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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
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package org.elasticsearch.index.analysis;
import org.apache.lucene.analysis.CharArraySet;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.miscellaneous.SetKeywordMarkerFilter;
import org.apache.lucene.analysis.snowball.SnowballFilter;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.IndexSettings;
import org.tartarus.snowball.ext.FrenchStemmer;
public class FrenchStemTokenFilterFactory extends AbstractTokenFilterFactory {
private final CharArraySet exclusions;
public FrenchStemTokenFilterFactory(IndexSettings indexSettings, Environment environment, String name, Settings settings) {
super(indexSettings, name, settings);
this.exclusions = Analysis.parseStemExclusion(settings, CharArraySet.EMPTY_SET);
}
@Override
public TokenStream create(TokenStream tokenStream) {
tokenStream = new SetKeywordMarkerFilter(tokenStream, exclusions);
return new SnowballFilter(tokenStream, new FrenchStemmer());
}
}