Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/SQOverview.java @ 4837:9e25c7523485

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Fixed calculation of effective width in MINFO SQ relation. * Get all (including empty datasets) from db. * Filter empty datasets when processing data of the same date. * Added debug outputs.
author Raimund Renkert <rrenkert@intevation.de>
date Wed, 23 Jan 2013 11:14:41 +0100
parents 35a6c9a49a76
children
rev   line source
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43e42315ce22 Added service for an overview chart of measuring points in sq relation.
Raimund Renkert <raimund.renkert@intevation.de>
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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 private static Logger log = Logger.getLogger(SQOverview.class);
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27
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28 /**
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29 * Serial version UId.
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30 */
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31 private static final long serialVersionUID = -8934372438968398508L;
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32
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33 public interface Filter {
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34
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35 boolean accept(KMIndex<List<Date>> entry);
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36
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37 } // interface Filter
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38
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39
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40 public static final Filter ACCEPT = new Filter() {
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41 @Override
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42 public boolean accept(KMIndex<List<Date>> entry) {
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43 return true;
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44 }
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45 };
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46
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47 public static class KmFilter implements Filter {
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48
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49 protected double km;
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50
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51 public KmFilter (double km) {
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52 this.km = km;
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53 }
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54 @Override
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55 public boolean accept(KMIndex<List<Date>> list) {
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56 for (KMIndex.Entry<List<Date>> e: list){
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57 if (e.getKm() == km) {
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58 return true;
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59 }
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60 }
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61 return false;
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62 }
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63 };
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64
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65 public static class DateFilter implements Filter {
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66
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67 protected Date date;
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68
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69 public DateFilter (Date date) {
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70 this.date = date;
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71 }
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72 @Override
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73 public boolean accept(KMIndex<List<Date>> list) {
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74 for (KMIndex.Entry<List<Date>> e: list){
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75 if (e.getValue().equals(this.date)) {
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76 return true;
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77 }
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78 }
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79 return false;
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80 }
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81 };
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82
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83 public static final double EPSILON = 1e-4;
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84
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85 public static final String DATE_FORMAT = "dd.MM.yyyy";
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86
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87 public static final String SQL_SQ =
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88 "SELECT" +
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89 " s.km AS km," +
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90 " m.datum AS datum " +
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91 "FROM messung m " +
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92 " JOIN station s" +
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93 " ON m.stationid = s.stationid " +
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94 " JOIN gewaesser g " +
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95 " ON s.gewaesserid = g.gewaesserid " +
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96 "WHERE" +
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97 " m.q_bpegel IS NOT NULL AND" +
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98 " g.name = :name " +
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99 "ORDER by" +
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100 " s.km, m.datum";
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101
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102 protected String riverName;
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103
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104 protected KMIndex<List<Date>> entries;
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105
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106 public SQOverview() {
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107 entries = new KMIndex<List<Date>>();
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108 }
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109
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110 public SQOverview(String riverName) {
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111 this();
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112 this.riverName = riverName;
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113 }
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114
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115 private static final boolean epsilonEquals(double a, double b) {
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116 return Math.abs(a - b) < EPSILON;
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117 }
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118
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119 protected void loadData(Session session) {
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120 SQLQuery query = session.createSQLQuery(SQL_SQ)
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121 .addScalar("km", StandardBasicTypes.DOUBLE)
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122 .addScalar("datum", StandardBasicTypes.DATE);
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123
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124 query.setString("name", riverName);
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125
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126 List<Object []> list = query.list();
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127
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128 if (list.isEmpty()) {
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129 log.warn("No river '" + riverName + "' found.");
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130 }
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131
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132 Double prevKm = -Double.MAX_VALUE;
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133 List<Date> dates = new ArrayList<Date>();
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134
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135 for (Object [] row: list) {
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136 Double km = (Double)row[0];
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137 if (!epsilonEquals(km, prevKm) && !dates.isEmpty()) {
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138 entries.add(prevKm, dates);
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139 dates = new ArrayList<Date>();
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140 }
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141 dates.add((Date)row[1]);
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142 prevKm = km;
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143 }
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144
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145 if (!dates.isEmpty()) {
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146 entries.add(prevKm, dates);
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147 }
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148 }
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149
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150 public boolean load(Session session) {
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151
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152 loadData(session);
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153
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154 return true;
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155 }
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156
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157
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158 public void generateOverview(Document document) {
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159 generateOverview(document, ACCEPT);
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160 }
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161
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162 public KMIndex<List<Date>> filter(Filter f) {
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163 // TODO: Apply filter
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164 return entries;
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165 }
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166
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167 public void generateOverview(
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168 Document document,
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169 Filter filter
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170 ) {
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171 KMIndex<List<Date>> filtered = filter(ACCEPT);
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172
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173 Element sqElement = document.createElement("sq");
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174
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175 Element riverElement = document.createElement("river");
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176
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177 riverElement.setAttribute("name", riverName);
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178
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179 sqElement.appendChild(riverElement);
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180
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181 SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);
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182
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183 Element kmE = document.createElement("km");
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184
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185 for (KMIndex.Entry<List<Date>> e: filtered) {
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186
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187 List<Date> dates = e.getValue();
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188
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189 if (!dates.isEmpty()) {
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190 Element dEs = document.createElement("dates");
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191
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192 for (Date d: dates) {
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193 Element dE = document.createElement("date");
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194
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195 dE.setAttribute("value", df.format(d));
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196
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197 dEs.appendChild(dE);
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198 }
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199
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200 kmE.appendChild(dEs);
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201 }
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202 }
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203
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204 sqElement.appendChild(kmE);
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205
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206 document.appendChild(sqElement);
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207 }
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208 }
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209 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org