Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/SedimentDensityParser.java @ 5505:1b036a409575

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SedimentDensityParser: allow year to be null (in line with schema)
author Tom Gottfried <tom.gottfried@intevation.de>
date Thu, 28 Mar 2013 15:35:42 +0100
parents b3dd14fc13a6
children db6c7268b08e
rev   line source
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3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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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
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6 import java.math.BigDecimal;
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7
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8 import java.text.NumberFormat;
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9 import java.text.ParseException;
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10
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11 import java.util.ArrayList;
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12 import java.util.Calendar;
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13 import java.util.Date;
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14 import java.util.List;
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15 import java.util.regex.Matcher;
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16 import java.util.regex.Pattern;
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18 import org.apache.log4j.Logger;
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20 import de.intevation.flys.importer.ImportDepth;
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21 import de.intevation.flys.importer.ImportSedimentDensity;
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22 import de.intevation.flys.importer.ImportSedimentDensityValue;
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23 import de.intevation.flys.utils.DateGuesser;
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26 public class SedimentDensityParser extends LineParser {
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28 private static final Logger log =
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29 Logger.getLogger(SedimentDensityParser.class);
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31 private int densitsyColumn = 1;
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32
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33 public static final NumberFormat nf = NumberFormat.getInstance(DEFAULT_LOCALE);
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34
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35
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36 public static final Pattern META_DEPTH =
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37 Pattern.compile("^Tiefe: (\\w++)-(\\w++)( (\\w++))?.*");
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38
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39 protected List<ImportSedimentDensity> sedimentDensities;
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41 protected ImportSedimentDensity current;
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43 protected String currentDescription;
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44
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46 public SedimentDensityParser() {
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47 sedimentDensities = new ArrayList<ImportSedimentDensity>();
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48 }
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49
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51 @Override
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52 public void parse(File file) throws IOException {
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53 currentDescription = file.getName();
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54
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55 super.parse(file);
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56 }
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58
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59 @Override
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60 protected void reset() {
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61 current = new ImportSedimentDensity(currentDescription);
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62 }
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63
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64
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65 @Override
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66 protected void finish() {
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67 if (current != null) {
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68 sedimentDensities.add(current);
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69 }
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70 }
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73 @Override
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74 protected void handleLine(int lineNum, String line) {
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75 if (line.startsWith(START_META_CHAR)) {
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76 handleMetaLine(stripMetaLine(line));
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77 }
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78 else {
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79 handleDataLine(line);
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80 }
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81 }
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82
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83
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84 protected void handleMetaLine(String line) {
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85 if (handleMetaDepth(line)) {
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86 return;
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87 }
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88 else if (handleMetaColumns(line)) {
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89 return;
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90 }
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91 else {
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92 log.warn("Unknown meta line: '" + line + "'");
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93 }
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94 }
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96
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97 private boolean handleMetaColumns(String line) {
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98 String[] columns = line.split(";");
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99 for (int i = 0; i < columns.length; i++) {
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100 if (columns[i].contains("Sedimentdichte")) {
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101 this.densitsyColumn = i;
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102 return true;
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103 }
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104 }
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105 return false;
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106 }
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107
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108
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109 protected boolean handleMetaDepth(String line) {
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110 Matcher m = META_DEPTH.matcher(line);
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111
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112 if (m.matches()) {
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113 String lo = m.group(1);
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114 String up = m.group(2);
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115
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116 log.info("Found sediment density depth: " + lo + " - " + up + " cm");
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118 try {
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119 ImportDepth depth = new ImportDepth(
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120 new BigDecimal(nf.parse(lo).doubleValue()),
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121 new BigDecimal(nf.parse(up).doubleValue())
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122 );
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123
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124 current.setDepth(depth);
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125
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126 return true;
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127 }
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128 catch (ParseException pe) {
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129 log.warn("Unparseable numbers in: '" + line + "'");
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130 }
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131 }
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132 else {
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133 log.debug("Meta line doesn't contain depth information: " + line);
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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 protected void handleDataLine(String line) {
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141 String[] vals = line.split(SEPERATOR_CHAR);
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142
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143 if (vals == null || vals.length < 3) {
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144 log.warn("skip invalid data line: '" + line + "'");
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145 return;
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146 }
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147
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148 BigDecimal km;
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149 BigDecimal density;
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150 try {
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151 km = new BigDecimal(nf.parse(vals[0]).doubleValue());
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152 density = new BigDecimal(nf.parse(vals[this.densitsyColumn]).doubleValue());
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153
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154 }
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155 catch (ParseException pe) {
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156 log.warn("Unparseable numbers in '" + line + "'");
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157 return;
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158 }
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159
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160 BigDecimal year = null;
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161 try {
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162 year =
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163 new BigDecimal(nf.parse(vals[vals.length - 1]).doubleValue());
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164 }
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165 catch(ParseException pe) {
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166 try {
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167 Date d = DateGuesser.guessDate(vals[vals.length - 1]);
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168 Calendar c = Calendar.getInstance();
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169 c.setTime(d);
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170 year = new BigDecimal(c.get(Calendar.YEAR));
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171 }
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172 catch (IllegalArgumentException iae) {
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173 log.warn("Could not parse date in '" + line + "'");
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174 }
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175 }
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176
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177 current.addValue(new ImportSedimentDensityValue(
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178 km,
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179 density,
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180 year,
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181 vals[vals.length - 1])
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182 );
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parents:
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183 }
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184
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185
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186 public List<ImportSedimentDensity> getSedimentDensities() {
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187 return sedimentDensities;
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188 }
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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189 }
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190 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org