Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/AnnotationClassifier.java @ 5278:3ddf5843ede3
correct session-handling for bed height import (made by S. Teichmann)
author | Tom Gottfried <tom.gottfried@intevation.de> |
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date | Wed, 13 Mar 2013 18:53:42 +0100 |
parents | 0d27d02b1208 |
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1 package de.intevation.flys.importer.parsers; |
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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 import de.intevation.flys.importer.ImportAnnotationType; |
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22 import de.intevation.flys.importer.Importer; |
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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("ANNCLASS: 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("ANNCLASS: 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("ANNCLASS: 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("ANNCLASS: 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("ANNCLASS: 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 : |