Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/StaFileParser.java @ 2371:fe89d6cf55fb

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Added support for official gauge numbers. flys-backend/trunk@3464 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 19 Dec 2011 11:21:25 +0000
parents f08fe480092c
children d183ae164cfc
rev   line source
1211
f08fe480092c Moved file parsers to separate package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.importer.parsers;
f08fe480092c Moved file parsers to separate package.
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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.io.LineNumberReader;
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6 import java.io.FileInputStream;
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7 import java.io.InputStreamReader;
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8
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9 import java.math.BigDecimal;
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10
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11 import java.util.regex.Pattern;
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12 import java.util.regex.Matcher;
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13
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14 import java.util.HashMap;
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15 import java.util.ArrayList;
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16
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17 import org.apache.log4j.Logger;
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18
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19 import de.intevation.flys.importer.ImportMainValueType;
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20 import de.intevation.flys.importer.ImportMainValue;
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21 import de.intevation.flys.importer.ImportNamedMainValue;
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22 import de.intevation.flys.importer.ImportGauge;
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23
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24 public class StaFileParser
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25 {
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26 private static Logger log = Logger.getLogger(StaFileParser.class);
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27
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28 public static final String ENCODING = "ISO-8859-1";
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29
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30 public static final String TYPES =
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31 System.getProperty("flys.backend.main.value.types", "QWTD");
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32
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33 public static final Pattern QWTD_ =
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34 Pattern.compile("\\s*([^\\s]+)\\s+([^\\s]+)\\s+([" +
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35 Pattern.quote(TYPES) + "]).*");
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36
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37 public StaFileParser() {
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38 }
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39
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40 public boolean parse(ImportGauge gauge) throws IOException {
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41
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42 File file = gauge.getStaFile();
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43
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44 log.info("parsing STA file: " + file);
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45 LineNumberReader in = null;
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46 try {
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47 in =
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48 new LineNumberReader(
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49 new InputStreamReader(
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50 new FileInputStream(file), ENCODING));
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51
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52 String line = in.readLine();
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53
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54 if (line == null) {
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55 log.warn("STA file is empty.");
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56 return false;
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57 }
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58
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59 if (line.length() < 37) {
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60 log.warn("first line in STA file is too short.");
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61 return false;
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62 }
2371
fe89d6cf55fb Added support for official gauge numbers.
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63 String gaugeNumberString = line.substring( 0, 16).trim();
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64 String gaugeName = line.substring(16, 37).trim();
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65
2371
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66 Long gaugeNumber = null;
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67 try {
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68 gaugeNumber = Long.parseLong(gaugeNumberString);
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69 }
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70 catch (NumberFormatException nfe) {
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71 log.warn("'" + gaugeNumberString +
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72 "' is not a valid long number.");
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73 }
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74
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75 gauge.setName(gaugeName);
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76 gauge.setOfficialNumber(gaugeNumber);
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77
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78 if (log.isDebugEnabled()) {
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79 log.debug(
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80 "name/number: '" + gaugeName + "' '" + gaugeNumber + "'");
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81 }
1211
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82
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83 String [] values = line.substring(38).trim().split("\\s+", 2);
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84
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85 if (values.length < 2) {
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86 log.warn("Not enough columns for aeo and datum");
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87 }
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88 try {
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89 gauge.setAeo(new BigDecimal(values[0].replace(",", ".")));
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90 gauge.setDatum(new BigDecimal(values[1].replace(",", ".")));
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91 }
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92 catch (NumberFormatException nfe) {
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93 log.warn("cannot parse aeo or datum");
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94 return false;
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95 }
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96
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97 line = in.readLine();
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98
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99 if (line == null) {
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100 log.warn("STA file has not enough lines");
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101 return false;
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102 }
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103
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104 if (line.length() < 36) {
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105 log.warn("second line is too short");
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106 return false;
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107 }
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108
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109 try {
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110 gauge.setStation(
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111 new BigDecimal(line.substring(29, 36).trim()));
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112 }
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113 catch (NumberFormatException nfe) {
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114 log.warn("parsing of the datum of the gauge failed");
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115 return false;
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116 }
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117
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118 // overread the next six lines
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119 for (int i = 0; i < 6; ++i) {
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120 if ((line = in.readLine()) == null) {
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121 log.warn("STA file is too short");
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122 return false;
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123 }
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124 }
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125
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126 HashMap<String, ImportMainValueType> types =
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127 new HashMap<String, ImportMainValueType>();
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128
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129 ArrayList<ImportNamedMainValue> namedMainValues =
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130 new ArrayList<ImportNamedMainValue>();
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131
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132 ArrayList<ImportMainValue> mainValues =
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133 new ArrayList<ImportMainValue>();
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134
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135 while ((line = in.readLine()) != null) {
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136 Matcher m = QWTD_.matcher(line);
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137 if (m.matches()) {
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138 BigDecimal value;
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139 try {
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140 value = new BigDecimal(m.group(2).replace(",", "."));
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141 }
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142 catch (NumberFormatException nfe) {
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143 log.warn("value not parseable in line "
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144 + in.getLineNumber());
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145 continue;
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146 }
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147 String typeString = m.group(3);
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148 log.debug("\t type: " + typeString);
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149 ImportMainValueType type = types.get(typeString);
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150 if (type == null) {
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151 type = new ImportMainValueType(typeString);
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152 types.put(typeString, type);
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153 }
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154 String name = m.group(1);
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155 ImportNamedMainValue namedMainValue =
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156 new ImportNamedMainValue(type, name);
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157 namedMainValues.add(namedMainValue);
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158
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159 ImportMainValue mainValue =
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160 new ImportMainValue(gauge, namedMainValue, value);
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161
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162 mainValues.add(mainValue);
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163 }
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164 else {
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165 // TODO: treat as a comment
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166 }
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167 }
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168 gauge.setMainValueTypes(
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169 new ArrayList<ImportMainValueType>(types.values()));
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170 gauge.setNamedMainValues(namedMainValues);
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171 gauge.setMainValues(mainValues);
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172 }
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173 finally {
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174 if (in != null) {
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175 in.close();
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176 }
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177 }
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178 log.info("finished parsing STA file: " + file);
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179 return true;
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180 }
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181 }
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182 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org