Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/AnnotationClassifier.java @ 769:321b9e480f72

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Added a method to river to find the gauge with the max overlap with a given interval. flys-backend/trunk@2235 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 26 Jun 2011 16:13:08 +0000
parents aa9e3da95c31
children 33a79496ba9e
rev   line source
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1 package de.intevation.flys.importer;
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2
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3 import org.w3c.dom.Document;
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4 import org.w3c.dom.NodeList;
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5 import org.w3c.dom.Element;
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6
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7 import javax.xml.xpath.XPathConstants;
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8
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9 import java.io.File;
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10 import java.io.IOException;
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11
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12 import java.util.Map;
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13 import java.util.HashMap;
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14 import java.util.List;
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15 import java.util.ArrayList;
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16
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17 import java.util.regex.Pattern;
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18 import java.util.regex.Matcher;
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19
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20 import org.apache.log4j.Logger;
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21
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22 import de.intevation.artifacts.common.utils.XMLUtils;
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23
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24 public class AnnotationClassifier
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25 {
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26 private static Logger log = Logger.getLogger(Importer.class);
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27
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28 public static final String TYPES_XPATH =
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29 "/annotation/types/type";
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30
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31 public static final String FILE_PATTERNS_XPATH =
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32 "/annotation/patterns/file";
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33
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34 public static final String DESCRIPTION_PATTERNS_XPATH =
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35 "/annotation/patterns/line";
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36
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37
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38 public static class Pair {
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39
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40 protected Pattern pattern;
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41 protected ImportAnnotationType annType;
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42
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43 public Pair(Pattern pattern, ImportAnnotationType annType) {
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44 this.pattern = pattern;
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45 this.annType = annType;
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46 }
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47
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48 public ImportAnnotationType match(String s) {
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49 Matcher m = pattern.matcher(s);
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50 return m.matches() ? annType : null;
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51 }
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52 } // class Pair
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53
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54
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55 protected Map<String, ImportAnnotationType> types;
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56 protected List<Pair> filePatterns;
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57 protected List<Pair> descPatterns;
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58
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59 protected ImportAnnotationType defaultType;
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60
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61 public AnnotationClassifier() {
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62 }
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63
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64 public AnnotationClassifier(Document rules) {
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65 types = new HashMap<String, ImportAnnotationType>();
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66 filePatterns = new ArrayList<Pair>();
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67 descPatterns = new ArrayList<Pair>();
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68
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69 buildRules(rules);
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70 }
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71
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72 protected void buildRules(Document rules) {
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73 buildTypes(rules);
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74 buildFilePatterns(rules);
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75 buildDescriptionPatterns(rules);
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76 }
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77
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78 protected void buildTypes(Document rules) {
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79
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80 NodeList typeList = (NodeList)XMLUtils.xpath(
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81 rules,
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82 TYPES_XPATH,
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83 XPathConstants.NODESET,
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84 null);
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85
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86 if (typeList == null) {
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87 log.info("no rules found.");
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88 return;
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89 }
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90
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91 for (int i = 0, N = typeList.getLength(); i < N; ++i) {
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92 Element typeElement = (Element)typeList.item(i);
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93 String name = typeElement.getAttribute("name");
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94 if (name.length() == 0) {
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95 log.warn("rule has no name");
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96 continue;
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97 }
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98
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99 ImportAnnotationType aic = new ImportAnnotationType(name);
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100
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101 types.put(name, aic);
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102
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103 if (typeElement.getAttribute("default").equals("true")) {
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104 defaultType = aic;
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105 }
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106 }
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107 }
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108
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109 protected void buildFilePatterns(Document rules) {
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110
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111 NodeList patternList = (NodeList)XMLUtils.xpath(
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112 rules,
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113 FILE_PATTERNS_XPATH,
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114 XPathConstants.NODESET,
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115 null);
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116
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117 if (patternList == null) {
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118 log.info("no file patterns found.");
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119 return;
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120 }
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121
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122 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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123 Element element = (Element)patternList.item(i);
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124 Pair pair = buildPair(element);
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125 if (pair != null) {
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126 filePatterns.add(pair);
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127 }
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128 }
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129 }
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130
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131 protected void buildDescriptionPatterns(Document rules) {
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132
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133 NodeList patternList = (NodeList)XMLUtils.xpath(
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134 rules,
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135 DESCRIPTION_PATTERNS_XPATH,
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136 XPathConstants.NODESET,
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137 null);
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138
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139 if (patternList == null) {
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140 log.info("no line patterns found.");
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141 return;
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142 }
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143
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144 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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145 Element element = (Element)patternList.item(i);
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146 Pair pair = buildPair(element);
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147 if (pair != null) {
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148 descPatterns.add(pair);
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149 }
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150 }
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151 }
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152
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153 protected Pair buildPair(Element element) {
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154 String pattern = element.getAttribute("pattern");
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155 String type = element.getAttribute("type");
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156
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157 if (pattern.length() == 0) {
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158 log.warn("pattern has no 'pattern' attribute.");
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159 return null;
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160 }
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161
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162 if (type.length() == 0) {
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163 log.warn("pattern has no 'type' attribute.");
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164 return null;
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165 }
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166
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167 ImportAnnotationType annType = types.get(type);
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168
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169 if (annType == null) {
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170 log.warn("pattern has unknown type '" + type + "'");
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171 return null;
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172 }
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173
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174 Pattern p;
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175
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176 try {
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177 p = Pattern.compile(pattern,
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178 Pattern.CASE_INSENSITIVE|Pattern.UNICODE_CASE);
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179 }
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180 catch (IllegalArgumentException iae) {
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181 log.warn("pattern '" + pattern + "' is invalid.", iae);
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182 return null;
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183 }
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184
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185 return new Pair(p, annType);
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186 }
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187
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188 public ImportAnnotationType getDefaultType() {
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189 return defaultType;
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190 }
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191
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192 public ImportAnnotationType classifyFile(String filename) {
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193 return classifyFile(filename, null);
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194 }
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195
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196 public ImportAnnotationType classifyFile(
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197 String filename,
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198 ImportAnnotationType def
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199 ) {
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200 if (filename.toLowerCase().endsWith(".km")) {
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201 filename = filename.substring(0, filename.length()-3);
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202 }
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203
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204 for (Pair pair: filePatterns) {
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205 ImportAnnotationType annType = pair.match(filename);
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206 if (annType != null) {
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207 return annType;
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208 }
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209 }
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210
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211 return def;
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212 }
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213
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214 public ImportAnnotationType classifyDescription(String description) {
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215 return classifyDescription(description, null);
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216 }
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217
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218 public ImportAnnotationType classifyDescription(
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219 String description,
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220 ImportAnnotationType def
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221 ) {
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222 for (Pair pair: descPatterns) {
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223 ImportAnnotationType annType = pair.match(description);
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224 if (annType != null) {
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225 return annType;
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226 }
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227 }
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228
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229 return def;
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230 }
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231 }
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232 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org