annotate src/goodjava/lucene/api/LuceneIndexWriter.java @ 1531:fa39e3c356ae

minor
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 02 Aug 2020 16:44:38 -0600
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children c27dc6af87ca
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1 package goodjava.lucene.api;
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2
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3 import java.io.IOException;
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4 import java.util.Map;
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5 import java.util.HashMap;
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6 import java.util.List;
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7 import org.apache.lucene.analysis.Analyzer;
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8 import org.apache.lucene.document.Document;
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9 import org.apache.lucene.document.Field;
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10 import org.apache.lucene.document.StoredField;
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11 import org.apache.lucene.document.StringField;
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12 import org.apache.lucene.document.TextField;
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13 import org.apache.lucene.document.IntField;
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14 import org.apache.lucene.document.LongField;
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15 import org.apache.lucene.document.DoubleField;
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16 import org.apache.lucene.document.FloatField;
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17 import org.apache.lucene.index.IndexWriter;
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18 import org.apache.lucene.index.IndexWriterConfig;
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19 import org.apache.lucene.index.LiveIndexWriterConfig;
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20 import org.apache.lucene.index.Term;
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21 import org.apache.lucene.index.DirectoryReader;
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22 import org.apache.lucene.index.IndexReader;
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23 import org.apache.lucene.index.CheckIndex;
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24 import org.apache.lucene.search.Query;
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25 import org.apache.lucene.search.IndexSearcher;
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26 import org.apache.lucene.store.Directory;
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27 import goodjava.logging.Logger;
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28 import goodjava.logging.LoggerFactory;
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30
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31 public final class LuceneIndexWriter implements GoodIndexWriter {
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32 private static final Logger logger = LoggerFactory.getLogger(LuceneIndexWriter.class);
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33 private final FieldAnalyzer fieldAnalyzer;
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34 public final IndexWriter luceneWriter;
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35 public final GoodIndexWriterConfig goodConfig;
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36 private final Map<String,Boolean> indexedMap = new HashMap<String,Boolean>();
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37
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38 public LuceneIndexWriter(Directory dir,GoodIndexWriterConfig goodConfig) throws IOException {
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39 IndexWriterConfig luceneConfig = goodConfig.newLuceneConfig();
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40 Analyzer analyzer = luceneConfig.getAnalyzer();
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41 if( !(analyzer instanceof FieldAnalyzer) )
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42 throw new RuntimeException("analyzer must be FieldAnalyzer");
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43 this.fieldAnalyzer = (FieldAnalyzer)analyzer;
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44 this.luceneWriter = new IndexWriter(dir,luceneConfig);
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45 this.goodConfig = goodConfig;
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46 luceneWriter.commit(); // commit index creation
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47 }
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48
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49 public Directory getDirectory() {
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50 return luceneWriter.getDirectory();
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51 }
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52
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53 public LiveIndexWriterConfig getLuceneConfig() {
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54 return luceneWriter.getConfig();
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55 }
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56
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57 public void close() throws IOException {
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58 luceneWriter.close();
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59 }
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61 public void commit() throws IOException {
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62 luceneWriter.commit();
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63 }
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64
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65 public void rollback() throws IOException {
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66 luceneWriter.rollback();
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67 }
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68
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69 public void deleteAll() throws IOException {
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70 luceneWriter.deleteAll();
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71 }
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72
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73 public void deleteDocuments(Query query) throws IOException {
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74 luceneWriter.deleteDocuments(query);
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75 }
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77 public void addDocument(Map<String,Object> storedFields) throws IOException {
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78 Document doc = newDocument(storedFields);
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79 luceneWriter.addDocument(doc);
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80 }
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81
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82 public void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException {
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83 if( !isIndexed(keyFieldName) )
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84 throw new RuntimeException("can't update using unindexed field "+keyFieldName);
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85 if( fieldAnalyzer.isAdded(keyFieldName) )
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86 throw new RuntimeException("can't update using analyzed field "+keyFieldName);
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87 Document doc = newDocument(storedFields);
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88 Object keyValue = storedFields.get(keyFieldName);
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89 if( keyValue==null )
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90 throw new RuntimeException("no value for field "+keyFieldName);
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91 Term term = LuceneUtils.term(keyFieldName,keyValue);
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92 luceneWriter.updateDocument(term,doc);
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93 }
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94
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95 private Document newDocument(Map<String,Object> storedFields) {
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96 Document doc = new Document();
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97 MoreFieldInfo more = goodConfig.getMoreFieldInfo(storedFields);
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98 addFields(doc,storedFields,Field.Store.YES,more.boosts);
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99 addFields(doc,more.unstoredFields,Field.Store.NO,more.boosts);
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100 return doc;
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101 }
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102
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103 private void addFields( Document doc, Map<String,Object> fields, Field.Store store, Map<String,Float> boosts ) {
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104 for( Map.Entry<String,Object> entry : fields.entrySet() ) {
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105 String name = entry.getKey();
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106 Object value = entry.getValue();
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107 Float boost = boosts.get(name);
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108 if( value instanceof List ) {
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109 for( Object v : (List)value ) {
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110 doc.add( newField(name,v,store,boost) );
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111 }
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112 } else {
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113 doc.add( newField(name,value,store,boost) );
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114 }
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115 }
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116 }
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117
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118 private Field newField( String name, Object value, Field.Store store, Float boost ) {
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119 Field field = newField(name,value,store);
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120 if( boost != null )
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121 field.setBoost(boost);
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122 return field;
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123 }
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124
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125 private Field newField( String name, Object value, Field.Store store ) {
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126 boolean isIndexed = isIndexed(name);
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127 if( store==Field.Store.NO && !isIndexed )
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128 throw new RuntimeException("field '"+name+"' is unstored and unindexed");
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129 if( value instanceof String ) {
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130 String s = (String)value;
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131 if( !isIndexed ) {
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132 return new StoredField(name,s);
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133 } else if( !fieldAnalyzer.isAdded(name) ) {
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134 return new StringField(name,s,store);
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135 } else {
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136 return new TextField(name,s,store);
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137 }
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138 } else if( value instanceof Integer ) {
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139 int i = (Integer)value;
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140 if( !isIndexed ) {
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141 return new StoredField(name,i);
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142 } else {
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143 return new IntField(name,i,store);
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144 }
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145 } else if( value instanceof Long ) {
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146 long i = (Long)value;
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147 if( !isIndexed ) {
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148 return new StoredField(name,i);
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149 } else {
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150 return new LongField(name,i,store);
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151 }
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152 } else if( value instanceof Double ) {
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153 double i = (Double)value;
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154 if( !isIndexed ) {
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155 return new StoredField(name,i);
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156 } else {
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157 return new DoubleField(name,i,store);
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158 }
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159 } else if( value instanceof Float ) {
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160 float i = (Float)value;
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161 if( !isIndexed ) {
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162 return new StoredField(name,i);
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163 } else {
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164 return new FloatField(name,i,store);
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165 }
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166 } else if( value instanceof byte[] ) {
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167 if( isIndexed )
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168 throw new RuntimeException("can't index byte field "+name);
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169 byte[] b = (byte[])value;
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170 return new StoredField(name, b);
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171 } else
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172 throw new RuntimeException("invalid value type "+value.getClass()+"' for field '"+name+"'");
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173 }
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174
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175 private synchronized boolean isIndexed(String fieldName) {
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176 Boolean b = indexedMap.get(fieldName);
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177 if( b==null ) {
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178 b = goodConfig.isIndexed(fieldName);
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179 indexedMap.put(fieldName,b);
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180 Analyzer analyzer = goodConfig.getAnalyzer(fieldName);
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181 if( analyzer!=null )
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182 fieldAnalyzer.add(fieldName,analyzer);
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183 }
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184 return b;
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185 }
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186
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187
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188 public void reindexDocuments(final String keyFieldName,Query query) throws IOException {
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189 IndexReader reader = openReader();
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190 final IndexSearcher searcher = new IndexSearcher(reader);
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191 searcher.search( query, new GoodCollector(){
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192 public void collectDoc(int iDoc) throws IOException {
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193 Document doc = searcher.doc(iDoc);
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194 Map<String,Object> storedFields = LuceneUtils.toMap(doc);
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195 updateDocument(keyFieldName,storedFields);
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196 }
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197 });
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198 reader.close();
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199 }
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200
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201 public IndexReader openReader() throws IOException {
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202 return DirectoryReader.open(luceneWriter.getDirectory());
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203 }
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204
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205 public void check() throws IOException {
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206 CheckIndex.Status status = new CheckIndex(luceneWriter.getDirectory()).checkIndex();
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207 if( !status.clean )
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208 logger.error("index not clean");
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209 }
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210 }