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

                        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	package dk.thoerup.traininfoservice;
2
3	import java.io.IOException;
4	import java.util.ArrayList;
5	import java.util.Collections;
6	import java.util.Comparator;
7	import java.util.HashMap;
8	import java.util.List;
9	import java.util.Map;
10	import java.util.logging.Level;
11	import java.util.logging.Logger;
12
13	import javax.jdo.Extent;
14	import javax.jdo.PersistenceManager;
15	import javax.jdo.Query;
16
17	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	import dk.thoerup.android.traininfo.common.StationBean;
24	import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
25	import dk.thoerup.traininfoservice.geo.Geo;
26	import dk.thoerup.traininfoservice.jdo.JdoStationBean;
27	import dk.thoerup.traininfoservice.jdo.PMF;
28
29	public class StationDAO {
30	final static int LOCATION_LIMIT = 8;
31	static final Logger logger = Logger.getLogger(StationDAO.class.getName());
32
33	final int TIMEOUT_SECONDS = 30*60;
34
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
49
50	public StationEntry getById(int id) {
51
52	PersistenceManager pm = null;
53
54	try {
55	pm = PMF.get().getPersistenceManager();
56	JdoStationBean bean =pm.getObjectById(JdoStationBean.class, new Integer(id) );
57	return bean.toStationEntry();
58	} finally {
59	pm.close();
60	}
61	}
62
63	/* damn that JDO sucks so we to the filtering in java-code */
64	public StationBean getByName(String searchname) {
65	PersistenceManager pm = null;
66
67	try {
68	/*pm = PMF.get().getPersistenceManager();
69
70
71
72	Query q = pm.newQuery(JdoStationBean.class);
73	q.setOrdering("name");
74	List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();*/
75
76	List<JdoStationBean> beanList = getAllStations();
77
78
79	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
94	Collections.sort(stationBean.entries, new Comparator<StationEntry>() {
95	@Override
96	public int compare(StationEntry arg0, StationEntry arg1) {
97	return arg0.getName().compareTo( arg1.getName() );
98	}
99	});
100
101	return stationBean;
102	} finally {
103	// pm.close();
104	}
105	}
106
107	public List<JdoStationBean> getAllStations() {
108	final String key = "allstations";
109	List<JdoStationBean> result = (List<JdoStationBean>) cache.get(key);
110
111	if (result == null) {
112	logger.info("getAllStations Cache miss");
113
114	PersistenceManager pm = null;
115	final double LAT = 0.4;
116	final double LNG = 0.75;
117
118	try {
119	pm = PMF.get().getPersistenceManager();
120	Extent<JdoStationBean> all = pm.getExtent(JdoStationBean.class, false);
121
122	result = new ArrayList<JdoStationBean>();
123	for (JdoStationBean station : all) {
124	result.add(station);
125	}
126
127	cache.put(key, result);
128
129	} finally {
130	pm.close();
131	}
132	} else {
133	logger.info("getAllStations Cache hit");
134	}
135
136
137
138	return result;
139
140	}
141
142
143	//String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
144	/*
145	public List<JdoStationBean> getByLocationList(double latitude, double longitude, boolean geolimit) {
146
147	PersistenceManager pm = null;
148	final double LAT = 0.4;
149	final double LNG = 0.75;
150
151	try {
152	pm = PMF.get().getPersistenceManager();
153	Query q = pm.newQuery(JdoStationBean.class);
154
155
156
157	if (geolimit == true) {
158	double minLat = latitude - LAT;
159	double maxLat = latitude + LAT;
160
161	//DAMN JDO implementation only allows us to compare on one parameter
162
163	String filter = String.format("latitude > %f && latitude < %f", minLat, maxLat);
164
165	q.setFilter( filter );
166	}
167
168	List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
169
170	logger.info("beanList size " + beanList.size());
171
172	return beanList;
173	} finally {
174	pm.close();
175	}
176	}*/
177
178
179	public StationBean getByLocation(double latitude, double longitude) {
180	/*
181	List<JdoStationBean> beanList = getByLocationList(latitude,longitude,true);
182
183	if (beanList.size() < LOCATION_LIMIT ) {
184	logger.info("getByLocation failover: " +latitude + "," + longitude);
185	beanList = getByLocationList(latitude,longitude, false);
186	}*/
187
188	List<JdoStationBean> beanList = getAllStations();
189
190	StationBean stationBean = new StationBean();
191
192
193	Geo location = new Geo(latitude,longitude);
194	for(JdoStationBean bean : beanList) {
195	double meter = Geo.distanceKM( location, new Geo(bean.getLatitude(), bean.getLongitude() )) * 1000.0;
196
197	bean.distance = (int) meter;
198	}
199
200
201	Collections.sort(beanList, new Comparator<JdoStationBean>() {
202	@Override
203	public int compare(JdoStationBean o1, JdoStationBean o2) {
204	if (o1.distance < o2.distance) {
205	return -1;
206	} else if (o1.distance > o2.distance) {
207	return 1;
208	} else {
209	return 0;
210	}
211	}
212	});
213
214	for (int i=0; i<LOCATION_LIMIT && i<beanList.size(); i++) {
215	stationBean.entries.add( beanList.get(i).toStationEntry() );
216	}
217
218	return stationBean;
219	}
220
221
222	public StationBean getByList(String list) {
223	PersistenceManager pm = null;
224
225	try {
226	String parts[] = list.split(",");
227
228	StringBuilder filter = new StringBuilder();
229
230	for(String part : parts) {
231	if (filter.length() > 0) {
232	filter.append( " \|\| " );
233	}
234	filter.append("id == ").append(part);
235	}
236
237	//String filter = "id == 10 \|\| id == 82"; //TODO: build filter
238
239	pm = PMF.get().getPersistenceManager();
240	Query q = pm.newQuery(JdoStationBean.class);
241	q.setFilter( filter.toString() );
242	q.setOrdering("name");
243
244	List<JdoStationBean> beanList = (List<JdoStationBean>) q.execute();
245
246	StationBean stationBean = new StationBean();
247
248	for(JdoStationBean bean : beanList) {
249	stationBean.entries.add( bean.toStationEntry() );
250	}
251
252	return stationBean;
253	} finally {
254	pm.close();
255	}
256
257	}
258
259
260	public int getIdByName(String name) {
261
262	List<JdoStationBean> beanList = null;
263
264	PersistenceManager pm = null;
265
266	try {
267
268	String filter = " name == '" + name + "'";
269
270	pm = PMF.get().getPersistenceManager();
271	Query q = pm.newQuery(JdoStationBean.class);
272	q.setFilter(filter);
273
274	beanList = (List<JdoStationBean>) q.execute();
275
276	StationBean stationBean = new StationBean();
277
278	for(JdoStationBean bean : beanList) {
279	stationBean.entries.add( bean.toStationEntry() );
280	}
281
282
283	} finally {
284	pm.close();
285	}
286
287	if ( beanList != null && beanList.size() == 1) {
288	return (int) beanList.get(0).getId();
289	} else {
290	return -1;
291	}
292	}
293
294	@SuppressWarnings("unchecked")
295	public int saveStations(StationBean stationBean) throws IOException {
296	PersistenceManager pm = null;
297
298	try {
299	pm = PMF.get().getPersistenceManager();
300
301	List oldEntries = (List) pm.newQuery(JdoStationBean.class).execute();
302	pm.deletePersistentAll(oldEntries);
303
304	List<JdoStationBean> jdoList = new ArrayList<JdoStationBean>();
305	for (StationEntry station : stationBean.entries) {
306	JdoStationBean jdoBean = JdoStationBean.fromStationEntry(station);
307
308	jdoList.add(jdoBean);
309
310	}
311	pm.makePersistentAll(jdoList);
312
313	return jdoList.size();
314
315	} finally {
316	pm.close();
317	}
318	}
319
320	}