adressevedligehold/db/DatabaseCoverageUpdate.java

package dk.daoas.adressevedligehold.db;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;


import dk.daoas.adressevedligehold.beans.Address;
import dk.daoas.adressevedligehold.beans.Address.AddressState;
import dk.daoas.adressevedligehold.tasks.TaskLogger;
import dk.daoas.adressevedligehold.util.DeduplicateHelper;
import dk.daoas.adressevedligehold.util.TimingHelper;

/* 
 *  
 */

public class DatabaseCoverageUpdate  {
        
        //static boolean DEBUG = false;
        
        private TaskLogger logger = TaskLogger.getInstance();
        
        
        public List<Address> getAllAdresses() throws SQLException {
                TimingHelper timing = new TimingHelper();
                
                //String debugFilter = DatabaseLayerImplementation.DEBUG ? " WHERE postnr >= 6000 " : "";
                
                String sql = 
                                "SELECT id,vejnavn,husnr,husnrbogstav,kommunekode,vejkode,postnr,gadeid,upper(distributor) AS distributor,dbkbane,latitude,longitude, "
                                + "rutema,korelistema,ruteti,korelisteti,ruteon,korelisteon,ruteto,korelisteto,rutefr,korelistefr,rutelo,korelistelo,ruteso,korelisteso "
                                + "FROM fulddaekning.adressetabel "
                                //+ debugFilter
                                ;
                
                try ( Connection conn = DBConnection.getConnection();           
                                Statement stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
                                ) {
                        stmt.setFetchSize(Integer.MIN_VALUE);
                        ResultSet res = stmt.executeQuery(sql);
                        
                        List<Address> list = new ArrayList<Address>(2600000);//initial capacity 2.6 mio
                        
                        DeduplicateHelper<String> vejnavnCache = new DeduplicateHelper<String>(81920);
                        DeduplicateHelper<String> husnrbogstavCache = new DeduplicateHelper<String>();
                        DeduplicateHelper<String> distributorCache = new DeduplicateHelper<String>();
                        DeduplicateHelper<String> dirigeringsCache = new DeduplicateHelper<String>(16*1024);                    
        
                        
                        while (res.next()) {
                                
                                Address a = new Address();
                                a.id = res.getInt(1);
                                a.vejnavn = vejnavnCache.getInstance( res.getString(2) );
                                a.husnr = (short) res.getInt(3);
                                a.husnrbogstav = husnrbogstavCache.getInstance( res.getString(4) );
                                a.kommunekode = (short) res.getInt(5);
                                a.vejkode = (short)res.getInt(6);
                                a.postnr = (short)res.getInt(7);
                                a.gadeid = res.getInt(8);
                                a.distributor = distributorCache.getInstance(res.getString(9));
                                a.dbkBane = (short) res.getInt(10);
                                a.latitude = (float) res.getDouble(11);
                                a.longitude = (float) res.getDouble(12);
                                
                                a.ruteMandag = dirigeringsCache.getInstance( res.getString(13) );
                                a.korelisteMandag = dirigeringsCache.getInstance( res.getString(14) );
                                
                                a.ruteTirsdag = dirigeringsCache.getInstance( res.getString(15) );
                                a.korelisteTirsdag = dirigeringsCache.getInstance( res.getString(16) );                         

                                a.ruteOnsdag = dirigeringsCache.getInstance( res.getString(17) );
                                a.korelisteOnsdag = dirigeringsCache.getInstance( res.getString(18) );
                                
                                a.ruteTorsdag = dirigeringsCache.getInstance( res.getString(19) );
                                a.korelisteTorsdag = dirigeringsCache.getInstance( res.getString(20) );
                                
                                a.ruteFredag = dirigeringsCache.getInstance( res.getString(21) );
                                a.korelisteFredag = dirigeringsCache.getInstance( res.getString(22) );
                                
                                a.ruteLordag = dirigeringsCache.getInstance( res.getString(23) );
                                a.korelisteLordag = dirigeringsCache.getInstance( res.getString(24) );
                                
                                a.ruteSondag = dirigeringsCache.getInstance( res.getString(25) );
                                a.korelisteSondag = dirigeringsCache.getInstance( res.getString(26) );


                                list.add(a);
                        }
                        res.close();
                        
                        
                        logger.info("DB Loaded " + list.size() + " adresses in " + timing.getElapsed() + "ms");
                        
                        return list;
                }
        }
        
        public void saveNewAddresses(List<Address> addresses) {
                
                logger.info("DB::saveNewAddresses size:" + addresses.size() );
                
                String sql = "INSERT IGNORE INTO fulddaekning.adressetabel " +
                                         "(vejnavn,husnr,husnrbogstav,kommunekode,vejkode,postnr,gadeid,dbkbane,indlast,aendret,david,googlechecked," +
                                         "RuteMa,KorelisteMa,RuteTi,KorelisteTi,RuteOn,KorelisteOn,RuteTo,KorelisteTo,RuteFr,KorelisteFr,RuteLo,KorelisteLo,RuteSo,KorelisteSo, " +
                                         "kommentar,latitude,longitude) " +
                                         "VALUES " +
                                         "(?,?,?,?,?,?,?,?, now(), now(), ?, 0, " +
                                         "?,?,?,?,?,?,?,?,?,?,?,?,?,?," +
                                         "?,?,?) ";
                
                
                try (Connection con = DBConnection.getConnection()) {

                        
                        try (PreparedStatement stmt = con.prepareStatement(sql)) {
                                for (Address addr : addresses) {
                                        
                                        String david = String.format("%04d%03d%04d", addr.postnr, addr.kommunekode, addr.vejkode);
                                        
                                        stmt.setString(1, addr.vejnavn);
                                        stmt.setShort(2, addr.husnr);
                                        stmt.setString(3, addr.husnrbogstav);
                                        stmt.setShort(4, addr.kommunekode);
                                        stmt.setShort(5, addr.vejkode);
                                        stmt.setShort(6, addr.postnr);
                                        stmt.setInt(7, addr.gadeid);
                                        stmt.setShort(8, addr.dbkBane);
                                        stmt.setString(9, david);
                                        
                                        stmt.setString(10, addr.ruteMandag);
                                        stmt.setString(11, addr.korelisteMandag);
                                        stmt.setString(12, addr.ruteTirsdag);
                                        stmt.setString(13, addr.korelisteTirsdag);
                                        stmt.setString(14, addr.ruteOnsdag);
                                        stmt.setString(15, addr.korelisteOnsdag);
                                        stmt.setString(16, addr.ruteTorsdag);
                                        stmt.setString(17, addr.korelisteTorsdag);
                                        stmt.setString(18, addr.ruteFredag);
                                        stmt.setString(19, addr.korelisteFredag);
                                        stmt.setString(20, addr.ruteLordag);
                                        stmt.setString(21, addr.korelisteLordag);
                                        stmt.setString(22, addr.ruteSondag);
                                        stmt.setString(23, addr.korelisteSondag);
                                        
                                        stmt.setString(24, addr.kommentar);
                                        
                                        if (addr.latitude != 0.0) {
                                                stmt.setDouble(25, addr.latitude);
                                        } else {
                                                stmt.setNull(25, java.sql.Types.DOUBLE);
                                        }                                       
                                        if (addr.longitude != 0.0) {
                                                stmt.setDouble(26, addr.longitude);
                                        } else {
                                                stmt.setNull(26, java.sql.Types.DOUBLE);
                                        }

                                        
                                        stmt.execute();
                                        if (stmt.getUpdateCount() != 1) {
                                                logger.info("Error executing insert: " + addr);
                                                addr.state = AddressState.CREATE_FAIL;
                                        }
                                        
                                }
                        }
                        
                        //con.commit();
                } catch (SQLException e) {
                        logger.warning("Error inserting addresses", e  );
                }
        }
        
        public void updateAddresses(List<Address> addresses) {
                logger.info("DB::UpdateAddresses size:" + addresses.size() );
                
                /*String sql = "UPDATE fulddaekning.adressetabel " +
                                        "SET " +
                                        "RuteMa=?, KorelisteMa=?, " +
                                        "RuteTi=?, KorelisteTi=?, " +
                                        "RuteOn=?, KorelisteOn=?, " +
                                        "RuteTo=?, KorelisteTo=?, " +
                                        "RuteFr=?, KorelisteFr=?, " +
                                        "RuteLo=?, KorelisteLo=?, " +
                                        "RuteSo=?, KorelisteSo=?, " +
                                    "Distributor=?, " +
                                    "DBKBane=?, " +
                                    "Aendret=now() " +
                                        "WHERE id=? ";*/
                String sql = "INSERT INTO fulddaekning.adressetabel " +
                                        "(id, " +
                                        "RuteMa, KorelisteMa, RuteTi, KorelisteTi, RuteOn, KorelisteOn, " +
                                        "RuteTo, KorelisteTo, RuteFr, KorelisteFr, RuteLo, KorelisteLo, " +
                                        "RuteSo, KorelisteSo, " +
                                        "Distributor, DBKBane, Aendret, " +
                                        "vejnavn,husnr,husnrbogstav,kommunekode,vejkode,gadeid,postnr) \n" + //Disse har ingen default value
                                        "VALUES " +
                                        "(?," +
                                        "?,?,?,?,?,?," +
                                        "?,?,?,?,?,?," +
                                        "?,?," +
                                        "?,?, now(), " +
                                        "'',0,'',0,0,0,0 ) \n" +
                                        
                                        "ON DUPLICATE KEY UPDATE " +
                                        "RuteMa=VALUES(RuteMa), KorelisteMa=VALUES(KorelisteMa), " +
                                        "RuteTi=VALUES(RuteTi), KorelisteTi=VALUES(KorelisteTi), " +
                                        "RuteOn=VALUES(RuteOn), KorelisteOn=VALUES(KorelisteOn), " +
                                        "RuteTo=VALUES(RuteTo), KorelisteTo=VALUES(KorelisteTo), " +
                                        "RuteFr=VALUES(RuteFr), KorelisteFr=VALUES(KorelisteFr), " +
                                        "RuteLo=VALUES(RuteLo), KorelisteLo=VALUES(KorelisteLo), " +
                                        "RuteSo=VALUES(RuteSo), KorelisteSo=VALUES(KorelisteSo), " +
                                        "Distributor=VALUES(Distributor),  " +
                                        "DBKBane=VALUES(DBKBane)  ";
                                        
                                        
                try (Connection con = DBConnection.getConnection()) {
                        //con.setAutoCommit(false);
                        
                        try (PreparedStatement stmt = con.prepareStatement(sql)) {
                                int count = 0;
                                
                                for (Address addr : addresses) {
                                        stmt.setInt(1, addr.id);
                                        stmt.setString(2, addr.ruteMandag);
                                        stmt.setString(3, addr.korelisteMandag);
                                        stmt.setString(4, addr.ruteTirsdag);
                                        stmt.setString(5, addr.korelisteTirsdag);
                                        stmt.setString(6, addr.ruteOnsdag);
                                        stmt.setString(7, addr.korelisteOnsdag);
                                        stmt.setString(8, addr.ruteTorsdag);
                                        stmt.setString(9, addr.korelisteTorsdag);
                                        stmt.setString(10, addr.ruteFredag);
                                        stmt.setString(11, addr.korelisteFredag);
                                        stmt.setString(12, addr.ruteLordag);
                                        stmt.setString(13, addr.korelisteLordag);
                                        stmt.setString(14, addr.ruteSondag);
                                        stmt.setString(15, addr.korelisteSondag);

                                        stmt.setString(16, addr.distributor);
                                        stmt.setInt(17, addr.dbkBane);
                                        
                                        
                                        stmt.addBatch();
                                        count++;
                                        if ( (count%200) == 0) {
                                                stmt.executeBatch();
                                                
                                                if ( (count%50000) == 0 ) {
                                                        logger.info("Update count " + count);
                                                }
                                        }                                       
                                }
                                
                                stmt.executeBatch(); //update remainding queries
                                
                        }
                        
                        //con.commit();
                } catch (SQLException e) {
                        logger.warning("Error updating addresses", e );
                }
        }
        
        /*
        private static String nullify(String str) {
                if (str == null)
                        return null;
                
                if (str.equals("")) {
                        return null;
                } else {
                        return str;
                }
        }


        /*
        private static int safeInt(String str) {
                try {
                        return Integer.parseInt( str );
                } catch (NumberFormatException e) {
                        return 0;
                }
        }
        

        private static String coalesce(String s1, String s2) {
                if (s1 != null)
                        return s1;
                
                return s2;
        }

        */
}
1	package dk.daoas.adressevedligehold.db;
2
3	import java.sql.Connection;
4	import java.sql.PreparedStatement;
5	import java.sql.ResultSet;
6	import java.sql.SQLException;
7	import java.sql.Statement;
8	import java.util.ArrayList;
9	import java.util.List;
10
11
12
13	import dk.daoas.adressevedligehold.beans.Address;
14	import dk.daoas.adressevedligehold.beans.Address.AddressState;
15	import dk.daoas.adressevedligehold.tasks.TaskLogger;
16	import dk.daoas.adressevedligehold.util.DeduplicateHelper;
17	import dk.daoas.adressevedligehold.util.TimingHelper;
18
19	/*
20	*
21	*/
22
23	public class DatabaseCoverageUpdate {
24
25	//static boolean DEBUG = false;
26
27	private TaskLogger logger = TaskLogger.getInstance();
28
29
30	public List<Address> getAllAdresses() throws SQLException {
31	TimingHelper timing = new TimingHelper();
32
33	//String debugFilter = DatabaseLayerImplementation.DEBUG ? " WHERE postnr >= 6000 " : "";
34
35	String sql =
36	"SELECT id,vejnavn,husnr,husnrbogstav,kommunekode,vejkode,postnr,gadeid,upper(distributor) AS distributor,dbkbane,latitude,longitude, "
37	+ "rutema,korelistema,ruteti,korelisteti,ruteon,korelisteon,ruteto,korelisteto,rutefr,korelistefr,rutelo,korelistelo,ruteso,korelisteso "
38	+ "FROM fulddaekning.adressetabel "
39	//+ debugFilter
40	;
41
42	try ( Connection conn = DBConnection.getConnection();
43	Statement stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
44	) {
45	stmt.setFetchSize(Integer.MIN_VALUE);
46	ResultSet res = stmt.executeQuery(sql);
47
48	List<Address> list = new ArrayList<Address>(2600000);//initial capacity 2.6 mio
49
50	DeduplicateHelper<String> vejnavnCache = new DeduplicateHelper<String>(81920);
51	DeduplicateHelper<String> husnrbogstavCache = new DeduplicateHelper<String>();
52	DeduplicateHelper<String> distributorCache = new DeduplicateHelper<String>();
53	DeduplicateHelper<String> dirigeringsCache = new DeduplicateHelper<String>(16*1024);
54
55
56	while (res.next()) {
57
58	Address a = new Address();
59	a.id = res.getInt(1);
60	a.vejnavn = vejnavnCache.getInstance( res.getString(2) );
61	a.husnr = (short) res.getInt(3);
62	a.husnrbogstav = husnrbogstavCache.getInstance( res.getString(4) );
63	a.kommunekode = (short) res.getInt(5);
64	a.vejkode = (short)res.getInt(6);
65	a.postnr = (short)res.getInt(7);
66	a.gadeid = res.getInt(8);
67	a.distributor = distributorCache.getInstance(res.getString(9));
68	a.dbkBane = (short) res.getInt(10);
69	a.latitude = (float) res.getDouble(11);
70	a.longitude = (float) res.getDouble(12);
71
72	a.ruteMandag = dirigeringsCache.getInstance( res.getString(13) );
73	a.korelisteMandag = dirigeringsCache.getInstance( res.getString(14) );
74
75	a.ruteTirsdag = dirigeringsCache.getInstance( res.getString(15) );
76	a.korelisteTirsdag = dirigeringsCache.getInstance( res.getString(16) );
77
78	a.ruteOnsdag = dirigeringsCache.getInstance( res.getString(17) );
79	a.korelisteOnsdag = dirigeringsCache.getInstance( res.getString(18) );
80
81	a.ruteTorsdag = dirigeringsCache.getInstance( res.getString(19) );
82	a.korelisteTorsdag = dirigeringsCache.getInstance( res.getString(20) );
83
84	a.ruteFredag = dirigeringsCache.getInstance( res.getString(21) );
85	a.korelisteFredag = dirigeringsCache.getInstance( res.getString(22) );
86
87	a.ruteLordag = dirigeringsCache.getInstance( res.getString(23) );
88	a.korelisteLordag = dirigeringsCache.getInstance( res.getString(24) );
89
90	a.ruteSondag = dirigeringsCache.getInstance( res.getString(25) );
91	a.korelisteSondag = dirigeringsCache.getInstance( res.getString(26) );
92
93
94	list.add(a);
95	}
96	res.close();
97
98
99	logger.info("DB Loaded " + list.size() + " adresses in " + timing.getElapsed() + "ms");
100
101	return list;
102	}
103	}
104
105	public void saveNewAddresses(List<Address> addresses) {
106
107	logger.info("DB::saveNewAddresses size:" + addresses.size() );
108
109	String sql = "INSERT IGNORE INTO fulddaekning.adressetabel " +
110	"(vejnavn,husnr,husnrbogstav,kommunekode,vejkode,postnr,gadeid,dbkbane,indlast,aendret,david,googlechecked," +
111	"RuteMa,KorelisteMa,RuteTi,KorelisteTi,RuteOn,KorelisteOn,RuteTo,KorelisteTo,RuteFr,KorelisteFr,RuteLo,KorelisteLo,RuteSo,KorelisteSo, " +
112	"kommentar,latitude,longitude) " +
113	"VALUES " +
114	"(?,?,?,?,?,?,?,?, now(), now(), ?, 0, " +
115	"?,?,?,?,?,?,?,?,?,?,?,?,?,?," +
116	"?,?,?) ";
117
118
119	try (Connection con = DBConnection.getConnection()) {
120
121
122	try (PreparedStatement stmt = con.prepareStatement(sql)) {
123	for (Address addr : addresses) {
124
125	String david = String.format("%04d%03d%04d", addr.postnr, addr.kommunekode, addr.vejkode);
126
127	stmt.setString(1, addr.vejnavn);
128	stmt.setShort(2, addr.husnr);
129	stmt.setString(3, addr.husnrbogstav);
130	stmt.setShort(4, addr.kommunekode);
131	stmt.setShort(5, addr.vejkode);
132	stmt.setShort(6, addr.postnr);
133	stmt.setInt(7, addr.gadeid);
134	stmt.setShort(8, addr.dbkBane);
135	stmt.setString(9, david);
136
137	stmt.setString(10, addr.ruteMandag);
138	stmt.setString(11, addr.korelisteMandag);
139	stmt.setString(12, addr.ruteTirsdag);
140	stmt.setString(13, addr.korelisteTirsdag);
141	stmt.setString(14, addr.ruteOnsdag);
142	stmt.setString(15, addr.korelisteOnsdag);
143	stmt.setString(16, addr.ruteTorsdag);
144	stmt.setString(17, addr.korelisteTorsdag);
145	stmt.setString(18, addr.ruteFredag);
146	stmt.setString(19, addr.korelisteFredag);
147	stmt.setString(20, addr.ruteLordag);
148	stmt.setString(21, addr.korelisteLordag);
149	stmt.setString(22, addr.ruteSondag);
150	stmt.setString(23, addr.korelisteSondag);
151
152	stmt.setString(24, addr.kommentar);
153
154	if (addr.latitude != 0.0) {
155	stmt.setDouble(25, addr.latitude);
156	} else {
157	stmt.setNull(25, java.sql.Types.DOUBLE);
158	}
159	if (addr.longitude != 0.0) {
160	stmt.setDouble(26, addr.longitude);
161	} else {
162	stmt.setNull(26, java.sql.Types.DOUBLE);
163	}
164
165
166	stmt.execute();
167	if (stmt.getUpdateCount() != 1) {
168	logger.info("Error executing insert: " + addr);
169	addr.state = AddressState.CREATE_FAIL;
170	}
171
172	}
173	}
174
175	//con.commit();
176	} catch (SQLException e) {
177	logger.warning("Error inserting addresses", e );
178	}
179	}
180
181	public void updateAddresses(List<Address> addresses) {
182	logger.info("DB::UpdateAddresses size:" + addresses.size() );
183
184	/*String sql = "UPDATE fulddaekning.adressetabel " +
185	"SET " +
186	"RuteMa=?, KorelisteMa=?, " +
187	"RuteTi=?, KorelisteTi=?, " +
188	"RuteOn=?, KorelisteOn=?, " +
189	"RuteTo=?, KorelisteTo=?, " +
190	"RuteFr=?, KorelisteFr=?, " +
191	"RuteLo=?, KorelisteLo=?, " +
192	"RuteSo=?, KorelisteSo=?, " +
193	"Distributor=?, " +
194	"DBKBane=?, " +
195	"Aendret=now() " +
196	"WHERE id=? ";*/
197	String sql = "INSERT INTO fulddaekning.adressetabel " +
198	"(id, " +
199	"RuteMa, KorelisteMa, RuteTi, KorelisteTi, RuteOn, KorelisteOn, " +
200	"RuteTo, KorelisteTo, RuteFr, KorelisteFr, RuteLo, KorelisteLo, " +
201	"RuteSo, KorelisteSo, " +
202	"Distributor, DBKBane, Aendret, " +
203	"vejnavn,husnr,husnrbogstav,kommunekode,vejkode,gadeid,postnr) \n" + //Disse har ingen default value
204	"VALUES " +
205	"(?," +
206	"?,?,?,?,?,?," +
207	"?,?,?,?,?,?," +
208	"?,?," +
209	"?,?, now(), " +
210	"'',0,'',0,0,0,0 ) \n" +
211
212	"ON DUPLICATE KEY UPDATE " +
213	"RuteMa=VALUES(RuteMa), KorelisteMa=VALUES(KorelisteMa), " +
214	"RuteTi=VALUES(RuteTi), KorelisteTi=VALUES(KorelisteTi), " +
215	"RuteOn=VALUES(RuteOn), KorelisteOn=VALUES(KorelisteOn), " +
216	"RuteTo=VALUES(RuteTo), KorelisteTo=VALUES(KorelisteTo), " +
217	"RuteFr=VALUES(RuteFr), KorelisteFr=VALUES(KorelisteFr), " +
218	"RuteLo=VALUES(RuteLo), KorelisteLo=VALUES(KorelisteLo), " +
219	"RuteSo=VALUES(RuteSo), KorelisteSo=VALUES(KorelisteSo), " +
220	"Distributor=VALUES(Distributor), " +
221	"DBKBane=VALUES(DBKBane) ";
222
223
224
225
226	try (Connection con = DBConnection.getConnection()) {
227	//con.setAutoCommit(false);
228
229	try (PreparedStatement stmt = con.prepareStatement(sql)) {
230	int count = 0;
231
232	for (Address addr : addresses) {
233	stmt.setInt(1, addr.id);
234	stmt.setString(2, addr.ruteMandag);
235	stmt.setString(3, addr.korelisteMandag);
236	stmt.setString(4, addr.ruteTirsdag);
237	stmt.setString(5, addr.korelisteTirsdag);
238	stmt.setString(6, addr.ruteOnsdag);
239	stmt.setString(7, addr.korelisteOnsdag);
240	stmt.setString(8, addr.ruteTorsdag);
241	stmt.setString(9, addr.korelisteTorsdag);
242	stmt.setString(10, addr.ruteFredag);
243	stmt.setString(11, addr.korelisteFredag);
244	stmt.setString(12, addr.ruteLordag);
245	stmt.setString(13, addr.korelisteLordag);
246	stmt.setString(14, addr.ruteSondag);
247	stmt.setString(15, addr.korelisteSondag);
248
249	stmt.setString(16, addr.distributor);
250	stmt.setInt(17, addr.dbkBane);
251
252
253
254	stmt.addBatch();
255	count++;
256	if ( (count%200) == 0) {
257	stmt.executeBatch();
258
259	if ( (count%50000) == 0 ) {
260	logger.info("Update count " + count);
261	}
262	}
263	}
264
265	stmt.executeBatch(); //update remainding queries
266
267	}
268
269	//con.commit();
270	} catch (SQLException e) {
271	logger.warning("Error updating addresses", e );
272	}
273	}
274
275	/*
276	private static String nullify(String str) {
277	if (str == null)
278	return null;
279
280	if (str.equals("")) {
281	return null;
282	} else {
283	return str;
284	}
285	}
286
287
288	/*
289	private static int safeInt(String str) {
290	try {
291	return Integer.parseInt( str );
292	} catch (NumberFormatException e) {
293	return 0;
294	}
295	}
296
297
298
299	private static String coalesce(String s1, String s2) {
300	if (s1 != null)
301	return s1;
302
303	return s2;
304	}
305
306	*/
307	}