Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/importer/parsers/WaterlevelParser.java @ 6291:33ccce4a3aae
WaterlevelDifferencesParser: issue1354/1, set timeintervals from waterdiff-csvs.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Wed, 12 Jun 2013 11:52:19 +0200 |
parents | 62dca91ca229 |
children | 550cb41d37d9 |
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.importer.parsers; |
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10 |
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11 import java.io.File; |
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12 import java.io.IOException; |
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13 import java.math.BigDecimal; |
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14 import java.text.NumberFormat; |
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15 import java.text.ParseException; |
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16 import java.util.ArrayList; |
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17 import java.util.List; |
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18 import java.util.regex.Matcher; |
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19 import java.util.regex.Pattern; |
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20 |
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21 import org.apache.log4j.Logger; |
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22 |
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23 import org.dive4elements.river.importer.ImportUnit; |
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24 |
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25 import org.dive4elements.river.importer.ImportRange; |
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26 import org.dive4elements.river.importer.ImportWst; |
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27 import org.dive4elements.river.importer.ImportWstColumn; |
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28 import org.dive4elements.river.importer.ImportWstColumnValue; |
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29 import org.dive4elements.river.importer.ImportWstQRange; |
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30 |
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31 |
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32 /** |
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33 * Parse CSV Waterlevel files. |
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34 * As these waterlevels are probably used in fixation analysis |
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35 * only, functionality to export them to "fixation"-wsts |
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36 * has been added (the ImportWaterlevel*- stuff is actually |
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37 * not needed to do so.) |
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38 */ |
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39 public class WaterlevelParser extends LineParser { |
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40 |
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41 private static final Logger log = Logger.getLogger(WaterlevelParser.class); |
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42 |
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43 private static final NumberFormat nf = |
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44 NumberFormat.getInstance(DEFAULT_LOCALE); |
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45 |
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46 private static final Pattern META_Q_RANGE = |
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47 Pattern.compile("Abfluss\\s\\[(.*)\\];(.*)"); |
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48 |
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49 public static final Pattern META_UNIT = |
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50 Pattern.compile("^Einheit: \\[(.*)\\].*"); |
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51 |
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52 private List<ImportWst> waterlevels; |
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53 |
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54 private ImportWst current; |
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55 |
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56 /** The Waterlevel-Wst s will always have but one column. */ |
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57 private ImportWstColumn column; |
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58 |
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59 /** The current (incomplete) Q Range. */ |
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60 private ImportWstQRange currentQRange; |
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61 |
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62 /** The current (incomplete) km range for Q Range. */ |
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63 private ImportRange currentRange; |
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64 |
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65 private String currentDescription; |
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66 |
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67 |
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68 public WaterlevelParser() { |
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69 waterlevels = new ArrayList<ImportWst>(); |
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70 } |
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71 |
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72 |
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73 public List<ImportWst> getWaterlevels() { |
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74 return waterlevels; |
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75 } |
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76 |
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77 |
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78 @Override |
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79 public void parse(File file) throws IOException { |
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80 currentDescription = file.getName(); |
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81 |
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82 super.parse(file); |
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83 } |
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84 |
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85 |
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86 @Override |
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87 protected void reset() { |
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88 currentQRange = null; |
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89 current = new ImportWst(currentDescription); |
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90 current.setNumberColumns(1); |
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91 column = current.getColumn(0); |
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92 column.setName(currentDescription); |
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93 column.setDescription(currentDescription); |
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94 current.setKind(7); |
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95 } |
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96 |
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97 |
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98 @Override |
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99 protected void finish() { |
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100 if (current != null) { |
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101 if (currentQRange != null) { |
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102 List<ImportWstColumnValue> cValues = column.getColumnValues(); |
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103 // Set end of range to last station. |
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104 currentRange.setB(cValues.get(cValues.size() -1).getPosition()); |
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105 currentQRange.setRange(currentRange); |
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106 column.addColumnQRange(currentQRange); |
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107 } |
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108 |
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109 waterlevels.add(current); |
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110 } |
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111 } |
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112 |
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113 @Override |
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114 protected void handleLine(int lineNum, String line) { |
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115 if (line.startsWith(START_META_CHAR)) { |
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116 handleMetaLine(stripMetaLine(line)); |
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117 return; |
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118 } |
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119 else if (handleQRange(line)) { |
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120 return; |
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121 } |
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122 else { |
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123 handleDataLine(line); |
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124 return; |
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125 } |
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126 } |
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127 |
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128 |
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129 private void handleMetaLine(String meta) { |
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130 Matcher m = META_UNIT.matcher(meta); |
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131 |
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132 if (m.matches()) { |
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133 String unit = m.group(1); |
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134 log.debug("Found unit: '" + unit + "'"); |
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135 |
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136 current.setUnit(new ImportUnit(unit)); |
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137 } |
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138 } |
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139 |
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140 |
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141 private boolean handleQRange(String line) { |
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142 Matcher m = META_Q_RANGE.matcher(line); |
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143 |
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144 if (m.matches()) { |
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145 String unitStr = m.group(1); |
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146 String valueStr = m.group(2); |
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147 try { |
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148 if (currentQRange != null) { |
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149 // Finish off the last one. |
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150 List<ImportWstColumnValue> cValues = column.getColumnValues(); |
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151 // Set end of range to last station. |
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152 currentRange.setB(cValues.get(cValues.size() -1).getPosition()); |
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153 currentQRange.setRange(currentRange); |
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154 column.addColumnQRange(currentQRange); |
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155 } |
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156 currentQRange = new ImportWstQRange(null, |
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157 new BigDecimal(nf.parse(valueStr).doubleValue())); |
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158 currentRange = new ImportRange(); |
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159 |
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160 log.debug("Found new Q range: Q=" + valueStr); |
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161 |
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162 return true; |
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163 } |
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164 catch (ParseException pe) { |
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165 log.warn("Unparseable Q range: '" + line + "'"); |
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166 } |
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167 } |
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168 |
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169 return false; |
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170 } |
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171 |
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|
172 |
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173 private void handleDataLine(String line) { |
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174 String[] cols = line.split(SEPERATOR_CHAR); |
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175 |
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176 if (cols == null || cols.length < 2) { |
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177 log.warn("skip invalid waterlevel line: '" + line + "'"); |
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178 return; |
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179 } |
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180 |
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181 try { |
5240
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182 // Store the value and remember the position for QRange, if needed. |
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183 Double station = nf.parse(cols[0]).doubleValue(); |
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184 Double value = nf.parse(cols[1]).doubleValue(); |
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185 |
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186 BigDecimal stationBD = new BigDecimal(station); |
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187 |
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188 column.addColumnValue(stationBD, new BigDecimal(value)); |
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189 |
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190 if (currentRange.getA() == null) { |
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191 currentRange.setA(stationBD); |
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192 } |
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193 } |
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Completed the MINFO waterlevel import.
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194 catch (ParseException pe) { |
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195 log.warn("Unparseable number in data row: " + line); |
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196 } |
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197 } |
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198 } |
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Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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|
199 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |