Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/histogram/HistogramHelper.java @ 629:d08b9ba148c5

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Implemented logic to adjust number of bins corresponding to user input. gnv-artifacts/trunk@706 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Feb 2010 14:30:52 +0000
parents 3d13fa281a7e
children d70cac2bafc0
rev   line source
617
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1 package de.intevation.gnv.histogram;
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2
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3 import de.intevation.gnv.geobackend.base.Result;
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4 import de.intevation.gnv.geobackend.base.ResultDescriptor;
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5
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6 import de.intevation.gnv.state.describedata.KeyValueDescibeData;
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7
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8 import java.util.ArrayList;
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9 import java.util.Collection;
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10 import java.util.Iterator;
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11 import java.util.List;
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12
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13 import org.apache.log4j.Logger;
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14
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15
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16 /**
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17 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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18 */
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19 public class HistogramHelper {
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20
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21 private static Logger logger = Logger.getLogger(HistogramHelper.class);
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22
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23
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24 private HistogramHelper() {
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25 }
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26
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27
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28 /*
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29 public static Object[][] prepareHistogramData(
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30 Collection input,
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31 Collection parameters,
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32 Collection measurements,
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33 Collection dates
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34 ) {
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35 List<Double> values = new ArrayList<Double>();
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36
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37 ResultDescriptor rd;
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38 int b1Idx, b2Idx, b3Idx, yIdx;
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39
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40 Iterator it = parameters.iterator();
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41 KeyValueDescibeData param = (KeyValueDescibeData) it.hasNext();
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42 int parameter = param.getValue();
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43
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44 Iterator iter = input.iterator();
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45 while (iter.hasNext()) {
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46 Result row = (Result) iter.next();
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47
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48 if (rd == null) {
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49 rd = row.getResultDescriptor();
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50 b1Idx = rd.getColumnIndex("GROUP1");
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51 b2Idx = rd.getColumnIndex("GROUP2");
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52 b3Idx = rd.getColumnIndex("GROUP3");
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53 }
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54
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55 if (row.getInteger(b1Idx) == parameter
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56 && row.getInteger(b2Idx) == measurement)
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57 {
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58
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59 }
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60 }
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61
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62 return null;
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63 }
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64 */
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65
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66 public static Object[][] prepareHistogramData(
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67 Collection input,
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68 Collection parameters,
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69 Collection measurements,
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70 Collection dates
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71 ) {
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72 List names = new ArrayList<String>();
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73 List data = new ArrayList<Double[]>();
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74
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75 if (logger.isDebugEnabled()) {
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76 logger.debug("############ prepare histogram data ##########");
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77 logger.debug("Input data size: " + input.size());
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78 }
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79
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80 if (input == null) {
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81 return new Object[0][0];
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82 }
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83
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84 String break1, break2, break3;
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85 int b1Idx = -1;
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86 int b2Idx = -1;
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87 int b3Idx = -1;
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88 int yIdx = -1;
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89 try {
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90 Iterator iter = input.iterator();
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91
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92 if (iter.hasNext()) {
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93 Result row = (Result) iter.next();
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94 Result previousRow = row;
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95
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96 if (b1Idx == -1) {
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97 ResultDescriptor rd = row.getResultDescriptor();
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98 b1Idx = rd.getColumnIndex("GROUP1");
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99 b2Idx = rd.getColumnIndex("GROUP2");
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100 b3Idx = rd.getColumnIndex("GROUP3");
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101 yIdx = rd.getColumnIndex("YORDINATE");
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102
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103 if (b1Idx == -1 || b2Idx == -1 || b3Idx == -1 || yIdx == -1) {
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104 return new Object[0][0];
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105 }
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106 }
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107 break1 = row.getString(b1Idx);
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108 break2 = row.getString(b2Idx);
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109 break3 = row.getString(b3Idx);
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110
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111 List values = new ArrayList<Double>();
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112 while (iter.hasNext()) {
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113
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114 // found new series
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115 if (!break1.equals(row.getString(b1Idx))
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116 || !break2.equals(row.getString(b2Idx))
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117 || !break3.equals(row.getString(b3Idx))
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118 ) {
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119
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120 // get parameter name
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121 String name = generateName(
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122 break1, break2, break3,
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123 parameters, measurements, dates
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124 );
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125
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126 // add values and parameter name
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127 data.add((Double[]) values.toArray(new Double[values.size()]));
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128 names.add(name);
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129
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130 if (logger.isDebugEnabled()) {
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131 logger.debug(" --- series name: " + name);
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132 logger.debug(" --- series items: " + values.size());
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133 }
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134
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135 values.clear();
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136
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137 Double yValue = row.getDouble(yIdx);
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138 if (yValue != null)
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139 values.add(yValue);
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140
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141 // set new conditions to find new series
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142 break1 = row.getString(b1Idx);
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143 break2 = row.getString(b2Idx);
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144 break3 = row.getString(b3Idx);
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145
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146 previousRow = row;
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147 row = (Result) iter.next();
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148 } else {
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149
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150 Double value = row.getDouble(yIdx);
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151 if (value != null)
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152 values.add(value);
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153
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154 row = (Result) iter.next();
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155 }
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156 }
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157
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158 Double yValue = row.getDouble(yIdx);
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159 if (yValue != null)
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160 values.add(yValue);
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161
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162 String name = generateName(
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163 break1, break2, break3, parameters, measurements, dates);
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164
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165 if (logger.isDebugEnabled()) {
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166 logger.debug(" --- series name: " + name);
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167 logger.debug(" --- series items: " + values.size());
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168 }
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169
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170 data.add((Double[]) values.toArray(new Double[values.size()]));
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171 names.add(name);
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172 }
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173 }
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174 catch (Exception e) {
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175 logger.error(e.getMessage(), e);
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176 }
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177
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178 int series = data.size();
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179 logger.debug(" === Found total: " + series);
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180 Object[][] obj = new Object[series][2];
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181 for (int i = 0; i < series; i++) {
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182 obj[i][0] = names.get(i);
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183 obj[i][1] = (Double[]) data.get(i);
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184 }
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185
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186 return obj;
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187 }
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188
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189
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190 protected static String generateName(
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191 String break1, String break2, String break3,
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192 Collection parameters, Collection measurements, Collection dates)
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193 {
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194 return findValueTitle(parameters,break1) + " " +
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195 findValueTitle(measurements,break2) + "m";
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196 }
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197
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198
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199 protected static String findValueTitle(Collection values, String id) {
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200 if (values != null) {
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201 Iterator it = values.iterator();
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202
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203 while (it.hasNext()) {
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204 KeyValueDescibeData data = (KeyValueDescibeData) it.next();
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205
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206 if (id.equals(data.getKey())) {
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207 return data.getValue();
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208 }
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209 }
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210 }
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211 return "";
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212 }
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213 }
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214 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org