Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedHeightFactory.java @ 6215:0f5cacdd60a9
I999: Epochs and single years are handled in the same way in difference calc.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Thu, 06 Jun 2013 13:28:05 +0200 |
parents | af13ceeba52a |
children | 2d495b504c74 |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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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.minfo; |
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10 |
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11 |
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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 : |