Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/WaterlevelParser.java @ 5016:255898799ed9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Minimal whitespace and doc cosmetics.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Mon, 18 Feb 2013 11:49:27 +0100
parents f63b39799d2d
children b5e3df1feeb4
rev   line source
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c4db0f75a94a Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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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.File;
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4 import java.io.IOException;
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5 import java.text.NumberFormat;
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6 import java.text.ParseException;
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7 import java.util.ArrayList;
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8 import java.util.List;
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9 import java.util.regex.Matcher;
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10 import java.util.regex.Pattern;
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11
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12 import org.apache.log4j.Logger;
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13
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14 import de.intevation.flys.importer.ImportUnit;
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15 import de.intevation.flys.importer.ImportWaterlevel;
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16 import de.intevation.flys.importer.ImportWaterlevelQRange;
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17 import de.intevation.flys.importer.ImportWaterlevelValue;
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18
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19
c4db0f75a94a Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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20 public class WaterlevelParser extends LineParser {
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21
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22 private static final Logger log = Logger.getLogger(WaterlevelParser.class);
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23
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24 private static final NumberFormat nf =
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25 NumberFormat.getInstance(DEFAULT_LOCALE);
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26
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27 private static final Pattern META_Q_RANGE =
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28 Pattern.compile("Abfluss\\s\\[(.*)\\];(.*)");
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29
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30 public static final Pattern META_UNIT =
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31 Pattern.compile("^Einheit: \\[(.*)\\].*");
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32
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33 private List<ImportWaterlevel> waterlevels;
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34
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35 private ImportWaterlevel current;
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36
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37 private ImportWaterlevelQRange currentQ;
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38
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39 private String currentDescription;
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40
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41
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42 public WaterlevelParser() {
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43 waterlevels = new ArrayList<ImportWaterlevel>();
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44 }
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c4db0f75a94a Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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46
c4db0f75a94a Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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47 public List<ImportWaterlevel> getWaterlevels() {
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48 return waterlevels;
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49 }
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50
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51
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52 @Override
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53 public void parse(File file) throws IOException {
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54 currentDescription = file.getName();
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55
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56 super.parse(file);
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57 }
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58
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59
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60 @Override
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61 protected void reset() {
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62 currentQ = null;
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63 current = new ImportWaterlevel(currentDescription);
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64 }
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65
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66
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67 @Override
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68 protected void finish() {
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69 if (current != null) {
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70 if (currentQ != null) {
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71 current.addValue(currentQ);
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72 }
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73
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74 waterlevels.add(current);
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75 }
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76 }
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77
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78 @Override
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79 protected void handleLine(int lineNum, String line) {
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80 if (line.startsWith(START_META_CHAR)) {
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81 handleMetaLine(stripMetaLine(line));
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82 return;
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83 }
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84 else if (handleQRange(line)) {
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85 return;
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86 }
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87 else {
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88 handleDataLine(line);
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89 return;
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90 }
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91 }
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92
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93
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94 private void handleMetaLine(String meta) {
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95 Matcher m = META_UNIT.matcher(meta);
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96
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97 if (m.matches()) {
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98 String unit = m.group(1);
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99 log.debug("Found unit: '" + unit + "'");
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100
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101 current.setUnit(new ImportUnit(unit));
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102 }
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103 }
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104
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105
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106 private boolean handleQRange(String line) {
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107 Matcher m = META_Q_RANGE.matcher(line);
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108
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109 if (m.matches()) {
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110 String unitStr = m.group(1);
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111 String valueStr = m.group(2);
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112
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113 if (currentQ != null) {
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114 if (current != null) {
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115 current.addValue(currentQ);
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116 }
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117 else {
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118 // this should never happen
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119 log.warn("Try to add Q range without waterlevel!");
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120 }
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121 }
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122
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123 try {
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124 log.debug("Found new Q range: Q=" + valueStr);
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125
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126 currentQ = new ImportWaterlevelQRange(
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127 nf.parse(valueStr).doubleValue());
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128
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129 return true;
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130 }
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131 catch (ParseException pe) {
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132 log.warn("Error while parsing Q range: '" + line + "'");
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133 }
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134 }
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135
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136 return false;
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137 }
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138
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139
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140 private void handleDataLine(String line) {
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141 String[] cols = line.split(SEPERATOR_CHAR);
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142
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143 if (cols == null || cols.length < 2) {
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144 log.warn("skip invalid waterlevel line: '" + line + "'");
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145 return;
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146 }
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147
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148 try {
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149 Double station = nf.parse(cols[0]).doubleValue();
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150 Double value = nf.parse(cols[1]).doubleValue();
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151
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152 currentQ.addValue(new ImportWaterlevelValue(station, value));
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153 }
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154 catch (ParseException pe) {
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155 log.warn("Error while parsing number values: '" + line + "'");
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156 }
2844
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157 }
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158 }
c4db0f75a94a Prepared the importer to import MINFO specific waterlevel values and added a stub for a parser.
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159 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org