Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/StaFileParser.java @ 3660:976ead36192d

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backend: Mention backend warnings in importer. flys-backend/trunk@5254 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 23 Aug 2012 17:13:47 +0000
parents d183ae164cfc
children 6553c8e364db
rev   line source
1211
f08fe480092c Moved file parsers to separate package.
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parents:
diff changeset
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.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 boolean PARSE_GAUGE_NUMBERS =
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34 Boolean.getBoolean("flys.backend.sta.parse.gauge.numbers");
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35
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36 public static final Pattern QWTD_ =
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37 Pattern.compile("\\s*([^\\s]+)\\s+([^\\s]+)\\s+([" +
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38 Pattern.quote(TYPES) + "]).*");
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39
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40 public StaFileParser() {
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41 }
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42
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43 public boolean parse(ImportGauge gauge) throws IOException {
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44
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45 File file = gauge.getStaFile();
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46
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47 log.info("parsing STA file: " + file);
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48 LineNumberReader in = null;
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49 try {
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50 in =
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51 new LineNumberReader(
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52 new InputStreamReader(
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53 new FileInputStream(file), ENCODING));
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54
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55 String line = in.readLine();
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56
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57 if (line == null) {
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58 log.warn("STA file is empty.");
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59 return false;
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60 }
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61
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62 if (line.length() < 37) {
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63 log.warn("First line in STA file is too short.");
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64 return false;
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65 }
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66
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67 String gaugeName = line.substring(16, 37).trim();
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68
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69 Long gaugeNumber = null;
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70
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71 if (PARSE_GAUGE_NUMBERS) {
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72 String gaugeNumberString = line.substring(0, 16).trim();
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73
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74 try {
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75 gaugeNumber = Long.parseLong(gaugeNumberString);
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76 }
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77 catch (NumberFormatException nfe) {
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78 log.warn("STA: '" + gaugeNumberString +
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79 "' is not a valid long number.");
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80 }
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81 }
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82
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83 gauge.setName(gaugeName);
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84 gauge.setOfficialNumber(gaugeNumber);
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85
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86 if (log.isDebugEnabled()) {
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87 log.debug(
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88 "name/number: '" + gaugeName + "' '" + gaugeNumber + "'");
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89 }
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90
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91 String [] values = line.substring(38).trim().split("\\s+", 2);
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92
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93 if (values.length < 2) {
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94 log.warn("STA: Not enough columns for aeo and datum.");
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95 }
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96 try {
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97 gauge.setAeo(new BigDecimal(values[0].replace(",", ".")));
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98 gauge.setDatum(new BigDecimal(values[1].replace(",", ".")));
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99 }
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100 catch (NumberFormatException nfe) {
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101 log.warn("STA: cannot parse aeo or datum.");
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102 return false;
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103 }
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104
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105 line = in.readLine();
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106
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107 if (line == null) {
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108 log.warn("STA file has not enough lines");
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109 return false;
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110 }
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111
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112 if (line.length() < 36) {
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113 log.warn("STA: second line is too short");
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114 return false;
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115 }
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116
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117 try {
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118 gauge.setStation(
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119 new BigDecimal(line.substring(29, 36).trim()));
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120 }
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121 catch (NumberFormatException nfe) {
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122 log.warn("STA: parsing of the datum of the gauge failed");
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123 return false;
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124 }
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125
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126 // overread the next six lines
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127 for (int i = 0; i < 6; ++i) {
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128 if ((line = in.readLine()) == null) {
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129 log.warn("STA file is too short");
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130 return false;
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131 }
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132 }
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133
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134 HashMap<String, ImportMainValueType> types =
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135 new HashMap<String, ImportMainValueType>();
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136
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137 ArrayList<ImportNamedMainValue> namedMainValues =
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138 new ArrayList<ImportNamedMainValue>();
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139
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140 ArrayList<ImportMainValue> mainValues =
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141 new ArrayList<ImportMainValue>();
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142
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143 while ((line = in.readLine()) != null) {
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144 Matcher m = QWTD_.matcher(line);
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145 if (m.matches()) {
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146 BigDecimal value;
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147 try {
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148 value = new BigDecimal(m.group(2).replace(",", "."));
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149 }
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150 catch (NumberFormatException nfe) {
3660
976ead36192d backend: Mention backend warnings in importer.
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151 log.warn("STA: value not parseable in line "
1211
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152 + in.getLineNumber());
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153 continue;
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154 }
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155 String typeString = m.group(3);
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156 log.debug("\t type: " + typeString);
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157 ImportMainValueType type = types.get(typeString);
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158 if (type == null) {
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159 type = new ImportMainValueType(typeString);
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160 types.put(typeString, type);
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161 }
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162 String name = m.group(1);
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163 ImportNamedMainValue namedMainValue =
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164 new ImportNamedMainValue(type, name);
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165 namedMainValues.add(namedMainValue);
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166
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167 ImportMainValue mainValue =
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168 new ImportMainValue(gauge, namedMainValue, value);
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169
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170 mainValues.add(mainValue);
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171 }
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172 else {
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173 // TODO: treat as a comment
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174 }
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175 }
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176 gauge.setMainValueTypes(
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177 new ArrayList<ImportMainValueType>(types.values()));
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178 gauge.setNamedMainValues(namedMainValues);
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179 gauge.setMainValues(mainValues);
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180 }
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181 finally {
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182 if (in != null) {
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183 in.close();
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184 }
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185 }
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186 log.info("finished parsing STA file: " + file);
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187 return true;
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188 }
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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