Mercurial > dive4elements > river

annotate backend/src/main/java/org/dive4elements/river/importer/parsers/AnnotationClassifier.java @ 7639:11bc2d6a2059

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Removed obsolete imports.
author Sascha L. Teichmann <teichmann@intevation.de>
date Tue, 03 Dec 2013 16:11:54 +0100
parents 9344aa0fb021
children 0a5239a1e46e
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.importer.parsers;
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10
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11 import org.w3c.dom.Document;
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12 import org.w3c.dom.NodeList;
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13 import org.w3c.dom.Element;
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14
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15 import javax.xml.xpath.XPathConstants;
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16
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17 import java.util.Map;
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18 import java.util.HashMap;
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19 import java.util.List;
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20 import java.util.ArrayList;
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21
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22 import java.util.regex.Pattern;
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23 import java.util.regex.Matcher;
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24
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25 import org.apache.log4j.Logger;
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26
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27 import org.dive4elements.artifacts.common.utils.XMLUtils;
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28
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29 import org.dive4elements.river.importer.ImportAnnotationType;
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30
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31 public class AnnotationClassifier
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32 {
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33 private static Logger log = Logger.getLogger(AnnotationClassifier.class);
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34
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35 public static final String TYPES_XPATH =
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36 "/annotation/types/type";
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37
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38 public static final String FILE_PATTERNS_XPATH =
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39 "/annotation/patterns/file";
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40
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41 public static final String DESCRIPTION_PATTERNS_XPATH =
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42 "/annotation/patterns/line";
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43
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44
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45 public static class Pair {
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46
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47 protected Pattern pattern;
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48 protected ImportAnnotationType annType;
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49
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50 public Pair(Pattern pattern, ImportAnnotationType annType) {
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51 this.pattern = pattern;
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52 this.annType = annType;
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53 }
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54
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55 public ImportAnnotationType match(String s) {
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56 Matcher m = pattern.matcher(s);
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57 return m.matches() ? annType : null;
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58 }
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59 } // class Pair
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60
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61
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62 protected Map<String, ImportAnnotationType> types;
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63 protected List<Pair> filePatterns;
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64 protected List<Pair> descPatterns;
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65
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66 protected ImportAnnotationType defaultType;
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67
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68 public AnnotationClassifier() {
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69 }
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70
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71 public AnnotationClassifier(Document rules) {
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72 types = new HashMap<String, ImportAnnotationType>();
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73 filePatterns = new ArrayList<Pair>();
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74 descPatterns = new ArrayList<Pair>();
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75
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76 buildRules(rules);
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77 }
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78
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79 protected void buildRules(Document rules) {
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80 buildTypes(rules);
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81 buildFilePatterns(rules);
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82 buildDescriptionPatterns(rules);
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83 }
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84
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85 protected void buildTypes(Document rules) {
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86
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87 NodeList typeList = (NodeList)XMLUtils.xpath(
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88 rules,
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89 TYPES_XPATH,
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90 XPathConstants.NODESET,
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91 null);
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92
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93 if (typeList == null) {
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94 log.info("no rules found.");
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95 return;
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96 }
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97
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98 for (int i = 0, N = typeList.getLength(); i < N; ++i) {
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99 Element typeElement = (Element)typeList.item(i);
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100 String name = typeElement.getAttribute("name");
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101 if (name.length() == 0) {
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102 log.warn("ANNCLASS: rule has no name");
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103 continue;
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104 }
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105
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106 ImportAnnotationType aic = new ImportAnnotationType(name);
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107
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108 types.put(name, aic);
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109
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110 if (typeElement.getAttribute("default").equals("true")) {
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111 defaultType = aic;
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112 }
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113 }
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114 }
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115
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116 protected void buildFilePatterns(Document rules) {
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117
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118 NodeList patternList = (NodeList)XMLUtils.xpath(
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119 rules,
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120 FILE_PATTERNS_XPATH,
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121 XPathConstants.NODESET,
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122 null);
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123
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124 if (patternList == null) {
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125 log.info("no file patterns found.");
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126 return;
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127 }
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128
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129 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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130 Element element = (Element)patternList.item(i);
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131 Pair pair = buildPair(element);
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132 if (pair != null) {
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133 filePatterns.add(pair);
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134 }
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135 }
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136 }
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137
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138 protected void buildDescriptionPatterns(Document rules) {
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139
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140 NodeList patternList = (NodeList)XMLUtils.xpath(
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141 rules,
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142 DESCRIPTION_PATTERNS_XPATH,
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143 XPathConstants.NODESET,
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144 null);
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145
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146 if (patternList == null) {
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147 log.info("no line patterns found.");
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148 return;
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149 }
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150
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151 for (int i = 0, N = patternList.getLength(); i < N; ++i) {
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152 Element element = (Element)patternList.item(i);
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153 Pair pair = buildPair(element);
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154 if (pair != null) {
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155 descPatterns.add(pair);
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156 }
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157 }
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158 }
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159
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160 protected Pair buildPair(Element element) {
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161 String pattern = element.getAttribute("pattern");
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162 String type = element.getAttribute("type");
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163
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164 if (pattern.length() == 0) {
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165 log.warn("ANNCLASS: pattern has no 'pattern' attribute.");
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166 return null;
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167 }
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168
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169 if (type.length() == 0) {
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170 log.warn("ANNCLASS: pattern has no 'type' attribute.");
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171 return null;
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172 }
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173
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174 ImportAnnotationType annType = types.get(type);
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175
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176 if (annType == null) {
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177 log.warn("ANNCLASS: pattern has unknown type '" + type + "'");
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178 return null;
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179 }
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180
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181 Pattern p;
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182
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183 try {
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184 p = Pattern.compile(pattern,
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185 Pattern.CASE_INSENSITIVE|Pattern.UNICODE_CASE);
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186 }
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187 catch (IllegalArgumentException iae) {
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188 log.warn("ANNCLASS: pattern '" + pattern + "' is invalid.", iae);
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189 return null;
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190 }
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191
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192 return new Pair(p, annType);
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193 }
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194
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195 public ImportAnnotationType getDefaultType() {
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196 return defaultType;
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197 }
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198
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199 public ImportAnnotationType classifyFile(String filename) {
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200 return classifyFile(filename, null);
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201 }
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202
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203 public ImportAnnotationType classifyFile(
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204 String filename,
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205 ImportAnnotationType def
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206 ) {
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207 if (filename.toLowerCase().endsWith(".km")) {
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208 filename = filename.substring(0, filename.length()-3);
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209 }
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210
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211 for (Pair pair: filePatterns) {
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212 ImportAnnotationType annType = pair.match(filename);
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213 if (annType != null) {
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214 return annType;
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215 }
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216 }
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217
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218 return def;
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219 }
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220
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221 public ImportAnnotationType classifyDescription(String description) {
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222 return classifyDescription(description, null);
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223 }
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224
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225 public ImportAnnotationType classifyDescription(
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226 String description,
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227 ImportAnnotationType def
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228 ) {
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229 for (Pair pair: descPatterns) {
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230 ImportAnnotationType annType = pair.match(description);
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diff changeset
231 if (annType != null) {
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232 return annType;
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233 }
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234 }
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235
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236 return def;
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237 }
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238 }
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239 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org