org.eaglei.lexical.lucene
Class AutoSuggestIndexAnalyzer

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      org.eaglei.lexical.lucene.AutoSuggestIndexAnalyzer

All Implemented Interfaces:

java.io.Closeable

public class AutoSuggestIndexAnalyzer
extends org.apache.lucene.analysis.Analyzer

Subclass of Lucene's Analyzer that supports the EdgeNGramTokenFilter for auto-suggest.

Author:

rfrost TODO If the StandardTokenizer is used, need to leverage the term vector position information to impact match score. It is unclear if this is possible without using SpanQueries or a CustomScoreQuery...

Field Summary

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

overridesTokenStreamMethod

Constructor Summary

AutoSuggestIndexAnalyzer()
Creates a new EdgeNGramAnalyzer.

Method Summary

org.apache.lucene.analysis.TokenStream

tokenStream(java.lang.String fieldName, java.io.Reader reader)

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

close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, reusableTokenStream, setOverridesTokenStreamMethod, setPreviousTokenStream

Methods inherited from class java.lang.Object

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

Constructor Detail

AutoSuggestIndexAnalyzer

public AutoSuggestIndexAnalyzer()

Creates a new EdgeNGramAnalyzer.

Method Detail

tokenStream

public final org.apache.lucene.analysis.TokenStream tokenStream(java.lang.String fieldName,
                                                                java.io.Reader reader)

Specified by:

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