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java.lang.Objectorg.apache.lucene.analysis.Analyzer
org.apache.lucene.analysis.PerFieldAnalyzerWrapper
public class PerFieldAnalyzerWrapper
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.
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 | |
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PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer)
Constructs with default analyzer. |
Method Summary | |
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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. |
java.lang.String |
toString()
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Methods inherited from class org.apache.lucene.analysis.Analyzer |
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getPositionIncrementGap, tokenStream |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer)
defaultAnalyzer
- Any fields not specifically
defined to use a different analyzer will use the one provided here.Method Detail |
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public void addAnalyzer(java.lang.String fieldName, Analyzer analyzer)
fieldName
- field name requiring a non-default analyzeranalyzer
- non-default analyzer to use for fieldpublic TokenStream tokenStream(java.lang.String fieldName, java.io.Reader reader)
Analyzer
tokenStream
in class Analyzer
public java.lang.String toString()
toString
in class java.lang.Object
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