lux.index.analysis
Class WhitespaceGapAnalyzer

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      lux.index.analysis.WhitespaceGapAnalyzer

All Implemented Interfaces:

Closeable

public final class WhitespaceGapAnalyzer
extends org.apache.lucene.analysis.Analyzer

An Analyzer that uses WhitespaceTokenizer, and inserts position gaps of 100 between multiple values to inhibit phrase and span matches across values.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.analysis.Analyzer

org.apache.lucene.analysis.Analyzer.GlobalReuseStrategy, org.apache.lucene.analysis.Analyzer.PerFieldReuseStrategy, org.apache.lucene.analysis.Analyzer.ReuseStrategy, org.apache.lucene.analysis.Analyzer.TokenStreamComponents

Constructor Summary

WhitespaceGapAnalyzer()

Method Summary

protected org.apache.lucene.analysis.Analyzer.TokenStreamComponents	createComponents(String fieldName, Reader reader)
int	getPositionIncrementGap(String field)

Methods inherited from class org.apache.lucene.analysis.Analyzer

close, getOffsetGap, initReader, tokenStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WhitespaceGapAnalyzer

public WhitespaceGapAnalyzer()

Method Detail

createComponents

protected org.apache.lucene.analysis.Analyzer.TokenStreamComponents createComponents(String fieldName,
                                                                                     Reader reader)

Specified by:

createComponents in class org.apache.lucene.analysis.Analyzer

getPositionIncrementGap

public int getPositionIncrementGap(String field)

Overrides:

getPositionIncrementGap in class org.apache.lucene.analysis.Analyzer

Returns:

100 - note this is tied to Surround QueryParser's maximum distance of 99.