Mercurial > dive4elements > river

annotate flys-backend/src/main/java/org/dive4elements/river/importer/parsers/MeasurementStationsParser.java @ 5828:dfb26b03b179

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Moved directories to org.dive4elements.river
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 11:53:11 +0200
parents flys-backend/src/main/java/de/intevation/flys/importer/parsers/MeasurementStationsParser.java@de3c77d35fef
children 18619c1e7c2a
rev   line source
4193
f63b39799d2d Adapted DB schema (added relation measurement_station); improved importer to read files from filesystem with measurement stations.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.importer.parsers;
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2
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3 import java.math.BigDecimal;
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4 import java.text.ParseException;
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5 import java.util.ArrayList;
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6 import java.util.Date;
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7 import java.util.List;
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8
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9 import org.apache.log4j.Logger;
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10
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11 import de.intevation.flys.importer.ImportMeasurementStation;
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12 import de.intevation.flys.importer.ImportRange;
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13 import de.intevation.flys.importer.ImportTimeInterval;
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14
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15
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16 public class MeasurementStationsParser extends LineParser {
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17
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18 public static class MeasurementStationParserException extends Exception {
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19
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20 private static final long serialVersionUID = 1L;
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21
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22 public MeasurementStationParserException(String msg) {
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23 super(msg);
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24 }
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25 }
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26
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27 public static final int MIN_COLUMNS = 10;
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28
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29 private static final Logger log = Logger
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30 .getLogger(MeasurementStationsParser.class);
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31
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32 private List<ImportMeasurementStation> measurementStations;
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33 private ImportMeasurementStation current;
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34
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35 @Override
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36 protected void reset() {
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37 this.measurementStations = new ArrayList<ImportMeasurementStation>();
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38 }
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39
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40 @Override
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41 protected void finish() {
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42 }
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43
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44 @Override
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45 protected void handleLine(int lineNum, String line) {
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46 if (line == null || line.startsWith(START_META_CHAR)) {
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47 log.info("skip meta information at line " + lineNum);
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48 return;
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49 }
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50
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51 try {
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52 current = new ImportMeasurementStation();
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53 handleDataLine(line);
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54 measurementStations.add(current);
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55 }
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56 catch (MeasurementStationParserException e) {
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57 log.warn("Problem in line " + lineNum + ": " + e.getMessage());
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58 }
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59 }
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60
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61 public List<ImportMeasurementStation> getMeasurementStations() {
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62 return measurementStations;
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63 }
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64
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65 protected void handleDataLine(String line)
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66 throws MeasurementStationParserException {
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67 String[] cols = line.split(SEPERATOR_CHAR);
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68
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69 if (cols == null || cols.length < MIN_COLUMNS) {
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70 int num = cols != null ? cols.length : 0;
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71 throw new MeasurementStationParserException("Not enough columns: "
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72 + num);
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73 }
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74
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75 current.name = getName(cols);
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76 current.station = getStation(cols);
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77 current.range = getRange(cols);
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78 current.measurementType = getMeasurementType(cols);
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79 current.riverside = getRiverside(cols);
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80 current.gauge = getGauge(cols);
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81 current.observationTimerange = getObservationTimerange(cols);
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82 current.operator = getOperator(cols);
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83 current.description = getDescription(cols);
4193
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84
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85 log.debug("Found new measurement station '" + current.name + "' at km "
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86 + current.station);
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87 }
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88
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89 protected String getName(String[] cols)
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90 throws MeasurementStationParserException {
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91 if (cols[0] == null || cols[0].length() == 0) {
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92 throw new MeasurementStationParserException("invalid name '"
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93 + cols[0] + "'");
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94 }
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95
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96 return cols[0];
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97 }
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98
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99 protected double getStation(String[] cols)
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100 throws MeasurementStationParserException {
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101 if (cols[1] == null || cols[1].length() == 0) {
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102 throw new MeasurementStationParserException("invalid station '"
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103 + cols[1] + "'");
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104 }
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105
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106 try {
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107 return getDouble(cols[1]);
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108 }
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109 catch (ParseException e) {
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110 throw new MeasurementStationParserException(
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111 "unable to parse station: " + e.getMessage());
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112 }
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113 }
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114
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115 protected ImportRange getRange(String[] cols) {
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116 if (cols[4] == null || cols[4].length() == 0) {
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117 log.warn("No upper value for range found in '" + cols[4] + "'");
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118 return null;
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119 }
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120
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121 if (cols[5] == null || cols[5].length() == 0) {
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122 log.warn("No upper value for range found in '" + cols[5] + "'");
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123 return null;
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124 }
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125
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126 try {
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127 double lower = getDouble(cols[4]);
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128 double upper = getDouble(cols[5]);
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129
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130 return new ImportRange(new BigDecimal(lower), new BigDecimal(upper));
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131 }
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132 catch (ParseException e) {
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133 log.warn("unable to parse range: " + e.getMessage());
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134 return null;
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135 }
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136 }
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137
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138 protected String getMeasurementType(String[] cols)
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139 throws MeasurementStationParserException {
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140 if (cols[2] == null || cols[2].length() == 0) {
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141 throw new MeasurementStationParserException(
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142 "invalid measurement type '" + cols[2] + "'");
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143 }
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144
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145 return cols[2];
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146 }
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147
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148 protected String getRiverside(String[] cols) {
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149 return cols[3];
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150 }
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151
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152 protected String getGauge(String[] cols) {
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153 if (cols[6] == null || cols[6].length() == 0) {
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154 log.warn("invalid gauge found: '" + cols[6] + "'");
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155 }
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156
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157 return cols[6];
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158 }
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159
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160 protected ImportTimeInterval getObservationTimerange(String[] cols) {
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161 if (cols[8] == null || cols[8].length() == 0) {
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162 log.warn("Found invalid observation time '" + cols[8] + "'");
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163 }
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164
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165 try {
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166 Date date = getDate(cols[8]);
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167
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168 if (date != null) {
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169 return new ImportTimeInterval(date);
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170 }
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171 log.warn("Observation time date invalid: '" + cols[8] + "'");
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172 }
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173 catch (ParseException pe) {
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174 log.warn("Observation time date not parseable: '" + cols[8] + "'");
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175 return null;
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176 }
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177 return null;
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178 }
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179
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180 protected String getOperator(String[] cols) {
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181 return cols[9];
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182 }
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183
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184 protected String getDescription(String[] cols) {
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185 return cols.length > 10 ? cols[10] : null;
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186 }
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187 }
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