Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WstValueTableFactory.java @ 3786:4adc35aa655c
merged flys-artifacts/2.9.1
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 28 Sep 2012 12:14:47 +0200 |
parents | b2ea89a665bc |
children | f4fd64a4d502 |
rev | line source |
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1 package de.intevation.flys.artifacts.model; |
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2 |
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3 import java.util.Arrays; |
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4 import java.util.List; |
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5 import java.util.ArrayList; |
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6 |
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7 import net.sf.ehcache.Cache; |
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8 import net.sf.ehcache.Element; |
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9 |
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10 import de.intevation.flys.artifacts.cache.CacheFactory; |
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11 |
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12 import de.intevation.flys.backend.SessionHolder; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 |
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16 import de.intevation.flys.model.River; |
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17 import de.intevation.flys.model.Wst; |
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18 |
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19 import org.hibernate.Session; |
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20 import org.hibernate.Query; |
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21 import org.hibernate.SQLQuery; |
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22 |
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23 import org.hibernate.type.StandardBasicTypes; |
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24 |
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25 /** |
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26 * Creates WstValueTable s from database. |
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27 * WstValueTable s are used to interpolate given w/q/km values. |
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28 */ |
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29 public class WstValueTableFactory |
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30 { |
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31 private static Logger log = Logger.getLogger(WstValueTableFactory.class); |
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32 |
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33 public static final int DEFAULT_KIND = 0; |
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34 |
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35 // TODO: put this into a property file |
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36 |
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37 public static final String HQL_WST = |
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38 "from Wst where river=:river and kind=:kind"; |
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39 |
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40 public static final String SQL_SELECT_NAMES_POS = |
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41 "SELECT position, name FROM wst_columns " + |
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42 "WHERE wst_id = :wst_id ORDER BY position"; |
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43 |
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44 /** Select Qs for wst (view sorted by column). */ |
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45 public static final String SQL_SELECT_QS = |
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46 "SELECT column_pos, q, a, b FROM wst_q_values " + |
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47 "WHERE wst_id = :wst_id"; |
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48 |
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49 // (sorted by km) |
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50 public static final String SQL_SELECT_WS = |
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51 "SELECT km, w, column_pos FROM wst_w_values " + |
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52 "WHERE wst_id = :wst_id"; |
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53 |
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54 /** Statement to query qranges of a single column. */ |
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55 public static final String SQL_SELECT_QS_AT_COL = |
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56 "SELECT q, a, b FROM wst_q_values " + |
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57 "WHERE wst_id = :wst_id AND column_pos = :column_pos"; |
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58 |
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59 // (sorted by km) |
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60 public static final String SQL_SELECT_WS_AT_COL = |
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61 "SELECT km, w FROM wst_w_values " + |
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62 "WHERE wst_id = :wst_id AND column_pos = :column_pos"; |
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63 |
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64 |
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65 private WstValueTableFactory() { |
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66 } |
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67 |
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68 |
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69 public static WstValueTable getTable(River river) { |
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70 return getTable(river, DEFAULT_KIND); |
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71 } |
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72 |
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73 |
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74 /** |
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75 * Get WstValueTable to interpolate values of a given Wst. |
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76 */ |
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77 public static WstValueTable getTable(int wst_id) { |
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78 |
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79 Cache cache = CacheFactory.getCache(WstValueTableCacheKey.CACHE_NAME); |
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80 |
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81 WstValueTableCacheKey cacheKey; |
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82 |
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83 if (cache != null) { |
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84 // "-1" is the symbolic river-id for "no river, but wst_id". |
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85 cacheKey = new WstValueTableCacheKey(-1, wst_id); |
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86 Element element = cache.get(cacheKey); |
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87 if (element != null) { |
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88 log.debug("Got specific wst value table from cache"); |
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89 return (WstValueTable) element.getValue(); |
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90 } |
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91 } |
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92 else { |
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93 cacheKey = null; |
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94 } |
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95 |
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96 Session session = SessionHolder.HOLDER.get(); |
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97 |
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98 // Fetch data for one column only. |
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99 |
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100 WstValueTable.Column [] columns = loadColumns(session, wst_id); |
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101 loadQRanges(session, columns, wst_id); |
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102 List<WstValueTable.Row> rows = loadRows(session, wst_id, columns.length); |
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103 |
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104 WstValueTable valueTable = new WstValueTable(columns, rows); |
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105 |
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106 if (valueTable != null && cacheKey != null) { |
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107 log.debug("Store wst value table in cache"); |
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108 Element element = new Element(cacheKey, valueTable); |
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109 cache.put(element); |
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110 } |
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111 |
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112 return valueTable; |
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113 } |
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114 |
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115 /** |
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116 * Get Table for a specific column of a wst. |
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117 */ |
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118 public static WstValueTable getWstColumnTable(int wst_id, int col_pos) { |
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119 |
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120 Cache cache = CacheFactory.getCache(WstValueTableCacheKey.CACHE_NAME); |
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121 |
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122 WstValueTableCacheKey cacheKey; |
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123 |
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124 if (cache != null) { |
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125 // A negaitve/negative number is the symbolic 'river-id' for |
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126 // "no river and kind but wst_id and colpos". |
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127 cacheKey = new WstValueTableCacheKey(-wst_id, -col_pos); |
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128 Element element = cache.get(cacheKey); |
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129 if (element != null) { |
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130 log.debug("Got specific wst value table from cache"); |
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131 return (WstValueTable) element.getValue(); |
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132 } |
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133 } |
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134 else { |
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135 cacheKey = null; |
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136 } |
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137 |
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138 Session session = SessionHolder.HOLDER.get(); |
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139 |
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140 // Fetch data for one column only. |
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141 |
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142 WstValueTable.Column [] columns = loadColumn(session, wst_id, col_pos); |
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143 loadQRanges(session, columns, wst_id, col_pos); |
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144 List<WstValueTable.Row> rows = loadRowsOneColumn(session, wst_id, col_pos); |
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145 |
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146 WstValueTable valueTable = new WstValueTable(columns, rows); |
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147 |
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148 if (valueTable != null && cacheKey != null) { |
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149 log.debug("Store wst value table in cache (wst: " |
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150 + wst_id + "/ col: " + col_pos + ")"); |
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151 Element element = new Element(cacheKey, valueTable); |
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152 cache.put(element); |
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153 } |
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154 |
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155 return valueTable; |
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156 } |
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157 |
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158 |
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159 /** |
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160 * Get table for first wst of given kind at given river. |
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161 */ |
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162 public static WstValueTable getTable(River river, int kind) { |
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163 |
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164 Cache cache = CacheFactory.getCache(WstValueTableCacheKey.CACHE_NAME); |
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165 |
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166 WstValueTableCacheKey cacheKey; |
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167 |
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168 if (cache != null) { |
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169 cacheKey = new WstValueTableCacheKey(river.getId(), kind); |
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170 Element element = cache.get(cacheKey); |
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171 if (element != null) { |
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172 log.debug("got wst value table from cache"); |
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173 return (WstValueTable)element.getValue(); |
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174 } |
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175 } |
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176 else { |
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177 cacheKey = null; |
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178 } |
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179 |
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180 WstValueTable valueTable = getTableUncached(river, kind); |
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181 |
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182 if (valueTable != null && cacheKey != null) { |
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183 log.debug("store wst value table in cache"); |
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184 Element element = new Element(cacheKey, valueTable); |
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185 cache.put(element); |
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186 } |
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187 |
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188 return valueTable; |
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189 } |
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190 |
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191 public static WstValueTable getTableUncached(River river) { |
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192 return getTableUncached(river, DEFAULT_KIND); |
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193 } |
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194 |
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195 public static WstValueTable getTableUncached(River river, int kind) { |
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196 |
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197 Session session = SessionHolder.HOLDER.get(); |
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198 |
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199 Wst wst = loadWst(session, river, kind); |
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200 |
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201 if (wst == null) { |
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202 return null; |
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203 } |
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204 |
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205 WstValueTable.Column [] columns = loadColumns(session, wst); |
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206 |
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207 loadQRanges(session, columns, wst); |
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208 |
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209 List<WstValueTable.Row> rows = loadRows(session, wst, columns.length); |
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210 |
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211 return new WstValueTable(columns, rows); |
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212 } |
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213 |
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214 /** |
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215 * @param kind Kind of wst. |
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216 */ |
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217 protected static Wst loadWst(Session session, River river, int kind) { |
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218 Query query = session.createQuery(HQL_WST); |
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219 query.setParameter("river", river); |
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220 query.setInteger("kind", kind); |
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221 |
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222 List<Wst> wsts = query.list(); |
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223 |
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224 // TODO Multiple wsts can match, why return just the first one? |
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225 return wsts.isEmpty() ? null : wsts.get(0); |
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226 } |
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227 |
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228 |
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229 /** |
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230 * Load rows with a single columns result. |
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231 * |
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232 * @param session session to use for querying db. |
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233 * @param wstId id of wst (in db). |
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234 * @param column_pos the column_pos (within the db) of the wst_value_table |
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235 * of which the values shall be fetched. |
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236 * |
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237 * @return resultant rows. |
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238 */ |
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239 protected static List<WstValueTable.Row> loadRowsOneColumn( |
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240 Session session, |
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241 int wstId, |
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242 int column_pos |
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243 ) { |
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244 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_WS_AT_COL) |
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245 .addScalar("km", StandardBasicTypes.DOUBLE) |
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246 .addScalar("w", StandardBasicTypes.DOUBLE); |
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247 |
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248 sqlQuery.setInteger("wst_id", wstId); |
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249 sqlQuery.setInteger("column_pos", column_pos); |
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250 |
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251 List<Object []> results = sqlQuery.list(); |
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252 |
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253 double [] ws = null; |
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254 |
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255 List<WstValueTable.Row> rows = |
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256 new ArrayList<WstValueTable.Row>(results.size()); |
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257 |
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258 // Walk over rows. |
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259 for (Object [] result: results) { |
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260 ws = new double[1]; |
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261 WstValueTable.Row row = |
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262 new WstValueTable.Row((Double) result[0], ws); |
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263 rows.add(row); |
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264 |
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265 Double w = (Double) result[1]; |
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266 ws[0] = w != null ? w : Double.NaN; |
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267 } |
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268 |
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269 return rows; |
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270 } |
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271 |
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272 protected static List<WstValueTable.Row> loadRows( |
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273 Session session, |
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274 int wst_id, |
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275 int numColumns |
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276 ) { |
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277 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_WS) |
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278 .addScalar("km", StandardBasicTypes.DOUBLE) |
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279 .addScalar("w", StandardBasicTypes.DOUBLE) |
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280 .addScalar("column_pos", StandardBasicTypes.INTEGER); |
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281 |
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282 sqlQuery.setInteger("wst_id", wst_id); |
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283 |
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284 List<Object []> results = sqlQuery.list(); |
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285 |
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286 int lastColumn = Integer.MAX_VALUE; |
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287 double [] ws = null; |
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288 |
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289 ArrayList<WstValueTable.Row> rows = new ArrayList<WstValueTable.Row>(); |
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290 |
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291 for (Object [] result: results) { |
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292 int column = (Integer)result[2]; |
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293 if (column < lastColumn) { |
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294 ws = new double[numColumns]; |
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295 Arrays.fill(ws, Double.NaN); |
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296 WstValueTable.Row row = |
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297 new WstValueTable.Row((Double)result[0], ws); |
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298 rows.add(row); |
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299 } |
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300 Double w = (Double)result[1]; |
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301 ws[column] = w != null ? w : Double.NaN; |
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302 lastColumn = column; |
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303 } |
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304 |
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305 rows.trimToSize(); |
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306 return rows; |
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307 } |
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308 |
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309 protected static List<WstValueTable.Row> loadRows( |
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310 Session session, |
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311 Wst wst, |
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312 int numColumns |
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313 ) { |
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314 return loadRows(session, wst.getId(), numColumns); |
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315 } |
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316 |
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317 |
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318 protected static WstValueTable.Column [] loadColumn( |
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319 Session session, |
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320 int wst_id, |
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321 int col_pos |
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322 ) { |
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323 return new WstValueTable.Column [] { |
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324 new WstValueTable.Column(WKmsFactory.getWKmsName(col_pos, wst_id))}; |
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325 } |
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326 |
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327 |
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328 /** |
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329 * Get columns from wst-id. |
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330 */ |
633
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331 protected static WstValueTable.Column [] loadColumns( |
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332 Session session, |
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333 int wst_id |
633
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334 ) { |
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335 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_NAMES_POS) |
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336 .addScalar("position", StandardBasicTypes.INTEGER) |
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337 .addScalar("name", StandardBasicTypes.STRING); |
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338 |
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339 sqlQuery.setInteger("wst_id", wst_id); |
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340 |
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341 List<Object []> columnNames = sqlQuery.list(); |
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342 |
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343 WstValueTable.Column [] columns = |
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344 new WstValueTable.Column[columnNames.size()]; |
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345 |
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346 for (int i = 0; i < columns.length; ++i) { |
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347 columns[i] = new WstValueTable.Column( |
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348 (String)columnNames.get(i)[1]); |
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349 } |
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350 return columns; |
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351 } |
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352 |
1839
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353 /** |
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354 * Get columns from Wst. |
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355 */ |
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356 protected static WstValueTable.Column [] loadColumns( |
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357 Session session, |
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358 Wst wst |
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359 ) { |
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360 return loadColumns(session, wst.getId()); |
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361 } |
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362 |
1909
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363 |
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364 /** |
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365 * Build a QRange-Tree. |
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366 */ |
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367 protected static void loadQRanges( |
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368 Session session, |
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369 WstValueTable.Column [] columns, |
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370 int wst_id, |
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371 int column_pos |
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372 ) { |
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373 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_QS_AT_COL) |
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374 .addScalar("q", StandardBasicTypes.DOUBLE) |
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375 .addScalar("a", StandardBasicTypes.DOUBLE) |
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376 .addScalar("b", StandardBasicTypes.DOUBLE); |
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377 |
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378 sqlQuery.setInteger("wst_id", wst_id); |
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379 sqlQuery.setInteger("column_pos", column_pos); |
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380 |
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381 List<Object []> qRanges = sqlQuery.list(); |
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382 |
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383 int qSize = qRanges.size(); |
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384 |
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385 QRangeTree qRangeTree = new QRangeTree( |
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386 qRanges, QRangeTree.WITHOUT_COLUMN, 0, qSize); |
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387 columns[0].setQRangeTree(qRangeTree); |
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388 } |
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389 |
633
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390 protected static void loadQRanges( |
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391 Session session, |
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392 WstValueTable.Column [] columns, |
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393 int wst_id |
633
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394 ) { |
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395 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_QS) |
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396 .addScalar("column_pos", StandardBasicTypes.INTEGER) |
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397 .addScalar("q", StandardBasicTypes.DOUBLE) |
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398 .addScalar("a", StandardBasicTypes.DOUBLE) |
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399 .addScalar("b", StandardBasicTypes.DOUBLE); |
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400 |
1839
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|
401 sqlQuery.setInteger("wst_id", wst_id); |
633
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402 |
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403 List<Object []> qRanges = sqlQuery.list(); |
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WST value table: Qs are now stored in ranges for each column.
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404 |
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405 int start = -1; |
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406 int Q = qRanges.size(); |
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407 Integer lastColumn = null; |
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408 |
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409 for (int i = 0; i < Q; ++i) { |
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410 Object [] qRange = qRanges.get(i); |
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411 Integer columnId = (Integer)qRange[0]; |
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412 if (lastColumn == null) { |
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413 lastColumn = columnId; |
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414 start = i; |
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415 } |
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416 else if (!lastColumn.equals(columnId)) { |
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417 QRangeTree qRangeTree = new QRangeTree(qRanges, start, i); |
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418 columns[lastColumn].setQRangeTree(qRangeTree); |
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419 lastColumn = columnId; |
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420 start = i; |
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421 } |
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422 } |
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423 |
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424 if (start != -1) { |
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425 QRangeTree qRangeTree = new QRangeTree(qRanges, start, Q); |
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426 columns[lastColumn].setQRangeTree(qRangeTree); |
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427 } |
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428 |
742
c09c9e05ecfa
Removed trailing whitespace.
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429 /* This is debug code to visualize the q ranges trees |
633
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430 |
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431 java.io.PrintWriter out = null; |
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432 try { |
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433 out = new java.io.PrintWriter( |
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434 new java.io.FileWriter( |
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435 "/tmp/qranges" + System.currentTimeMillis() + ".dot")); |
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436 |
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437 out.println("graph \"Q ranges trees\" {"); |
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438 |
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439 for (int i = 0; i < columns.length; ++i) { |
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440 QRangeTree tree = columns[i].getQRangeTree(); |
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441 out.println(tree.toGraph()); |
443
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Separated the WST table loading logic from the calculations.
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442 } |
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Separated the WST table loading logic from the calculations.
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443 |
633
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444 out.println("}"); |
443
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Separated the WST table loading logic from the calculations.
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445 |
633
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446 out.flush(); |
443
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Separated the WST table loading logic from the calculations.
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447 } |
633
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448 catch (java.io.IOException ioe) { |
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449 log.error(ioe); |
443
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Separated the WST table loading logic from the calculations.
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450 } |
633
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451 finally { |
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452 if (out != null) { |
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453 out.close(); |
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454 } |
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455 } |
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456 */ |
3076
5642a83420f2
FLYS artifacts: Removed trailing whitespace.
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diff
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|
457 |
1839
c3b44da22a3a
Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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diff
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|
458 } |
c3b44da22a3a
Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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459 |
c3b44da22a3a
Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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460 protected static void loadQRanges( |
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Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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461 Session session, |
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Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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462 WstValueTable.Column [] columns, |
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Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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|
463 Wst wst |
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Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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464 ) { |
c3b44da22a3a
Minor refactoring in preparation of generation of interpolators (WstValueTable) for static WQKms.
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parents:
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465 loadQRanges(session, columns, wst.getId()); |
633
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466 } |
443
5d65fe4c08d5
Separated the WST table loading logic from the calculations.
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467 |
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Separated the WST table loading logic from the calculations.
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468 } |
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Separated the WST table loading logic from the calculations.
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469 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |