Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/ImportMeasurementStation.java @ 4193:f63b39799d2d

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Adapted DB schema (added relation measurement_station); improved importer to read files from filesystem with measurement stations.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 22 Oct 2012 09:02:26 +0200
parents
children 4ee97d914501
rev   line source
4193
f63b39799d2d Adapted DB schema (added relation measurement_station); improved importer to read files from filesystem with measurement stations.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.importer;
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2
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3 import java.sql.SQLException;
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4 import java.util.List;
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5
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6 import org.apache.log4j.Logger;
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7 import org.hibernate.Session;
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8 import org.hibernate.exception.ConstraintViolationException;
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9
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10 import de.intevation.flys.model.Gauge;
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11 import de.intevation.flys.model.MeasurementStation;
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12 import de.intevation.flys.model.Range;
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13 import de.intevation.flys.model.River;
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14 import de.intevation.flys.model.TimeInterval;
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15
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16
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17 public class ImportMeasurementStation {
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18
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19 private static final Logger log = Logger
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20 .getLogger(ImportMeasurementStation.class);
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21
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22 private MeasurementStation peer;
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23
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24 public String name;
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25 public Double station;
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26 public ImportRange range;
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27 public String measurementType;
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28 public String riverside;
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29 public String gauge;
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30 public ImportTimeInterval observationTimerange;
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31 public String operator;
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32 public String comment;
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33
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34 public ImportMeasurementStation() {
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35 }
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36
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37 private Gauge getGaugeFromDB() {
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38 Session session = ImporterSession.getInstance().getDatabaseSession();
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39
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40 org.hibernate.Query query = session
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41 .createQuery("FROM Gauge WHERE name=:name");
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42
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43 query.setParameter("name", gauge);
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44 List<Gauge> gauges = query.list();
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45
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46 return gauges.isEmpty() ? null : gauges.get(0);
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47 }
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48
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49 public boolean storeDependencies(River river) throws SQLException,
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50 ConstraintViolationException {
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51 getPeer(river);
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52
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53 return peer != null;
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54 }
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55
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56 public Object getPeer(River river) {
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57 if (peer == null) {
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58 Gauge gauge = null;
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59 try {
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60 gauge = getGaugeFromDB();
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61 if (gauge == null) {
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62 log.warn("Skip measurement station '" + name
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63 + "': unable to find gauge with name '" + this.gauge
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64 + "'");
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65 return null;
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66 }
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67 }
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68 catch (Exception e) {
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69 log.error("Exception: " + e.getMessage());
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70 }
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71
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72 Range range = this.range.getPeer(river);
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73 if (range == null) {
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74 log.warn("Skip measurement station '" + name
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75 + "': unable to get range");
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76 return null;
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77 }
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78
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79 TimeInterval observationTimerange = this.observationTimerange
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80 .getPeer();
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81 if (observationTimerange == null) {
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82 log.warn("Skip measurement station '" + name
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83 + "': unable to get time interval for observation time");
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84 return null;
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85 }
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86
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87 Session session = ImporterSession.getInstance()
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88 .getDatabaseSession();
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89
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90 org.hibernate.Query query = session
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91 .createQuery("FROM MeasurementStation "
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92 + " WHERE river=:river AND station=:station");
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93
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94 query.setParameter("river", river);
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95 query.setParameter("station", station);
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96
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97 List<MeasurementStation> stations = query.list();
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98
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99 if (stations.isEmpty()) {
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100 log.info("create new measurement station '" + name + "'");
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101
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102 peer = new MeasurementStation(river, name, measurementType,
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103 riverside, station, range, gauge, observationTimerange,
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104 operator, comment);
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105
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106 session.save(peer);
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107 }
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108 }
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109
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110 return peer;
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111 }
f63b39799d2d Adapted DB schema (added relation measurement_station); improved importer to read files from filesystem with measurement stations.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
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