Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/GaugeFinderFactory.java @ 9726:0a5239a1e46e 3.2.x

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Upgrade to Log4j 2
author Tom Gottfried <tom@intevation.de>
date Wed, 02 Mar 2022 10:26:50 +0100
parents af13ceeba52a
children
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.model;
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10
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11 import org.dive4elements.river.artifacts.cache.CacheFactory;
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12
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13 import org.dive4elements.river.backend.SessionHolder;
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14
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15 import org.dive4elements.river.model.River;
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16
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17 import java.util.ArrayList;
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18 import java.util.List;
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19
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20 import net.sf.ehcache.Cache;
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21 import net.sf.ehcache.Element;
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22
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23 import org.apache.logging.log4j.Logger;
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24 import org.apache.logging.log4j.LogManager;
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25
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26 import org.hibernate.SQLQuery;
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27 import org.hibernate.Session;
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28
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29 import org.hibernate.type.StandardBasicTypes;
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30
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31 /** Get GaugeFinders. */
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32 public class GaugeFinderFactory
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33 {
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34 private static Logger log = LogManager.getLogger(GaugeFinderFactory.class);
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35
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36 public static final String CACHE_NAME = "gauge-finders";
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37
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38 public static final String SQL_GAUGES =
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39 "SELECT" +
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40 " g.id AS gauge_id," +
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41 " g.name AS name," +
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42 " r.a AS a," +
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43 " r.b AS b " +
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44 "FROM gauges g" +
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45 " JOIN ranges r ON g.range_id = r.id " +
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46 "WHERE" +
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47 " g.river_id = :river_id " +
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48 "ORDER BY r.a";
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49
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50 private static GaugeFinderFactory INSTANCE;
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51
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52 protected GaugeFinderFactory() {
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53 }
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54
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55 public static synchronized GaugeFinderFactory getInstance() {
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56 if (INSTANCE == null) {
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57 INSTANCE = new GaugeFinderFactory();
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58 }
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59
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60 return INSTANCE;
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61 }
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62
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63 public GaugeFinder getGaugeFinder(String riverName) {
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64 River river = RiverFactory.getRiver(riverName);
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65 return river != null
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66 ? getGaugeFinder(river.getId(), river.getKmUp())
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67 : null;
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68 }
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69
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70 public synchronized GaugeFinder getGaugeFinder(
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71 int riverId,
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72 boolean isKmUp
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73 ) {
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74 Cache cache = CacheFactory.getCache(CACHE_NAME);
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75
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76 if (cache == null) {
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77 return getUncached(riverId, isKmUp);
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78 }
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79
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80 String cacheKey = riverId + "-" + isKmUp;
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81 Element element = cache.get(cacheKey);
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82
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83 if (element != null) {
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84 return (GaugeFinder)element.getValue();
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85 }
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86
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87 GaugeFinder finder = getUncached(riverId, isKmUp);
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88
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89 if (finder != null) {
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90 cache.put(new Element(cacheKey, finder));
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91 }
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92
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93 return finder;
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94 }
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95
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96 protected GaugeFinder loadGauges(
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97 Session session,
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98 int riverId,
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99 boolean isKmUp
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100 ) {
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101 SQLQuery query = session.createSQLQuery(SQL_GAUGES)
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102 .addScalar("gauge_id", StandardBasicTypes.INTEGER)
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103 .addScalar("name", StandardBasicTypes.STRING)
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104 .addScalar("a", StandardBasicTypes.DOUBLE)
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105 .addScalar("b", StandardBasicTypes.DOUBLE);
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106
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107 query.setInteger("river_id", riverId);
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108
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109 List<Object []> list = query.list();
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110
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111 if (list.isEmpty()) {
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112 log.warn("River " + riverId + " has no gauges.");
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113 return null;
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114 }
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115
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116 List<GaugeRange> gauges = new ArrayList<GaugeRange>();
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117
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118 for (Object [] row: list) {
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119 int gaugeId = (Integer)row[0];
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120 String name = (String) row[1];
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121 double start = (Double) row[2];
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122 double end = (Double) row[3];
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123 GaugeRange gauge = new GaugeRange(start, end, name, gaugeId);
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124 gauges.add(gauge);
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125 }
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126
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127 return new GaugeFinder(gauges, isKmUp);
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128 }
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129
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130 protected GaugeFinder getUncached(int riverId, boolean isKmUp) {
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131 Session session = SessionHolder.HOLDER.get();
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132
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133 GaugeFinder finder = loadGauges(session, riverId, isKmUp);
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134
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135 if (finder == null
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136 || !finder.loadDischargeSectors(session, riverId)) {
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137 return null;
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138 }
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139
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140 return finder;
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141 }
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142 }
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143 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org