Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/AtFileParser.java @ 1211:f08fe480092c

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Moved file parsers to separate package. flys-backend/trunk@2337 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 15 Jul 2011 13:07:45 +0000
parents
children 976ead36192d
rev   line source
1211
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 package de.intevation.flys.importer.parsers;
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2
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3 import java.io.BufferedReader;
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4 import java.io.File;
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5 import java.io.FileInputStream;
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6 import java.io.InputStreamReader;
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7 import java.io.IOException;
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8 import java.math.BigDecimal;
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9
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10 import org.apache.log4j.Logger;
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11
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12 import de.intevation.flys.importer.ImportDischargeTable;
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13 import de.intevation.flys.importer.ImportDischargeTableValue;
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14
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15 import java.util.regex.Pattern;
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16 import java.util.regex.Matcher;
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17
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18 import java.util.Date;
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19 import java.util.Calendar;
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20
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21 import de.intevation.flys.importer.ImportTimeInterval;
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22
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23 public class AtFileParser {
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24
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25 public static final String ENCODING = "ISO-8859-1";
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26
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27 private static Logger logger = Logger.getLogger(AtFileParser.class);
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28
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29
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30 // regular expression from hell to find out time range
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31 public static final Pattern DATE_LINE = Pattern.compile(
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32 "^\\*\\s*Abflu[^t]+tafel?\\s*([^\\d]+)" +
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33 "(\\d{1,2})?\\.?(\\d{1,2})?\\.?(\\d{2,4})\\s*(?:(?:bis)|-)?\\s*" +
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34 "(?:(\\d{1,2})?\\.?(\\d{1,2})?\\.?(\\d{2,4}))?\\s*.*$");
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35
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36 public AtFileParser() {
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37 }
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38
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39
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40 public ImportDischargeTable parse(File file) throws IOException {
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41 return parse(file, "", 0);
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42 }
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43
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44 public ImportDischargeTable parse(
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45 File file,
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46 String prefix,
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47 int kind
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48 )
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49 throws IOException {
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50
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51 logger.info("parsing AT file: " + file);
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52
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53 BufferedReader br = null;
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54
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55 String line = null;
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56
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57 boolean beginning = true;
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58
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59 ImportDischargeTable dischargeTable =
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60 new ImportDischargeTable(kind, prefix + file.getName());
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61
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62 Date from = null;
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63 Date to = null;
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64
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65 try {
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66 br = new BufferedReader(
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67 new InputStreamReader(
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68 new FileInputStream(file), ENCODING));
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69
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70 while ((line = br.readLine()) != null) {
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71
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72 String tmp = line.trim();
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73
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74 if (tmp.length() == 0) {
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75 continue;
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76 }
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77
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78 Matcher m = DATE_LINE.matcher(tmp);
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79 if (m.matches()) {
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80 from = guessDate(m.group(2), m.group(3), m.group(4));
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81 to = guessDate(m.group(5), m.group(6), m.group(7));
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82 if (from == null) {
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83 Date t = from; from = to; to = t;
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84 }
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85 continue;
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86 }
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87
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88 if (tmp.startsWith("#! name=")) {
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89 // XXX Skip the name, because we don't know where to save
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90 // it at the moment
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91
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92 //String name = tmp.substring(8);
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93 continue;
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94 }
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95
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96 if (tmp.startsWith("#") || tmp.startsWith("*")) {
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97 continue;
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98 }
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99
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100 String[] splits = tmp.replace(',', '.').split("\\s+");
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101
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102 if ((splits.length < 2) || (splits.length > 11)) {
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103 logger.warn("Found an invalid row in the AT file.");
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104 continue;
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105 }
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106
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107 String strW = splits[0].trim();
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108 double W = Double.parseDouble(strW);
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109
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110 /* shift is used to differenciate between lines with
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111 * exactly 10 Qs and lines with less than 10 Qs. The shift
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112 * is only modified when it is the first line.
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113 */
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114 int shift = -1;
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115
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116 if (splits.length != 11 && beginning) {
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117 shift = 10 - splits.length;
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118 }
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119
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120
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121 for (int i = 1; i < splits.length; i++) {
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122 double iW = W + shift + i;
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123 double iQ = Double.parseDouble(splits[i].trim());
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124
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125 dischargeTable.addDischargeTableValue(
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126 new ImportDischargeTableValue(
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127 new BigDecimal(iQ/100.0),
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128 new BigDecimal(iW/100.0)));
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129 }
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130
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131 beginning = false;
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132 }
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133 }
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134 catch (NumberFormatException pe) {
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135 logger.warn(pe.getMessage());
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136 }
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137 finally {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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138 if (br != null) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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139 br.close();
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140 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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141 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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142
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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143 if (from != null) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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144 if (to != null && from.compareTo(to) > 0) {
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145 Date t = from; from = to; to = t;
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146 }
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147 logger.info("from: " + from + " to: " + to);
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148 ImportTimeInterval interval = new ImportTimeInterval(from, to);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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149 dischargeTable.setTimeInterval(interval);
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150 }
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151
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152 logger.info("Finished parsing AT file: " + file);
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153
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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154 return dischargeTable;
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155 }
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156
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157 public static Date guessDate(String day, String month, String year) {
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158 if (day == null && month == null && year == null) {
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159 return null;
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160 }
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161
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162 logger.debug("day: " + day + " month: " + month + " year: " + year);
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163
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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164 int dayI = 15;
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165 if (day != null) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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166 try {
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167 dayI = Integer.parseInt(day.trim());
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168 }
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169 catch (NumberFormatException nfe) {
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170 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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171 }
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172
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173 int monthI = 6;
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174 if (month != null) {
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diff changeset
175 try {
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diff changeset
176 monthI = Integer.parseInt(month.trim());
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177 }
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diff changeset
178 catch (NumberFormatException nfe) {
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179 }
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180 }
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181
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
182 int yearI = 1900;
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diff changeset
183 if (year != null) {
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diff changeset
184 try {
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diff changeset
185 yearI = Integer.parseInt(year.trim());
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 if (yearI < 100) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187 if (yearI < 20) {
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 yearI += 2000;
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
189 }
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
190 else {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 yearI += 1900;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
192 }
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 }
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
194 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
195 catch (NumberFormatException nfe) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
197 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
198
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
199 Calendar cal = Calendar.getInstance();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200 cal.set(yearI, monthI-1, dayI, 12, 0, 0);
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 long ms = cal.getTimeInMillis();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 cal.setTimeInMillis(ms - ms%1000);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 return cal.getTime();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 }
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org