Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/AnnotationClassifier.java @ 765:763c4137d6e1

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Added classification of annotation types. Needs testing! flys-backend/trunk@2162 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 19 Jun 2011 12:26:12 +0000
parents
children aa9e3da95c31
rev   line source
765
763c4137d6e1 Added classification of annotation types. Needs testing!
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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 "/annotations/types/type";
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30
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31 public static final String FILE_PATTERNS_XPATH =
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32 "/annotations/patterns/file";
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33
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34 public static final String DESCRIPTION_PATTERNS_XPATH =
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35 "/annotations/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
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74 buildTypes(rules);
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75 buildFilePatterns(rules);
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76 buildDescriptionPatterns(rules);
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77 }
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78
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79 protected void buildTypes(Document rules) {
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80
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81 NodeList typeList = (NodeList)XMLUtils.xpath(
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82 rules,
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83 TYPES_XPATH,
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84 XPathConstants.NODESET,
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85 null);
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86
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87 if (typeList == null) {
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88 log.info("no rules found.");
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89 return;
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90 }
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91
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92 for (int i = 0, N = typeList.getLength(); i < N; ++i) {
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93 Element typeElement = (Element)typeList.item(i);
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94 String name = typeElement.getAttribute("name");
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95 if (name.length() == 0) {
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96 log.warn("rule has no name");
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97 continue;
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98 }
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99
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100 ImportAnnotationType aic = new ImportAnnotationType(name);
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101
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102 types.put(name, aic);
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103
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104 if (typeElement.getAttribute("default").equals("true")) {
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105 defaultType = aic;
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106 }
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107 }
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108 }
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109
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110 protected void buildFilePatterns(Document rules) {
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111
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112 NodeList patternList = (NodeList)XMLUtils.xpath(
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113 rules,
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114 FILE_PATTERNS_XPATH,
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115 XPathConstants.NODESET,
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116 null);
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117
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118 if (patternList == null) {
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119 log.info("no file patterns found.");
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120 return;
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121 }
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122
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123 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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124 Element element = (Element)patternList.item(i);
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125 Pair pair = buildPair(element);
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126 if (pair != null) {
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127 filePatterns.add(pair);
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128 }
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129 }
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130 }
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131
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132 protected void buildDescriptionPatterns(Document rules) {
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133
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134 NodeList patternList = (NodeList)XMLUtils.xpath(
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135 rules,
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136 DESCRIPTION_PATTERNS_XPATH,
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137 XPathConstants.NODESET,
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138 null);
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139
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140 if (patternList == null) {
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141 log.info("no line patterns found.");
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142 return;
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143 }
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144
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145 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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146 Element element = (Element)patternList.item(i);
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147 Pair pair = buildPair(element);
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148 if (pair != null) {
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149 descPatterns.add(pair);
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150 }
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151 }
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152 }
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153
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154 protected Pair buildPair(Element element) {
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155 String pattern = element.getAttribute("pattern");
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156 String type = element.getAttribute("type");
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157
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158 if (pattern.length() == 0) {
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159 log.warn("pattern has no 'pattern' attribute.");
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160 return null;
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161 }
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162
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163 if (type.length() == 0) {
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164 log.warn("pattern has no 'type' attribute.");
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165 return null;
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166 }
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167
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168 ImportAnnotationType annType = types.get(type);
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169
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170 if (annType == null) {
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171 log.warn("pattern has unknown type '" + type + "'");
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172 return null;
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173 }
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174
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175 Pattern p;
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176
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177 try {
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178 p = Pattern.compile(pattern,
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179 Pattern.CASE_INSENSITIVE|Pattern.UNICODE_CASE);
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180 }
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181 catch (IllegalArgumentException iae) {
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182 log.warn("pattern '" + pattern + "' is invalid.", iae);
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183 return null;
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184 }
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185
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186 return new Pair(p, annType);
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187 }
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188
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189 public ImportAnnotationType getDefaultType() {
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190 return defaultType;
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191 }
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192
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193 public ImportAnnotationType classifyFile(String filename) {
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194 return classifyFile(filename, null);
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195 }
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196
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197 public ImportAnnotationType classifyFile(
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198 String filename,
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199 ImportAnnotationType def
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200 ) {
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201 if (filename.toLowerCase().endsWith(".km")) {
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202 filename = filename.substring(0, filename.length()-3);
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203 }
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204
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205 for (Pair pair: filePatterns) {
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206 ImportAnnotationType annType = pair.match(filename);
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207 if (annType != null) {
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208 return annType;
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209 }
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210 }
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211
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212 return def;
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213 }
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214
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215 public ImportAnnotationType classifyDescription(String description) {
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216 return classifyDescription(description, null);
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217 }
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218
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219 public ImportAnnotationType classifyDescription(
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220 String description,
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221 ImportAnnotationType def
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222 ) {
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223 for (Pair pair: descPatterns) {
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224 ImportAnnotationType annType = pair.match(description);
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225 if (annType != null) {
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226 return annType;
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227 }
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228 }
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229
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230 return def;
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231 }
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232 }
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233 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org