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annotate lucene/src/luan/modules/lucene/LuceneIndex.java @ 547:0be287ab0309

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add lucene/Versioning and simplify Lucene fn names
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 15 Jun 2015 01:22:58 -0600
parents eaef1005ab87
children f1601a4ce1aa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package luan.modules.lucene;
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2
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3 import java.io.Closeable;
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4 import java.io.File;
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5 import java.io.FileOutputStream;
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6 import java.io.FileInputStream;
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7 import java.io.IOException;
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8 import java.util.Iterator;
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9 import java.util.Map;
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10 import java.util.List;
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11 import java.util.ArrayList;
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12 import java.util.Set;
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13 import java.util.concurrent.locks.Lock;
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14 import java.util.concurrent.locks.ReentrantLock;
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15 import java.util.zip.ZipOutputStream;
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16 import java.util.zip.ZipEntry;
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17 import org.apache.lucene.analysis.Analyzer;
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18 import org.apache.lucene.analysis.core.KeywordAnalyzer;
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19 import org.apache.lucene.document.Document;
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20 import org.apache.lucene.document.Field;
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21 import org.apache.lucene.document.StoredField;
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22 import org.apache.lucene.document.StringField;
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23 import org.apache.lucene.document.IntField;
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24 import org.apache.lucene.document.LongField;
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25 import org.apache.lucene.document.DoubleField;
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26 import org.apache.lucene.index.IndexableField;
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27 import org.apache.lucene.index.IndexWriter;
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28 import org.apache.lucene.index.IndexWriterConfig;
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29 import org.apache.lucene.index.DirectoryReader;
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30 import org.apache.lucene.index.Term;
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31 import org.apache.lucene.index.SnapshotDeletionPolicy;
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32 import org.apache.lucene.index.IndexCommit;
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33 import org.apache.lucene.index.AtomicReaderContext;
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34 import org.apache.lucene.store.Directory;
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35 import org.apache.lucene.store.FSDirectory;
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36 import org.apache.lucene.util.Version;
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37 import org.apache.lucene.util.BytesRef;
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38 import org.apache.lucene.util.NumericUtils;
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39 import org.apache.lucene.search.Query;
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40 import org.apache.lucene.search.TermQuery;
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41 import org.apache.lucene.search.TopDocs;
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42 import org.apache.lucene.search.Sort;
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43 import org.apache.lucene.search.SortField;
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44 import org.apache.lucene.search.IndexSearcher;
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45 import org.apache.lucene.search.TotalHitCountCollector;
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46 import org.apache.lucene.search.ScoreDoc;
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47 import org.apache.lucene.search.Collector;
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48 import org.apache.lucene.search.Scorer;
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49 import sane.lucene.queryparser.SaneQueryParser;
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50 import sane.lucene.queryparser.FieldParser;
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51 import sane.lucene.queryparser.MultiFieldParser;
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52 import sane.lucene.queryparser.StringFieldParser;
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53 import sane.lucene.queryparser.NumberFieldParser;
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54 import sane.lucene.queryparser.ParseException;
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55 import luan.modules.Utils;
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56 import luan.Luan;
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57 import luan.LuanState;
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58 import luan.LuanTable;
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59 import luan.LuanFunction;
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60 import luan.LuanJavaFunction;
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61 import luan.LuanException;
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62 import luan.LuanMeta;
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63 import luan.LuanRuntimeException;
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64 import org.slf4j.Logger;
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65 import org.slf4j.LoggerFactory;
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66
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67
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68 public final class LuceneIndex implements Closeable {
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69 private static final Logger logger = LoggerFactory.getLogger(LuceneIndex.class);
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70
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71 private static final String FLD_NEXT_ID = "nextId";
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72 private static final Analyzer analyzer = new KeywordAnalyzer();
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73 public static final FieldParser STRING_FIELD_PARSER = new StringFieldParser(analyzer);
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74
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75 private final ReentrantLock writeLock = new ReentrantLock();
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76 private final File indexDir;
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77 final SnapshotDeletionPolicy snapshotDeletionPolicy;
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78 private final IndexWriter writer;
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79 private DirectoryReader reader;
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80 private IndexSearcher searcher;
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81 private final ThreadLocal<IndexSearcher> threadLocalSearcher = new ThreadLocal<IndexSearcher>();
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82 private boolean isClosed = false;
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83 private final MultiFieldParser mfp = new MultiFieldParser();
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84
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85 public LuceneIndex(LuanState luan,String indexDirStr) throws LuanException, IOException {
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86 mfp.fields.put( "type", STRING_FIELD_PARSER );
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87 mfp.fields.put( "id", NumberFieldParser.LONG );
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88 File indexDir = new File(indexDirStr);
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89 this.indexDir = indexDir;
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90 Directory dir = FSDirectory.open(indexDir);
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91 Version version = Version.LUCENE_4_9;
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92 IndexWriterConfig conf = new IndexWriterConfig(version,analyzer);
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93 snapshotDeletionPolicy = new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy());
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94 conf.setIndexDeletionPolicy(snapshotDeletionPolicy);
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95 writer = new IndexWriter(dir,conf);
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96 writer.commit(); // commit index creation
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97 reader = DirectoryReader.open(dir);
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98 luan.onClose(this);
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99 searcher = new IndexSearcher(reader);
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100 initId(luan);
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101 }
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102
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104
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105 public void delete_all() throws IOException {
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106 boolean commit = !writeLock.isHeldByCurrentThread();
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107 writeLock.lock();
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108 try {
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109 writer.deleteAll();
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110 id = idLim = 0;
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111 if(commit) writer.commit();
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112 } finally {
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113 writeLock.unlock();
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114 }
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115 }
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116
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117 private static Term term(String key,long value) {
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118 BytesRef br = new BytesRef();
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119 NumericUtils.longToPrefixCoded(value,0,br);
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120 return new Term(key,br);
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121 }
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122
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123 public void delete(LuanState luan,String queryStr) throws LuanException, IOException, ParseException {
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124 Query query = SaneQueryParser.parseQuery(mfp,queryStr);
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125
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126 boolean commit = !writeLock.isHeldByCurrentThread();
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127 writeLock.lock();
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128 try {
547
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129 writer.deleteDocuments(query);
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130 if(commit) writer.commit();
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131 } finally {
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132 writeLock.unlock();
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133 }
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134 }
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135
547
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136 public void save(LuanState luan,LuanTable doc) throws LuanException, IOException {
546
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137 if( doc.get(luan,"type")==null )
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138 throw luan.exception("missing 'type' field");
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139 Long id = (Long)doc.get(luan,"id");
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140
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141 boolean commit = !writeLock.isHeldByCurrentThread();
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142 writeLock.lock();
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143 try {
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144 if( id == null ) {
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145 id = nextId(luan);
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146 doc.put(luan,"id",id);
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147 writer.addDocument(toLucene(luan,doc));
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148 } else {
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149 writer.updateDocument( term("id",id), toLucene(luan,doc) );
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150 }
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151 if(commit) writer.commit();
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152 } finally {
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153 writeLock.unlock();
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154 }
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155 }
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156
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157 public void update_in_transaction(LuanState luan,LuanFunction fn) throws IOException, LuanException {
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158 boolean commit = !writeLock.isHeldByCurrentThread();
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159 writeLock.lock();
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160 try {
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161 luan.call(fn);
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162 if(commit) writer.commit();
252
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163 } finally {
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164 writeLock.unlock();
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165 }
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166 }
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167
230
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168
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169 private long id = 0;
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170 private long idLim = 0;
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171 private final int idBatch = 10;
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172
233
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diff changeset
173 private void initId(LuanState luan) throws LuanException, IOException {
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diff changeset
174 TopDocs td = searcher.search(new TermQuery(new Term("type","next_id")),1);
547
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175
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176 // tmp hack
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177 if( td.totalHits == 0 ) {
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178 td = searcher.search(new TermQuery(new Term("type index","next_id")),1);
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179 if( td.totalHits == 1 ) {
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180 long idLim = (Long)searcher.doc(td.scoreDocs[0].doc).getField(FLD_NEXT_ID).numericValue();
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diff changeset
181 LuanTable doc = new LuanTable();
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diff changeset
182 doc.rawPut( "type", "next_id" );
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183 doc.rawPut( FLD_NEXT_ID, idLim );
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184 writer.addDocument(toLucene(luan,doc));
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185 writer.commit();
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186 }
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187 }
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188
230
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189 switch(td.totalHits) {
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190 case 0:
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191 break; // do nothing
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192 case 1:
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193 idLim = (Long)searcher.doc(td.scoreDocs[0].doc).getField(FLD_NEXT_ID).numericValue();
230
4438cb2e04d0 start lucene
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194 id = idLim;
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195 break;
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196 default:
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197 throw new RuntimeException();
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198 }
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199 }
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200
546
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diff changeset
201 private synchronized long nextId(LuanState luan) throws LuanException, IOException {
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202 if( ++id > idLim ) {
233
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diff changeset
203 idLim += idBatch;
411
23b99a5039b5 remove Luan.newTable()
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diff changeset
204 LuanTable doc = new LuanTable();
427
dae264ad6a7b fix LuanTable.put() to use metatables
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diff changeset
205 doc.rawPut( "type", "next_id" );
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diff changeset
206 doc.rawPut( FLD_NEXT_ID, idLim );
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diff changeset
207 writer.updateDocument(new Term("type","next_id"),toLucene(luan,doc));
230
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208 }
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diff changeset
209 return id;
230
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210 }
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211
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212
233
ef39bc4d3f70 basic lucene works
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diff changeset
213 public void backup(LuanState luan,String zipFile) throws LuanException, IOException {
230
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214 if( !zipFile.endsWith(".zip") )
233
ef39bc4d3f70 basic lucene works
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diff changeset
215 throw luan.exception("file "+zipFile+" doesn't end with '.zip'");
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eaef1005ab87 general lucene cleanup
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diff changeset
216 IndexCommit ic = snapshotDeletionPolicy.snapshot();
230
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217 try {
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218 ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
546
eaef1005ab87 general lucene cleanup
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diff changeset
219 for( String fileName : ic.getFileNames() ) {
230
4438cb2e04d0 start lucene
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parents:
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220 out.putNextEntry(new ZipEntry(fileName));
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diff changeset
221 FileInputStream in = new FileInputStream(new File(indexDir,fileName));
4438cb2e04d0 start lucene
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diff changeset
222 Utils.copyAll(in,out);
4438cb2e04d0 start lucene
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diff changeset
223 in.close();
4438cb2e04d0 start lucene
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diff changeset
224 out.closeEntry();
4438cb2e04d0 start lucene
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225 }
4438cb2e04d0 start lucene
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parents:
diff changeset
226 out.close();
4438cb2e04d0 start lucene
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227 } finally {
546
eaef1005ab87 general lucene cleanup
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diff changeset
228 snapshotDeletionPolicy.release(ic);
230
4438cb2e04d0 start lucene
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229 }
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parents:
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230 }
4438cb2e04d0 start lucene
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parents:
diff changeset
231
4438cb2e04d0 start lucene
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parents:
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232
4438cb2e04d0 start lucene
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parents:
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233
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234 public String to_string() {
4438cb2e04d0 start lucene
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235 return writer.getDirectory().toString();
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236 }
4438cb2e04d0 start lucene
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237
303
fdb4bd391c28 add lucene close();
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diff changeset
238 public void close() throws IOException {
521
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
239 if( !isClosed ) {
8a217fe5b4f3 cleaner LuanState.onClose()
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diff changeset
240 writer.close();
8a217fe5b4f3 cleaner LuanState.onClose()
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diff changeset
241 reader.close();
8a217fe5b4f3 cleaner LuanState.onClose()
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diff changeset
242 isClosed = true;
8a217fe5b4f3 cleaner LuanState.onClose()
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parents: 427
diff changeset
243 }
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
244 }
8a217fe5b4f3 cleaner LuanState.onClose()
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parents: 427
diff changeset
245
8a217fe5b4f3 cleaner LuanState.onClose()
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diff changeset
246 protected void finalize() throws Throwable {
8a217fe5b4f3 cleaner LuanState.onClose()
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diff changeset
247 if( !isClosed ) {
8a217fe5b4f3 cleaner LuanState.onClose()
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parents: 427
diff changeset
248 logger.error("not closed");
8a217fe5b4f3 cleaner LuanState.onClose()
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parents: 427
diff changeset
249 close();
8a217fe5b4f3 cleaner LuanState.onClose()
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parents: 427
diff changeset
250 }
8a217fe5b4f3 cleaner LuanState.onClose()
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parents: 427
diff changeset
251 super.finalize();
230
4438cb2e04d0 start lucene
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252 }
4438cb2e04d0 start lucene
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parents:
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253
312
d34be4588556 add lucene query parsing
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parents: 303
diff changeset
254
544
c5a93767cc5c lucene overhaul, untested
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diff changeset
255
545
ddcd4296107a clean up lucene search
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diff changeset
256 private static class DocFn extends LuanFunction {
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diff changeset
257 final IndexSearcher searcher;
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diff changeset
258 int docID;
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259
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260 DocFn(IndexSearcher searcher) {
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261 this.searcher = searcher;
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262 }
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263
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264 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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265 try {
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266 return toTable(luan,searcher.doc(docID));
545
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267 } catch(IOException e) {
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268 throw luan.exception(e);
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269 }
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270 }
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271 }
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272
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273 private static abstract class MyCollector extends Collector {
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274 int docBase;
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275 int i = 0;
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276
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277 @Override public void setScorer(Scorer scorer) {}
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278 @Override public void setNextReader(AtomicReaderContext context) {
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279 this.docBase = context.docBase;
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280 }
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281 @Override public boolean acceptsDocsOutOfOrder() {
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282 return true;
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283 }
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284 }
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285
546
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286 private synchronized IndexSearcher openSearcher() throws IOException {
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287 DirectoryReader newReader = DirectoryReader.openIfChanged(reader);
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288 if( newReader != null ) {
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289 reader.decRef();
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290 reader = newReader;
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291 searcher = new IndexSearcher(reader);
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292 }
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293 reader.incRef();
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294 return searcher;
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295 }
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296
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297 // call in finally block
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298 private static void close(IndexSearcher searcher) throws IOException {
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299 searcher.getIndexReader().decRef();
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300 }
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301
545
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302 public int advanced_search( final LuanState luan, String queryStr, LuanFunction fn, Integer n, String sortStr ) throws LuanException, IOException, ParseException {
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303 Utils.checkNotNull(luan,queryStr);
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304 Query query = SaneQueryParser.parseQuery(mfp,queryStr);
545
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305 IndexSearcher searcher = threadLocalSearcher.get();
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306 boolean inTransaction = searcher != null;
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307 if( !inTransaction )
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308 searcher = openSearcher();
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309 try {
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310 if( fn!=null && n==null ) {
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311 if( sortStr != null )
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312 throw luan.exception("sort must be nil when n is nil");
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313 final DocFn docFn = new DocFn(searcher);
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314 MyCollector col = new MyCollector() {
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315 @Override public void collect(int doc) {
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316 try {
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317 docFn.docID = docBase + doc;
545
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318 luan.call(fn,new Object[]{++i,docFn});
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319 } catch(LuanException e) {
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320 throw new LuanRuntimeException(e);
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321 }
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322 }
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323 };
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324 try {
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325 searcher.search(query,col);
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326 } catch(LuanRuntimeException e) {
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327 throw (LuanException)e.getCause();
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328 }
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329 return col.i;
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330 }
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331 if( fn==null || n==0 ) {
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332 TotalHitCountCollector thcc = new TotalHitCountCollector();
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333 searcher.search(query,thcc);
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334 return thcc.getTotalHits();
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335 }
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336 Sort sort = sortStr==null ? null : SaneQueryParser.parseSort(mfp,sortStr);
545
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337 TopDocs td = sort==null ? searcher.search(query,n) : searcher.search(query,n,sort);
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338 final ScoreDoc[] scoreDocs = td.scoreDocs;
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339 DocFn docFn = new DocFn(searcher);
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340 for( int i=0; i<scoreDocs.length; i++ ) {
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341 docFn.docID = scoreDocs[i].doc;
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342 luan.call(fn,new Object[]{i+1,docFn});
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343 }
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344 return td.totalHits;
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345 } finally {
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346 if( !inTransaction )
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347 close(searcher);
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348 }
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349 }
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350
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351 public Object search_in_transaction(LuanState luan,LuanFunction fn) throws LuanException, IOException {
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352 if( threadLocalSearcher.get() != null )
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353 throw luan.exception("can't nest search_in_transaction calls");
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354 IndexSearcher searcher = openSearcher();
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355 threadLocalSearcher.set(searcher);
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356 try {
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357 return luan.call(fn);
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358 } finally {
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359 threadLocalSearcher.set(null);
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360 close(searcher);
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361 }
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362 }
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diff changeset
363
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diff changeset
364
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diff changeset
365
544
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366 public final LuanMeta indexedFieldsMeta = new LuanMeta() {
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367
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368 @Override public boolean canNewindex() {
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369 return true;
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370 }
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371
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372 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) {
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373 return mfp.fields.get(key);
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374 }
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375
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376 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object value) throws LuanException {
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377 if( !(key instanceof String) )
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378 throw luan.exception("key must be string");
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diff changeset
379 String field = (String)key;
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diff changeset
380 if( value==null ) { // delete
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381 mfp.fields.remove(field);
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382 return;
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383 }
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384 if( !(value instanceof FieldParser) )
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diff changeset
385 throw luan.exception("value must be FieldParser like the values of Lucene.type");
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diff changeset
386 FieldParser parser = (FieldParser)value;
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387 mfp.fields.put( field, parser );
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388 }
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389
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diff changeset
390 @Override public final Iterator keys(LuanTable tbl) {
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diff changeset
391 return mfp.fields.keySet().iterator();
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392 }
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393
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diff changeset
394 @Override protected String type(LuanTable tbl) {
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diff changeset
395 return "lucene-indexed-fields";
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diff changeset
396 }
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diff changeset
397
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diff changeset
398 };
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diff changeset
399
546
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diff changeset
400
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diff changeset
401
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diff changeset
402
eaef1005ab87 general lucene cleanup
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diff changeset
403 private Document toLucene(LuanState luan,LuanTable table) throws LuanException {
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diff changeset
404 Set<String> indexed = mfp.fields.keySet();
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diff changeset
405 Document doc = new Document();
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diff changeset
406 for( Map.Entry<Object,Object> entry : table.iterable(luan) ) {
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diff changeset
407 Object key = entry.getKey();
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diff changeset
408 if( !(key instanceof String) )
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diff changeset
409 throw luan.exception("key must be string");
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diff changeset
410 String name = (String)key;
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diff changeset
411 Object value = entry.getValue();
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diff changeset
412 if( value instanceof String ) {
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diff changeset
413 String s = (String)value;
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diff changeset
414 if( indexed.contains(name) ) {
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diff changeset
415 doc.add(new StringField(name, s, Field.Store.YES));
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diff changeset
416 } else {
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diff changeset
417 doc.add(new StoredField(name, s));
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diff changeset
418 }
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diff changeset
419 } else if( value instanceof Integer ) {
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diff changeset
420 int i = (Integer)value;
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diff changeset
421 if( indexed.contains(name) ) {
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diff changeset
422 doc.add(new IntField(name, i, Field.Store.YES));
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diff changeset
423 } else {
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diff changeset
424 doc.add(new StoredField(name, i));
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diff changeset
425 }
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diff changeset
426 } else if( value instanceof Long ) {
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diff changeset
427 long i = (Long)value;
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428 if( indexed.contains(name) ) {
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429 doc.add(new LongField(name, i, Field.Store.YES));
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430 } else {
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431 doc.add(new StoredField(name, i));
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432 }
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433 } else if( value instanceof Double ) {
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434 double i = (Double)value;
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435 if( indexed.contains(name) ) {
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436 doc.add(new DoubleField(name, i, Field.Store.YES));
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437 } else {
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438 doc.add(new StoredField(name, i));
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439 }
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440 } else if( value instanceof byte[] ) {
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441 byte[] b = (byte[])value;
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442 doc.add(new StoredField(name, b));
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443 } else
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444 throw luan.exception("invalid value type "+value.getClass()+"' for '"+name+"'");
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445 }
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446 return doc;
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447 }
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448
546
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449 private static LuanTable toTable(LuanState luan,Document doc) throws LuanException {
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450 if( doc==null )
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451 return null;
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452 LuanTable table = new LuanTable();
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453 for( IndexableField ifld : doc ) {
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454 String name = ifld.name();
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455 BytesRef br = ifld.binaryValue();
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456 if( br != null ) {
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457 table.rawPut(name,br.bytes);
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458 continue;
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459 }
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460 Number n = ifld.numericValue();
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461 if( n != null ) {
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462 table.rawPut(name,n);
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463 continue;
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464 }
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465 String s = ifld.stringValue();
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466 if( s != null ) {
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467 table.rawPut(name,s);
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468 continue;
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469 }
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470 throw luan.exception("invalid field type for "+ifld);
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471 }
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472 return table;
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473 }
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474
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4438cb2e04d0 start lucene
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475 }