227			StationBean stationBean = new StationBean();
228
229			for(JdoStationBean bean : beanList) {
230			stationBean.entries.add( bean.toStationEntry() );
231	torben	836	}
232
233	torben	1105	return stationBean;
234	torben	836	} finally {
235	torben	1105	pm.close();
236	torben	836	}
237	torben	650
238	torben	836	}
239	torben	650
240
241	torben	1116	@SuppressWarnings("unchecked")
242	torben	1105	public int getIdByName(String name) {
243
244			List<JdoStationBean> beanList = null;
245
246			PersistenceManager pm = null;
247
248	torben	836	try {
249	torben	1105
250			String filter = " name == '" + name + "'";
251
252			pm = PMF.get().getPersistenceManager();
253			Query q = pm.newQuery(JdoStationBean.class);
254			q.setFilter(filter);
255
256			beanList = (List<JdoStationBean>) q.execute();
257
258			StationBean stationBean = new StationBean();
259
260			for(JdoStationBean bean : beanList) {
261			stationBean.entries.add( bean.toStationEntry() );
262	torben	1115	}
263	torben	1105
264	torben	1115
265	torben	836	} finally {
266	torben	1105	pm.close();
267	torben	836	}
268
269	torben	1105	if ( beanList != null && beanList.size() == 1) {
270			return (int) beanList.get(0).getId();
271	torben	836	} else {
272			return -1;
273			}
274			}
275	torben	1105
276			@SuppressWarnings("unchecked")
277			public int saveStations(StationBean stationBean) throws IOException {
278			PersistenceManager pm = null;
279
280			try {
281			pm = PMF.get().getPersistenceManager();
282
283			List oldEntries = (List) pm.newQuery(JdoStationBean.class).execute();
284			pm.deletePersistentAll(oldEntries);
285
286			List<JdoStationBean> jdoList = new ArrayList<JdoStationBean>();
287			for (StationEntry station : stationBean.entries) {
288			JdoStationBean jdoBean = JdoStationBean.fromStationEntry(station);
289
290			jdoList.add(jdoBean);
291
292			}
293			pm.makePersistentAll(jdoList);
294
295			return jdoList.size();
296
297			} finally {
298			pm.close();
299			}
300			}
301
302	torben	588	}