org.hibernate.search.backend.impl.lucene.analysis

Class ConcurrentlyMutableAnalyzer

java.lang.Object

org.apache.lucene.analysis.Analyzer

org.apache.lucene.analysis.AnalyzerWrapper

org.apache.lucene.analysis.DelegatingAnalyzerWrapper

org.hibernate.search.backend.impl.lucene.analysis.ConcurrentlyMutableAnalyzer

All Implemented Interfaces:

Closeable, AutoCloseable

public final class ConcurrentlyMutableAnalyzer
extends DelegatingAnalyzerWrapper

An Analyzer implementation which can dynamically be reconfigured. We use this as temporary solution to workaround LUCENE-6212, until a better solution is found.

Author:

Sanne Grinovero (C) 2015 Red Hat Inc.

Nested Class Summary

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

Analyzer.ReuseStrategy, 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
ConcurrentlyMutableAnalyzer(Analyzer initialAnalyzer)

Method Summary

Modifier and Type	Method and Description
protected Analyzer	getWrappedAnalyzer(String fieldName)
boolean	isCompatibleWith(ScopedAnalyzer analyzer) Checks if the currently set Analyzer is the same as the proposed one, in which case there is no need for replacements or locking.
void	updateAnalyzer(ScopedAnalyzer analyzer) Correct concurrency control requires external locking!

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

wrapComponents, wrapReader

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

createComponents, getOffsetGap, getPositionIncrementGap, initReader

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

close, getReuseStrategy, getVersion, setVersion, tokenStream, tokenStream

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcurrentlyMutableAnalyzer

public ConcurrentlyMutableAnalyzer(Analyzer initialAnalyzer)

Method Detail

getWrappedAnalyzer

protected Analyzer getWrappedAnalyzer(String fieldName)

Specified by:

getWrappedAnalyzer in class AnalyzerWrapper

isCompatibleWith

public boolean isCompatibleWith(ScopedAnalyzer analyzer)

Checks if the currently set Analyzer is the same as the proposed one, in which case there is no need for replacements or locking. Correct concurrency control requires external locking!

Parameters:

analyzer - the ScopedAnalyzer to use for comparison

Returns:

true if there is no need to replace the current Analyzer

updateAnalyzer

public void updateAnalyzer(ScopedAnalyzer analyzer)

Correct concurrency control requires external locking!

Parameters:

analyzer - the ScopedAnalyzer to use for locking