Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/DischargeTables.java @ 294:e5e7af208857

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Added an OutGenerator interface that might be used to generator collected outputs of a set of artifacts. flys-artifacts/trunk@1632 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 31 Mar 2011 10:54:07 +0000
parents 03362976fa0f
children ea3a438a7021
rev   line source
146
e8dfe6ba2000 Fetch w/q values of discharge tables for given gauges.
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1 package de.intevation.flys.artifacts.model;
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2
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3 import java.util.List;
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4 import java.util.Map;
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5 import java.util.HashMap;
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6 import java.util.Arrays;
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7
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8 import java.io.Serializable;
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9
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10 import org.hibernate.SessionFactory;
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11 import org.hibernate.Session;
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12 import org.hibernate.Query;
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13
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14 import org.apache.log4j.Logger;
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16 import de.intevation.flys.backend.SessionFactoryProvider;
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18 import de.intevation.flys.model.Gauge;
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19 import de.intevation.flys.model.DischargeTable;
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20 import de.intevation.flys.model.DischargeTableValue;
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21
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22 public class DischargeTables
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23 implements Serializable
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24 {
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25 private static Logger log = Logger.getLogger(DischargeTables.class);
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26
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27 protected List<String> gaugeNames;
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29 protected String riverName;
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30
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31 protected double scale;
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32
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33 protected Map<String, double [][]> values;
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34
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35 public DischargeTables() {
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36 }
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38 public DischargeTables(String riverName, String [] gaugeNames) {
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39 this(riverName, Arrays.asList(gaugeNames));
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40 }
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41
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42 public DischargeTables(String riverName, List<String> gaugeNames) {
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43 scale = Double.NaN;
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44 this.riverName = riverName;
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45 this.gaugeNames = gaugeNames;
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46 }
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47
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48 public Map<String, double [][]> getValues(double scale) {
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49 if (values == null || scale != this.scale) {
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50 values = loadValues(scale);
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51 this.scale = scale;
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52 }
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53 return values;
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54 }
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55
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56 protected Map<String, double [][]> loadValues(double scale) {
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57 Map<String, double [][]> values = new HashMap<String, double [][]>();
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58
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59 SessionFactory sf = SessionFactoryProvider.getSessionFactory();
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60 Session session = sf.openSession();
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61
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62 try {
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63 Query gaugeQuery = session.createQuery(
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64 "from Gauge where name=:gauge and river.name=:river");
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65 gaugeQuery.setParameter("river", riverName);
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66
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67 for (String gaugeName: gaugeNames) {
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68 gaugeQuery.setParameter("gauge", gaugeName);
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69 List<Gauge> gauges = gaugeQuery.list();
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70 if (gauges.isEmpty()) {
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71 log.warn(
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72 "no gauge '"+gaugeName+"' at river '"+riverName+"'");
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73 continue;
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74 }
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75 Gauge gauge = gauges.get(0);
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77 List<DischargeTable> tables = gauge.getDischargeTables();
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78
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79 if (tables.isEmpty()) {
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80 log.warn(
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81 "no discharge table for gauge '" + gaugeName + "'");
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82 continue;
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83 }
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84
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85 // TODO: Filter by time interval
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86 DischargeTable table = tables.get(0);
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87
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88 List<DischargeTableValue> dtvs =
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89 table.getDischargeTableValues();
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90
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91 double [][] vs = new double[2][dtvs.size()];
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92
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93 int idx = 0;
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94 for (DischargeTableValue dtv: dtvs) {
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95 vs[0][idx] = dtv.getQ().doubleValue() * scale;
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96 vs[1][idx] = dtv.getW().doubleValue() * scale;
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97 ++idx;
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98 }
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99
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100 values.put(gaugeName, vs);
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101 }
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102
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103 return values;
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104 }
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105 finally {
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106 session.close();
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107 }
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108 }
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109 }
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110 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org