Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/WaterlevelParser.java @ 5263:db341e37d194
ImportWst: Doc and getters.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Wed, 13 Mar 2013 10:05:47 +0100 |
parents | 93d4145d5740 |
children | 731030b69c7e |
rev | line source |
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Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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1 package de.intevation.flys.importer.parsers; |
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2 |
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3 import java.io.File; |
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4 import java.io.IOException; |
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5 import java.math.BigDecimal; |
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6 import java.text.NumberFormat; |
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7 import java.text.ParseException; |
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8 import java.util.ArrayList; |
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9 import java.util.List; |
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10 import java.util.regex.Matcher; |
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11 import java.util.regex.Pattern; |
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12 |
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13 import org.apache.log4j.Logger; |
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14 |
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15 import de.intevation.flys.importer.ImportUnit; |
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16 |
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17 import de.intevation.flys.importer.ImportRange; |
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18 import de.intevation.flys.importer.ImportWst; |
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19 import de.intevation.flys.importer.ImportWstColumn; |
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20 import de.intevation.flys.importer.ImportWstColumnValue; |
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21 import de.intevation.flys.importer.ImportWstQRange; |
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22 |
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23 |
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24 /** |
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25 * Parse CSV Waterlevel files. |
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26 * As these waterlevels are probably used in fixation analysis |
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27 * only, functionality to export them to "fixation"-wsts |
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28 * has been added (the ImportWaterlevel*- stuff is actually |
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29 * not needed to do so.) |
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30 */ |
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31 public class WaterlevelParser extends LineParser { |
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32 |
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33 private static final Logger log = Logger.getLogger(WaterlevelParser.class); |
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34 |
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35 private static final NumberFormat nf = |
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36 NumberFormat.getInstance(DEFAULT_LOCALE); |
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37 |
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38 private static final Pattern META_Q_RANGE = |
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39 Pattern.compile("Abfluss\\s\\[(.*)\\];(.*)"); |
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40 |
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41 public static final Pattern META_UNIT = |
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42 Pattern.compile("^Einheit: \\[(.*)\\].*"); |
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43 |
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44 private List<ImportWst> waterlevels; |
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45 |
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46 private ImportWst current; |
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47 |
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48 /** The Waterlevel-Wst s will always have but one column. */ |
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49 private ImportWstColumn column; |
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50 |
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51 /** The current (incomplete) Q Range. */ |
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52 private ImportWstQRange currentQRange; |
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53 |
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54 /** The current (incomplete) km range for Q Range. */ |
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55 private ImportRange currentRange; |
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56 |
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57 private String currentDescription; |
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58 |
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59 |
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60 public WaterlevelParser() { |
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61 waterlevels = new ArrayList<ImportWst>(); |
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62 } |
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63 |
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64 |
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65 public List<ImportWst> getWaterlevels() { |
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66 return waterlevels; |
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67 } |
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68 |
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69 |
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70 @Override |
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71 public void parse(File file) throws IOException { |
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72 currentDescription = file.getName(); |
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73 |
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74 super.parse(file); |
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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 protected void reset() { |
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80 currentQRange = null; |
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81 current = new ImportWst(currentDescription); |
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82 column = new ImportWstColumn(current, |
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83 currentDescription, |
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84 currentDescription, |
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85 0); |
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86 current.setKind(6); |
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87 } |
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88 |
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89 |
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90 @Override |
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91 protected void finish() { |
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92 if (current != null) { |
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93 if (currentQRange != null) { |
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94 List<ImportWstColumnValue> cValues = column.getColumnValues(); |
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95 // Set end of range to last station. |
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96 currentRange.setB(cValues.get(cValues.size() -1).getPosition()); |
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97 currentQRange.setRange(currentRange); |
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98 column.addColumnQRange(currentQRange); |
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99 } |
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100 |
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101 waterlevels.add(current); |
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102 } |
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103 } |
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104 |
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105 @Override |
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106 protected void handleLine(int lineNum, String line) { |
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107 if (line.startsWith(START_META_CHAR)) { |
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108 handleMetaLine(stripMetaLine(line)); |
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109 return; |
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110 } |
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111 else if (handleQRange(line)) { |
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112 return; |
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113 } |
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114 else { |
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115 handleDataLine(line); |
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116 return; |
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117 } |
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118 } |
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119 |
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120 |
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121 private void handleMetaLine(String meta) { |
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122 Matcher m = META_UNIT.matcher(meta); |
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123 |
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124 if (m.matches()) { |
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125 String unit = m.group(1); |
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126 log.debug("Found unit: '" + unit + "'"); |
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127 |
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128 current.setUnit(new ImportUnit(unit)); |
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129 } |
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130 } |
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131 |
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132 |
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133 private boolean handleQRange(String line) { |
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134 Matcher m = META_Q_RANGE.matcher(line); |
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135 |
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136 if (m.matches()) { |
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137 String unitStr = m.group(1); |
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138 String valueStr = m.group(2); |
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139 try { |
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140 if (currentQRange != null) { |
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141 // Finish off the last one. |
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142 List<ImportWstColumnValue> cValues = column.getColumnValues(); |
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143 // Set end of range to last station. |
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144 currentRange.setB(cValues.get(cValues.size() -1).getPosition()); |
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145 currentQRange.setRange(currentRange); |
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146 column.addColumnQRange(currentQRange); |
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147 } |
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148 currentQRange = new ImportWstQRange(null, |
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149 new BigDecimal(nf.parse(valueStr).doubleValue())); |
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150 currentRange = new ImportRange(); |
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151 |
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152 log.debug("Found new Q range: Q=" + valueStr); |
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153 |
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154 return true; |
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155 } |
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156 catch (ParseException pe) { |
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157 log.warn("Error while parsing Q range: '" + line + "'"); |
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158 } |
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159 } |
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160 |
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161 return false; |
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162 } |
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163 |
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164 |
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165 private void handleDataLine(String line) { |
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166 String[] cols = line.split(SEPERATOR_CHAR); |
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167 |
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168 if (cols == null || cols.length < 2) { |
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169 log.warn("skip invalid waterlevel line: '" + line + "'"); |
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170 return; |
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171 } |
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172 |
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173 try { |
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174 // Store the value and remember the position for QRange, if needed. |
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175 Double station = nf.parse(cols[0]).doubleValue(); |
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176 Double value = nf.parse(cols[1]).doubleValue(); |
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177 |
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178 BigDecimal stationBD = new BigDecimal(station); |
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179 |
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180 column.addColumnValue(stationBD, new BigDecimal(value)); |
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181 |
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182 if (currentRange.getA() == null) { |
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183 currentRange.setA(stationBD); |
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184 } |
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185 } |
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Completed the MINFO waterlevel import.
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186 catch (ParseException pe) { |
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187 log.warn("Error while parsing number values: '" + line + "'"); |
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188 } |
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Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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189 } |
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Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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190 } |
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Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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|
191 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |