annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/SQOverview.java @ 3642:83c0735092a3

FixA: Increase Q max about 5% if storing as AT file. flys-artifacts/trunk@5362 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 05 Sep 2012 08:23:56 +0000
parents 816ceb0418b9
children 35a6c9a49a76
rev   line source
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43e42315ce22 Added service for an overview chart of measuring points in sq relation.
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1 package de.intevation.flys.artifacts.model;
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2
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3 import java.io.Serializable;
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4
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5 import java.text.SimpleDateFormat;
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6
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7 import java.util.ArrayList;
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8 import java.util.Date;
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9 import java.util.List;
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10
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11 import org.apache.log4j.Logger;
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12
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13 import org.hibernate.SQLQuery;
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14 import org.hibernate.Session;
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15
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16 import org.hibernate.type.StandardBasicTypes;
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17
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18 import org.w3c.dom.Document;
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19 import org.w3c.dom.Element;
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20
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21 import de.intevation.flys.utils.KMIndex;
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22
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23 public class SQOverview
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24 implements Serializable
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25 {
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26
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27 /**
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28 * Serial version UId.
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29 */
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30 private static final long serialVersionUID = -8934372438968398508L;
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31
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32 public interface Filter {
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33
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34 boolean accept(KMIndex<List<Date>> entry);
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35
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36 } // interface Filter
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37
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38
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39 public static final Filter ACCEPT = new Filter() {
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40 @Override
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41 public boolean accept(KMIndex<List<Date>> entry) {
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42 return true;
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43 }
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44 };
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45
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46 public static class KmFilter implements Filter {
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47
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48 protected double km;
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49
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50 public KmFilter (double km) {
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51 this.km = km;
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52 }
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53 @Override
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54 public boolean accept(KMIndex<List<Date>> list) {
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55 for (KMIndex.Entry<List<Date>> e: list){
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56 if (e.getKm() == km) {
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57 return true;
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58 }
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59 }
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60 return false;
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61 }
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62 };
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63
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64 public static class DateFilter implements Filter {
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65
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66 protected Date date;
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67
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68 public DateFilter (Date date) {
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69 this.date = date;
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70 }
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71 @Override
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72 public boolean accept(KMIndex<List<Date>> list) {
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73 for (KMIndex.Entry<List<Date>> e: list){
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74 if (e.getValue().equals(this.date)) {
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75 return true;
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76 }
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77 }
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78 return false;
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79 }
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80 };
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81
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82 private static Logger log = Logger.getLogger(FixingsOverview.class);
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83
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84 public static final double EPSILON = 1e-4;
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85
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86 public static final String DATE_FORMAT = "dd.MM.yyyy";
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87
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88 public static final String SQL_SQ =
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89 "SELECT" +
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90 " s.km AS km," +
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91 " m.datum AS datum " +
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92 "FROM messung m " +
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93 " JOIN station s" +
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94 " ON m.stationid = s.stationid " +
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95 " JOIN gewaesser g " +
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96 " ON s.gewaesserid = g.gewaesserid " +
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97 "WHERE" +
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98 " m.q_bpegel IS NOT NULL AND" +
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99 " g.name = :name " +
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100 "ORDER by" +
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101 " s.km, m.datum";
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102
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103 protected String riverName;
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104
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105 protected KMIndex<List<Date>> entries;
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106
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107 public SQOverview() {
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108 entries = new KMIndex<List<Date>>();
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109 }
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110
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111 public SQOverview(String riverName) {
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112 this();
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113 this.riverName = riverName;
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114 }
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115
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116 private static final boolean epsilonEquals(double a, double b) {
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117 return Math.abs(a - b) < EPSILON;
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118 }
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119
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120 protected void loadData(Session session) {
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121 SQLQuery query = session.createSQLQuery(SQL_SQ)
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122 .addScalar("km", StandardBasicTypes.DOUBLE)
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123 .addScalar("datum", StandardBasicTypes.DATE);
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124
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125 query.setString("name", riverName);
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126
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127 List<Object []> list = query.list();
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128
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129 if (list.isEmpty()) {
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130 log.warn("No river '" + riverName + "' found.");
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131 }
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132
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133 Double prevKm = -Double.MAX_VALUE;
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134 List<Date> dates = new ArrayList<Date>();
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135
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136 for (Object [] row: list) {
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137 Double km = (Double)row[0];
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138 if (!epsilonEquals(km, prevKm) && !dates.isEmpty()) {
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139 entries.add(prevKm, dates);
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140 dates = new ArrayList<Date>();
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141 }
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142 dates.add((Date)row[1]);
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143 prevKm = km;
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144 }
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145
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146 if (!dates.isEmpty()) {
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147 entries.add(prevKm, dates);
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148 }
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149 }
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150
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151 public boolean load(Session session) {
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152
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153 loadData(session);
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154
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155 return true;
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156 }
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157
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158
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159 public void generateOverview(Document document) {
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160 generateOverview(document, ACCEPT);
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161 }
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162
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163 public KMIndex<List<Date>> filter(Filter f) {
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164 // TODO: Apply filter
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165 return entries;
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166 }
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167
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168 public void generateOverview(
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169 Document document,
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170 Filter filter
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171 ) {
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172 KMIndex<List<Date>> filtered = filter(ACCEPT);
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173
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174 Element sqElement = document.createElement("sq");
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175
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176 Element riverElement = document.createElement("river");
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177
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178 riverElement.setAttribute("name", riverName);
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179
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180 sqElement.appendChild(riverElement);
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181
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182 SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);
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183
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184 Element kmE = document.createElement("km");
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185
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186 for (KMIndex.Entry<List<Date>> e: filtered) {
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187
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188 List<Date> dates = e.getValue();
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189
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190 if (!dates.isEmpty()) {
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191 Element dEs = document.createElement("dates");
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192
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193 for (Date d: dates) {
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194 Element dE = document.createElement("date");
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195
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196 dE.setAttribute("value", df.format(d));
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197
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198 dEs.appendChild(dE);
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199 }
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200
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201 kmE.appendChild(dEs);
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202 }
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203 }
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204
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205 sqElement.appendChild(kmE);
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206
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207 document.appendChild(sqElement);
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208 }
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209 }
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210 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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