org.elasticsearch.index.analysis.HunspellTokenFilterFactory Maven / Gradle / Ivy
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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.index.analysis;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.hunspell.Dictionary;
import org.apache.lucene.analysis.hunspell.HunspellStemFilter;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.indices.analysis.HunspellService;
import java.util.Locale;
public class HunspellTokenFilterFactory extends AbstractTokenFilterFactory {
private final Dictionary dictionary;
private final boolean dedup;
private final boolean longestOnly;
public HunspellTokenFilterFactory(IndexSettings indexSettings, String name, Settings settings, HunspellService hunspellService) {
super(indexSettings, name, settings);
String locale = settings.get("locale", settings.get("language", settings.get("lang", null)));
if (locale == null) {
throw new IllegalArgumentException("missing [locale | language | lang] configuration for hunspell token filter");
}
dictionary = hunspellService.getDictionary(locale);
if (dictionary == null) {
throw new IllegalArgumentException(String.format(Locale.ROOT, "Unknown hunspell dictionary for locale [%s]", locale));
}
dedup = settings.getAsBoolean("dedup", true);
longestOnly = settings.getAsBoolean("longest_only", false);
}
@Override
public TokenStream create(TokenStream tokenStream) {
return new HunspellStemFilter(tokenStream, dictionary, dedup, longestOnly);
}
public boolean dedup() {
return dedup;
}
public boolean longestOnly() {
return longestOnly;
}
}