Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/MeasurementFactory.java @ 3289:ec9aab93f292
SQ: First peek into fetching relevant data from SedDB
flys-artifacts/trunk@4957 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Thu, 12 Jul 2012 16:15:30 +0000 |
| parents | |
| children | 36f3b53d5cfc |
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| 3288:cf1b769190b7 | 3289:ec9aab93f292 |
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| 1 package de.intevation.flys.artifacts.model.sq; | |
| 2 | |
| 3 import de.intevation.flys.artifacts.model.DateRange; | |
| 4 | |
| 5 import de.intevation.flys.backend.SedDBSessionHolder; | |
| 6 | |
| 7 import java.util.HashMap; | |
| 8 import java.util.List; | |
| 9 import java.util.Map; | |
| 10 | |
| 11 import org.apache.log4j.Logger; | |
| 12 | |
| 13 import org.hibernate.SQLQuery; | |
| 14 import org.hibernate.Session; | |
| 15 | |
| 16 import org.hibernate.transform.BasicTransformerAdapter; | |
| 17 | |
| 18 import org.hibernate.type.StandardBasicTypes; | |
| 19 | |
| 20 public class MeasurementFactory | |
| 21 { | |
| 22 private static final Logger log = | |
| 23 Logger.getLogger(MeasurementFactory.class); | |
| 24 | |
| 25 public static final String SQL_MEASSURE = | |
| 26 "SELECT " + | |
| 27 "m.TSAND AS TSAND," + | |
| 28 "m.TSCHWEB AS TSCHWEB," + | |
| 29 "m.CSCHWEB AS CSCHWEB " + | |
| 30 /* TODO: Select more */ | |
| 31 "FROM messung m " + | |
| 32 "JOIN station s ON m.stationid = s.stationid " + | |
| 33 "JOIN gewaesser g ON s.gewaesserid = g.gewaesserid " + | |
| 34 "WHERE " + | |
| 35 "g.name = :river_name AND " + | |
| 36 "s.km BETWEEN :location - 0.001 AND :location + 0.001 AND " + | |
| 37 "m.datum BETWEEN :from AND :to"; | |
| 38 | |
| 39 public static final class MeasurementResultTransformer | |
| 40 extends BasicTransformerAdapter | |
| 41 { | |
| 42 public static MeasurementResultTransformer INSTANCE = | |
| 43 new MeasurementResultTransformer(); | |
| 44 | |
| 45 public MeasurementResultTransformer() { | |
| 46 } | |
| 47 | |
| 48 @Override | |
| 49 public Object transformTuple(Object [] tuple, String [] aliases) { | |
| 50 Map<String, Object> map = new HashMap<String, Object>(); | |
| 51 for (int i = 0; i < tuple.length; ++i) { | |
| 52 map.put(aliases[i], tuple[i]); | |
| 53 } | |
| 54 return new Measurement(map); | |
| 55 } | |
| 56 } // class BasicTransformerAdapter | |
| 57 | |
| 58 private MeasurementFactory() { | |
| 59 } | |
| 60 | |
| 61 protected static List<Measurement> load( | |
| 62 Session session, | |
| 63 String river, | |
| 64 double location, | |
| 65 DateRange dateRange | |
| 66 ) { | |
| 67 SQLQuery query = session.createSQLQuery(SQL_MEASSURE) | |
| 68 .addScalar("TSAND", StandardBasicTypes.DOUBLE) | |
| 69 .addScalar("TSCHWEB", StandardBasicTypes.DOUBLE) | |
| 70 .addScalar("CSCHWEB", StandardBasicTypes.DOUBLE); | |
| 71 | |
| 72 query.setString("river_name", river); | |
| 73 query.setDouble("location", location); | |
| 74 query.setDate("from", dateRange.getFrom()); | |
| 75 query.setDate("to", dateRange.getTo()); | |
| 76 | |
| 77 query.setResultTransformer(MeasurementResultTransformer.INSTANCE); | |
| 78 | |
| 79 return query.list(); | |
| 80 } | |
| 81 | |
| 82 public static List<Measurement> getMeasurements( | |
| 83 String river, | |
| 84 double location, | |
| 85 DateRange dateRange | |
| 86 ) { | |
| 87 Session session = SedDBSessionHolder.HOLDER.get(); | |
| 88 try { | |
| 89 return load(session, river, location, dateRange); | |
| 90 } | |
| 91 finally { | |
| 92 session.close(); | |
| 93 } | |
| 94 } | |
| 95 } | |
| 96 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |