Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/aft/SyncContext.java @ 4652:cf5ac1097d6a

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WINFOArtifact: Tiny optimization, get data only when needed.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Fri, 07 Dec 2012 11:26:21 +0100
parents 06891562e633
children b195fede1c3b
rev   line source
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
1 package de.intevation.aft;
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2
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3 import java.util.Map;
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4 import java.util.Date;
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5 import java.util.HashMap;
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6 import java.util.TreeMap;
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7
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8 import java.sql.SQLException;
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9 import java.sql.ResultSet;
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10
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11 import org.w3c.dom.Document;
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12
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13 import de.intevation.db.ConnectedStatements;
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14
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15 import org.w3c.dom.NodeList;
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16 import org.w3c.dom.Element;
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17
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18 import org.apache.log4j.Logger;
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19
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20 public class SyncContext
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21 {
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22 private static Logger log = Logger.getLogger(SyncContext.class);
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23
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24 protected ConnectedStatements aftStatements;
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25 protected ConnectedStatements flysStatements;
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26 protected Document dips;
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27
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28 protected Map<Long, DIPSGauge> numberToGauge;
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29 protected Map<TimeInterval, TimeInterval> flysTimeIntervals;
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30
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31 public SyncContext() {
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32 }
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33
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34 public SyncContext(
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35 ConnectedStatements aftStatements,
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36 ConnectedStatements flysStatements,
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37 Document dips
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38 ) {
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39 this.aftStatements = aftStatements;
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40 this.flysStatements = flysStatements;
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41 this.dips = dips;
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42 }
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43
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44 public void init() throws SQLException {
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45 numberToGauge = indexByNumber(dips);
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46 flysTimeIntervals = loadTimeIntervals();
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97de7a552b79 Load DIPS XML
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47 }
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48
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49 public ConnectedStatements getAftStatements() {
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50 return aftStatements;
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51 }
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52
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53 public void setAftStatements(ConnectedStatements aftStatements) {
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54 this.aftStatements = aftStatements;
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55 }
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56
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57 public ConnectedStatements getFlysStatements() {
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58 return flysStatements;
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59 }
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60
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61 public void setFlysStatements(ConnectedStatements flysStatements) {
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62 this.flysStatements = flysStatements;
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63 }
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64
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65 public Document getDips() {
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66 return dips;
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67 }
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68
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69 public void setDips(Document dips) {
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70 this.dips = dips;
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71 }
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72
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73 void close() {
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74 aftStatements.close();
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75 flysStatements.close();
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76 }
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77
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78 public static Long numberToLong(String s) {
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79 try {
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80 return Long.valueOf(s.trim());
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81 }
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82 catch (NumberFormatException nfe) {
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83 }
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84 return null;
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85 }
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86
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87 public Map<Long, DIPSGauge> getDIPSGauges() {
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88 return numberToGauge;
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89 }
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90
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91 protected static Map<Long, DIPSGauge> indexByNumber(Document document) {
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92 Map<Long, DIPSGauge> map = new HashMap<Long, DIPSGauge>();
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93 NodeList nodes = document.getElementsByTagName("PEGELSTATION");
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94 for (int i = nodes.getLength()-1; i >= 0; --i) {
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95 Element element = (Element)nodes.item(i);
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96 String numberString = element.getAttribute("NUMMER");
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97 Long number = numberToLong(numberString);
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98 if (number != null) {
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99 DIPSGauge newG = new DIPSGauge(element);
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100 DIPSGauge oldG = map.put(number, newG);
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101 if (oldG != null) {
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102 log.warn("DIPS: '" + newG.getName() +
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103 "' collides with '" + oldG.getName() +
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104 "' on gauge number " + number + ".");
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105 }
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106 }
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107 else {
4110
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108 log.warn("DIPS: Gauge '" + element.getAttribute("NAME") +
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109 "' has invalid gauge number '" + numberString + "'.");
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110 }
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111 }
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112 return map;
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113 }
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114
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115 protected Map<TimeInterval, TimeInterval> loadTimeIntervals()
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116 throws SQLException {
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117
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118 boolean debug = log.isDebugEnabled();
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119
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120 Map<TimeInterval, TimeInterval> intervals =
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121 new TreeMap<TimeInterval, TimeInterval>();
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122
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123 ResultSet rs = null;
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124
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125 try {
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126 rs = flysStatements
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127 .getStatement("select.timeintervals")
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128 .executeQuery();
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129
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130 while (rs.next()) {
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131 int id = rs.getInt("id");
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132 Date start = rs.getDate("start_time");
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133 Date stop = rs.getDate("stop_time");
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134
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135 if (debug) {
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136 log.debug("id: " + id);
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137 log.debug("start: " + start);
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138 log.debug("stop: " + stop);
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139 }
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140
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141 TimeInterval ti = new TimeInterval(id, start, stop);
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142 intervals.put(ti, ti);
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143 }
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144 }
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145 finally {
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146 if (rs != null) {
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147 rs.close();
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148 }
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149 }
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150
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151 if (debug) {
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152 log.debug("loaded time intervals: " + intervals.size());
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153 }
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154
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155 return intervals;
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156 }
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157
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158 public TimeInterval fetchOrCreateFLYSTimeInterval(TimeInterval key)
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159 throws SQLException
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160 {
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161 TimeInterval old = flysTimeIntervals.get(key);
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162 if (old != null) {
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163 return old;
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164 }
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165
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166 ResultSet rs = null;
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167 try {
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168 rs = flysStatements.getStatement("next.timeinterval.id")
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169 .executeQuery();
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170 rs.next();
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171 key.setId(rs.getInt("time_interval_id"));
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172 rs.close(); rs = null;
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173
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174 if (log.isDebugEnabled()) {
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175 log.debug("FLYS: Created time interval id: " + key.getId());
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176 log.debug("FLYS: " + key);
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177 }
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178
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179 flysStatements.getStatement("insert.timeinterval")
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180 .clearParameters()
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181 .setInt("id", key.getId())
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182 .setObject("start_time", key.getStart())
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183 .setObject("stop_time", key.getStop())
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184 .execute();
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185 }
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186 finally {
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187 if (rs != null) {
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188 rs.close();
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189 }
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190 }
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191
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192 flysTimeIntervals.put(key, key);
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193
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194 return key;
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195 }
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196
4077
97de7a552b79 Load DIPS XML
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197 }
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198 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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199
http://dive4elements.wald.intevation.org