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annotate src/goodjava/lucene/api/LuceneIndexWriter.java @ 1529:e6d808f40bbc
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author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Mon, 27 Jul 2020 12:54:31 -0600 |
parents | 3bd4d7963456 |
children | c27dc6af87ca |
rev | line source |
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1460 | 1 package goodjava.lucene.api; |
2 | |
3 import java.io.IOException; | |
4 import java.util.Map; | |
5 import java.util.HashMap; | |
6 import java.util.List; | |
7 import org.apache.lucene.analysis.Analyzer; | |
8 import org.apache.lucene.document.Document; | |
9 import org.apache.lucene.document.Field; | |
10 import org.apache.lucene.document.StoredField; | |
11 import org.apache.lucene.document.StringField; | |
12 import org.apache.lucene.document.TextField; | |
13 import org.apache.lucene.document.IntField; | |
14 import org.apache.lucene.document.LongField; | |
15 import org.apache.lucene.document.DoubleField; | |
16 import org.apache.lucene.document.FloatField; | |
17 import org.apache.lucene.index.IndexWriter; | |
18 import org.apache.lucene.index.IndexWriterConfig; | |
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19 import org.apache.lucene.index.LiveIndexWriterConfig; |
1460 | 20 import org.apache.lucene.index.Term; |
21 import org.apache.lucene.index.DirectoryReader; | |
22 import org.apache.lucene.index.IndexReader; | |
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23 import org.apache.lucene.index.CheckIndex; |
1460 | 24 import org.apache.lucene.search.Query; |
25 import org.apache.lucene.search.IndexSearcher; | |
26 import org.apache.lucene.store.Directory; | |
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27 import goodjava.logging.Logger; |
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28 import goodjava.logging.LoggerFactory; |
1460 | 29 |
30 | |
31 public final class LuceneIndexWriter implements GoodIndexWriter { | |
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32 private static final Logger logger = LoggerFactory.getLogger(LuceneIndexWriter.class); |
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33 private final FieldAnalyzer fieldAnalyzer; |
1465 | 34 public final IndexWriter luceneWriter; |
1460 | 35 public final GoodIndexWriterConfig goodConfig; |
36 private final Map<String,Boolean> indexedMap = new HashMap<String,Boolean>(); | |
37 | |
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38 public LuceneIndexWriter(Directory dir,GoodIndexWriterConfig goodConfig) throws IOException { |
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39 IndexWriterConfig luceneConfig = goodConfig.newLuceneConfig(); |
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40 Analyzer analyzer = luceneConfig.getAnalyzer(); |
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41 if( !(analyzer instanceof FieldAnalyzer) ) |
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42 throw new RuntimeException("analyzer must be FieldAnalyzer"); |
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43 this.fieldAnalyzer = (FieldAnalyzer)analyzer; |
1465 | 44 this.luceneWriter = new IndexWriter(dir,luceneConfig); |
1460 | 45 this.goodConfig = goodConfig; |
1465 | 46 luceneWriter.commit(); // commit index creation |
1460 | 47 } |
48 | |
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49 public Directory getDirectory() { |
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50 return luceneWriter.getDirectory(); |
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51 } |
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52 |
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53 public LiveIndexWriterConfig getLuceneConfig() { |
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54 return luceneWriter.getConfig(); |
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55 } |
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56 |
1460 | 57 public void close() throws IOException { |
58 luceneWriter.close(); | |
59 } | |
60 | |
61 public void commit() throws IOException { | |
62 luceneWriter.commit(); | |
63 } | |
64 | |
65 public void rollback() throws IOException { | |
66 luceneWriter.rollback(); | |
67 } | |
68 | |
69 public void deleteAll() throws IOException { | |
70 luceneWriter.deleteAll(); | |
71 } | |
72 | |
73 public void deleteDocuments(Query query) throws IOException { | |
74 luceneWriter.deleteDocuments(query); | |
75 } | |
76 | |
77 public void addDocument(Map<String,Object> storedFields) throws IOException { | |
78 Document doc = newDocument(storedFields); | |
79 luceneWriter.addDocument(doc); | |
80 } | |
81 | |
82 public void updateDocument(String keyFieldName,Map<String,Object> storedFields) throws IOException { | |
83 if( !isIndexed(keyFieldName) ) | |
84 throw new RuntimeException("can't update using unindexed field "+keyFieldName); | |
85 if( fieldAnalyzer.isAdded(keyFieldName) ) | |
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86 throw new RuntimeException("can't update using analyzed field "+keyFieldName); |
1460 | 87 Document doc = newDocument(storedFields); |
88 Object keyValue = storedFields.get(keyFieldName); | |
89 if( keyValue==null ) | |
90 throw new RuntimeException("no value for field "+keyFieldName); | |
91 Term term = LuceneUtils.term(keyFieldName,keyValue); | |
92 luceneWriter.updateDocument(term,doc); | |
93 } | |
94 | |
95 private Document newDocument(Map<String,Object> storedFields) { | |
96 Document doc = new Document(); | |
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97 MoreFieldInfo more = goodConfig.getMoreFieldInfo(storedFields); |
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98 addFields(doc,storedFields,Field.Store.YES,more.boosts); |
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99 addFields(doc,more.unstoredFields,Field.Store.NO,more.boosts); |
1460 | 100 return doc; |
101 } | |
102 | |
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103 private void addFields( Document doc, Map<String,Object> fields, Field.Store store, Map<String,Float> boosts ) { |
1460 | 104 for( Map.Entry<String,Object> entry : fields.entrySet() ) { |
105 String name = entry.getKey(); | |
106 Object value = entry.getValue(); | |
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107 Float boost = boosts.get(name); |
1460 | 108 if( value instanceof List ) { |
109 for( Object v : (List)value ) { | |
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110 doc.add( newField(name,v,store,boost) ); |
1460 | 111 } |
112 } else { | |
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113 doc.add( newField(name,value,store,boost) ); |
1460 | 114 } |
115 } | |
116 } | |
117 | |
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118 private Field newField( String name, Object value, Field.Store store, Float boost ) { |
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119 Field field = newField(name,value,store); |
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120 if( boost != null ) |
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121 field.setBoost(boost); |
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122 return field; |
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123 } |
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124 |
1460 | 125 private Field newField( String name, Object value, Field.Store store ) { |
126 boolean isIndexed = isIndexed(name); | |
127 if( store==Field.Store.NO && !isIndexed ) | |
128 throw new RuntimeException("field '"+name+"' is unstored and unindexed"); | |
129 if( value instanceof String ) { | |
130 String s = (String)value; | |
131 if( !isIndexed ) { | |
132 return new StoredField(name,s); | |
133 } else if( !fieldAnalyzer.isAdded(name) ) { | |
134 return new StringField(name,s,store); | |
135 } else { | |
136 return new TextField(name,s,store); | |
137 } | |
138 } else if( value instanceof Integer ) { | |
139 int i = (Integer)value; | |
140 if( !isIndexed ) { | |
141 return new StoredField(name,i); | |
142 } else { | |
143 return new IntField(name,i,store); | |
144 } | |
145 } else if( value instanceof Long ) { | |
146 long i = (Long)value; | |
147 if( !isIndexed ) { | |
148 return new StoredField(name,i); | |
149 } else { | |
150 return new LongField(name,i,store); | |
151 } | |
152 } else if( value instanceof Double ) { | |
153 double i = (Double)value; | |
154 if( !isIndexed ) { | |
155 return new StoredField(name,i); | |
156 } else { | |
157 return new DoubleField(name,i,store); | |
158 } | |
159 } else if( value instanceof Float ) { | |
160 float i = (Float)value; | |
161 if( !isIndexed ) { | |
162 return new StoredField(name,i); | |
163 } else { | |
164 return new FloatField(name,i,store); | |
165 } | |
166 } else if( value instanceof byte[] ) { | |
167 if( isIndexed ) | |
168 throw new RuntimeException("can't index byte field "+name); | |
169 byte[] b = (byte[])value; | |
170 return new StoredField(name, b); | |
171 } else | |
172 throw new RuntimeException("invalid value type "+value.getClass()+"' for field '"+name+"'"); | |
173 } | |
174 | |
175 private synchronized boolean isIndexed(String fieldName) { | |
176 Boolean b = indexedMap.get(fieldName); | |
177 if( b==null ) { | |
178 b = goodConfig.isIndexed(fieldName); | |
179 indexedMap.put(fieldName,b); | |
180 Analyzer analyzer = goodConfig.getAnalyzer(fieldName); | |
181 if( analyzer!=null ) | |
182 fieldAnalyzer.add(fieldName,analyzer); | |
183 } | |
184 return b; | |
185 } | |
186 | |
187 | |
188 public void reindexDocuments(final String keyFieldName,Query query) throws IOException { | |
1465 | 189 IndexReader reader = openReader(); |
1460 | 190 final IndexSearcher searcher = new IndexSearcher(reader); |
191 searcher.search( query, new GoodCollector(){ | |
192 public void collectDoc(int iDoc) throws IOException { | |
193 Document doc = searcher.doc(iDoc); | |
194 Map<String,Object> storedFields = LuceneUtils.toMap(doc); | |
195 updateDocument(keyFieldName,storedFields); | |
196 } | |
197 }); | |
198 reader.close(); | |
199 } | |
1465 | 200 |
201 public IndexReader openReader() throws IOException { | |
202 return DirectoryReader.open(luceneWriter.getDirectory()); | |
203 } | |
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204 |
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205 public void check() throws IOException { |
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206 CheckIndex.Status status = new CheckIndex(luceneWriter.getDirectory()).checkIndex(); |
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207 if( !status.clean ) |
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208 logger.error("index not clean"); |
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209 } |
1460 | 210 } |