Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/SQOverview.java @ 8684:2e11fc7f5d35

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(issue1796) Use seddb name of a river when accessing the seddb
author Andre Heinecke <andre.heinecke@intevation.de>
date Mon, 13 Apr 2015 11:26:44 +0200
parents af13ceeba52a
children 0beb34d55630
rev   line source
5863
4897a58c8746 River artifacts: Added new copyright headers.
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
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9 package org.dive4elements.river.artifacts.model;
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10
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11 import java.io.Serializable;
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12
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13 import java.text.SimpleDateFormat;
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14
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15 import java.util.ArrayList;
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16 import java.util.Date;
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17 import java.util.List;
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18
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19 import org.apache.log4j.Logger;
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20
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21 import org.hibernate.SQLQuery;
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22 import org.hibernate.Session;
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23
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24 import org.hibernate.type.StandardBasicTypes;
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25
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26 import org.w3c.dom.Document;
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27 import org.w3c.dom.Element;
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28
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29 import org.dive4elements.river.utils.KMIndex;
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2e11fc7f5d35 (issue1796) Use seddb name of a river when accessing the seddb
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30 import org.dive4elements.river.artifacts.model.RiverFactory;
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31
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32 public class SQOverview
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33 implements Serializable
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34 {
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35 private static Logger log = Logger.getLogger(SQOverview.class);
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36
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37 /**
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38 * Serial version UId.
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39 */
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40 private static final long serialVersionUID = -8934372438968398508L;
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41
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42 public interface Filter {
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43
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44 boolean accept(KMIndex<List<Date>> entry);
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45
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46 } // interface Filter
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47
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48
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49 public static final Filter ACCEPT = new Filter() {
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50 @Override
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51 public boolean accept(KMIndex<List<Date>> entry) {
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52 return true;
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53 }
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54 };
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55
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56 public static class KmFilter implements Filter {
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57
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58 protected double km;
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59
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60 public KmFilter (double km) {
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61 this.km = km;
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62 }
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63 @Override
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64 public boolean accept(KMIndex<List<Date>> list) {
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65 for (KMIndex.Entry<List<Date>> e: list){
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66 if (e.getKm() == km) {
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67 return true;
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68 }
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69 }
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70 return false;
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71 }
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72 };
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73
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74 public static class DateFilter implements Filter {
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75
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76 protected Date date;
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77
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78 public DateFilter (Date date) {
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79 this.date = date;
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80 }
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81 @Override
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82 public boolean accept(KMIndex<List<Date>> list) {
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83 for (KMIndex.Entry<List<Date>> e: list){
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84 if (e.getValue().equals(this.date)) {
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85 return true;
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86 }
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87 }
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88 return false;
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89 }
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90 };
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91
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92 public static final double EPSILON = 1e-4;
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93
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94 public static final String DATE_FORMAT = "dd.MM.yyyy";
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95
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96 public static final String SQL_SQ =
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97 "SELECT" +
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98 " s.km AS km," +
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99 " m.datum AS datum " +
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100 "FROM messung m " +
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101 " JOIN station s" +
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102 " ON m.stationid = s.stationid " +
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103 " JOIN gewaesser g " +
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104 " ON s.gewaesserid = g.gewaesserid " +
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105 "WHERE" +
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106 " m.q_bpegel IS NOT NULL AND" +
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107 " g.name = :name " +
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108 "ORDER by" +
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109 " s.km, m.datum";
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110
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111 protected String riverName;
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112
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113 protected KMIndex<List<Date>> entries;
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114
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115 public SQOverview() {
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116 entries = new KMIndex<List<Date>>();
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117 }
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118
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119 public SQOverview(String riverName) {
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120 this();
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121 this.riverName = RiverFactory.getRiver(riverName).nameForSeddb();
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122 }
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123
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124 private static final boolean epsilonEquals(double a, double b) {
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125 return Math.abs(a - b) < EPSILON;
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126 }
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127
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128 protected void loadData(Session session) {
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129 SQLQuery query = session.createSQLQuery(SQL_SQ)
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130 .addScalar("km", StandardBasicTypes.DOUBLE)
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131 .addScalar("datum", StandardBasicTypes.DATE);
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132
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133 query.setString("name", riverName);
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134
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135 List<Object []> list = query.list();
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136
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137 if (list.isEmpty()) {
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138 log.warn("No river '" + riverName + "' found.");
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139 }
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140
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141 Double prevKm = -Double.MAX_VALUE;
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142 List<Date> dates = new ArrayList<Date>();
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143
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144 for (Object [] row: list) {
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145 Double km = (Double)row[0];
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146 if (!epsilonEquals(km, prevKm) && !dates.isEmpty()) {
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147 entries.add(prevKm, dates);
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148 dates = new ArrayList<Date>();
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149 }
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150 dates.add((Date)row[1]);
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151 prevKm = km;
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152 }
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153
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154 if (!dates.isEmpty()) {
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155 entries.add(prevKm, dates);
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156 }
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157 }
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158
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159 public boolean load(Session session) {
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160
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161 loadData(session);
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162
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163 return true;
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164 }
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165
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166
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167 public void generateOverview(Document document) {
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168 generateOverview(document, ACCEPT);
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169 }
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170
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171 public KMIndex<List<Date>> filter(Filter f) {
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172 // TODO: Apply filter
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173 return entries;
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174 }
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175
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176 public void generateOverview(
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177 Document document,
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178 Filter filter
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179 ) {
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180 KMIndex<List<Date>> filtered = filter(ACCEPT);
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181
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182 Element sqElement = document.createElement("sq");
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183
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184 Element riverElement = document.createElement("river");
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185
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186 riverElement.setAttribute("name", riverName);
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187
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188 sqElement.appendChild(riverElement);
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189
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190 SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);
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191
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192 Element kmE = document.createElement("km");
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193
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194 for (KMIndex.Entry<List<Date>> e: filtered) {
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195
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196 List<Date> dates = e.getValue();
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197
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198 if (!dates.isEmpty()) {
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199 Element dEs = document.createElement("dates");
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200
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201 for (Date d: dates) {
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202 Element dE = document.createElement("date");
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203
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204 dE.setAttribute("value", df.format(d));
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205
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206 dEs.appendChild(dE);
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207 }
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208
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209 kmE.appendChild(dEs);
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210 }
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211 }
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212
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213 sqElement.appendChild(kmE);
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214
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215 document.appendChild(sqElement);
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216 }
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217 }
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218 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org