Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/WaterlevelDifferencesParser.java @ 5229:016616df35dc

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WaterlevelDifferencesParser: In analogy to WaterlevelParser, allow model conversion to Wst.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Mon, 11 Mar 2013 15:08:13 +0100
parents f63b39799d2d
children fb7d43ba8147
rev   line source
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a1402c16152f Added a parser and importer classes used to import waterlevel differences.
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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 import de.intevation.flys.importer.ImportWaterlevelDifference;
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17 import de.intevation.flys.importer.ImportWaterlevelDifferenceColumn;
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18 import de.intevation.flys.importer.ImportWaterlevelDifferenceValue;
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19
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20 import de.intevation.flys.importer.ImportWst;
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21 import de.intevation.flys.importer.ImportWstColumn;
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22
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23
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24 /**
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25 * Parse WaterlevelDifferences CSV file.
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26 */
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27 public class WaterlevelDifferencesParser extends LineParser {
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28
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29 private static final Logger log =
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30 Logger.getLogger(WaterlevelDifferencesParser.class);
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31
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32 private static final NumberFormat nf =
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33 NumberFormat.getInstance(DEFAULT_LOCALE);
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34
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35 public static final Pattern META_UNIT =
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36 Pattern.compile("^Einheit: \\[(.*)\\].*");
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37
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38
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39 private List<ImportWaterlevelDifference> differences;
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40
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41 private ImportWaterlevelDifferenceColumn[] columns;
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42
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43 private ImportWaterlevelDifference current;
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44
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45
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46 public WaterlevelDifferencesParser() {
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47 differences = new ArrayList<ImportWaterlevelDifference>();
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48 }
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49
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51 public List<ImportWaterlevelDifference> getDifferences() {
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52 return differences;
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53 }
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54
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55 public List<ImportWst> exportWsts() {
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56 List<ImportWst> wsts = new ArrayList<ImportWst>();
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57 for(ImportWaterlevelDifference waterlevel: getDifferences()) {
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58 String description = waterlevel.getDescription();
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59 ImportWst wst = new ImportWst();
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60 wsts.add(wst);
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61 wst.setDescription(description);
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62 // Fixation kind.
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63 wst.setKind(7);
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64 wst.setUnit(waterlevel.getUnit());
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65 wst.setNumberColumns(waterlevel.getColumns().size());
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66
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67 int i = 0;
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68 for (ImportWaterlevelDifferenceColumn wdc: waterlevel.getColumns()) {
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69 ImportWstColumn column = wst.getColumn(i);
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70 column.setDescription(wdc.getDescription());
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71 column.setName(wdc.getDescription());
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72 column.setPosition(i);
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73 for (ImportWaterlevelDifferenceValue val: wdc.getValues()) {
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74 column.addColumnValue(BigDecimal.valueOf(val.getStation()),
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75 BigDecimal.valueOf(val.getValue()));
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76
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77 }
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78 i++;
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79 }
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80 }
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81 return wsts;
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82 }
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83
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84
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85 @Override
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86 public void parse(File file) throws IOException {
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87 current = new ImportWaterlevelDifference(file.getName());
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88
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89 super.parse(file);
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90 }
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91
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92
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93 @Override
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94 protected void reset() {
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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 (columns != null && current != null) {
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101 for (ImportWaterlevelDifferenceColumn col: columns) {
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102 current.addValue(col);
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103 }
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104
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105 differences.add(current);
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106 }
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107
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108 current = null;
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109 columns = null;
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110 }
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111
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112 @Override
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113 protected void handleLine(int lineNum, String line) {
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114 if (line.startsWith(START_META_CHAR)) {
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115 handleMetaLine(stripMetaLine(line));
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116 }
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117 else {
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118 handleDataLine(line);
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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 private void handleMetaLine(String meta) {
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124 if (handleMetaUnit(meta)) {
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125 return;
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126 }
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127 else {
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128 handleMetaColumnNames(meta);
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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 handleMetaUnit(String meta) {
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134 Matcher m = META_UNIT.matcher(meta);
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135
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136 if (m.matches()) {
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137 String unit = m.group(1);
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138 log.debug("Found unit: '" + unit + "'");
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139
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140 current.setUnit(new ImportUnit(unit));
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141
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142 return true;
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143 }
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144
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145 return false;
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146 }
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147
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148
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149 private boolean handleMetaColumnNames(String meta) {
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150 Pattern META_COLUMN_NAMES = Pattern.compile("Fluss-km;(.*)");
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151 Matcher m = META_COLUMN_NAMES.matcher(meta);
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152
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153 if (m.matches()) {
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154 String colStr = m.group(1);
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155 String[] cols = colStr.split(SEPERATOR_CHAR);
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156
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157 log.debug("Found " + cols.length + " columns.");
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158
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159 initColumns(cols);
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160
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161 return true;
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162 }
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163
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164 return false;
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165 }
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166
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167
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168 private void initColumns(String[] cols) {
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169 columns = new ImportWaterlevelDifferenceColumn[cols.length];
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170
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171 for (int i = 0; i < cols.length; i++) {
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172 String name = cols[i].replace("\"", "");
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173
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174 log.debug("Create new column '" + name + "'");
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175 columns[i] = new ImportWaterlevelDifferenceColumn(name);
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176 }
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177 }
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178
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179
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180 private void handleDataLine(String line) {
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181 String[] cols = line.split(SEPERATOR_CHAR);
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182
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183 if (cols == null || cols.length < 2) {
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184 log.warn("skip invalid waterlevel line: '" + line + "'");
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185 return;
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186 }
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187
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188 try {
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189 Double station = nf.parse(cols[0]).doubleValue();
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190
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191 for (int i = 0; i < columns.length; i++) {
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192 int idx = i+1;
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193
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194 if (idx >= cols.length) {
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195 log.warn("Insufficient column numbers: " + line);
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196 continue;
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197 }
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198
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199 String value = cols[idx];
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200
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201 try {
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202 columns[i].addValue(new ImportWaterlevelDifferenceValue(
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203 station,
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204 nf.parse(value).doubleValue()
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205 ));
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206 }
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207 catch (ParseException pe) {
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208 log.warn("Error while parsing value: '" + value + "'");
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209 }
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210 }
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211 }
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212 catch (ParseException pe) {
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213 log.warn("Error while parsing station: '" + line + "'");
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214 }
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215 }
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216 }
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217 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org