Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/MeasurementFactory.java @ 3291:b52c4b34ec1b
SQ relation: Do not store null values from database.
flys-artifacts/trunk@4959 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Thu, 12 Jul 2012 20:29:05 +0000 |
parents | 36f3b53d5cfc |
children | e06036fdf0c7 |
rev | line source |
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1 package de.intevation.flys.artifacts.model.sq; |
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2 |
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3 import de.intevation.flys.artifacts.model.DateRange; |
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4 |
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5 import de.intevation.flys.backend.SedDBSessionHolder; |
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6 |
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7 import java.util.HashMap; |
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8 import java.util.Map; |
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9 |
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10 import org.apache.log4j.Logger; |
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11 |
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12 import org.hibernate.SQLQuery; |
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13 import org.hibernate.Session; |
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14 |
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15 import org.hibernate.transform.BasicTransformerAdapter; |
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16 |
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17 import org.hibernate.type.StandardBasicTypes; |
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18 |
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19 public class MeasurementFactory |
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20 { |
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21 private static final Logger log = |
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22 Logger.getLogger(MeasurementFactory.class); |
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23 |
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24 public static final String SQL_MEASSURE = |
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25 "SELECT " + |
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26 "m.TSAND AS TSAND," + |
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27 "m.TSCHWEB AS TSCHWEB," + |
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28 "m.CSCHWEB AS CSCHWEB " + |
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29 "m.Q AS Q " + |
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30 /* TODO: Select more */ |
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31 "FROM messung m " + |
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32 "JOIN station s ON m.stationid = s.stationid " + |
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33 "JOIN gewaesser g ON s.gewaesserid = g.gewaesserid " + |
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34 "WHERE " + |
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35 "g.name = :river_name AND " + |
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36 "s.km BETWEEN :location - 0.001 AND :location + 0.001 AND " + |
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37 "m.datum BETWEEN :from AND :to AND " + |
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38 "m.Q IS NOT NULL"; |
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39 |
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40 public static final class MeasurementResultTransformer |
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41 extends BasicTransformerAdapter |
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42 { |
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43 public static MeasurementResultTransformer INSTANCE = |
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44 new MeasurementResultTransformer(); |
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45 |
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46 public MeasurementResultTransformer() { |
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47 } |
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48 |
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49 @Override |
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50 public Object transformTuple(Object [] tuple, String [] aliases) { |
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51 Map<String, Object> map = new HashMap<String, Object>(); |
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52 for (int i = 0; i < tuple.length; ++i) { |
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53 if (tuple[i] != null) { |
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54 map.put(aliases[i], tuple[i]); |
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55 } |
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56 } |
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57 return new Measurement(map); |
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58 } |
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59 } // class BasicTransformerAdapter |
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60 |
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61 private MeasurementFactory() { |
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62 } |
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63 |
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64 protected static Measurements load( |
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65 Session session, |
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66 String river, |
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67 double location, |
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68 DateRange dateRange |
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69 ) { |
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70 SQLQuery query = session.createSQLQuery(SQL_MEASSURE) |
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71 .addScalar("TSAND", StandardBasicTypes.DOUBLE) |
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72 .addScalar("TSCHWEB", StandardBasicTypes.DOUBLE) |
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73 .addScalar("CSCHWEB", StandardBasicTypes.DOUBLE) |
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74 .addScalar("Q", StandardBasicTypes.DOUBLE); |
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75 |
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76 query.setString("river_name", river); |
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77 query.setDouble("location", location); |
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78 query.setDate("from", dateRange.getFrom()); |
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79 query.setDate("to", dateRange.getTo()); |
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80 |
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81 query.setResultTransformer(MeasurementResultTransformer.INSTANCE); |
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82 |
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83 return new Measurements(query.list()); |
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84 } |
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85 |
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86 public static Measurements getMeasurements( |
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87 String river, |
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88 double location, |
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89 DateRange dateRange |
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90 ) { |
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91 Session session = SedDBSessionHolder.HOLDER.get(); |
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92 try { |
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93 return load(session, river, location, dateRange); |
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94 } |
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95 finally { |
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96 session.close(); |
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97 } |
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98 } |
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99 } |
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100 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |