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annotate lucene/src/luan/modules/lucene/LuceneIndex.java @ 646:cdc70de628b5

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simplify LuanException
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 29 Mar 2016 19:58:39 -0600
parents 8281a248c47e
children b21d82ee5756
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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.HashSet;
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14 import java.util.Collections;
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15 import java.util.concurrent.locks.Lock;
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16 import java.util.concurrent.locks.ReentrantLock;
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17 import java.util.zip.ZipOutputStream;
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18 import java.util.zip.ZipEntry;
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19 import org.apache.lucene.analysis.Analyzer;
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20 import org.apache.lucene.analysis.core.KeywordAnalyzer;
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21 import org.apache.lucene.document.Document;
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22 import org.apache.lucene.document.Field;
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23 import org.apache.lucene.document.StoredField;
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24 import org.apache.lucene.document.StringField;
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25 import org.apache.lucene.document.TextField;
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26 import org.apache.lucene.document.IntField;
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27 import org.apache.lucene.document.LongField;
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28 import org.apache.lucene.document.DoubleField;
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29 import org.apache.lucene.index.IndexableField;
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30 import org.apache.lucene.index.IndexWriter;
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31 import org.apache.lucene.index.IndexWriterConfig;
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32 import org.apache.lucene.index.DirectoryReader;
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33 import org.apache.lucene.index.Term;
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34 import org.apache.lucene.index.SnapshotDeletionPolicy;
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35 import org.apache.lucene.index.IndexCommit;
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36 import org.apache.lucene.index.AtomicReaderContext;
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37 import org.apache.lucene.store.Directory;
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38 import org.apache.lucene.store.FSDirectory;
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39 import org.apache.lucene.util.Version;
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40 import org.apache.lucene.util.BytesRef;
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41 import org.apache.lucene.util.NumericUtils;
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42 import org.apache.lucene.search.Query;
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43 import org.apache.lucene.search.TermQuery;
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44 import org.apache.lucene.search.TopDocs;
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45 import org.apache.lucene.search.Sort;
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46 import org.apache.lucene.search.SortField;
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47 import org.apache.lucene.search.IndexSearcher;
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48 import org.apache.lucene.search.TotalHitCountCollector;
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49 import org.apache.lucene.search.ScoreDoc;
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50 import org.apache.lucene.search.Collector;
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51 import org.apache.lucene.search.Scorer;
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52 import org.apache.lucene.search.BooleanClause;
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53 import org.apache.lucene.search.highlight.Formatter;
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54 import org.apache.lucene.search.highlight.Highlighter;
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55 import org.apache.lucene.search.highlight.InvalidTokenOffsetsException;
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56 import org.apache.lucene.search.highlight.NullFragmenter;
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57 import org.apache.lucene.search.highlight.QueryScorer;
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58 import org.apache.lucene.search.highlight.TokenGroup;
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59 import sane.lucene.queryparser.SaneQueryParser;
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60 import sane.lucene.queryparser.FieldParser;
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61 import sane.lucene.queryparser.MultiFieldParser;
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62 import sane.lucene.queryparser.StringFieldParser;
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63 import sane.lucene.queryparser.NumberFieldParser;
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64 import sane.lucene.queryparser.ParseException;
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65 import luan.modules.Utils;
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66 import luan.Luan;
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67 import luan.LuanState;
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68 import luan.LuanTable;
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69 import luan.LuanFunction;
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70 import luan.LuanJavaFunction;
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71 import luan.LuanException;
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72 import luan.LuanMeta;
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73 import luan.LuanRuntimeException;
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74 import org.slf4j.Logger;
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75 import org.slf4j.LoggerFactory;
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76
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77
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78 public final class LuceneIndex implements Closeable {
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79 private static final Logger logger = LoggerFactory.getLogger(LuceneIndex.class);
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80
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81 private static final String FLD_NEXT_ID = "nextId";
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82 public static final StringFieldParser STRING_FIELD_PARSER = new StringFieldParser(new KeywordAnalyzer());
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83
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84 private final ReentrantLock writeLock = new ReentrantLock();
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85 private final File indexDir;
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86 final SnapshotDeletionPolicy snapshotDeletionPolicy;
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87 private final IndexWriter writer;
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88 private DirectoryReader reader;
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89 private IndexSearcher searcher;
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90 private final ThreadLocal<IndexSearcher> threadLocalSearcher = new ThreadLocal<IndexSearcher>();
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91 private boolean isClosed = false;
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92 private final MultiFieldParser mfp;
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93 public final LuanTable indexed_only_fields = new LuanTable();
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94 private final Analyzer analyzer;
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95
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96 public LuceneIndex(LuanState luan,String indexDirStr,FieldParser defaultFieldParser,String[] defaultFields) throws LuanException, IOException {
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97 mfp = defaultFieldParser==null ? new MultiFieldParser() : new MultiFieldParser(defaultFieldParser,defaultFields);
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98 mfp.fields.put( "type", STRING_FIELD_PARSER );
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99 mfp.fields.put( "id", NumberFieldParser.LONG );
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100 File indexDir = new File(indexDirStr);
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101 this.indexDir = indexDir;
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102 Directory dir = FSDirectory.open(indexDir);
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103 Version version = Version.LUCENE_4_9;
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104 Analyzer analyzer = STRING_FIELD_PARSER.analyzer;
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105 if( defaultFieldParser instanceof StringFieldParser ) {
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106 StringFieldParser sfp = (StringFieldParser)defaultFieldParser;
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107 analyzer = sfp.analyzer;
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108 }
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109 this.analyzer = analyzer;
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110 IndexWriterConfig conf = new IndexWriterConfig(version,analyzer);
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111 snapshotDeletionPolicy = new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy());
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112 conf.setIndexDeletionPolicy(snapshotDeletionPolicy);
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113 writer = new IndexWriter(dir,conf);
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114 writer.commit(); // commit index creation
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115 reader = DirectoryReader.open(dir);
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116 luan.onClose(this);
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117 searcher = new IndexSearcher(reader);
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118 initId();
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119 }
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diff changeset
123 public void delete_all() throws IOException {
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124 boolean commit = !writeLock.isHeldByCurrentThread();
252
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125 writeLock.lock();
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126 try {
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127 writer.deleteAll();
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128 id = idLim = 0;
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129 if(commit) writer.commit();
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130 } finally {
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131 writeLock.unlock();
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132 }
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133 }
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134
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135 private static Term term(String key,long value) {
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diff changeset
136 BytesRef br = new BytesRef();
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137 NumericUtils.longToPrefixCoded(value,0,br);
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138 return new Term(key,br);
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139 }
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140
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diff changeset
141 public void delete(LuanState luan,String queryStr) throws LuanException, IOException, ParseException {
622
1a53333eb4d5 remove Lucene all_search_terms_must_match() since now query suffix "~a" handles this
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142 Query query = SaneQueryParser.parseQuery(mfp,queryStr);
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143
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144 boolean commit = !writeLock.isHeldByCurrentThread();
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diff changeset
145 writeLock.lock();
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diff changeset
146 try {
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147 writer.deleteDocuments(query);
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148 if(commit) writer.commit();
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149 } finally {
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150 writeLock.unlock();
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151 }
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152 }
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153
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154 public void save(LuanState luan,LuanTable doc) throws LuanException, IOException {
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155 Set indexedOnlySet = new HashSet();
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156 Object typeObj = doc.get(luan,"type");
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157 if( typeObj==null )
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158 throw new LuanException("missing 'type' field");
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159 if( !(typeObj instanceof String) )
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160 throw new LuanException("type must be string");
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161 String type = (String)typeObj;
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162 Object indexedOnlyObj = indexed_only_fields.get(luan,type);
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diff changeset
163 if( indexedOnlyObj != null ) {
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164 if( !(indexedOnlyObj instanceof LuanTable) )
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165 throw new LuanException("indexed_only_fields elements must be tables");
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166 LuanTable indexedOnly = (LuanTable)indexedOnlyObj;
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parents: 617
diff changeset
167 for( Map.Entry<Object,Object> entry : indexedOnly.iterable(luan) ) {
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168 Object key = entry.getKey();
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169 if( !(key instanceof String) )
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170 throw new LuanException("indexed_only_fields."+type+" entries must be strings");
618
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diff changeset
171 String name = (String)key;
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172 Object value = entry.getValue();
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parents: 617
diff changeset
173 if( !(value instanceof LuanFunction) )
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174 throw new LuanException("indexed_only_fields."+type+" values must be functions");
618
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175 LuanFunction fn = (LuanFunction)value;
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diff changeset
176 value = Luan.first(fn.call(luan,new Object[]{doc}));
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diff changeset
177 doc.put(luan, name, value );
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178 indexedOnlySet.add(name);
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179 }
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180 }
601
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181 Object obj = doc.get(luan,"id");
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parents: 599
diff changeset
182 Long id;
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diff changeset
183 try {
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184 id = (Long)obj;
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diff changeset
185 } catch(ClassCastException e) {
646
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diff changeset
186 throw new LuanException("id should be Long but is "+obj.getClass().getSimpleName());
601
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diff changeset
187 }
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188
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189 boolean commit = !writeLock.isHeldByCurrentThread();
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diff changeset
190 writeLock.lock();
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diff changeset
191 try {
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192 if( id == null ) {
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diff changeset
193 id = nextId(luan);
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7c3ad6db8ac3 make LuanState.JAVA private
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diff changeset
194 doc.put(luan,"id",id);
618
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diff changeset
195 writer.addDocument(toLucene(luan,doc,indexedOnlySet));
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196 } else {
618
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diff changeset
197 writer.updateDocument( term("id",id), toLucene(luan,doc,indexedOnlySet) );
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198 }
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199 if(commit) writer.commit();
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200 } finally {
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diff changeset
201 writeLock.unlock();
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diff changeset
202 }
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diff changeset
203 }
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diff changeset
204
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diff changeset
205 public void update_in_transaction(LuanState luan,LuanFunction fn) throws IOException, LuanException {
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diff changeset
206 boolean commit = !writeLock.isHeldByCurrentThread();
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diff changeset
207 writeLock.lock();
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diff changeset
208 try {
574
6cc2f047019b remove LuanState.call()
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diff changeset
209 fn.call(luan);
546
eaef1005ab87 general lucene cleanup
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diff changeset
210 if(commit) writer.commit();
252
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parents: 233
diff changeset
211 } finally {
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parents: 233
diff changeset
212 writeLock.unlock();
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parents: 233
diff changeset
213 }
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parents: 233
diff changeset
214 }
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parents: 233
diff changeset
215
230
4438cb2e04d0 start lucene
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parents:
diff changeset
216
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parents:
diff changeset
217 private long id = 0;
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parents:
diff changeset
218 private long idLim = 0;
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parents:
diff changeset
219 private final int idBatch = 10;
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diff changeset
220
646
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diff changeset
221 private void initId() throws LuanException, IOException {
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c5a93767cc5c lucene overhaul, untested
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diff changeset
222 TopDocs td = searcher.search(new TermQuery(new Term("type","next_id")),1);
618
5e495e4e560b add lucene indexed_only_fields
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diff changeset
223 /*
547
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diff changeset
224 // tmp hack
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parents: 546
diff changeset
225 if( td.totalHits == 0 ) {
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diff changeset
226 td = searcher.search(new TermQuery(new Term("type index","next_id")),1);
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parents: 546
diff changeset
227 if( td.totalHits == 1 ) {
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parents: 546
diff changeset
228 long idLim = (Long)searcher.doc(td.scoreDocs[0].doc).getField(FLD_NEXT_ID).numericValue();
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diff changeset
229 LuanTable doc = new LuanTable();
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diff changeset
230 doc.rawPut( "type", "next_id" );
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diff changeset
231 doc.rawPut( FLD_NEXT_ID, idLim );
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parents: 546
diff changeset
232 writer.addDocument(toLucene(luan,doc));
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parents: 546
diff changeset
233 writer.commit();
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parents: 546
diff changeset
234 }
0be287ab0309 add lucene/Versioning and simplify Lucene fn names
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parents: 546
diff changeset
235 }
618
5e495e4e560b add lucene indexed_only_fields
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diff changeset
236 */
230
4438cb2e04d0 start lucene
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parents:
diff changeset
237 switch(td.totalHits) {
4438cb2e04d0 start lucene
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parents:
diff changeset
238 case 0:
4438cb2e04d0 start lucene
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parents:
diff changeset
239 break; // do nothing
4438cb2e04d0 start lucene
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parents:
diff changeset
240 case 1:
544
c5a93767cc5c lucene overhaul, untested
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diff changeset
241 idLim = (Long)searcher.doc(td.scoreDocs[0].doc).getField(FLD_NEXT_ID).numericValue();
230
4438cb2e04d0 start lucene
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parents:
diff changeset
242 id = idLim;
4438cb2e04d0 start lucene
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parents:
diff changeset
243 break;
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parents:
diff changeset
244 default:
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245 throw new RuntimeException();
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246 }
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diff changeset
247 }
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parents:
diff changeset
248
617
e54c1646eed0 add Lucene.next_id()
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parents: 601
diff changeset
249 public synchronized long nextId(LuanState luan) throws LuanException, IOException {
544
c5a93767cc5c lucene overhaul, untested
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diff changeset
250 if( ++id > idLim ) {
233
ef39bc4d3f70 basic lucene works
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parents: 232
diff changeset
251 idLim += idBatch;
411
23b99a5039b5 remove Luan.newTable()
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parents: 312
diff changeset
252 LuanTable doc = new LuanTable();
427
dae264ad6a7b fix LuanTable.put() to use metatables
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parents: 426
diff changeset
253 doc.rawPut( "type", "next_id" );
dae264ad6a7b fix LuanTable.put() to use metatables
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parents: 426
diff changeset
254 doc.rawPut( FLD_NEXT_ID, idLim );
618
5e495e4e560b add lucene indexed_only_fields
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diff changeset
255 writer.updateDocument(new Term("type","next_id"),toLucene(luan,doc,Collections.EMPTY_SET));
230
4438cb2e04d0 start lucene
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256 }
544
c5a93767cc5c lucene overhaul, untested
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diff changeset
257 return id;
230
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parents:
diff changeset
258 }
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parents:
diff changeset
259
4438cb2e04d0 start lucene
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parents:
diff changeset
260
646
cdc70de628b5 simplify LuanException
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parents: 624
diff changeset
261 public void backup(String zipFile) throws LuanException, IOException {
230
4438cb2e04d0 start lucene
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parents:
diff changeset
262 if( !zipFile.endsWith(".zip") )
646
cdc70de628b5 simplify LuanException
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parents: 624
diff changeset
263 throw new LuanException("file "+zipFile+" doesn't end with '.zip'");
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
264 IndexCommit ic = snapshotDeletionPolicy.snapshot();
230
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265 try {
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266 ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
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267 for( String fileName : ic.getFileNames() ) {
230
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268 out.putNextEntry(new ZipEntry(fileName));
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269 FileInputStream in = new FileInputStream(new File(indexDir,fileName));
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270 Utils.copyAll(in,out);
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271 in.close();
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272 out.closeEntry();
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273 }
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274 out.close();
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275 } finally {
546
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diff changeset
276 snapshotDeletionPolicy.release(ic);
230
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277 }
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278 }
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279
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280
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281
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282 public String to_string() {
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283 return writer.getDirectory().toString();
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284 }
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285
303
fdb4bd391c28 add lucene close();
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diff changeset
286 public void close() throws IOException {
521
8a217fe5b4f3 cleaner LuanState.onClose()
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diff changeset
287 if( !isClosed ) {
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288 writer.close();
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289 reader.close();
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290 isClosed = true;
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291 }
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292 }
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293
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294 protected void finalize() throws Throwable {
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295 if( !isClosed ) {
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296 logger.error("not closed");
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297 close();
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298 }
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diff changeset
299 super.finalize();
230
4438cb2e04d0 start lucene
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300 }
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301
312
d34be4588556 add lucene query parsing
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diff changeset
302
544
c5a93767cc5c lucene overhaul, untested
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303
545
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304 private static class DocFn extends LuanFunction {
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305 final IndexSearcher searcher;
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diff changeset
306 int docID;
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diff changeset
307
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diff changeset
308 DocFn(IndexSearcher searcher) {
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diff changeset
309 this.searcher = searcher;
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310 }
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311
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diff changeset
312 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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diff changeset
313 try {
646
cdc70de628b5 simplify LuanException
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parents: 624
diff changeset
314 return toTable(searcher.doc(docID));
545
ddcd4296107a clean up lucene search
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diff changeset
315 } catch(IOException e) {
646
cdc70de628b5 simplify LuanException
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diff changeset
316 throw new LuanException(e);
545
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diff changeset
317 }
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diff changeset
318 }
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diff changeset
319 }
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diff changeset
320
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diff changeset
321 private static abstract class MyCollector extends Collector {
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diff changeset
322 int docBase;
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diff changeset
323 int i = 0;
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diff changeset
324
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diff changeset
325 @Override public void setScorer(Scorer scorer) {}
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diff changeset
326 @Override public void setNextReader(AtomicReaderContext context) {
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diff changeset
327 this.docBase = context.docBase;
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diff changeset
328 }
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diff changeset
329 @Override public boolean acceptsDocsOutOfOrder() {
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diff changeset
330 return true;
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331 }
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332 }
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diff changeset
333
546
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diff changeset
334 private synchronized IndexSearcher openSearcher() throws IOException {
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diff changeset
335 DirectoryReader newReader = DirectoryReader.openIfChanged(reader);
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parents: 545
diff changeset
336 if( newReader != null ) {
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diff changeset
337 reader.decRef();
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diff changeset
338 reader = newReader;
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diff changeset
339 searcher = new IndexSearcher(reader);
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diff changeset
340 }
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diff changeset
341 reader.incRef();
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diff changeset
342 return searcher;
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diff changeset
343 }
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diff changeset
344
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diff changeset
345 // call in finally block
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diff changeset
346 private static void close(IndexSearcher searcher) throws IOException {
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diff changeset
347 searcher.getIndexReader().decRef();
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diff changeset
348 }
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diff changeset
349
591
790d5de23042 add "strict" param to Io.repr();
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parents: 578
diff changeset
350 public void ensure_open() throws IOException {
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parents: 578
diff changeset
351 close(openSearcher());
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diff changeset
352 }
790d5de23042 add "strict" param to Io.repr();
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parents: 578
diff changeset
353
545
ddcd4296107a clean up lucene search
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diff changeset
354 public int advanced_search( final LuanState luan, String queryStr, LuanFunction fn, Integer n, String sortStr ) throws LuanException, IOException, ParseException {
646
cdc70de628b5 simplify LuanException
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parents: 624
diff changeset
355 Utils.checkNotNull(queryStr);
622
1a53333eb4d5 remove Lucene all_search_terms_must_match() since now query suffix "~a" handles this
Franklin Schmidt <fschmidt@gmail.com>
parents: 621
diff changeset
356 Query query = SaneQueryParser.parseQuery(mfp,queryStr);
545
ddcd4296107a clean up lucene search
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diff changeset
357 IndexSearcher searcher = threadLocalSearcher.get();
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diff changeset
358 boolean inTransaction = searcher != null;
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diff changeset
359 if( !inTransaction )
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diff changeset
360 searcher = openSearcher();
ddcd4296107a clean up lucene search
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diff changeset
361 try {
ddcd4296107a clean up lucene search
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diff changeset
362 if( fn!=null && n==null ) {
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parents: 544
diff changeset
363 if( sortStr != null )
646
cdc70de628b5 simplify LuanException
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parents: 624
diff changeset
364 throw new LuanException("sort must be nil when n is nil");
545
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
365 final DocFn docFn = new DocFn(searcher);
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parents: 544
diff changeset
366 MyCollector col = new MyCollector() {
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parents: 544
diff changeset
367 @Override public void collect(int doc) {
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parents: 544
diff changeset
368 try {
547
0be287ab0309 add lucene/Versioning and simplify Lucene fn names
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parents: 546
diff changeset
369 docFn.docID = docBase + doc;
574
6cc2f047019b remove LuanState.call()
Franklin Schmidt <fschmidt@gmail.com>
parents: 572
diff changeset
370 fn.call(luan,new Object[]{++i,docFn});
545
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
371 } catch(LuanException e) {
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parents: 544
diff changeset
372 throw new LuanRuntimeException(e);
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parents: 544
diff changeset
373 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
374 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
375 };
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
376 try {
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parents: 544
diff changeset
377 searcher.search(query,col);
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parents: 544
diff changeset
378 } catch(LuanRuntimeException e) {
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parents: 544
diff changeset
379 throw (LuanException)e.getCause();
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parents: 544
diff changeset
380 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
381 return col.i;
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diff changeset
382 }
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parents: 544
diff changeset
383 if( fn==null || n==0 ) {
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parents: 544
diff changeset
384 TotalHitCountCollector thcc = new TotalHitCountCollector();
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parents: 544
diff changeset
385 searcher.search(query,thcc);
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parents: 544
diff changeset
386 return thcc.getTotalHits();
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parents: 544
diff changeset
387 }
546
eaef1005ab87 general lucene cleanup
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parents: 545
diff changeset
388 Sort sort = sortStr==null ? null : SaneQueryParser.parseSort(mfp,sortStr);
545
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
389 TopDocs td = sort==null ? searcher.search(query,n) : searcher.search(query,n,sort);
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parents: 544
diff changeset
390 final ScoreDoc[] scoreDocs = td.scoreDocs;
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parents: 544
diff changeset
391 DocFn docFn = new DocFn(searcher);
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parents: 544
diff changeset
392 for( int i=0; i<scoreDocs.length; i++ ) {
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parents: 544
diff changeset
393 docFn.docID = scoreDocs[i].doc;
574
6cc2f047019b remove LuanState.call()
Franklin Schmidt <fschmidt@gmail.com>
parents: 572
diff changeset
394 fn.call(luan,new Object[]{i+1,docFn});
545
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
395 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
396 return td.totalHits;
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
397 } finally {
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
398 if( !inTransaction )
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parents: 544
diff changeset
399 close(searcher);
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parents: 544
diff changeset
400 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
401 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
402
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
403 public Object search_in_transaction(LuanState luan,LuanFunction fn) throws LuanException, IOException {
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
404 if( threadLocalSearcher.get() != null )
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
405 throw new LuanException("can't nest search_in_transaction calls");
545
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
406 IndexSearcher searcher = openSearcher();
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
407 threadLocalSearcher.set(searcher);
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
408 try {
574
6cc2f047019b remove LuanState.call()
Franklin Schmidt <fschmidt@gmail.com>
parents: 572
diff changeset
409 return fn.call(luan);
545
ddcd4296107a clean up lucene search
Franklin Schmidt <fschmidt@gmail.com>
parents: 544
diff changeset
410 } finally {
ddcd4296107a clean up lucene search
Franklin Schmidt <fschmidt@gmail.com>
parents: 544
diff changeset
411 threadLocalSearcher.set(null);
ddcd4296107a clean up lucene search
Franklin Schmidt <fschmidt@gmail.com>
parents: 544
diff changeset
412 close(searcher);
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
413 }
ddcd4296107a clean up lucene search
Franklin Schmidt <fschmidt@gmail.com>
parents: 544
diff changeset
414 }
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
415
ddcd4296107a clean up lucene search
Franklin Schmidt <fschmidt@gmail.com>
parents: 544
diff changeset
416
ddcd4296107a clean up lucene search
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parents: 544
diff changeset
417
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
418 public final LuanMeta indexedFieldsMeta = new LuanMeta() {
c5a93767cc5c lucene overhaul, untested
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parents: 527
diff changeset
419
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
420 @Override public boolean canNewindex() {
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
421 return true;
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
422 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
423
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
424 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) {
c5a93767cc5c lucene overhaul, untested
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parents: 527
diff changeset
425 return mfp.fields.get(key);
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
426 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
427
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
428 @Override public void __new_index(LuanState luan,LuanTable tbl,Object key,Object value) throws LuanException {
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
429 if( !(key instanceof String) )
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
430 throw new LuanException("key must be string");
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
431 String field = (String)key;
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
432 if( value==null ) { // delete
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
433 mfp.fields.remove(field);
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
434 return;
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
435 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
436 if( !(value instanceof FieldParser) )
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
437 throw new LuanException("value must be FieldParser like the values of Lucene.type");
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
438 FieldParser parser = (FieldParser)value;
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
439 mfp.fields.put( field, parser );
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
440 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
441
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
442 @Override public final Iterator keys(LuanTable tbl) {
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
443 return mfp.fields.keySet().iterator();
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
444 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
445
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
446 @Override protected String type(LuanTable tbl) {
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
447 return "lucene-indexed-fields";
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
448 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
449
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
450 };
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
451
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
452
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
453
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
454 private IndexableField newField(String name,Object value,Field.Store store,Set<String> indexed)
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
455 throws LuanException
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
456 {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
457 if( value instanceof String ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
458 String s = (String)value;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
459 FieldParser fp = mfp.fields.get(name);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
460 if( fp != null ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
461 if( fp instanceof StringFieldParser && fp != STRING_FIELD_PARSER ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
462 return new TextField(name, s, store);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
463 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
464 return new StringField(name, s, store);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
465 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
466 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
467 return new StoredField(name, s);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
468 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
469 } else if( value instanceof Integer ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
470 int i = (Integer)value;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
471 if( indexed.contains(name) ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
472 return new IntField(name, i, store);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
473 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
474 return new StoredField(name, i);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
475 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
476 } else if( value instanceof Long ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
477 long i = (Long)value;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
478 if( indexed.contains(name) ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
479 return new LongField(name, i, store);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
480 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
481 return new StoredField(name, i);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
482 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
483 } else if( value instanceof Double ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
484 double i = (Double)value;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
485 if( indexed.contains(name) ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
486 return new DoubleField(name, i, store);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
487 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
488 return new StoredField(name, i);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
489 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
490 } else if( value instanceof byte[] ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
491 byte[] b = (byte[])value;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
492 return new StoredField(name, b);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
493 } else
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
494 throw new LuanException("invalid value type "+value.getClass()+"' for '"+name+"'");
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
495 }
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
496
618
5e495e4e560b add lucene indexed_only_fields
Franklin Schmidt <fschmidt@gmail.com>
parents: 617
diff changeset
497 private Document toLucene(LuanState luan,LuanTable table,Set indexOnly) throws LuanException {
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
498 Set<String> indexed = mfp.fields.keySet();
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
499 Document doc = new Document();
575
7c3ad6db8ac3 make LuanState.JAVA private
Franklin Schmidt <fschmidt@gmail.com>
parents: 574
diff changeset
500 for( Map.Entry<Object,Object> entry : table.iterable(luan) ) {
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
501 Object key = entry.getKey();
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
502 if( !(key instanceof String) )
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
503 throw new LuanException("key must be string");
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
504 String name = (String)key;
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
505 Object value = entry.getValue();
618
5e495e4e560b add lucene indexed_only_fields
Franklin Schmidt <fschmidt@gmail.com>
parents: 617
diff changeset
506 Field.Store store = indexOnly.contains(name) ? Field.Store.NO : Field.Store.YES;
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
507 if( !(value instanceof LuanTable) ) {
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
508 doc.add(newField(name, value, store, indexed));
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
509 } else { // list
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
510 LuanTable list = (LuanTable)value;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
511 for( Object el : list.asList() ) {
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
512 doc.add(newField(name, el, store, indexed));
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
513 }
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
514 }
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
515 }
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
516 return doc;
544
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
517 }
c5a93767cc5c lucene overhaul, untested
Franklin Schmidt <fschmidt@gmail.com>
parents: 527
diff changeset
518
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
519 private static Object getValue(IndexableField ifld) throws LuanException {
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
520 BytesRef br = ifld.binaryValue();
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
521 if( br != null )
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
522 return br.bytes;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
523 Number n = ifld.numericValue();
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
524 if( n != null )
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
525 return n;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
526 String s = ifld.stringValue();
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
527 if( s != null )
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
528 return s;
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
529 throw new LuanException("invalid field type for "+ifld);
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
530 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
531
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
532 private static LuanTable toTable(Document doc) throws LuanException {
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
533 if( doc==null )
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
534 return null;
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
535 LuanTable table = new LuanTable();
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
536 for( IndexableField ifld : doc ) {
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
537 String name = ifld.name();
646
cdc70de628b5 simplify LuanException
Franklin Schmidt <fschmidt@gmail.com>
parents: 624
diff changeset
538 Object value = getValue(ifld);
621
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
539 Object old = table.rawGet(name);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
540 if( old == null ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
541 table.rawPut(name,value);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
542 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
543 LuanTable list;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
544 if( old instanceof LuanTable ) {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
545 list = (LuanTable)old;
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
546 } else {
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
547 list = new LuanTable();
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
548 list.rawPut(1,old);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
549 table.rawPut(name,list);
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
550 }
fd15da41afca allow list of values to be stored in lucene
Franklin Schmidt <fschmidt@gmail.com>
parents: 620
diff changeset
551 list.rawPut(list.rawLength()+1,value);
546
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
552 }
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
553 }
eaef1005ab87 general lucene cleanup
Franklin Schmidt <fschmidt@gmail.com>
parents: 545
diff changeset
554 return table;
312
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 303
diff changeset
555 }
d34be4588556 add lucene query parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 303
diff changeset
556
624
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
557
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
558 public LuanFunction highlighter(LuanState luan,String queryStr,LuanFunction formatter) throws ParseException {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
559 Query query = SaneQueryParser.parseQuery(mfp,queryStr);
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
560 Formatter fmt = new Formatter() {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
561 public String highlightTerm(String originalText,TokenGroup tokenGroup) {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
562 if( tokenGroup.getTotalScore() <= 0 )
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
563 return originalText;
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
564 try {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
565 return (String)Luan.first(formatter.call(luan,new Object[]{originalText}));
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
566 } catch(LuanException e) {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
567 throw new LuanRuntimeException(e);
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
568 }
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
569 }
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
570 };
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
571 Highlighter hl = new Highlighter( fmt, new QueryScorer(query) );
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
572 hl.setTextFragmenter( new NullFragmenter() );
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
573 return new LuanFunction() {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
574 @Override public String call(LuanState luan,Object[] args) throws LuanException {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
575 String text = (String)args[0];
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
576 try {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
577 String s = hl.getBestFragment(analyzer,null,text);
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
578 return s!=null ? s : text;
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
579 } catch(LuanRuntimeException e) {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
580 throw (LuanException)e.getCause();
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
581 } catch(IOException e) {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
582 throw new RuntimeException(e);
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
583 } catch(InvalidTokenOffsetsException e) {
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
584 throw new RuntimeException(e);
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
585 }
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
586 }
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
587 };
8281a248c47e add lucene highlighter
Franklin Schmidt <fschmidt@gmail.com>
parents: 622
diff changeset
588 }
230
4438cb2e04d0 start lucene
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
589 }