Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/WstParser.java @ 5541:b09c095a0b7e
WST Importer: Potential fix for tighten gaps between Q ranges.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Wed, 03 Apr 2013 17:59:11 +0200 |
parents | 0d27d02b1208 |
children | f3b270e5462e |
rev | line source |
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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 import de.intevation.flys.utils.DateGuesser; |
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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.math.BigDecimal; |
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23 |
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24 import de.intevation.flys.importer.ImportWstQRange; |
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25 import de.intevation.flys.importer.ImportWstColumn; |
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26 import de.intevation.flys.importer.ImportTimeInterval; |
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27 import de.intevation.flys.importer.ImportRange; |
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28 import de.intevation.flys.importer.ImportUnit; |
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29 import de.intevation.flys.importer.ImportWst; |
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30 |
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31 public class WstParser |
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32 { |
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33 private static Logger log = Logger.getLogger(WstParser.class); |
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34 |
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35 public static final String COLUMN_BEZ_TEXT = "column-bez-text"; |
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36 public static final String COLUMN_BEZ_BREITE = "column-bez-breite"; |
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37 public static final String COLUMN_QUELLE = "column-quelle"; |
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38 public static final String COLUMN_DATUM = "column-datum"; |
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39 |
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40 public static final BigDecimal UNDEFINED_ZERO = |
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41 new BigDecimal(0.0); |
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42 public static final BigDecimal MIN_RANGE = |
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43 new BigDecimal(-Double.MAX_VALUE); |
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44 public static final BigDecimal MAX_RANGE = |
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45 new BigDecimal(Double.MAX_VALUE); |
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46 |
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47 public static final String ENCODING = "ISO-8859-1"; |
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48 |
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49 public static final Pattern UNIT_COMMENT = |
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50 Pattern.compile("\\*\\s*[kK][mM]\\s+(.+)"); |
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51 |
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52 public static final Pattern UNIT = |
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53 Pattern.compile("[^\\[]*\\[([^]]+)\\].*"); |
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54 |
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WST Importer: Potential fix for tighten gaps between Q ranges.
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55 public static final double INTERVAL_GAP = 0.00001d; |
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56 |
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57 protected ImportWst wst; |
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58 |
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59 protected ImportRange lastRange; |
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60 |
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61 public WstParser() { |
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62 } |
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63 |
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64 public ImportWst getWst() { |
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65 return wst; |
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66 } |
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67 |
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68 public void setWst(ImportWst wst) { |
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69 this.wst = wst; |
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70 } |
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71 |
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72 public ImportTimeInterval guessDate(String string) { |
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73 try { |
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74 return new ImportTimeInterval( |
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75 DateGuesser.guessDate(string)); |
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76 } |
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77 catch (IllegalArgumentException iae) { |
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78 } |
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79 return null; |
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80 } |
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81 |
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82 public void parse(File file) throws IOException { |
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83 |
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84 log.info("Parsing WST file '" + file + "'"); |
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85 |
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86 wst = new ImportWst(file.getName()); |
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87 |
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88 LineNumberReader in = null; |
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89 try { |
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90 in = |
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91 new LineNumberReader( |
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92 new InputStreamReader( |
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93 new FileInputStream(file), ENCODING)); |
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94 |
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95 String input; |
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96 boolean first = true; |
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97 int columnCount = 0; |
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98 |
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99 String [] lsBezeichner = null; |
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100 String [] langBezeichner = null; |
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101 int [] colNaWidths = null; |
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102 String [] quellen = null; |
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103 String [] daten = null; |
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104 |
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105 BigDecimal [] aktAbfluesse = null; |
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106 BigDecimal [] firstAbfluesse = null; |
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107 |
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108 BigDecimal minKm = MAX_RANGE; |
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109 BigDecimal maxKm = MIN_RANGE; |
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110 |
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111 boolean columnHeaderChecked = false; |
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112 |
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113 String einheit = "Wasserstand [NN + m]"; |
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114 |
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115 HashSet<BigDecimal> kms = new HashSet<BigDecimal>(); |
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116 |
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117 while ((input = in.readLine()) != null) { |
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118 String line = input; |
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119 if (first) { // fetch number of columns |
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120 if ((line = line.trim()).length() == 0) { |
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121 continue; |
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122 } |
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123 try { |
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124 columnCount = Integer.parseInt(line); |
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125 if (columnCount <= 0) { |
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126 throw new NumberFormatException( |
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127 "number columns <= 0"); |
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128 } |
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129 log.debug("Number of columns: " + columnCount); |
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130 wst.setNumberColumns(columnCount); |
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131 lsBezeichner = new String[columnCount]; |
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132 } |
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133 catch (NumberFormatException nfe) { |
3662
0d27d02b1208
backend: Completed the error messages of the importer.
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134 log.warn("WST: invalid number.", nfe); |
1211
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135 continue; |
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136 } |
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137 first = false; |
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138 continue; |
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139 } |
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140 |
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141 line = line.replace(',', '.'); |
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142 |
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143 if (line.startsWith("*\u001f")) { |
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144 BigDecimal [] data = |
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145 parseLineAsDouble(line, columnCount, false, true); |
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146 |
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147 if (aktAbfluesse != null) { |
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148 addInterval(minKm, maxKm, aktAbfluesse); |
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149 minKm = MAX_RANGE; |
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150 maxKm = MIN_RANGE; |
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151 } |
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152 |
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153 aktAbfluesse = new BigDecimal[columnCount]; |
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154 log.debug("new q range: " + columnCount); |
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155 for (int i = 0; i < Math.min(columnCount, data.length); ++i) { |
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156 if (data[i] != null) { |
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157 log.debug(" column: " + data[i]); |
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158 aktAbfluesse[i] = data[i]; |
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159 } |
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|
160 } |
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161 |
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162 if (firstAbfluesse == null) { |
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163 firstAbfluesse = (BigDecimal [])aktAbfluesse.clone(); |
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164 } |
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|
165 continue; |
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|
166 } |
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167 |
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168 if (line.startsWith("*!")) { |
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169 String spezial = line.substring(2).trim(); |
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170 |
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171 if (spezial.length() == 0) { |
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172 continue; |
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173 } |
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174 |
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175 if (spezial.startsWith(COLUMN_BEZ_TEXT)) { |
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176 spezial = spezial.substring(COLUMN_BEZ_TEXT.length()).trim(); |
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177 if (spezial.length() == 0) { |
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178 continue; |
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179 } |
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180 langBezeichner = StringUtil.splitQuoted(spezial, '"'); |
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181 } |
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|
182 else if (spezial.startsWith(COLUMN_BEZ_BREITE)) { |
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183 spezial = spezial.substring(COLUMN_BEZ_BREITE.length()).trim(); |
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184 |
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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 |
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189 String[] split = spezial.split("\\s+"); |
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190 |
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|
191 colNaWidths = new int[split.length]; |
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|
192 for (int i=0; i < split.length; i++) { |
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193 colNaWidths[i] = Integer.parseInt(split[i]); |
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194 } |
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|
195 } |
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|
196 else if (spezial.startsWith(COLUMN_QUELLE)) { |
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|
197 if (spezial.length() == 0) { |
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|
198 continue; |
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|
199 } |
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|
200 quellen = StringUtil.splitQuoted(spezial, '"'); |
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|
201 } |
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|
202 else if (spezial.startsWith(COLUMN_DATUM)) { |
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|
203 spezial = spezial.substring(COLUMN_DATUM.length()).trim(); |
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|
204 if (spezial.length() == 0) { |
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|
205 continue; |
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changeset
|
206 } |
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|
207 daten = StringUtil.splitQuoted(spezial, '"'); |
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|
208 } |
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|
209 continue; |
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|
210 } |
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|
211 |
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|
212 if (line.length() < 11) { |
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|
213 continue; |
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|
214 } |
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|
215 |
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|
216 if (line.startsWith("*")) { |
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|
217 Matcher m = UNIT_COMMENT.matcher(line); |
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|
218 if (m.matches()) { |
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|
219 log.debug("unit comment found"); |
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|
220 // XXX: This hack is needed because desktop |
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|
221 // FLYS is broken figuring out the unit |
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|
222 String [] units = m.group(1).split("\\s{2,}"); |
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|
223 m = UNIT.matcher(units[0]); |
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|
224 einheit = m.matches() ? m.group(1) : units[0]; |
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|
225 log.debug("unit: " + einheit); |
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|
226 } |
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|
227 continue; |
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|
228 } |
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|
229 |
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|
230 if (firstAbfluesse != null) { |
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changeset
|
231 if (!columnHeaderChecked) { |
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changeset
|
232 int unknownCount = 0; |
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233 HashSet<String> uniqueColumnNames = |
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234 new HashSet<String>(); |
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235 for (int i = 0; i < lsBezeichner.length; ++i) { |
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236 if (lsBezeichner[i] == null |
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237 || lsBezeichner[i].length() == 0) { |
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238 double q = firstAbfluesse[i].doubleValue(); |
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239 if (q < 0.001) { |
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240 lsBezeichner[i] = |
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241 "<unbekannt #" + unknownCount + ">"; |
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242 ++unknownCount; |
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243 } |
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|
244 else { |
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245 lsBezeichner[i] = "Q="+format(q); |
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246 } |
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|
247 } |
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|
248 String candidate = lsBezeichner[i]; |
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249 int collision = 1; |
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250 while (!uniqueColumnNames.add(candidate)) { |
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251 candidate = lsBezeichner[i] + |
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252 " (" + collision + ")"; |
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253 ++collision; |
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254 } |
2357
2e18e12fac11
Added date guesser for WST columns.
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diff
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|
255 ImportWstColumn iwc = wst.getColumn(i); |
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|
256 iwc.setName(candidate); |
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|
257 iwc.setTimeInterval(guessDate(candidate)); |
1211
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258 } |
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259 columnHeaderChecked = true; |
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260 } |
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261 |
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|
262 BigDecimal [] data = |
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263 parseLineAsDouble(line, columnCount, true, false); |
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264 |
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265 BigDecimal kaem = data[0]; |
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266 |
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|
267 if (!kms.add(kaem)) { |
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|
268 log.warn( |
3662
0d27d02b1208
backend: Completed the error messages of the importer.
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|
269 "WST: km " + kaem + |
1211
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270 " (line " + in.getLineNumber() + |
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271 ") found more than once. -> ignored"); |
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272 continue; |
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|
273 } |
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274 |
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|
275 if (kaem.compareTo(minKm) < 0) { |
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|
276 minKm = kaem; |
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|
277 } |
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|
278 if (kaem.compareTo(maxKm) > 0) { |
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|
279 maxKm = kaem; |
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|
280 } |
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|
281 |
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282 // extract values |
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|
283 for (int i = 0; i < columnCount; ++i) { |
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|
284 addValue(kaem, data[i+1], i); |
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|
285 } |
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|
286 |
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|
287 } |
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|
288 else { // firstAbfluesse == null |
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changeset
|
289 if (langBezeichner != null) { |
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changeset
|
290 lsBezeichner = StringUtil.fitArray( |
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changeset
|
291 langBezeichner, lsBezeichner); |
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|
292 } |
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|
293 else if (colNaWidths != null) { |
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|
294 for (int j = 0, i = 0, N = input.length(); |
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|
295 j < colNaWidths.length && i < N; |
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|
296 i += colNaWidths[j++] |
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|
297 ) { |
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|
298 lsBezeichner[j] = input.substring( |
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|
299 i, i+colNaWidths[j]).trim(); |
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|
300 } |
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|
301 } |
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|
302 else { |
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changeset
|
303 // first column begins at position 8 in line |
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|
304 for (int i = 8, col = 0; i < input.length(); i += 9) { |
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changeset
|
305 if ((i + 9) > input.length()) { |
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|
306 i = input.length() - 10; |
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|
307 } |
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changeset
|
308 // one column header is 9 chars wide |
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changeset
|
309 lsBezeichner[col++] = |
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changeset
|
310 input.substring(i, i + 9).trim(); |
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|
311 |
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changeset
|
312 if (col == lsBezeichner.length) { |
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changeset
|
313 break; |
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changeset
|
314 } |
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changeset
|
315 } |
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parents:
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changeset
|
316 } |
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parents:
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changeset
|
317 } |
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|
318 |
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parents:
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changeset
|
319 } |
2346
f834b411ca57
Added db table, model class and importer stuff for units.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
1211
diff
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|
320 |
f834b411ca57
Added db table, model class and importer stuff for units.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
1211
diff
changeset
|
321 wst.setUnit(new ImportUnit(einheit)); |
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Added db table, model class and importer stuff for units.
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|
322 |
1211
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|
323 addInterval(minKm, maxKm, aktAbfluesse); |
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changeset
|
324 } |
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parents:
diff
changeset
|
325 finally { |
f08fe480092c
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changeset
|
326 if (in != null) { |
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|
327 in.close(); |
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changeset
|
328 } |
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changeset
|
329 } |
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parents:
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changeset
|
330 } |
f08fe480092c
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changeset
|
331 |
f08fe480092c
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parents:
diff
changeset
|
332 protected void addValue(BigDecimal km, BigDecimal w, int index) { |
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diff
changeset
|
333 if (w != null) { |
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parents:
diff
changeset
|
334 ImportWstColumn column = wst.getColumn(index); |
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changeset
|
335 column.addColumnValue(km, w); |
f08fe480092c
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changeset
|
336 } |
f08fe480092c
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
337 } |
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changeset
|
338 |
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parents:
diff
changeset
|
339 private static final NumberFormat NF = getNumberFormat(); |
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changeset
|
340 |
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parents:
diff
changeset
|
341 private static final NumberFormat getNumberFormat() { |
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diff
changeset
|
342 NumberFormat nf = NumberFormat.getInstance(); |
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changeset
|
343 nf.setMinimumFractionDigits(2); |
f08fe480092c
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parents:
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changeset
|
344 nf.setMaximumFractionDigits(2); |
f08fe480092c
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changeset
|
345 return nf; |
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changeset
|
346 } |
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parents:
diff
changeset
|
347 |
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parents:
diff
changeset
|
348 protected static String format(double value) { |
f08fe480092c
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|
349 return NF.format(value); |
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changeset
|
350 } |
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351 |
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352 protected void addInterval( |
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353 BigDecimal from, |
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354 BigDecimal to, |
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355 BigDecimal [] values |
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356 ) { |
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357 log.debug("addInterval: " + from + " " + to); |
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358 |
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359 if (values == null || from == MAX_RANGE) { |
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360 return; |
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361 } |
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362 |
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363 if (to.compareTo(from) < 0) { |
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364 BigDecimal t = from; from = to; to = t; |
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365 } |
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366 |
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367 ImportRange range = new ImportRange(from, to); |
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368 |
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369 // little workaround to make the q ranges tightly fit. |
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370 // Leave a very small gap to ensure that the range queries |
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371 // still work. |
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372 |
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373 if (lastRange != null) { |
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374 double a1 = lastRange.getA().doubleValue(); |
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375 double b1 = lastRange.getB().doubleValue(); |
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376 double a2 = range.getA().doubleValue(); |
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377 |
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378 if (a1 < b1) { |
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379 lastRange.setB(new BigDecimal(a2 - INTERVAL_GAP)); |
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380 } |
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381 else { // a1 >= b1 |
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382 lastRange.setB(new BigDecimal(a2 + INTERVAL_GAP)); |
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383 } |
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384 } |
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385 |
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386 for (int i = 0; i < values.length; ++i) { |
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387 ImportWstColumn column = wst.getColumn(i); |
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388 ImportWstQRange wstQRange = new ImportWstQRange(range, values[i]); |
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389 column.addColumnQRange(wstQRange); |
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390 } |
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391 |
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392 lastRange = range; |
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393 } |
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394 |
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395 private static final BigDecimal [] parseLineAsDouble( |
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396 String line, |
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397 int count, |
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398 boolean bStation, |
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399 boolean bParseEmptyAsZero |
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400 ) { |
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401 String [] tokens = parseLine(line, count, bStation); |
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402 |
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403 BigDecimal [] doubles = new BigDecimal[tokens.length]; |
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404 |
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405 for (int i = 0; i < doubles.length; ++i) { |
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406 String token = tokens[i].trim(); |
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407 if (token.length() != 0) { |
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408 doubles[i] = new BigDecimal(token); |
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409 } |
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410 else if (bParseEmptyAsZero) { |
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411 doubles[i] = UNDEFINED_ZERO; |
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412 } |
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413 } |
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414 |
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415 return doubles; |
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416 } |
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417 |
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418 private static String [] parseLine( |
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419 String line, |
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420 int tokenCount, |
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421 boolean bParseStation |
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422 ) { |
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423 ArrayList<String> strings = new ArrayList<String>(); |
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424 |
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425 if (bParseStation) { |
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426 if (line.length() < 8) { |
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427 throw new IllegalArgumentException("station too short"); |
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428 } |
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429 strings.add(line.substring(0, 8)); |
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430 } |
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|
431 |
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432 int pos = 9; |
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433 for (int i = 0; i < tokenCount; ++i) { |
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434 if (line.length() >= pos + 8) { |
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|
435 strings.add(line.substring(pos, pos + 8)); |
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|
436 } |
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|
437 else { |
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|
438 strings.add(""); |
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|
439 } |
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|
440 pos += 9; |
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|
441 } |
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|
442 |
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443 return strings.toArray(new String[strings.size()]); |
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444 } |
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|
445 } |
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|
446 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |