Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/WstParser.java @ 1216:f8b5c37f15e4
Fixes for the HYK parser
flys-backend/trunk@2342 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Sun, 17 Jul 2011 10:00:13 +0000 |
parents | f08fe480092c |
children | f834b411ca57 |
rev | line source |
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1211
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1 package de.intevation.flys.importer.parsers; |
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2 |
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3 import java.util.ArrayList; |
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4 import java.util.HashSet; |
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5 |
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6 import java.io.File; |
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7 import java.io.IOException; |
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8 import java.io.LineNumberReader; |
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9 import java.io.InputStreamReader; |
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10 import java.io.FileInputStream; |
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11 |
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12 import java.text.NumberFormat; |
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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.utils.StringUtil; |
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17 |
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18 import java.util.regex.Pattern; |
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19 import java.util.regex.Matcher; |
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20 |
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21 import java.math.BigDecimal; |
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22 |
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23 import de.intevation.flys.importer.ImportWstQRange; |
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24 import de.intevation.flys.importer.ImportWstColumn; |
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25 import de.intevation.flys.importer.ImportRange; |
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26 import de.intevation.flys.importer.ImportWst; |
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27 |
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28 public class WstParser |
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29 { |
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30 private static Logger log = Logger.getLogger(WstParser.class); |
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31 |
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32 public static final String COLUMN_BEZ_TEXT = "column-bez-text"; |
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33 public static final String COLUMN_BEZ_BREITE = "column-bez-breite"; |
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34 public static final String COLUMN_QUELLE = "column-quelle"; |
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35 public static final String COLUMN_DATUM = "column-datum"; |
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36 |
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37 public static final BigDecimal UNDEFINED_ZERO = |
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38 new BigDecimal(0.0); |
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39 public static final BigDecimal MIN_RANGE = |
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40 new BigDecimal(-Double.MAX_VALUE); |
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41 public static final BigDecimal MAX_RANGE = |
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42 new BigDecimal(Double.MAX_VALUE); |
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43 |
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44 public static final String ENCODING = "ISO-8859-1"; |
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45 |
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46 public static final Pattern UNIT_COMMENT = |
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47 Pattern.compile("\\*\\s*[kK][mM]\\s+(.+)"); |
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48 |
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49 public static final Pattern UNIT = |
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50 Pattern.compile("[^\\[]*\\[([^]]+)\\].*"); |
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51 |
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52 public static final BigDecimal INTERVAL_GAP = |
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53 new BigDecimal(0.00001); |
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54 |
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55 protected ImportWst wst; |
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56 |
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57 protected ImportRange lastRange; |
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58 |
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59 public WstParser() { |
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60 } |
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61 |
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62 public ImportWst getWst() { |
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63 return wst; |
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64 } |
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65 |
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66 public void setWst(ImportWst wst) { |
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67 this.wst = wst; |
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68 } |
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69 |
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70 public void parse(File file) throws IOException { |
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71 |
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72 log.info("Parsing WST file '" + file + "'"); |
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73 |
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74 wst = new ImportWst(file.getName()); |
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75 |
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76 LineNumberReader in = null; |
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77 try { |
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78 in = |
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79 new LineNumberReader( |
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80 new InputStreamReader( |
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81 new FileInputStream(file), ENCODING)); |
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82 |
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83 String input; |
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84 boolean first = true; |
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85 int columnCount = 0; |
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86 |
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87 String [] lsBezeichner = null; |
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88 String [] langBezeichner = null; |
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89 int [] colNaWidths = null; |
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90 String [] quellen = null; |
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91 String [] daten = null; |
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92 |
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93 BigDecimal [] aktAbfluesse = null; |
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94 BigDecimal [] firstAbfluesse = null; |
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95 |
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96 BigDecimal minKm = MAX_RANGE; |
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97 BigDecimal maxKm = MIN_RANGE; |
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98 |
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99 boolean columnHeaderChecked = false; |
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100 |
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101 String einheit = "Wasserstand [NN + m]"; |
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102 |
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103 HashSet<BigDecimal> kms = new HashSet<BigDecimal>(); |
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104 |
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105 while ((input = in.readLine()) != null) { |
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106 String line = input; |
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107 if (first) { // fetch number of columns |
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108 if ((line = line.trim()).length() == 0) { |
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109 continue; |
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110 } |
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111 try { |
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112 columnCount = Integer.parseInt(line); |
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113 if (columnCount <= 0) { |
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114 throw new NumberFormatException( |
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115 "number columns <= 0"); |
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116 } |
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117 log.debug("Number of columns: " + columnCount); |
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118 wst.setNumberColumns(columnCount); |
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119 lsBezeichner = new String[columnCount]; |
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120 } |
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121 catch (NumberFormatException nfe) { |
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122 log.warn(nfe); |
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123 continue; |
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124 } |
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125 first = false; |
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126 continue; |
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127 } |
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128 |
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129 line = line.replace(',', '.'); |
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130 |
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131 if (line.startsWith("*\u001f")) { |
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132 BigDecimal [] data = |
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133 parseLineAsDouble(line, columnCount, false, true); |
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134 |
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135 if (aktAbfluesse != null) { |
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136 addInterval(minKm, maxKm, aktAbfluesse); |
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137 minKm = MAX_RANGE; |
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138 maxKm = MIN_RANGE; |
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139 } |
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140 |
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141 aktAbfluesse = new BigDecimal[columnCount]; |
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142 log.debug("new q range: " + columnCount); |
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143 for (int i = 0; i < Math.min(columnCount, data.length); ++i) { |
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144 if (data[i] != null) { |
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145 log.debug(" column: " + data[i]); |
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146 aktAbfluesse[i] = data[i]; |
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147 } |
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148 } |
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149 |
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150 if (firstAbfluesse == null) { |
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151 firstAbfluesse = (BigDecimal [])aktAbfluesse.clone(); |
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152 } |
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153 continue; |
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154 } |
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155 |
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|
156 if (line.startsWith("*!")) { |
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157 String spezial = line.substring(2).trim(); |
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158 |
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159 if (spezial.length() == 0) { |
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|
160 continue; |
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|
161 } |
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162 |
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|
163 if (spezial.startsWith(COLUMN_BEZ_TEXT)) { |
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164 spezial = spezial.substring(COLUMN_BEZ_TEXT.length()).trim(); |
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165 if (spezial.length() == 0) { |
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|
166 continue; |
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167 } |
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168 langBezeichner = StringUtil.splitQuoted(spezial, '"'); |
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169 } |
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|
170 else if (spezial.startsWith(COLUMN_BEZ_BREITE)) { |
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171 spezial = spezial.substring(COLUMN_BEZ_BREITE.length()).trim(); |
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172 |
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|
173 if (spezial.length() == 0) { |
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|
174 continue; |
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|
175 } |
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176 |
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177 String[] split = spezial.split("\\s+"); |
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178 |
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179 colNaWidths = new int[split.length]; |
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180 for (int i=0; i < split.length; i++) { |
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181 colNaWidths[i] = Integer.parseInt(split[i]); |
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182 } |
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|
183 } |
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|
184 else if (spezial.startsWith(COLUMN_QUELLE)) { |
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|
185 if (spezial.length() == 0) { |
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|
186 continue; |
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|
187 } |
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|
188 quellen = StringUtil.splitQuoted(spezial, '"'); |
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|
189 } |
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|
190 else if (spezial.startsWith(COLUMN_DATUM)) { |
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191 spezial = spezial.substring(COLUMN_DATUM.length()).trim(); |
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|
192 if (spezial.length() == 0) { |
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|
193 continue; |
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|
194 } |
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|
195 daten = StringUtil.splitQuoted(spezial, '"'); |
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|
196 } |
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|
197 continue; |
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|
198 } |
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|
199 |
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|
200 if (line.length() < 11) { |
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|
201 continue; |
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|
202 } |
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|
203 |
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|
204 if (line.startsWith("*")) { |
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|
205 Matcher m = UNIT_COMMENT.matcher(line); |
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|
206 if (m.matches()) { |
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|
207 log.debug("unit comment found"); |
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|
208 // XXX: This hack is needed because desktop |
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|
209 // FLYS is broken figuring out the unit |
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|
210 String [] units = m.group(1).split("\\s{2,}"); |
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|
211 m = UNIT.matcher(units[0]); |
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|
212 einheit = m.matches() ? m.group(1) : units[0]; |
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|
213 log.debug("unit: " + einheit); |
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|
214 } |
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|
215 continue; |
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|
216 } |
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|
217 |
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|
218 if (firstAbfluesse != null) { |
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|
219 if (!columnHeaderChecked) { |
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changeset
|
220 int unknownCount = 0; |
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|
221 HashSet<String> uniqueColumnNames = |
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changeset
|
222 new HashSet<String>(); |
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changeset
|
223 for (int i = 0; i < lsBezeichner.length; ++i) { |
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changeset
|
224 if (lsBezeichner[i] == null |
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changeset
|
225 || lsBezeichner[i].length() == 0) { |
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changeset
|
226 double q = firstAbfluesse[i].doubleValue(); |
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changeset
|
227 if (q < 0.001) { |
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changeset
|
228 lsBezeichner[i] = |
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changeset
|
229 "<unbekannt #" + unknownCount + ">"; |
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|
230 ++unknownCount; |
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|
231 } |
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|
232 else { |
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changeset
|
233 lsBezeichner[i] = "Q="+format(q); |
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234 } |
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235 } |
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236 String candidate = lsBezeichner[i]; |
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237 int collision = 1; |
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238 while (!uniqueColumnNames.add(candidate)) { |
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239 candidate = lsBezeichner[i] + |
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240 " (" + collision + ")"; |
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241 ++collision; |
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242 } |
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243 wst.getColumn(i).setName(candidate); |
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244 } |
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245 columnHeaderChecked = true; |
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246 } |
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247 |
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248 BigDecimal [] data = |
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249 parseLineAsDouble(line, columnCount, true, false); |
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250 |
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251 BigDecimal kaem = data[0]; |
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252 |
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253 if (!kms.add(kaem)) { |
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254 log.warn( |
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255 "km " + kaem + |
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256 " (line " + in.getLineNumber() + |
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257 ") found more than once. -> ignored"); |
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258 continue; |
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259 } |
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260 |
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261 if (kaem.compareTo(minKm) < 0) { |
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262 minKm = kaem; |
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263 } |
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|
264 if (kaem.compareTo(maxKm) > 0) { |
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265 maxKm = kaem; |
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266 } |
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267 |
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268 // extract values |
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269 for (int i = 0; i < columnCount; ++i) { |
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270 addValue(kaem, data[i+1], i); |
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271 } |
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272 |
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|
273 } |
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274 else { // firstAbfluesse == null |
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275 if (langBezeichner != null) { |
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276 lsBezeichner = StringUtil.fitArray( |
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277 langBezeichner, lsBezeichner); |
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278 } |
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|
279 else if (colNaWidths != null) { |
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280 for (int j = 0, i = 0, N = input.length(); |
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281 j < colNaWidths.length && i < N; |
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282 i += colNaWidths[j++] |
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283 ) { |
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|
284 lsBezeichner[j] = input.substring( |
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285 i, i+colNaWidths[j]).trim(); |
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|
286 } |
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|
287 } |
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|
288 else { |
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289 // first column begins at position 8 in line |
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290 for (int i = 8, col = 0; i < input.length(); i += 9) { |
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291 if ((i + 9) > input.length()) { |
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292 i = input.length() - 10; |
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293 } |
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294 // one column header is 9 chars wide |
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295 lsBezeichner[col++] = |
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296 input.substring(i, i + 9).trim(); |
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297 |
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298 if (col == lsBezeichner.length) { |
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299 break; |
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|
300 } |
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|
301 } |
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|
302 } |
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|
303 } |
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|
304 |
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|
305 } |
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|
306 addInterval(minKm, maxKm, aktAbfluesse); |
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|
307 } |
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|
308 finally { |
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|
309 if (in != null) { |
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310 in.close(); |
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|
311 } |
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|
312 } |
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|
313 } |
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|
314 |
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|
315 protected void addValue(BigDecimal km, BigDecimal w, int index) { |
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|
316 if (w != null) { |
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|
317 ImportWstColumn column = wst.getColumn(index); |
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|
318 column.addColumnValue(km, w); |
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|
319 } |
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changeset
|
320 } |
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|
321 |
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|
322 private static final NumberFormat NF = getNumberFormat(); |
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|
323 |
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|
324 private static final NumberFormat getNumberFormat() { |
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|
325 NumberFormat nf = NumberFormat.getInstance(); |
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326 nf.setMinimumFractionDigits(2); |
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|
327 nf.setMaximumFractionDigits(2); |
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|
328 return nf; |
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|
329 } |
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|
330 |
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|
331 protected static String format(double value) { |
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|
332 return NF.format(value); |
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changeset
|
333 } |
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|
334 |
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changeset
|
335 protected void addInterval( |
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|
336 BigDecimal from, |
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|
337 BigDecimal to, |
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|
338 BigDecimal [] values |
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|
339 ) { |
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|
340 log.debug("addInterval: " + from + " " + to); |
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|
341 |
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|
342 if (values == null || from == MAX_RANGE) { |
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changeset
|
343 return; |
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changeset
|
344 } |
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|
345 |
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changeset
|
346 if (to.compareTo(from) < 0) { |
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changeset
|
347 BigDecimal t = from; from = to; to = t; |
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|
348 } |
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|
349 |
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changeset
|
350 ImportRange range = new ImportRange(from, to); |
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|
351 |
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changeset
|
352 // little workaround to make the q ranges tightly fit. |
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353 // Leave a very small gap to ensure that the range queries |
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354 // still work. |
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355 |
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356 if (lastRange != null) { |
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357 double d1 = Math.abs( |
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358 lastRange.getB().doubleValue() - range.getA().doubleValue()); |
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359 double d2 = Math.abs( |
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360 range.getB().doubleValue() - lastRange.getA().doubleValue()); |
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361 |
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362 if (d1 < d2) { |
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363 lastRange.setB(range.getA().subtract(INTERVAL_GAP)); |
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364 } |
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365 else { |
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366 range.setA(lastRange.getB().subtract(INTERVAL_GAP)); |
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367 } |
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368 } |
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369 |
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370 for (int i = 0; i < values.length; ++i) { |
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371 ImportWstColumn column = wst.getColumn(i); |
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372 ImportWstQRange wstQRange = new ImportWstQRange(range, values[i]); |
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373 column.addColumnQRange(wstQRange); |
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374 } |
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375 |
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376 lastRange = range; |
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377 } |
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378 |
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379 private static final BigDecimal [] parseLineAsDouble( |
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380 String line, |
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381 int count, |
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382 boolean bStation, |
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383 boolean bParseEmptyAsZero |
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384 ) { |
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385 String [] tokens = parseLine(line, count, bStation); |
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386 |
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387 BigDecimal [] doubles = new BigDecimal[tokens.length]; |
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388 |
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389 for (int i = 0; i < doubles.length; ++i) { |
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390 String token = tokens[i].trim(); |
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391 if (token.length() != 0) { |
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392 doubles[i] = new BigDecimal(token); |
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393 } |
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394 else if (bParseEmptyAsZero) { |
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395 doubles[i] = UNDEFINED_ZERO; |
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396 } |
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397 } |
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398 |
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399 return doubles; |
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400 } |
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401 |
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402 private static String [] parseLine( |
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403 String line, |
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404 int tokenCount, |
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405 boolean bParseStation |
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406 ) { |
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407 ArrayList<String> strings = new ArrayList<String>(); |
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408 |
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409 if (bParseStation) { |
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410 if (line.length() < 8) { |
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411 throw new IllegalArgumentException("station too short"); |
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412 } |
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413 strings.add(line.substring(0, 8)); |
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414 } |
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415 |
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416 int pos = 9; |
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417 for (int i = 0; i < tokenCount; ++i) { |
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418 if (line.length() >= pos + 8) { |
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419 strings.add(line.substring(pos, pos + 8)); |
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420 } |
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421 else { |
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422 strings.add(""); |
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423 } |
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424 pos += 9; |
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425 } |
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426 |
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427 return strings.toArray(new String[strings.size()]); |
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428 } |
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429 } |
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430 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |