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	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.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	@SuppressWarnings("unchecked")
38	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
50
51	public StationEntry getById(int id) {
52
53	PersistenceManager pm = null;
54
55	try {
56	pm = PMF.get().getPersistenceManager();
57	JdoStationBean bean =pm.getObjectById(JdoStationBean.class, new Integer(id) );
58	return bean.toStationEntry();
59	} finally {
60	pm.close();
61	}
62	}
63
64	/* damn that JDO sucks so we to the filtering in java-code */
65	public StationBean getByName(String searchname) {
66
67	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	} /*else {
77	for (String alias : bean.aliases ) {
78	if (alias.toLowerCase().startsWith(searchname)) {
79	stationBean.entries.add( bean.toStationEntry() );
80	}
81	}
82	}*/
83	}
84
85	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	}
95
96	@SuppressWarnings("unchecked")
97	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
131	//String limitExpression = (geolimit == true) ? "AND abs(latitude-?)<0.4 AND abs(longitude-?)<0.75 " : "";
132	/*
133	public List<JdoStationBean> getByLocationList(double latitude, double longitude, boolean geolimit) {
134
135	PersistenceManager pm = null;
136	final double LAT = 0.4;
137	final double LNG = 0.75;
138
139	try {
140	pm = PMF.get().getPersistenceManager();
141	Query q = pm.newQuery(JdoStationBean.class);
142
143
144
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
151	String filter = String.format("latitude > %f && latitude < %f", minLat, maxLat);
152
153	q.setFilter( filter );
154	}
155
156	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	}*/
165
166
167	public StationBean getByLocation(double latitude, double longitude) {
168
169	List<JdoStationBean> beanList = getAllStations();
170
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	}
192	}
193	});
194
195	for (int i=0; i<LOCATION_LIMIT && i<beanList.size(); i++) {
196	stationBean.entries.add( beanList.get(i).toStationEntry() );
197	}
198
199	return stationBean;
200	}
201
202
203	@SuppressWarnings("unchecked")
204	public StationBean getByList(String list) {
205	PersistenceManager pm = null;
206
207	try {
208	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	}
232
233	return stationBean;
234	} finally {
235	pm.close();
236	}
237
238	}
239
240
241	@SuppressWarnings("unchecked")
242	public int getIdByName(String name) {
243
244	List<JdoStationBean> beanList = null;
245
246	PersistenceManager pm = null;
247
248	try {
249
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	}
263
264
265	} finally {
266	pm.close();
267	}
268
269	if ( beanList != null && beanList.size() == 1) {
270	return (int) beanList.get(0).getId();
271	} else {
272	return -1;
273	}
274	}
275
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	}