Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/WstParser.java @ 5507:db6c7268b08e
Schema change: add shore offset to sediment density values and be more rigid with input files in parser
author | Tom Gottfried <tom.gottfried@intevation.de> |
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date | Thu, 28 Mar 2013 16:41:30 +0100 |
parents | 0d27d02b1208 |
children | b09c095a0b7e |
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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55 public static final BigDecimal INTERVAL_GAP = |
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56 new BigDecimal(0.00001); |
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57 |
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58 protected ImportWst wst; |
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59 |
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60 protected ImportRange lastRange; |
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61 |
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62 public WstParser() { |
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63 } |
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64 |
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65 public ImportWst getWst() { |
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66 return wst; |
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67 } |
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68 |
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69 public void setWst(ImportWst wst) { |
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70 this.wst = wst; |
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71 } |
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72 |
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73 public ImportTimeInterval guessDate(String string) { |
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74 try { |
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75 return new ImportTimeInterval( |
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76 DateGuesser.guessDate(string)); |
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77 } |
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78 catch (IllegalArgumentException iae) { |
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79 } |
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80 return null; |
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81 } |
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82 |
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83 public void parse(File file) throws IOException { |
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84 |
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85 log.info("Parsing WST file '" + file + "'"); |
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86 |
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87 wst = new ImportWst(file.getName()); |
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88 |
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89 LineNumberReader in = null; |
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90 try { |
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91 in = |
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92 new LineNumberReader( |
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93 new InputStreamReader( |
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94 new FileInputStream(file), ENCODING)); |
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95 |
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96 String input; |
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97 boolean first = true; |
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98 int columnCount = 0; |
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99 |
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100 String [] lsBezeichner = null; |
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101 String [] langBezeichner = null; |
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102 int [] colNaWidths = null; |
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103 String [] quellen = null; |
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104 String [] daten = null; |
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105 |
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106 BigDecimal [] aktAbfluesse = null; |
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107 BigDecimal [] firstAbfluesse = null; |
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108 |
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109 BigDecimal minKm = MAX_RANGE; |
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110 BigDecimal maxKm = MIN_RANGE; |
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111 |
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112 boolean columnHeaderChecked = false; |
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113 |
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114 String einheit = "Wasserstand [NN + m]"; |
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115 |
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116 HashSet<BigDecimal> kms = new HashSet<BigDecimal>(); |
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117 |
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118 while ((input = in.readLine()) != null) { |
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119 String line = input; |
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120 if (first) { // fetch number of columns |
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121 if ((line = line.trim()).length() == 0) { |
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122 continue; |
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123 } |
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124 try { |
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125 columnCount = Integer.parseInt(line); |
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126 if (columnCount <= 0) { |
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127 throw new NumberFormatException( |
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128 "number columns <= 0"); |
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129 } |
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130 log.debug("Number of columns: " + columnCount); |
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131 wst.setNumberColumns(columnCount); |
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132 lsBezeichner = new String[columnCount]; |
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133 } |
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|
134 catch (NumberFormatException nfe) { |
3662
0d27d02b1208
backend: Completed the error messages of the importer.
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135 log.warn("WST: invalid number.", nfe); |
1211
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136 continue; |
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137 } |
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138 first = false; |
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139 continue; |
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140 } |
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141 |
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142 line = line.replace(',', '.'); |
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143 |
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144 if (line.startsWith("*\u001f")) { |
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145 BigDecimal [] data = |
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146 parseLineAsDouble(line, columnCount, false, true); |
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147 |
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148 if (aktAbfluesse != null) { |
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149 addInterval(minKm, maxKm, aktAbfluesse); |
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150 minKm = MAX_RANGE; |
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151 maxKm = MIN_RANGE; |
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152 } |
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153 |
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154 aktAbfluesse = new BigDecimal[columnCount]; |
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155 log.debug("new q range: " + columnCount); |
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156 for (int i = 0; i < Math.min(columnCount, data.length); ++i) { |
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|
157 if (data[i] != null) { |
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|
158 log.debug(" column: " + data[i]); |
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|
159 aktAbfluesse[i] = data[i]; |
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160 } |
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|
161 } |
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162 |
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|
163 if (firstAbfluesse == null) { |
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|
164 firstAbfluesse = (BigDecimal [])aktAbfluesse.clone(); |
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165 } |
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|
166 continue; |
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|
167 } |
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168 |
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|
169 if (line.startsWith("*!")) { |
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170 String spezial = line.substring(2).trim(); |
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171 |
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172 if (spezial.length() == 0) { |
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173 continue; |
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|
174 } |
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175 |
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|
176 if (spezial.startsWith(COLUMN_BEZ_TEXT)) { |
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177 spezial = spezial.substring(COLUMN_BEZ_TEXT.length()).trim(); |
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178 if (spezial.length() == 0) { |
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179 continue; |
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180 } |
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|
181 langBezeichner = StringUtil.splitQuoted(spezial, '"'); |
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182 } |
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|
183 else if (spezial.startsWith(COLUMN_BEZ_BREITE)) { |
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184 spezial = spezial.substring(COLUMN_BEZ_BREITE.length()).trim(); |
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185 |
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|
186 if (spezial.length() == 0) { |
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|
187 continue; |
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|
188 } |
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|
189 |
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|
190 String[] split = spezial.split("\\s+"); |
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191 |
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|
192 colNaWidths = new int[split.length]; |
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|
193 for (int i=0; i < split.length; i++) { |
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|
194 colNaWidths[i] = Integer.parseInt(split[i]); |
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|
195 } |
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|
196 } |
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|
197 else if (spezial.startsWith(COLUMN_QUELLE)) { |
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|
198 if (spezial.length() == 0) { |
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|
199 continue; |
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|
200 } |
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|
201 quellen = StringUtil.splitQuoted(spezial, '"'); |
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|
202 } |
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|
203 else if (spezial.startsWith(COLUMN_DATUM)) { |
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|
204 spezial = spezial.substring(COLUMN_DATUM.length()).trim(); |
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|
205 if (spezial.length() == 0) { |
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|
206 continue; |
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changeset
|
207 } |
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|
208 daten = StringUtil.splitQuoted(spezial, '"'); |
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changeset
|
209 } |
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|
210 continue; |
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|
211 } |
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|
212 |
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|
213 if (line.length() < 11) { |
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|
214 continue; |
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|
215 } |
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|
216 |
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changeset
|
217 if (line.startsWith("*")) { |
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|
218 Matcher m = UNIT_COMMENT.matcher(line); |
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|
219 if (m.matches()) { |
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|
220 log.debug("unit comment found"); |
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|
221 // XXX: This hack is needed because desktop |
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|
222 // FLYS is broken figuring out the unit |
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|
223 String [] units = m.group(1).split("\\s{2,}"); |
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|
224 m = UNIT.matcher(units[0]); |
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|
225 einheit = m.matches() ? m.group(1) : units[0]; |
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|
226 log.debug("unit: " + einheit); |
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|
227 } |
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|
228 continue; |
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|
229 } |
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|
230 |
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changeset
|
231 if (firstAbfluesse != null) { |
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changeset
|
232 if (!columnHeaderChecked) { |
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|
233 int unknownCount = 0; |
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234 HashSet<String> uniqueColumnNames = |
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235 new HashSet<String>(); |
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236 for (int i = 0; i < lsBezeichner.length; ++i) { |
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237 if (lsBezeichner[i] == null |
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238 || lsBezeichner[i].length() == 0) { |
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239 double q = firstAbfluesse[i].doubleValue(); |
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240 if (q < 0.001) { |
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241 lsBezeichner[i] = |
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242 "<unbekannt #" + unknownCount + ">"; |
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243 ++unknownCount; |
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244 } |
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245 else { |
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246 lsBezeichner[i] = "Q="+format(q); |
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247 } |
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248 } |
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249 String candidate = lsBezeichner[i]; |
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250 int collision = 1; |
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251 while (!uniqueColumnNames.add(candidate)) { |
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252 candidate = lsBezeichner[i] + |
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253 " (" + collision + ")"; |
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254 ++collision; |
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255 } |
2357
2e18e12fac11
Added date guesser for WST columns.
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|
256 ImportWstColumn iwc = wst.getColumn(i); |
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257 iwc.setName(candidate); |
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258 iwc.setTimeInterval(guessDate(candidate)); |
1211
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259 } |
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260 columnHeaderChecked = true; |
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261 } |
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262 |
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263 BigDecimal [] data = |
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264 parseLineAsDouble(line, columnCount, true, false); |
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265 |
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266 BigDecimal kaem = data[0]; |
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267 |
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|
268 if (!kms.add(kaem)) { |
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269 log.warn( |
3662
0d27d02b1208
backend: Completed the error messages of the importer.
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270 "WST: km " + kaem + |
1211
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271 " (line " + in.getLineNumber() + |
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272 ") found more than once. -> ignored"); |
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273 continue; |
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|
274 } |
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275 |
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|
276 if (kaem.compareTo(minKm) < 0) { |
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|
277 minKm = kaem; |
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278 } |
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|
279 if (kaem.compareTo(maxKm) > 0) { |
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|
280 maxKm = kaem; |
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|
281 } |
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282 |
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283 // extract values |
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284 for (int i = 0; i < columnCount; ++i) { |
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|
285 addValue(kaem, data[i+1], i); |
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|
286 } |
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|
287 |
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|
288 } |
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|
289 else { // firstAbfluesse == null |
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|
290 if (langBezeichner != null) { |
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|
291 lsBezeichner = StringUtil.fitArray( |
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292 langBezeichner, lsBezeichner); |
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|
293 } |
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|
294 else if (colNaWidths != null) { |
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|
295 for (int j = 0, i = 0, N = input.length(); |
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296 j < colNaWidths.length && i < N; |
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297 i += colNaWidths[j++] |
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|
298 ) { |
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|
299 lsBezeichner[j] = input.substring( |
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|
300 i, i+colNaWidths[j]).trim(); |
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|
301 } |
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|
302 } |
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|
303 else { |
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|
304 // first column begins at position 8 in line |
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305 for (int i = 8, col = 0; i < input.length(); i += 9) { |
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|
306 if ((i + 9) > input.length()) { |
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|
307 i = input.length() - 10; |
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|
308 } |
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|
309 // one column header is 9 chars wide |
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|
310 lsBezeichner[col++] = |
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|
311 input.substring(i, i + 9).trim(); |
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|
312 |
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|
313 if (col == lsBezeichner.length) { |
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|
314 break; |
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|
315 } |
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changeset
|
316 } |
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changeset
|
317 } |
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parents:
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changeset
|
318 } |
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|
319 |
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|
320 } |
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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|
321 |
f834b411ca57
Added db table, model class and importer stuff for units.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1211
diff
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|
322 wst.setUnit(new ImportUnit(einheit)); |
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Added db table, model class and importer stuff for units.
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|
323 |
1211
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|
324 addInterval(minKm, maxKm, aktAbfluesse); |
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|
325 } |
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changeset
|
326 finally { |
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|
327 if (in != null) { |
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|
328 in.close(); |
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|
329 } |
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changeset
|
330 } |
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parents:
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changeset
|
331 } |
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changeset
|
332 |
f08fe480092c
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parents:
diff
changeset
|
333 protected void addValue(BigDecimal km, BigDecimal w, int index) { |
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changeset
|
334 if (w != null) { |
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parents:
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changeset
|
335 ImportWstColumn column = wst.getColumn(index); |
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changeset
|
336 column.addColumnValue(km, w); |
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changeset
|
337 } |
f08fe480092c
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changeset
|
338 } |
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|
339 |
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parents:
diff
changeset
|
340 private static final NumberFormat NF = getNumberFormat(); |
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|
341 |
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parents:
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changeset
|
342 private static final NumberFormat getNumberFormat() { |
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changeset
|
343 NumberFormat nf = NumberFormat.getInstance(); |
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|
344 nf.setMinimumFractionDigits(2); |
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changeset
|
345 nf.setMaximumFractionDigits(2); |
f08fe480092c
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changeset
|
346 return nf; |
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parents:
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changeset
|
347 } |
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parents:
diff
changeset
|
348 |
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changeset
|
349 protected static String format(double value) { |
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|
350 return NF.format(value); |
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351 } |
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352 |
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353 protected void addInterval( |
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354 BigDecimal from, |
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355 BigDecimal to, |
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356 BigDecimal [] values |
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357 ) { |
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358 log.debug("addInterval: " + from + " " + to); |
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359 |
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360 if (values == null || from == MAX_RANGE) { |
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361 return; |
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362 } |
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363 |
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364 if (to.compareTo(from) < 0) { |
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365 BigDecimal t = from; from = to; to = t; |
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366 } |
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367 |
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368 ImportRange range = new ImportRange(from, to); |
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369 |
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370 // little workaround to make the q ranges tightly fit. |
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371 // Leave a very small gap to ensure that the range queries |
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372 // still work. |
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373 |
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374 if (lastRange != null) { |
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375 double d1 = Math.abs( |
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376 lastRange.getB().doubleValue() - range.getA().doubleValue()); |
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377 double d2 = Math.abs( |
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378 range.getB().doubleValue() - lastRange.getA().doubleValue()); |
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379 |
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380 if (d1 < d2) { |
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381 lastRange.setB(range.getA().subtract(INTERVAL_GAP)); |
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382 } |
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383 else { |
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384 range.setA(lastRange.getB().subtract(INTERVAL_GAP)); |
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385 } |
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386 } |
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387 |
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388 for (int i = 0; i < values.length; ++i) { |
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389 ImportWstColumn column = wst.getColumn(i); |
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390 ImportWstQRange wstQRange = new ImportWstQRange(range, values[i]); |
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391 column.addColumnQRange(wstQRange); |
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392 } |
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393 |
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394 lastRange = range; |
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395 } |
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396 |
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397 private static final BigDecimal [] parseLineAsDouble( |
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398 String line, |
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399 int count, |
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400 boolean bStation, |
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401 boolean bParseEmptyAsZero |
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402 ) { |
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403 String [] tokens = parseLine(line, count, bStation); |
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404 |
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405 BigDecimal [] doubles = new BigDecimal[tokens.length]; |
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406 |
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407 for (int i = 0; i < doubles.length; ++i) { |
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408 String token = tokens[i].trim(); |
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409 if (token.length() != 0) { |
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410 doubles[i] = new BigDecimal(token); |
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411 } |
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412 else if (bParseEmptyAsZero) { |
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413 doubles[i] = UNDEFINED_ZERO; |
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414 } |
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415 } |
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416 |
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417 return doubles; |
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418 } |
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419 |
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420 private static String [] parseLine( |
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421 String line, |
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422 int tokenCount, |
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423 boolean bParseStation |
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424 ) { |
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425 ArrayList<String> strings = new ArrayList<String>(); |
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426 |
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|
427 if (bParseStation) { |
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428 if (line.length() < 8) { |
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429 throw new IllegalArgumentException("station too short"); |
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430 } |
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|
431 strings.add(line.substring(0, 8)); |
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432 } |
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|
433 |
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434 int pos = 9; |
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|
435 for (int i = 0; i < tokenCount; ++i) { |
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|
436 if (line.length() >= pos + 8) { |
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|
437 strings.add(line.substring(pos, pos + 8)); |
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|
438 } |
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|
439 else { |
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|
440 strings.add(""); |
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|
441 } |
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|
442 pos += 9; |
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|
443 } |
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|
444 |
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|
445 return strings.toArray(new String[strings.size()]); |
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|
446 } |
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|
447 } |
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|
448 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |