Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/importer/parsers/StaFileParser.java @ 6328:53d08f33d094
Backend: Moved guessing of main values and there time intervals out of the STA parser. Same come will be useful to extend the WST parser to better handle official lines.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Thu, 13 Jun 2013 17:15:34 +0200 |
parents | ec54bb4fe407 |
children | b58a71a5720c |
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.io.LineNumberReader; |
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14 import java.io.FileInputStream; |
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15 import java.io.InputStreamReader; |
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16 |
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17 import java.math.BigDecimal; |
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18 |
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19 import java.util.regex.Pattern; |
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20 import java.util.regex.Matcher; |
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21 |
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22 import java.util.HashMap; |
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23 import java.util.ArrayList; |
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24 |
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25 import org.apache.log4j.Logger; |
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26 |
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27 import org.dive4elements.river.importer.ImportMainValueType; |
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28 import org.dive4elements.river.importer.ImportMainValue; |
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29 import org.dive4elements.river.importer.ImportNamedMainValue; |
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30 import org.dive4elements.river.importer.ImportGauge; |
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31 |
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32 public class StaFileParser |
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33 { |
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34 private static Logger log = Logger.getLogger(StaFileParser.class); |
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35 |
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36 public static final String ENCODING = "ISO-8859-1"; |
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37 |
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38 public static final String TYPES = |
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39 System.getProperty("flys.backend.main.value.types", "QWTD"); |
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40 |
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41 public static final Pattern QWTD_ = |
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42 Pattern.compile("\\s*([^\\s]+)\\s+([^\\s]+)\\s+([" + |
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43 Pattern.quote(TYPES) + "]).*"); |
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44 |
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45 |
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46 public StaFileParser() { |
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47 } |
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48 |
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49 public boolean parse(ImportGauge gauge) throws IOException { |
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50 |
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51 File file = gauge.getStaFile(); |
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52 |
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53 log.info("parsing STA file: " + file); |
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54 LineNumberReader in = null; |
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55 try { |
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56 in = |
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57 new LineNumberReader( |
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58 new InputStreamReader( |
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59 new FileInputStream(file), ENCODING)); |
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60 |
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61 String line = in.readLine(); |
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62 |
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63 if (line == null) { |
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64 log.warn("STA file is empty."); |
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65 return false; |
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66 } |
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67 |
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68 if (line.length() < 37) { |
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69 log.warn("First line in STA file is too short."); |
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70 return false; |
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71 } |
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72 |
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73 String gaugeName = line.substring(16, 35).trim(); |
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74 |
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75 Long gaugeNumber = null; |
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76 |
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77 String gaugeNumberString = line.substring(8, 16).trim(); |
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78 |
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79 try { |
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80 gaugeNumber = Long.parseLong(gaugeNumberString); |
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81 } |
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82 catch (NumberFormatException nfe) { |
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83 log.warn("STA: gauge number '" + gaugeNumberString + |
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84 "' is not a valid long number."); |
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85 } |
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86 |
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87 gauge.setName(gaugeName); |
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88 gauge.setOfficialNumber(gaugeNumber); |
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89 |
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90 if (log.isDebugEnabled()) { |
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91 log.debug( |
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92 "name/number: '" + gaugeName + "' '" + gaugeNumber + "'"); |
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93 } |
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94 |
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95 String [] values = line.substring(38).trim().split("\\s+", 2); |
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96 |
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97 if (values.length < 2) { |
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98 log.warn("STA: Not enough columns for aeo and datum."); |
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99 } |
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100 try { |
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101 gauge.setAeo(new BigDecimal(values[0].replace(",", "."))); |
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102 gauge.setDatum(new BigDecimal(values[1].replace(",", "."))); |
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103 } |
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104 catch (NumberFormatException nfe) { |
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105 log.warn("STA: cannot parse aeo or datum."); |
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106 return false; |
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107 } |
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108 |
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109 line = in.readLine(); |
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110 |
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111 if (line == null) { |
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112 log.warn("STA file has not enough lines"); |
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113 return false; |
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114 } |
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115 |
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116 if (line.length() < 36) { |
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117 log.warn("STA: second line is too short"); |
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118 return false; |
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119 } |
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120 |
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121 try { |
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122 gauge.setStation( |
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123 new BigDecimal(line.substring(29, 36).trim())); |
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124 } |
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125 catch (NumberFormatException nfe) { |
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126 log.warn("STA: parsing of the datum of the gauge failed"); |
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127 return false; |
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128 } |
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129 |
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130 // overread the next six lines |
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131 for (int i = 0; i < 6; ++i) { |
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132 if ((line = in.readLine()) == null) { |
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133 log.warn("STA file is too short"); |
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134 return false; |
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135 } |
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136 } |
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137 |
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138 HashMap<String, ImportMainValueType> types = |
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139 new HashMap<String, ImportMainValueType>(); |
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140 |
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141 ArrayList<ImportNamedMainValue> namedMainValues = |
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142 new ArrayList<ImportNamedMainValue>(); |
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143 |
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144 ArrayList<ImportMainValue> mainValues = |
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145 new ArrayList<ImportMainValue>(); |
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146 |
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147 while ((line = in.readLine()) != null) { |
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148 Matcher m = QWTD_.matcher(line); |
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149 if (m.matches()) { |
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150 BigDecimal value; |
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151 try { |
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152 value = new BigDecimal(m.group(2).replace(",", ".")); |
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153 } |
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154 catch (NumberFormatException nfe) { |
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155 log.warn("STA: value not parseable in line " |
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156 + in.getLineNumber()); |
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157 continue; |
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158 } |
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159 String typeString = m.group(3); |
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160 log.debug("\t type: " + typeString); |
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161 ImportMainValueType type = types.get(typeString); |
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162 if (type == null) { |
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163 type = new ImportMainValueType(typeString); |
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164 types.put(typeString, type); |
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165 } |
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166 String name = m.group(1); |
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167 NameAndTimeInterval nat = |
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168 NameAndTimeInterval.parseName(name); |
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169 ImportNamedMainValue namedMainValue = |
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170 new ImportNamedMainValue(type, nat.getName()); |
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171 namedMainValues.add(namedMainValue); |
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172 |
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173 ImportMainValue mainValue = new ImportMainValue( |
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174 gauge, |
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175 namedMainValue, |
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176 value, |
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177 nat.getTimeInterval()); |
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178 |
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179 mainValues.add(mainValue); |
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180 } |
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181 else { |
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182 // TODO: treat as a comment |
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183 } |
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184 } |
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185 gauge.setMainValueTypes( |
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186 new ArrayList<ImportMainValueType>(types.values())); |
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187 gauge.setNamedMainValues(namedMainValues); |
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188 gauge.setMainValues(mainValues); |
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189 } |
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190 finally { |
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191 if (in != null) { |
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192 in.close(); |
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193 } |
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194 } |
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195 log.info("finished parsing STA file: " + file); |
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196 return true; |
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197 } |
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198 |
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199 } |
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200 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |