如何为我正在使用Lucene编制索引的文档中的每个字段启用不同的分析器?例如:
RAMDirectory dir = new RAMDirectory();
IndexWriter iw = new IndexWriter(dir, new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_CURRENT), true, IndexWriter.MaxFieldLength.UNLIMITED);
Document doc = new Document();
Field field1 = new Field("field1", someText1, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS);
Field field2 = new Field("field2", someText2, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS);
doc.Add(field1);
doc.Add(field2);
iw.AddDocument(doc);
iw.Commit();
分析器是IndexWriter的参数,但是我想对field1使用StandardAnalyzer而对field2使用SimpleAnalyzer,我该怎么做?当然,搜索时同样适用。必须为每个字段应用正确的分析仪。
答案 0 :(得分:26)
PerFieldAnalyzerWrapper正是您要找的。在Lucene.net中相当于here。
答案 1 :(得分:8)
Map<String, Analyzer> analyzerMap = new HashMap<String, Analyzer>();
analyzerMap.put(fieldone, new IKAnalyzer4PinYin(false, IKAnalyzer4PinYin.PINYIN));
analyzerMap.put(fieldtwo, new IKAnalyzer4PinYin(false, KAnalyzer4PinYin.PINYIN_SHOUZIMU));
PerFieldAnalyzerWrapper wrapper = new PerFieldAnalyzerWrapper(new IKAnalyzer4PinYin(false), analyzerMap);
IndexWriterConfig iwConfig = new IndexWriterConfig(Version.LUCENE_40 , wrapper);