PerFieldAnalyzerWrapper (Lucene 1.9.1 API)

Class PerFieldAnalyzerWrapper

public class PerFieldAnalyzerWrapper extends Analyzer

This analyzer is used to facilitate scenarios where different fields require different analysis techniques. Use PerFieldAnalyzerWrapper to add a non-default analyzer on a field name basis.

Example usage:

   PerFieldAnalyzerWrapper aWrapper =
      new PerFieldAnalyzerWrapper(new StandardAnalyzer());
   aWrapper.addAnalyzer("firstname", new KeywordAnalyzer());
   aWrapper.addAnalyzer("lastname", new KeywordAnalyzer());

In this example, StandardAnalyzer will be used for all fields except "firstname" and "lastname", for which KeywordAnalyzer will be used.

A PerFieldAnalyzerWrapper can be used like any other analyzer, for both indexing and query parsing.

Constructor Summary
	PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer) Constructs with default analyzer.

Constructor Summary

PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer)

Constructs with default analyzer.

Method Summary
void	addAnalyzer(String fieldName, Analyzer analyzer) Defines an analyzer to use for the specified field.
TokenStream	tokenStream(String fieldName, Reader reader)
String	toString()

Method Summary

void

addAnalyzer(String fieldName, Analyzer analyzer)

Defines an analyzer to use for the specified field.

TokenStream

tokenStream(String fieldName, Reader reader)

String

toString()

Constructor Detail

PerFieldAnalyzerWrapper

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

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