Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedHeightFactory.java @ 5863:4897a58c8746

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River artifacts: Added new copyright headers.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:40:59 +0200
parents 5aa05a7a34b7
children af13ceeba52a
rev   line source
5863
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
4897a58c8746 River artifacts: Added new copyright headers.
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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.minfo;
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10
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11
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633fbb61a0cc Split bed heights into bed height epochs and single bed heights.
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12 import java.util.Date;
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13 import java.util.List;
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14
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15 import net.sf.ehcache.Cache;
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16 import net.sf.ehcache.Element;
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17
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18 import org.apache.log4j.Logger;
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19 import org.hibernate.SQLQuery;
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20 import org.hibernate.Session;
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21 import org.hibernate.type.StandardBasicTypes;
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22
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23 import org.dive4elements.river.artifacts.cache.CacheFactory;
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24 import org.dive4elements.river.artifacts.model.StaticBedHeightCacheKey;
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25 import org.dive4elements.river.backend.SessionHolder;
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26
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27 public class BedHeightFactory {
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28 /** Private logger to use here. */
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29 private static Logger log = Logger.getLogger(BedHeightFactory.class);
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30
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31 /** Query to get km and ws for wst_id and column_pos. */
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32 public static final String SQL_SELECT_SINGLE =
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33 "SELECT bhsv.height, bhsv.station, bhsv.data_gap, bhsv.sounding_width, bhs.year " +
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34 " FROM bed_height_single bhs" +
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35 " JOIN bed_height_single_values bhsv on bhsv.bed_height_single_id = bhs.id" +
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36 " WHERE bhs.id = :height_id";
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37
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38 /** Query to get name for wst_id and column_pos. */
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39 public static final String SQL_SELECT_EPOCH =
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40 "SELECT bv.height, bv.station, ti.start_time, ti.stop_time" +
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41 " FROM bed_height_epoch b" +
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42 " JOIN bed_height_epoch_values bv ON b.id = bv.bed_height_epoch_id" +
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43 " JOIN time_intervals ti ON b.time_interval_id = ti.id" +
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44 " WHERE b.id = :height_id";
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45
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46 /** Query to get name (description) for wst_id. */
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47 public static final String SQL_SELECT_DESCR_SINGLE =
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48 "SELECT description FROM bed_height_single "+
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49 "WHERE id = :height_id";
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50
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51 /** Query to get name (description) for wst_id. */
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52 public static final String SQL_SELECT_DESCR_EPOCH =
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53 "SELECT description from bed_height_epoch "+
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54 "WHERE id = :height_id";
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55
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56
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57 private BedHeightFactory() {
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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 * Get WKms for given column and wst_id, caring about the cache.
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63 */
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64 public static BedHeight getHeight(String type, int height_id, int time) {
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65 log.debug("BedHeightFactory.getHeight");
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66 Cache cache = CacheFactory.getCache(StaticBedHeightCacheKey.CACHE_NAME);
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67
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68 StaticBedHeightCacheKey cacheKey;
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69
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70 if (cache != null) {
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71 cacheKey = new StaticBedHeightCacheKey(height_id, time);
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72 Element element = cache.get(cacheKey);
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73 if (element != null) {
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74 log.debug("Got static bedheight values from cache");
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75 return (BedHeight)element.getValue();
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76 }
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77 }
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78 else {
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79 cacheKey = null;
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80 }
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81
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82 BedHeight values = getBedHeightUncached(type, height_id, time);
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83
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84 if (values != null && cacheKey != null) {
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85 log.debug("Store static bed height values in cache.");
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86 Element element = new Element(cacheKey, values);
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87 cache.put(element);
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88 }
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89 return values;
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90 }
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91
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92 /** Get name for a WKms. */
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93 public static String getHeightName(String type, int height_id) {
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94 log.debug("BedHeightFactory.getHeightName height_id/" + height_id);
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95
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96 String name = null;
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97 Session session = SessionHolder.HOLDER.get();
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98
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99 SQLQuery nameQuery = null;
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100 if (type.equals("single")) {
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101 nameQuery = session.createSQLQuery(SQL_SELECT_DESCR_SINGLE)
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102 .addScalar("description", StandardBasicTypes.STRING);
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103 nameQuery.setInteger("height_id", height_id);
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104 }
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105 else if (type.equals("epoch")) {
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106 nameQuery = session.createSQLQuery(SQL_SELECT_DESCR_EPOCH)
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107 .addScalar("description", StandardBasicTypes.STRING);
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108 nameQuery.setInteger("height_id", height_id);
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109 }
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110 else {
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111 return "none";
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112 }
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113 List<String> names = nameQuery.list();
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114 if (!names.isEmpty()) {
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115 name = names.get(0);
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116 }
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117
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118 return name;
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119 }
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120
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121
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122 /**
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123 * Get WKms from db.
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124 * @param column the position columns value
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125 * @param wst_id database id of the wst
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126 * @return according WKms.
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127 */
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128 public static BedHeight getBedHeightUncached(
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129 String type,
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130 int height_id,
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131 int time)
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132 {
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133 if (log.isDebugEnabled()) {
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134 log.debug("BedHeightFactory.getBedHeightUncached");
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135 }
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136
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137 Session session = SessionHolder.HOLDER.get();
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138 SQLQuery sqlQuery = null;
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139 if (type.equals("single")) {
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140 BedHeightSingle height =
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141 new BedHeightSingle(getHeightName(type, height_id));
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142 sqlQuery = session.createSQLQuery(SQL_SELECT_SINGLE)
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143 .addScalar("height", StandardBasicTypes.DOUBLE)
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144 .addScalar("station", StandardBasicTypes.DOUBLE)
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145 .addScalar("data_gap", StandardBasicTypes.DOUBLE)
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146 .addScalar("sounding_width", StandardBasicTypes.DOUBLE)
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147 .addScalar("year", StandardBasicTypes.INTEGER);
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148 sqlQuery.setInteger("height_id", height_id);
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149 List<Object []> results = sqlQuery.list();
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150
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151 for (int i = 0; i < results.size(); i++) {
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152 Object[] row = results.get(i);
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153 log.debug("got station: " + (Double)row[1]);
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154 height.add(
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155 (Double) row[0],
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156 (Double) row[1],
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157 (Double) row[2],
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158 (Double) row[3],
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159 (Integer) row[4]);
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160 }
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161 return height;
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162 }
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163 else if (type.equals("epoch")) {
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164 BedHeightEpoch height =
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165 new BedHeightEpoch(getHeightName(type, height_id));
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166 sqlQuery = session.createSQLQuery(SQL_SELECT_EPOCH)
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167 .addScalar("height", StandardBasicTypes.DOUBLE)
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168 .addScalar("station", StandardBasicTypes.DOUBLE)
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169 .addScalar("start_time", StandardBasicTypes.DATE)
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170 .addScalar("stop_time", StandardBasicTypes.DATE);
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171 sqlQuery.setInteger("height_id", height_id);
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172 List<Object []> results = sqlQuery.list();
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173
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174 for (Object [] row: results) {
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175 height.add(
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176 (Double) row[0],
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177 (Double) row[1],
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178 (Date) row[2],
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179 (Date) row[3]);
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180 }
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181 return height;
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182 }
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183 return new BedHeight();
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184 }
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185 }
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186 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org