com.atlassian.jira.issue.index.analyzer

Class TextAnalyzer

java.lang.Object

org.apache.lucene.analysis.Analyzer

com.atlassian.jira.issue.index.analyzer.TextAnalyzer

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

BrazilianAnalyzer, BulgarianAnalyzer, CJKAnalyzer, CzechAnalyzer, EnglishAnalyzer, FrenchAnalyzer, GermanAnalyzer, GreekAnalyzer, ItalianAnalyzer, SimpleAnalyzer, StemmingAnalyzer, ThaiAnalyzer

public abstract class TextAnalyzer
extends org.apache.lucene.analysis.Analyzer

An Analyzer base class that provides the facility to apply the SubtokenFilter during indexing and duplicating the original tokens before any stemming filter is applied to support wildcard queries and exact phrase queries on document fields.

Nested Class Summary

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

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

Field Summary

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

GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY

Constructor Summary

Constructors

Constructor and Description
TextAnalyzer(boolean indexing)

Method Summary

Modifier and Type	Method and Description
abstract org.apache.lucene.analysis.Analyzer.TokenStreamComponents	createComponents(String fieldName)
boolean	isIndexing()
protected org.apache.lucene.analysis.TokenStream	wrapStreamForIndexing(org.apache.lucene.analysis.TokenStream input) Applies a SubtokenFilter to the input token stream at document indexing time.
protected org.apache.lucene.analysis.TokenStream	wrapStreamForWilcardSearchSupport(org.apache.lucene.analysis.TokenStream input) Applies a KeywordRepeatFilter to the input token stream at document indexing time to store the original tokens as keywords before any stemming filter is applied and therefore support wildcard searches and exact phrase queries on document fields.

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

attributeFactory, close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, getVersion, initReader, initReaderForNormalization, normalize, normalize, setVersion, tokenStream, tokenStream

Methods inherited from class java.lang.Object

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

Constructor Detail

TextAnalyzer

public TextAnalyzer(boolean indexing)

Method Detail

isIndexing

public boolean isIndexing()

wrapStreamForIndexing

protected org.apache.lucene.analysis.TokenStream wrapStreamForIndexing(org.apache.lucene.analysis.TokenStream input)

Applies a SubtokenFilter to the input token stream at document indexing time.

Parameters:

input - token stream

Returns:

A TokenStream filtered by the sub-token filter during indexing, otherwise the input token stream is returned.

wrapStreamForWilcardSearchSupport

protected org.apache.lucene.analysis.TokenStream wrapStreamForWilcardSearchSupport(org.apache.lucene.analysis.TokenStream input)

Applies a KeywordRepeatFilter to the input token stream at document indexing time to store the original tokens as keywords before any stemming filter is applied and therefore support wildcard searches and exact phrase queries on document fields.

Parameters:

input - token stream

Returns:

A TokenStream filtered by the sub-token filter during indexing, otherwise the input token stream is returned.

createComponents

public abstract org.apache.lucene.analysis.Analyzer.TokenStreamComponents createComponents(String fieldName)

Specified by:

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