Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedDiffCalculation.java @ 7261:a56fe3bc6700

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Refactoring: Let RiverAccess.getRiver return an River. Renamed getRiver in getRiverName. Update Callers.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Tue, 08 Oct 2013 14:50:58 +0200
parents d4108d6c4000
children 4eccd72595ee
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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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 package org.dive4elements.river.artifacts.model.minfo;
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9
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10 import gnu.trove.TDoubleArrayList;
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11
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12 import java.util.Date;
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13
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14 import org.apache.log4j.Logger;
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15
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16 import org.dive4elements.artifacts.CallContext;
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17 import org.dive4elements.river.artifacts.access.BedDifferencesAccess;
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18 import org.dive4elements.river.artifacts.model.Calculation;
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19 import org.dive4elements.river.artifacts.model.CalculationResult;
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20
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21 /**
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22 * Perform calculation of differences of bed height (german Sohlhoehe).
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23 * The input are either single year data or epochs.
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24 */
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25 public class BedDiffCalculation
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26 extends Calculation
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27 {
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28 private static final Logger logger =
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29 Logger.getLogger(BedDiffCalculation.class);
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30
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31 protected String river;
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32 protected String yearEpoch;
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33 protected int [][] heightIds;
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34
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35 public BedDiffCalculation() {
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36 }
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37
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38 public CalculationResult calculate(BedDifferencesAccess access, CallContext context) {
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39 logger.info("BedDiffCalculation.calculate");
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40
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a56fe3bc6700 Refactoring: Let RiverAccess.getRiver return an River.
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parents: 6948
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41 String river = access.getRiverName();
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42 String yearEpoch = access.getYearEpoch();
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43 int [][] heightIds = access.extractHeightIds(context);
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44
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45 if (river == null) {
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46 // TODO: i18n
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47 addProblem("minfo.missing.river");
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48 }
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49
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50 if (yearEpoch == null) {
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51 addProblem("minfo.missing.year_epoch");
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52 }
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53
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54 if (!hasProblems()) {
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55 this.river = river;
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56 this.yearEpoch = yearEpoch;
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57 this.heightIds = heightIds;
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58 return internalCalculate();
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59 }
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60
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61 return new CalculationResult();
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62 }
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63
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64 private CalculationResult internalCalculate() {
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65
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66 BedDiffYearResult [] results = new BedDiffYearResult[heightIds.length];
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67
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68 for (int i = 0; i < heightIds.length; i++) {
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69 BedHeight [] pair = getHeightPair(heightIds[i], "single");
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70 results[i] = calculateYearDifference(pair);
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71 }
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72 return new CalculationResult(results, this);
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73 // Currently epochs are handled like single years. To handle epochs
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74 // uncomment the follwing code and use an if-clause in the code above.
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75 /*
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76 if (yearEpoch.equals("epoch")) {
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77 BedDiffEpochResult [] results = new BedDiffEpochResult[heightIds.length];
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78
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79 for (int i = 0; i < heightIds.length; i++) {
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80 BedHeight[] pair = getHeightPair(heightIds[i], "epoch");
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81 results[i] = calculateEpochDifference(pair);
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82 }
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83 return new CalculationResult(results, this);
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84 }
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85
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86 return new CalculationResult();
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87 */
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88 }
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89
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90 /** Get two BedHeights from factory. */
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91 private static BedHeight [] getHeightPair(int [] ids, String type) {
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92 return new BedHeight [] {
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93 BedHeightFactory.getHeight(type, ids[0], 0),
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94 BedHeightFactory.getHeight(type, ids[1], 0)
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95 };
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96 }
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97
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98 private BedDiffEpochResult calculateEpochDifference(BedHeight[] pair) {
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99
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100 BedHeight bh1 = pair[0];
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101 BedHeight bh2 = pair[1];
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102
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103 TDoubleArrayList stations = bh1.getStations();
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104 int size = stations.size();
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105
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106 TDoubleArrayList diffRes = new TDoubleArrayList(size);
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107 TDoubleArrayList kms = new TDoubleArrayList(size);
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108 TDoubleArrayList heights1 = new TDoubleArrayList(size);
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109 TDoubleArrayList heights2 = new TDoubleArrayList(size);
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110
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111 for (int i = 0; i < size; i++) {
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112 double station = stations.getQuick(i);
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113 double h1 = bh1.getHeight(station);
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114 double h2 = bh2.getHeight(station);
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115 double hDiff = h1 - h2;
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116 if (!Double.isNaN(hDiff)) {
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117 diffRes.add(hDiff);
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118 kms.add(station);
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119 heights1.add(h1);
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120 heights2.add(h2);
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121 }
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122 }
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123 Date start = ((BedHeightEpoch)bh1).getStart();
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124 Date end = ((BedHeightEpoch)bh2).getEnd();
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125 return new BedDiffEpochResult(kms, diffRes, heights1, heights2, start, end);
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126 }
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127
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128 private BedDiffYearResult calculateYearDifference(BedHeight[] pair) {
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129
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130 BedHeightSingle s1 = (BedHeightSingle)pair[0];
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131 BedHeightSingle s2 = (BedHeightSingle)pair[1];
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132
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133 TDoubleArrayList stations = s1.getStations();
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134 int size = stations.size();
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135
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136 TDoubleArrayList diffRes = new TDoubleArrayList(size);
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137 TDoubleArrayList kms = new TDoubleArrayList(size);
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138 TDoubleArrayList morphs = new TDoubleArrayList(size);
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139 TDoubleArrayList absolute = new TDoubleArrayList(size);
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140 TDoubleArrayList gap = new TDoubleArrayList(size);
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141 TDoubleArrayList heights1 = new TDoubleArrayList(size);
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142 TDoubleArrayList heights2 = new TDoubleArrayList(size);
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143
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144 int range = Math.abs(s1.getYear() - s2.getYear());
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145
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146 for (int i = 0; i < size; i++) {
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147 double station = stations.getQuick(i);
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148 double h1 = s1.getHeight(station);
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149 double h2 = s2.getHeight(station);
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150 double hDiff = h1 - h2;
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151
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152 if (!Double.isNaN(hDiff)) {
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153 diffRes.add(hDiff);
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154 kms.add(station);
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155
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156 morphs.add(Math.max(
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157 s1.getMorphWidth(station),
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158 s2.getMorphWidth(station)));
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159
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160 gap.add(Math.max(
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161 s1.getDataGap(station),
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162 s2.getDataGap(station)));
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163
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164 absolute.add((hDiff / range) * 100d);
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165 heights1.add(h1);
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166 heights2.add(h2);
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167 }
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168 }
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169 return new BedDiffYearResult(
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170 kms,
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171 diffRes,
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172 heights1,
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173 heights2,
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174 morphs,
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175 absolute,
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176 gap,
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177 s1.getYear(),
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178 s2.getYear(),
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179 s1.getName(),
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180 s2.getName());
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181 }
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182 }
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183 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org