Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/DischargeTables.java @ 326:07eba6d3b4a5

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Fetches w/q value tables from the backend. flys-artifacts/trunk@1722 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 18 Apr 2011 14:40:35 +0000
parents 94c176fdcb89
children 07e642030172
rev   line source
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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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10 import org.hibernate.Session;
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11 import org.hibernate.Query;
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13 import org.apache.log4j.Logger;
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15 import de.intevation.flys.backend.SessionHolder;
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16 import de.intevation.flys.model.Gauge;
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17 import de.intevation.flys.model.DischargeTable;
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18 import de.intevation.flys.model.DischargeTableValue;
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20 public class DischargeTables
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21 implements Serializable
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22 {
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23 private static Logger log = Logger.getLogger(DischargeTables.class);
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24
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25 protected List<String> gaugeNames;
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27 protected String riverName;
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29 protected double scale;
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31 protected Map<String, double [][]> values;
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32
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33 public DischargeTables() {
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34 }
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36 public DischargeTables(String riverName, String [] gaugeNames) {
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37 this(riverName, Arrays.asList(gaugeNames));
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38 }
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40 public DischargeTables(String riverName, List<String> gaugeNames) {
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41 scale = Double.NaN;
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42 this.riverName = riverName;
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43 this.gaugeNames = gaugeNames;
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44 }
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45
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46 public Map<String, double [][]> getValues(double scale) {
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47 if (values == null || scale != this.scale) {
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48 values = loadValues(scale);
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49 this.scale = scale;
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50 }
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51 return values;
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52 }
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54 protected Map<String, double [][]> loadValues(double scale) {
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55 Map<String, double [][]> values = new HashMap<String, double [][]>();
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57 Session session = SessionHolder.HOLDER.get();
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59 Query gaugeQuery = session.createQuery(
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60 "from Gauge where name=:gauge and river.name=:river");
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61 gaugeQuery.setParameter("river", riverName);
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63 for (String gaugeName: gaugeNames) {
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64 gaugeQuery.setParameter("gauge", gaugeName);
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65 List<Gauge> gauges = gaugeQuery.list();
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66 if (gauges.isEmpty()) {
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67 log.warn(
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68 "no gauge '"+gaugeName+"' at river '"+riverName+"'");
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69 continue;
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70 }
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71 Gauge gauge = gauges.get(0);
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73 List<DischargeTable> tables = gauge.getDischargeTables();
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75 if (tables.isEmpty()) {
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76 log.warn(
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77 "no discharge table for gauge '" + gaugeName + "'");
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78 continue;
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79 }
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81 // TODO: Filter by time interval
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82 DischargeTable table = tables.get(0);
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83
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84 List<DischargeTableValue> dtvs =
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85 table.getDischargeTableValues();
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86
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87 double [][] vs = new double[2][dtvs.size()];
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88
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89 int idx = 0;
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90 for (DischargeTableValue dtv: dtvs) {
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91 vs[0][idx] = dtv.getQ().doubleValue() * scale;
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92 vs[1][idx] = dtv.getW().doubleValue() * scale;
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93 ++idx;
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94 }
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95
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96 values.put(gaugeName, vs);
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97 }
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98
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99 return values;
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100 }
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101 }
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102 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org