Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/AnnotationClassifier.java @ 1208:2b57edd94735

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Bumped Hibernate up to 3.6.5 flys-backend/trunk@2326 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 13 Jul 2011 12:38:11 +0000
parents 6dc847194625
children
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.util.Map;
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10 import java.util.HashMap;
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11 import java.util.List;
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12 import java.util.ArrayList;
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13
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14 import java.util.regex.Pattern;
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15 import java.util.regex.Matcher;
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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.artifacts.common.utils.XMLUtils;
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20
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21 public class AnnotationClassifier
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22 {
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23 private static Logger log = Logger.getLogger(Importer.class);
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24
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25 public static final String TYPES_XPATH =
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26 "/annotation/types/type";
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27
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28 public static final String FILE_PATTERNS_XPATH =
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29 "/annotation/patterns/file";
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30
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31 public static final String DESCRIPTION_PATTERNS_XPATH =
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32 "/annotation/patterns/line";
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33
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34
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35 public static class Pair {
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36
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37 protected Pattern pattern;
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38 protected ImportAnnotationType annType;
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39
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40 public Pair(Pattern pattern, ImportAnnotationType annType) {
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41 this.pattern = pattern;
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42 this.annType = annType;
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43 }
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44
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45 public ImportAnnotationType match(String s) {
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46 Matcher m = pattern.matcher(s);
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47 return m.matches() ? annType : null;
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48 }
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49 } // class Pair
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50
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51
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52 protected Map<String, ImportAnnotationType> types;
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53 protected List<Pair> filePatterns;
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54 protected List<Pair> descPatterns;
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55
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56 protected ImportAnnotationType defaultType;
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57
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58 public AnnotationClassifier() {
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59 }
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60
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61 public AnnotationClassifier(Document rules) {
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62 types = new HashMap<String, ImportAnnotationType>();
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63 filePatterns = new ArrayList<Pair>();
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64 descPatterns = new ArrayList<Pair>();
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65
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66 buildRules(rules);
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67 }
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68
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69 protected void buildRules(Document rules) {
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70 buildTypes(rules);
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71 buildFilePatterns(rules);
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72 buildDescriptionPatterns(rules);
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73 }
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74
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75 protected void buildTypes(Document rules) {
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76
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77 NodeList typeList = (NodeList)XMLUtils.xpath(
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78 rules,
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79 TYPES_XPATH,
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80 XPathConstants.NODESET,
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81 null);
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82
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83 if (typeList == null) {
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84 log.info("no rules found.");
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85 return;
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86 }
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87
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88 for (int i = 0, N = typeList.getLength(); i < N; ++i) {
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89 Element typeElement = (Element)typeList.item(i);
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90 String name = typeElement.getAttribute("name");
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91 if (name.length() == 0) {
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92 log.warn("rule has no name");
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93 continue;
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94 }
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95
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96 ImportAnnotationType aic = new ImportAnnotationType(name);
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97
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98 types.put(name, aic);
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99
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100 if (typeElement.getAttribute("default").equals("true")) {
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101 defaultType = aic;
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102 }
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103 }
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104 }
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105
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106 protected void buildFilePatterns(Document rules) {
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107
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108 NodeList patternList = (NodeList)XMLUtils.xpath(
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109 rules,
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110 FILE_PATTERNS_XPATH,
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111 XPathConstants.NODESET,
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112 null);
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113
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114 if (patternList == null) {
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115 log.info("no file patterns found.");
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116 return;
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117 }
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118
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119 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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120 Element element = (Element)patternList.item(i);
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121 Pair pair = buildPair(element);
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122 if (pair != null) {
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123 filePatterns.add(pair);
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124 }
771
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125 }
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126 }
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127
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128 protected void buildDescriptionPatterns(Document rules) {
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129
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130 NodeList patternList = (NodeList)XMLUtils.xpath(
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131 rules,
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132 DESCRIPTION_PATTERNS_XPATH,
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133 XPathConstants.NODESET,
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134 null);
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135
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136 if (patternList == null) {
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137 log.info("no line patterns found.");
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138 return;
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139 }
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140
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141 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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142 Element element = (Element)patternList.item(i);
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143 Pair pair = buildPair(element);
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144 if (pair != null) {
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145 descPatterns.add(pair);
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146 }
771
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147 }
765
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148 }
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149
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150 protected Pair buildPair(Element element) {
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151 String pattern = element.getAttribute("pattern");
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152 String type = element.getAttribute("type");
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153
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154 if (pattern.length() == 0) {
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155 log.warn("pattern has no 'pattern' attribute.");
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156 return null;
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157 }
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158
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159 if (type.length() == 0) {
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160 log.warn("pattern has no 'type' attribute.");
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161 return null;
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162 }
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163
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164 ImportAnnotationType annType = types.get(type);
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165
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166 if (annType == null) {
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167 log.warn("pattern has unknown type '" + type + "'");
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168 return null;
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169 }
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170
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171 Pattern p;
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172
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173 try {
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174 p = Pattern.compile(pattern,
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175 Pattern.CASE_INSENSITIVE|Pattern.UNICODE_CASE);
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176 }
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177 catch (IllegalArgumentException iae) {
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178 log.warn("pattern '" + pattern + "' is invalid.", iae);
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179 return null;
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180 }
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181
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182 return new Pair(p, annType);
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183 }
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184
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185 public ImportAnnotationType getDefaultType() {
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186 return defaultType;
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187 }
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188
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189 public ImportAnnotationType classifyFile(String filename) {
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190 return classifyFile(filename, null);
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191 }
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192
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193 public ImportAnnotationType classifyFile(
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194 String filename,
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195 ImportAnnotationType def
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196 ) {
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197 if (filename.toLowerCase().endsWith(".km")) {
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198 filename = filename.substring(0, filename.length()-3);
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199 }
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200
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201 for (Pair pair: filePatterns) {
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202 ImportAnnotationType annType = pair.match(filename);
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203 if (annType != null) {
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204 return annType;
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205 }
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206 }
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207
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208 return def;
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209 }
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210
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211 public ImportAnnotationType classifyDescription(String description) {
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212 return classifyDescription(description, null);
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213 }
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214
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215 public ImportAnnotationType classifyDescription(
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216 String description,
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217 ImportAnnotationType def
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218 ) {
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219 for (Pair pair: descPatterns) {
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220 ImportAnnotationType annType = pair.match(description);
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221 if (annType != null) {
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222 return annType;
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223 }
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224 }
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225
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226 return def;
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227 }
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228 }
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229 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org