org.apache.lucene.analysis
Class PerFieldAnalyzerWrapper

java.lang.Object
  extended by org.apache.lucene.analysis.Analyzer
      extended by org.apache.lucene.analysis.PerFieldAnalyzerWrapper

public class PerFieldAnalyzerWrapper
extends Analyzer

This analyzer is used to facilitate scenarios where different fields require different analysis techniques. Use addAnalyzer(java.lang.String, org.apache.lucene.analysis.Analyzer) to add a non-default analyzer on a field name basis. See TestPerFieldAnalyzerWrapper.java for example usage.


Constructor Summary
PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer)
          Constructs with default analyzer.
 
Method Summary
 void addAnalyzer(java.lang.String fieldName, Analyzer analyzer)
          Defines an analyzer to use for the specified field.
 TokenStream tokenStream(java.lang.String fieldName, java.io.Reader reader)
          Creates a TokenStream which tokenizes all the text in the provided Reader.
 
Methods inherited from class org.apache.lucene.analysis.Analyzer
tokenStream
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PerFieldAnalyzerWrapper

public PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer)
Constructs with default analyzer.

Parameters:
defaultAnalyzer - Any fields not specifically defined to use a different analyzer will use the one provided here.
Method Detail

addAnalyzer

public void addAnalyzer(java.lang.String fieldName,
                        Analyzer analyzer)
Defines an analyzer to use for the specified field.

Parameters:
fieldName - field name requiring a non-default analyzer.
analyzer - non-default analyzer to use for field

tokenStream

public TokenStream tokenStream(java.lang.String fieldName,
                               java.io.Reader reader)
Description copied from class: Analyzer
Creates a TokenStream which tokenizes all the text in the provided Reader. Default implementation forwards to tokenStream(Reader) for compatibility with older version. Override to allow Analyzer to choose strategy based on document and/or field. Must be able to handle null field name for backward compatibility.

Overrides:
tokenStream in class Analyzer


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