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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.indices.analysis;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.ar.ArabicAnalyzer;
import org.apache.lucene.analysis.bg.BulgarianAnalyzer;
import org.apache.lucene.analysis.br.BrazilianAnalyzer;
import org.apache.lucene.analysis.ca.CatalanAnalyzer;
import org.apache.lucene.analysis.cjk.CJKAnalyzer;
import org.apache.lucene.analysis.ckb.SoraniAnalyzer;
import org.apache.lucene.analysis.cn.ChineseAnalyzer;
import org.apache.lucene.analysis.core.KeywordAnalyzer;
import org.apache.lucene.analysis.core.SimpleAnalyzer;
import org.apache.lucene.analysis.core.StopAnalyzer;
import org.apache.lucene.analysis.core.WhitespaceAnalyzer;
import org.apache.lucene.analysis.cz.CzechAnalyzer;
import org.apache.lucene.analysis.da.DanishAnalyzer;
import org.apache.lucene.analysis.de.GermanAnalyzer;
import org.apache.lucene.analysis.el.GreekAnalyzer;
import org.apache.lucene.analysis.en.EnglishAnalyzer;
import org.apache.lucene.analysis.es.SpanishAnalyzer;
import org.apache.lucene.analysis.eu.BasqueAnalyzer;
import org.apache.lucene.analysis.fa.PersianAnalyzer;
import org.apache.lucene.analysis.fi.FinnishAnalyzer;
import org.apache.lucene.analysis.fr.FrenchAnalyzer;
import org.apache.lucene.analysis.ga.IrishAnalyzer;
import org.apache.lucene.analysis.gl.GalicianAnalyzer;
import org.apache.lucene.analysis.hi.HindiAnalyzer;
import org.apache.lucene.analysis.hu.HungarianAnalyzer;
import org.apache.lucene.analysis.hy.ArmenianAnalyzer;
import org.apache.lucene.analysis.id.IndonesianAnalyzer;
import org.apache.lucene.analysis.it.ItalianAnalyzer;
import org.apache.lucene.analysis.lv.LatvianAnalyzer;
import org.apache.lucene.analysis.miscellaneous.PatternAnalyzer;
import org.apache.lucene.analysis.nl.DutchAnalyzer;
import org.apache.lucene.analysis.no.NorwegianAnalyzer;
import org.apache.lucene.analysis.pt.PortugueseAnalyzer;
import org.apache.lucene.analysis.ro.RomanianAnalyzer;
import org.apache.lucene.analysis.ru.RussianAnalyzer;
import org.apache.lucene.analysis.snowball.SnowballAnalyzer;
import org.apache.lucene.analysis.standard.ClassicAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.sv.SwedishAnalyzer;
import org.apache.lucene.analysis.th.ThaiAnalyzer;
import org.apache.lucene.analysis.tr.TurkishAnalyzer;
import org.apache.lucene.analysis.util.CharArraySet;
import org.elasticsearch.Version;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.index.analysis.StandardHtmlStripAnalyzer;
import org.elasticsearch.indices.analysis.PreBuiltCacheFactory.CachingStrategy;
import java.util.Locale;
/**
*
*/
public enum PreBuiltAnalyzers {
STANDARD(CachingStrategy.ELASTICSEARCH) { // we don't do stopwords anymore from 1.0Beta on
@Override
protected Analyzer create(Version version) {
if (version.onOrAfter(Version.V_1_0_0_Beta1)) {
return new StandardAnalyzer(version.luceneVersion, CharArraySet.EMPTY_SET);
}
return new StandardAnalyzer(version.luceneVersion);
}
},
DEFAULT(CachingStrategy.ELASTICSEARCH){
@Override
protected Analyzer create(Version version) {
// by calling get analyzer we are ensuring reuse of the same STANDARD analyzer for DEFAULT!
// this call does not create a new instance
return STANDARD.getAnalyzer(version);
}
},
KEYWORD(CachingStrategy.ONE) {
@Override
protected Analyzer create(Version version) {
return new KeywordAnalyzer();
}
},
STOP {
@Override
protected Analyzer create(Version version) {
return new StopAnalyzer(version.luceneVersion);
}
},
WHITESPACE {
@Override
protected Analyzer create(Version version) {
return new WhitespaceAnalyzer(version.luceneVersion);
}
},
SIMPLE {
@Override
protected Analyzer create(Version version) {
return new SimpleAnalyzer(version.luceneVersion);
}
},
CLASSIC {
@Override
protected Analyzer create(Version version) {
return new ClassicAnalyzer(version.luceneVersion);
}
},
SNOWBALL {
@Override
protected Analyzer create(Version version) {
return new SnowballAnalyzer(version.luceneVersion, "English", StopAnalyzer.ENGLISH_STOP_WORDS_SET);
}
},
PATTERN(CachingStrategy.ELASTICSEARCH) {
@Override
protected Analyzer create(Version version) {
if (version.onOrAfter(Version.V_1_0_0_RC1)) {
return new PatternAnalyzer(version.luceneVersion, Regex.compile("\\W+" /*PatternAnalyzer.NON_WORD_PATTERN*/, null), true, CharArraySet.EMPTY_SET);
}
return new PatternAnalyzer(version.luceneVersion, Regex.compile("\\W+" /*PatternAnalyzer.NON_WORD_PATTERN*/, null), true, StopAnalyzer.ENGLISH_STOP_WORDS_SET);
}
},
STANDARD_HTML_STRIP(CachingStrategy.ELASTICSEARCH) {
@Override
protected Analyzer create(Version version) {
if (version.onOrAfter(Version.V_1_0_0_RC1)) {
return new StandardHtmlStripAnalyzer(version.luceneVersion, CharArraySet.EMPTY_SET);
}
return new StandardHtmlStripAnalyzer(version.luceneVersion);
}
},
ARABIC {
@Override
protected Analyzer create(Version version) {
return new ArabicAnalyzer(version.luceneVersion);
}
},
ARMENIAN {
@Override
protected Analyzer create(Version version) {
return new ArmenianAnalyzer(version.luceneVersion);
}
},
BASQUE {
@Override
protected Analyzer create(Version version) {
return new BasqueAnalyzer(version.luceneVersion);
}
},
BRAZILIAN {
@Override
protected Analyzer create(Version version) {
return new BrazilianAnalyzer(version.luceneVersion);
}
},
BULGARIAN {
@Override
protected Analyzer create(Version version) {
return new BulgarianAnalyzer(version.luceneVersion);
}
},
CATALAN {
@Override
protected Analyzer create(Version version) {
return new CatalanAnalyzer(version.luceneVersion);
}
},
CHINESE(CachingStrategy.ONE) {
@Override
protected Analyzer create(Version version) {
return new ChineseAnalyzer();
}
},
CJK {
@Override
protected Analyzer create(Version version) {
return new CJKAnalyzer(version.luceneVersion);
}
},
CZECH {
@Override
protected Analyzer create(Version version) {
return new CzechAnalyzer(version.luceneVersion);
}
},
DUTCH {
@Override
protected Analyzer create(Version version) {
return new DutchAnalyzer(version.luceneVersion);
}
},
DANISH {
@Override
protected Analyzer create(Version version) {
return new DanishAnalyzer(version.luceneVersion);
}
},
ENGLISH {
@Override
protected Analyzer create(Version version) {
return new EnglishAnalyzer(version.luceneVersion);
}
},
FINNISH {
@Override
protected Analyzer create(Version version) {
return new FinnishAnalyzer(version.luceneVersion);
}
},
FRENCH {
@Override
protected Analyzer create(Version version) {
return new FrenchAnalyzer(version.luceneVersion);
}
},
GALICIAN {
@Override
protected Analyzer create(Version version) {
return new GalicianAnalyzer(version.luceneVersion);
}
},
GERMAN {
@Override
protected Analyzer create(Version version) {
return new GermanAnalyzer(version.luceneVersion);
}
},
GREEK {
@Override
protected Analyzer create(Version version) {
return new GreekAnalyzer(version.luceneVersion);
}
},
HINDI {
@Override
protected Analyzer create(Version version) {
return new HindiAnalyzer(version.luceneVersion);
}
},
HUNGARIAN {
@Override
protected Analyzer create(Version version) {
return new HungarianAnalyzer(version.luceneVersion);
}
},
INDONESIAN {
@Override
protected Analyzer create(Version version) {
return new IndonesianAnalyzer(version.luceneVersion);
}
},
IRISH {
@Override
protected Analyzer create(Version version) {
return new IrishAnalyzer(version.luceneVersion);
}
},
ITALIAN {
@Override
protected Analyzer create(Version version) {
return new ItalianAnalyzer(version.luceneVersion);
}
},
LATVIAN {
@Override
protected Analyzer create(Version version) {
return new LatvianAnalyzer(version.luceneVersion);
}
},
NORWEGIAN {
@Override
protected Analyzer create(Version version) {
return new NorwegianAnalyzer(version.luceneVersion);
}
},
PERSIAN {
@Override
protected Analyzer create(Version version) {
return new PersianAnalyzer(version.luceneVersion);
}
},
PORTUGUESE {
@Override
protected Analyzer create(Version version) {
return new PortugueseAnalyzer(version.luceneVersion);
}
},
ROMANIAN {
@Override
protected Analyzer create(Version version) {
return new RomanianAnalyzer(version.luceneVersion);
}
},
RUSSIAN {
@Override
protected Analyzer create(Version version) {
return new RussianAnalyzer(version.luceneVersion);
}
},
SORANI {
@Override
protected Analyzer create(Version version) {
return new SoraniAnalyzer(version.luceneVersion);
}
},
SPANISH {
@Override
protected Analyzer create(Version version) {
return new SpanishAnalyzer(version.luceneVersion);
}
},
SWEDISH {
@Override
protected Analyzer create(Version version) {
return new SwedishAnalyzer(version.luceneVersion);
}
},
TURKISH {
@Override
protected Analyzer create(Version version) {
return new TurkishAnalyzer(version.luceneVersion);
}
},
THAI {
@Override
protected Analyzer create(Version version) {
return new ThaiAnalyzer(version.luceneVersion);
}
};
abstract protected Analyzer create(Version version);
protected final PreBuiltCacheFactory.PreBuiltCache cache;
PreBuiltAnalyzers() {
this(PreBuiltCacheFactory.CachingStrategy.LUCENE);
}
PreBuiltAnalyzers(PreBuiltCacheFactory.CachingStrategy cachingStrategy) {
cache = PreBuiltCacheFactory.getCache(cachingStrategy);
}
PreBuiltCacheFactory.PreBuiltCache getCache() {
return cache;
}
public synchronized Analyzer getAnalyzer(Version version) {
Analyzer analyzer = cache.get(version);
if (analyzer == null) {
analyzer = this.create(version);
cache.put(version, analyzer);
}
return analyzer;
}
/**
* Get a pre built Analyzer by its name or fallback to the default one
* @param name Analyzer name
* @param defaultAnalyzer default Analyzer if name not found
*/
public static PreBuiltAnalyzers getOrDefault(String name, PreBuiltAnalyzers defaultAnalyzer) {
try {
return valueOf(name.toUpperCase(Locale.ROOT));
} catch (IllegalArgumentException e) {
return defaultAnalyzer;
}
}
}