Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentDensityFactory.java @ 8858:a805211690f7 3.2.x

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Fix license headers.
author Tom Gottfried <tom@intevation.de>
date Thu, 18 Jan 2018 20:52:41 +0100
parents 5e38e2924c07
children 0a5239a1e46e
rev   line source
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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.minfo;
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10
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11 import java.util.List;
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12
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13 import net.sf.ehcache.Cache;
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14 import net.sf.ehcache.Element;
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15
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16 import org.apache.log4j.Logger;
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17 import org.hibernate.SQLQuery;
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18 import org.hibernate.Session;
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19 import org.hibernate.type.StandardBasicTypes;
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20
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21 import org.dive4elements.river.artifacts.cache.CacheFactory;
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22 import org.dive4elements.river.backend.SessionHolder;
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23
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24
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25 public class SedimentDensityFactory
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26 {
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27 /** Private log to use here. */
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28 private static Logger log = Logger.getLogger(SedimentDensityFactory.class);
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29
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30 private static final String DENSITY_CACHE_NAME = "sedimentdensity";
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31
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32 /** Query to get sediment density values and kms. */
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33 private static final String SQL_SELECT_DENSITY =
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34 "SELECT sdv.station AS km, " +
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35 " sdv.density AS density," +
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36 " sdv.year AS year " +
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37 " FROM sediment_density sd" +
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38 " JOIN rivers r ON sd.river_id = r.id " +
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39 " JOIN sediment_density_values sdv " +
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40 " ON sd.id = sdv.sediment_density_id" +
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41 " WHERE r.name = :name";
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42
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43 /** Query to get sediment density values and kms by id. */
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44 private static final String SQL_SELECT_DENSITY_BY_ID =
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45 "SELECT sdv.station AS km, " +
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46 " sdv.density AS density," +
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47 " sdv.year AS year " +
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48 " FROM sediment_density sd" +
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49 " JOIN sediment_density_values sdv " +
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50 " ON sd.id = sdv.sediment_density_id" +
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51 " WHERE sd.id = :id";
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52
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53 /** Query to get sediment density depth by sediment density id. */
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54 private static final String SQL_SELECT_DENSITY_DEPTH_BY_ID =
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55 "SELECT d.lower AS lower, " +
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56 " d.upper AS upper" +
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57 " FROM sediment_density sd " +
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58 " JOIN depths d ON d.id = sd.depth_id " +
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59 " WHERE sd.id = :id";
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60
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61 /** Query to get sediment density description by id. */
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62 private static final String SQL_SELECT_DESCRIPTION_BY_ID =
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63 "SELECT sd.description " +
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64 " FROM sediment_density sd" +
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65 " WHERE sd.id = :id";
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66
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67 private SedimentDensityFactory() {}
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68
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69 public static SedimentDensity getSedimentDensity(
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70 String river,
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71 double startKm,
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72 double endKm
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73 ) {
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74 log.debug("getSedimentDensity");
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75 Cache cache = CacheFactory.getCache(DENSITY_CACHE_NAME);
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76
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77 if (cache == null) {
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78 log.debug("Cache not configured.");
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79 return getSedimentDensityUncached(river, startKm, endKm);
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80 }
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81
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82 String key = river + startKm + endKm;
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83 Element element = cache.get(key);
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84 if (element != null) {
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85 log.debug("SedimentDensity found in cache!");
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86 return (SedimentDensity)element.getValue();
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87 }
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88 SedimentDensity value =
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89 getSedimentDensityUncached(river, startKm, endKm);
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90
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91 if (value != null && key != null) {
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92 log.debug("Store sediment density values in cache.");
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93 element = new Element(key, value);
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94 cache.put(element);
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95 }
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96 return value;
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97 }
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98
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99 private static SedimentDensity getSedimentDensityUncached(
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100 String river,
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101 double startKm,
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102 double endKm
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103 ) {
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104 log.debug("getSedimentDensityUncached");
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105 Session session = SessionHolder.HOLDER.get();
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106 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_DENSITY)
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107 .addScalar("km", StandardBasicTypes.DOUBLE)
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108 .addScalar("density", StandardBasicTypes.DOUBLE)
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109 .addScalar("year", StandardBasicTypes.INTEGER);
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110 sqlQuery.setString("name", river);
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111 List<Object[]> results = sqlQuery.list();
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112 SedimentDensity density = new SedimentDensity();
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113 for (Object[] row : results) {
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114 if (row[0] != null && row[1] != null && row[2] != null) {
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115 density.addDensity(
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116 (Double)row[0], (Double)row[1], (Integer)row[2]);
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117 }
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118 }
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119
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120 density.cleanUp();
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121 return density;
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122 }
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123
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124 /** Query and return depth of a sediment density entry. */
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125 public static double[] getDepth(int id) {
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126 log.debug("getDepth");
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127 Session session = SessionHolder.HOLDER.get();
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128 SQLQuery sqlQuery = session.createSQLQuery(
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129 SQL_SELECT_DENSITY_DEPTH_BY_ID)
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130 .addScalar("lower", StandardBasicTypes.DOUBLE)
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131 .addScalar("upper", StandardBasicTypes.DOUBLE);
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132 sqlQuery.setInteger("id", id);
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133 List<Object[]> results = sqlQuery.list();
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134 Object[] row = results.get(0);
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135
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136 return new double[] {(Double)row[0], (Double)row[1]};
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137 }
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138
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139 /** Query and return description of a sediment density entry. */
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140 public static String getSedimentDensityDescription(int id) {
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141 log.debug("getSedimentDensityDescription");
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142 Session session = SessionHolder.HOLDER.get();
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143 SQLQuery sqlQuery = session.createSQLQuery(
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144 SQL_SELECT_DESCRIPTION_BY_ID)
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145 .addScalar("description", StandardBasicTypes.STRING);
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146 sqlQuery.setInteger("id", id);
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147 List<Object> results = sqlQuery.list();
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148
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149 return (String) results.get(0);
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150 }
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151
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152 public static SedimentDensity getSedimentDensityUncached(
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153 int id
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154 ) {
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155 log.debug("getSedimentDensityUncached id/year");
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156 Session session = SessionHolder.HOLDER.get();
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157 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_DENSITY_BY_ID)
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158 .addScalar("km", StandardBasicTypes.DOUBLE)
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159 .addScalar("density", StandardBasicTypes.DOUBLE)
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160 .addScalar("year", StandardBasicTypes.INTEGER);
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161 sqlQuery.setInteger("id", id);
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162 List<Object[]> results = sqlQuery.list();
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163 SedimentDensity density = new SedimentDensity();
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164 for (Object[] row : results) {
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165 if (row[0] != null && row[1] != null && row[2] != null) {
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166 density.addDensity(
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167 (Double)row[0], (Double)row[1], (Integer)row[2]);
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168 }
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169 }
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170
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171 density.cleanUp();
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172 return density;
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173 }
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Raimund Renkert <rrenkert@intevation.de>
parents:
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174 }
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175 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org