Different analyzers for each field

Question

How can I enable different analyzers for each field in a document I\'m indexing with Lucene? Example:

        RAMDirectory dir = new RAMDirectory();
        Ind         


        

Answer 1

PerFieldAnalyzerWrapper is what you are looking for. The equivalent of this in Lucene.net is here.

Answer 2

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);

Answer 3

Necromancing.
For C#:

Lucene.Net.Util.LuceneVersion version = Lucene.Net.Util.LuceneVersion.LUCENE_48;

Dictionary<string, Lucene.Net.Analysis.Analyzer> fieldAnalyzers = 
    new Dictionary<string, Lucene.Net.Analysis.Analyzer>(System.StringComparer.OrdinalIgnoreCase);

fieldAnalyzers["YourFieldName"] = new Lucene.Net.Analysis.Core.KeywordAnalyzer();

Lucene.Net.Analysis.Miscellaneous.PerFieldAnalyzerWrapper wrapper = 
    new Lucene.Net.Analysis.Miscellaneous.PerFieldAnalyzerWrapper(
        new Lucene.Net.Analysis.Core.KeywordAnalyzer(), fieldAnalyzers);

Lucene.Net.Index.IndexWriterConfig writerConfig = new Lucene.Net.Index.IndexWriterConfig(version, wrapper);