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annotate lucene/src/luan/modules/lucene/LuceneIndex.java @ 546:eaef1005ab87

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general lucene cleanup
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 14 Jun 2015 22:17:58 -0600
parents ddcd4296107a
children 0be287ab0309
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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,int value) {
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118 BytesRef br = new BytesRef();
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119 NumericUtils.intToPrefixCoded(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 private static Term term(String key,long value) {
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124 BytesRef br = new BytesRef();
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diff changeset
125 NumericUtils.longToPrefixCoded(value,0,br);
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diff changeset
126 return new Term(key,br);
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diff changeset
127 }
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diff changeset
128
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diff changeset
129 private static Term term(LuanState luan,String key,Object value) throws LuanException {
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diff changeset
130 if( value instanceof String )
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diff changeset
131 return new Term( key, (String)value );
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diff changeset
132 if( value instanceof Integer )
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diff changeset
133 return term( key, (Integer)value );
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diff changeset
134 if( value instanceof Long )
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diff changeset
135 return term( key, (Long)value );
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diff changeset
136 if( value instanceof Float )
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diff changeset
137 return term( key, NumericUtils.floatToSortableInt((Float)value) );
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diff changeset
138 if( value instanceof Double )
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diff changeset
139 return term( key, NumericUtils.doubleToSortableLong((Double)value) );
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diff changeset
140 throw luan.exception("invalid value type '"+value.getClass().getSimpleName()+"' for key '"+key+"'");
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141 }
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parents: 545
diff changeset
142
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parents: 545
diff changeset
143 public void delete_documents(LuanState luan,LuanTable tblTerms) throws LuanException, IOException {
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
144 List<Term> list = new ArrayList<Term>();
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
145 for( Map.Entry<Object,Object> entry : tblTerms.iterable(luan) ) {
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parents: 545
diff changeset
146 Object key = entry.getKey();
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
147 Object value = entry.getValue();
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
148 if( !(key instanceof String) )
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parents: 545
diff changeset
149 throw luan.exception("key must be a string but got "+key.getClass().getSimpleName());
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parents: 545
diff changeset
150 list.add( term( luan, (String)key, value ) );
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
151 }
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parents: 545
diff changeset
152
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parents: 545
diff changeset
153 boolean commit = !writeLock.isHeldByCurrentThread();
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parents: 545
diff changeset
154 writeLock.lock();
eaef1005ab87 general lucene cleanup
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diff changeset
155 try {
eaef1005ab87 general lucene cleanup
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diff changeset
156 writer.deleteDocuments(list.toArray(new Term[list.size()]));
eaef1005ab87 general lucene cleanup
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diff changeset
157 if(commit) writer.commit();
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parents: 545
diff changeset
158 } finally {
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
159 writeLock.unlock();
eaef1005ab87 general lucene cleanup
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diff changeset
160 }
eaef1005ab87 general lucene cleanup
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diff changeset
161 }
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parents: 545
diff changeset
162
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diff changeset
163 public void save_document(LuanState luan,LuanTable doc) throws LuanException, IOException {
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
164 if( doc.get(luan,"type")==null )
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diff changeset
165 throw luan.exception("missing 'type' field");
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parents: 545
diff changeset
166 Long id = (Long)doc.get(luan,"id");
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parents: 545
diff changeset
167
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diff changeset
168 boolean commit = !writeLock.isHeldByCurrentThread();
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parents: 545
diff changeset
169 writeLock.lock();
eaef1005ab87 general lucene cleanup
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diff changeset
170 try {
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diff changeset
171 if( id == null ) {
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diff changeset
172 id = nextId(luan);
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parents: 545
diff changeset
173 doc.put(luan,"id",id);
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
174 writer.addDocument(toLucene(luan,doc));
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
175 } else {
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parents: 545
diff changeset
176 writer.updateDocument( term("id",id), toLucene(luan,doc) );
eaef1005ab87 general lucene cleanup
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diff changeset
177 }
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diff changeset
178 if(commit) writer.commit();
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diff changeset
179 } finally {
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diff changeset
180 writeLock.unlock();
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diff changeset
181 }
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diff changeset
182 }
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
183
eaef1005ab87 general lucene cleanup
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diff changeset
184 public void update_in_transaction(LuanState luan,LuanFunction fn) throws IOException, LuanException {
eaef1005ab87 general lucene cleanup
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diff changeset
185 boolean commit = !writeLock.isHeldByCurrentThread();
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diff changeset
186 writeLock.lock();
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diff changeset
187 try {
eaef1005ab87 general lucene cleanup
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diff changeset
188 luan.call(fn);
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
189 if(commit) writer.commit();
252
3896138955b1 web testing...
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parents: 233
diff changeset
190 } finally {
3896138955b1 web testing...
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 233
diff changeset
191 writeLock.unlock();
3896138955b1 web testing...
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parents: 233
diff changeset
192 }
3896138955b1 web testing...
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 233
diff changeset
193 }
3896138955b1 web testing...
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 233
diff changeset
194
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
195
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
196 private long id = 0;
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
197 private long idLim = 0;
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
198 private final int idBatch = 10;
4438cb2e04d0 start lucene
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parents:
diff changeset
199
233
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
200 private void initId(LuanState luan) throws LuanException, IOException {
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
201 TopDocs td = searcher.search(new TermQuery(new Term("type","next_id")),1);
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
202 switch(td.totalHits) {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
203 case 0:
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
204 break; // do nothing
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
205 case 1:
544
c5a93767cc5c lucene overhaul, untested
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parents: 527
diff changeset
206 idLim = (Long)searcher.doc(td.scoreDocs[0].doc).getField(FLD_NEXT_ID).numericValue();
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
207 id = idLim;
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
208 break;
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
209 default:
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
210 throw new RuntimeException();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
211 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
212 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
213
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
214 private synchronized long nextId(LuanState luan) throws LuanException, IOException {
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
215 if( ++id > idLim ) {
233
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
216 idLim += idBatch;
411
23b99a5039b5 remove Luan.newTable()
Franklin Schmidt <fschmidt@gmail.com>
parents: 312
diff changeset
217 LuanTable doc = new LuanTable();
427
dae264ad6a7b fix LuanTable.put() to use metatables
Franklin Schmidt <fschmidt@gmail.com>
parents: 426
diff changeset
218 doc.rawPut( "type", "next_id" );
dae264ad6a7b fix LuanTable.put() to use metatables
Franklin Schmidt <fschmidt@gmail.com>
parents: 426
diff changeset
219 doc.rawPut( FLD_NEXT_ID, idLim );
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
220 writer.updateDocument(new Term("type","next_id"),toLucene(luan,doc));
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
221 }
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
222 return id;
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
223 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
224
4438cb2e04d0 start lucene
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parents:
diff changeset
225
233
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
226 public void backup(LuanState luan,String zipFile) throws LuanException, IOException {
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
227 if( !zipFile.endsWith(".zip") )
233
ef39bc4d3f70 basic lucene works
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 232
diff changeset
228 throw luan.exception("file "+zipFile+" doesn't end with '.zip'");
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
229 IndexCommit ic = snapshotDeletionPolicy.snapshot();
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
230 try {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
231 ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
232 for( String fileName : ic.getFileNames() ) {
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
233 out.putNextEntry(new ZipEntry(fileName));
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
234 FileInputStream in = new FileInputStream(new File(indexDir,fileName));
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
235 Utils.copyAll(in,out);
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
236 in.close();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
237 out.closeEntry();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
238 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
239 out.close();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
240 } finally {
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
241 snapshotDeletionPolicy.release(ic);
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
242 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
243 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
244
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
245
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
246
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
247 public String to_string() {
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
248 return writer.getDirectory().toString();
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
249 }
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
250
303
fdb4bd391c28 add lucene close();
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 287
diff changeset
251 public void close() throws IOException {
521
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
252 if( !isClosed ) {
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
253 writer.close();
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
254 reader.close();
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
255 isClosed = true;
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
256 }
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
257 }
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
258
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
259 protected void finalize() throws Throwable {
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
260 if( !isClosed ) {
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
261 logger.error("not closed");
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
262 close();
8a217fe5b4f3 cleaner LuanState.onClose()
Franklin Schmidt <fschmidt@gmail.com>
parents: 427
diff changeset
263 }
8a217fe5b4f3 cleaner LuanState.onClose()
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264 super.finalize();
230
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265 }
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266
312
d34be4588556 add lucene query parsing
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267
544
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268
545
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269 private static class DocFn extends LuanFunction {
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270 final IndexSearcher searcher;
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271 int docID;
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272
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273 DocFn(IndexSearcher searcher) {
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274 this.searcher = searcher;
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275 }
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276
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277 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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278 try {
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279 return toTable(luan,searcher.doc(docID));
545
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280 } catch(IOException e) {
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281 throw luan.exception(e);
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282 }
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283 }
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284 }
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285
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286 private static abstract class MyCollector extends Collector {
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287 int docBase;
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288 int i = 0;
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289
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290 @Override public void setScorer(Scorer scorer) {}
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291 @Override public void setNextReader(AtomicReaderContext context) {
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292 this.docBase = context.docBase;
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293 }
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294 @Override public boolean acceptsDocsOutOfOrder() {
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295 return true;
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296 }
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297 }
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298
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299 private synchronized IndexSearcher openSearcher() throws IOException {
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300 DirectoryReader newReader = DirectoryReader.openIfChanged(reader);
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301 if( newReader != null ) {
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302 reader.decRef();
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303 reader = newReader;
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304 searcher = new IndexSearcher(reader);
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305 }
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306 reader.incRef();
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307 return searcher;
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308 }
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309
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310 // call in finally block
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311 private static void close(IndexSearcher searcher) throws IOException {
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312 searcher.getIndexReader().decRef();
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313 }
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314
545
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315 public int advanced_search( final LuanState luan, String queryStr, LuanFunction fn, Integer n, String sortStr ) throws LuanException, IOException, ParseException {
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316 Utils.checkNotNull(luan,queryStr);
546
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317 Query query = SaneQueryParser.parseQuery(mfp,queryStr);
545
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318 IndexSearcher searcher = threadLocalSearcher.get();
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319 boolean inTransaction = searcher != null;
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320 if( !inTransaction )
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321 searcher = openSearcher();
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322 try {
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323 if( fn!=null && n==null ) {
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324 if( sortStr != null )
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325 throw luan.exception("sort must be nil when n is nil");
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326 final DocFn docFn = new DocFn(searcher);
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327 MyCollector col = new MyCollector() {
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328 @Override public void collect(int doc) {
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329 try {
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330 docFn.docID = doc;
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331 luan.call(fn,new Object[]{++i,docFn});
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332 } catch(LuanException e) {
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333 throw new LuanRuntimeException(e);
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334 }
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335 }
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336 };
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337 try {
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338 searcher.search(query,col);
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339 } catch(LuanRuntimeException e) {
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340 throw (LuanException)e.getCause();
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341 }
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diff changeset
342 return col.i;
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343 }
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344 if( fn==null || n==0 ) {
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345 TotalHitCountCollector thcc = new TotalHitCountCollector();
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346 searcher.search(query,thcc);
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347 return thcc.getTotalHits();
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348 }
546
eaef1005ab87 general lucene cleanup
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diff changeset
349 Sort sort = sortStr==null ? null : SaneQueryParser.parseSort(mfp,sortStr);
545
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diff changeset
350 TopDocs td = sort==null ? searcher.search(query,n) : searcher.search(query,n,sort);
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diff changeset
351 final ScoreDoc[] scoreDocs = td.scoreDocs;
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352 DocFn docFn = new DocFn(searcher);
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353 for( int i=0; i<scoreDocs.length; i++ ) {
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diff changeset
354 docFn.docID = scoreDocs[i].doc;
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diff changeset
355 luan.call(fn,new Object[]{i+1,docFn});
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356 }
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diff changeset
357 return td.totalHits;
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diff changeset
358 } finally {
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diff changeset
359 if( !inTransaction )
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diff changeset
360 close(searcher);
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diff changeset
361 }
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diff changeset
362 }
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diff changeset
363
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diff changeset
364 public Object search_in_transaction(LuanState luan,LuanFunction fn) throws LuanException, IOException {
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diff changeset
365 if( threadLocalSearcher.get() != null )
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diff changeset
366 throw luan.exception("can't nest search_in_transaction calls");
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diff changeset
367 IndexSearcher searcher = openSearcher();
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diff changeset
368 threadLocalSearcher.set(searcher);
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diff changeset
369 try {
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diff changeset
370 return luan.call(fn);
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diff changeset
371 } finally {
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diff changeset
372 threadLocalSearcher.set(null);
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diff changeset
373 close(searcher);
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diff changeset
374 }
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diff changeset
375 }
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diff changeset
376
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diff changeset
377
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diff changeset
378
544
c5a93767cc5c lucene overhaul, untested
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diff changeset
379 public final LuanMeta indexedFieldsMeta = new LuanMeta() {
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diff changeset
380
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diff changeset
381 @Override public boolean canNewindex() {
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diff changeset
382 return true;
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383 }
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diff changeset
384
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diff changeset
385 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) {
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diff changeset
386 return mfp.fields.get(key);
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diff changeset
387 }
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diff changeset
388
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diff changeset
389 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object value) throws LuanException {
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diff changeset
390 if( !(key instanceof String) )
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diff changeset
391 throw luan.exception("key must be string");
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diff changeset
392 String field = (String)key;
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diff changeset
393 if( value==null ) { // delete
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diff changeset
394 mfp.fields.remove(field);
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diff changeset
395 return;
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diff changeset
396 }
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diff changeset
397 if( !(value instanceof FieldParser) )
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diff changeset
398 throw luan.exception("value must be FieldParser like the values of Lucene.type");
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diff changeset
399 FieldParser parser = (FieldParser)value;
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diff changeset
400 mfp.fields.put( field, parser );
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diff changeset
401 }
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diff changeset
402
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diff changeset
403 @Override public final Iterator keys(LuanTable tbl) {
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diff changeset
404 return mfp.fields.keySet().iterator();
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diff changeset
405 }
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diff changeset
406
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diff changeset
407 @Override protected String type(LuanTable tbl) {
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diff changeset
408 return "lucene-indexed-fields";
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diff changeset
409 }
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parents: 527
diff changeset
410
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diff changeset
411 };
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parents: 527
diff changeset
412
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
413
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
414
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
415
eaef1005ab87 general lucene cleanup
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diff changeset
416 private Document toLucene(LuanState luan,LuanTable table) throws LuanException {
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diff changeset
417 Set<String> indexed = mfp.fields.keySet();
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diff changeset
418 Document doc = new Document();
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diff changeset
419 for( Map.Entry<Object,Object> entry : table.iterable(luan) ) {
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diff changeset
420 Object key = entry.getKey();
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diff changeset
421 if( !(key instanceof String) )
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diff changeset
422 throw luan.exception("key must be string");
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diff changeset
423 String name = (String)key;
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diff changeset
424 Object value = entry.getValue();
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diff changeset
425 if( value instanceof String ) {
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diff changeset
426 String s = (String)value;
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parents: 545
diff changeset
427 if( indexed.contains(name) ) {
eaef1005ab87 general lucene cleanup
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diff changeset
428 doc.add(new StringField(name, s, Field.Store.YES));
eaef1005ab87 general lucene cleanup
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diff changeset
429 } else {
eaef1005ab87 general lucene cleanup
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diff changeset
430 doc.add(new StoredField(name, s));
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diff changeset
431 }
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432 } else if( value instanceof Integer ) {
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433 int i = (Integer)value;
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434 if( indexed.contains(name) ) {
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435 doc.add(new IntField(name, i, Field.Store.YES));
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436 } else {
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437 doc.add(new StoredField(name, i));
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438 }
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439 } else if( value instanceof Long ) {
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440 long i = (Long)value;
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441 if( indexed.contains(name) ) {
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442 doc.add(new LongField(name, i, Field.Store.YES));
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443 } else {
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444 doc.add(new StoredField(name, i));
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445 }
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446 } else if( value instanceof Double ) {
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447 double i = (Double)value;
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448 if( indexed.contains(name) ) {
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449 doc.add(new DoubleField(name, i, Field.Store.YES));
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450 } else {
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451 doc.add(new StoredField(name, i));
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452 }
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453 } else if( value instanceof byte[] ) {
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454 byte[] b = (byte[])value;
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455 doc.add(new StoredField(name, b));
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456 } else
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457 throw luan.exception("invalid value type "+value.getClass()+"' for '"+name+"'");
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458 }
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459 return doc;
544
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460 }
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461
546
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462 private static LuanTable toTable(LuanState luan,Document doc) throws LuanException {
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463 if( doc==null )
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464 return null;
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465 LuanTable table = new LuanTable();
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466 for( IndexableField ifld : doc ) {
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467 String name = ifld.name();
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468 BytesRef br = ifld.binaryValue();
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469 if( br != null ) {
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470 table.rawPut(name,br.bytes);
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471 continue;
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472 }
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473 Number n = ifld.numericValue();
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474 if( n != null ) {
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475 table.rawPut(name,n);
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476 continue;
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477 }
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478 String s = ifld.stringValue();
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479 if( s != null ) {
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480 table.rawPut(name,s);
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481 continue;
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482 }
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483 throw luan.exception("invalid field type for "+ifld);
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484 }
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485 return table;
312
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486 }
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parents: 303
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487
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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488 }